In response, analyses of available data from a higher than normal discharge year was examined to investigate the response of wetlands to above average river discharge and determine whether the relative influences of precipitation and flooding on saturation observed in the 2010–2011 dataset would persist.
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Regions of the world with drastic wetland deterioration occur mainly in areas in which humans have accelerated subsidence rates and/or decreased sediment delivery …
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The relationships between landscape predictor and wetland response variables were strongest within large areas, 0.8 to 1.8 km from the wetlands. ... Zhang J, Ma K, Fu B (2010) Wetland loss under the impact of agricultural development in the Sanjiang Plain, NE China. Environ Monit Assess 166:139–148. Article PubMed Google Scholar ...
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Temporal changes (1970–2016) in St. Lawrence River wetlands were assessed between Cornwall and Québec (≈400 km) to assess wetland response to cumulative anthropogenic pressures in the watershed.
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We analyzed data from 1138 wetland sites across the conterminous United States (US) as part of the 2011 National Wetland Condition Assessment (NWCA) to investigate the …
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Introduction. Coastal wetlands play an important role in the global cycle by acting as a valuable carbon sink due to their high sedimentation rates and burial of organic carbon (Drake et al., 2015), which store at least 44.6 Tg C yr −1 globally (Chmura et al., 2003).In coastal ecosystem, wetland soils were the important carbon pool as well as the …
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Change Biol. 16, 680–695 (2010). ADS Google Scholar ... Yang, S. L. et al. Impact of dams on Yangtze River sediment supply to the sea and delta intertidal wetland response. J. Geophys.
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The Wetland Monitoring and Assessment Program (WetMAP) is measuring the response of wetland vegetation and a range of fauna to the delivery of environmental water. The findings of this work are helping to use environmental water more effectively; prioritise watering locations across the state; identify the types of water regimes needed …
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1 Altmetric Metrics Abstract Dryland wetlands are resilient ecosystems that can adapt to extreme periodic drought–flood episodes. Climate change projections show …
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Over the 1970-2010 period, dropping water levels yielded slightly increasing wetland areas, owing to the downslope colonization of emergent and submerged plants. ... Our results highlight the strong response of riverine wetlands to a wide range of human pressures, including dropping water levels, changing nutrient concentrations, rising ...
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Driving wetland models with weather data from many stations has proven to be an instructive proxy for understanding both the temporal and spatial variability of wetland dynamics, and the sensitivity and geographic complexity of the response of prairie wetlands to climate change (Johnson et al. 2005). The range of basin morphometry of …
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The slightly higher rates observed in the wetland accretion record suggest that non-linear factors may affect a wetland's response to accelerated SLR – a topic which deserves further research. The structure of the variability in accretion rate and wetland elevation change is also similar to the structure of the variability in the New York ...
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We used static, elevation and land cover data to estimate sea level rise impacts (SLR) to urban, developed lands and coastal wetland systems in Everglades National Park and the East and West coastal regions in South Florida. Maps and data tables estimating potential state change to open water were compiled through overlay analysis …
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Wetland Response to Modified Hydrology with Respect to . Salinity Management: Biological Monitoring ... July 1, 2010. P0640003-01 2010 2 . P0640003-01 2010 3 WETLAND RESONSE TO M ODIFIED HYDROLOGY ...
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The management of the catchment drivers of wetland condition faces an additional challenge when viewed from the long-term record of change. Again, it is usual for the natural ecological character of a wetland to be presumed, and it is not unusual for this to represent a derived state, one that has already shifted owing to human impact on …
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Methane flux in non-wetland soils in response to nitrogen addition: a meta-analysis Ecology. 2010 Nov;91(11):3242-51. doi: 10.1890/09-2185.1. Authors E L Aronson 1, B R Helliker. Affiliation 1 Leidy Labs ... To better understand the interactions between CH4-cycling microorganisms and N in the non-wetland soil system, a meta-analysis was ...
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Over the 1970–2010 period, dropping water levels yielded slightly increasing wetland areas, owing to the downslope colonization of emergent and submerged plants. …
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Biogeochemical theory predicts that soil nitrogen (N) scarcity may limit natural ecosystem response to elevated CO 2 concentration, diminishing the CO 2 -fertilization effect on terrestrial plant ...
