Filters: Tags: alpine lakes (X)
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In May 2014, the GNLCC Steering Committee approved two pilot projects explore approaches to landscape-scale coordination to enhance science-based management across the GNLCC. The two ‘Shared Landscape Outcomes’ pilots were designed to assess and focus on specific pairs of a GNLCC Goal and a priority landscape stressor as defined in the Strategic Conservation Framework and focus the approach at the entire GNLCC scale. The two pilot projects focused on (1) the Aquatic Integrity goal and Invasives stressor (described here) and (2) the Connectivity goal and Land Use Change stressor (see: http://greatnorthernlcc.org/PTS/prj_report.html?PRJ_ID=389)AIS Pilot:The challenge of managing for invasive species creates an opportunity...
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alpine Lakes,
Aquatic Connectivity,
Cascadia,
Columbia Basin,
Decision Support,
Using an estimated background nitrogen (N) deposition value of 0.5 kg N-ha-^yr"1 in 1900, and a 19-year record of measured values from Loch Vale (Colorado, USA; NADP site CO98), I reconstructedan N-deposition history using exponential equations thatcorrelatedwellwithEPA-reportedNO*emissionsfromColoradoandfromthesumof emissions of 11 western states. The mean wet N-deposition values for the period 1950-1964 was -1.5 kg Nha'^yr"1, corresponding to the reported time of alteration of diatom assemblages attributed to N deposition in alpine lakes in Rocky Mountain National Park (USA). This value becomes the critical load defining the threshold for ecological change from eutrophication. Thus if an N-deposition threshold...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Colorado,
Ecological Applications,
Loch Vale,
Rocky Mountain National Park,
USA,
Recent sediments from two alpine lakes (> 3300 m asl) in the Colorado Front Range (USA) register marked and near-synchronous changes that are believed to represent ecological responses to enhanced atmospheric deposition of fixed nitrogen from anthropogenic sources. Directional shifts in sediment proxies include greater representations of mesotrophic diatoms and increasingly depleted d15N values. These trends are particularly pronounced since ~ 1950, and appear to chronicle lake responses to excess N derived from agricultural and industrial sources to the east. The rate and magnitude of recent ecological changes far exceed the context of natural variability, as inferred from comparative analyses of a long core capturingthe...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Colorado,
Journal of Paleolimnology,
Springer Netherlands,
alpine lakes,
atmospheric deposition,
Atmospheric nitrogen (N) deposition to lakes and watersheds has been increasing steadily due to various anthropogenic activities. Because such anthropogenic N is widely distributed, even lakes relatively removed from direct human disturbance are potentially impacted. However, the effects of increased atmospheric N deposition on lakes are not well documented. We examined phytoplankton biomass, the absolute and relative abundance of limiting nutrients (N and phosphorus [P]), and phytoplankton nutrient limitation in alpine lakes of the Rocky Mountains of Colorado (USA) receiving elevated (>6 kg N�ha?1�yr?1) or low (<2 kg N�ha?1�yr?1) levels of atmospheric N deposition. High-deposition lakes had higher NO3-N and total...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Colorado (USA),
Ecological Society of America,
Ecology,
Rocky Mountains,
alpine lakes,
Montana Department of Fish, Wildlife and Parks (MTFWP) has been involved with developing a crucial areas statewide Decision Support System (DSS) since 2008 in parallel with activities from the Western Governors Association (WGA). In April, 2010, the Crucial Areas Planning System (CAPS) was released. Also in 2010, the WGA provided funding to the 18 western states to begin developing DSSs for crucial areas among and between the 18 western states. MTFWP will be piloting a transboundary DSS for fish, wildlife, and habitats along the Idaho-Montana Divide, beginning in July 2010. MTFWP will also participating in a dual role of advisory and collaboration with the Washington, Oregon and Idaho Columbia Plateau pilot project.This...
Categories: Data,
Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alberta,
Alpine,
Alpine Lakes,
Applications and Tools,
British Columbia,
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