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Title: Extreme climatic events shape arid and semiarid ecosystems
Author: Holmgren, Milena
Stapp, Paul
Dickman, Chris R.
Gracia, Carles
Graham, Sonia
Gutiérrez, Julio R.
Hice, Christine
Jaksic, Fabián
Kelt, Douglas A.
Letnic, Mike
Lima, Mauricio
Claramunt López, Bernat
Meserve, Peter L.
Milstead, Bryan W.
Polis, Gary A.
Previtali, M. Andrea
Richter, Michael
Sabaté i Jorba, Santi
Squeo, Francisco A.
Keywords: Canvis climàtics
Climatic changes
Biotic communities
Issue Date: 1-Mar-2006
Publisher: Ecological Society of America
Abstract: Climatic changes associated with the El Niño Southern Oscillation (ENSO) can have a dramatic impact on terrestrial ecosystems worldwide, but especially on arid and semiarid systems, where productivity is strongly limited by precipitation. Nearly two decades of research, including both short‐term experiments and long‐term studies conducted on three continents, reveal that the initial, extraordinary increases in primary productivity percolate up through entire food webs, attenuating the relative importance of top‐down control by predators, providing key resources that are stored to fuel future production, and altering disturbance regimes for months or years after ENSO conditions have passed. Moreover, the ecological changes associated with ENSO events have important implications for agroecosystems, ecosystem restoration, wildlife conservation, and the spread of disease. Here we present the main ideas and results of a recent symposium on the effects of ENSO in dry ecosystems, which was convened as part of the First Alexander von Humboldt International Conference on the El Niño Phenomenon and its Global Impact (Guayaquil, Ecuador, 16-20 May 2005).
Note: Reproducció del document publicat a:[0087:ECESAA]2.0.CO;2
It is part of: Frontiers in Ecology and the Environment, 2006, vol. 4, num. 2, p. 87-95
Related resource:[0087:ECESAA]2.0.CO;2
ISSN: 1540-9295
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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