Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
3,136
datasets available to search
ShareScore release 0.9.0
Dataset results
3,136 results for “Terrestrialization”
Precipitation manipulation and terrestrial carbon cycle: the roles of treatment magnitude, experimental duration, and background climate
<p><b>Aim: </b><a name="_Hlk62140683">Precipitation manipulation experiments have shown diverse terrestrial carbon (C) cycling responses when the ecosystem is subjected to different magnitudes of altered precipitation, various experimental durations, or heterogeneity in local climates. However, how these factors combine to affect C cycle responses to changes in precipitation remains unclear.</a></p> <p><b>Location</b>: Global.</p> <p><b>Time period</b>: 1990–2019.</p> <p><b>Major taxa studied</b>: Terrestrial ecosystems.</p> <p><b>Methods</b>: Using observations from 230 published studies in which precipitation was manipulated and terrestrial C cycling variables were measured, we conducted a global meta-analysis to investigate responses of diverse C cycle processes to altered precipitation, including gross ecosystem productivity, ecosystem respiration, net ecosystem productivity, ecosystem carbon use efficiency, net primary productivity, aboveground and belowground net primary productivity, aboveground and belowground biomass, shoot:root ratio, soil respiration, and soil microbial biomass C.</p> <p><b>Results</b>: <a name="_Hlk50913646"></a><a name="_Hlk62140761">We found that C cycling responses correlated linearly and positively with the magnitude of precipitation treatments, in that C cycling variables increased under increased precipitation, and decreased under decreased precipitation. </a>We also detected that the responses of net primary productivity (NPP) and its aboveground component (ANPP) to altered precipitation weakened with experimental duration. Furthermore, gross ecosystem productivity, ecosystem respiration, and net ecosystem productivity had larger responses to precipitation treatments of greater magnitude over shorter time periods. The response of soil respiration, a key component of the C budget in most terrestrial ecosystems, particularly depended on the background climate. Local temperature and precipitation not only influenced the magnitude of the response of soil respiration to altered precipitation but also affected its sensitivity to the magnitude of the precipitation treatments, with higher sensitivities in the response of soil respiration to treatment magnitude at drier and colder sites.</p> <p><b>Main conclusions</b>: <a name="_Hlk62140806">Our findings highlight the importance of the interactions between the magnitude of precipitation treatments, their duration, and local climate in the response of ecosystem C cycling to precipitation, which is critical to better understanding and projecting ecosystem C processes and functioning under changing precipitation regimes.</a></p>
Soil dissolved organic carbon in terrestrial ecosystems: global budget, spatial distribution and controls
<p><strong>Aims: </strong>Soil dissolved organic carbon (DOC) is a primary form of labile carbon in terrestrial ecosystems and therefore plays a vital role in soil carbon cycling. This study aims to quantify the budgets of soil DOC at biome- and global levels and to examine the variations in soil DOC and their environmental controls. Location: Global Time period: 1981 - 2019 Method: We compiled a global dataset and analyzed the concentration and distribution of DOC across 10 biomes.</p> <p><strong>Results: </strong>Large variations in DOC are found among biomes across space and the soil DOC concentration declines exponentially along soil depths. Tundra has the highest soil DOC concentration in 0 - 30 cm soils (453.75 (95% confidence interval: 324.95 – 633.5) mg·kg-1); whereas tropical and temperate forests have relatively lower DOC concentrations, ranging from 30.20 (24.78 - 36.80) mg·kg-1 to 54.54 (49.77 – 59.77) mg·kg-1. DOC generally accounts for < 1% of total organic carbon in soils, and DOC in 0 - 30 cm contributes more than half of total DOC in 0 - 100 cm soil profile. Furthermore, variations in DOC are primarily controlled by soil texture, moisture, and total organic carbon.</p> <p><strong>Main conclusion: </strong>A global synthesis is combined with an empirical model to extrapolate the DOC concentration along soil profiles across the globe, and global budgets of DOC are estimated as 7.20 Pg C in top 0 - 30 cm and 12.97 Pg C in 0 - 100 cm, respectively, with a considerable variation among biomes. The strong soil texture control but weak TOC control on DOC variations suggest that the investigation of physical protection of soil organic carbon might need to expand to consider the labile C in soils. The global maps of DOC concentration serve as a benchmark for validating land surface models in estimating carbon storage in soils.</p>
