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This data set contains decomposition rates for litter of Salicornia pacifica, Distichlis spicata, and Deschampsia cespitosa buried at 7 tidal marsh sites in 2015. Sediment organic matter values were collected at a subset of sites. These data support the following publication: Janousek, C.N., Buffington, K.J., Guntenspergen, G.R. et al. Ecosystems (2017). doi:10.1007/s10021-017-0111-6. http://link.springer.com/article/10.1007/s10021-017-0111-6
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This data table contains mean decomposition rates and mean carbon:nitrogen ratios for different litter types buried in 7 marshes during 2015. Note that C:N data are repeated for low and high marsh areas at each site in the table. These data support the following publication: Janousek, C.N., Buffington, K.J., Guntenspergen, G.R. et al. Ecosystems (2017). doi:10.1007/s10021-017-0111-6. http://link.springer.com/article/10.1007/s10021-017-0111-6
Dynamic tidal export of dissolved inorganic carbon (DIC) to the coastal ocean from highly productive intertidal marshes and its effects on seawater carbonate chemistry are thoroughly evaluated. The study uses a comprehensive approach by combining tidal water sampling of CO2parameters across seasons, continuous in situ measurements of biogeochemically-relevant parameters and water fluxes, with high-resolution modeling in an intertidal salt marsh of the U.S. northeast region. Salt marshes can acidify and alkalize tidal water by injecting CO2 (DIC) and total alkalinity (TA). DIC and TA generation may also be decoupled due to differential effects of marsh aerobic and anaerobic respiration on DIC and TA. As marsh DIC...
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Description of condition index value scores for estuarine tidal marsh along and within 10 km of the GCPO LCC Gulf Coast subgeography. A series of raster calculations were used in a dichotomous decision-based framework to compile a per-pixel draft condition index value at a 10 m resolution for GCPO estuarine tidal marsh based on the number of configuration and condition endpoints met within each marsh pixel. Pixels not identified as a estuarine marsh but that were identified as having the potential to be marsh were given a score of 1, provided the pixels were not classified as developed. Potential estuarine tidal marsh pixels were derived from a combination of potential estuarine tidal marsh classes in the Landfire...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: AQUATIC ECOSYSTEMS, AQUATIC ECOSYSTEMS, BIOSPHERE, BIOSPHERE, BIOSPHERE, All tags...
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This data release is comprised of tidal marsh biomass data and spatial predictions of peak biomass and Julian day of peak biomass using data from the Landsat archive. Aboveground biomass dry weight of mixed-species plots (25x50 cm) at a tidal marsh in Willapa Bay, Washington were used to establish a relationship between biomass and tasseled cap greeness (TCG). The julian day of annual peak greenness and the value of annual peak greenness for 32 years at Bandon National Wildlife Refuge (NWR), Grays Harbor NWR, and Nisqually NWR was calculated by fitting a Gaussian function to the TCG values for a given year. The value of each 30 meter pixel is the Julian day of maximum predicted TCG or the maximum predicted TCG....
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This data table contains results for the 2014 mesocosm tests of inundation effects on decomposition. These data support the following publication: Janousek, C.N., Buffington, K.J., Guntenspergen, G.R. et al. Ecosystems (2017). doi:10.1007/s10021-017-0111-6. http://link.springer.com/article/10.1007/s10021-017-0111-6
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Tidal marshes serve a variety of important functions valued by Maine communities. Unfortunately, tidal marsh habitats are highly vulnerable to damage or loss from sea level rise. Scientists expect marsh habitats will be more frequently flooded in the future and marsh vegetation lost or significantly altered as a result. Salt marshes do, however, have the ability to ‘migrate’ landward with sea level rise-induced changes in shoreline position. The potential and ability for marsh migration is crucial to sustaining these important ecosystems and their functions for the future.Recognizing this, and with financial support from the North Atlantic Landscape Conservation Collaborative (NALCC) and other sources, a team of...
