NDLI: The phylogenetic component of food web structure and intervality

Content Provider	Springer Nature Link
Author	Eklöf, Anna Stouffer, Daniel B.
Copyright Year	2015
Abstract	Despite the exceptional complexity formed by species and their interactions in ecological networks, such as food webs, regularities in the network structures are repeatedly demonstrated. The interactions are determined by the characteristics of a species. The characteristics are in turn determined by the species’ phylogenetic relationships, but also by factors not related to evolutionary history. Here, we test whether species’ phylogenetic relationships provides a significant proxy for food web intervality. We thereafter quantify the degree to which different species traits remain valuable predictors of food web structure after the baseline effect of species’ relatedness has been removed. We find that the phylogenetic relationships provide a significant background from which to estimate food web intervality and thereby structure. However, we also find that there is an important, non-negligible part of some traits, e.g., body size, in food webs that is not accounted for by the phylogenetic relationships. Additionally, both these relationships differ depending if a predator or a prey perspective is adopted. Clearly, species’ evolutionary history as well as traits not determined by phylogenetic relationships shapes predator-prey interactions in food webs, and the underlying evolutionary processes take place on slightly different time scales depending on the direction of predator-prey adaptations.
Starting Page	107
Ending Page	115
Page Count	9
File Format	PDF
ISSN	18741738
Journal	Theoretical Ecology
Volume Number	9
Issue Number	1
e-ISSN	18741746
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-08-04
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecological networks Food web Intervality Phylogenetic correction Taxonomy Traits Theoretical Ecology/Statistics Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecological Modeling

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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