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Anthropogenic inputs of nutrients and sediment simultaneously impact coastal ecosystems, such as wetlands, especially during storms. Independent and combined effects of sediment and ammonium nitrate loading on nitrogen fixation rates and diversity of microbes that fix nitrogen (diazotrophs) were tested via field manipulations in Spartina …
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Abstract. The vulnerability of coastal wetlands to future sea-level rise (SLR) has been extensively studied in recent years, and models of coastal wetland evolution have been developed to assess and quantify the expected impacts. Coastal wetlands respond to SLR by vertical accretion and landward migration. Wetlands accrete due to their …
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Thus, long-term declines in nitrogen fixation rates in response to increasingly frequent nutrient loading and sedimentation may potentially alter nitrogen sources for vascular …
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This paper provides a quantitative assessment method for determining the spatial variation of coastal wetland vulnerability under oil spill stress, which can be used to better understand potential oil spill risks in coastal wetlands to support spill prevention and improve response readiness in the future. 1.
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wetlands and the corresponding buffer widths. Please submit this in the form of a: • A memo summarizing methods used for the desktop delineation. • Map(s) of the offsite wetlands and their corresponding buffers. • And an Ecology rating form for each wetland. Response: In response to item 4, Figure 1 shows the location of the potential ...
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Some coastal wetlands can adapt to rising seas via landward migration, where coastal wetlands move landward into adjacent upslope or upriver ecosystems in …
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A 2.5 km stretch of a sandur (glacial outwash plain) neighbouring a wetland in South-east Iceland was monitored from 1 September 2015 to 2 September 2016. Improved understanding of the hydrological regime at this sandur-wetland boundary is warranted as local farmers are losing ground to the frequent flooding of their wet …
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Coastal wetlands experience acute and chronic disturbances which can affect rates of surface elevation change and vertical accretion of surface sediments. Disturbance can either amplify or impair the ability of wetlands to maintain their position within the tidal frame, with implications for their long-term persistence. Using an 8-year …
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PDF | On Jun 1, 2010, P. Rahilly and others published Wetland response to modified hydrology with respect to salinity management : biological monitoring | Find, read and cite all the research you ...
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From Table 1, the total wetland area declined from 1990 to 2010, especially during 1990–2000 (decreased by 35.8%). The change trends were different for various …
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Wetland ecosystems maintain a fragile balance between soil, water, plant, microbial, and atmospheric processes, which regulates water flow and water quality (Reddy and Delaune, 2008). Even minor gradients (naturally or anthropogenically induced) in hydrological and climatic parameters (e.g., wetting and drying, flooding, freezing and thawing, …
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The variation of groundwater quality across different regions is of great importance in the study of groundwater so as to ascertain the sources of contaminants to available water sources. Geochemical assessment of groundwater samples from hand-dug wells were done within the vicinity of Ajakanga dumpsite, Ibadan, Southwestern, Nigeria, …
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The positive response of wetland methane (CH4) emissions to climate change is an important yet uncertain Earth-system feedback that amplifies atmospheric CH4 concentrations. Here, using a wetland ...
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Sea level rise has the potential to substantially alter the extent and nature of coastal wetlands and the critical ecological services they provide. In making choices about how to respond to rising sea level, planners are challenged with weighing easily quantified risks (e.g., loss of property value due to inundation) against those that are more difficult …
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The Wetlands mapper is designed to deliver easy-to-use, map like views of America's Wetland resources. It integrates digital map data along with other resource information to produce current information on the status, extent, characteristics and functions of wetlands, riparian., and deepwater habitats.
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Wetland ecosystems have comprehensive ecological functions and are sensitive to climate change. ... and the rank of spatiotemporal risk on a regional scale was estimated using a pressure-state-response model. Temperature and precipitation had average rates of increase of 0.44 °C/10a and 12.13 mm/10a, respectively, under different …
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Received 12 October 2009; revised 16 July 2010; accepted 17 August 2010; published 4 December 2010. [1] Wetland restoration is a commonly used approach to …
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Wetland response to current climate variability. ... Common Reed recovered one year after the floods of 2010 and Mixed Marsh/Water Couch recovered 2 years after the floods. However, Mixed Marsh ...
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