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171 results for “home range”
Figure 1 in Home range and foraging habitat selection by breeding lesser kestrels (Falco naumanni) in Greece
Figure 1. Minimum convex polygon home ranges (outer: 100%, interior: 95% of locations) of male (A) and female (B) lesser kestrels during the breeding season in central Greece, 2008.
Data from: Digging deeper: habitat selection within the home ranges of a threatened marsupial
<p>While resource selection varies according to the scale and context of study, gathering data representative of multiple scales and contexts can be challenging especially when a species is small, elusive, and threatened. We explore resource selection in a small, nocturnal, threatened species—the greater bilby (<em>Macrotis lagotis</em>)—to test <strong>(a)</strong> which resources best predict bilby occupancy, and <strong>(b) </strong>whether responses are sex-specific and/or vary over time. We tracked a total of 20 bilbies and examined within home range resource selection over multiple seasons in a large (110ha) fenced sanctuary in temperate Australia. We tested a set of plausible models for bilby resource selection, showing that food biomass (terrestrial and subterranean invertebrates, and subterranean plants) and soil textures (% sand, clay and silt) best predicted bilby resource selection for all sampling periods. Selection was also sex-specific; female resource use, relative to males, was more closely linked to the location of high-quality resources (sandier soils, and terrestrial invertebrate biomass). Bilby selection for roads was independent of season but varied over time with females selecting for areas closer to roads when plants increased in density off roads. Our findings demonstrate the importance of considering resource selection over multiple contexts and highlight a method to collect such data on a difficult to study, threatened species. Collecting such data is critical to understanding the habitat required by species.</p>
Datasets and R codes used for the analyses in "Seasonal variation in home range size of White-Backed Woodpeckers"
<p><strong>Abstract</strong></p> <p>Knowing a species’ area requirements is fundamental for species conservation. For the nominate subspecies of the White-backed Woodpecker<em> Dendrocopos leucotos</em>, a species of high conservation concern in Europe, estimates of the seasonal and year-round area requirements based on telemetry are missing. In the present study, we radio-tracked adult White-backed Woodpeckers in Central Europe and investigated bi-monthly home range sizes based on three home range estimators in relation to season, sex, body weight, and year. Home range size of 49 radio-tracked individuals varied depending on the used home range estimator, with minimum convex polygons (MCP) and autocorrelated kernel density estimation (AKDE) producing 1.6 – 1.8 and 2 – 3.3 times larger seasonal home ranges than traditional kernel density estimation (KDE). Moreover, home range sizes varied between seasons. Home ranges were smallest in February/March (predicted median home range sizes ranged from 35 ha with KDE to 88 ha with AKDE) and April/May (KDE: 30 ha, AKDE: 55 ha) and larger during the rest of the year (KDE: 48 – 67 ha, AKDE: 136 – 184 ha). The mean home range size of six individuals tracked in all seasons (calculated with all locations per individual) was 116 ha with KDE, 304 ha with MCP and 350 ha with AKDE. Our results highlight the importance of considering the full annual cycle when addressing area requirements of White-backed Woodpeckers and likely also of other species. Furthermore, our study shows that using multiple methods for home range estimation may be useful to obtain results that are both comparable with those of other studies and capture the range in which the true home range size is likely to be. For the conservation of the White-backed Woodpecker, we conclude that at least 116 to 350 ha of forest should be present for a pair.</p>
Fig. 4 in Home Ranges Of The Red Fox, Vulpes Vulpes (Carnivora, Canidae) And European Badger, Meles Meles (Carnivora, Mustelidae), In Oak Forests Of Slobozhanshchyna, Ukraine
Fig. 4. Winter average monthly temperatures in Kharkiv City in 2007–2009 and 2011 (http://www.pogodaiklimat.ru).
Fig. 1 in Interspecific Interactions as a Factor of Limitation of Geographical Distribution: Evidence Obtained by Modeling Home Ranges of Vole Twin Species Microtus Arvalis – M. Levis (Rodentia, Microtidae)
Fig. 1. Potential distribution of the Common vole Microtus arvalis. White circles are georeferenced occurrences of genetically identified individuals; black indicates areas of maximum habitat suitability, white are areas of lowest suitability.
