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Title: Plant litter dynamics in the forest-stream interface: Precipitation is a major control across tropical biomes
Authors: Tonin, Alan Mosele
Gonçalves, José Francisco Júnior
Bambi, Paulino
Couceiro, Sheyla R.M.
Feitoza, Lorrane A.M.
Fontana, Lucas Eugênio
Hamada, Neusa
Ubiratan Hepp, Luiz
Lezan-Kowalczuk, Vânia G.
Leite, Gustavo Figueiredo Marques
Lemes-Silva, Aurea Luiza
Lisboa, Leonardo Kleba
Loureiro, Rafael Chaves
Martins, Renato Tavares
Medeiros, Adriana Oliveira
Morais, Paula Benevides de
Moretto, Yara
Oliveria, Patrícia C.A.
Pereira, Evelyn B.
Ferreira, Lidiane P.
Pérez, Javier
Petrucio, Maurício Mello Mello
Reis, Deusiano F.
Rezende, Renan S.
Roque, Nádia
Santos, Luiz E.P.
Siegloch, Ana Emília
Tonello, Gabriela
Boyero, Luz
Keywords: Plant Litter
Tropic Climate
Tropical Climate
Issue Date: 2017
metadata.dc.publisher.journal: Scientific Reports
metadata.dc.relation.ispartof: Volume 7, Número 1
Abstract: Riparian plant litter is a major energy source for forested streams across the world and its decomposition has repercussions on nutrient cycling, food webs and ecosystem functioning. However, we know little about plant litter dynamics in tropical streams, even though the tropics occupy 40% of the Earth's land surface. Here we investigated spatial and temporal (along a year cycle) patterns of litter inputs and storage in multiple streams of three tropical biomes in Brazil (Atlantic forest, Amazon forest and Cerrado savanna), predicting major differences among biomes in relation to temperature and precipitation regimes. Precipitation explained most of litter inputs and storage, which were generally higher in more humid biomes (litterfall: 384, 422 and 308 g m-2 y-1, storage: 55, 113 and 38 g m-2, on average in Atlantic forest, Amazon and Cerrado, respectively). Temporal dynamics varied across biomes in relation to precipitation and temperature, with uniform litter inputs but seasonal storage in Atlantic forest streams, seasonal inputs in Amazon and Cerrado streams, and aseasonal storage in Amazon streams. Our findings suggest that litter dynamics vary greatly within the tropics, but point to the major role of precipitation, which contrasts with the main influence of temperature in temperate areas. © 2017 The Author(s).
metadata.dc.identifier.doi: 10.1038/s41598-017-10576-8
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