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601 results for “habitat diversity”
Minimum habitat thresholds required for conserving mountain lion genetic diversity
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Habitat diversity influences puma (Puma concolor) diet in the Chihuahuan Desert
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Data from: Habitat connectivity and local conditions shape taxonomic and functional diversity of arthropods on green roofs
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Human-induced habitat fragmentation effects on connectivity, diversity and population persistence of an endemic fish, Percilia irwini, in the Biobío river basin (Chile)
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Data from: Robustness of habitat-based surrogates of animal diversity: a multi-taxa comparison over time
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Figure 1 in Abundance, species richness and diversity of the orb-weaving spider families Araneidae, Nephilidae and Tetragnathidae in natural habitats in Trinidad, West Indies
Figure 1. Map of Trinidad showing the location of sampling localities of natural habitats.
Data from: The effects of habitat management on the species, phylogenetic and functional diversity of bees are modified by the environmental context
Anthropogenic landscape elements, such as roadsides, hedgerows, field edges, and power line clearings, can be managed to provide important habitats for wild bees. However, the effects of habitat improvement schemes in power line clearings on components of diversity are poorly studied. We conducted a large-scale experiment to test the effects of different management practices on the species, phylogenetic, and functional diversity of wild bees in power line clearings (n = 19 sites across southeastern Norway) and explored whether any treatment effects were modified by the environmental context. At each site, we conducted the following treatments: (1) Cut: all trees cut and left to decay in the clearing; (2) Cut + Remove: all trees cut and removed from the plot; and (3) Uncut: uncleared. The site-specific environmental context (i.e., elevation and floral diversity) influenced the species, phylogenetic, and functional diversity within bee species assemblages. The largest number of species was found in the Cut + Remove treatment in plots with a high forb species richness, indicating that the outcome of management practices depends on the environmental context. Clearing of treatment plots with many forb species also appeared to alter the phylogenetic composition of bee species assemblages, that is, more closely related species were found in the Cut and the Cut + Remove plots than in the Uncut plots. Synthesis and applications: Our experimental simulation of management practices in power line clearings influenced the species, phylogenetic, and functional diversity of bee species assemblages. Frequent clearing and removal of the woody debris at low elevations with a high forb species richness can increase the value of power line clearings for solitary bees. It is therefore important for managers to consider the environmental context when designing habitat improvement schemes for solitary bees.
Data from: Cryptic habitats and cryptic diversity: unexpected patterns of connectivity and phylogeographic breaks in a Mediterranean endemic marine cave mysid
The marine cave-dwelling mysid Hemimysis margalefi is distributed over the whole Mediterranean Sea which contrasts with the poor dispersal capabilities of this brooding species. In addition, underwater marine caves are a highly fragmented habitat which further promotes strong genetic structuring, therefore providing highly informative data on the levels of marine population connectivity across biogeographic regions. This study investigates how habitat and geography have shaped the connectivity network of this poor disperser over the entire Mediterranean Sea through the use of several mitochondrial and nuclear markers. Five deeply divergent lineages were observed among H. margalefi populations resulting from deep phylogeographic breaks, some dating back to the Oligo-Miocene. Whether looking at the intra-lineage or inter-lineage levels, H. margalefi populations present a high genetic diversity and population structuring. This study suggests that the five distinct lineages observed in H. margalefi actually correspond to as many separate cryptic taxa. The nominal species, H. margalefi sensu stricto, corresponds to the westernmost lineage here surveyed from the Alboran Sea to south-eastern Italy. Typical genetic breaks such as the Almeria-Oran Front or the Sicilo-Tunisian Strait do not appear to be influential on the studied loci in H. margalefi sensu stricto. Instead, population structuring appears more complex and subtle than usually found for model species with a pelagic dispersal phase. The remaining four cryptic taxa are all found in the eastern basin, but incomplete lineage sorting is suspected and speciation might still be in process. Present day population structure of the different H. margalefi cryptic species appears to result from past vicariance events started in the Oligo-Miocene and maintained by present day coastal topography, water circulation and habitat fragmentation.
Plate 93 from: Bahls L, Boynton B, Johnston B (2018) Atlas of diatoms (Bacillariophyta) from diverse habitats in remote regions of western Canada. PhytoKeys 105: 1-186. https://doi.org/10.3897/phytokeys.105.23806
Plate 93 Baillie-Back. 1–3 Cymbopleura neoheteropleura (6860). Scale bar: 10 µm.
