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ISSN: 2589-4714

Detection of historical landscape changes in Lake Victoria Basin, Kenya, using remote sensing multi-spectral indices

•Detecting landscape changes is vital for decision-making in management.•Multi-spectral remote sensing indices are effective in analyzing urbanization.•Wetlands, vegetated landscapes and farm lands...

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Sources of terrestrial nitrogen and phosphorus mobilization in South and South East Asian coastal ecosystems

•N and P from land conversions, fertilizer and sewage in two coastal watersheds.•Land conversions reduced soil carbon, with variable effects on N and P.•Fertilizer was the largest source of N and P...

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Welfare impacts of water security in Kenya: Evidence from the Upper Ewaso Ngiro North Catchment Area

•Improved water security can increase household income, and reduce exposure to water-related diseases.•Water insecurity in sub-catchment areas is existential and should be addressed with urgency to...

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Hydrological connectivity, surface water quality and distribution of fish species within sub-locations of an urban oxbow lake, East India

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Bioaccumulation of heavy metals in edible tissue of crab (Scylla serrata) from an estuarine Ramsar site in Kerala, South India

Wetlands are under severe threat due to anthropogenic activities and pollutants. Many pollutants such as heavy metals may accumulate to a hazardous level. In the present study, Scylla serrata, the mud...

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Exploring biosorption properties of Litchi chinensis peel for a cationic dye Rhodamine 6G in Liquid/Solid phase system: Kinetics and equilibrium studies

•The Rhodamine 6G (Rh6G), a cationic dye.•Litchi Chinensis peel powder was employed in native condition as biosorbent.•Adsorption and Kinetics and Isotherm studies were performed in the liquid/solid...

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Assessment of water, soil contamination and land cover changes in Sims and Vince Bayou urban watersheds of Houston, Texas

•The N, P, Cu, Ni, Pb, and Zn concentrations in water samples of Sims and Vince Bayou can pose threat to aquatic organisms.•The Cr, Cu, Ni, Pb and Zn exceeded the levels of soil background concentrations...

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A background review and ecological risk assessment of the tactical basin plan for the Otter Creek Basin watershed ecosystem restoration project in central Vermont, USA

•A conceptual site model of a watershed ecosystem in central Vermont, USA.•A baseline setting prior to the impact of Hurricane Irene.•Systematic literature review of regulatory milestone reports from...

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Mapping the spatio-temporal dynamics of global mangrove crabs to reveal its status and challenges: A bibliometric evaluation of research output during 1980–2016

•A bibliometric analysis reveals research tendencies of mangrove crabs from 1980 to 2016.•The average annual output of the publications was low.•Brazil, Australia, USA, China, and Kenya were the top...

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Alum, Chitin and Sago as coagulants for the optimization of process parameters focussing on coagulant dose and mixing speed

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Biochemical and genotoxic effects of some pesticides on the Egyptian Toads, Sclerophrys regularis (Reuss, 1833)

•Bifenthrin was highly toxic to the Egyptian toads, followed by temephos, glyphosate and then CuSO4.•These pesticides could change the genetic and biochemical parameters of the Egyptian toads.•The Egyptian...

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Assessment of ecosystem health status using benthic diversity as tools in coastal sediments off the South West Coast, India

•Benthic diversity and ecosystem health were examined in coastal sediments of South West Tamil Nadu.•AMBI & M−AMBI results showed that among the 14 stations, 2 were categorized as “poor” and 9 as “bad.”•Ecosystem...

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Contamination by heavy metals from mining activities: An ecological impact assessment of Mura and Kimpulande Rivers, Democratic Republic of the Congo

•Metal levels were assessed in samples collected along Mura and Kimpulande Rivers.•ICP-MS, AAS and CVAFS indicated high heavy metal concentrations.•Extremely severe enrichment and high pollution levels...

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Wetland change prediction of Ogun-River Basin, Nigeria: Application of cellular automata Markov and remote sensing techniques

•Salinity intrusion and stressed vegetated cover are drivers of wetland changes.•Soil types, and digital elevation revealed wetland qualitative differences.•Information on land cover change is indispensable...

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Metal accumulation in two crab species from the Woji Creek (Nigeria) and human health risk assessment due to crab consumption: Callinectes sapidus and Cardisoma armatum

•In the tissues of the three crab species, [Pb] and [Cr] were highest.•The hazard index (HI) was below 1 for male and female (adults and children).•The crabs could be a dietary source of chronic dose...

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Research progress and development trend of coastal wetland restoration in greater bay areas

•We explored the progress and development trend of coastal restoration in greater bay.•Restoration methods are mainly based on biotic, hydrologic, and chemical processes.•Functional processes are critical...

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Identifying priority areas of Four Major Chinese carps’ species in the Pearl River basin based on the MaxEnt model

•The MaxEnt model was used to predict the hot spot distribution area of FMCC in PRB.•The distribution of FMCC in the PRB gradually increases from the upper reaches to the middle and lower reaches.•The...

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Dynamics and Drivers of Land Use and Land Cover Changes in Migori River Watershed, Western Kenya Region

•The paper assesses the trends and patterns of LULC changes and their drivers in the Migori River watershed in Kenya from 1980 to 2020.•The study employed a mixed method involving remote sensing and...

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Comparison of avian community assembly and its disease transmission risk between urban and surrounding rural area in Shanghai, China

•Urbanization has led to a decline in bird species and densities.•Most species carrying avian influenza virus were migratory waterbirds (Anatidae and shorebird)....

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Biogeochemical consequences of grassland degradation on linked soil, stream, and lake ecosystems in watersheds: A review and case study

•Grasslands suffer severe threat from ongoing degradation globally.•Their degradation differentially affects C, N, and P in terrestrial-aquatic systems.•An integrated study demonstrated cascading influences...

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Impact of applying imazapyr on the control of Spartina alterniflora and its eco-environments in the Yellow River Delta, China

•The control of Spartina alterniflora by imazapyr is superior to the physical treatment method in terms of technology, cost, time-consuming and environmental protection.•Both imazapyr itself and its...

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Recent progress in coupled surface–ground water models and their potential in watershed hydro-biogeochemical studies: A review

•Recent progress in coupled surface-ground water models were reviewed.•SWAT–MODFLOW model has a rapid development and wide application since 1999.•Models focus on hydrologic processes, solute transport...

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Development of a pH-paralleling approach of quantifying six-category pharmaceuticals in surface water using SPE-HPLC-MS/MS

•A SPE-HPLC-MS/MS method for simultaneous analysis of six-category pharmaceuticals.•Two water portions were adjusted to pH 3 and 9 but both spiked with 0.2 g Na2EDTA.•Quantified 94 compounds of 6 categories...

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Sustainable water resource management using surface-groundwater modelling: Motueka-Riwaka Plains, New Zealand

•Demand for water is increasing in the Motueka-Riwaka Plains.•The aquifer system is highly connected to surface water bodies.•Over-abstraction of groundwater increases the potential for saltwater intrusion.•Anthropogenic...

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