Fish carcass deposition to suppress invasive lake trout through hypoxia causes limited, non‐target effects on benthic invertebrates in Yellowstone Lake
نویسندگان
چکیده
Invasive species can have negative effects on native biodiversity and ecosystem function, suppression is often required to minimize the effects. However, management actions suppress invasive may cause negative, unintended non-target taxa. Across United States, lake trout (Salvelinus namaycush) are in many freshwater ecosystems, reducing fish abundance diversity through predation competition. In an integrated pest approach, embryos Yellowstone Lake, Wyoming, suppressed by depositing carcasses onto spawning sites; reduce dissolved oxygen concentrations as they decay, causing embryo mortality. We conducted a field experiment during one ice-free season at four sites Lake investigate of carcass treatment benthic invertebrates, which could consequences for diets. While overall invertebrate density biomass did not respond treatment, Chironomidae midges Sphaeriidae fingernail clams decreased abundance. Carcass altered community structure based density, but biomass. has spatially localized, some Given small spatial extent within lake, we conclude it unlikely that will alter food availability fishes.
منابع مشابه
Introduced Lake Trout Produced a Four-Level Trophic Cascade in Yellowstone Lake
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ژورنال
عنوان ژورنال: Aquaculture, fish and fisheries
سال: 2022
ISSN: ['2693-8847']
DOI: https://doi.org/10.1002/aff2.72