2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/21/2019 | 2:15 PM - 2:30 PM | URBAN AND AGRICULTURAL DEVELOPMENT OF RIPARIAN CORRIDORS AIDS SUCCESS OF ROUND GOBY INVASION | 251 AB
URBAN AND AGRICULTURAL DEVELOPMENT OF RIPARIAN CORRIDORS AIDS SUCCESS OF ROUND GOBY INVASION
The rate of introduction for nonnative species in highly urbanized systems is often higher than relatively rural systems. Urban environments also often contain multiple stressors (e.g., contaminants, habitat degradation) that can decrease the capacity for native species to respond to species introductions. We hypothesized that anthropogenic development, particularly in river riparian zones, can affect the probability of successful invasion. To evaluate this we conducted fish surveys, habitat assessments, and land cover analyses over three years for seven rivers in Michigan currently undergoing round goby (Neogobius melanostomus) invasion. Boosted regression trees were used to identify commonalities among the environmental and biotic parameters associated with the density of round goby populations. Watersheds with high proportions of urban and agricultural land use in riparian areas had large goby populations and demonstrated the greatest declines in native competitors. Other drivers of invasion included low native fish diversity, moderate stream size, and high contaminant levels. Results suggest prioritizing conservation of native species and maintenance of habitat quality as components of urban planning is a potential way to increase system resistance to invasion and limit the impact of invasive species.
- Invasives
- Riparian
- Fish
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Presenters/Authors
Corey Krabbenhoft
(), University of Minnesota, krabb012@umn.edu;
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Donna Kashian
(), Wayne State University, dkashian@wayne.edu;
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