Spatio-temporal variation in mangrove crab diversity in five estuaries of Kerala, India

IF 2.1 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science Pub Date : 2024-09-21 DOI:10.1016/j.rsma.2024.103830

K.P. Apreshgi , K.V Aneesh Kumar , Sileesh Mullasseri , Kurian Mathew Abraham

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Abstract

The present study investigated the community structure and faunal composition of mangrove crab assemblage of five estuaries in Kerala. Mangrove crabs were collected from different estuaries namely Puthuvype, Ayiramthengu, Dhalavapuram, Pullichira and Kottaramthuruth from January 2015 to December 2015. The numerical abundance was directly enumerated by handpicking crabs from the estuarial mangrove region from 100×100 cm quadrats from the estuarine mangrove regions. Thirteen brachyuran crab species were identified across the five estuaries, along with environmental and sedimentological parameters. Various diversity indices were calculated for spatial temporal comparisons. The study revealed that four of the estuaries exhibited similar crab species diversity, while Pullichira differed, displaying the lowest diversity due to habitat characteristics such as small islands or sand dunes and shallow depth. The calculated indices for species diversity, richness, dominance, evenness, taxonomic and phylogenetic relationships provide insights into the spatio-temporal variations of mangrove crab diversity. This study serves as a benchmark reference for future studies in these estuaries, and further monitoring and assessment of mangrove ecosystem health could support the development of ecosystem-based management strategies for deteriorating mangrove ecosystems.

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印度喀拉拉邦五个河口红树林蟹多样性的时空变化

本研究调查了喀拉拉邦五个河口的红树林蟹群落结构和动物组成。研究人员于2015年1月至2015年12月期间在不同的河口（即Puthuvype、Ayiramthengu、Dhalavapuram、Pullichira和Kottaramthuruth）采集了红树林蟹。从河口红树林区域的 100×100 厘米四分格中用手摘取螃蟹，直接计算数量丰度。确定了五个河口的 13 个糠虾蟹类物种以及环境和沉积物参数。计算了各种多样性指数，以进行时空比较。研究显示，其中四个河口的螃蟹物种多样性相似，而普利希拉河口则有所不同，由于小岛或沙丘和水深较浅等生境特征，其物种多样性最低。计算得出的物种多样性、丰富度、优势度、均匀度、分类学和系统发育关系指数有助于深入了解红树林螃蟹多样性的时空变化。这项研究为今后在这些河口的研究提供了基准参考，进一步监测和评估红树林生态系统的健康状况有助于为日益恶化的红树林生态系统制定基于生态系统的管理策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Regional Studies in Marine Science Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics

CiteScore

3.90

自引率

4.80%

发文量

336

审稿时长

69 days

期刊介绍： REGIONAL STUDIES IN MARINE SCIENCE will publish scientifically sound papers on regional aspects of maritime and marine resources in estuaries, coastal zones, continental shelf, the seas and oceans.