North Cascades National Park Service Complex: Natural resource condition assessment
Hoffman RL, Woodward A, Haggarty P, Jenkins K, Griffin P, Adams MJ, Hagar J, Cummings T, Driscoe D, Kopper K, Riedel J, Marin L, Mauger GS, Bumbaco K, Littell JS. 2015. North Cascades National Park Service Complex: Natural resource condition assessment. Natural Resource Report. NPS/NOCA/NRR—2015/901. National Park Service. Fort Collins, Colorado
Natural Resource Condition Assessments (NRCAs) evaluate current conditions for a suite of natural resources and indicators in national parks. NRCAs also report trends in resource condition (when possible), identify data gaps, and characterize level of confidence for findings. The resources and indicators emphasized depend on a park’s resource setting, status of resource stewardship planning and science in identifying high-priority indicators, and availability of data and expertise to assess condition of potential resources and indicators. Following the 2010 NRCA scoping workshop, available data, reports, and references pertinent to each of 11 natural resource categories (air quality, amphibians, fish, glaciers, landbirds, mammalian fauna, night skies, soundscapes, vegetation, water quality---lentic, and water quality---lotic) were collected from NOCA staff. Resource assessors determined how the condition of a resource could best be assessed and gathered references and documentation to support the metrics and reference conditions chosen to complete the assessment. 14 focal natural resources and their assessment categories were identified. 17 of 20 natural resource categories for which disturbance-level and condition was assessed had signs of moderate to significant degradation, and 6 of these categories were estimated to be significantly disturbed (Nitrogen and Sulfur Deposition, Persistent Bioaccumulative Toxics, Forest Health–Disturbance Regime, Whitebark Pine and White Pine Blister Rust, Exotic Plants, and Glaciers). Five resources (Biodiversity–Wetlands, Mammalian Fauna, Mammalian Carnivores, Hoary Marmots–American Pika, and Bats) lacked sufficient data to estimate disturbance and condition. Although only 6 resource categories were assessed as seriously disturbed, many NOCA resources are susceptible to disturbance and change due to anthropogenic sources, especially climate change. Climate change is threat to aquatic ecosystems, with potential to degraded water quality due to changing precipitation and temperature regimes. NOCA lake and stream water quality, including native biota, will be affected and potentially degraded by climate-induced stress. Direct and indirect effect of climate change on birds is expected, although predictability of specific effects is low due to complexity of interacting factors. Changing temperature and precipitation regimes are expected to affect distribution/structure of plant communities that provide important food and cover for birds in NOCA. Climate change is expected to affect bird species presence and distribution. Projections of change in spatial distribution and vulnerability of plant communities and species due to climate change agree that subalpine and alpine communities and species will decline or disappear, and wetland communities will be vulnerable. NOCA may experience increases in area burned by wildfires and fire season will be longer, as summer temperatures are expected to increase and snowpacks decrease. Four fundamental threats that currently (and will in the future) affect persistence and viability of natural resources of NOCA were identified: climate change; atmospheric deposition of nutrients and pollutants; presence and emergence of pests and pathogens; and introduction and range expansion of non-native and non-resident native and plant and animal species.
- Type
- Published Report
- Authors
- Hoffman, Robert; Woodward, Andrea; Haggarty, Patrica; Jenkins, Kurt; Griffin, Paul; Adams, Michael; Hagar, Joan; Cummings, Tonnie; Driscoe, Dan; Kopper, Karen; Riedel, Jon; Marin, Lelaina; Mauger, Guillaume; Bumbaco, Karen; Littell, Jeremy
- Date of Issue
- 2015-01
- Publisher
- National Park Service
- Units
- NCCN , NOCA , NRSS , WRD
- Subjects
- Ecological Framework: Air and Climate | Air Quality | Wet and Dry Deposition , Ecological Framework: Air and Climate | Air Quality | Air Contaminants , Ecological Framework: Air and Climate | Weather and Climate | Weather and Climate , Ecological Framework: Water | Hydrology | Surface Water Dynamics , Ecological Framework: Water | Water Quality | Water Chemistry , Ecological Framework: Water | Water Quality | Nutrient Dynamics , Ecological Framework: Water | Water Quality | Toxics , Ecological Framework: Water | Water Quality | Aquatic Macroinvertebrates and Algae , Ecological Framework: Biological Integrity | Invasive Species | Invasive/Exotic plants , Ecological Framework: Biological Integrity | Invasive Species | Invasive/Exotic animals , Ecological Framework: Biological Integrity | Focal Species or Communities | Forest/Woodland Communities , Ecological Framework: Biological Integrity | Focal Species or Communities | Fishes , Ecological Framework: Biological Integrity | Focal Species or Communities | Amphibians and Reptiles , Ecological Framework: Biological Integrity | Focal Species or Communities | Birds , Ecological Framework: Biological Integrity | Focal Species or Communities | Mammals , Ecological Framework: Landscapes | Soundscape | Soundscape , Ecological Framework: Landscapes | Viewscape | Viewscape/Dark Night Sky