A5040391461- Fire effects on ecosystems
- Species Distribution and Climate Change
- Rangeland and Wildlife Management
- Tree-ring climate responses
- Botany, Ecology, and Taxonomy Studies
- Ecology and Vegetation Dynamics Studies
- Forest ecology and management
- Forest Insect Ecology and Management
- Turfgrass Adaptation and Management
- Yeasts and Rust Fungi Studies
- Geology and Paleoclimatology Research
- Plant and animal studies
- Atmospheric chemistry and aerosols
- Botany and Plant Ecology Studies
- Lichen and fungal ecology
- Wildlife Ecology and Conservation
- Forest Ecology and Biodiversity Studies
- Peatlands and Wetlands Ecology
- Plant responses to elevated CO2
- Wildlife-Road Interactions and Conservation
- Animal and Plant Science Education
- Insect and Arachnid Ecology and Behavior
- Soil and Water Nutrient Dynamics
- Seedling growth and survival studies
- Plant Water Relations and Carbon Dynamics
National Park Service
2008-2024
Cascades (Canada)
2022-2023
National Agency for National Parks
2022
University of Guelph
2022
Oregon State University Cascades
2008
Washington Glass School
1996
University of Washington
1994
Abstract Global biodiversity gradients are generally expected to reflect greater species replacement closer the equator. However, empirical validation of global largely relies on vertebrates, plants, and other less diverse taxa. Here we assess temporal spatial dynamics arthropod using a beta-diversity framework. Sampling includes 129 sampling sites whereby malaise traps deployed monitor changes in communities. Overall, encountered more than 150,000 unique barcode index numbers (BINs) (i.e....
Tree establishment patterns vary considerably at different locations in the subalpine zone of Mount Rainier National Park, with substantial temporal variation regeneration fir (Abies lasiocarpa). Recruitment meadows has been continuous on west side since about 1930, but occurred short, discrete periods east side. Variation snowpack from to mountain a impact climatic factors that limit tree establishment. Warm, dry summer climate facilitates where snowpacks are generally very high; cool, wet...
Abstract Questions: Does tree establishment: (1) occur at a treeline depressed by fire, (2) cause the forest line to ascend upslope, and/or (3) alter landscape heterogeneity? (4) What abiotic and biotic local site conditions are most important in structuring establishment patterns? (5) setting become more with increasing upslope distance from line? Location: Western slopes of Mount Rainier, USA. Methods: We performed classification analysis 1970 satellite imagery 2003 aerial photography...
The U.S. Forest Service (USFS) and National Park (NPS) have highlighted climate change as an agency priority issued direction to administrative units for responding change. In response, the USFS NPS initiated North Cascadia Adaptation Partnership (NCAP) in 2010. goals of NCAP were build inclusive partnership, increase awareness, assess vulnerability, develop science-based adaptation strategies reduce these vulnerabilities. expanded previous science-management partnerships on federal lands a...
Surveys to assess the status of whitebark pine (Pinus albicaulis Engelm.) populations, with respect white blister rust (Cronartium ribicola J.C. Fisch.), were conducted in Mount Rainier National Park and North Cascades Service Complex between 1994 1999. A total 2173 trees 1029 saplings surveyed. Blister was documented every stand, but rates infections highly variable (0% 70%). Overall, 22% infected, 31% dead, 47% all showed no signs infection. (< 2.54 cm dbh) infection 28%, mortality 10%,...
Dispersal of whitebark pine (Pinus albicaulis Engelm.), a keystone species many high-elevation ecosystems in western North America, depends on Clark's nutcracker (Nucifraga columbiana Wilson), seed-caching bird with an affinity for seeds. To the extent that this dependence is mutual, declines seed production could cause abundance. Whitebark decline across much its range due to interacting stressors, including non-native pathogen white blister rust (Cronartium ribicola J. C. Fisch.). We used...
Whitebark pine (Pinus albicaulis Engelm.) is a key component of subalpine and alpine ecosystems in the northern Cascades. The species’ survival threatened by white blister rust, mountain beetle, fire exclusion, climate change. We monitored whitebark permanent plots two national parks three times between 2004 2016. proportion live trees showing evidence rust infection increased North Cascades National Park Service Complex from 32% to 51% 2016 18% 38% Mount Rainier Park. Mortality 7% 21% 44%...
<title>Abstract</title> Global gradients in species biodiversity are expected to reflect tighter packing of closer the equator. Yet, empirical validation these patterns has so far focused on less diverse taxa, with comparable assessments mega-diverse groups historically constrained by taxonomic impediment. Here we assess temporal and spatial turnover dynamics arthropod communities sampled across 129 globally distributed monitoring sites. Overall, encountered more than 150,000 unique BINs...
Plant communities are the foundation for terrestrial trophic webs and animal habitat, their structure species composition an integrated result of biological physical drivers (Gates, 1993). Additionally, they have a major role in geologic, geomorphologic soil development processes (Jenny, 1941; Stevens Walker, 1970). Throughout most Pacific Northwest, environmental conditions support coniferous forests as dominant vegetation type. In face anthropogenic climate change, global potential sinks...
Whitebark pine (Pinus albicaulis) is a long-lived tree found in high-elevation forests of western North America that declining due to the non-native white blister rust (Cronartium ribicola) and climate-driven outbreaks mountain beetle (Dendroctonus ponderosae; MPB). The National Park Service established monitoring program for whitebark seven parks, including Sequoia & Kings Canyon, Yosemite, Lassen Volcanic, Crater Lake, Mount Rainier, Olympic, Cascades Parks. Using these data, we summarized...
Genetic and morphological diversity of Phyllodoce empetriformis (Sw.) D. Don glanduliflora (hook.) Cov. were surveyed in Mount Rainier National Park the Cascade Mountains Washington State. Paired populations at high low elevations sampled three study areas between 1720- 2451-m elevation. Allozyme analysis four polymorphic loci indicates levels genetic within (P. = 94.2% P. 93.4% total diversity) significant differences allele frequencies among areas. Individual are composed multiple clones...
Whitebark pine (Pinus albicaulis Engelm.) is a key component of subalpine and alpine ecosystems in the northern Cascades. The species survival threatened by white blister rust, mountain beetles, fire exclusion, climate change. Trees were monitored permanent plots two national parks three times between 2004 2016. proportion trees showing signs rust infection increased North Cascades National Park Service Complex from 32% to 51% 2016 18% 38% Mount Rainier Park. Mortality 7% 21% 44% Annual...