The relationships between biotic uniqueness and abiotic uniqueness are context dependent across drainage basins worldwide

IF 4 2区环境科学与生态学 Q1 ECOLOGY

Landscape Ecology Pub Date : 2024-04-05 DOI:10.1007/s10980-024-01883-3

Henna Snåre, Jorge García-Girón, Janne Alahuhta, Luis Mauricio Bini, Pál Boda, Núria Bonada, Leandro S. Brasil, Marcos Callisto, Diego M. P. Castro, Kai Chen, Zoltán Csabai, Thibault Datry, Sami Domisch, Jaime R. García-Marquez, Mathieu Floury, Nikolai Friberg, Brian A. Gill, Juan David González-Trujillo, Emma Göthe, Peter Haase, Neusa Hamada, Matthew J. Hill, Jan Hjort, Leandro Juen, Jonathan F. Jupke, Ana Paula Justino de Faria, Zhengfei Li, Raphael Ligeiro, Marden S. Linares, Ana Luiza-Andrade, Diego R. Macedo, Kate L. Mathers, Andres Mellado-Diaz, Djuradj Milosevic, Nabor Moya, N. LeRoy Poff, Robert J. Rolls, Fabio O. Roque, Victor S. Saito, Leonard Sandin, Ralf B. Schäfer, Alberto Scotti, Tadeu Siqueira, Renato Tavares Martins, Francisco Valente-Neto, Beixin Wang, Jun Wang, Zhicai Xie, Jani Heino

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引用次数: 0

Abstract

Context

Global change, including land-use change and habitat degradation, has led to a decline in biodiversity, more so in freshwater than in terrestrial ecosystems. However, the research on freshwaters lags behind terrestrial and marine studies, highlighting the need for innovative approaches to comprehend freshwater biodiversity.

Objectives

We investigated patterns in the relationships between biotic uniqueness and abiotic environmental uniqueness in drainage basins worldwide.

Methods

We compiled high-quality data on aquatic insects (mayflies, stoneflies, and caddisflies at genus-level) from 42 drainage basins spanning four continents. Within each basin we calculated biotic uniqueness (local contribution to beta diversity, LCBD) of aquatic insect assemblages, and four types of abiotic uniqueness (local contribution to environmental heterogeneity, LCEH), categorized into upstream land cover, chemical soil properties, stream site landscape position, and climate. A mixed-effects meta-regression was performed across basins to examine variations in the strength of the LCBD-LCEH relationship in terms of latitude, human footprint, and major continental regions (the Americas versus Eurasia).

Results

On average, relationships between LCBD and LCEH were weak. However, the strength and direction of the relationship varied among the drainage basins. Latitude, human footprint index, or continental location did not explain significant variation in the strength of the LCBD-LCEH relationship.

Conclusions

We detected strong context dependence in the LCBD-LCEH relationship across the drainage basins. Varying environmental conditions and gradient lengths across drainage basins, land-use change, historical contingencies, and stochastic factors may explain these findings. This context dependence underscores the need for basin-specific management practices to protect the biodiversity of riverine systems.

Abstract Image

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生物独特性与非生物独特性之间的关系取决于世界各地流域的具体情况

背景全球变化（包括土地使用变化和栖息地退化）导致生物多样性减少，淡水生态系统的情况比陆地生态系统更为严重。我们调查了全球 42 个流域的生物独特性与非生物环境独特性之间的关系模式。方法我们汇编了横跨四大洲的 42 个流域的水生昆虫（蜉蝣、石蝇和笛蝇属级）的高质量数据。在每个流域内，我们计算了水生昆虫群落的生物独特性（当地对贝塔多样性的贡献，LCBD）和四种非生物独特性（当地对环境异质性的贡献，LCEH），分为上游土地覆盖、化学土壤特性、溪流所在地景观位置和气候。对不同流域进行了混合效应元回归，以考察 LCBD 与 LCEH 关系的强度在纬度、人类足迹和主要大陆地区（美洲与欧亚大陆）方面的差异。结果平均而言，LCBD 与 LCEH 之间的关系较弱，但不同流域之间关系的强度和方向各不相同。纬度、人类足迹指数或大陆位置并不能解释 LCBD-LCEH 关系强度的显著变化。各流域不同的环境条件和梯度长度、土地利用变化、历史突发事件以及随机因素都可能解释这些发现。这种环境依赖性突出表明，需要采取针对具体流域的管理措施来保护河流系统的生物多样性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Landscape Ecology 环境科学-地球科学综合

CiteScore

8.30

自引率

7.70%

发文量

164

审稿时长

8-16 weeks

期刊介绍： Landscape Ecology is the flagship journal of a well-established and rapidly developing interdisciplinary science that focuses explicitly on the ecological understanding of spatial heterogeneity. Landscape Ecology draws together expertise from both biophysical and socioeconomic sciences to explore basic and applied research questions concerning the ecology, conservation, management, design/planning, and sustainability of landscapes as coupled human-environment systems. Landscape ecology studies are characterized by spatially explicit methods in which spatial attributes and arrangements of landscape elements are directly analyzed and related to ecological processes.