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162 results for “continental scale”
Figure 1 from: Kissling WD, Seijmonsbergen AC, Foppen RPB, Bouten W (2017) eEcoLiDAR, eScience infrastructure for ecological applications of LiDAR point clouds: reconstructing the 3D ecosystem structure for animals at regional to continental scales. Research Ideas and Outcomes 3: e14939. https://doi.org/10.3897/rio.3.e14939
Figure 1 - The vertical and horizontal distribution of plants influences habitat structure and 3D characteristics of vegetation for animals. Illustrated are examples for (a) forests, (b) agricultural and open landscapes, and (c) reedbeds and marshlands. The height, openness and density of vegetation as well as specific habitat features (e.g. tree species, hedges etc.) are key aspects of animal habitat and space use.
Data from: Community functional trait composition at the continental scale: the effects of non-ecological processes
Ecological communities and their response to environmental gradients are increasingly being described by measures of trait composition at the community level – the trait-based approach. Whether ecological or non-ecological processes influence trait composition between communities has been debated. Understanding the processes that influence trait composition is important for reconstructing paleoenvironmental conditions from fossil deposits and for understanding changes in community functionality through time. Here, we assess the influence of ecological and non-ecological processes on the distribution of traits within North American mammals. We found that non-ecological processes including historical contingency, spatial autocorrelation, and evolutionary history do not influence trait composition; however, the variance in trait composition is highly explained by climate gradients. Our results suggest that habitat breadth, terrestriality, diet breadth, and reproductive traits are strong candidates as proxies for measuring functional aspects of environments in the past and present.
Climate and geology overwrite land use effects on soil organic nitrogen cycling on a continental scale
<p><strong>Abstract.</strong> Soil fertility and plant productivity are globally constrained by N availability. Proteins are the largest N reservoir in soils and the cleavage of proteins into small peptides and amino acids has been shown to be the rate limiting step in the terrestrial N cycle. However, we are still lacking a profound understanding of the environmental controls of this process. Here we show that integrated effects of climate and soil geochemistry drive protein cleavage across large scales. We measured gross protein depolymerization rates in mineral and organic soils sampled across a 4000-km-long European transect covering a wide range of climates, geologies and land uses. Based on structural equation models we identified that soil organic N cycling was strongly controlled by substrate availability, e.g. by soil protein content. Soil geochemistry was a secondary predictor, by controlling protein stabilization mechanisms and protein availability. Precipitation was identified as the main climatic control on protein depolymerization, by affecting soil weathering and soil organic matter accumulation. In contrast, land use was a poor predictor of protein depolymerization. Our results highlight the need to consider geology and precipitation effects on soil geochemistry when estimating and predicting soil N cycling at large scales.</p>
Data from: Temperature-related natural selection in a wind-pollinated tree across regional and continental scales
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Data from: Community functional trait composition at the continental scale: the effects of non-ecological processes
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Data from: Climatic and vegetational drivers of insect beta diversity at the continental scale
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Climate structures bison dietary quality and composition at the continental scale
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Data from: Patterns of size variation in bees at a continental scale: does Bergmann’s rule apply?
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The genetic legacy of continental scale admixture in Indian Austroasiatic speakers
GEO Series GSE126882. Homo sapiens. 39 samples. Type: Genome variation profiling by SNP array; SNP genotyping by SNP array.