No evidence for the consistent effect of supplementary feeding on home range size in terrestrial mammals
<p>Food availability and distribution are key drivers of animal space use. Supplemental food provided by humans can be more abundant and predictable than natural resources. It is thus believed that supplementary feeding modifies the spatial behaviour of wildlife. Yet, such effects have not been tested quantitatively across species. Here, we analysed changes in home range size due to supplementary feeding in 23 species of terrestrial mammals using a meta-analysis of 28 studies. Additionally, we investigated the moderating effect of factors related to i) species biology (sex, body mass, taxonomic group), ii) feeding regimen (duration, amount, purpose), and iii) methods of data collection and analysis (source of data, estimator, spatial confinement). We found no consistent effect of supplementary feeding on changes in home range size. While an overall tendency of reduced home range was observed, moderators varied in the direction and strength of the trends. Our results suggest that multiple drivers and complex mechanisms of home range behaviour can make it insensitive to manipulation with supplementary feeding. The small number of available studies stands in contrast with the ubiquity and magnitude of supplementary feeding worldwide, highlighting a knowledge gap in our understanding of the effects of supplementary feeding on ranging behaviour.</p>
Data from: Home range and habitat selection of wolves recolonising Central European human-dominated landscapes
<p>Decades of persecution has resulted in the long-term absence of grey wolves (<em>Canis lupus</em>) from most European countries. However, recent changes in both legislation and public attitudes toward wolves has eased the pressure, allowing wolves to rapidly re-establish territories in their previous Central European habitats over the last 20 years. Unfortunately, these habitats are now heavily altered by humans. Understanding the spatial ecology of wolves in such highly modified environments is crucial, given the high potential for conflict and the need to reconcile their return with multiple human concerns. We equipped 20 wolves, originating from seven packs in six Central European regions, with GPS collars, allowing us to calculate monthly average home range sizes for 14 of the animals of 213.3 km2 using Autocorrelated Kernel Density Estimation. We then used ESA WorldCover data to assess the mosaic of available habitats used within each home range. Our data confirmed a general seasonal pattern for breeding individuals, with smaller apparent home ranges during the reproduction phase, and no specific pattern for non-breeders. Predictably, our wolves showed a general preference for remote areas, and especially forests, though some wolves within military training areas also showed a broader preference for grassland, possibly influenced by local land use and high availability of prey. Our results provide a comprehensive insight into the ecology of wolves during their re-colonisation of Central Europe. Though wolves are spreading relatively quickly across Central European landscapes, their permanent reoccupation remains uncertain due to conflicts with the human population. To secure the restoration of European wolf populations, further robust biological data, including data on spatial ecology, will be needed to clearly identify any management implications.</p>
Fig. 4 in Spatial Organization And Home Range Of Apodemus Flavicollis And A. Agrarius On Mt. Avala, Serbia
Fig. 4. Least-squared corrected means of observed range length (ORL) values (four possible density combination showing the interaction effects): A = A. flavicollis, B = A. agrarius
Fig. 6 in Spatial Organization And Home Range Of Apodemus Flavicollis And A. Agrarius On Mt. Avala, Serbia
Fig. 6. Correspondence of vegetation cover (a) and capture frequency of both species (b, c) on the grid as an indicator of their habitat preferences
Fig. 1 in Spatial Organization And Home Range Of Apodemus Flavicollis And A. Agrarius On Mt. Avala, Serbia
Fig. 1. Population densities of A. flavicollis (A) and A. agrarius (B) during the study period. The base line indicates arbitrarily defined periods of high versus low density
Fig. 5 in Spatial Organization And Home Range Of Apodemus Flavicollis And A. Agrarius On Mt. Avala, Serbia
Fig. 5. Least-squared corrected means of home range (HR) area (four possible density combination showing the interaction effects): A = A. flavicollis, B = A. agrarius
Figure 5 in Red deer on the move: home range size and mobility in Bulgaria
Figure 5. Comparison between male and female red deer mobility. Boxes – the interquartile range (25-75 percentiles); middle line in boxes – median values; diamonds – average values; whiskers – minimum and maximum values within the 95.0% confidence level; circles – outliers; the perimeter outside boxes shows the probability density of the of the 12 hours step-length displacement in males and females.
Figure 3 in Red deer on the move: home range size and mobility in Bulgaria
Figure 3. Comparison of the core and total area in males and females. Boxes – the interquartile range (25-75 percentiles); middle line in boxes – median values; diamonds – average values; whiskers – minimum and maximum values within the 95.0% confidence level; circles – outliers; circles with plus sign - "Far outside" outliers, points more than 3 times above the interquartile range.
Figure 1. Study area and 100 in Red deer on the move: home range size and mobility in Bulgaria
Figure 1. Study area and 100 % minimum convex polygons from the locations of the GPS-collared red deer
Fig.1 in Home range, movements and activity patterns of an exceptionally large male Brown Bear (Ursus arctos L.) in the area of the Bulgarian-Greek border (Western Rhodope Mts.)
Fig.1. Dominant male (supposed age of at least 15 years old) with scars of battles with rivals. Hunting Forestry Adjilarska (photo from a kamera-trap, D. Bukovsky, 17.03.2014 at a game-feeding station).
Fig 2. A in Home range, movements and activity patterns of an exceptionally large male Brown Bear (Ursus arctos L.) in the area of the Bulgarian-Greek border (Western Rhodope Mts.)
Fig 2. A century-old bear marking tree just on the Bulgarian/Greek border. The tree is marked also with white paint as a border pillar (photo N. Spassov).
Figure 1 in Movement and home range of cinereous vulture Aegypius monachus during the wintering and summering periods in East Asia
Figure 1. Migration route of cinereous vultures (a) VK 1501, (b) VK 1502, (c) VK 1503, (d) VK 1504, (e) VK 1505, (f) VK 1506, (g) VK 1507, and (h) total birds tracked using the GPS-WCDMA-based transmitter in East Asia from January 2015 to March 2017.
Fig. 1 in Home range size and microhabitat selection by a tropical partridge species in moist evergreen forest
Fig. 1. Analysis of green-legged partridges' group range based on radio locations using the characteristic hull polygon (CHP) and minimum convex polygon (MCP; 100%, 95% and 50%) methods. F refers to females, and M refers to males.
Fig. 2 in Home range, habitat use and roost-site selection by lowland female Siamese fireback Lophura diardi in northeastern Thailand
Fig. 2. The variation in home ranges and core areas of the eight female Siamese fireback in 2011 during different reproductive periods, estimated using 95% MCP and CHP Hot Spot methods. Locations shown were the food supplement sites (1 and 2) and nesting sites during the breeding season.
Fig. 3 in Home range, habitat use and roost-site selection by lowland female Siamese fireback Lophura diardi in northeastern Thailand
Fig. 3. The occurrence probability of Siamese fireback in relation to habitat variables. Shown are predicted values and 95% confidence limits for breeding (black solid lines) and non-breeding (gray dashed lines) periods.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.