Changes in fish assemblages after marine heatwave events in West Hawai‘i Island
نویسندگان
چکیده
Marine heatwaves are prolonged events of anomalously warm water that affect diverse marine habitats and their associated biota. Evidence shows anthropogenic climate change is increasing the frequency duration coral reef systems sensitive to thermal stress imposed by these heatwaves. In this study, we examined fish community response consecutive (2014-2015) analyzing changes in assemblages Hawai‘i over 11 yr (2009-2019). Subtidal video survey data were collected 3 areas on west side Big Island Hawai‘i. Fish counted identified species or genus, then assigned one 7 functional groups: predators, secondary consumers, planktivores, corallivores, scrapers, grazers browsers. Our study revealed 4 key findings. We show all changed significantly each area after Across areas, most abundant groups (planktivores, consumers) drove observed community. Following heatwaves, abundance increased 2 with fewer fishing regulations. protected area, remained high diversity indices higher post-marine results support hypothesis can cause shifts precise nature vary relatively short spatial scales may coincide management.
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2022
ISSN: ['1616-1599', '0171-8630']
DOI: https://doi.org/10.3354/meps14156