Seasonal habitat use indicates that depth may mediate the potential for invasive round goby impacts in inland lakes

The round goby (Neogobius melanostomus) is among the fastest‐spreading introduced aquatic species in North America and is radiating inland from the Great Lakes into freshwater ecosystems across the landscape. Predicting and managing the impacts of round gobies requires information on the factors inf...

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Bibliographic Details
Published in:Freshwater biology 2020-08, Vol.65 (8), p.1337-1347
Main Authors: Andres, Kara J., Sethi, Suresh Andrew, Duskey, Elizabeth, Lepak, Jesse M., Rice, Aaron N., Estabrook, Bobbi J., Fitzpatrick, Kimberly B., George, Ellen, Marcy‐Quay, Benjamin, Paufve, Matthew R., Perkins, Kelly, Scofield, Anne E.
Format: Article
Language:English
Subjects:
Abundance
aquatic invasive species
Biomass
Detection
ecological niche
Ecosystems
Environmental gradient
Environmental risk
Freshwater
Freshwater ecosystems
Freshwater lakes
Habitat selection
Habitat utilization
Habitats
Impact prediction
Inland water environment
Inland waters
Introduced species
invasion front
Invasive fish
Invasive species
Lakes
Marine fishes
Neogobius
Neogobius melanostomus
Niches
Offshore
Seasons
species distribution model
Statistical analysis
Summer
videography
Winter
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Summary:The round goby (Neogobius melanostomus) is among the fastest‐spreading introduced aquatic species in North America and is radiating inland from the Great Lakes into freshwater ecosystems across the landscape. Predicting and managing the impacts of round gobies requires information on the factors influencing their distribution in habitats along the invasion front, yet this information is not available for many recently invaded ecosystems. We evaluated the seasonal habitat use and biomass of round gobies in an inland temperate lake to define the spatiotemporal scope of biological interactions at the leading edge of the round goby invasion. Using novel statistical approaches, we combined hierarchical models that control for imperfect species detection with flexible smooth terms to describe non‐linear relationships between round goby abundance and environmental gradients. Subsequently, we generated accurate detection‐corrected estimates of the standing stock biomass of round gobies. Our results show seasonally differentiated habitat niches, where suitable round goby habitat in summer months is restricted to shallow depths (
ISSN:0046-5070
1365-2427
DOI:10.1111/fwb.13502