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Biotic and abiotic variables influencing plant litter breakdown in streams: a global study

Boyero, Luz and Pearson, Richard G. and Hui, Cang and Gessner, Mark O. and Pérez, Javier and Alexandrou, Markos A. and Graça, Manuel A. S. and Cardinale, Bradley J. and Albariño, Ricardo J. and Arunachalam, Muthukumarasamy and Barmuta, Leon A. and Boulton, Andrew J. and Bruder, Andreas and Callisto, Marcos and Chauvet, Eric and Death, Russell G. and Dudgeon, David and Encalada, Andrea C. and Ferreira, Verónica and Figueroa, Ricardo and Flecker, Alexander S. and Gonçalves, José F. Jr and Helson, Julie E. and Iwata, Tomoya and Jinggut, Tajang and Mathooko, Jude M. and Mathuriau, Catherine and M'Erimba, Charles and Moretti, Marcelo S. and Pringle, Catherine M. and Ramírez, Alonso and Ratnarajah, Lavenia and Rincon, José and Yule, Catherine M. Biotic and abiotic variables influencing plant litter breakdown in streams: a global study. (2016) Proceedings of the Royal Society B: Biological Sciences, vol. 283 (n° 1829). pp. 1-10. ISSN 0962-8452

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Official URL: http://dx.doi.org/10.1098/rspb.2015.2664

Abstract

Plant litter breakdown is a key ecological process in terres- trial and freshwater ecosystems. Streams and rivers, in particular, contribute substantially to global carbon fluxes. However, there is little information available on the relative roles of different drivers of plant litter break- down in fresh waters, particularly at large scales. We present a global-scale study of litter breakdown in streams to compare the roles of biotic, climatic and other environ- mental factors on breakdown rates. We conducted an experiment in 24 streams encompassing latitudes from 47.88 N to 42.88 S, using litter mixtures of local species dif- fering in quality and phylogenetic diversity (PD), and alder (Alnus glutinosa) to control for variation in litter traits. Our models revealed that breakdown of alder was driven by climate, with some influence of pH, whereas variation in breakdown of litter mixtures was explained mainly by litter quality and PD. Effects of litter quality and PD and stream pH were more positive at higher temp- eratures, indicating that different mechanisms may operate at different latitudes. These results reflect global variability caused by multiple factors, but unexplained variance points to the need for expanded global-scale comparisons.

Item Type:Article
Additional Information:Thanks to The Royal Society Publishing. The definitive version is available at https://royalsociety.org/journals/ The original PDF of the article can be found at Proceedings of the Royal Society B website : http://rspb.royalsocietypublishing.org/content/283/1829/20152664
HAL Id:hal-01360648
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Universidade de Coimbra (PORTUGAL)
Other partners > Cornell University (USA)
Other partners > University of Hong Kong - HKU (CHINA)
Other partners > Leibniz-Institut für Gewässerökologie und Binnenfischerei - IGB (GERMANY)
Other partners > IKERBASQUE (SPAIN)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > James Cook University - JCU (AUSTRALIA)
Other partners > Massey University (NEW ZEALAND)
Other partners > Monash University (MALAYSIA)
Other partners > Technische Universität Berlin - TU Berlin (GERMANY)
Other partners > Universidad de Concepción - UDEC (CHILE)
Other partners > Universidad Nacional Autónoma de México - UNAM (MEXICO)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Universidad del País Vasco - Euskal Herriko Unibertsitatea - EHU (SPAIN)
Other partners > University of Toronto (CANADA)
Other partners > University of Yamanashi (JAPAN)
Other partners > African Institute for Mathematical Sciences - AIMS (SOUTH AFRICA)
Other partners > Swiss Federal Institute of Aquatic Science and Technology - EAWAG (SWITZERLAND)
Other partners > Egerton university (KENYA)
Other partners > Manonmaniam Sundaranar university (INDIA)
Other partners > Stellenbosch University - SU (SOUTH AFRICA)
Other partners > Eidgenössische Technische Hochschule Zürich - ETHZ (SWITZERLAND)
Other partners > Universidade de Brasília - UnB (BRAZIL)
Other partners > Universidad del Azuay - UDA (ECUADOR)
Other partners > Universidade Federal de Minas Gerais - UFMG (BRAZIL)
Other partners > University of Georgia - UGA (USA)
Other partners > University of Michigan - U-M (USA)
Other partners > Universidad Nacional del Comahue (ARGENTINA)
Other partners > University of New England - UNE (AUSTRALIA)
Other partners > Universidad de Puerto Rico - UPR (PUERTO RICO)
Other partners > Universidad San Francisco de Quito - USFQ (ECUADOR)
Other partners > University of Tasmania (AUSTRALIA)
Other partners > Universidad del Zulia - LUZ (VENEZUELA)
Other partners > University of California - UC Santa Barbara (USA)
Other partners > Universidade Vila Velha - UVV (BRAZIL)
Laboratory name:
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Deposited By: Eric Chauvet
Deposited On:19 Jul 2016 14:10

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