Divija Murkoth, MSc Ecology and Environmental Science, Pondicherry University, Pondicherry, 2024
Dissertation title: Mixed species groups in waterbird communities in coastal Tamil Nadu, India.
Mixed species groups (MSGs) in forest birds have been extensively studied and fewer studies have looked into MSG dynamics in waterbird communities. My aim, therefore, was to define distinct groups amidst large aggregations and to find patterns of clusters within them. My study indicates that the seemingly random aggregations do form clusters, providing a framework for further studies on waterbird MSGs.
Dissertation title: Mixed species groups in waterbird communities in coastal Tamil Nadu, India.
Mixed species groups (MSGs) in forest birds have been extensively studied and fewer studies have looked into MSG dynamics in waterbird communities. My aim, therefore, was to define distinct groups amidst large aggregations and to find patterns of clusters within them. My study indicates that the seemingly random aggregations do form clusters, providing a framework for further studies on waterbird MSGs.
Abhishek Thawait, BS-MS, Indian Institute of Science Education and Research Kolkata, 2024
Dissertation title: Assessing Plastic Ingestion and Accumulation in Olive Ridley Turtles: A Comparative Study of Rushikulya and Devi Beaches, Odisha, India
My dissertation aimed to assess the extent of marine plastic pollution affecting Olive Ridleys at two nesting sites in Odisha. The study focused on plastic debris ingestion and microplastic accumulation in different tissues. Necropsies were conducted on stranded dead turtles at the beaches to collect muscle, liver, and gut samples. The results revealed that turtles in both regions are exposed to plastic pollution, with a possible indication that ocean currents play a role in microplastic aggregation around the nesting sites.
Dissertation title: Assessing Plastic Ingestion and Accumulation in Olive Ridley Turtles: A Comparative Study of Rushikulya and Devi Beaches, Odisha, India
My dissertation aimed to assess the extent of marine plastic pollution affecting Olive Ridleys at two nesting sites in Odisha. The study focused on plastic debris ingestion and microplastic accumulation in different tissues. Necropsies were conducted on stranded dead turtles at the beaches to collect muscle, liver, and gut samples. The results revealed that turtles in both regions are exposed to plastic pollution, with a possible indication that ocean currents play a role in microplastic aggregation around the nesting sites.
Sharon Pradhan, MSc Zoology, CHRIST (Deemed to be University), Bangalore, 2024
Dissertation title: Presence of microplastics and heavy metals contaminants and their routes of entry into eggs and hatchlings of olive ridley turtles.
My thesis focused on the presence and bioaccumulation of microplastics in sea turtles and their potential route of entry into eggs and hatchlings. Examining samples from Rushikulya and Devi rookeries in Odisha, the study found microplastic pollution in the eggs of the dead stranded turtles, suggesting a potential maternal transfer. The different types of microplastics found were fibres, fragments and sheets, with transparent fibres being the highest.
Dissertation title: Presence of microplastics and heavy metals contaminants and their routes of entry into eggs and hatchlings of olive ridley turtles.
My thesis focused on the presence and bioaccumulation of microplastics in sea turtles and their potential route of entry into eggs and hatchlings. Examining samples from Rushikulya and Devi rookeries in Odisha, the study found microplastic pollution in the eggs of the dead stranded turtles, suggesting a potential maternal transfer. The different types of microplastics found were fibres, fragments and sheets, with transparent fibres being the highest.
Sumit Yadav, BS-MS, Indian Institute of Science Education and Research, Pune, 2024
Dissertation title: In the jaws of pollution: quantifying microplastic and heavy metal burden in the commercial shark species of the Andaman Islands
My dissertation sought to investigate the extent of microplastic and heavy metal contamination in the sharks of the Andaman Islands. Tissue samples were collected to draw comparisons between demographics such as age & sex as well as habitat dependencies in the contamination extent. The findings reveal that certain habitats are more vulnerable to contaminant exposure. Factors such as the life history traits of resident species and the topography of both the contaminants and the habitat contribute to this accumulation.
Dissertation title: In the jaws of pollution: quantifying microplastic and heavy metal burden in the commercial shark species of the Andaman Islands
My dissertation sought to investigate the extent of microplastic and heavy metal contamination in the sharks of the Andaman Islands. Tissue samples were collected to draw comparisons between demographics such as age & sex as well as habitat dependencies in the contamination extent. The findings reveal that certain habitats are more vulnerable to contaminant exposure. Factors such as the life history traits of resident species and the topography of both the contaminants and the habitat contribute to this accumulation.
Aaheli Bera, MSc Biotechnology, St Xavier’s College (Autonomous), Kolkata, 2024.
Dissertation title: Small Rays, Big Threats: A Quantitative Analysis of Microplastics from Brevitrygon walga.
My thesis aimed to classify and characterize microplastics in the scaly whip ray Brevitrygon walga, a common food fish in coastal regions. The sampling was conducted at a landing site in Malvan, Maharashtra where rays are caught as bycatch. Furthermore, the study aimed to compare the abundance of microplastics in different tissues. This study provides insight into the status of microplastic pollution and accumulation in scaly whiprays from the coast of Malvan, highlighting concerns about human ingestion and calls for measures to reduce marine animal microplastic ingestion.
Dissertation title: Small Rays, Big Threats: A Quantitative Analysis of Microplastics from Brevitrygon walga.
My thesis aimed to classify and characterize microplastics in the scaly whip ray Brevitrygon walga, a common food fish in coastal regions. The sampling was conducted at a landing site in Malvan, Maharashtra where rays are caught as bycatch. Furthermore, the study aimed to compare the abundance of microplastics in different tissues. This study provides insight into the status of microplastic pollution and accumulation in scaly whiprays from the coast of Malvan, highlighting concerns about human ingestion and calls for measures to reduce marine animal microplastic ingestion.
