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Article
Open AccessInvasive crayfish impacts on native fish diet and growth vary with fish life stage
Assessing the impacts of invasive organisms is a major challenge in ecology. Some widespread invasive species such as crayfish are potential competitors and reciprocal predators of ecologically and recreationa...
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Article
Angling baits and invasive crayfish as important trophic subsidies for a large cyprinid fish
Invasive species and anthropogenic sources of allochthonous trophic subsidies can have substantial ecological consequences for freshwater ecosystems, including modifying the diet of consumers and altering foo...
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Article
Accelerating rates of freshwater invasions in the catchment of the River Thames
We identify a total of 96 freshwater non-indigenous species established in the River Thames catchment, England; of which 55 % were introduced intentionally. Our analysis shows that 53 % of the species became e...
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Article
High site fidelity and low site connectivity in temperate salt marsh fish populations: a stable isotope approach
Adult and juvenile fish utilise salt marshes for food and shelter at high tide, moving into adjacent sublittoral regions during low tide. Understanding whether there are high levels of site fidelity for differ...
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Article
Temporal variation in zebra mussel (Dreissena polymorpha) density structure the benthic food web and community composition on hard substrates in Lake Constance, Germany
Invasive species often influence existing biocenoses by altering their environment or facilitating the ecology of other species. Here we combined stable isotope analysis with quantitative benthic community sam...
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Article
The introduced Micropterus salmoides in an equatorial lake: a paradoxical loser in an invasion meltdown scenario?
Micropterus salmoides is a North American piscivorous fish on the IUCN list of 100 of the world’s worst invasive alien species. Introduced into Lake Naivasha (Kenya) in 1929, their current population abundance is...
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Article
Gardening by the psychomyiid caddisfly Tinodes waeneri: evidence from stable isotopes
Sedentary species face a trade-off between the benefits of exploiting food close to their homes and the cost of defending it. In aquatic systems, it has been suggested that some sedentary grazers can increase ...
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Article
Open AccessFossil chironomid δ13C as a proxy for past methanogenic contribution to benthic food webs in lakes?
We used a series of experiments to determine whether stable carbon isotope analysis of modern and fossil larval head capsules of chironomids allowed identification of their dietary carbon source. Our main focu...
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Article
Open AccessTrade-off between morphological convergence and opportunistic diet behavior in fish hybrid zone
The invasive Chondrostoma nasus nasus has colonized part of the distribution area of the protected endemic species Chondrostoma toxostoma toxostoma. This hybrid zone is a complex system where multiple effects suc...
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Article
Stable isotope analyses provide new insights into ecological plasticity in a mixohaline population of European eel
Recent studies have shown that anguillid eel populations in habitats spanning the marine–freshwater ecotone can display extreme plasticity in the range of catadromy expressed by individual fishes. Carbon and n...
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Article
The Utility of Carbon and Nitrogen Isotope Analyses to Trace Contributions from Fish Farms to the Receiving Communities of Freshwater Lakes: a Pilot Study in Esthwaite Water, UK
A pilot study was conducted to assess the potential for stable isotope analyses to reveal the fate of waste pelleted food material from fish farms in freshwater food webs. Esthwaite Water (Cumbria, UK) was sel...
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Article
Exploitation of a deep-water algal maximum by Daphnia: a stable-isotope tracer study
The exploitation of a deep algal maximum by Daphnia in the absence of fish predation was studied in large indoor mesocosms. Facing the dilemma of low food but high temperature in the epilimnion vs. high food but ...
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Chapter
Exploitation of a deep-water algal maximum by Daphnia: a stable-isotope tracer study
The exploitation of a deep algal maximum by Daphnia in the absence of fish predation was studied in large indoor mesocosms. Facing the dilemma of low food but high temperature in the epilimnion vs. high food but ...
