Preliminary observations on the movement ecology of a crested horn shark (Heterodontus galeatus)

Article Ecology

A coherent, representative, and bioregional marine reserve network shows consistent change in rocky reef fish assemblages

N. A. Knott et al.

Summary: This study examined the ecological responses to marine reserve networks in three Australian bioregions, showing significant benefits for the commercially and recreationally harvested species while less pronounced effects were observed for other targeted fish species. Non-target or by-catch species generally did not show differences in abundance across different management zones within the bioregional network. These results demonstrate the potential of marine reserves in assessing the ecological effects of fishing and broader environmental management, supporting ecosystem-based management for reef species.

ECOSPHERE (2021)

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Article Fisheries

Residency and movement patterns of adult Port Jackson sharks (Heterodontus portusjacksoni) at a breeding aggregation site

Nathan Charles Bass et al.

Summary: Studying the residency and movement patterns of Port Jackson sharks in southeastern Australia revealed that males prefer specific reefs while females are more mobile, potentially moving between sites to assess males. Additionally, Port Jackson sharks typically visit more reefs at night, aligning with their nocturnal habits.

JOURNAL OF FISH BIOLOGY (2021)

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Article Fisheries

Intraspecific variation in diel patterns of rocky reef use suggests temporal partitioning in Port Jackson sharks

Nathan Charles Bass et al.

Summary: Limited information exists about the temporal residency patterns of marine predators, especially at the individual level. Temporal partitioning of resources can reduce intra-specific competition, but this has seldom been examined in predators in marine ecosystems. The study found that male and female Port Jackson sharks exhibited different residency patterns during their breeding season and showed a 24-h diel periodicity in their detection patterns. While most individuals were nocturnal, a small proportion of sharks were more frequently detected during the day, possibly to reduce competition for resources.

MARINE AND FRESHWATER RESEARCH (2021)

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Article Ecology