Filters: Tags: boreal forest (X) > Types: OGC WMS Service (X)

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Distribution of caribou and wolves in relation to linear corridors Conclusions: Caribou mortalities attributed to wolf predation were generally closer to a corridor, indicating that linear corridors may enhance wolf predation efficiency. Therefore, caribou existing closer to linear corridors are at a higher risk of depredation than those farther from corridors. Thresholds/Learnings: Synopsis: This study tested the hypothesis that linear corridors affect caribou and wolf activities by examining the distribution of telemetry locations of caribou and wolves, as well as locations of caribou mortality and caribou predation by wolves relative to linear corridors caused by roads, seismic lines, power lines, and pipeline rights-of-way. Caribou mortalities attributed to wolf predation... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alberta, Canis lupus, Human disturbance, Hunting, Industrial, All tags... Land use configuration, Landscape fragmentation, Linear Disturbance, Linear corridors, Mid-boreal Uplands, Mortality, Peace-Wabaska lowlands, Pipelines, Predation, Rangifer tarandus caribou, Roads, Seismic lines, Woodland caribou, boreal forest, caribou, predation, sub-regional, terrestrial mammals, wolves, Fewer tags Chronic industrial noise affects pairing success and age structure of ovenbirds Seiurus aurocapilla. Conclusions: There was a significant reduction in ovenbird pairing success at compressor sites (77%) compared with noiseless wellpads (92%). These differences were apparent regardless of territory quality or individual male quality. Noise interferes with a male's song, such that females may not hear the male's song at greater distances and/or females may perceive males to be of lower quality because of distortion of song characteristics Thresholds/Learnings: Synopsis: Anthropogenic noise is rapidly increasing in wilderness areas as a result of industrial expansion. This study assessed pairing success and age distribution of male ovenbirds, Seiurus aurocapilla, in the boreal forest of Alberta, Canada, in areas around... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Land use configuration, Landscape fragmentation, Northern Alberta, age structure, birds, All tags... boreal forest, compressor stations, energy development, industrial impacts, noise, noise impacts, ovenbird, ovenbird, pairing success, regional, Fewer tags Distribution of bark beetle, Trypodendron lineatum in a harvested landscape Synopsis: This study monitored the response of a species of pine bark beetle, Trypodendron lineatum, to direct and indirect measures of habitat availability in a forest subjected to various levels of harvest intensities. Four stand types (conifer dominated, mixed, deciduous dominated, and deciduous dominated with conifer understory) were treated with four levels of harvest intensity (unharvested, 50%, 80%, and 90% harvested). Prior to harvest, the pine bark beetle was most abundant in stands with many host trees (conifer dominated stands). In the first and second summers after harvest, pine beetle abundance increased exponentially with percent spruce cover and the number of spruce stumps in the stand. Beetles were... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alberta, Land use configuration, Landscape fragmentation, Natural cover amount, Natural cover heterogeneity, All tags... Peace/Wabaska lowlands, Trypodendron lineatum, boreal forest, conifer forest, ecosystem intactness, mid-boreal uplands, percent cover, perforation, resource concentration hypothesis, sub-regional, terrestrial micro-fauna, timber harvest, Fewer tags Movement Patterns, Dispersal Behavior, and Survival of Lynx in Relation to Snowshoe Hare Abundance in the Boreal Forest The role of lynx dispersal in maintaining their populations at the landscape scale is unclear. A large proportion of local lynx populations are known to disperse following a snowshoe hare population crash, but whether these dispersal events contribute to the cyclic dynamics of neighboring populations is not well understood. If lynx dispersal does play an important role in lynx population dynamics then the conservation of dispersal corridors is critical to maintaining those dynamics. However, we currently have no information on the habitat requirements of dispersing lynx in relation to human land use, such as housing developments, road building, timber harvest, and mining, all of which could have a substantial impact... Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BIOSPHERE, BIOSPHERE, BOREAL FOREST/TIAGA, EARTH SCIENCE, EARTH SCIENCE, All tags... EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS, ECOLOGICAL DYNAMICS, ECOSYSTEMS, Earth Remote Sensing Instruments, Earth Remote Sensing Instruments, FORESTS, Lepus americanus, Lynx canadensis, Passive Remote Sensing, Passive Remote Sensing, Positioning/Navigation, Positioning/Navigation, Project, Radio, SPECIES/POPULATION INTERACTIONS, TELEMETER, TERRESTRIAL ECOSYSTEMS, alaska, biota, boreal forest, canada lynx, dispersal, environment, movement, onGoing, snowshoe hare, survival, telemetry, trapping, Fewer tags Fragments are not islands: patch vs landscape perspectives on songbird presence and abundance in a harvested boreal forest. Conclusions: In response to logging, songbirds demonstrated “habitat compensation” by moving into different adjacent habitats across a fragmented landscape. Thresholds/Learnings: Synopsis: This study investigates the degree to which species respond differently to logging across different scales in Alberta’s boreal mixed-wood forests. Researchers tracked changes in the composition and abundance of songbirds at the patch-level and landscape level, finding significant variation between the two spatial scales. The results suggest that predictions of organism response based on the island biogeographic model are limited, and that—while responses varied across species—songbirds demonstrated “habitat compensation” by moving... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alberta, Land use configuration, Landscape fragmentation, Natural cover amount, birds, All tags... boreal forest, boreal forest, forest fragmentation, island biogeography, local/site, logging, logging, songbird abundance, spatial scale, timber harvest, Fewer tags Modeling and field-testing of Ovenbird (Seiurus aurocapillus) responses to boreal forest dissection by energy sector development at multiple spatial scales. Conclusions: Increasing seismic line density from 0 to 8 km/km2 resulted in a 38% decline and an 82% decline in bird abundance when individuals used lines as territory boundaries or avoided edges by 50 m, respectively. When tested with ovenbirds, male ovenbirds showed a distinct use of one side of the seismic line, suggesting lines acted as territory boundaries. Ovenbirds declined with seismic line density when a threshold seismic line density of 8.5 km/km2 was reached. Above the threshold, Ovenbirds declined 19% for each 1 km/km2 increase in seismic line density. Thresholds/Learnings: Synopsis: In the boreal plains of Alberta, Canada, energy sector exploration has resulted in extensive dissection of the landscape... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Land use configuration, Landscape fragmentation, Northern Alberta, bird abundance, birds, All tags... boreal forest, edge effects, energy development, energy sector, landscape dissection, ovenbird, ovenbird, regional, seismic lines, seismic lines, Fewer tags Changes in bird communities in boreal mixedwood forest: harvest and wildfire effects over 30 years. The study examined the effects of forest harvest practices that approximate natural disturbance processes to evaluate whether these practices help conserve biodiversity. Past research has shown that management practices that mimic natural disturbance events such as forest fires is a successful habitat conservation strategy, particularly for boreal forest bird communities. The study investigated how bird communities differed between postharvest and postfire stands in the mid-boreal region of Alberta. The research found that the most significant difference between postfire and postharvest landscapes is the amount and orientation of residual live and dead trees. Postfire stands consist largely of standing dead trees... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Natural cover amount, Northern Alberta, birds, boreal forest, forest fire, All tags... postfire, regional, snag densities, Fewer tags