Document Detail

Unravelling stability-complexity relationships.
MedLine Citation:
PMID:  22489898     Owner:  NLM     Status:  In-Data-Review    
[Formula: see text] [ The consumer Ceriodaphnia reticulata. This experiment used a very similar species to the one shown here, namely Ceriodaphnia reticulata. This freshwater cladoceran grazer can consume phytoplankton species that have a maximal axial dimension of upto ∼35 μm. As a result, Pediastrum simplex (CPCC 431), Fragilaria crotonensis (CPCC 269), Asterionella formosa (CPCC 605), and Staurastrum pingue (UTEX1606) would have inedible for Ceriodaphnia dubia. Ankistrodesmus falcatus (UTEX 101) may also have been selected against in some instances due to its large size. Neither C. dubia density nor stability were affected by resource species diversity, although resource community composition did matter. ] Narwani, A. & Mazumder, A. (2012) Bottom-up effects of species diversity on the functioning and stability of food webs. Journal of Animal Ecology, 81, 702-714. Defining the characteristics of persistent species assemblages is a major focus in ecology. A key set of questions is: how to scale up from interactions between two species to multiple species, what is the role of species characteristics in coexistence and what are the ecosystem level consequences of the characteristics of coexistence. Narwani & Mazumder use meticulous experimental work to look at these three questions simultaneously using carefully controlled microcosms. A key finding is that the relationships between stability and diversity as measured by effects on different trophic levels and different aspects of ecosystem function depend critically on the community composition. The particular species involved are more important than the overall diversity.
Alan Hastings
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of animal ecology     Volume:  81     ISSN:  1365-2656     ISO Abbreviation:  J Anim Ecol     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-04-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376574     Medline TA:  J Anim Ecol     Country:  England    
Other Details:
Languages:  eng     Pagination:  513-5     Citation Subset:  IM    
Copyright Information:
© 2012 The Author. Journal of Animal Ecology © 2012 British Ecological Society.
Department of Environmental Science and Policy, University of California, One Shields Avenue, Davis, CA 95616, USA.
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