Coastline protection and restoration: A comprehensive review of China's developmental trajectory

Ocean & Coastal Management, Год журнала: 2024, Номер 251, С. 107094 - 107094

Опубликована: Март 14, 2024

Язык: Английский

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Improving Satellite Retrieval of Coastal Aquaculture Pond by Adding Water Quality Parameters

Remote Sensing, Год журнала: 2022, Номер 14(14), С. 3306 - 3306

Опубликована: Июль 8, 2022

Coastal aquaculture is an important supply of animal proteins for human consumption, which expanding globally. Meanwhile, extensive may increase nutrient loadings and environmental concerns along the coast. Accurate information on pond location essential coastal management. Traditional methods use morphological parameters to characterize geometry surface waters differentiate artificially constructed conventional ponds from other water bodies. However, there are bodies with similar morphology (e.g., saltworks, rice fields, small reservoirs) that difficult distinguish ponds, causing a lot omission/commissioning errors in areas complex land-use types. Here, we develop extraction method shape quality map including three steps: (1) Sharpen normalized difference index detect binarize pixels by Otsu method; (2) Connect independent into objects through four-neighbor connectivity algorithm; (3) Calculate features input them classifier supervised classification. We selected eight sites coast China evaluate accuracy generalization our environment heterogeneous landscape. The results showed six transfer characteristics improved distinguishing salt pans, wetland parks, typically had F1 scores > 85%. Our significantly efficiency average, especially when mixed identified area was agreement statistics data 12 provinces China. In addition, approach can effectively improve high-resolution remote sensing images unavailable. This work applied open-source imagery has potential extract long-term series large-scale

Язык: Английский

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Spatial–Temporal Evolution Monitoring and Ecological Risk Assessment of Coastal Wetlands on Hainan Island, China

Remote Sensing, Год журнала: 2023, Номер 15(4), С. 1035 - 1035

Опубликована: Фев. 14, 2023

Coastal wetlands are located at the intersection of land and sea provide extremely important ecological services. The coastal estuarine harbors representative parts wetlands. Changes that occur in harbor microcosms changes occurring more generally. Hainan Island, China, typical tropical islands sensitive to climate change. In context global level rise, studying characteristics spatial temporal distribution on as well their vulnerability, could scientific technological support address adverse effects Using nine target areas, this study systematically studies spatial–temporal evolution Island from 1990 2020. results suggest following: (1) total area has remained relatively stable, but artificial wetlands, especially aquaculture ponds, increased significantly. There is a clear variability mangrove with increase areas high degree protection, such Dongzhai Harbor (DZG). intensity human activity been significantly reduced, Bamen Bay (BMG). (2) overall risk low, average wetland index (WRI) all being below 0.15. higher lower area, DZG. Human activities main factor causing (3) Climate-change-induced rise intensification determinants future trends ecosystem stability. guidance conservation restoration

Язык: Английский

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Impact of current anthropogenic activities on Blesbokspruit wetland microbiome and functions

The Science of The Total Environment, Год журнала: 2024, Номер 915, С. 170010 - 170010

Опубликована: Янв. 13, 2024

Till present, natural wetlands have been continuously subjected to intensive pollution stress in recent years, mainly because of the rapidly growing industrialization and urbanization that are associated with a myriad anthropogenic activities land use practices. These man-made sources change chemical properties wetlands, which turn alter their microbial ecological biodiversity functions. For first time, impact current practices on Blesbokspruit wetland status consequential effect structure functions were investigated. Sites high intensity identified using geographic information systems mapping (GISMapping) microbiome functional profile studied through throughput shotgun metagenomics sequencing analysis. The predominant phyla stemmed along found be Proteobacteria was more dominant water (93 %) than sediments (89 %), followed by firmicutes abundant (9 (6 Bacteroidetes relatively low abundance within both (2 overlying (1 %). genera Klebsiella (70.4 %-28.2 Citrobacter (52.0 %-30.6 Escherichia (51.0 %-8.4 Lynsinibacillus (9.3 %-1.5 observed most sediment samples. Within six polluted sites, Site 2 highly site very COD (900 mg/L), TOC (11.60 NO