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Emergent tidal marsh derived from National Wetlands Inventory
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This data table contains summary data for temperature time series in near-surface sediments in high and low tidal marsh at 7 sites during 2015. These data support the following publication: Janousek, C.N., Buffington, K.J., Guntenspergen, G.R. et al. Ecosystems (2017). doi:10.1007/s10021-017-0111-6. http://link.springer.com/article/10.1007/s10021-017-0111-6
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This table contains data on dry mass remaining in a subset of Salicornia pacifica and Deschampsia cespitosa litter bags removed over a series of time points spanning 6 months. These data support the following publication: Janousek, C.N., Buffington, K.J., Guntenspergen, G.R. et al. Ecosystems (2017). doi:10.1007/s10021-017-0111-6. http://link.springer.com/article/10.1007/s10021-017-0111-6
The coastal region of California supports a wealth of ecosystem services including habitat provision forwildlife and fisheries. Tidal marshes, mudflats, and shallow bays within coastal estuaries link marine,freshwater and terrestrial habitats, and provide economic and recreational benefits to local communities.Climate change effects such as sealevelrise (SLR) are altering these habitats, but we know little abouthow these areas will change over the next 50–100 years. Our study examined the projected effects of threerecent SLR scenarios produced for the West Coast of North America on tidal marshes in California. Wecompiled physical and biological data, including coastal topography, tidal inundation, plant composition,and...
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Draft 2 of the summary report for ecological assessment of estuarine tidal marsh systems along the GCPO LCC Gulf Coast subgeography. This includes an assessment of landscape endpoints identified by the GCPO Adaptation Science Management Team in the draft GCPO LCC Integrated Science Agenda.The estuarine tidal marsh priority system in the Gulf Coastal Plains and Ozarks LCC (GCPO LCC) Integrated Science Agenda (ISA) includes general ecological systems of brackish/saltwater marsh and seagrass beds and was adopted as one of two initial ecological systems of focus for the Gulf Coast subgeography of the GCPO LCC (the other being beaches and dunes). The desired ecological state for Gulf Coast estuarine tidal marsh is a...
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BIOSPHERE, BIOSPHERE, BIOSPHERE, BIOSPHERE, COASTAL, All tags...
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Decomposition of plant matter is one of the key processes affecting carbon cycling and storage in tidal wetlands. In this study, we evaluated the effects of factors related to climate change (temperature, inundation) and vegetation composition on rates of litter decay in seven tidal marsh sites along the Pacific coast. In 2014 we conducted manipulative experiments to test inundation effects on litter decay at Siletz Bay, OR and Petaluma marsh, CA. In 2015 we studied decay of litter in high and low elevation marshes at seven Pacific coast sites. These data support the following publication: Janousek, C.N., Buffington, K.J., Guntenspergen, G.R., Thorne, K.M., Dugger, B.D. and Takekawa, J.Y., 2017. Inundation, vegetation,...
We performed plant removal (devegetation) experiments across a suite of ecologically diverse wetland settings (tidal salt marshes, river floodplain, rotational rice fields, and freshwater wetlands with permanent or seasonal flooding) to determine the extent to which the presence (or absence) of actively growing plants influences the activity of the Hg(II)-methylating microbial community and the availability of Hg(II) to those microbes. Vegetated control plots were paired with neighboring devegetated plots in which photosynthetic input was terminated 4–8 months prior to measurements, through clipping aboveground biomass, severing belowground connections, and shading the sediment surface to prevent regrowth. Across...
Categories: Publication; Types: Citation; Tags: floodplain, mercury, plant, rice, tidal marsh
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Percent Tidal Wetlands derived from the National Wetlands Inventory Dataset by HUC 12
This project brought together natural resource managers, conservation coordinators and planners, and scientists working at multiple scales within the San Francisco Bay to develop a spatially-explicit decision framework that cuts across jurisdictional boundaries while accounting for uncertainties about climate change. In particular, the SDM framework allows managers within the Bay to identify a recommended strategy among a set of alternative strategies that may vary among its subregions (e.g. North Bay, South Bay, East Bay). Management priorities will be those that yield the greatest expected conservation benefits across the Bay considering multiple objectives including endangered species recovery (e.g. California...
