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99 results for “scale-dependency”
Data from: Scale-dependent effects of forest restoration on Neotropical fruit bats
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Data from: Scale-dependent intraspecific competition of Taurus cedar (Cedrus libani A. Rich.) saplings in the Southern Turkey
Better understanding of the competitive interaction at the early development stages of the stand is crucial to help schedule silvicultural treatments for young stands and for the better management of the future stands. We used scale-dependent analysis to improve our understanding of sapling dynamics in the pure Taurus cedar (Cedrus libani A. Rich.) stands in Southern Turkey. Using data from nine plots established at the western Taurus Mountains; diameter, height and crown radii of saplings were compared, and spatial point pattern analyses were performed. We found significant differences for the mean diameter and height, and crown radii of saplings among the plots. Univariate pair correlation function showed that sapling pattern was regular only at small scales (r < 0.4 m) but was predominantly random. Bivariate pair correlation function revealed no evidence of spatial interaction between tall saplings and short saplings. Univariate mark correlation function revealed that strong intraspecific competition was detected at small scales (up to 0.55m). This distance is reasonable for the juvenile age tending of Taurus cedar saplings and should be under consideration during silvicultural treatments to use the site productivity more efficiently.
Data from: Scale-dependent role of demography and dispersal on the distribution of populations in heterogeneous landscapes
Both dispersal and local demographic processes determine a population's distribution among habitats of varying quality, yet most theory, experiments, and field studies have focused on the former. We use a generic model to show how both processes contribute to a population's distribution, and how the relative importance of each mechanism depends on scale. In contrast to studies only considering habitat-dependent dispersal, we show that predictions of ideal free distribution (IFD) theory are relevant even at landscape scales, where the assumptions of IFD theory are violated. This is because scales that inhibit one process, promote the other's ability to drive populations to the IFD. Furthermore, because multiple processes can generate IFDs, the pattern alone does not specify a causal mechanism. This is important because populations with IFDs generated by dispersal or demography respond much differently to shifts in resource distributions.
Data from: Environmental and scale-dependent evolutionary trends in the body size of crustaceans
The ecological and physiological significance of body size is well recognized. However, key macroevolutionary questions regarding the dependency of body size trends on the taxonomic scale of analysis and the role of environment in controlling long-term evolution of body size are largely unknown. Here, we evaluate these issues for decapod crustaceans, a group that diversified in the Mesozoic. A compilation of body size data for 792 brachyuran crab and lobster species reveals that their maximum, mean and median body size increased, but no increase in minimum size was observed. This increase is not expressed within lineages, but is rather a product of the appearance and/or diversification of new clades of larger, primarily burrowing to shelter-seeking decapods. This argues against directional selective pressures within lineages. Rather, the trend is a macroevolutionary consequence of species sorting: preferential origination of new decapod clades with intrinsically larger body sizes. Furthermore, body size evolution appears to have been habitat-controlled. In the Cretaceous, reef-associated crabs became markedly smaller than those in other habitats, a pattern that persists today. The long-term increase in body size of crabs and lobsters, coupled with their increased diversity and abundance, suggests that their ecological impact may have increased over evolutionary time.
Data from: Invasive plants have scale-dependent effects on diversity by altering species-area relationships
Although invasive plant species often reduce diversity, they rarely cause plant extinctions. We surveyed paired invaded and uninvaded plant communities from three biomes. We reconcile the discrepancy in diversity loss from invaders by showing that invaded communities have lower local richness but steeper species accumulation with area than that of uninvaded communities, leading to proportionately fewer species loss at broader spatial scales. We show that invaders drive scale-dependent biodiversity loss through strong neutral sampling effects on the number of individuals in a community. We also show that nonneutral species extirpations are due to a proportionately larger effect of invaders on common species, suggesting that rare species are buffered against extinction. Our study provides a synthetic perspective on the threat of invasions to biodiversity loss across spatial scales.
Figure 16 in Biogeography of marine tintinnid ciliates (Ciliophora, Tintinnida): a Scale-Dependent Model
Figure 16. Results of cluster analysis (Simpson index) of species compositions of tintinnid ciliates in the Arctic Ocean; in nodes of dendrogram, the results of bootstrap-analysis are marked.
Figure 4 in Biogeography of marine tintinnid ciliates (Ciliophora, Tintinnida): a Scale-Dependent Model
Figure 4. Long-term dynamics of seasonal changes in the taxonomic structure of tintinnids in the Sevastopol Bay (1998-2011). After Gavrilova & Dovgal (2019b).
Figure 12 in Biogeography of marine tintinnid ciliates (Ciliophora, Tintinnida): a Scale-Dependent Model
Figure 12. Results of cluster analysis (Simpson index) of species compositions of tintinnid ciliates in the Pacific Ocean; in nodes of dendrogram, the results of bootstrap-analysis are marked.
Data from: Using functional trait diversity patterns to disentangle the scale-dependent ecological processes in a subtropical forest
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Data from: Scale-dependent intraspecific competition of Taurus cedar (Cedrus libani A. Rich.) saplings in the Southern Turkey
Open the record for dataset details and reuse information.
Data from: Scale-dependent role of demography and dispersal on the distribution of populations in heterogeneous landscapes
Open the record for dataset details and reuse information.
Data from: Avian brood parasitism and ectoparasite richness – scale-dependent diversity interactions in a three-level host-parasite system
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Data from: Environmental and scale-dependent evolutionary trends in the body size of crustaceans
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Data from: Invasive plants have scale-dependent effects on diversity by altering species-area relationships
Open the record for dataset details and reuse information.
Supporting data and code for "The scale-dependent effect of environmental filters on species turnover and nestedness in an estuarine benthic community".
<p>R code and dataset for: Menegotto A., Dambros C.S. & Netto S.A. 2019. The scale-dependent effect of environmental filters on species turnover and nestedness in an estuarine benthic community. Ecology, 100, e02721.</p>
Figure 9 in Biogeography of marine tintinnid ciliates (Ciliophora, Tintinnida): a Scale-Dependent Model
Figure 9. Species accumulation curve for tintinnid ciliates diversity in the Atlantic Ocean.
Figure 11 in Biogeography of marine tintinnid ciliates (Ciliophora, Tintinnida): a Scale-Dependent Model
Figure 11. Species accumulation curve for tintinnid ciliates diversity in the Pacific Ocean.
Figure 13 in Biogeography of marine tintinnid ciliates (Ciliophora, Tintinnida): a Scale-Dependent Model
Figure 13. Species accumulation curve for tintinnid ciliates diversity in the Indian Ocean.
Scale-dependent effects of urbanization on avian diversity in a Neotropical region
<p>RDA_birds script: This is the script that contains the Redundancy Analysis (RDA), whose database is named: "Rda_birds.txt". RDA is a multivariate statistical technique that combines elements of Principal Component Analysis (PCA) and Multiple Regression to explore the relationships between sets of variables. This technique is often used to analyze data where there are multiple responses (dependent variables) and multiple predictors (independent variables). In this case, we used this statistical technique to explore multivariate relationships between sets of variables, where we explored how local environmental and landscape characteristics (independent variables) can explain patterns in bird species communities (dependent variables).</p> <p>MOBr_birds script: This is the script that contains the Biodiversity Measurement Analysis (Mob), whose database is named: "Mobr_birds". Mob is a multi-scale approach to dissecting the roles of species abundance distribution (SAD), total community abundance and spatial aggregation within species along continuous environmental gradients.</p>
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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.