2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/23/2019 | 2:45 PM - 3:00 PM | AN INVESTIGATION OF SPATIAL COMPLEXITY AND DIVERSITY OF TERRESTRIAL INSECTIVORES IN A RIVER-FLOODPLAIN METACOMMUNITY | 151 G
AN INVESTIGATION OF SPATIAL COMPLEXITY AND DIVERSITY OF TERRESTRIAL INSECTIVORES IN A RIVER-FLOODPLAIN METACOMMUNITY
Despite their disproportionate importance to the maintenance of biodiversity, river-floodplains are among the most imperiled ecosystems on the planet. Natural river-floodplain dynamism creates and maintains a complex mosaic of habitats which can sustain a diverse array of animals, both aquatic and terrestrial, with varying life-history traits and habitat requirements. One mechanism by which diversity of terrestrial insectivores may be maintained is through asynchronous patterns of insect emergence that result from patchiness within the landscape. We quantified richness and abundance of insectivorous arthropods, bats, and birds across a mosaic of 7 habitats that varied in physical characteristics (e.g., temperature, flow, and connectivity regime) on a floodplain of the Snake River in southeastern Idaho. Here, we present results from a ‘thought-experiment’ whereby we assessed insectivores in a metacommunity framework by randomly and sequentially aggregating assemblages from distinct habitat patches. As insectivore communities associated with each habitat patch were combined into successively larger and more complex metacommunities, we observed that richness increased to create a more diverse assemblage than was found in any habitat alone. These findings further elucidate the potential consequences of river-floodplain homogenization for biodiversity and species conservation.
- Floodplain
- Food Webs
- Landscape
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Presenters/Authors
Jade Ortiz
(), Idaho State University, ortijade@isu.edu;
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Colden Baxter
(), Idaho State University, baxtcold@isu.edu;
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