Meenakshi AK, MSc, Kerala University of Digital Sciences, Innovation and Technology, 2024
Dissertation title: Exploring the efficacy of sponges as a bio-indicator of Microplastic pollution
The objective of my dissertation work was to explore the efficacy of sponges as bio-indicators of microplastic pollution. My study examined the differences in pollution across selected locations in South Andaman and the accumulation between different sponge species. The findings from my research highlight the potential of sponges as reliable indicators for monitoring microplastic pollution, providing crucial insights into the distribution and impact of microplastics in marine ecosystems. This work contributes to the broader understanding of how microplastics infiltrate marine life and disrupt ecological balance, which is an area of significant interest to me.
Dissertation title: Exploring the efficacy of sponges as a bio-indicator of Microplastic pollution
The objective of my dissertation work was to explore the efficacy of sponges as bio-indicators of microplastic pollution. My study examined the differences in pollution across selected locations in South Andaman and the accumulation between different sponge species. The findings from my research highlight the potential of sponges as reliable indicators for monitoring microplastic pollution, providing crucial insights into the distribution and impact of microplastics in marine ecosystems. This work contributes to the broader understanding of how microplastics infiltrate marine life and disrupt ecological balance, which is an area of significant interest to me.
Neha Verma, MSc, University of Kota, Rajasthan, 2024
Dissertation title: Investigating the phylogeography of Leatherback Sea Turtles to construct a haplotype network across different locations in the Andaman and Nicobar Islands.
This dissertation focused on understanding the genetic diversity and population structure of leatherback turtles in the Andaman and Nicobar Islands. Using mitochondrial DNA from tissue samples collected in the region, a haplotype network was constructed to explore genetic connections. Local samples were compared with global haplotypes, uncovering unique patterns of genetic differentiation. The study revealed multiple polymorphic sites and haplotypes, providing valuable insights into the population genetics of these turtles.
Dissertation title: Investigating the phylogeography of Leatherback Sea Turtles to construct a haplotype network across different locations in the Andaman and Nicobar Islands.
This dissertation focused on understanding the genetic diversity and population structure of leatherback turtles in the Andaman and Nicobar Islands. Using mitochondrial DNA from tissue samples collected in the region, a haplotype network was constructed to explore genetic connections. Local samples were compared with global haplotypes, uncovering unique patterns of genetic differentiation. The study revealed multiple polymorphic sites and haplotypes, providing valuable insights into the population genetics of these turtles.
Zeba Madani, MS, Bhavan’s College, Mumbai, 2023.
Dissertation title: Range-restricted or widely distributed? Uncovering the distributional range and phylogeographic patterns of a fossorial uropeltid snake through genetics and species distribution models
The dissertation sought to understand the distribution range of Uropeltis jerdoni, discovered in 2021, through phylogenetic analysis, species distribution modelling, and morphometric analysis. U. jerdoni samples from the Western Ghats and the Deccan Plateau were analyzed alongside other Uropeltis species to understand the genetic relationship within the target samples and to delimit species boundaries using three mitochondrial genes (12s, ND4 and 16s). The study further requires more sampling and genetic data for nuclear genes.
Dissertation title: Range-restricted or widely distributed? Uncovering the distributional range and phylogeographic patterns of a fossorial uropeltid snake through genetics and species distribution models
The dissertation sought to understand the distribution range of Uropeltis jerdoni, discovered in 2021, through phylogenetic analysis, species distribution modelling, and morphometric analysis. U. jerdoni samples from the Western Ghats and the Deccan Plateau were analyzed alongside other Uropeltis species to understand the genetic relationship within the target samples and to delimit species boundaries using three mitochondrial genes (12s, ND4 and 16s). The study further requires more sampling and genetic data for nuclear genes.
Monali Patre, BS-MS, Indian Institute of Science Education and Research, Pune, 2023.
Dissertation title: A study of microplastics in marine organisms across trophic levels on the west coast of India
The objective of my dissertation was to compare the abundance and diversity of microplastics in fish across trophic levels. This comparison was conducted between two locations with varying degrees of anthropogenic pressure, namely Kochi in Kerala and Malvan in Maharashtra. Additionally, the study aimed to examine the presence of microplastics in different tissues. The findings of this study yielded valuable insights into the occurrence and distribution of microplastics in marine ecosystems.
Dissertation title: A study of microplastics in marine organisms across trophic levels on the west coast of India
The objective of my dissertation was to compare the abundance and diversity of microplastics in fish across trophic levels. This comparison was conducted between two locations with varying degrees of anthropogenic pressure, namely Kochi in Kerala and Malvan in Maharashtra. Additionally, the study aimed to examine the presence of microplastics in different tissues. The findings of this study yielded valuable insights into the occurrence and distribution of microplastics in marine ecosystems.
Prahalad Srikanthan, BS-MS, Indian Institute of Technology Madras, 2023.
Dissertation title: May the arribada be with you: Identifying the environmental cues for olive ridley mass nesting events in Orissa
My dissertation aimed to identify the environmental triggers for mass nesting events of olive ridley turtles at two sites, Gahirmatha and Rushikulya. This was accomplished by analysing a multi-decadal dataset containing over ten environmental variables. I conducted a statistical analysis and implemented a machine-learning model to identify the arribada triggers. The results showed that the lunar phase was an important parameter in both sites, with other triggers varying across sites. This indicates that mass nesting triggers are highly site-specific.