Data used, summary and codes: A validation standard for Area of Habitat maps for terrestrial birds and mammals
<p>Birds_AOH_Metadata: Logistic modelling and point validation summary along with pixel summary of AOH maps for Birds .</p> <p>Mammals_AOH_Metadata: Logistic modelling and point validation summary along with pixel summary of AOH maps for Mammals.</p> <p>Column_Names_Index_AOH_Metedata: Description of column names of Birds_AOH_Metadata and Mammals_AOH_Metadata</p> <p>Point_localities_ebird: Latitude and longitude of points per species for birds downloaded from eBird used to validate the AOH maps. </p> <p>Point_localities_gbif: Latitude and longitude of points per species for mammals downloaded from GBIF used to validate the AOH maps. </p> <p>Logistic_Regression_Codes_AOH_Validation: R script for logistic modelling.</p> <p>Point_Validation_Codes_AOH_Validation: R script for point validation of AOH maps.</p> <p>Sample_AOH_Maps: Few sample AOH maps which were validated.</p> <p> </p>
FIG. 7 in Checklist of the terrestrial and freshwater arthropods of French Polynesia (Chelicerata; Myriapoda; Crustacea; Hexapoda)
FIG. 7. — Raiateana oulietea Boulard, 1979 from Raiatea. Photograph: F. Jacq.
FIG. 4 in Checklist of the terrestrial and freshwater arthropods of French Polynesia (Chelicerata; Myriapoda; Crustacea; Hexapoda)
FIG. 4. — Misumenops melloleitaoi Berland,1942 from Tahiti.Photograph:F.Jacq.
FIG. 6 in Checklist of the terrestrial and freshwater arthropods of French Polynesia (Chelicerata; Myriapoda; Crustacea; Hexapoda)
FIG. 6. — Ischnura cardinalis Kimmins, 1929 from Taha'a. Photograph: F. Jacq.
FIG. 2 in Checklist of the terrestrial and freshwater arthropods of French Polynesia (Chelicerata; Myriapoda; Crustacea; Hexapoda)
FIG. 2. — Rhyncogonus sp. from Raiatea. Photograph: F. Jacq.
FIG. 8 in Checklist of the terrestrial and freshwater arthropods of French Polynesia (Chelicerata; Myriapoda; Crustacea; Hexapoda)
FIG. 8. — Rhynchium quinquecinctum tahitense de Saussure, 1867 from Taha'a. Photograph: F. Jacq.
Terrestrial green algae show higher tolerance to dehydration than do their aquatic sister-species: Raw data and analysis files
<p>Diverse algae possess the ability to recover from extreme desiccation without forming specialized resting structures. Green algal genera such as <i>Tetradesmus</i> (Sphaeropleales, Chlorophyceae) contain temperate terrestrial, desert, and aquatic species, providing an opportunity to compare physiological traits associated with the transition to land in closely related taxa. We subjected six species from distinct habitats to three dehydration treatments varying in relative humidity (RH 5%, 65%, 80%) followed by short- and long-term rehydration. We tested the capacity of the algae to recover from dehydration using the effective quantum yield of photosystem II as a proxy for physiological activity. The degree of recovery was dependent both on the habitat of origin and the dehydration scenario, with terrestrial, but not aquatic species, recovering from dehydration. Distinct strains of each species responded similarly to dehydration and rehydration, with the exception of one aquatic strain that recovered from the mildest dehydration treatment. Cell ultrastructure was uniformly maintained in both aquatic and desert species during dehydration and rehydration, but staining with an amphiphilic styryl dye indicated damage to the plasma membrane from osmotically-induced water loss in the aquatic species. These analyses demonstrate that terrestrial <i>Tetradesmus</i> possess a vegetative desiccation tolerance phenotype, making these species ideal for comparative omics studies.</p>
Figure 3 in Deforestation affects biogeographical regionalization: a case study contrasting potential and extant distributions of Mexican terrestrial mammals
Figure 3. Mexican regionalization based on consensus cladogram of t1.
Figure 9 in Abundance, reproduction, and feeding of three species of British terrestrial planarians: Observations over 4 years
Figure 9. Microplana terrestris. The number of hatchlings emerging from 13 viable cocoons.
