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aesthetics; air; atmospheric deposition; carbon sequestration; chemical pollutants; climate; climate change; cost effectiveness; ecosystems; environmental impact; green infrastructure; human health; land; lawns and turf; phytoremediation; risk; roads; soil management; soil pollution; soil quality; traffic; urban soils; urbanization; water flow; weather
Abstract:
... Urban areas are facing a range of environmental challenges including air, water and soil pollution as a result of industrial, domestic and traffic emissions. In addition, global climate change is likely to aggravate certain urban problems and disturb the urban ecology by increasing the frequency and severity of extreme weather events. In the context of urbanization growth and the consequent impact ...
... Antibiotic resistance has become a major Global Health concern and a better understanding on the global spread mechanisms of antibiotic resistant bacteria (ARB) and intercontinental ARB exchange is needed. We measured atmospheric depositions of antibiotic resistance genes (ARGs) by quantitative (q)PCR in rain/snow collected fortnightly along 4 y. at a remote high mountain LTER (Long-Term Ecologica ...
Helena Vallicrosa; Jordi Sardans; Joan Maspons; Paolo Zuccarini; Marcos Fernández‐Martínez; Marijn Bauters; Daniel S. Goll; Philippe Ciais; Michael Obersteiner; Ivan A. Janssens; Josep Peñuelas
... Consistent information on the current elemental composition of vegetation at global scale and the variables that determine it is lacking. To fill this gap, we gathered a total of 30 912 georeferenced records on woody plants foliar concentrations of nitrogen (N), phosphorus (P) and potassium (K) from published databases, and produced global maps of foliar N, P and K concentrations for woody plants ...
... Cryoconite holes host active microbial communities despite their extreme physical conditions. In the McMurdo Dry Valleys of Antarctica, these perennially cold, mini-ecosystems form ice lids that can persist for many years thereby isolating the cryoconite from nutrient and carbon inputs. Despite much recent work on cryoconite holes in Antarctica, little is known about nutrient dynamics and limitati ...
Japan; acidification; air pollution; ammonia; atmospheric deposition; biodiversity; data collection; drought; forest management; forested watersheds; lakes; nitrates; nitrogen; nitrogen cycle; plant nutrition; soil; streams; sulfur; China; Sea of Japan
Abstract:
... Excess inputs of reactive nitrogen (Nr) from the atmosphere will cause disturbances to forest ecosystems, including soil and stream water acidification, plant nutrient imbalances, alterations of species compositions (such as biodiversity losses), and nitrogen (N) leaching into stream water. Central Japan (or Chubu region) has experienced both domestic and transboundary air pollution since the 1950 ...
Audrey Campeau; Karin Eklöf; Anne L. Soerensen; Staffan Åkerblom; Shengliu Yuan; Holger Hintelmann; Magdalena Bieroza; Stephan Köhler; Christian Zdanowicz
... The Arctic environment harbors a complex mosaic of mercury (Hg) and carbon (C) reservoirs, some of which are rapidly destabilizing in response to climate warming. The sources of riverine Hg across the Mackenzie River basin (MRB) are uncertain, which leads to a poor understanding of potential future release. Measurements of dissolved and particulate mercury (DHg, PHg) and carbon (DOC, POC) concentr ...
... Long‐term ecosystem studies are valuable for understanding integrated ecosystem response to global changes in atmospheric deposition and climate. We examined trends for a 35‐year period (1982/83–2017/18) in concentrations of a range of solutes in precipitation and stream water from nine headwater catchments spanning elevation and surficial geology gradients at the Turkey Lakes watershed (TLW) in n ...
... We used a flux deconstruction approach on peat and sediment archives of four bogs and five lakes from two subarctic taiga ecoregions of the Northwest Territories (Canada) to distinguish the atmospheric and catchment-based responses to changing metal pollution emissions over the last 2000 years. Bogs tracked the atmospheric signal, whereas lake sediments provided a mixed atmospheric and catchment-b ...
... Mountains are among the most sensitive ecosystems to climate change, and one of the most evident signs of climate-related effect is the continuous net loss of ice from the cryosphere. Several studies showed that meltwater from glaciated and perennially frozen areas can profoundly affect alpine aquatic ecosystems. Here, we present the impressive temporal increase in solutes in Lake Leit, a mountain ...
