Scholarlink

<p>Zooplankton assemblages and their relationship with environmental variables were studied in the Karanja estuary from January 2022 to March 2023. Thirty-seven zooplankton taxa were identified from the 60 samples, with copepoda emerging as the dominant group, contributing 33.6% of total abundance, followed by decapoda larvae (16.75%). Two-away ANOVA depicted significant spatiotemporal variation (<i>p</i> &lt; 0.05) of zooplankton community structure. Zooplankton abundance peaked during the monsoon season (248.94 ± 24.35 ind. m<sup>−3</sup>), followed by the pre-monsoon (200.65 ± 7.40 ind. m<sup>−3</sup>), and post-monsoon seasons (83.9 ± 2. 85 ind. m<sup>−3</sup>). Multivariate, biotic-environmental (BIO-ENV), and redundancy analyses revealed salinity, temperature, nitrite, nitrate, and transparency are the prevailing environmental parameters affecting zooplankton dynamics. Seasonal diversity indices, including the Shannon–Wiener index (2.56 ± 0.35), Margalef index (4.25 ± 1.05), and Pielou’s index (0.97 ± 0.01) indicate a functionally healthy and diverse zooplankton community. Indicator species analysis (<i>IndVal</i>) revealed that <i>Calanus</i> sp., <i>Centropages</i> sp., <i>Acartia</i> sp., <i>Oithona</i> sp., and <i>Diphyes dispar</i> and <i>Pleurobrachia pileus</i> are potential indicators of environmental changes for a particular season. This study highlights the utility of zooplankton community structure as an indicator of estuarine ecosystem health and environmental variation. Identifying seasonal-specific indicator taxa facilitates practical tools for long-term monitoring systems. Overall, the findings provide a scientific basis for formulating effective management strategies for conserving the biodiversity of the Karanja estuary.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Unveiling the spatiotemporal variation of zooplankton community structure and their relationship with environmental variables using multivariate analysis in a tropical mangrove estuary

  • 期刊论文

  • 发表日期：

    2025年6月24日

查看全文
  • Suman Nama,
  • Ashna Shanmughan,
  • Sahina Akter,
  • Abhilash Wodeyar K,
  • Shashi Bhushan,
  • Karankumar Ramteke,
  • Geetanjali Deshmukhe,
  • Ashok Kumar Jaiswar,
  • Annam Pavan Kumar,
  • Binaya Bhusan Nayak

摘要

Zooplankton assemblages and their relationship with environmental variables were studied in the Karanja estuary from January 2022 to March 2023. Thirty-seven zooplankton taxa were identified from the 60 samples, with copepoda emerging as the dominant group, contributing 33.6% of total abundance, followed by decapoda larvae (16.75%). Two-away ANOVA depicted significant spatiotemporal variation (p < 0.05) of zooplankton community structure. Zooplankton abundance peaked during the monsoon season (248.94 ± 24.35 ind. m−3), followed by the pre-monsoon (200.65 ± 7.40 ind. m−3), and post-monsoon seasons (83.9 ± 2. 85 ind. m−3). Multivariate, biotic-environmental (BIO-ENV), and redundancy analyses revealed salinity, temperature, nitrite, nitrate, and transparency are the prevailing environmental parameters affecting zooplankton dynamics. Seasonal diversity indices, including the Shannon–Wiener index (2.56 ± 0.35), Margalef index (4.25 ± 1.05), and Pielou’s index (0.97 ± 0.01) indicate a functionally healthy and diverse zooplankton community. Indicator species analysis (IndVal) revealed that Calanus sp., Centropages sp., Acartia sp., Oithona sp., and Diphyes dispar and Pleurobrachia pileus are potential indicators of environmental changes for a particular season. This study highlights the utility of zooplankton community structure as an indicator of estuarine ecosystem health and environmental variation. Identifying seasonal-specific indicator taxa facilitates practical tools for long-term monitoring systems. Overall, the findings provide a scientific basis for formulating effective management strategies for conserving the biodiversity of the Karanja estuary.