基于底栖无脊椎动物加强河漫滩生态质量评估

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Aquatic Conservation-Marine and Freshwater Ecosystems Pub Date : 2024-08-21 DOI:10.1002/aqc.4242

Igor Kokavec, Tomáš Navara, Emília Mišíková Elexová, Margita Lešťáková, Miroslav Mláka, Soňa Ščerbáková, Zuzana Vráblová, Miroslav Očadlík

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引用次数: 0

摘要

冲积平原是河流景观的重要组成部分，对大河的生物多样性和生态完整性至关重要。然而，在评估主河道的生态状况时，它们往往被忽视和低估。本研究的主要目的是根据底栖无脊椎动物，确定评估多瑙河洪泛区（斯洛伐克）侧臂生态状况的最相关方案。对多瑙河主河道生态状况的计算方法进行了调整，以适应洪泛区的环境条件，并以此来衡量六个在分类学上不同的洪泛区指数的评估准确性。这项研究基于在 19 个取样点进行的底栖无脊椎动物多样性综合调查，取样点覆盖了邑潭侧臂和副潭侧臂。根据与生态状况等级阈值相关的预测值，对与生态状况有明显相关性的三个洪泛区指数进行了分类。基于多毛纲、寡毛纲、粘毛纲、等足纲和两足纲（FI_P）的洪泛区指数显示出最佳结果，与常用的侧生栖息地分类非常一致。虽然它将 eupotamon 分成了两个亚类，即主河道和侧臂，但将两种不同的 eupotamal 生境纳入分类，支持了侧臂的地貌变化及其生态演替程度。讨论了根据侧臂栖息地分类计划进行评估的不足之处，强调了采用这种方法评估洪泛区水域及其保护管理的重要性。

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Enhancing the Ecological Quality Assessment of River Floodplains Based on Benthic Invertebrates

Floodplains are crucial components of river landscape, essential for the biodiversity and ecological integrity of large rivers. However, they are often overlooked and underestimated when assessing the ecological status of the main river channel.
The main objective of this study was to identify the most relevant scheme for assessing the ecological status of side arms in the Danube floodplain (Slovakia) based on benthic invertebrates.
The calculation of ecological status for the Danube main channel was adapted to the environmental conditions of the floodplain as a measure of the evaluation accuracy of six taxonomically different floodplain indexes. The study was based on a comprehensive survey of benthic invertebrate diversity conducted at 19 sampling sites, covering eupotamal and parapotamal side arms.
Three floodplain indexes that significantly correlated with ecological status were categorised based on predicted values in relation to status class thresholds. The floodplain index based on Polychaeta, Oligochaeta, Mysida, Isopoda and Amphipoda (FI_P) showed the best result, aligning closely with the commonly used classification of lateral habitats. Although it divides the eupotamon into two subclasses, a main channel and a side arm, the inclusion of two different eupotamal habitats in the classification supports the geomorphological variability of side arms and their degree of ecological succession.
The shortcomings of the assessment based on the lateral habitat classification scheme are discussed, emphasising the importance of applying this method for the assessment of floodplain waters and their conservation management.

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来源期刊

Aquatic Conservation-Marine and Freshwater Ecosystems 环境科学-海洋与淡水生物学

CiteScore

5.50

自引率

4.20%

发文量

143

审稿时长

18-36 weeks

期刊介绍： Aquatic Conservation: Marine and Freshwater Ecosystems is an international journal dedicated to publishing original papers that relate specifically to freshwater, brackish or marine habitats and encouraging work that spans these ecosystems. This journal provides a forum in which all aspects of the conservation of aquatic biological resources can be presented and discussed, enabling greater cooperation and efficiency in solving problems in aquatic resource conservation.