Язык: Английский

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Quantification of anthropogenic heat and simulation of its effects on environment and climate: A comprehensive review

Renewable and Sustainable Energy Reviews, Год журнала: 2024, Номер 204, С. 114802 - 114802

Опубликована: Авг. 5, 2024

Язык: Английский

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Comprehensive Analysis of Microplastic Abundance in Macrophytes, Macrophyte-Associated Sediments, and Water in Tropical Coastal Lagoons in Sri Lanka

Water, Год журнала: 2025, Номер 17(2), С. 157 - 157

Опубликована: Янв. 9, 2025

The prevalence and fate of microplastics in macrophytes are insufficiently understood, data on the abundance microplastic (MP) accumulation macrophyte ecosystems urgently needed to fill this knowledge gap. main objectives study were quantify characterize that accumulate macrophytes, associated sediments, water Negombo Lagoon, Sri Lanka. investigation was conducted with specialized sampling extraction techniques. Microplastics detected by fluorescence tagging polymers using Nile red, polymer identification ATR-µFTIR ATR-FTIR. This revealed variations across different species. Gracilaria sp. had a higher 9 ± 3 items g−1 wet weight, followed Chaetomorpha at 8 weight Halodule pinifolia 6 1 weight. root surfaces these species slightly similar levels abundance. Both blue transparent predominant. Fragments (>47%) found percentage samples, but high fiber contents (>60%) sediment samples. Nevertheless, samples contained fragments size range 50–150 μm. comprehensive contributes expanding our awareness regarding influence pollution ecosystems.

Язык: Английский

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Urgent call: Environmental mismanagement after historical flood amplifies Rio Grande do Sul’s ecological crisis in south of Brazil

Anais da Academia Brasileira de Ciências, Год журнала: 2025, Номер 97(1)

Опубликована: Янв. 1, 2025

Язык: Английский

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Watershed land use decreases the nitrogen limitation of benthic algal growth in coastal wetlands of a large oligotrophic lake

Frontiers in Freshwater Science, Год журнала: 2025, Номер 3

Опубликована: Фев. 19, 2025

Introduction Identifying patterns in the primary limiting nutrients of basal trophic levels such as benthic algae can inform prediction potential ecological responses to anthropogenic nutrient loading. In coastal wetlands Laurentian Great Lakes, reduced concentrations reactive nitrogen species ammonium and nitrate may limit algal growth, especially when loading is minimal. However, response macronutrient inputs remains understudied, Lake Superior wetlands. Methods We conducted amendment assays using diffusing substrate devices 25 along southwestern shore spring, summer, fall. These allowed us investigate seasonal regional variation limitation status relationship between limitation, situ water quality (dissolved total phosphorus, temperature, dissolved oxygen, specific conductivity, suspended solids), watershed land use. Results found that was common, particularly during with 60% exhibiting this condition, while phosphorus not observed any wetland season. The strongest N Apostle Islands National Lakeshore where cover almost entirely natural. Wetlands more developed watersheds, including those St. Louis River Estuary, had a lower degree ( p = 0.003). Nitrogen fall, but most pronounced summer. Discussion findings suggest predominates these wetlands, contrasting well-documented lake's pelagic zone. Our study also highlights for stimulate excessive growth regions. are consistent other regions Lakes support need continued monitoring targeted mitigation both shoreline habitats large lakes.

Язык: Английский

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Recent events and climate change impacts related to the environment, ecosystem, and fishery resources in northern Japanese coastal lagoons

Estuarine Coastal and Shelf Science, Год журнала: 2025, Номер unknown, С. 109251 - 109251

Опубликована: Март 1, 2025

Язык: Английский

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Marine heatwaves effects on quantity, composition, and turnover of sedimentary organic matter in a Mediterranean coastal lagoon: a benthocosm study

Estuarine Coastal and Shelf Science, Год журнала: 2025, Номер unknown, С. 109252 - 109252

Опубликована: Март 1, 2025

Язык: Английский

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