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Biodiversity responses to environmental variation - Coggle Diagram
Biodiversity responses to environmental
variation
Red grouse-parasite ecology: The weather
Winter adult mortality, failure to reproduce, egg mortality, chick mortality increase
with parasite burden
Abiotic effects interact with biotic effects
synchrony
Synchronized behaviors or processes across multiple species within an ecosystem
‘The Moran Effect’
Patrick Moran (1953) analysed Canadian lynx cycles
Local variation in weather coupled with atmospheric change at planetary
scale
North Atlantic Oscillation (NAO) - westerly winds across Atlantic
effects food web in Barents Sea
Mismatch occurs when environmental fluctuations affect timing of resource
availability for consumer
The match-mismatch hypothesis
in terrestrial ecosystems
Phenological asynchrony
Effect of seasonal variations in climate on plant and animal life
cycles
(Walther, G-R (2002) Nature 416, 389-395
What are resource pulses?
(Ostfeld, RS (2000) Trends in Ecology and Evolution 15, 232-237)
Temporary super-production of resources.
• Variable temporal and spatial fluctuations in pulses.
• Pulses may be multi-annual and irregula
