Riparian plant litter quality increases with latitude
Luz Boyero
,
Manuel A. S. Graça
,
Alan M. Tonin
,
Javier Pérez
,
Andrew J. Swafford
,
Verónica Ferreira
,
Andrea Landeira-Dabarca
,
Markos A. Alexandrou
,
Mark O. Gessner
,
Brendan G. Mckie
,
Ricardo J. Albariño
,
Leon A. Barmuta
,
Marcos Callisto
,
Julián Chará
,
Éric Chauvet
(1)
,
Checo Colón-Gaud
,
David Dudgeon
,
Andrea C. Encalada
,
Ricardo Figueroa
,
Alexander S. Flecker
,
Tadeusz Fleituch
,
André Frainer
,
José F. Gonçalves
,
Julie E. Helson
,
Tomoya Iwata
,
Jude Mathooko
,
Charles M’erimba
,
Catherine M. Pringle
,
Alonso Ramírez
,
Christopher M. Swan
,
Catherine M. Yule
,
Richard G. Pearson
Luz Boyero
- Fonction : Auteur
Manuel A. S. Graça
- Fonction : Auteur
Alan M. Tonin
- Fonction : Auteur
Javier Pérez
- Fonction : Auteur
Andrew J. Swafford
- Fonction : Auteur
Verónica Ferreira
- Fonction : Auteur
- PersonId : 770779
- ORCID : 0000-0001-7688-2626
Andrea Landeira-Dabarca
- Fonction : Auteur
Markos A. Alexandrou
- Fonction : Auteur
Mark O. Gessner
- Fonction : Auteur
Brendan G. Mckie
- Fonction : Auteur
Ricardo J. Albariño
- Fonction : Auteur
Leon A. Barmuta
- Fonction : Auteur
Marcos Callisto
- Fonction : Auteur
- PersonId : 770780
- ORCID : 0000-0003-2341-4700
Julián Chará
- Fonction : Auteur
Éric Chauvet
- Fonction : Auteur
- PersonId : 739090
- IdHAL : eric-chauvet
- ORCID : 0000-0001-8676-392X
- IdRef : 114977852
Checo Colón-Gaud
- Fonction : Auteur
David Dudgeon
- Fonction : Auteur
Andrea C. Encalada
- Fonction : Auteur
Ricardo Figueroa
- Fonction : Auteur
Alexander S. Flecker
- Fonction : Auteur
Tadeusz Fleituch
- Fonction : Auteur
- PersonId : 770942
- ORCID : 0000-0001-9362-2703
André Frainer
- Fonction : Auteur
José F. Gonçalves
- Fonction : Auteur
Julie E. Helson
- Fonction : Auteur
Tomoya Iwata
- Fonction : Auteur
- PersonId : 778930
- ORCID : 0000-0003-4258-0050
Jude Mathooko
- Fonction : Auteur
Charles M’erimba
- Fonction : Auteur
Catherine M. Pringle
- Fonction : Auteur
Alonso Ramírez
- Fonction : Auteur
Christopher M. Swan
- Fonction : Auteur
Catherine M. Yule
- Fonction : Auteur
Richard G. Pearson
- Fonction : Auteur
Résumé
Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by litter traits. Litter-trait variation may determine the latitudinal gradient in decomposition in streams, which is mainly microbial in the tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait variation for riparian litter. Variation cannot easily be inferred from existing leaf-trait databases, since nutrient resorption can cause traits of litter and green leaves to diverge. Here we present the first global-scale assessment of riparian litter quality by determining latitudinal variation (spanning 107°) in litter traits (nutrient concentrations; physical and chemical defences) of 151 species from 24 regions and their relationships with environmental factors and phylogeny. We hypothesized that litter quality would increase with latitude (despite variation within regions) and traits would be correlated to produce ‘syndromes’ resulting from phylogeny and environmental variation. We found lower litter quality and higher nitrogen:phosphorus ratios in the tropics. Traits were linked but showed no phylogenetic signal, suggesting that syndromes were environmentally determined. Poorer litter quality and greater phosphorus limitation towards the equator may restrict detritivore-mediated decomposition, contributing to the predominance of microbial decomposers in tropical streams.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Riparian plant litter quality increases with latitude
|
Résumé |
en
Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by litter traits. Litter-trait variation may determine the latitudinal gradient in decomposition in streams, which is mainly microbial in the tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait variation for riparian litter. Variation cannot easily be inferred from existing leaf-trait databases, since nutrient resorption can cause traits of litter and green leaves to diverge. Here we present the first global-scale assessment of riparian litter quality by determining latitudinal variation (spanning 107°) in litter traits (nutrient concentrations; physical and chemical defences) of 151 species from 24 regions and their relationships with environmental factors and phylogeny. We hypothesized that litter quality would increase with latitude (despite variation within regions) and traits would be correlated to produce ‘syndromes’ resulting from phylogeny and environmental variation. We found lower litter quality and higher nitrogen:phosphorus ratios in the tropics. Traits were linked but showed no phylogenetic signal, suggesting that syndromes were environmentally determined. Poorer litter quality and greater phosphorus limitation towards the equator may restrict detritivore-mediated decomposition, contributing to the predominance of microbial decomposers in tropical streams.
|
Auteur(s) |
Luz Boyero
, Manuel A. S. Graça
, Alan M. Tonin
, Javier Pérez
, Andrew J. Swafford
, Verónica Ferreira
, Andrea Landeira-Dabarca
, Markos A. Alexandrou
, Mark O. Gessner
, Brendan G. Mckie
, Ricardo J. Albariño
, Leon A. Barmuta
, Marcos Callisto
, Julián Chará
, Éric Chauvet
1
, Checo Colón-Gaud
, David Dudgeon
, Andrea C. Encalada
, Ricardo Figueroa
, Alexander S. Flecker
, Tadeusz Fleituch
, André Frainer
, José F. Gonçalves
, Julie E. Helson
, Tomoya Iwata
, Jude Mathooko
, Charles M’erimba
, Catherine M. Pringle
, Alonso Ramírez
, Christopher M. Swan
, Catherine M. Yule
, Richard G. Pearson
1
LEFE -
Laboratoire Ecologie Fonctionnelle et Environnement
( 24486 )
- 118 Route de Narbonne 31062 Toulouse
- France
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Date de publication |
2017-09-05
|
Volume |
7
|
Numéro |
1
|
Page/Identifiant |
1-10
|
Domaine(s) |
|
Mots-clés |
en
Riparian plant litter, Latitude, Streams, Environmental factors, Phylogeny
|
DOI | 10.1038/s41598-017-10640-3 |
OATAO | 20192 |
Origine :
Fichiers produits par l'(les) auteur(s)
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