An assessment of small islands coral cover and coral-reef fish diversity at Oba Sub-district, Halmahera Island

Ismail, Firdaut; Akbar, Nebuchadnezzar; Tahir, Irmalita; Paembonan, Rustam E; Marus, Ikbal; Wibowo, Eko S

doi:10.1088/1755-1315/890/1/012060

Cited by 2 publications

(2 citation statements)

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“…The present study found that the number of coral reef fish species in China increased with an increase in coral species, with a significant positive correlation. This is similar to Australia [79], Malaysia [10], Indonesia [80], and Tanzania [81]. Komyakova et al [67] reported that the species diversity of fish from Lizard Island had a strong linear relationship with the diversity of coral species, mainly because a large number of fish, especially juveniles, depend on living corals and choose to settle near them.…”

Section: Relationship Between the Species Of Coral And Coral Reef Fishessupporting

confidence: 65%

Distribution Pattern of Coral Reef Fishes in China

Shi

Wang

et al. 2022

Sustainability

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Coral reefs are known as “tropical rain forests” in the ocean. Fish diversity is extremely high, accounting for one-third of marine fishes. To better protect and manage coral reef fishes, this study systematically compiled documents and databases published in China. We counted 2855 species of coral reef fishes in China, which belong to 3 classes, 41 orders, 252 families, and 1017 genera. Among these, Perciformes was the dominant order, accounting for 57.31% of the total species. Gobiidae (7.43%), Labridae (5.36%), Pomacentridae (4.52%), and Serranidae (4.38%) were the main families, while other families accounted for less than 4%. Furthermore, 5.56% of coral reef fish species have entered the IUCN Red List. The present study found that coral reef fishes can be divided into nearshore and offshore. This was mainly because the nearshore coral reef fishes were more affected by human disturbance and runoff from the mainland, whereas offshore coral reef fishes were in areas with high salinity and temperature far from the mainland, where human disturbance was less. Coral reef fish species’ diversity had a significant positive correlation with coral species diversity (p < 0.05), mainly because corals provide habitat and shelter. This study is the first systematic compilation and analysis of coral reef fishes in China and provides a basic reference for global protection management and biological geographical analysis.

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Section: Relationship Between the Species Of Coral And Coral Reef Fishessupporting

confidence: 65%

Distribution Pattern of Coral Reef Fishes in China

Shi

Wang

et al. 2022

Sustainability

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“…Coastal land conversion, terrestrial pollution from trash, household and industrial waste, as well as runoff from maritime transportation, along with coral extraction for construction material, have been identified as anthropogenic factors that have reduced the extent of live coral cover in the waters of Halmahera [4]. Data shows that environmental pressures suspected of being anthropogenic have led to low live coral cover on small islands in the Oba district, Northern Halmahera, which is only around 14.33-39.13% [5]. On a broader scale, out of 12 coral reef stations in the waters of Halmahera, data IOP Publishing doi:10.1088/1755-1315/1328/1/012006 2 reveals that the average extent of dead coral cover in shallow waters (0.5-2.0 m) exceeds that of live coral cover [6].…”

Section: Introductionmentioning

confidence: 99%

Habitat suitability model of future coral reef region in the Halmahera Waters under the projection of environmental pressures from future climate change and coastal pollution

Hidayah,

Januar,

Humaida

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The coral reef region of the Halmahera waters situated within the tropical area of the coral triangle, covers approximately 193,126 km2, with coral reef habitats occupying roughly 958.47 km2. The coral reefs in Halmahera waters are essential for ecosystem services and local fisheries. However, they are at risk from climate change and coastal pollution. This study aimed to develop habitat suitability models for coral reefs in the Halmahera waters under future climate change scenarios. MaxEnt modeling was employed to project suitability for the coral Acropora spp. using occurrence data. Suitability projections were made for 2050 under IPCC RCP 2.6, 6.0, and 8.5 scenarios, assuming no measures are taken to mitigate coastal water pollution. Environmental factors considered in the modeling included temperature, salinity, current velocity, pH, sunlight penetration, and chlorophyll levels. Results demonstrated a significant decline in habitat suitability, with an 85% loss of highly suitable areas under RCP 2.6 – 8.5 compared to current conditions (741 km2). Chlorophyll levels, a marker of coastal pollution, were predicted to be the most influential factor, followed by temperature and salinity. The findings highlight the need to reduce global carbon emissions and implement conservation measures to mitigate coastal water pollution in preserving coral reef habitats.

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An assessment of small islands coral cover and coral-reef fish diversity at Oba Sub-district, Halmahera Island

Cited by 2 publications

References 0 publications

Distribution Pattern of Coral Reef Fishes in China

Distribution Pattern of Coral Reef Fishes in China

Habitat suitability model of future coral reef region in the Halmahera Waters under the projection of environmental pressures from future climate change and coastal pollution

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