巴西赤道大西洋maranh大陆架浮游动物群落功能多样性及空间分布

IF 3.2 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Marine environmental research Pub Date : 2025-09-06 DOI:10.1016/j.marenvres.2025.107509

Yago Bruno Silveira Nunes , Marco Valério Jansen Cutrim , Xiomara Franchesca Garcia Dias , Nuno Filipe Alves Correia de Melo , Ana Karoline Duarte dos Santos Sá , Quedyane Silva da Cruz

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引用次数: 0

摘要

maranh o大陆架（MCS）位于巴西赤道大西洋，是一个具有独特环境梯度和人为影响的动态生态系统。本研究对浮游动物群落的功能多样性和空间分布进行了研究，重点研究了桡足类动物在不同营养水平间能量传递的基本组成部分。采样在奥马科斯河口复合体（SMEC）内的三个河口区域- Cumã湾、奥马科斯湾和奥约瑟湾进行，以便进行全面的空间评估。共鉴定出98个分类群，其中奥马科斯岛的密度和生物量最高，反映了其作为生物多样性热点的相关性。功能多样性分析显示，各样带间存在显著差异， o Marcos区功能丰富度较高，而 o jossore区功能丰富度较低，生态脆弱性突出。根据当地环境条件，确定了杂食性、昼夜垂直迁移和广播繁殖等主要功能策略。Beta多样性表明物种在区域间的替代，强化了环境异质性的影响。这项工作为MCSs的可持续管理和保护提供了基本见解，强调了基于功能特征的方法对理解热带沿海生态系统恢复力的重要性。

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Functional diversity and spatial distribution of zooplankton communities on the Maranhão continental shelf, Brazilian equatorial Atlantic

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Functional diversity and spatial distribution of zooplankton communities on the Maranhão continental shelf, Brazilian equatorial Atlantic

The Maranhão Continental Shelf (MCS), located in the Brazilian equatorial Atlantic, is a dynamic ecosystem characterized by unique environmental gradients and anthropogenic influences. This study investigated the functional diversity and spatial distribution of zooplankton communities, with an emphasis on copepods, which are fundamental components in the transfer of energy between trophic levels. Sampling was conducted across three estuarine zones within the São Marcos Estuarine Complex (SMEC)— Cumã Bay, São Marcos Bay, and São José Bay, allowing for a comprehensive spatial assessment. A total of 98 taxa were identified, with the highest density and biomass recorded in São Marcos, reflecting its relevance as a biodiversity hotspot. Functional diversity analyses revealed significant differences between the transects, with greater functional richness in São Marcos and lower functional richness in São José, highlighting their ecological vulnerability. Predominant functional strategies, such as omnivorous, diurnal vertical migration and broadcast reproduction, have been identified in response to local environmental conditions. Beta diversity indicates species substitution between zones, reinforcing the influence of environmental heterogeneity. This work provides fundamental insights for sustainable management and conservation of MCSs, highlighting the importance of functional trait-based approaches for understanding the resilience of tropical coastal ecosystems.

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来源期刊

Marine environmental research 环境科学-毒理学

CiteScore

5.90

自引率

3.00%

发文量

217

审稿时长

46 days

期刊介绍： Marine Environmental Research publishes original research papers on chemical, physical, and biological interactions in the oceans and coastal waters. The journal serves as a forum for new information on biology, chemistry, and toxicology and syntheses that advance understanding of marine environmental processes. Submission of multidisciplinary studies is encouraged. Studies that utilize experimental approaches to clarify the roles of anthropogenic and natural causes of changes in marine ecosystems are especially welcome, as are those studies that represent new developments of a theoretical or conceptual aspect of marine science. All papers published in this journal are reviewed by qualified peers prior to acceptance and publication. Examples of topics considered to be appropriate for the journal include, but are not limited to, the following: – The extent, persistence, and consequences of change and the recovery from such change in natural marine systems – The biochemical, physiological, and ecological consequences of contaminants to marine organisms and ecosystems – The biogeochemistry of naturally occurring and anthropogenic substances – Models that describe and predict the above processes – Monitoring studies, to the extent that their results provide new information on functional processes – Methodological papers describing improved quantitative techniques for the marine sciences.