A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Europe-Wide Dampening of Population Cycles in Keystone Herbivores
Tekijät: Cornulier T, Yoccoz NG, Bretagnolle V, Brommer JE, Butet A, Ecke F, Elston DA, Framstad E, Henttonen H, Hornfeldt B, Huitu O, Imholt C, Ims RA, Jacob J, Jedrzejewska B, Millon A, Petty SJ, Pietiainen H, Tkadlec E, Zub K, Lambin X
Kustantaja: AMER ASSOC ADVANCEMENT SCIENCE
Julkaisuvuosi: 2013
Journal: Science
Tietokannassa oleva lehden nimi: SCIENCE
Lehden akronyymi: SCIENCE
Numero sarjassa: 6128
Vuosikerta: 340
Numero: 6128
Aloitussivu: 63
Lopetussivu: 66
Sivujen määrä: 4
ISSN: 0036-8075
DOI: https://doi.org/10.1126/science.1228992
Tiivistelmä
Suggestions of collapse in small herbivore cycles since the 1980s have raised concerns about the loss of essential ecosystem functions. Whether such phenomena are general and result from extrinsic environmental changes or from intrinsic process stochasticity is currently unknown. Using a large compilation of time series of vole abundances, we demonstrate consistent cycle amplitude dampening associated with a reduction in winter population growth, although regulatory processes responsible for cyclicity have not been lost. The underlying syndrome of change throughout Europe and grass-eating vole species suggests a common climatic driver. Increasing intervals of low-amplitude small herbivore population fluctuations are expected in the future, and these may have cascading impacts on trophic webs across ecosystems.
Suggestions of collapse in small herbivore cycles since the 1980s have raised concerns about the loss of essential ecosystem functions. Whether such phenomena are general and result from extrinsic environmental changes or from intrinsic process stochasticity is currently unknown. Using a large compilation of time series of vole abundances, we demonstrate consistent cycle amplitude dampening associated with a reduction in winter population growth, although regulatory processes responsible for cyclicity have not been lost. The underlying syndrome of change throughout Europe and grass-eating vole species suggests a common climatic driver. Increasing intervals of low-amplitude small herbivore population fluctuations are expected in the future, and these may have cascading impacts on trophic webs across ecosystems.
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