2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/23/2019 | 2:15 PM - 2:30 PM | SPECIES PAIRS ASSOCIATIONS, NULL MODLES, AND TESTS OF MECHANISMS STRUCTURING ECOLOGICAL COMMUNITIES | 151 G
SPECIES PAIRS ASSOCIATIONS, NULL MODLES, AND TESTS OF MECHANISMS STRUCTURING ECOLOGICAL COMMUNITIES
Diamond’s assembly rules sparked a series of studies that have either challenged or corroborated his ideas about how natural communities are structured. However, most of these studies have focused on the role of competition and whether the entire species community is non-randomly structured. An alternative way to determine the community structure is to understand the patterns observed in the association of each pair of species. We examined hypotheses of whether there are significant non-random relationships in species pairs of fishes and whether these relationships are consistent across different watersheds. Using incidence matrices, we show many pairs of species exhibit non-random relationships in their patterns of co-occurrence. Although some species pairs do not co-occur in some watersheds due to biogeographic differences, many of these significant relationships are consistent across watersheds as shown in our meta-analysis. Our work both extends methodological approaches to testing the assembly of ecological communities, but also demonstrates that these temperate lake fish communities show strong evidence of repeatable, non-random composition.
- Lentic
- Spatial
- Biodiversity
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Presenters/Authors
Ruben Coredero
(), University of Toronto, r.corderoalarcon@mail.utoronto.ca;
ASHA DISCLOSURE:
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Nonfinancial -
Donald Jackson
(), University of Toronto, don.jackson@utoronto.ca;
ASHA DISCLOSURE:
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