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2,556 results for “assemblages”
Effects of individual traits vs. trait syndromes on assemblages of various herbivore guilds associated with central European Salix
<p><span>Data on studied willows, their traits, associated arthropod herbivore species, and script to perform analyses for the manuscript: "Effects of individual traits vs. trait syndromes on assemblages of various herbivore guilds associated with central European <em>Salix</em>".</span></p>
Data from: Unravelling the complexities of temporal biotic homogenisation and heterogenization: Avian assemblage dynamics in Britain
<p>Biotic homogenization is a process whereby species assemblages become more similar through time. The standard way of identifying the process of biotic homogenization is to look for decreases in spatial beta-diversity. However, using a single assemblage-level metric to assess homogenization can mask important changes in the occupancy patterns of individual species. Here, we analysed changes in the spatial beta-diversity patterns (i.e., biotic heterogenization or homogenization) of British bird assemblages within 30km x 30km regions between two periods (1988-1991 and 2008-2011). We partitioned the change in spatial beta-diversity into extirpation and colonisation resultant change (i.e., change in spatial beta-diversity within each region resulting from both extirpation and colonisation). We used measures of abiotic change in combination with Bayesian modelling to disentangle the drivers of biotic heterogenization and homogenization. We detected both heterogenization and homogenization across the two time periods and three measures of diversity (taxonomic, phylogenetic, and functional). In addition, both extirpation and colonisation contributed to the observed changes, with heterogenization mainly driven by extirpation and homogenization by colonisation. These assemblage-level changes were primarily due to shifting occupancy patterns of generalist species. Compared to habitat generalists, habitat specialists had significantly (i) higher average contributions to colonisation resultant change (indicating heterogenization within a region due to colonisation) and (ii) lower average contributions to extirpation resultant change (indicating homogenization from extirpation). Generalists showed the opposite pattern. Increased extirpation resultant homogenization within regions was associated with increased urban land cover and decreased habitat diversity, precipitation, and temperature. Changes in extirpation resultant heterogenization and colonisation resultant heterogenization were associated with differences in elevation between regions and changes in temperature and land cover. Many of the 'winners' (i.e., species that increased in occupancy) were species that had benefitted from conservation action (e.g., buzzard (<em>Buteo buteo</em>)). The 'losers' (i.e., those that decreased in occupancy) consisted primarily of previously common species, such as cuckoo (<em>Cuculus canorus</em>). Our results show that focusing purely on changes in spatial beta-diversity over time may obscure important information about how changes in the occupancy patterns of individual species contribute to homogenization and heterogenization.</p>
Increases in Species Richness Lead to Decreases in Phylogenetic Diversity in Mediterranean Species Assemblages
<p><span>The relationship between taxonomic and phylogenetic diversity remains underexplored. Our goal was to determine whether a causal link exists between species richness and phylogenetic diversity. We wanted to evaluate whether species richness determines the phylogenetic diversity in realized assemblages (<em>taxonomic determinant hypothesis</em>) or phylogenetic diversity determines the species richness (<em>phylogenetic determinant hypothesis</em>). We also hypothesize that this causal framework could shift in different bioclimatic regions. We sampled over 1700 plant assemblages in grasslands and shrublands across three bioclimatic regions in Navarra, Spain. Using non-recursive structural equation modelling, we found that species richness influences phylogenetic diversity, and </span><span>that this causal relationship remains consistently negative and is unaffected by climate differences among regions</span><span>. Specifically, greater plant richness leads to increased phylogenetic convergence, resulting in reduced phylogenetic diversity. This means that the incorporation of new species into assemblages involves adding closely related species in phylogenetic terms, regardless of the bioclimatic region.</span></p>
Continental scale α- and β-diversity patterns of terrestrial eukaryotic microbes: effect of climate and microhabitat on testate amoeba assemblages in Eurasian peatlands
Open the record for dataset details and reuse information.
Testing the robustness of a coastal biodiversity data protocol in the Mediterranean: Insights from the molluscan assemblages of the sublittoral macroalgae communities
<p>Dataset from NaGISA project, class mollusca.</p>
Does forest degradation affect lizard assemblage in the Arid Chaco Ecoregion? Dataset
<p>The dataset contains information about vegetation coverage and abundance of three lizard species from two sites with differents degrees of disturbance in the Arid Chaco Ecoregion. Monthly samplings were conducted from November to February during the summer of 2014-2015. Two forested areas were selected for comparison: one section that had experienced high amounts of degradation and one section that had suffered only slight degradation. Observers conducted diurnal visual encounter surveys along seven 200 m long transects in each of the two sites. A total of 14 independent systematically distributed transects were conducted, separated by 50 m parallel intervals. All the surveys were performed under similar weather conditions. We categorized the lizards by sex (male and female) and age (adults and juveniles). The microhabitat ground cover characteristics we assessed were: 1) bare ground, 2) herbs/grass, 3) litter, 4) cacti, and 5) rocks; number of shrubs and trees; and the number of vegetal species. To obtain microhabitat coverage data, pictures were taken where the animals were observed at a distance of 1.5 m above the ground. Using the photographs, we calculated the proportion of each microhabitat coverage characteristic. To calculate the number of trees and shrubs a two meter by two meter cardinally oriented X was superimposed over the exact point where the subjects were found and an observer traced the axis counting the number of trees and shrubs that crossed the line. The total number of vegetal species within each delimited area determined its richness.</p>
FIGURE 9 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 9. Stenothoe irinae sp. nov., male (ZIN 89387): a—peraeopod III; b—propodus and dactylus of peraeopod III; ccoxal part of peraeopod IV; d—uropod I; e—uropod II; f—uropod III; g—telson.