Dissertation title: May the arribada be with you: Identifying the environmental cues for olive ridley mass nesting events in Orissa
My dissertation aimed to identify the environmental triggers for mass nesting events of olive ridley turtles at two sites, Gahirmatha and Rushikulya. This was accomplished by analysing a multi-decadal dataset containing over ten environmental variables. I conducted a statistical analysis and implemented a machine-learning model to identify the arribada triggers. The results showed that the lunar phase was an important parameter in both sites, with other triggers varying across sites. This indicates that mass nesting triggers are highly site-specific.
Nivedita Naveen, BS, Krea University, 2023
Dissertation title: Nest site selection and segregation among sea turtles in the Andaman and Nicobar Islands.
The overall goal of this study was to understand and compare nest site selection by the four different species of turtles known to nest in the Andaman and Nicobar Islands. Species distribution models were used to predict population distributions for each species, following which comparisons were made between the models. Similarities were observed between green turtle and hawksbill distributions, as well as between leatherback and olive ridley distributions. Such models could help us understand sea turtle distributions, as well as provide a baseline upon which future changes could be compared.
Dissertation title: Nest site selection and segregation among sea turtles in the Andaman and Nicobar Islands.
The overall goal of this study was to understand and compare nest site selection by the four different species of turtles known to nest in the Andaman and Nicobar Islands. Species distribution models were used to predict population distributions for each species, following which comparisons were made between the models. Similarities were observed between green turtle and hawksbill distributions, as well as between leatherback and olive ridley distributions. Such models could help us understand sea turtle distributions, as well as provide a baseline upon which future changes could be compared.
Haradhan Ruidas, BS-MS, Indian Institute of Science Education and Research, Berhampur, 2023.
Dissertation title: Microplastic pollution and its effects on the reproductive organs of Scoliodon laticaudus
The objective of my MS thesis was to examine the extent of MP accumulation in the tissues of the spadenose shark and to understand the potential effects of MPs concentration on reproductive organs. The samples for the project were collected in Malvan, Maharashtra and Kochi, Kerala. Further research must be done to better understand the possible consequences and implement practical solutions to address these issues.
Dissertation title: Microplastic pollution and its effects on the reproductive organs of Scoliodon laticaudus
The objective of my MS thesis was to examine the extent of MP accumulation in the tissues of the spadenose shark and to understand the potential effects of MPs concentration on reproductive organs. The samples for the project were collected in Malvan, Maharashtra and Kochi, Kerala. Further research must be done to better understand the possible consequences and implement practical solutions to address these issues.
Amrutha KV, BS-MS, Indian Institute of Science Education and Research, Mohali, 2023
Dissertation title: Study of heavy metal contamination in shark muscle tissue on the west coast of India
The objective of my dissertation was to quantify heavy metals present in shark muscle tissue, and to analyse contamination on the west coast of India. Sharks were sampled from Malvan, Maharashtra, and Kochi, Kerala. The results provide an overview of the heavy metals present in shark muscle tissue and. Certain heavy metals were above the WHO recommended permissible limits, which can be harmful for frequent shark meat consumers.
Dissertation title: Study of heavy metal contamination in shark muscle tissue on the west coast of India
The objective of my dissertation was to quantify heavy metals present in shark muscle tissue, and to analyse contamination on the west coast of India. Sharks were sampled from Malvan, Maharashtra, and Kochi, Kerala. The results provide an overview of the heavy metals present in shark muscle tissue and. Certain heavy metals were above the WHO recommended permissible limits, which can be harmful for frequent shark meat consumers.
Garima Bora, M.Sc. Biodiversity and Conservation, GGSIP University, New Delhi, 2022.
Dissertation title: Feeding ecology of elasmobranch species along the Malvan coast during the pre-monsoon season
The objective of the project was to explore the variation in resource use within and between elasmobranch species found along the coast of Malvan, Maharashtra. This was done by quantifying the breadth and specificity of diet of the five selected shark species. Individuals were sampled from Malvan, which is a landing centre where elasmobranchs are often caught as by-catch. The result gave an overview of their diet composition and how it varies based on the depth, distribution, and sexual maturity.
Dissertation title: Feeding ecology of elasmobranch species along the Malvan coast during the pre-monsoon season
The objective of the project was to explore the variation in resource use within and between elasmobranch species found along the coast of Malvan, Maharashtra. This was done by quantifying the breadth and specificity of diet of the five selected shark species. Individuals were sampled from Malvan, which is a landing centre where elasmobranchs are often caught as by-catch. The result gave an overview of their diet composition and how it varies based on the depth, distribution, and sexual maturity.
Sharayu Jakhete, B.tech Biotechnology, Dr. D Y Patil college of Biotechnology and Bioinformatics, Pune, 2022.
Dissertation title: A comparative study of microplastics in benthic vs pelagic sharks of Malvan, Sindhudurg, Maharashtra
The objective of my dissertation study is to quantify and categorize the microplastics found in the gastro-intestinal tracts of four species of sharks, belonging to benthic and pelagic habitats and thus compare whether habitat influences the ingestion of microplastic particles. I sampled sharks for my study from the coast and harbours of Malvan, Maharashtra where sharks are caught as a bycatch. I am broadly interested in exploring the marine realm and finding solutions to resolve the complex problems of the Anthropocene.
Dissertation title: A comparative study of microplastics in benthic vs pelagic sharks of Malvan, Sindhudurg, Maharashtra
The objective of my dissertation study is to quantify and categorize the microplastics found in the gastro-intestinal tracts of four species of sharks, belonging to benthic and pelagic habitats and thus compare whether habitat influences the ingestion of microplastic particles. I sampled sharks for my study from the coast and harbours of Malvan, Maharashtra where sharks are caught as a bycatch. I am broadly interested in exploring the marine realm and finding solutions to resolve the complex problems of the Anthropocene.
