HattenschwilerCoqBarantalEtAl2011

Reference

Hattenschwiler, S., Coq, S., Barantal, S., Handa, I.T. (2011) Leaf traits and decomposition in tropical rainforests: Revisiting some commonly held views and towards a new hypothesis. New Phytologist, 189(4):950-965. (Scopus )

Abstract

Proper estimates of decomposition are essential for tropical forests, given their key role in the global carbon (C) cycle. However, the current paradigm for litter decomposition is insufficient to account for recent observations and may limit model predictions for highly diverse tropical ecosystems. In light of recent findings from a nutrient-poor Amazonian rainforest, we revisit the commonly held views that: litter traits are a mere legacy of live leaf traits; nitrogen (N) and lignin are the key litter traits controlling decomposition; and favourable climatic conditions result in rapid decomposition in tropical forests. Substantial interspecific variation in litter phosphorus (P) was found to be unrelated to variation in green leaves. Litter nutrients explained no variation in decomposition, which instead was controlled primarily by nonlignin litter C compounds at low concentrations with important soil fauna effects. Despite near-optimal climatic conditions, tropical litter decomposition proceeded more slowly than in a climatically less favourable temperate forest. We suggest that slow decomposition in the studied rainforest results from a syndrome of poor litter C quality beyond a simple lignin control, enforcing energy starvation of decomposers. We hypothesize that the litter trait syndrome in nutrient-poor tropical rainforests may have evolved to increase plant access to limiting nutrients via mycorrhizal associations. © The Authors (2010). Journal compilation © New Phytologist Trust (2010).

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@ARTICLE { HattenschwilerCoqBarantalEtAl2011,
    AUTHOR = { Hattenschwiler, S. and Coq, S. and Barantal, S. and Handa, I.T. },
    TITLE = { Leaf traits and decomposition in tropical rainforests: Revisiting some commonly held views and towards a new hypothesis },
    JOURNAL = { New Phytologist },
    YEAR = { 2011 },
    VOLUME = { 189 },
    PAGES = { 950-965 },
    NUMBER = { 4 },
    NOTE = { cited By (since 1996) 4 },
    ABSTRACT = { Proper estimates of decomposition are essential for tropical forests, given their key role in the global carbon (C) cycle. However, the current paradigm for litter decomposition is insufficient to account for recent observations and may limit model predictions for highly diverse tropical ecosystems. In light of recent findings from a nutrient-poor Amazonian rainforest, we revisit the commonly held views that: litter traits are a mere legacy of live leaf traits; nitrogen (N) and lignin are the key litter traits controlling decomposition; and favourable climatic conditions result in rapid decomposition in tropical forests. Substantial interspecific variation in litter phosphorus (P) was found to be unrelated to variation in green leaves. Litter nutrients explained no variation in decomposition, which instead was controlled primarily by nonlignin litter C compounds at low concentrations with important soil fauna effects. Despite near-optimal climatic conditions, tropical litter decomposition proceeded more slowly than in a climatically less favourable temperate forest. We suggest that slow decomposition in the studied rainforest results from a syndrome of poor litter C quality beyond a simple lignin control, enforcing energy starvation of decomposers. We hypothesize that the litter trait syndrome in nutrient-poor tropical rainforests may have evolved to increase plant access to limiting nutrients via mycorrhizal associations. © The Authors (2010). Journal compilation © New Phytologist Trust (2010). },
    AUTHOR_KEYWORDS = { Energy starvation; French Guiana; Litter quality; Mycorrhizas; Nutrient cycling; Nutrient limitation; Phosphorus; Soil fauna },
    CODEN = { NEPHA },
    DOCUMENT_TYPE = { Review },
    DOI = { 10.1111/j.1469-8137.2010.03483.x },
    ISSN = { 0028646X },
    KEYWORDS = { carbon cycle; decomposition; global change; hypothesis testing; leaf litter; lignin; mycorrhiza; nutrient limitation; phosphorus; rainforest; soil fauna; starvation; tropical forest, animal; biological model; microbiology; mycorrhiza; physiology; plant leaf; quantitative trait; review; tree; tropic climate, Animals; Models, Biological; Mycorrhizae; Plant Leaves; Quantitative Trait, Heritable; Trees; Tropical Climate, Amazonia; French Guiana },
    OWNER = { Luc },
    SOURCE = { Scopus },
    TIMESTAMP = { 2012.05.14 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-79551548909&partnerID=40&md5=4c0ca138d730843cae8a2e277f0f458d },
}

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