Sustained use of marine subsidies promotes niche expansion in a wild felid
- Leighton, Gabriella R M, Froneman, P William, Serieys, Laurel E K, Bishop, Jacqueline M
- Authors: Leighton, Gabriella R M , Froneman, P William , Serieys, Laurel E K , Bishop, Jacqueline M
- Date: 2024
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/479374 , vital:78295 , https://doi.org/10.1016/j.scitotenv.2024.169912
- Description: The use of marine subsidies by terrestrial predators can facilitate substantial transfer of nutrients between marine and terrestrial ecosystems. Marine resource subsidies may have profound effects on predator ecology, influencing population and niche dynamics. Expanding niches of top consumers can impact ecosystem resilience and interspecific interactions, affecting predator-prey dynamics and competition. We investigate the occurrence, importance, and impact of marine resources on trophic ecology and niche dynamics in a highly generalist predator, the caracal (Caracal caracal), on the Cape Peninsula, South Africa. Caracals have flexible diets, feeding across a wide range of terrestrial and aquatic prey. We use carbon and nitrogen stable isotope analysis of fur samples (n = 75) to understand trophic position and niche shifts in coastal and inland foragers, as well as the implications of a diet rich in marine resources.
- Full Text:
- Date Issued: 2024
- Authors: Leighton, Gabriella R M , Froneman, P William , Serieys, Laurel E K , Bishop, Jacqueline M
- Date: 2024
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/479374 , vital:78295 , https://doi.org/10.1016/j.scitotenv.2024.169912
- Description: The use of marine subsidies by terrestrial predators can facilitate substantial transfer of nutrients between marine and terrestrial ecosystems. Marine resource subsidies may have profound effects on predator ecology, influencing population and niche dynamics. Expanding niches of top consumers can impact ecosystem resilience and interspecific interactions, affecting predator-prey dynamics and competition. We investigate the occurrence, importance, and impact of marine resources on trophic ecology and niche dynamics in a highly generalist predator, the caracal (Caracal caracal), on the Cape Peninsula, South Africa. Caracals have flexible diets, feeding across a wide range of terrestrial and aquatic prey. We use carbon and nitrogen stable isotope analysis of fur samples (n = 75) to understand trophic position and niche shifts in coastal and inland foragers, as well as the implications of a diet rich in marine resources.
- Full Text:
- Date Issued: 2024
The effect of interspecific and intraspecific diversity on microplastic ingestion in two co-occurring mussel species in South Africa
- Cozzolino, Lorenzo, Nicastro, Katy R, Lefebvre, Sebastien, Corona, Luana, Froneman, P William, McQuaid, Christopher D, Zardi, Gerardo I
- Authors: Cozzolino, Lorenzo , Nicastro, Katy R , Lefebvre, Sebastien , Corona, Luana , Froneman, P William , McQuaid, Christopher D , Zardi, Gerardo I
- Date: 2023
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/479297 , vital:78284 , https://doi.org/10.1016/j.scitotenv.2024.169912
- Description: Interspecific and intraspecific diversity are essential components of biodiversity with far-reaching implications for ecosystem function and service provision. Importantly, genotypic and phenotypic variation within a species can affect responses to anthropogenic pressures more than interspecific diversity. We investigated the effects of interspecific and intraspecific diversity on microplastic ingestion by two coexisting mussel species in South Africa, Mytilus galloprovincialis and Perna perna, the latter occurring as two genetic lineages.
- Full Text:
- Date Issued: 2023
- Authors: Cozzolino, Lorenzo , Nicastro, Katy R , Lefebvre, Sebastien , Corona, Luana , Froneman, P William , McQuaid, Christopher D , Zardi, Gerardo I
- Date: 2023
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/479297 , vital:78284 , https://doi.org/10.1016/j.scitotenv.2024.169912
- Description: Interspecific and intraspecific diversity are essential components of biodiversity with far-reaching implications for ecosystem function and service provision. Importantly, genotypic and phenotypic variation within a species can affect responses to anthropogenic pressures more than interspecific diversity. We investigated the effects of interspecific and intraspecific diversity on microplastic ingestion by two coexisting mussel species in South Africa, Mytilus galloprovincialis and Perna perna, the latter occurring as two genetic lineages.
- Full Text:
- Date Issued: 2023
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