V. Varshini, MTech in Biotechnology, RV College of Engineering, Bengaluru, 2022.
Dissertation title: Identifying species boundaries and cryptic diversity in the fossorial snake family Uropeltidae
My dissertation is on fossorial sheildtail snakes. I focused on the genus Uropeltis to understand the evolutionary relationships between species. The objective of my study is to reconstruct the phylogenetic relationships between species using a multi-locus gene dataset using Maximum likelihood and Bayesian methods and to delimit the species boundaries using genetic data. I used three mitochondrial 16S,12S, and ND4 genes to build the multilocus dataset and carry out the phylogenetic analysis.
Dissertation title: Identifying species boundaries and cryptic diversity in the fossorial snake family Uropeltidae
My dissertation is on fossorial sheildtail snakes. I focused on the genus Uropeltis to understand the evolutionary relationships between species. The objective of my study is to reconstruct the phylogenetic relationships between species using a multi-locus gene dataset using Maximum likelihood and Bayesian methods and to delimit the species boundaries using genetic data. I used three mitochondrial 16S,12S, and ND4 genes to build the multilocus dataset and carry out the phylogenetic analysis.
Harshal Patil, BS-MS, Indian Institute of Science Education and Research, Pune, 2022.
Dissertation title: Distribution and Diversity of Reef Associated Organisms in the Andaman Islands
The objective of my dissertation was to study the diversity of the reef-associated fauna and colonization trends of marine sessile invertebrates in the Andaman Islands using ARMS (Autonomous Reef Monitoring Structures). My study examined colonization differences due to location, surface orientation, and water flow. I used photographic analysis to study the ARMS assemblages across different sites on the east and west coasts of the South Andaman Islands.
Dissertation title: Distribution and Diversity of Reef Associated Organisms in the Andaman Islands
The objective of my dissertation was to study the diversity of the reef-associated fauna and colonization trends of marine sessile invertebrates in the Andaman Islands using ARMS (Autonomous Reef Monitoring Structures). My study examined colonization differences due to location, surface orientation, and water flow. I used photographic analysis to study the ARMS assemblages across different sites on the east and west coasts of the South Andaman Islands.
Haripriya Eswaran, M.Sc. Environmental Studies and Resource Management, TERI School of Advanced Studies, New Delhi, 2021.
Dissertation title: Study of the life history traits of commonly landed elasmobranchs based on a literature review and primary research in Malvan, Maharashtra
It is important to understand life history information of elasmobranchs in order to develop effective conservation measures. My study focused on estimating and comparing life-history traits for some of the commonly landed sharks and rays in Malvan, Maharashtra. The traits which were studied primarily included the length-weight relationship and size at first maturity. This study enhances our knowledge base for elasmobranchs in the Malvan region and highlights the need to understand their population dynamics and response to fishing pressure.
Dissertation title: Study of the life history traits of commonly landed elasmobranchs based on a literature review and primary research in Malvan, Maharashtra
It is important to understand life history information of elasmobranchs in order to develop effective conservation measures. My study focused on estimating and comparing life-history traits for some of the commonly landed sharks and rays in Malvan, Maharashtra. The traits which were studied primarily included the length-weight relationship and size at first maturity. This study enhances our knowledge base for elasmobranchs in the Malvan region and highlights the need to understand their population dynamics and response to fishing pressure.
Pooja Saravanan, M.Sc. Wildlife Biology, A.V.C. College, Mayiladuthurai, 2021.
Dissertation title: Beach profile characteristics of the mass nesting beach at Rushikulya, Odisha
The study explored the beach profile characteristics of Rushikulya, Odisha as a part of a long-term monitoring project of olive ridley sea turtles from 2012-2021. The study examined the beach profile characteristics and nesting intensity at different beaches to understand the possible influence of beach characteristics on nesting. The study also explored the influence of distance to the river mouth on beach characteristics and nesting intensity.
Dissertation title: Beach profile characteristics of the mass nesting beach at Rushikulya, Odisha
The study explored the beach profile characteristics of Rushikulya, Odisha as a part of a long-term monitoring project of olive ridley sea turtles from 2012-2021. The study examined the beach profile characteristics and nesting intensity at different beaches to understand the possible influence of beach characteristics on nesting. The study also explored the influence of distance to the river mouth on beach characteristics and nesting intensity.
Zakhiya PC, BS-MS, Indian Institute of Science Education and Research, Pune, 2020.
Dissertation title: Effect of species richness and composition on foraging niches in mixed- species bird flocks of Anshi National Park, Karnataka
The niche of an organism has been defined as ‘a multi-dimensional hypervolume’ of many variables. Mixed- species bird flocks are examples where a niche of an individual bird is potentially modified by the presence of other species while foraging. I used foraging height and behavior as representatives of the foraging niche to understand the effect of richness and composition of the flock on the foraging niches of individual participants. Overall, this study contributes to the understanding of the foraging niche modifications that act on an individual level while influencing the interactions at the group level in flocks.
Dissertation title: Effect of species richness and composition on foraging niches in mixed- species bird flocks of Anshi National Park, Karnataka
The niche of an organism has been defined as ‘a multi-dimensional hypervolume’ of many variables. Mixed- species bird flocks are examples where a niche of an individual bird is potentially modified by the presence of other species while foraging. I used foraging height and behavior as representatives of the foraging niche to understand the effect of richness and composition of the flock on the foraging niches of individual participants. Overall, this study contributes to the understanding of the foraging niche modifications that act on an individual level while influencing the interactions at the group level in flocks.
Somdipta Sen, M.Sc Biotechnology, St Xavier’s College (Autonomous), Kolkata, 2020.
