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Found 10 records similar to Forest Vegetation - Nahanni
Parks Canada monitors structural change in the spruce forests of Kluane National Park and Reserve following a spruce bark beetle outbreak that began in 1994. Understanding stand development after this landscape-level disturbance will be critical for assessing the resilience of this forest to a disturbance of unprecedented severity. It is also important for monitoring the impact of the outbreak on wildlife habitat and the effects of beetle salvage logging outside of the park on forest development. Sampling is done every 5 years in 50 randomly located permanent sample plots in white spruce dominated mature forests.
Parks Canada monitors vegetation composition in Kluane National Park and Reserve forests to determine resilience following a spruce bark beetle outbreak of unprecedented severity that occurred in the mid 1990’s. Understanding stand development after this landscape-level disturbance will be critical to assessing its effect on wildlife habitat and the impacts of beetle salvage logging outside of the park. Sampling is done every 5 years in 50 randomly located permanent sample plots in white spruce dominated mature forests. Three sub-measures are assessed: 1) Relative dominance of deciduous basal area, 2) percent cover of berry-bearing shrubs, and 3) ratio of willow clumps to tall spruce regeneration.
This bird monitoring program uses both traditional point counts and audio recordings to detect changes and trends in the relative abundance and community composition of a suite of forest bird species within Nahanni National Park Reserve. The intent of this study is to provide an early warning of population declines and changes in the terrestrial ecosystems. Surveys are conducted every year in June.
Vegetation determines primary productivity as well as the diversity and types of habitat available to wildlife species. Alpine vegetation is sensitive to environmental and ecological changes. Park staff measure vascular plant diversity and the relative abundance of major plant life-forms in permanent sample plots. Plots are visited once every five years.
This dataset is associated with the article authored by Jacques Régnière, Lisa Venier and Dan Welsh entitled "Avian predation in a declining outbreak population of the spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae)" which will be published in the "Insects" scientific journal. The impact of avian predation on a declining population of the spruce budworm, Choristoneura fumifereana (Clem. ), was measured using single-tree exclosure cages in a mature stand of balsam fir, Abies balsamea (L.), and white spruce, Picea glauca (Moench.) Voss.
The park assesses expected ranges for each land cover type: successional stages by stand type, area regenerating after natural disturbance (e.g., fire), mature forest, non-forest, wetlands, and waterbodies.
Most songbirds in Kluane National Park and Reserve are medium-distance migrants and could be threatened by habitat degradation along migration routes. Songbirds could also indicate whether Kluane’s forests have recovered essential components of habitat after the extensive spruce bark beetle outbreak in the late 1990s. Point counts for songbirds are conducted twice annually in June in a white spruce dominated forest according to the Alaska Landbird Monitoring Strategy protocol. Birds are identified to species and enumerated by sight and sound
Intensive moose browsing appears to have led to a large reduction in woody plant abundance and diversity in Gros Morne National Park mature forests.This measure assess the biodiversity of native shrubs and tree saplings in the understory of mature balsam fir forest stands. Stems are being enumerated by species in 1x20 m strip transects, 6 of which are sampled at each of 15 sites in forests throughout the 3 ecoregions in GMNP (90 strip transects total). Sampling is carried out every second year, during the months of July to September.
We measured the foliage area, weight and number of buds on young and mature balsam fir and white spruce trees. With these measurements total amounts of foliage per tree and per unit area of forest land can be calculated. These estimates can be used to determine the absolute numbers of insects feeding on these trees, numbers that are important in understanding patterns and fluctuations of population abundance. We also discovered that spruce budworm larvae occur preferentially in buds arranged in clusters.
In PEI National Park tree health and growth are monitored in 20 long-term permanent forest monitoring plots. These plots were established in 2006 in mature white spruce forests under the Ecological Monitoring and Assessment Network (EMAN) program. The measure reports on tree species dominance, recruitment, and growth. Field measurements include species, diameter at breast height (DBH), and tree condition.