特有生物多样性热点地区鱼类组合的同质化:来自中国云贵高原 70 年数据的证据

IF 2.8 2区 生物学 Q2 ECOLOGY Freshwater Biology Pub Date : 2024-09-10 DOI:10.1111/fwb.14325
Lei Shi, Tao Xiang, Xianghong Dong, Chi Xu, Haijun Wang, Erik Jeppesen, Ping Xie
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引用次数: 0

摘要

人类活动和全球气候变化的综合影响威胁着本地鱼类群落。这些威胁在拥有众多特有物种的生物多样性热点地区尤为严重,中国与世隔绝的云贵高原就是一例。在这些地区,生物同质化的风险预计也会很高,但对这种风险及其潜在驱动因素的研究仍然很少。在此,我们建立了一个鱼类分布数据库,并使用环境筛选法对云贵高原流域的鱼类进行空间聚类(n = 3759)。该数据库基于公共数据来源,并对 1950 年至 2021 年期间的相关文献(n = 481)进行了全面回顾。我们将云贵高原分为九个子流域进行空间比较,并将其分为两个时期进行时间比较--1978 年经济开始快速增长发展之前和之后。我们发现:(a)替换(不同子流域的物种交换)和相似性指数略有增加,但物种丰富度差异指数有所下降,这表明整个高原的物种同质化和自然屏障的丧失;(b)物种丰富度增加的同时,系统发育多样性明显下降,这也表明高原物种同质化;(c)通过物种损失-增益分析,物种丰富度的增加与所有子流域的气候变量(温度和降水)、海拔高度和人类活动有关。时空比较表明,气候和人为压力加剧了云贵高原鱼类种群的同质化。观察到的鱼类物种同质化现象令人担忧,我们呼吁进行系统评估并采取预防性缓解行动,以保持云贵高原地区生物多样性的独特性。
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Homogenization of fish assemblages in an endemic biodiversity hot spot: Evidence from 70-year data from the Yun-Gui Plateau, China

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来源期刊
Freshwater Biology
Freshwater Biology 生物-海洋与淡水生物学
CiteScore
5.90
自引率
3.70%
发文量
162
审稿时长
2 months
期刊介绍: Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.
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