Dissertation title: Patterns in vigilance, foraging and aggressive behaviour across a species richness gradient in mixed species bird flocks of Anshi National Park, Karnataka
Species may form heterospecific groups for foraging or anti-predatory benefits. Thus, group size should have an effect on foraging and/or vigilance rates in such groups. I studied mixed species bird flocks in Anshi National Park, Karnataka to understand the optimal flock composition(s) and size(s) of mixed species flocks of birds by quantifying the rate of vigilance, foraging efficiency and aggressive behaviour across different flocks.
Dissertation title: Patterns in vigilance, foraging and aggressive behaviour across a species richness gradient in mixed species bird flocks of Anshi National Park, Karnataka
Species may form heterospecific groups for foraging or anti-predatory benefits. Thus, group size should have an effect on foraging and/or vigilance rates in such groups. I studied mixed species bird flocks in Anshi National Park, Karnataka to understand the optimal flock composition(s) and size(s) of mixed species flocks of birds by quantifying the rate of vigilance, foraging efficiency and aggressive behaviour across different flocks.
Sudha Kotillil, M.Sc. Environmental Sciences, TERI University, New Delhi, 2020.
Dissertation title: Global review of phylogeography and population structure of different shark and ray species
The objective of my dissertation is to elucidate the global phylogeography of different shark and ray species by combining data from various studies. Synthesizing the available data in a global analysis would help in understanding population genetic structure of different species across different ocean basins, and the effect of barriers on the same. I am currently in my final semester of MSc. Environmental Studies and Resource Management from TERI School of Advanced Studies, New Delhi.
Dissertation title: Global review of phylogeography and population structure of different shark and ray species
The objective of my dissertation is to elucidate the global phylogeography of different shark and ray species by combining data from various studies. Synthesizing the available data in a global analysis would help in understanding population genetic structure of different species across different ocean basins, and the effect of barriers on the same. I am currently in my final semester of MSc. Environmental Studies and Resource Management from TERI School of Advanced Studies, New Delhi.
Shruthi Kotillil, M.Sc. Environmental Sciences, TERI University, New Delhi, 2020.
Dissertation title: Post capture survival rate, mortality and biology of vulnerable shark and ray species of India
The objective of the study is to understand the post capture survival of elasmobranchs and their vulnerability to capture in fishing gear. It involves studying various biological and fishing factors that influence survival rates as well as their catch rates among different fishing gears. The sampling sites include the coast and harbours of Malvan and Chennai.
Dissertation title: Post capture survival rate, mortality and biology of vulnerable shark and ray species of India
The objective of the study is to understand the post capture survival of elasmobranchs and their vulnerability to capture in fishing gear. It involves studying various biological and fishing factors that influence survival rates as well as their catch rates among different fishing gears. The sampling sites include the coast and harbours of Malvan and Chennai.
Mohit Mudliar, M.Sc. Wildlife Biology, Wildlife Institute of India, Dehradun, 2019.
Dissertation title: Patterns of foraging in the olive ridley (Lepidochelys olivacea) population on the east coast of India and habitat characteristics of the arribada nesting ground at Rushikulya
This study looked at the isotopic ratio of carbon in tissues of stranded olive ridley turtles in Rushikulya, Odisha and Chennai, Tamil Nadu. This was to check for differences in foraging area used by these two sub populations of turtles. The study also explored the characteristics of nesting beaches in Rushikulya and the microplastic concentration in beach sediments. I am currently working with Dakshin Foundation on long term monitoring project of olive ridley sea turtles in Odisha.
Dissertation title: Patterns of foraging in the olive ridley (Lepidochelys olivacea) population on the east coast of India and habitat characteristics of the arribada nesting ground at Rushikulya
This study looked at the isotopic ratio of carbon in tissues of stranded olive ridley turtles in Rushikulya, Odisha and Chennai, Tamil Nadu. This was to check for differences in foraging area used by these two sub populations of turtles. The study also explored the characteristics of nesting beaches in Rushikulya and the microplastic concentration in beach sediments. I am currently working with Dakshin Foundation on long term monitoring project of olive ridley sea turtles in Odisha.
Chandana Pusapati, M.Sc. Climate Science and Policy, TERI University, New Delhi, 2019.
Dissertation title: Effect of nest environment on olive ridley hatchling fitness
The study looked at the effect of nest environment, mainly temperature, on various hatchling morphology and fitness parameters. Nests were sampled from hatcheries in Odisha and Chennai to determine the effect of different temperatures on hatchling fitness. For morphology, hatchling carapace length, flipper and neck length were measured, along with weight. For testing locomotor performance, crawl speed and righting ability was measured. The results indicate that high nest temperatures have a significant effect on hatchling size which in turn affects the hatchling locomotor performance. Temperature also had a direct effect on the locomotor performance of the hatchlings, irrespective of the hatchling size.
Dissertation title: Effect of nest environment on olive ridley hatchling fitness
The study looked at the effect of nest environment, mainly temperature, on various hatchling morphology and fitness parameters. Nests were sampled from hatcheries in Odisha and Chennai to determine the effect of different temperatures on hatchling fitness. For morphology, hatchling carapace length, flipper and neck length were measured, along with weight. For testing locomotor performance, crawl speed and righting ability was measured. The results indicate that high nest temperatures have a significant effect on hatchling size which in turn affects the hatchling locomotor performance. Temperature also had a direct effect on the locomotor performance of the hatchlings, irrespective of the hatchling size.
Priyanka Hari Haran, M.S. Ecology, University of Pondicherry, 2018.
