EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/25/2021 | 2:00 PM - 3:30 PM | LEGACY EFFECTS OF HISTORICAL RICHNESS CAUSE CHANGE IN FISH COMMUNITY ASSEMBLY OVER TIME | Virtual Platform
LEGACY EFFECTS OF HISTORICAL RICHNESS CAUSE CHANGE IN FISH COMMUNITY ASSEMBLY OVER TIME
Understanding how communities assemble is a fundamental ecological question. Environmental filtering, where species occurrence is determined by abiotic habitat conditions, and limiting similarity, where species occurrence is determined by biotic interactions, have been identified as the main ways in which communities are assembled. To better understand how community assembly is impacted by global climate change, it is important to assess these processes through time. We investigate changes in assembly mechanisms of fish communities across Oklahoma, which has a striking precipitation gradient, using repeated fish surveys from 1969 to 2014. We compared temporal trends in taxonomic, functional, and phylogenetic diversity. Our results showed that limiting similarity was more important for assemblages with low historical richness, while environmental filtering was more important for sites with high historical richness. In addition, we found that while functional richness showed a shift from limiting similarity to environmental filtering, phylogenetic diversity showed the opposite. This suggests complementary dynamics between phylogenetic and functional richness. Our findings demonstrated the importance of examining assembly rules through time to better understand long-term community dynamics under global change.
- Conservation
- Global change
- Management
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Presenters/Authors
Michelle Busch
(), University of Oklahoma, buschmh@ou.edu;
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Daniel Allen
(), University of Oklahoma, dcallen@ou.edu;
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Katharine Marske
(), University of Oklahoma, kamarske@ou.edu;
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Lucie Kuczynski
(), University of Oldenberg, lucie.kuczynski@hotmail.com;
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