Biology Agriculture Aquaculture Horticulture Postharvest Forestry Geography Environment Health





Habitat characteristics associated with wolverine den sites in Norwegian multiple-use landscapes

submitted by presteni 2 years and 5 months ago
Successful wolverine (Gulo gulo) reproduction, and thereby population viability especially in multiple-use landscapes, is likely to be enhanced by availability of suitable den sites. We investigated which topographic features were selected for reproductive den sites by female wolverines in southern Norway (2–26) at three spatial scales (landscape, home-range and site-specific scales). At the site-specific scale, den sites were associated with steep, rugged terrain with bare rock. At the home-range and landscape scales, den sites were placed in rugged terrain at 11 m a.s.l. and away from infrastructure (private roads and public roads). These features provide snowdrifts into which wolverines can excavate dry, safe cavities. Den sites were also placed away from infrastructure, indicating that den-site distribution, and possibly successful reproduction, may be partly influenced by human activities. Recurrent use of specific topographic features may provide valuable information for guiding geographically differentiated management and monitoring efforts, and augmenting recovery of endangered wolverine populations.


Topic: Biology

Add your comment

Please Login or Signup to leave a comment

Related stories

Effects of Coastal Urbanization on Salt-Marsh Faunal Assemblages in the Northern Gulf of Mexico
submitted by 957896 2 months ago - Topic: Agriculture
Coastal landscapes in the northern Gulf of Mexico, specifically the Mississippi coast, have undergone rapid urbanization that may impact the suitability of salt-marsh ecosystems for maintaining and regulating estuarine faunal communities. We used a landscape ecology approach to quantify the composition and configuration of salt-marsh habitats and developed surfaces at multiple spatial scales su...

Landscape alterations influence differential habitat use of nesting buteos and ravens within sagebrush ecosystem: Implications for transmission line development
submitted by irecoggriy 1 month ago - Topic: Biology
A goal in avian ecology is to understand factors that influence differences in nesting habitat and distribution among species, especially within changing landscapes. Over the past 2 decades, humans have altered sagebrush ecosystems as a result of expansion in energy production and transmission. Our primary study objective was to identify differences in the use of landscape characteristics and n...



Spatial Scaling of Prevalence and Population Variation in Three Grassland Sparrows
submitted by irecoggriy 1 year and 4 months ago - Topic: Biology
Henslow's Sparrows (Ammodramus henslowii) are distributed in tallgrass prairies in central North America; however, this species is restricted further to specific habitats within these prairies—large expanses with relatively little woody vegetation but an accumulation of standing grasses and forbs, conditions that result from infrequent disturbances by fire, mowing, or grazing. Henslow's Sparr...

Ecological and biological determination of invasion success of non-native plant species in urban woodlands with special regard to short-lived monocarps
submitted by larrindosl 1 year and 3 months ago - Topic: Biology
Today’s urban green space is exposed to a constant flow of newly introduced exotic plant species, resulting from multiple, intentional and inadvertent introductions. A substantial share of introduced plant species are represented by potential invaders of plant communities, which allows considering that the risk of rapid dispersion by aggressive plant species to be today’s most serious threa...


A multiple-scale analysis of host plant selection in Lepidoptera
submitted by rohmon 1 year and 2 months ago - Topic: Biology
Lepidoptera play an important role in terrestrial ecosystems as pollinators, as components of the food chain and as indicators for healthy ecosystems due to their sensitivity to change. Heterogeneous landscapes with variability of topographical features, vegetation structure combined with food sources for all life stages are the basis for successful lepidopteran oviposition. A multiple-scale an...

Determinants of extinction-colonization dynamics in Mediterranean butterflies: the role of landscape, climate and local habitat features
submitted by hagh 1 year and 1 month ago - Topic: Biology
Many species are found today in the form of fragmented populations occupying patches of remnant habitat in human-altered landscapes. The persistence of these population networks requires a balance between extinction and colonization events assumed to be primarily related to patch area and isolation, but the contribution of factors such as the characteristics of patch and matrix habitats, the sp...


Lidar-Derived Canopy Architecture Predicts Brown Creeper Occupancy of Two Western Coniferous Forests
submitted by irecoggriy 11 months ago - Topic: Biology
In western conifer-dominated forests where the abundance of old-growth stands is decreasing, species such as the Brown Creeper (Certhia americana) may be useful as indicator species for monitoring the health of old-growth systems because they are strongly associated with habitat characteristics associated with old growth and are especially sensitive to forest management. Light detection and ran...

Lidar-Derived Canopy Architecture Predicts Brown Creeper Occupancy of Two Western Coniferous Forests (La Arquitectura del Dosel Derivada de Lidar Predice la Ocupación de Certhia americana de Dos Bosques de Coníferas del Oeste)
submitted by jinneni 9 months ago - Topic: Biology
In western conifer-dominated forests where the abundance of old-growth stands is decreasing, species such as the Brown Creeper (Certhia americana) may be useful as indicator species for monitoring the health of old-growth systems because they are strongly associated with habitat characteristics associated with old growth and are especially sensitive to forest management. Light detection and ran...


Habitat Differentiation within the Large-Carnivore Community of Norway's Multiple-Use Landscapes
submitted by girold 7 months ago - Topic: Biology
The re-establishment of large carnivores in Norway has led to increased conflicts and the adoption of regional zoning for these predators. When planning the future distribution of large carnivores, it is important to consider details of their potential habitat tolerances and strength of inter-specific differentiation. We studied differentiation in habitat and kill sites within the large-carnivo...

Multiscale nest site selection by Burrowing Owls in western South Dakota
submitted by drroe 7 months ago - Topic: Biology
Grassland bird species frequently respond to habitat characteristics at multiple spatial scales when selecting nest sites. The Western Burrowing Owl (Athene cunicularia hypugaea) is a grassland bird species of conservation concern across much of its range, but most studies of its habitat needs have been restricted to relatively small geographical areas and have not integrated multiple spatial s...