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Showing 103 results for Type of Study: Original Research Article

Lina Chatterjee, Abhik Rong, C. S. Samrat, Saswati Sinha, Tarak Samanta, Arjan Basu Roy,
Volume 6, Issue 4 (9-2024)
Abstract

This study aims to investigate the feeding behaviour and diving habits of the Little Cormorant (Microcarbo niger) in the vicinity of Pakhibitan, which is a component of Ecopark, the largest urban park located in Newtown, Kolkata, West Bengal, India. The study took place for three days a week starting from September 2021 to February 2022. The Little Cormorant mostly used the Lake as a foraging location in Pakhibitan, with the highest number of dives (1957 dives, 10.78 ± 10.43 sec) and surface pauses (1980 surface pauses, 6.02 ± 5.48 sec) compared to a nearby smaller pond. The pattern of dive bout/surface pause showed considerable variability between lake (F = 1.055, df = 1, P > 0.05) and pond (F = 0.153, df = 1, P > 0.05). There may be a correlation between the average duration of dives and the average recovery time between dives, and the depth of the water bodies. In certain cases, longer dives were associated with longer rest periods, resulting in increased time spent searching for prey. Consequently, the foraging efficiency of the dives may decrease as the diving depth increases. The feeding behaviour of the Little Cormorant is subject to the influence of various environmental conditions, necessitating a more comprehensive investigation.

Bach Pham Son, Quy Le Hoang, Vu Nguyen Dang Hoang, Quang Ngo Xuan, Liem Nguyen Duy, Quyen Le Khac,
Volume 7, Issue 1 (3-2025)
Abstract

Vietnam is renowned for its exceptional biodiversity with birds representing the most diverse group of vertebrates in the country. Despite this richness, data on bird species composition, distribution, and populations in Vietnam remain limited, necessitating enhanced research efforts. This study addresses the research gap in Ba Ria Vung Tau (BRVT) Province, where existing studies have predominantly focused on the Binh Chau Phuoc Buu (BCPB) Nature Reserve and Con Dao National Park. Our research provides a comprehensive avian checklist and distribution data for BRVT resulting from surveys of six key ecosystems: urban areas, agricultural lands, coastal mangrove forests, tropical evergreen forests, inland freshwater bodies, and rivers and canals. Excluding BCPB and Con Dao, we conducted surveys from October 2022 to October 2023 at 52 sites using the Point Transect method. This study recorded 142 bird species, including 6 newly documented species for the province, expanding the provincial checklist to 375 species across 78 families and 21 orders. Among these, 146 species are migratory and 229 are resident. Additionally, 40 species had updated taxonomic classifications and 15 species were identified as endangered. Our findings emphasize the critical need for conservation efforts in tropical evergreen forests, inland freshwater bodies, rivers and canals, and coastal mangrove forests. Effective biodiversity management in BRVT will require increased collaboration with local communities to ensure successful conservation outcomes.

Emin Bozkurt, Arda Emre Kandil,
Volume 7, Issue 1 (3-2025)
Abstract

Global climate change affects the physical, morphological, and behavioral characteristics of reptiles. Sometimes reptiles may undergo spatial changes to cope with global climate change. Under the influence of global climate change, reptiles show many different responses, including habitat shifting, range expansion, habitat loss, or extinction. In this study, 117 locality records of Montivipera xanthina were used in conjunction with the program MaxEnt within the context of current (1981–2010) and five different future (2071–2100) climate change predictions (GFDL-ESM4, IPSL-CM6A-LR, MPI-ESM1-2-HR, MRI-ESM2-0, and UKESM1-0-LL) in two shared socioeconomic pathways (ssp126 and ssp585). Further, habitat probability analysis was conducted for all predictions. The gain-loss analysis suggests that M. xanthina will lose 28.90% and 59.89% of the current distribution range under ssp126 and ssp 585 scenarios, respectively. The Bosphorus, Taurus Mountains in the Mediterranean region, Marmara region, and the Peloponnese were recovered as suitable areas of occupation in all future scenarios.


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