An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
anthropogenicactivities, etc ; carbon; chlorophyll; environmental factors; freshwater; humans; nitrogen; risk; spatial data; total nitrogen; total phosphorus; turbidity; water quality; water salinity; China; Show all 15 Subjects
Abstract:
... Anthropogenic and natural disturbance to inland aquatic ecosystems displays a notable spatial difference, yet data to measure these differences are scarce. This study encompasses 217 lakes distributed over five lake regions of China and elucidates the environmental factors determining the spatial variability of the water quality and trophic status. A significant correlation between human modificat ...
anthropogenicactivities, etc ; Bryconops; aluminum; antioxidant activity; antioxidants; bauxite; biomarkers; fish; glutathione transferase; hydrology; laws and regulations; liver; muscles; oxidative stress; research; sediments; Amazonia; Show all 17 Subjects
Abstract:
... The Eastern Amazon is rich in bauxite ore. The extraction and processing of bauxite lead to the mobilization of Aluminum (Al) and other metals in environmental. We evaluated the metals (Al, Mn, Ba, and Cr) concentration in tissue, water, and sediment associated with antioxidant and oxidative damage responses in Bryconops caudomaculatus. The samplings were done in two hydrological periods (post-rai ...
anthropogenicactivities, etc ; altitude; aquifers; dissolved organic matter; factor analysis; fluorescence; forests; groundwater; heavy metals; land use; nitrates; soil; surface water; vascular plants; wastewater treatment; Austria; Show all 16 Subjects
Abstract:
... Dissolved organic matter (DOM) in terrestrial groundwater is generally low in concentration compared to inland surface waters. However, the overall amount of groundwater DOM is huge, as there is 100 times more fresh groundwater than fresh surface water. To date, research on groundwater DOM has merely focused on specific threats to humans such as e.g. DOM and heavy metal complexations and DOM from ...
anthropogenicactivities, etc ; environment; estuaries; heavy metals; humans; hydrodynamics; pollution; riparian areas; rivers; sediment yield; sedimentation rate; sediments; socioeconomic development; storms; total organic carbon; Yangtze River; Show all 16 Subjects
Abstract:
... Complex transformations of heavy metals in the mega-river-estuary continuum limit our understanding of their pollution history. This study investigated sedimentary compositions of heavy metals, major elements, total organic carbon, grain size, and radionuclides to study spatiotemporal variations in heavy metal accumulation patterns and their controlling mechanisms in four sediment cores (E1-E4) fr ...
anthropogenicactivities, etc ; environmental factors; sediments; Show all 3 Subjects
Abstract:
... The current critical review examines the application of 11 frequently used sedimentary metal indices in their ability to accurately assess the magnitude of human-induced change (enrichment) in the highly vulnerable and intensely developed coastal environment. The plethora and rapidly increasing number of sedimentary metal indices should, if not derived for special purposes, produce a consistent as ...
anthropogenicactivities, etc ; industrialization; oxygen; research; Chile; Show all 5 Subjects
Abstract:
... This study examines metal concentrations in sediments under the influence of the oxygen minimum zone of the SE-Pacific and the anthropogenic impact following industrialization in Caldera Bay (27° S), which is one of the main ore-loading ports in operation from 1849. ²¹⁰Pb and the CRS dating method were employed to estimate the age in two sediment cores sectioned at 1 cm. Metal concentrations from ...
anthropogenicactivities, etc ; human health; water quality; Show all 3 Subjects
Abstract:
... Water degradation has worsened across the globe since the 1990s and is expected to escalate even further, leading to increased threats and negative impacts to human health and the environment. Global water quality challenges need urgent attention and cohesive informed actions to avoid a global water predicament in the near future. ...
