Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Northwest CASC > FY 2012 Projects > Modeling the Effects of Climate Change on Wetlands in the Pacific Northwest ( Show direct descendants )
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ROOT _ScienceBase Catalog __National and Regional Climate Adaptation Science Centers ___Northwest CASC ____FY 2012 Projects _____Modeling the Effects of Climate Change on Wetlands in the Pacific Northwest Filters
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Abstract (from Ecological Applications): Anthropogenic climate change presents challenges and opportunities to the growth, reproduction, and survival of individuals throughout their life cycles. Demographic compensation among life‐history stages has the potential to buffer populations from decline, but alternatively, compounding negative effects can lead to accelerated population decline and extinction. In montane ecosystems of the U.S. Pacific Northwest, increasing temperatures are resulting in a transition from snow‐dominated to rain‐dominated precipitation events, reducing snowpack. For ectotherms such as amphibians, warmer winters can reduce the frequency of critical minimum temperatures and increase the length...
Abstract (from http://www.sciencedirect.com/science/article/pii/S0034425716300682): Wetlands are valuable ecosystems for maintaining biodiversity, but are vulnerable to climate change and land conversion. Despite their importance, wetland hydrology is poorly understood as few tools exist to monitor their hydrologic regime at a landscape scale. This is especially true when monitoring hydrologic change at scales below 30 m, the resolution of one Landsat pixel. To address this, we used spectral mixture analysis (SMA) of a time series of Landsat satellite imagery to reconstruct surface-water hydrographs for 750 wetlands in Douglas County, Washington State, USA, from 1984 to 2011. SMA estimates the fractional abundance...
Categories: Publication;
Types: Citation;
Tags: Northwest CASC,
Water, Coasts and Ice,
Wetlands,
vegetation,
water,
Abstract (from http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0136385): Wetlands are globally important ecosystems that provide critical services for natural communities and human society. Montane wetland ecosystems are expected to be among the most sensitive to changing climate, as their persistence depends on factors directly influenced by climate (e.g. precipitation, snowpack, evaporation). Despite their importance and climate sensitivity, wetlands tend to be understudied due to a lack of tools and data relative to what is available for other ecosystem types. Here, we develop and demonstrate a new method for projecting climate-induced hydrologic changes in montane wetlands. Using observed wetland...
Categories: Publication;
Types: Citation;
Tags: Northwest,
Northwest CASC,
Water, Coasts and Ice,
Wetlands,
amphibians,
These data are the result of two years of pond-breeding amphibian visual encounter surveys conducted across a range of pond types (from highly ephemeral to permanent hydrology) in Mount Rainier, North Cascades, and Olympic National Parks. The R code includes well-annotated code for reorganizing and sub-setting the master data, which should make it much easier to work with than the raw spreadsheet. Associated hydrologic data may be of use for other research applications. Recognize that this amphibian dataset is tied to (1) hydrologic projections developed using the Variable Infiltration Capacity model, which provides historical reconstructions of hydroperiod for most of 20th century and future hydrologic projections...
Wetlands are widely recognized as important ecosystems that provide critical services for natural communities and human society, including nutrient cycling, wildlife habitat and provisioning, water storage and filtration, carbon sequestration, and agriculture and recreation. Wetlands challenge our current scientific capacity because of their sheer number, their wide range of sizes, and their dynamic nature. As a result, wetlands are understudied compared to other ecosystem types. However, wetlands are thought to be among the most sensitive ecosystems to climate change, so the lack of dedicated scientific resources has accelerating consequences going forward. Our goal in this project was to address the deficiency...
Categories: Publication;
Types: Citation;
Tags: Northwest CASC,
Water, Coasts and Ice,
Wetlands,
amphibians,
wetlands
NPR All Things Considered - Cascades Frogs Facing Climate Change.
Categories: Publication;
Types: Citation;
Tags: NPR,
Northwest CASC,
Water, Coasts and Ice,
Western U.S.,
Wetlands,
Abstract: Wetlands in the remote mountains of the western US have undergone two massive ecological “experiments” spanning the 20th century. Beginning in the late 1800s and expanding after World War II, fish and wildlife managers intentionally introduced millions of predatory trout (primarily Oncorhynchus spp) into fishless mountain ponds and lakes across the western states. These new top predators, which now occupy 95% of large mountain lakes, have limited the habitat distributions of native frogs, salamanders, and wetland invertebrates to smaller, more ephemeral ponds where trout do not survive. Now a second “experiment” – anthropogenic climate change – threatens to eliminate many of these ephemeral habitats...
Categories: Publication;
Types: Citation;
Tags: Northwest CASC,
Water, Coasts and Ice,
Western U.S.,
Wetlands,
amphibians,
This dataset provides point locations of wetlands in the channeled scablands of Washington State. It was created through object based image analysis of high resolution imagery from 2006 and 2009. Each wetland location has an associated surface water hydrograph constructed from spectral mixture analysis of Landsat satellite imagery (1983 – 2011). Hydrologic data is stored in an associated csv file and can be linked to the data through a unique identifier (Wetland_ID). Additionally, individual surface water hydrographs for wetlands, in jpeg format, can be linked to wetland location through the unique identifier.
This dataset delineates wetland ponds and emergent wetland vegetation in Mt. Rainier National Park. It was created through object based image analysis of high resolution imagery from 2006 and 2009 and LiDAR data acquired in the fall of 2008. Riparian wetlands are not included in this dataset. Accuracy is only verified for wetland ponds in the subalpine region. Forested wetlands, riparian wetlands, and emergent vegetation were only visually assessed. This data maps all wetland habitat, but was primarily used to locate and delineate amphibian habitat in Mt. Rainier National Park.
Categories: Data;
Types: Shapefile;
Tags: Mount Rainier National Park,
Mt. Rainier National Park,
North Cascades,
Northwest CASC,
Washington State,
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