Figure 2 in Abundance, reproduction, and feeding of three species of British terrestrial planarians: Observations over 4 years
Figure 2. The vegetable plots. Planks are placed around the perimeter.
Fig. 1 in Geosesarma Aedituens, A New Terrestrial Crab (Crustacea: Decapoda: Brachyura: Sesarmidae) From Bali, Indonesia
Fig. 1. Geosesarma aedituens, new species. Holotype, male, MZB Cru 1655.
Figure 10 in Thermal physiology and the origin of terrestriality in vertebrates
Figure 10. Modes of heat gain and loss for a basking lizard (from Pianka & Vitt, 2003).
Figure 8 in Thermal physiology and the origin of terrestriality in vertebrates
Figure 8. Dorsal view of the skeleton of Acanthostega (from Coates, 1996).
Data for: Ecological impacts of extreme climatic events on terrestrial and freshwater biota in the Arctic: A synthesis of current scientific evidence and opportunities
<p>File contains the results of a literature review on the ecological impacts of extreme climatic events on terrestrial and freshwater biota in the Arctic.</p>
Emergence and radiation of distemper viruses in terrestrial and marine mammals - Input files, bash and R codes for analysing PDV and CDV sequence data
<p><span>Canine distemper virus (CDV) and phocine distemper virus (PDV) are major pathogens to terrestrial and marine mammals. Yet little is known about the timing and geographical origin of distemper viruses and to what extent it was influenced by environmental change and human activities. To address this, we i) performed the first comprehensive time-calibrated phylogenetic analysis of the two distemper viruses; ii) mapped distemper antibody and virus detection data from marine mammals collected between 1972-2018; iii) and compiled historical reports on distemper dating back to the 18<sup>th</sup> century. We find that CDV and PDV diverged in the early 17<sup>th</sup> century. Modern CDV strains last shared a common ancestor in the 19<sup>th</sup> century with a marked radiation during the 1930s-50s. Modern PDV strains are of more recent origin, diverging in the 1970s-80s. Based on the compiled information on distemper distribution, the diverse host range of CDV and basal phylogenetic placement of terrestrial morbilliviruses, we hypothesize a terrestrial CDV-like ancestor giving rise to PDV in the North Atlantic. Moreover, given the estimated timing of distemper origin and radiation, we hypothesize a prominent role of environmental change such as the Little Ice Age, and human activities like globalisation and war in distemper virus evolution. </span></p>
Challenges and opportunities of species distribution modelling of terrestrial arthropod predators
<p>Aim. Species distribution models (SDMs) have emerged as essential tools in the equipment of many ecologists, useful to explore species distributions in space and time and answering an assortment of questions related to biogeography, climate change biology and conservation biology. Historically, most SDM research concentrated on well-known organisms, especially vertebrates. In recent years, these tools are becoming increasingly important for predicting the distribution of understudied invertebrate taxa. Here, we reviewed the literature published on main terrestrial arthropod predators (ants, ground beetles and spiders) to explore some of the challenges and opportunities of species distribution modelling in mega-diverse arthropod groups. Location. Global. Methods. Systematic mapping of the literature and bibliometric analysis. Results. Most SDM studies of animals to date have focused either on broad samples of vertebrates or on arthropod species that are charismatic (e.g. butterflies) or economically important (e.g. vectors of disease, crop pests and pollinators). We show that the use of SDMs to map the geography of terrestrial arthropod predators is a nascent phenomenon, with a near-exponential growth in the number of studies over the past 10 years and still limited collaborative networks among researchers. There is a bias in studies towards charismatic species and geographical areas that hold lower levels of diversity but greater availability of data, such as Europe and North America. Conclusions. Arthropods pose particular modelling challenges that add to the ones already present for vertebrates, but they should also offer opportunities for future SDM research as data and new methods are made available. To overcome data limitations, we illustrate the potential of modern data sources and new modelling approaches. We discuss areas of research where SDMs may be combined with dispersal models and increasingly available phylogenetic and functional data to understand evolutionary changes in ranges and range-limiting traits over past and contemporary time scales.</p>
Size-driven preservational and macroecological biases in the latest Maastrichtian terrestrial vertebrate assemblages of North America