Dissertation title: Habitat correlates of mixed-species bird flocks
My dissertation looked at how habitat characteristics might influence different aspects of terrestrial mixed-species flocks of birds in the Western Ghats. I did my field work in Kali Tiger Reserve. I then worked with the Ashoka Trust for Research in Ecology and the Environment as an editorial assistant on a book for the MoEFCC on climate change and biodiversity in India. I am currently a research assistant with the Nature Conservation Foundation, and I'm studying bird species richness in restored forest patches and protected areas in the Anamalai Hills. I blog at https://beakofthetiger.wordpress.com/.
Dissertation title: Habitat correlates of mixed-species bird flocks
My dissertation looked at how habitat characteristics might influence different aspects of terrestrial mixed-species flocks of birds in the Western Ghats. I did my field work in Kali Tiger Reserve. I then worked with the Ashoka Trust for Research in Ecology and the Environment as an editorial assistant on a book for the MoEFCC on climate change and biodiversity in India. I am currently a research assistant with the Nature Conservation Foundation, and I'm studying bird species richness in restored forest patches and protected areas in the Anamalai Hills. I blog at https://beakofthetiger.wordpress.com/.
Gaurang Gowande, M.S. Biodiversity, Agasaheb Garware College, 2016.
Dissertation title: Phylogeography of Calotes versicolor in the Western Ghats of India
Calotes versicolor populations across the Indian peninsula were sampled, with species emphasis on the Western Ghats, and a 16S network and tree were built. The findings of the study demonstrate that Calotes versicolor is composed of multiple lineages, and the systematic status of these lineages needs to evaluated. I am currently working as a teaching assistant at the Department of Biotechnology, Fergusson College, Pune. I plan to continue my Master's dissertation work for my PhD, expanding the scope to the entire country, and with the addition of a few more agamid species.
Dissertation title: Phylogeography of Calotes versicolor in the Western Ghats of India
Calotes versicolor populations across the Indian peninsula were sampled, with species emphasis on the Western Ghats, and a 16S network and tree were built. The findings of the study demonstrate that Calotes versicolor is composed of multiple lineages, and the systematic status of these lineages needs to evaluated. I am currently working as a teaching assistant at the Department of Biotechnology, Fergusson College, Pune. I plan to continue my Master's dissertation work for my PhD, expanding the scope to the entire country, and with the addition of a few more agamid species.
Ashwini Mohan, M.S. Ecology, University of Pondicherry, 2015.
Dissertation title: Phylogeography of the Andaman keelback (Xenochrophis tytleri) in the Andaman Islands
The objective of this study was to test levels of gene flow between populations of the Andaman keelback in different islands of the Andaman group.. To understand this, we sequenced mitochondrial genes and carried out phylogeographic and population genetic analyses. The Andaman keelback shows strong population structure and gene flow between islands is limited only to certain populations. I am studying gecko species diversity in the Andaman and Nicobar Islands and intend to pursue a PhD on this topic.
Dissertation title: Phylogeography of the Andaman keelback (Xenochrophis tytleri) in the Andaman Islands
The objective of this study was to test levels of gene flow between populations of the Andaman keelback in different islands of the Andaman group.. To understand this, we sequenced mitochondrial genes and carried out phylogeographic and population genetic analyses. The Andaman keelback shows strong population structure and gene flow between islands is limited only to certain populations. I am studying gecko species diversity in the Andaman and Nicobar Islands and intend to pursue a PhD on this topic.
Vidyasagar Deshpande, M.Sc. Molecular Ecology, University of Mysore, 2014.
Dissertation title: A multi-gene molecular assessment of cryptic biodiversity in the ancient frog genus Nyctibatrachus from the Western Ghats, India
Current Position: Business Development Manager at Medgenome Pvt Ltd, Bangalore.
Dissertation title: A multi-gene molecular assessment of cryptic biodiversity in the ancient frog genus Nyctibatrachus from the Western Ghats, India
Current Position: Business Development Manager at Medgenome Pvt Ltd, Bangalore.
Vijay Ramesh, B.E. Biotechnology, RV College of Engineering, Bangalore, 2013.
Dissertation title: Identifying cryptic lineages within an endemic frog genus Indirana in the Westen Ghats
After completing my Masters at Columbia University, New York, I have been working as a spatial and computational ecologist at the Cary Institute of Ecosystem Studies, New York on projects related to land-use change and disease incidence. I provide statistical and spatial support to multiple projects that run in the lab, including data pre-processing, python scripting and visualization. See my webpage.
Dissertation title: Identifying cryptic lineages within an endemic frog genus Indirana in the Westen Ghats
After completing my Masters at Columbia University, New York, I have been working as a spatial and computational ecologist at the Cary Institute of Ecosystem Studies, New York on projects related to land-use change and disease incidence. I provide statistical and spatial support to multiple projects that run in the lab, including data pre-processing, python scripting and visualization. See my webpage.
Akash Verma, M.Sc. Environmental Studies, University of Delhi, New Delhi, 2013.
Dissertation title: Understanding the mass nesting behaviour of olive ridley turtles (Lepidochelys olivacea) using meteorological and lunar phase data
The project explored climate and lunar phase data to identify a cue for the arribada phenomenon in Odisha. No individual factor was isolated, but the study improved understanding of the mass nesting and provided a base on which a predictive model can be developed. I am currently teaching the Environmental Science module to Undergraduate students at Delhi University.
Dissertation title: Understanding the mass nesting behaviour of olive ridley turtles (Lepidochelys olivacea) using meteorological and lunar phase data
The project explored climate and lunar phase data to identify a cue for the arribada phenomenon in Odisha. No individual factor was isolated, but the study improved understanding of the mass nesting and provided a base on which a predictive model can be developed. I am currently teaching the Environmental Science module to Undergraduate students at Delhi University.
