2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/05/2017 | 11:45 AM - 12:00 PM | EXPERIMENTAL APPROACH TO UNDERSTANDING RESPONSES OF SPECIES TRAITS TO METAL CONTAMINATION AND SEDIMENT DEPOSITION AT DIFFERENT SPATIAL SCALES | 305B
EXPERIMENTAL APPROACH TO UNDERSTANDING RESPONSES OF SPECIES TRAITS TO METAL CONTAMINATION AND SEDIMENT DEPOSITION AT DIFFERENT SPATIAL SCALES
The analysis of how biological traits respond to contaminants and other anthropogenic stressors may allow for comparisons of sites with different taxonomic composition and provide insight into the underlying mechanisms that explain species occurrence. We used species traits to analyze trends in benthic invertebrate colonization over time to both a single stressor (metal-contaminated sediment) and multiple stressors (metal-contaminated and fine sediment) in Colorado, USA, and Gunma, Japan. We observed a greater effect of fine-sediment deposition compared to responses based on taxonomic composition. Traits related to mobility, life history, and ecological niche were better for distinguishing the effects of fine-sediment quality. Dominant taxa also appeared less effective when observing responses to multiple stressors; however, this was not the case when comparing responses to a single stressor. In contrast, traits did not show significant responses to a single stressor across all sites, which supports the hypothesis that availability of refugia and fine-sediment quality are most important for avoiding contaminants. This study demonstrates that community trait based assessments at varying spatial scales are necessary if we are to move forward in developing a universal traits-based approach to improve management strategies in impaired environments.
- S30 The future of trait-based approaches in research and management
- C11 Community Ecology
- S03 Stressing the 'Eco' in Freshwater Ecotoxicology
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Presenters/Authors
Brittanie Dabney
(), Colorado State University, brittaniedabney@gmail.com;
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William Clements
(), Colorado State University, William.Clements@colostate.edu ;
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Yuichi Iwasaki
(), Toyo University, iwasaki086@toyo.jp;
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Shosaku Kashiwada
(), Toyo University, kashiwada@toyo.jp;
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