Coral disease at Mansuar Island, Raja Ampat, Indonesia

Subhan, Beginer; Arafat, Dondy; Rahmawati, Fadhilah; Dasmasela, YH; Royhan, Q M; Madduppa, Hawis; Santoso, Panca Jarot; Prabowo, B

doi:10.1088/1755-1315/429/1/012027

Cited by 14 publications

(12 citation statements)

References 13 publications

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“…Coral reefs are a component of marine ecosystems that have high diversity and productivity [1]. Good and correct coral reef management must know the health condition of coral reefs and the condition of natural resources that can be utilized [2].…”

Section: Introductionmentioning

confidence: 99%

The coral reef health at surrounding blue swimming crab fishery sites in Mandangin Island, East Java, Indonesia

Ardiansah

Hidayat

Mutmainah

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Blue swimming crab fishery activities very often do not put into account the environmental condition. Coral reef, as one of the blue swimming crab habitats, can be affected by these activities. This study aims to determine the effect of blue swimming crab fisheries on coral health in Mandangin Island, East Java, Indonesia. Data collection points are determined based on the results of interviews by participatory mapping. Water quality data includes visibility, temperature, salinity, pH, DO, current velocity. Collecting coral reef data were using Line Intercept Transect (LIT), while for reef fish Underwater Visual Census (UVC) were used. The coral health index was determined based on the relevance between benthic components and fish components. The average of Mandangin Island’s water quality is in accordance with the quality standards of the Indonesian Minister of Environment Decree No.51 of 2004. Hard coral cover and fish biomass are classified as low, but the value of resilience is high. The coral reef health index value on Mandangin Island is 3.

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Section: Introductionmentioning

confidence: 99%

The coral reef health at surrounding blue swimming crab fishery sites in Mandangin Island, East Java, Indonesia

Ardiansah

Hidayat

Mutmainah

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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“…The number of tourists to the Raja Ampat islands continues to rise, which may negatively impact the coastal ecosystem ( King, 2017 ; Papilaya, Boli & Nikijuluw, 2019 ; Maas et al, 2020 ; Purwanto et al, 2021 ). Coral bleaching and disease have also been observed because of environmental stresses such as seawater temperature fluctuation, decreasing salinity, high sedimentation, and turbidity ( Ampou et al, 2020 ; Johan et al, 2020 ; Subhan et al, 2020 ). Identifying the drivers of benthic community diversity in marine habitats is crucial for gaining deeper insights into how the benthic communities may shift.…”

Section: Introductionmentioning

confidence: 99%

Shifts in dominance of benthic communities along a gradient of water temperature and turbidity in tropical coastal ecosystems

Aji,

Maas,

Capriati

et al. 2024

PeerJ

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Tropical coastal benthic communities will change in species composition and relative dominance due to global (e.g., increasing water temperature) and local (e.g., increasing terrestrial influence due to land-based activity) stressors. This study aimed to gain insight into possible trajectories of coastal benthic assemblages in Raja Ampat, Indonesia, by studying coral reefs at varying distances from human activities and marine lakes with high turbidity in three temperature categories (<31 °C, 31–32 °C, and >32 °C). The benthic community diversity and relative coverage of major benthic groups were quantified via replicate photo transects. The composition of benthic assemblages varied significantly among the reef and marine lake habitats. The marine lakes <31 °C contained hard coral, crustose coralline algae (CCA), and turf algae with coverages similar to those found in the coral reefs (17.4–18.8% hard coral, 3.5–26.3% CCA, and 15–15.5% turf algae, respectively), while the higher temperature marine lakes (31–32 °C and >32 °C) did not harbor hard coral or CCA. Benthic composition in the reefs was significantly influenced by geographic distance among sites but not by human activity or depth. Benthic composition in the marine lakes appeared to be structured by temperature, salinity, and degree of connection to the adjacent sea. Our results suggest that beyond a certain temperature (>31 °C), benthic communities shift away from coral dominance, but new outcomes of assemblages can be highly distinct, with a possible varied dominance of macroalgae, benthic cyanobacterial mats, or filter feeders such as bivalves and tubeworms. This study illustrates the possible use of marine lake model systems to gain insight into shifts in the benthic community structure of tropical coastal ecosystems if hard corals are no longer dominant.

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“…Two major drivers of these declines are heat-induced bleaching—loss of endosymbiotic algae (Brown, 1997)—and disease (Harvell et al, 2007). Although isolated heat-induced bleaching (Johnston et al, 2019; McClanahan et al, 2007; Winter et al, 1998) and disease are common (Richardson et al, 1998; Subhan et al, 2020), these events have also been frequently observed in close spatial and temporal associations (Brandt & McManus, 2009; Burke et al, 2023; Harvell et al, 2001; Howells et al, 2020). In many cases, coral disease follows bleaching (Croquer & Weil, 2009), with extensive disease-related mortality often reported in the weeks to months after heat stress (Jones et al, 2021; Miller et al, 2009; Miller et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Prior heat stress increases pathogen susceptibility in the model cnidarianExaptasia diaphana

Diaz de Villegas,

Borbee,

Abdelbaki

et al. 2023

Preprint

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Anthropogenic climate change has significantly altered terrestrial and marine ecosystems globally, often in the form of climate-related events such as thermal anomalies and disease outbreaks. Although the isolated effects of these stressors have been well documented, a growing body of literature suggests that stressors often interact, resulting in complex effects on ecosystems. Recent declines in coral cover from a variety of climate-related stressors make reef ecosystems well-suited to investigate sequential associations between climate impacts, particularly heat stress and disease. Here we used the model cnidarian Exaiptasia diaphana to investigate mechanisms linking heat stress to increased disease susceptibility. We examined anemone pathogen susceptibility and physiology (symbiosis, immunity, and energetics) following recovery from heat stress. We observed significantly increased pathogen susceptibility in anemones exposed to heat stress, likely linked to observed suppression of multiple immunological parameters. Furthermore, our data suggest that changes in resource allocation might drive observed reductions in immunity following thermal stress. These findings are an important first step towards understanding temporal associations between two of the most significant climate-associated stressors, heat and disease.

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Coral disease at Mansuar Island, Raja Ampat, Indonesia

Cited by 14 publications

References 13 publications

The coral reef health at surrounding blue swimming crab fishery sites in Mandangin Island, East Java, Indonesia

The coral reef health at surrounding blue swimming crab fishery sites in Mandangin Island, East Java, Indonesia

Shifts in dominance of benthic communities along a gradient of water temperature and turbidity in tropical coastal ecosystems

Prior heat stress increases pathogen susceptibility in the model cnidarianExaptasia diaphana

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