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Supplementary information files for The relationships between biotic uniqueness and abiotic uniqueness are context dependent across drainage basins worldwide

CC BY 4.0 ;DOI: 10.17028/rd.lboro.25586865.v1

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Title:
Supplementary information files for The relationships between biotic uniqueness and abiotic uniqueness are context dependent across drainage basins worldwide
Author: 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 Márquez ; 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 Mathers ; Andres Mellado-Díaz ; 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
Subjects: Aquatic insects ; Biodiversity ; Biological sciences ; Context dependence ; Earth sciences ; Ecological uniqueness ; Ecology ; Environmental sciences ; Freshwaters ; Streams
Description: (c) The Authors CC BY 4.0 Supplementary files for article The relationships between biotic uniqueness and abiotic uniqueness are context dependent across drainage basins worldwide 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.
Creation Date: 2024
Language: English
Identifier: DOI: 10.17028/rd.lboro.25586865.v1
Source: Loughborough University Institutional Repository

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Supplementary information files for The relationships between biotic uniqueness and abiotic uniqueness are context dependent across drainage basins worldwide

CC BY 4.0 ;DOI: 10.17028/rd.lboro.25586865.v1

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