Plate 80 from: Bahls L, Boynton B, Johnston B (2018) Atlas of diatoms (Bacillariophyta) from diverse habitats in remote regions of western Canada. PhytoKeys 105: 1-186. https://doi.org/10.3897/phytokeys.105.23806
Plate 80 Baillie-Back. 1–7 Eunotia paralleladubia (6857, 6861, 6864, 6865). Scale bar: 10 µm.
Plate 73 from: Bahls L, Boynton B, Johnston B (2018) Atlas of diatoms (Bacillariophyta) from diverse habitats in remote regions of western Canada. PhytoKeys 105: 1-186. https://doi.org/10.3897/phytokeys.105.23806
Plate 73 Coppermine. 1–6 Stauroneis hyperborea (6831, 6833). Scale bars: 10 µm.
Plate 36 from: Bahls L, Boynton B, Johnston B (2018) Atlas of diatoms (Bacillariophyta) from diverse habitats in remote regions of western Canada. PhytoKeys 105: 1-186. https://doi.org/10.3897/phytokeys.105.23806
Plate 36 Haida Gwaii. 1–6 Epithemia smithii (5065). Scale bars: 10 µm.
Plate 116 from: Bahls L, Boynton B, Johnston B (2018) Atlas of diatoms (Bacillariophyta) from diverse habitats in remote regions of western Canada. PhytoKeys 105: 1-186. https://doi.org/10.3897/phytokeys.105.23806
Plate 116 Hood. 1–5 Cymbella arctica (6904). Scale bar: 10 µm.
Plate 107 from: Bahls L, Boynton B, Johnston B (2018) Atlas of diatoms (Bacillariophyta) from diverse habitats in remote regions of western Canada. PhytoKeys 105: 1-186. https://doi.org/10.3897/phytokeys.105.23806
Plate 107 Baillie-Back. 1–3 Stauroneis circumborealis (6856, 6864). Scale bars: 10 µm.
Plate 117 from: Bahls L, Boynton B, Johnston B (2018) Atlas of diatoms (Bacillariophyta) from diverse habitats in remote regions of western Canada. PhytoKeys 105: 1-186. https://doi.org/10.3897/phytokeys.105.23806
Plate 117 Hood. 1–14 Cymbella cleve-eulerae (6898, 6905, 6909). Scale bar: 10 µm.
Figure 3 in Earthworm diversity and abundance in different habitats at Satyajit Ray Film and Television Institute, Kolkata
Figure 3. Abundance of earthworm species in grassland habitat
Figure 2 in Earthworm diversity and abundance in different habitats at Satyajit Ray Film and Television Institute, Kolkata
Figure 2. Abundance of earthworm species in residential areas.
Fig 1 in Cetacean Diversity And Habitat Preferences In Tropical Waters Of East Kalimantan, Indonesia
Fig 1. Map of survey areas along the East Kalimantan coastline, Indonesia.
Fig. 3 in Wild bees (Anthophila) of Porto Santo (Madeira Archipelago) and their habitats: species diversity, distribution patterns and bee-plant network *
Fig. 3: Distribution patterns of six wild-bee species (grid size 1km x 1 km).
Anthropogenic habitat modification causes nonlinear multiscale bird diversity declines
<p>Anthropogenic habitat modification is a leading contributor to biodiversity change, but it is unclear what factors, including scale, influence the magnitude of change. Changes in species richness and its scaling relationship across an anthropogenic gradient can be influenced by changes in the total number of individuals in each sample, the species abundance distribution, and/or the spatial arrangement of conspecific individuals. Here, we integrated continental-scale citizen science data on bird occurrences across the contiguous United States — from eBird — with an analytical framework capable of dissecting<em> </em>the aforementioned biodiversity components to quantify bird diversity changes along an anthropogenic landscape habitat modification gradient. We found an overall decline in bird diversity along an anthropogenic modification gradient, with peak levels of bird diversity at low to moderate levels of modification. The magnitude of biodiversity change was greater at gamma than at alpha scales and was most strongly associated with a declining number of individuals along the anthropogenic gradient. Spatial species turnover was lower at higher impacted sites, but this was also due to the sampling of fewer individuals rather than changes in spatial species patchiness. Our results suggest that local-scale management can promote bird diversity, especially at the natural-rural-suburban interface. Management efforts (e.g., managing natural habitat or preserving urban greenspaces against development) should be focused on creating, restoring, and preserving resources (e.g., nesting habitat, foraging resources) necessary for a large number of individuals, as this is the primary influence of diversity change along an anthropogenic gradient.</p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.