Standardizing thermal contrast among local climate zones at a continental scale
<p>The seasonal daily mean, daytime mean and nighttime mean air temperature over China weather stations in 2016.</p> <p>Read "README.txt" for the details of the data</p>
Data from: Assembly mechanisms determining high species turnover in aquatic communities over regional and continental scales
Niche and neutral processes drive community assembly and metacommunity dynamics, but their relative importance might vary with the spatial scale. The contribution of niche processes is generally expected to increase with increasing spatial extent at a higher rate than that of neutral processes. However, the extent to what community composition is limited by dispersal (usually considered a neutral process) over increasing spatial scales might depend on the dispersal capacity of composing species. To investigate the mechanisms underlying the distribution and diversity of species known to have great powers of dispersal (hundreds of kilometres), we analysed the relative importance of niche processes and dispersal limitation in determining beta-diversity patterns of aquatic plants and cladocerans over regional (up to 300 km) and continental (up to 3300 km) scales. Both taxonomic groups were surveyed in five different European regions and presented extremely high levels of beta-diversity, both within and among regions. High beta-diversity was primarily explained by species replacement (turnover) rather than differences in species richness (i.e. nestedness). Abiotic and biotic variables were the main drivers of community composition. Within some regions, small-scale connectivity and the spatial configuration of sampled communities explained a significant, though smaller, fraction of compositional variation, particularly for aquatic plants. At continental scale (among regions), a significant fraction of compositional variation was explained by a combination of spatial effects (exclusive contribution of regions) and regionally-structured environmental variables. Our results suggest that, although dispersal limitation might affect species composition in some regions, aquatic plant and cladoceran communities are not generally limited by dispersal at the regional scale (up to 300 km). Species sorting mediated by environmental variation might explain the high species turnover of aquatic plants and cladocerans at regional scale, while biogeographic processes enhanced by dispersal limitation among regions might determine the composition of regional biotas.
Data from: No ecological opportunity signal on a continental scale? Diversification and life-history evolution of African true toads (Anura: Bufonidae)
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Data from: Assembly mechanisms determining high species turnover in aquatic communities over regional and continental scales
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FIGURE 28 in Towards identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 2. Checklists and keys to six archaeococcoid families
FIGURE 28. Ortheziola britannica Kozár & Miller, adult female, reproduced from Kozár & Miller (2000: 21, Fig. 3) with permission from John Wiley and Sons.
FIGURE 25 in Towards identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 2. Checklists and keys to six archaeococcoid families
FIGURE 25. Praelongorthezia praelonga (Douglas), adult female, reproduced from Kozár (2004: 421, Fig. 181) with permission from Agrártudományi Kutatóközpont. AS: abdominal spiracles.
FIGURE 21 in Towards identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 2. Checklists and keys to six archaeococcoid families
FIGURE 21. Monophleboides gymnocarpi (Hall), adult female, developed from Morrison (1928: 126, Fig. 57).
FIGURE 24 in Towards the identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 1. Identification of the families
FIGURE 24. Eriokermes juniperinus (De Lotto) (Kermesidae), adult female morphology, from De Lotto (1954a: 217, Fig. 3), reproduced with permission of the Entomological Society of Southern Africa. Note prominent, sclerotised anal lobes, and the absence of microtubular ducts and translucent pores on hind legs. On Juniperus sp. only.
FIGURE 18 in Towards the identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 1. Identification of the families
FIGURE 18. Dactylopiidae adult female morphology, from Gill (1993: 13, Fig. 10), © California Department of Food & Agriculture, Sacramento, California, U.S.A. Note dorsal clusters of 3-, 4- or 5-locular pores, each cluster usually with a single central duct, and numerous thick truncate setae, each with sides almost parallel.
FIGURE 6 in Towards the identification of the scale insects (Hemiptera: Coccomorpha) of continental Africa: 1. Identification of the families
FIGURE 6. Kuwania oligostigma De Lotto adult female morphology, from De Lotto (1959a: 388, Fig. 2), reproduced with permission of the Entomological Society of Southern Africa. Note ventral apex of tibia with numerous capitate setae (A) and presence of mouthparts, otherwise structure similar to Fig. 5 apart from the absence of abdominal spiracles.
Figure 2 in Integrative taxonomic analysis of new collections from the central Angolan highlands resolves the taxonomy of African pipistrelloid bats on a continental scale
Figure 2. Bayesian phylogeny of mitochondrial cytochrome b sequences (708 nucleotides) of pipistrelle-like Vespertilionidae from the genera Afronycteris, Neoromicia, Laephotis and Pipistrellus sampled from Angola, South Africa and Eswatini,
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.