Publications by authors named "Jonathan Botha"

Article Synopsis
  • The black-faced cormorant, an Australian seabird, has limited research on its foraging habits and habitat use, which is critical due to concerns over ocean warming in its primary range.
  • The study utilized regurgitated food samples and GPS data loggers to analyze the diet and foraging behavior of these birds while raising chicks from 2020 to 2023 on Notch Island.
  • Results showed that most prey was benthic, with males diving deeper than females, leading to different foraging areas; this sexual segregation may impact species management and reproductive success amidst environmental changes.
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Information on resource use and trophic dynamics of marine predators is important for understanding their role in ecosystem functioning and predicting population-level responses to environmental change. Where separate populations experience different local environmental conditions, geographic variability in their foraging ecology is often expected. Within populations, individuals also vary in morphology, physiology, and experience, resulting in specialization in resource use.

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Marine predators adapt their hunting techniques to locate and capture prey in response to their surrounding environment. However, little is known about how certain strategies influence foraging success and efficiency. Due to the miniaturisation of animal tracking technologies, a single individual can be equipped with multiple data loggers to obtain multi-scale tracking information.

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Lignocellulosic biomass is a promising feedstock for the manufacture of biodegradable and renewable bioproducts. However, the complex lignocellulosic polymeric structure of woody tissue is difficult to access without extensive industrial pre-treatment. Enzyme processing of partly depolymerised biomass is an established technology, and there is evidence that high temperature (extremely thermophilic) lignocellulose degrading enzymes [carbohydrate active enzymes (CAZymes)] may enhance processing efficiency.

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