... The lateral flux of dissolved organic carbon (DOC) from soils to inland waters and ultimately to the ocean represents a fundamental component of the global carbon cycle. To estimate the DOC flux, we developed an empirical terrestrial-aquatic DOC fluxes model (TAF-DOC). TAF-DOC incorporates various environmental factors (e.g., meteorology, sulfur, and nitrogen deposition) that to-date have not been ...
air temperature; atmospheric deposition; autocorrelation; biosphere; carbon sequestration; climate; dissolved organic carbon; geophysics; land cover; landscapes; nitrogen; observational studies; research; seasonal variation; sulfur; time series analysis; watersheds
Abstract:
... The export of dissolved organic carbon (DOC) from a watershed is a key component of the terrestrial biosphere carbon cycle. There is a need to improve our understanding of how and by how much various environmental factors are driving the temporal patterns of DOC export in order to accurately model and evaluate terrestrial carbon storage and fluxes. In this synthesis, we compiled observational data ...
acidification; atmospheric deposition; climate; color; humans; land use; time series analysis; Northeastern United States
Abstract:
... Multiple studies have reported widespread browning of Northern Hemisphere lakes. Most examples are from boreal lakes that have experienced limited human influence, and browning has alternatively been attributed to changes in atmospheric deposition, climate, and land use. To determine the extent and possible causes of browning across a more geographically diverse region, we examined watercolor and ...
atmospheric deposition; climate; forest ecosystems; forest habitats; forests; lichens; nitrogen; sulfur; Western United States
Abstract:
... Critical loads are thresholds of atmospheric deposition below which harmful ecological effects do not occur. Because lichens are sensitive to atmospheric deposition, lichen-based critical loads can foreshadow changes of other forest processes. Here, we derive critical loads of nitrogen (N) and sulfur (S) deposition for continental US and coastal Alaskan forests, based on nationally consistent lich ...
acidification; air temperature; atmospheric deposition; case studies; chlorides; climate; climate change; community structure; data collection; decline; environment; humans; hydrochemistry; lakes; land use; models; sulfates; surface area; weather; winter; zooplankton; Northeastern United States
Abstract:
... Mountain ponds in the northeastern US have undergone acidification and subsequent recovery due to changes in atmospheric deposition, and also reflect physical and biological responses to climate change. These ponds are distinct from other lakes and ponds in the region as they are higher in elevation, relatively small, and have little direct impact from human land use in their watersheds. They are ...
... In this review, global change processes have been linked to polycyclic aromatic compounds (PACs) in Canada and a first national budget of sources and sinks has been derived. Sources are dominated by wildfire emissions that affect western and northern regions of Canada disproportionately due to the location of Pacific and boreal forests and the direction of prevailing winds. Wildfire emissions are ...
J.P. Corella; M.J. Sierra; A. Garralón; R. Millán; J. Rodríguez-Alonso; M.P. Mata; A. Vicente de Vera; A. Moreno; P. González-Sampériz; B. Duval; D. Amouroux; P. Vivez; C.A. Cuevas; J.A. Adame; B. Wilhelm; A. Saiz-Lopez; B.L. Valero-Garcés
... We have analyzed potential harmful trace elements (PHTE; Pb, Hg, Zn, As and Cu) on sediment cores retrieved from lake Marboré (LM) (2612 m a.s.l, 42°41′N; 0° 2′E). PHTE variability allowed us to reconstruct the timing and magnitude of trace metal pollutants fluxes over the last 3000 years in the Central Pyrenees. A statistical treatment of the dataset (PCA) enabled us to discern the depositional p ...
Masamichi Takahashi; Zhaozhong Feng; Tatyana A. Mikhailova; Olga V. Kalugina; Olga V. Shergina; Larisa V. Afanasieva; Roland Kueh Jui Heng; Nik Muhamad Abd Majid; Hiroyuki Sase
Japan; Siberia; air pollution; atmospheric deposition; boreal forests; climate; climate change; economic development; ecosystems; environment; forest decline; latitude; nitrogen; ozone; particulates; photosynthesis; tree physiology; trees; China; Korean Peninsula; Mongolia; South East Asia
Abstract:
... Air pollution and atmospheric deposition have adverse effects on tree and forest health. We reviewed studies on tree and forest decline in Northeast and Southeast Asia, Siberia, and the Russian Far East (hereafter referred to as East Asia). This included studies published in domestic journals and languages. We identified information about the locations, causes, periods, and tree species exhibiting ...
... Atmospheric deposition of aerosols to the ocean provides an important pathway for the supply of vital micronutrients, including trace metals. These trace metals are essential for phytoplankton growth, and therefore their delivery to marine ecosystems can strongly influence the ocean carbon cycle. The solubility of trace metals in aerosols is a key parameter to better constrain their potential impa ...
... Priming effects (PE) can greatly influence global carbon (C) storage in soil and lead to climate feedbacks by accelerating the decomposition of organic matter (OM). Although nitrogen (N) availability can alter the magnitude and direction of priming (stoichiometric constrains), it remains unclear whether additions of NO₃⁻ (nitrate) and NH₄⁺ (ammonium) have distinct effects on the decomposition of v ...
... Widespread declines in mercury (Hg) in fish in pristine lakes in Fennoscandia since the 1970s are unexplained. Interactions between climate, atmospheric deposition, and elemental cycling of carbon (C), sulphur (S) and Hg are complex and affect Hg bioaccumulation. A parallel significant decline in methyl-Hg (MeHg) concentrations in aquatic macroinvertebrates (Chironomidae) was found between 1976–78 ...