anthropogenicactivities, etc ; algorithms; geophysics; models; prediction; Show all 5 Subjects
Abstract:
... The subsurface velocity model is crucial for high-resolution seismic imaging. Although full-waveform inversion (FWI) is a high-accuracy velocity inversion method, it inevitably suffers from challenging problems, including human interference, strong nonuniqueness, and high computing costs. As an efficient and accurate nonlinear algorithm, deep learning (DL) has been used to estimate velocity models ...
anthropogenicactivities, etc ; data collection; time series analysis; Show all 3 Subjects
Abstract:
... The combination of continuing anthropogenic impact on ecosystems across the globe and the observation of catastrophic shifts in some systems has generated substantial interest in understanding and predicting ecological tipping points. The recent establishment and full operation of NEON has created an opportunity for researchers to access extensive datasets monitoring the composition and functionin ...
anthropogenicactivities, etc ; climate; summer; temperature; water; winter; Show all 6 Subjects
Abstract:
... Scenario projections of climate changes in the XXI century in Crimea are presented based on the data of an ensemble of models of the recent generation CMIP6 for aggressive SSP585 and moderate SSP245 scenarios of anthropogenic impact. Variations of season-averaged values of temperature and precipitation for winter and summer, the number of days with extreme anomalies of temperature and precipitatio ...
anthropogenicactivities, etc ; coastal zone management; environment; urbanization; Show all 4 Subjects
Abstract:
... Benthic indices have been widely used across different coastal ecosystems to assess ecological quality and detect anthropic impacts, but very few studies investigated their effectiveness on sandy beaches. Here, we evaluated and compared the efficacy of 12 assemblage-based benthic indices in assessing ecological quality in beaches, across a gradient of anthropic pressure and natural variability in ...
anthropogenicactivities, etc ; Achillea nobilis; cadmium; forage; pollution; Show all 5 Subjects
Abstract:
... Arid, herb–grass steppes are widespread in the plain zone of Dagestan. Their herbage contains yarrow plants that form vast thickets in the lowland. The accumulation of heavy metals in organs of plants of the genus Achillea L. and in soils under the conditions of Dagestan has been studied for the first time. The concentrations of Fe, Mn, Pb, and Cd have been determined in the aboveground and underg ...
anthropogenicactivities, etc ; automation; biodiversity; databases; metadata; taxonomy; Show all 6 Subjects
Abstract:
... As the impact of anthropogenic activity on the environment has grown, research into biodiversity change and associated threats has also accelerated. Synthesising this vast literature is important for understanding the drivers of biodiversity change and identifying those actions that will mitigate further ecological losses. However, keeping pace with an ever‐increasing publication rate presents a s ...
anthropogenicactivities, etc ; atmospheric precipitation; biodiversity; biogeography; temperature; Show all 5 Subjects
Abstract:
... The small‐island effect (SIE) is an important pattern in the research fields of island biogeography and biodiversity science. Amphibians and reptiles, while playing important roles in ecosystems, are experiencing global declines. However, to date, no study has explicitly examined the generality and processes underlying the SIE in amphibians and reptiles. Here, we complied 105 global data sets to s ...
anthropogenicactivities, etc ; humans; microplastics; pollution; research; sediments; Show all 6 Subjects
Abstract:
... Plastic debris is becoming a growing environmental concern and microplastics (size <5 mm) are one of the most important fractions due to their environmental and human potential deleterious effects. Despite the recent effort done on estimating their concentrations in several ecosystems, the dynamics of microplastic accumulation are not sufficiently studied. In this work, short-and long-term micropl ...
anthropogenicactivities, etc ; energy transfer; information exchange; prototypes; robots; Show all 5 Subjects
Abstract:
... To create multifunctional robotic platforms for agricultural use, it is reasonable to use a modular principle that will allow installing various equipment depending on the tasks assigned to the robotic tool. Providing autonomous reconfiguration capabilities will reduce human interference and maintenance costs. (Research purpose) This work is aimed at developing a scalable device for interfacing fu ...