Rupsy Khurana, M.Sc. Biodiversity and Conservation, GGSIP University, New Delhi, 2013.
Dissertation title: Habitat utilization by vipers in Chengalpattu district, Tamil Nadu
This study examined the macro and microhabitat important for saw-scaled viper (Echis carinatus) in a human-dominated landscape in Chengalpattu district. Vegetation cover and bunds were found to be influencing the presence of the vipers. I am now an independent researcher, working on the ecological and social dimensions of human-dog-wildlife conflict in the Spiti Landscape, Himachal Pradesh with Chandrima Home, ATREE. I am involved in data analysis for this project.
Dissertation title: Habitat utilization by vipers in Chengalpattu district, Tamil Nadu
This study examined the macro and microhabitat important for saw-scaled viper (Echis carinatus) in a human-dominated landscape in Chengalpattu district. Vegetation cover and bunds were found to be influencing the presence of the vipers. I am now an independent researcher, working on the ecological and social dimensions of human-dog-wildlife conflict in the Spiti Landscape, Himachal Pradesh with Chandrima Home, ATREE. I am involved in data analysis for this project.
Peeyush Bhatt, M. Tech Biotechnology, Vellore Institute of Technology, 2013.
Dissertation title: A molecular systematic and morphological analysis to evaluate snake taxonomy and dispersal in India with reference to the genus Amphiesma
We used mitochondrial DNA sequences to construct a phylogenetic tree to investigate phylogenetic relationships and phylogeography of the genus Amphiesma in India. In addition, a study on the effect of habitat on morphological characters was also conducted using principle component analysis and cluster analysis. I am currently working at Strand Life Sciences, Bangalore.
Dissertation title: A molecular systematic and morphological analysis to evaluate snake taxonomy and dispersal in India with reference to the genus Amphiesma
We used mitochondrial DNA sequences to construct a phylogenetic tree to investigate phylogenetic relationships and phylogeography of the genus Amphiesma in India. In addition, a study on the effect of habitat on morphological characters was also conducted using principle component analysis and cluster analysis. I am currently working at Strand Life Sciences, Bangalore.
Mahi Puri, M.Sc. Environmental Sciences, TERI University, New Delhi, 2012.
Dissertation title: Multi-scale patterns in co-occurrence of rocky inter-tidal gastropods along the west coast of India
This study aimed at assessing the generality of co-occurrence patterns at a large spatial scale by comparing empirical association patterns with random patterns generated by simulations. A paper from the dissertation was published in Oikos. I am now a PhD student with Dr. Madan Oli at the Department of Wildlife Ecology and Conservation, University of Florida.
Dissertation title: Multi-scale patterns in co-occurrence of rocky inter-tidal gastropods along the west coast of India
This study aimed at assessing the generality of co-occurrence patterns at a large spatial scale by comparing empirical association patterns with random patterns generated by simulations. A paper from the dissertation was published in Oikos. I am now a PhD student with Dr. Madan Oli at the Department of Wildlife Ecology and Conservation, University of Florida.
Vishnupriya Sankararaman, M.Sc. Wildlife Biology and Conservation, NCBS, Bangalore, 2012.
Dissertation title: Effect of fishing on the assemblage structure of stream fishes in tropical hill streams of Pakke Tiger Reserve in Northeast India
The study compared head-water stream segments within and outside the protected area to examine effect of fishing on richness, abundance and body size of fishes. It also examined socio-economic factors, cultural fishing practices and attitudes towards conservation among the local fishers.
Currently, I work as a Research Consultant with WCS-India Program. I have been involved with documenting patterns of bird and amphibian diversity across agroforest landscapes of Karnataka's Western Ghats.
Dissertation title: Effect of fishing on the assemblage structure of stream fishes in tropical hill streams of Pakke Tiger Reserve in Northeast India
The study compared head-water stream segments within and outside the protected area to examine effect of fishing on richness, abundance and body size of fishes. It also examined socio-economic factors, cultural fishing practices and attitudes towards conservation among the local fishers.
Currently, I work as a Research Consultant with WCS-India Program. I have been involved with documenting patterns of bird and amphibian diversity across agroforest landscapes of Karnataka's Western Ghats.
Neha Pandey, M.Sc. Environment Management, GGSIP University, New Delhi, 2011.
Dissertation title: Addressing the issue of scale and sample size in species distribution modeling: A case study of Agamid lizards in the Western Ghats
This project examined the habitat suitability predictions from species distribution models (SDM) using MaxEnt algorithms within the Western Ghats for Agamid lizards (species presence data from the lab was used along with many abiotic and biotic variables). I also looked at how the prediction from SDM varies by changing the sample size and spatial scale. Currently, I am doing a PhD in evolutionary biology from JNCASR, Bangalore.
Dissertation title: Addressing the issue of scale and sample size in species distribution modeling: A case study of Agamid lizards in the Western Ghats
This project examined the habitat suitability predictions from species distribution models (SDM) using MaxEnt algorithms within the Western Ghats for Agamid lizards (species presence data from the lab was used along with many abiotic and biotic variables). I also looked at how the prediction from SDM varies by changing the sample size and spatial scale. Currently, I am doing a PhD in evolutionary biology from JNCASR, Bangalore.
Kalpana Das, M.Sc. Biodiversity and Conservation, GGSIP University, New Delhi, 2011.
Dissertation title: Geometric v/s Traditional morphometry: a comparative analysis to delineate the genera of frogs as well as species of Bufonidae in the Western Ghats, India
Morphometry is an essential part of anuran taxonomy. This study explored the potential of new geometric morphometric methods and compared them with traditionally used methods for the discrimination of genera of frogs, and species of family Bufonidae. Geometric methods were found to be useful for species level discrimination as they are able to capture high resolution shape data.
