|Appears in Collections:||Biological and Environmental Sciences Journal Articles|
|Peer Review Status:||Refereed|
|Title:||Beta diversity of stream insects differs between boreal and subtropical regions, but land use does not generally cause biotic homogenization|
|Author(s):||Petsch, Danielle K|
Saito, Victor S
Landeiro, Victor L
Silva, Thiago S F
Bini, Luis M
Tolonen, Kimmo T
Melo, Adriano S
latitudinal diversity gradient
|Citation:||Petsch DK, Saito VS, Landeiro VL, Silva TSF, Bini LM, Heino J, Soininen J, Tolonen KT, Jyrkänkallio-Mikkola J, Pajunen V, Siqueira T & Melo AS (2021) Beta diversity of stream insects differs between boreal and subtropical regions, but land use does not generally cause biotic homogenization. Freshwater Science, 40 (1), pp. 53-64. https://doi.org/10.1086/712565|
|Abstract:||Previous studies have found mixed results regarding the relationship between beta diversity and latitude. In addition, by influencing local environmental heterogeneity, land use may modify spatial taxonomic and functional variability among communities causing biotic differentiation or homogenization. We tested 1) whether taxonomic and functional beta diversities among streams within watersheds differ between subtropical and boreal regions and 2) whether land use is related to taxonomic and functional beta diversities in both regions. We sampled aquatic insects in 100 subtropical (Brazil) and 100 boreal (Finland) streams across a wide gradient of land use, including agriculture and exotic planted, secondary, and native forests. We calculated beta diversity at the watershed scale (among 5 streams in each watershed). We found higher taxonomic beta diversity among subtropical than among boreal streams, whereas functional beta diversity was similar between the 2 regions. Total land use was positively correlated with taxonomic and functional beta diversity among subtropical streams, while local environmental heterogeneity was positively correlated with beta diversity among boreal streams. We suggest that different types and intensities of land use may increase among-stream heterogeneity, promoting distinct insect assemblage compositions among streams. Our findings also suggest that beta diversity patterns and their underlying determinants are highly context dependent.|
|Rights:||This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. © 2020 by The Society for Freshwater Science. Petsch DK, Saito VS, Landeiro VL, Silva TSF, Bini LM, Heino J, Soininen J, Tolonen KT, Jyrkänkallio-Mikkola J, Pajunen V, Siqueira T & Melo AS (2021) Beta diversity of stream insects differs between boreal and subtropical regions, but land use does not generally cause biotic homogenization. Freshwater Science, 40 (1), pp. 53-64. https://doi.org/10.1086/712565|
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