Pierre-Denis Plisnier; Robert Kayanda; Sally MacIntyre; Kevin Obiero; William Okello; Anthony Vodacek; Christine Cocquyt; Hussein Abegaz; Alfred Achieng; Balagizi Akonkwa; Christian Albrecht; Charles Balagizi; James Barasa; Rafiki Abel Bashonga; Alexis Bashonga Bishobibiri; Harvey Bootsma; Alberto V. Borges; Geoffrey Chavula; Tallent Dadi; Els L.R. De Keyzer; Patrick J. Doran; Nestory Gabagambi; Robert Gatare; Andrew Gemmell; Abebe Getahun; Lloyd H. Haambiya; Scott N. Higgins; Béni L. Hyangya; Ken Irvine; Mwapu Isumbisho; Carlos Jonasse; Cyprian Katongo; Sergei Katsev; James Keyombe; Ismael Kimirei; Tchalondawa Kisekelwa; Mary Kishe; Simon Otoung A. Koding; Jeppe Kolding; Benjamin M. Kraemer; Peter Limbu; Evans Lomodei; Shigalla B. Mahongo; John Malala; Stella Mbabazi; Pascal M. Masilya; Matt McCandless; Modesta Medard; Zephaniah Migeni Ajode; Hillary D. Mrosso; Eric R. Mudakikwa; N'sibula Mulimbwa; Déo Mushagalusa; Fabrice A. Muvundja; Angela Nankabirwa; David Nahimana; Benjamin P. Ngatunga; Maxon Ngochera; Sharon Nicholson; Muderhwa Nshombo; Gaspard Ntakimazi; Chrispine Nyamweya; Joyce Ikwaput Nyeko; Daniel Olago; Tekle Olbamo; Catherine M. O'Reilly; Natacha Pasche; Harris Phiri; Nina Raasakka; Anham Salyani; Claver Sibomana; Greg M. Silsbe; Stephanie Smith; Robert W. Sterner; Wim Thiery; Janviere Tuyisenge; Martin Van der Knaap; Maarten Van Steenberge; Paul A.M. van Zwieten; Erik Verheyen; Mulugeta Wakjira; John Walakira; Oscar Ndeo Wembo; Theodore Lawrence
anthropogenicactivities, etc ; climate; data collection; humans; politics; research; Show all 6 Subjects
Abstract:
... To ensure the long-term sustainable use of African Great Lakes (AGL), and to better understand the functioning of these ecosystems, authorities, managers and scientists need regularly collected scientific data and information of key environmental indicators over multi-years to make informed decisions. Monitoring is regularly conducted at some sites across AGL; while at others sites, it is rare or ...
anthropogenicactivities, etc ; climate change; eutrophication; littoral zone; storms; Show all 5 Subjects
Abstract:
... Climate change is not only changing the mean values of environmental parameters that modulate ecosystems, but also the regime of disturbances. Among them, extreme events have a key role in structuring biological communities. Ecosystems are frequently suffering multiple anthropogenic pressures which can cause effects that are not additive. Thus, the effects of extreme events need to be studied in c ...
anthropogenicactivities, etc ; Carnivora; Didelphimorphia; carnivores; humans; interspecific competition; Show all 6 Subjects
Abstract:
... Interspecific competition is an important evolutionary force, influencing interactions between species and shaping the composition of biological communities. In mammalian carnivores, to reduce the risks of negative encounters between competitors, species can employ a strategy of temporal partitioning, adapting activity patterns to limit synchronous activity. This strategy of non‐human competitor a ...
anthropogenicactivities, etc ; adsorption; clay; pollution; toxicity; waste management; Show all 6 Subjects
Abstract:
... The increasing anthropogenic pressure results in environmental pollution and thus adversely affects the integrity of ecosystems. Consequently, various methods of removing pollutants from effluents have been developed and used to minimise this negative impact, with adsorption on clay minerals identified as the most promising approach. This review examines the adsorption of heavy metals, radionuclid ...