Dissertation title: Geometric v/s Traditional morphometry: a comparative analysis to delineate the genera of frogs as well as species of Bufonidae in the Western Ghats, India
Morphometry is an essential part of anuran taxonomy. This study explored the potential of new geometric morphometric methods and compared them with traditionally used methods for the discrimination of genera of frogs, and species of family Bufonidae. Geometric methods were found to be useful for species level discrimination as they are able to capture high resolution shape data.
Ema Fatima, M.Sc. Biodiversity and Conservation, GGSIP University, New Delhi, 2010.
Dissertation title: Population genetics and migration in sea turtles
The project explored two aspects of sea turtle migrations. The adult females swim from their foraging ground and return to their natal site for nesting. This behavior is fairly well understood. However, little is known about hatchling movement, after they emerge from nest and enter the sea. How do they reach particular foraging ground? Do they exhibit fidelity to foraging grounds as well? Is the movement towards foraging grounds 'directed'? Is the movement of hatchlings to foraging grounds is 'random' and dependent on ocean currents?
Dissertation title: Population genetics and migration in sea turtles
The project explored two aspects of sea turtle migrations. The adult females swim from their foraging ground and return to their natal site for nesting. This behavior is fairly well understood. However, little is known about hatchling movement, after they emerge from nest and enter the sea. How do they reach particular foraging ground? Do they exhibit fidelity to foraging grounds as well? Is the movement towards foraging grounds 'directed'? Is the movement of hatchlings to foraging grounds is 'random' and dependent on ocean currents?
Sasmita Mallick, M.Sc. Forestry, FRI University, Dehradun, 2010.
Dissertation title: A comparison of fishing practices and attitudes to and perception of sea turtle conservation along the southern Orissa coast
The overall goal of the project was to detai, the various kinds of fishing craft and gear used by the fishermen and their impact on sea turtles. It sought to break down the dichotomy between mechanised and non-mechanised fisheries and examine the various kinds of fisheries and to explore the attitudes, perceptions and awareness of these communities about sea turtle conservation, natural resource management, and conservation and fisheries laws. At present, I am working as an Assistant Manager in a PSU [United India Insurance Co. Ltd.].
Dissertation title: A comparison of fishing practices and attitudes to and perception of sea turtle conservation along the southern Orissa coast
The overall goal of the project was to detai, the various kinds of fishing craft and gear used by the fishermen and their impact on sea turtles. It sought to break down the dichotomy between mechanised and non-mechanised fisheries and examine the various kinds of fisheries and to explore the attitudes, perceptions and awareness of these communities about sea turtle conservation, natural resource management, and conservation and fisheries laws. At present, I am working as an Assistant Manager in a PSU [United India Insurance Co. Ltd.].
Swapnil Chaudhuri, M.Sc. Ecology, Pondicherry University, Pondicherry, 2008.
Dissertation title: Impact of Casuarina Plantations on olive ridley turtle nesting along the Northern Tamil Nadu coast, India
This work looked at the impact of Casuarina plantations on the beach profile (beach slope, width, temperature and sand dune vegetation) along the Tamil Nadu Coast. The study indicated that plantations have an adverse impact on beach slope and width making it difficult for turtles to nest during the nesting season. I am currently working as a programme officer at ICIMOD. My work is to coordinate the Kailash transboundary conservation and development landscape area and spend most of my time in the mountains.
Dissertation title: Impact of Casuarina Plantations on olive ridley turtle nesting along the Northern Tamil Nadu coast, India
This work looked at the impact of Casuarina plantations on the beach profile (beach slope, width, temperature and sand dune vegetation) along the Tamil Nadu Coast. The study indicated that plantations have an adverse impact on beach slope and width making it difficult for turtles to nest during the nesting season. I am currently working as a programme officer at ICIMOD. My work is to coordinate the Kailash transboundary conservation and development landscape area and spend most of my time in the mountains.
Other students
- Shruti Kedilaya, B.E. Biotechnology, RV College of Engineering, Bangalore, 2015.
- Akshatha Ramesh, B.E. Biotechnology, RV College of Engineering, Bangalore, 2015.
- Riju Shirin, B. Tech. Biotechnology, SRM University, Chennai, 2012.
- Saktheeswaran, M., M. Phil. Zoology, University of Madras, Chennai, 2010.
- Divya Karnad, M.Sc. Wildlife Biology and Conservation, NCBS, Bangalore, 2008.
- Charanya Srinivasan, B. Tech. Bioinformatics, Satyabhama University, Chennai, 2006.
Archana Bali, 1978 - 2014
Archana Bali was the first student to approach me for supervision on a Masters dissertation. From the first batch of the Masters in Wildlife Conservation at NCBS, Archana was studying mammals on coffee estates. Dr. Ajith Kumar, the Director of the programme and a mammalogist, was her primary supervisor, so there was no problem there. But Archana was also determined to study policy - how various laws affected conservation on these estates. I remain unsure as to why I became her mentor in this endeavour, but then, no one could say 'No' to Archana. Having coaxed all sorts of information out of estate managers and owners for her thesis, she left for the University of Alaska, Fairbanks as the first George Shaller Fellow for a PhD on human-caribou systems in the context of climate change. She worked with indigenous peoples from Alaska to Quebec and produced the 'Voices of the Caribou People' an award winning film. Archana was a star in every way. Tragically, Archana was diagnosed with ovarian cancer in 2013. After a long battle that she fought with courage and cheer that only she could muster, she passed away in 2014. All those who knew Archana will remember her as one of the most cheerful, caring and irresistibly charming persons they will ever meet. Her passing robbed her family and the community of a champion and a friend.
