湄公河河口十足类和口足类多样性及其分布与环境参数的关系

IF 1.8 3区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Thai Thanh Tran, Ngo Xuan Quang, Nguyen Thi Phuong Thao, Thanh Luu Pham
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引用次数: 0

摘要

甲壳类动物在维持生态系统平衡和支持人类营养方面发挥着至关重要的作用,在其生命周期的关键阶段严重依赖河口栖息地。然而,对湄公河河口甲壳类动物群落的研究仍然有限,尽管它们对当地渔业和粮食安全具有重要意义。本研究旨在调查十足类和口足类甲壳类动物的多样性和分布,并确定影响其格局的关键生态因子。从2022年3月到11月,在湄公河河口系统内的夸代、八莱、含隆和错谦四个河口采集了甲壳类标本和水质数据。共记录标本13134份,共62种,其中十足类55种,口足类7种,以对虾科、对虾科和拟虾科居多。最丰富的种类包括马氏大臂虾、神奇虾、越南外虾,以及硬威拟虾和利氏后虾。分析表明,物种组成和丰度存在显著的时空差异。旱季甲壳类动物密度显著高于同期(163.21±206.69)。/1000 m2),在瓜岱口(163.50±211.15)。/1000 m2),外河口区(155.96±166.74个/1000 m2)。多样性指数包括Shannon-Wiener、Margalef和均匀度在季节和地点之间也存在显著差异。这些模式可能受到环境因素的影响。特别是甲壳类动物的丰度和多样性与溶解氧和盐度呈正相关,表明它们是组合结构的关键决定因素。在观察到的甲壳类动物组合中,仅盐度就造成了大约三分之一的变化。这些发现为管理和保护甲壳类动物群落提供了宝贵的见解,特别是在环境变化和捕捞压力增加的背景下。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Diversity and distribution of Decapoda and Stomatopoda from the Mekong estuaries in relation to environmental parameters

Crustaceans play a vital role in maintaining ecosystem balance and supporting human nutrition, relying heavily on estuarine habitats during critical stages of their life cycles. However, research on crustacean assemblages in the Mekong estuaries remains limited, despite their significance to local fisheries and food security. This study aimed to investigate the diversity and distribution of decapod and stomatopod crustaceans, while also identifying key ecological factors influencing their patterns. From March and November 2022, crustacean specimens and water quality data were collected from four estuaries: Cua Dai, Ba Lai, Ham Luong, and Co Chien, within the Mekong estuarine system. A total of 13,134 specimens were recorded, representing 62 species (55 decapods and 7 stomatopods), with the families Penaeidae, Palaemonidae, and Alpheidae being the most dominant. The most abundant species included the palaemonids Macrobrachium equidens, M. mirabile, and Exopalaemon vietnamicus, along with the penaeids Parapenaeopsis hardwickii and Metapenaeus lysianassa. Analysis revealed significant spatiotemporal variations in species composition and abundance. Crustacean densities were notably higher during the dry season (163.21 ± 206.69 inds./1000 m2), at the Cua Dai estuary (163.50 ± 211.15 inds./1000 m2), and in the outer estuary area (155.96 ± 166.74 inds./1000 m2). Diversity indices including Shannon–Wiener, Margalef, and evenness, also varied significantly across seasons and locations. These patterns were likely influenced by environmental factors. In particular, crustacean abundances and diversities were positively correlated with dissolved oxygen and salinity, indicating these as key determinants of assemblage structure. Salinity alone was responsible for approximately one-third of the observed variation in the crustacean assemblages. The findings offer valuable insights for the management and conservation of crustacean assemblages, particularly in the context of environmental changes and increasing fishing pressures.

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来源期刊
Aquatic Sciences
Aquatic Sciences 环境科学-海洋与淡水生物学
CiteScore
3.90
自引率
4.20%
发文量
60
审稿时长
1 months
期刊介绍: Aquatic Sciences – Research Across Boundaries publishes original research, overviews, and reviews dealing with aquatic systems (both freshwater and marine systems) and their boundaries, including the impact of human activities on these systems. The coverage ranges from molecular-level mechanistic studies to investigations at the whole ecosystem scale. Aquatic Sciences publishes articles presenting research across disciplinary and environmental boundaries, including studies examining interactions among geological, microbial, biological, chemical, physical, hydrological, and societal processes, as well as studies assessing land-water, air-water, benthic-pelagic, river-ocean, lentic-lotic, and groundwater-surface water interactions.
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