Department of Geography, Fakir Mohan University, Vyasa Vihar, Nuapadhi, Balasore 756089, Odisha, India.
Department of Cartographic Engineering, Federal University of Pernambuco, Recife, Pernambuco, Brazil.
Mar Pollut Bull. 2024 May;202:116321. doi: 10.1016/j.marpolbul.2024.116321. Epub 2024 Apr 3.
Currently, sea turtle habitats are being altered by climate change and human activities, with habitat loss posing an urgent threat to Indian sea turtles. Thus, the objective of this study is to analyze the dynamic shoreline alterations and their impacts on Olive Ridley Sea Turtle (ORT) nesting sites in Gahirmatha Marine Wildlife Sanctuary from 1990 to 2022. Landsat satellite images served as input datasets to assess dynamic shoreline changes. This study assessed shoreline alterations and their rates across 929 transects divided into four zones using the Digital Shoreline Analysis System (DSAS) software. The results revealed a significant 14-km northward shift in the nesting site due to substantial coastal erosion, threatening the turtles' Arribada. This study underscores the need for conservation efforts to preserve nesting environments amidst changing coastal landscapes, offering novel insights into the interaction between coastal processes and marine turtle nesting behaviors.
目前，气候变化和人类活动正在改变海龟的栖息地，而栖息地的丧失对印度海龟构成了紧迫的威胁。因此，本研究的目的是分析 1990 年至 2022 年期间加希姆哈马海洋野生动物保护区中海榄仁海龟（ORT）筑巢地的动态海岸线变化及其影响。陆地卫星图像作为输入数据集，用于评估动态海岸线变化。本研究使用数字海岸线分析系统（DSAS）软件，通过 929 个分为四个区的横切剖面评估了海岸线的变化及其速率。研究结果表明，由于沿海侵蚀严重，筑巢地向北移动了 14 公里，这对海龟的 Arribada 构成了威胁。本研究强调了保护工作的必要性，以保护不断变化的沿海景观中的筑巢环境，为海岸过程与海洋海龟筑巢行为之间的相互作用提供了新的见解。