FIGURE 8 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 8. Stenothoe irinae sp. nov., female (ZIN 89385) (a, d), male (ZIN 89386) (b, c, e, f): a—gnathopod I; b—same, distal segments; c—same; distal part of propodal segment and dactylus; d, e—gnathopod II; f –same; distal part of propodal segment and dactylus.
FIGURE 1 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 1. Alive coloration of female (a) and male (b, c) of Stenothoe nhatrangensis sp. nov., (LEMMI) and male of Stenothoe irinae sp. nov. (d).
FIGURE 2 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 2. Stenothoe nhatrangensis sp. nov., male (ZIN 89382): a—antenna I and antenna II; b—mandible; c—same, distal part of incisor process; d—maxilla I; e—same, distal part of inner lobe; f –maxilla II.
FIGURE 5 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 5. Stenothoe nhatrangensis sp. nov., male (ZIN 89382): a—peraeopod VI; b—peraeopod VII; c—uropod I; d— uropod II; e—uropod III; f, g—telson.
FIGURE 4 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 4. Stenothoe nhatrangensis sp. nov., male (ZIN 89382): a, b—peraeopod III; c, d—peraeopod IV; e, f—peraeopod V.
FIGURE 7 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 7. Stenothoe irinae sp. nov., male (LEMMI) (a, b, e–h), female (LEMMI) (c–d): a, b—antenna I; c, d—antenna II; e—mandible; f—maxilla I; g—maxilla II; h—maxilliped; i—same, distal segments.
FIGURE 6 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 6. Stenothoe nhatrangensis sp. nov., female (ZIN 89383): a—antenna I; b—antenna II; c, d—gnathopod I; e, fgnathopod II; g—telson and uropods; h—maxilliped.
FIGURE 3 in Two new species of amphipod genus Stenothoe Dana, 1852 (Stenothoidae) associated with fouling assemblages from Nhatrang Bay, Vietnam
FIGURE 3. Stenothoe nhatrangensis sp. nov., male (ZIN 89382): a—gnathopod II; b—distal part of propodus and dactylus of gnathopod II; c—gnathopod I; d—distal segments of gnathopod I.
Supplementary material 1 from: Ávila MP, Carvalho RN, Casatti L, Simião-Ferreira J, de Morais LF, Teresa FB (2018) Metrics derived from fish assemblages as indicators of environmental degradation in Cerrado streams. Zoologia 35: 1-8. https://doi.org/10.3897/zoologia.35.e12895
Table S1. Species identity, total number of individuals and species classification according to trophic guilds and habitat use. Terins: terrestrial invertivorous; Aquins: aquatic invertivorous; Det-Per: detritivorous/periphytivorous; Pis: piscivorous; Omni: omnivorous; WC: water column; Ben: benthic; Nectb: nectobenthic; Bank: bank-dwelling species; Rheo: rheophilic. Figure S1. Species accumulation (black) and rarefaction curve (gray) based on samples. : Data type: measurement
Supplementary material 1 from: Souza CD, Batista VS, Fabré NN (2018) What are the main local drivers determining richness and fishery yields in tropical coastal fish assemblages? Zoologia 35: 1-12. https://doi.org/10.3897/zoologia.35.e12898
Taxonomic list of fish species in phylogenetic order (Nelson 2006), captured from October 2010 to August 2011 on the coast of Alagoas. : Data type: species data
Supplementary material 1 from: de Oliveira Dias C, de Araujo AV, Bonecker SLC (2018) Vertical distribution and structure of copepod (Arthropoda: Copepoda) assemblages in two different seasons down to 1,200 m in the tropical Southwestern Atlantic. Zoologia 35: 1-11. https://doi.org/10.3897/zoologia.35.e13886
Table S1. Vertical distributions of the mean, standard deviation (SD), relative abundance (RA), and occurrence frequency (OF) of the copepod species found in Campos Basin, during the rainy season. :
Supplementary material 2 from: de Oliveira Dias C, de Araujo AV, Bonecker SLC (2018) Vertical distribution and structure of copepod (Arthropoda: Copepoda) assemblages in two different seasons down to 1,200 m in the tropical Southwestern Atlantic. Zoologia 35: 1-11. https://doi.org/10.3897/zoologia.35.e13886
Table S2. Vertical distributions of the mean, standard deviation (SD), relative abundance (RA), and occurrence frequency (OF) of the copepod species found in Campos Basin, during the dry season. :
FIGURE 1 in Inventorizing the modern benthic foraminiferal assemblage from marginal marine environments across the North West coast of Bay of Bengal
FIGURE 1. LOcATION OF THE SAMPLING STATIONS wITH RESPEcT TO EAcH HAbITAT. CO-ORdINATES OF THE SAMPLEd STATIONS HAVE bEEN dETAILEd IN SUPPLEMENTARy TAbLE S1.
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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.