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49 results for “marginal habitats”
FIGURE 6 in Four new species of the subterranean amphipod genus Stygobromus (Amphipoda: Crangonyctidae) from shallow groundwater habitats on the Coastal Plain and eastern margin of the Piedmont in Maryland and Virginia, USA
FIGURE 6. Stygobromus felleri, sp. n. Funks Pond Spring, Cecil County, Maryland.Paratype male (4.0–4.5 mm): (a, b) gnathopods 1, 2 (palmar margins enlarged). Gnathopods drawn to larger scale than antennae.
FIGURE 3. Agave infiernilloensis. A. Finely denticulate margin. B. Nearly smooth margin. C-D. Habitat. E in Agave infiernilloensis (sect. Choritepalae, Asparagaceae), a gigantic new species from the Balsas Basin in Western Mexico
FIGURE 3. Agave infiernilloensis. A. Finely denticulate margin. B. Nearly smooth margin. C-D. Habitat. E. Lower face of the leaf. F. Rosette. G. Fruits. Photographs by Julia Etter & Martin Kristen.
FIGURE 2. Begonia tandangii. A. Habitat. B. Habit. C. Rhizome. D. Stipule. E. Leaf, adaxial view. F. Leaf margin sparsely fringed with minute hairs. G. Bracts. H. Staminate flower. I. Pistillate flower, ventral view. J. Pistillate flower, lateral view. K in Begonia tandangii (Begoniaceae, section Baryandra), a new species from Luzon Island, the Philippines
FIGURE 2. Begonia tandangii. A. Habitat. B. Habit. C. Rhizome. D. Stipule. E. Leaf, adaxial view. F. Leaf margin sparsely fringed with minute hairs. G. Bracts. H. Staminate flower. I. Pistillate flower, ventral view. J. Pistillate flower, lateral view. K. Transverse section of developing capsule. L. Capsule with persistent tepals. Scale bars are 5 cm for B, 5 mm for C–D and F–L, 10 mm for E. [All photos from Ching-I Peng 23400 (HAST)]
Data from: Landscape resistance and habitat combine to provide an optimal model of genetic structure and connectivity at the range margin of a small mammal
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Range expansion, habitat use and choosiness in a butterfly under climate change: marginality and tolerance of oviposition site selection
<p>Poleward range shifts under climate change involve the colonization of new sites and hence the foundation of new populations at the expanding edge. We studied oviposition site selection in a butterfly under range expansion (<i>Lycaena dispar</i>), a key process for the establishment of new populations. We described and compared the microhabitats used by the species for egg laying with those available across the study sites both in edge and in core populations. We carried out an ecological niche factor analysis (ENFA) to estimate (1) the variety of microhabitats used by the butterfly for egg laying (tolerance) and (2) the extent to which these selected microhabitats deviated from those available (marginality). Microhabitat availability was similar in edge and core populations. Ambient temperature recorded at the site level above the vegetation was on average lower at core populations. In contrast with what is often assumed, edge populations did not have narrower microhabitat use compared to core populations. Females in edge populations even showed a higher degree of generalism: they laid eggs under a wider range of microhabitats. We suggest that this pattern could be related to an overrepresentation of fast deciding personalities in edge populations. We also showed that the thermal time window for active female behaviour was reduced in edge populations, which could significantly decrease the time budget for oviposition and increase the threshold of acceptance during microhabitat selection for oviposition in recently established populations.</p>
Range expansion, habitat use and choosiness in a butterfly under climate change: marginality and tolerance of oviposition site selection
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Data from: Seasonal dynamics of Atlantic herring (Clupea harengus L.) populations spawning in the vicinity of marginal habitats
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Data from: Greater growth stability of trees in marginal habitats suggests a patchy pattern of population loss and retention in response to increased drought at the rear edge
Species rear range-edges are predicted to retract as climate warms, yet evidence of population persistence is accumulating. Accounting for this disparity is essential to enable prediction and planning for species' range retractions. At the Mediterranean edge of European beech-dominated temperate forest, we tested the hypothesis that individual performance should decline at the limit of the species' ecological tolerance in response to increased drought. We sampled 40 populations in a crossed factor design of geographical and ecological marginality and assessed tree growth resilience and decline in response to recent drought. Drought impacts occurred across the rear edge, but tree growth stability was unexpectedly high in geographically isolated marginal habitat and lower than anticipated in the species' continuous range and better-quality habitat. Our findings demonstrate that, at the rear edge, range shifts will be highly uneven and characterised by reduction in population density with local population retention rather than abrupt range retractions.
Data from: Greater growth stability of trees in marginal habitats suggests a patchy pattern of population loss and retention in response to increased drought at the rear edge
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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.