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Diversity patterns of leaf-associated aquatic hyphomycetes along a broad latitudinal gradient

Jabiol, Jérémy and Bruder, Andreas and Gessner, Mark O. and Makkonen, Marika and McKie, Brendan G. and Peeters, Edwin T.H.M. and Vos, Veronique C. A. and Chauvet, Eric Diversity patterns of leaf-associated aquatic hyphomycetes along a broad latitudinal gradient. (2013) Fungal Ecology, 6 (5). 439-448. ISSN 1754-5048

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Official URL: http://dx.doi.org/10.1016/j.funeco.2013.04.002

Abstract

Information about the global distribution of aquatic hyphomycetes is scarce, despite the primary importance of these fungi in stream ecosystem functioning. In particular, the relationship between their diversity and latitude remains unclear, due to a lack of coor- dinated surveys across broad latitudinal ranges. This study is a first report on latitudinal patterns of aquatic hyphomycete diversity associated with native leaf-litter species in five streams located along a gradient extending from the subarctic to the tropics. Exposure of leaf litter in mesh bags of three different mesh sizes facilitated assessing the effects of including or excluding different size-classes of litter-consuming invertebrates. Aquatic hyphomycete evenness was notably constant across all sites, whereas species richness and diversity, expressed as the Hill number, reached a maximum at mid-latitudes (Medi- terranean and temperate streams). These latitudinal patterns were consistent across litter species, despite a notable influence of litter identity on fungal communities at the local scale. As a result, the bell-shaped distribution of species richness and Hill diversity devi- ated markedly from the latitudinal patterns of most other groups of organisms. Differences in the body-size distribution of invertebrate communities colonizing the leaves had no effect on aquatic hyphomycete species richness, Hill diversity or evenness, but inverte- brates could still influence fungal communities by depleting litter, an effect that was not captured by the design of our experiment.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Fungal Ecology website : http://www.sciencedirect.com/science/journal/17545048
HAL Id:hal-00958291
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Leibniz-Institut für Gewässerökologie und Binnenfischerei - IGB (GERMANY)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Technische Universität Berlin - TU Berlin (GERMANY)
Other partners > Umea University (SWEDEN)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Wageningen University & Research - WUR (NETHERLANDS)
Other partners > Swiss Federal Institute of Aquatic Science and Technology - EAWAG (SWITZERLAND)
Other partners > Sveriges lantbruksuniversitet - SLU (SWEDEN)
Other partners > Eidgenössische Technische Hochschule Zürich - ETHZ (SWITZERLAND)
Other partners > Vrije University Amsterdam - VU (NETHERLANDS)
Laboratory name:
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Deposited By: Eric Chauvet
Deposited On:12 Mar 2014 10:09

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