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This report describes a project to use the Sea Level Affecting Marshes Model (SLAMM) to identify potential responses of Connecticut’s coastal marshes and adjacent upland areas to anticipated increases in mean-tide water level elevations in Long Island Sound (LIS) and Connecticut’s estuarine embayments, updated from an earlier effort from 2013-2014 .
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Description of condition index value scores for estuarine tidal marsh along and within 10 km of the GCPO LCC Gulf Coast subgeography. A series of raster calculations were used in a dichotomous decision-based framework to compile a per-pixel draft condition index value at a 10 m resolution for GCPO estuarine tidal marsh based on the number of configuration and condition endpoints met within each marsh pixel. Pixels not identified as a estuarine marsh but that were identified as having the potential to be marsh were given a score of 1, provided the pixels were not classified as developed. Potential estuarine tidal marsh pixels were derived from a combination of potential estuarine tidal marsh classes in the Landfire...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BIOSPHERE, BIOSPHERE, BIOSPHERE, BIOSPHERE, BIOSPHERE, All tags...
Please cite as: Anderson, M.G. and Barnett, A. 2017. Resilient Coastal Sites for Conservation in the Northeast and Mid-Atlantic US. The Nature Conservancy, Eastern Conservation Science.View the interactive map, download the data, and read the report at:https://www.nature.org/resilientcoastsNearly half of all Americans live and work in coastal counties, areas that also provide critical habitat for a diversity of fish and wildlife. However, the capacity for these places to support human and natural communities in the face of rising sea levels varies widely. In response to this threat, scientists from The Nature Conservancy evaluated more than 10,000 coastal sites in the Northeast and Mid-Atlantic to determine their...


map background search result map search result map Tidal Emergent Marsh in the GCP LCC from NWI GCP LCC Percent Tidal Wetlands Area by HUC 12 (NWI) - DRAFT Condition Index Value for GCPO LCC Estuarine Tidal Marsh Barcode Value for GCPO LCC Estuarine Tidal Marsh GCPO LCC Ecological Assessment of Gulf Coast Estuarine Tidal Marsh [DRAFT 2] Decomposition of plant litter in Pacific coast tidal marshes, 2014-2015 Inundation Experiments, 2014 Decomposition rates and carbon:nitrogen ratios for different litter types, 2015 Litter Decomposition Rates, 2015 Sediment Temperature, 2015 Linear loss of litter over time, 2015 Data for climate-related variation in plant peak biomass and growth phenology across Pacific Northwest tidal marshes Advancing Existing Assessment of Connecticut Marshes’ Response to Sea-Level Rise Integrating Science into Policy: Local Adaptation for Marsh Migration Advancing Existing Assessment of Connecticut Marshes’ Response to Sea-Level Rise Data for climate-related variation in plant peak biomass and growth phenology across Pacific Northwest tidal marshes Integrating Science into Policy: Local Adaptation for Marsh Migration Decomposition of plant litter in Pacific coast tidal marshes, 2014-2015 Inundation Experiments, 2014 Decomposition rates and carbon:nitrogen ratios for different litter types, 2015 Litter Decomposition Rates, 2015 Sediment Temperature, 2015 Linear loss of litter over time, 2015 Tidal Emergent Marsh in the GCP LCC from NWI GCPO LCC Ecological Assessment of Gulf Coast Estuarine Tidal Marsh [DRAFT 2] Condition Index Value for GCPO LCC Estuarine Tidal Marsh Barcode Value for GCPO LCC Estuarine Tidal Marsh GCP LCC Percent Tidal Wetlands Area by HUC 12 (NWI) - DRAFT