<p>The end-Cretaceous (K/Pg) mass-extinction event is the most recent and well-understood of the "Big Five" and triggered establishment of modern terrestrial ecosystem structure. Despite the depth of research into this event, our knowledge of upper Maastrichtian terrestrial deposits globally relies primarily on assemblage-level data limited to a few well-sampled formations in North America, the Hell Creek and Lance formations. These assemblages disproportionally affect our interpretations of this important interval. Multiple investigations have quantified diversity patterns within these assemblages, but the potential effect of formation-level size-dependent taphonomic biases and their implications on extinction dynamics remains unexplored. Here, the relationship between taphonomy and body size of the Hell Creek and Lance formation dinosaurs and mammals are quantitatively analyzed. Small-bodied dinosaur taxa (< 70 kg) are consistently less complete, unlikely to be articulated, and delayed in their description relative to their large-bodied counterparts. Family-level abundance (particularly skeletons) is strongly tied to body mass, and the relative abundance of juveniles of large-bodied taxa similarly is underrepresented. Mammals show similar but non significant trends. The results are remarkably similar to those from the Campanian-aged Dinosaur Park Formation, suggesting a widespread strong taphonomic bias against the preservation of small taxa, which will result in their seemingly depauperate diversity within the assemblage. This taphonomically skewed view of diversity and abundance of small-bodied taxa amidst our best late Maastrichtian samples has significant implications for understanding speciation and extinction dynamics (e.g., size-dependent extinction selectivity) across the K/Pg Boundary.</p>
Data from: WHAT DOES FUNCTIONAL DIVERSITY AND PHYLOGENETIC SIGNAL REVEAL ABOUT SOUTHERN BRAZILIAN TERRESTRIAL FERNS' ENVIRONMENTAL PREFERENCES?
<p><span><strong>Questions</strong></span><span>: Our study focuses on the following questions: </span><span>1) Do the climatic and edaphic conditions of the Southern Brazilian Atlantic Forest impact terrestrial ferns' functional diversity</span><span>? 2) Which morphological functional traits are most relevant for terrestrial ferns in response to climatic and edaphic changes? 3) If there are trait-environment relationships, what adaptive </span><span>eco-evolutionary </span><span>mechanisms can be inferred from them?</span></p> <p><span><strong>Study site</strong></span><span>: Subtropical Atlantic Forest, </span><span>encompassing </span><span>Rio Grande do Sul, Santa Catarina, and Paraná States, Brazil.</span></p> <p><span><strong>Method</strong></span><span>: We analyzed </span><span>eleven</span><span> </span><span>morphological traits related to resistance, competitive advantage, and reproductive success. All traits were analyzed with and without phylogenetic correction to compute multi-trait functional diversity using </span><span>the standardized effect size of mean functional distance and functional composition via the community-weighted mean. Both metrics were weighted by the absolute frequency of species within sites. Subsequently, we identified the most influential climatic or </span><span>edaphic</span><span> drivers based on linear models. To assess the significance of trait-environment relationships, we employed </span><span>a </span><span>permutational</span><span> </span><span>approach</span><span>.</span></p> <p><span><strong>Results</strong></span><span>: The functional diversity of terrestrial ferns correlates with rainfall</span><span> and temperature, with subtle changes when</span><span> taking into account the phylogenetic relationship of species</span><span>. Similarly, competitive and reproductive traits were associated with</span><span> annual</span><span> rainfall</span><span> and rainfall seasonality</span><span>. However, most morphological traits vary independently of </span><span>edaphic</span><span> and climatic factors, regardless</span><span> of</span><span> whether phylogenetic relatedness is</span><span> considered or not. Few traits, specifically related to resistance and competition, were dispersed across the phylogeny and were not linked with any factor evaluated, leaving the question of their true determinants unanswered.</span></p> <p><span><strong>Conclusions</strong></span><span>: Combining functional and phylogenetic information on terrestrial ferns indicates that species morphology response highly depends on the scale ob</span><span>served. Our analyses demonstrate that climatic and not edaphic factors are the primary drivers of trait diversity in terrestrial ferns within the Subtropical Atlantic Forest, influencing most evaluated traits.</span><span> These findings may help predict the distribution of terrestrial ferns amidst the increasing trend of land use and cover changes in the Atlantic Forest domain.</span></p>
ScienceDex guides
Understand access before you commit
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.