We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Species Interactions and Community Structure in Alaskan Seabird Colonies.
- Authors
Whittam, Thomas S.; Siegel-Causey, Douglas
- Abstract
Previous studies of colonial seabirds suggest that similarities among geographically distinct seabird communities, in terms of ecologically matched species, are strong evidence for structure in these bird assemblages. We quantify species associations and community structure within five nesting guilds of Alaskan seabirds using multiway contingency tables and log-linear models. The observed species combinations differ in frequency from those expected using an independent assortment model. Simple models that adequately describe the data structure contain mostly positive two-way interactions between species. Higher order interactions, although uncommon, may suggest a type of diffuse competition. A ranked measure of resource overlap is uncorrelated with the magnitude of species interactions within guilds, but is positively correlated with deviations from independence among all species pairs.
- Subjects
COLONIAL birds; GEOGRAPHICAL distribution of birds; LOG-linear models; CONTINGENCY tables; COMPETITION (Biology); FORAGING behavior
- Publication
Ecology, 1981, Vol 62, Issue 6, p1515
- ISSN
0012-9658
- Publication type
Academic Journal
- DOI
10.2307/1941508