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7 results for “Distance-decay”
What drives study-dependent differences in distance-decay relationships of microbial communities?
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Data from: Distance-decay differs among vertical strata in a tropical rainforest
1. Assemblage similarity decays with geographic distance—a pattern known as the distance-decay relationship. While this pattern has been investigated for a wide range of organisms, ecosystems, and geographical gradients, whether these changes vary more cryptically across different forest strata (from ground to canopy) remains elusive. 2. Here, we investigated the influence of ground vs arboreal assemblages to the general distance-decay relationship observed in forests. We seek to explain differences in distance-decay relationships between strata in the context of the vertical stratification of assemblage composition, richness, and abundance. 3. We surveyed for a climate sensitive model organism, amphibians, across vertical rainforest strata in Madagascar. For each tree, we defined assemblages of ground-dwelling, understory, or canopy species. We calculated horizontal distance-decay in similarity across all trees, and across assemblages of species found in different forest strata (ground, understory, and canopy). 4. We demonstrate that within stratum comparisons exhibit a classic distance-decay relationship for canopy and understory communities but no distance-decay relationships for ground communities. We suggest that differences in horizontal turnover between strata may be due to local scale habitat and resource heterogeneity in the canopy, or the influence of arboreal traits on species dispersal and distribution. 5. Synthesis: Biodiversity patterns in horizontal space were not consistent across vertical space, suggesting that canopy fauna may not play by the same set of 'rules' as their conspecifics living below them on the ground. Our study provides compelling evidence that the above-ground amphibian assemblage of tropical rainforests is the primary driver of the classical distance-decay relationship.
Data from: Distance-decay differs among vertical strata in a tropical rainforest
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Data from: Species-area curve and distance-decay relationship indicate habitat thresholds of ectomycorrhizal fungi in an old-growth Pseudotsuga menziesii landscape
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Data from: Patterns of parasite community dissimilarity: the significant role of land use and lack of distance-decay in a bat—helminth system
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Data from: Agri-environmental schemes promote ground-dwelling predators in adjacent oilseed rape fields: diversity, species traits and distance-decay functions
1. Rising demands for agricultural products and high environmental costs of intensive agriculture reinforce the need for ecological replacements in agricultural management. In Europe, agri-environmental schemes (AES) are implemented to enhance species richness and provision of ecosystem services, but the effectiveness of different AES types and the spatial extent of possible beneficial effects are little understood. In this study we assessed the effects of different AES types on diversity, species traits and distance-decay functions of ground- dwelling predators in adjacent crop fields. 2. On 31 study sites with winter oilseed rape (OSR) adjacent to four types of AES differing in management intensity and habitat age we recorded ground-dwelling predators (carabid beetles, staphylinid beetles and spiders) during OSR growth from April to July. Effects of the AES on species richness, activity densities and different traits of these taxa were examined with transects of pitfall traps running along a continuous distance gradient from the AES across the habitat border into the OSR fields. 3. Ground-dwelling predator communities benefitted similarly from the different AES types. In adjacent OSR, activity densities, carabid species richness and the proportion of predatory carabid beetles declined from the field edge while mean body size increased. Adjacent AES increased the proportion of predatory species and simultaneously decreased the proportion of granivorous or frugivorous species in adjacent OSR fields. 4. Synthesis and applications. Our results indicate a beneficial effect of adjacent agri-environmental schemes (AES) on ground-dwelling predators in oilseed rape (OSR), mostly irrespective of AES type and therefore management intensity and habitat age. The short-ranged distance decay effects on natural enemies in OSR underpin that a strategic spatial placement of AES in agricultural landscapes is required to maximise biological pest control. This could help replace anthropogenic input in modern agriculture and secure adequate yields.
Data from: Agri-environmental schemes promote ground-dwelling predators in adjacent oilseed rape fields: diversity, species traits and distance-decay functions
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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.