The inflationary effects of environmental fluctuations in source–sink systems
AUTOR(ES)
Gonzalez, Andrew
FONTE
National Academy of Sciences
RESUMO
Ecological communities are open to the immigration of individuals and are variable through time. In open habitats immigration may permit populations of a species to persist locally even though local biotic and abiotic processes tend to exclude such “sink” populations. A general model for a sink population reveals that autocorrelated environmental variation can dramatically inflate local abundance and that such populations display a characteristic “outbreak” pattern. An experimental protist microcosm exhibits these predicted effects. Because the many ecological and environmental processes that set the rate of exclusion are typically autocorrelated, these theoretical and empirical results have broad implications for our understanding of community structure and highlight a previously unsuspected potential effect of anthropogenic climate change.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=137511Documentos Relacionados
- Alterations in Source-Sink Patterns by Modifications of Source Strength 1
- Rapid Changes in Translocation Patterns in Soybeans following Source-Sink Alterations 12
- Measurement of community metabolism and significance in the coral reef CO2 source-sink debate
- Source-sink relationship of soybean accessed by increasing in solar radiation through the plant canopy
- Source-sink relationships in two soybean cultivars with indeterminate growth under water deficit
