Marine litter distribution in Ampana Beach Tojo Una-Una Regency Central Sulawesi Province

Sulistiawati, Dwi; Mansyur, Kasim; Putra, Aswad Eka; Safir, Muhammad; Tahya, Akbar Marzuki; Ya'la, Zakirah Raihani

doi:10.1088/1755-1315/441/1/012128

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…Despite having high susceptibility to future thermal stress, low variability thermal refugia in South Sumatra and intermediate reefs in Sulawesi (Fig 5) may act as very short-term thermal refuges. Less exposed reefs in Central Sulawesi occur where river input influences local SST [55,56]. Reefs in these thermal refugia are in poor health [57].…”

Section: Plos Climatementioning

confidence: 99%

“…Reefs in these thermal refugia are in poor health [57]. River input and nearby coastal developments result in high levels of marine pollution and sedimentation [55,56], alongside overfishing and destructive fishing practices [57]. Management of anthropogenic pressures in low variability, less exposed reefs may however allow these areas to reseed in the short term and facilitate the recovery of the thermally exposed surrounding areas [2].…”

Section: Plos Climatementioning

confidence: 99%

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Future loss of local-scale thermal refugia in coral reef ecosystems

et al. 2022

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Thermal refugia underpin climate-smart management of coral reefs, but whether current thermal refugia will remain so under future warming is uncertain. We use statistical downscaling to provide the highest resolution thermal stress projections (0.01°/1 km, >230,000 reef pixels) currently available for coral reefs and identify future refugia on locally manageable scales. Here, we show that climate change will overwhelm current local-scale refugia, with declines in global thermal refugia from 84% of global coral reef pixels in the present-day climate to 0.2% at 1.5°C, and 0% at 2.0°C of global warming. Local-scale oceanographic features such as upwelling and strong ocean currents only rarely provide future thermal refugia. We confirm that warming of 1.5°C relative to pre-industrial levels will be catastrophic for coral reefs. Focusing management efforts on thermal refugia may only be effective in the short-term. Promoting adaptation to higher temperatures and facilitating migration will instead be needed to secure coral reef survival.

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Section: Plos Climatementioning

confidence: 99%

Section: Plos Climatementioning

confidence: 99%

Future loss of local-scale thermal refugia in coral reef ecosystems

et al. 2022

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“…Chlorophyll-a is often used for determining inland water trophic state and productivity (Gitelson et al, 2008). The concentration of TSM may be caused mainly by the remnants of inorganic materials and wastewater molecules due to the anthropogenic activities around the water body (Sulistiawati et al, 2020).…”

Section: Case 2 Regional Coast Colour (C2rcc) Algorithmmentioning

confidence: 99%

Water Quality Monitoring Using Landsat 8 and Sentinel-2 Satellite Data (2014–2020) in Timsah Lake, Ismailia, Suez Canal Region (Egypt)

Seleem

Bafi

Karantzia

et al. 2022

J Indian Soc Remote Sens

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The present study aims to monitor the water quality in Timsah Lake by satellite data, the largest water body in Ismailia district, Egypt. To achieve this, multi-temporal space-born data of both Landsat-8 OLI- (L1 and L2) and Sentinel-2 (2A and 2B) were used during 2014–2020. The methodologies of Case 2 regional coast colour algorithm and aquatic reflectance were applied for monitoring the physical properties of different water characteristics encompassing chlorophyll-a, total suspended matter (TSM), and aquatic reflectance. Satellite data from dry and wet seasons (2014–2020) were selected to examine seasonal and temporal variation. Comparing water quality through the dry and wet seasons (2014–2020) is to avoid the difference in atmospheric conditions and detect seasonal variations. The present study results have shown that the Western Lagoon and its streams are considered the primary source of pollution. Specifically, lower values are observed during August 2015 for TSM (4–17 g m−3) and chlorophyll-a (2–11 g m−3), while the highest values of TSM (23–50 g m−3) appear during August 2018 and for chlorophyll-a during August 2016–2018 (20–40 g m−3). For the wet season for TSM, the lowest values are observed during 2016 (3–10 g m−3), and the maximum is noticed during 2019 (13–29 g m−3); for the chlorophyll-a, maximum values are observed during 2017 (10–23 g m−3).

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“…The composition of the sediments will be, in general, a mixture of organic and inorganic particles (Miller and McKee 2004). The total suspended matter variability is closely related to the particulate input by fluvial discharges and resuspension processes, remnants of inorganic material due to the anthropogenic activities around the water body (Sulistiawati et al 2020). Higher sediment loads in the water column led to poor water quality (Turner and Millward 2002) A comprehensive picture of spatio-temporal variations of water quality estimates has yet to be investigated and estimated for various coastal regions of India.…”

Section: Introductionmentioning

confidence: 99%

Water Quality Parameter estimation using Landsat-8 data (2014-2021) along the Odisha Coast of India

Chacko,

Jayaram

2024

Preprint

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Coastal water quality assessment is vital for monitoring the health of marine ecosystems. This work presents a comprehensive study on coastal water quality estimation along the Odisha coast, India, using Landsat-8 imagery. The study encompasses validation of retrieved parameters and the exploration of spatial and temporal variability. Using Landsat-8 data, we estimated key coastal water quality parameters viz., chlorophyll-a concentration and total suspended matter. To ensure the accuracy of the retrieved parameters, we used in-situ data for validation. The validation results demonstrate a relatively high level of agreement between estimated and in-situ parameters, affirming the reliability of Landsat-8 data for coastal water quality assessment in this region. The retrieved concentration of total suspended matter and chlorophyll-a correlate well with the in-situ data (Pearson coefficient = 0.75 and 0.65, respectively). The 8-year averaged total suspended matter maps showed that highly turbid waters were primarily found around the Dhamra estuarine region, with a total suspended matter concentration greater than 50 g/m3. Moreover, our study revealed a significant spatial variability in water quality parameters along the Odisha coast. Additionally, the study highlighted the spatial and temporal variability of these parameters, providing valuable insights for coastal managements and environmental monitoring effects.

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Marine litter distribution in Ampana Beach Tojo Una-Una Regency Central Sulawesi Province

Cited by 4 publications

References 5 publications

Future loss of local-scale thermal refugia in coral reef ecosystems

Future loss of local-scale thermal refugia in coral reef ecosystems

Water Quality Monitoring Using Landsat 8 and Sentinel-2 Satellite Data (2014–2020) in Timsah Lake, Ismailia, Suez Canal Region (Egypt)

Water Quality Parameter estimation using Landsat-8 data (2014-2021) along the Odisha Coast of India

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