Artículo
Has water limited our imagination for aridland biogeochemistry?
Fecha de publicación:
05/2011
Editorial:
Elsevier Science London
Revista:
Trends In Ecology And Evolution - Tree
ISSN:
0169-5347
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The classic ecological paradigm for deserts, that all processes are controlled by water availability, has limited our imagination for exploring other controls on the cycling of carbon and nutrients in aridland ecosystems. This review of recent studies identifies alternative mechanisms that challenge the idea that all soil processes in aridlands are proximately water-limited, and highlights the significance of photodegradation of aboveground litter and the overriding importance of spatial heterogeneity as a modulator of biotic responses to water availability. Aridlands currently occupy >30% of the terrestrial land surface and are expanding. It is therefore critical to incorporate these previously unappreciated mechanisms in our understanding of aridland biogeochemistry to mitigate the effects of desertification and global change.
Palabras clave:
ARID AND SEMIARID ECOSYSTEMS
,
CARBON CYCLING
,
PHOTODEGRADATION
,
REVIEW
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Identificadores
Colecciones
Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Citación
Austin, Amy Theresa; Has water limited our imagination for aridland biogeochemistry?; Elsevier Science London; Trends In Ecology And Evolution - Tree; 26; 5; 5-2011; 229-235
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