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.
51
datasets available to search
ShareScore release 0.9.0
Dataset results
51 results for “functional turnover”
Post-drought community turnover and functional redundancy in a tropical forest understorey
<p>Drought events are increasingly frequent, threatening the biodiversity of tropical forests. The understorey comprises a large fraction of the total plant species richness of these systems with the presence of Individual plants of some highly diverse Angiosperm families are patchily organized in the understorey of these communities. Here we quantified the effects of a drought on abundance and functional structures and on the ecosystem functioning of these patches Rubiaceae assemblages along a topographic gradient. We show that swarms of species can maintain biological diversity and stability in ecosystem functioning under drought in the understorey of a tropical forest. (Published in Journal Vegetation Science; Funded by Fundação de Amparo à Pesquisa e Inovação do Espírito Santo, FAPES).</p> <p>If you have any query, write to: karinnasantos0@gmail.com</p>
Exploring functional flow heterogeneity in regulated flow regime: fish species turnover along hydraulic gradients in an artificial waterway network
<p><span>Humans have altered river flows and lateral aquatic habitats. The expansion of agriculture in floodplains has resulted in landscapes dominated by irrigated farmland. A key challenge in water management is to conserve existing ecological communities and habitat heterogeneity, while simultaneously maintaining engineered infrastructure for agriculture. In this study, we focused on an artificial channel network for irrigation with a regulated flow regime and its function as habitat for various fish species. Differences of hydraulic conditions among channels and compositional changes in fish species were examined to clarify functional flow heterogeneity. Species turnover was analyzed using pairwise Simpson dissimilarity among sampling reaches. Species turnover was positively associated with Froude number (flow intensity) differences at intermediate discharges, and with differences in cross-sectional areas (flow magnitude) at low discharges. Drastic changes in inflows should be considered for the effective conservation of flow heterogeneity, even under a regulated flow regime. Improved engineering design to manage the hydraulic environment is one option for maintaining the ecological value of lateral waterbodies in human-dominated landscapes. Our findings provide insights into the importance of functional flow heterogeneity to conserve fish species diversity.</span></p>
Temporal turnover of viral biodiversity and functional potential in intertidal wetlands
<p>The study dataset contains 3,238 viral contigs (Intertidal_time_mVCs.fa), 1,911 vOTUs (Intertidal_time_vOTUs.fa), 41,363 vPCs (Intertidal_time_vPCs.protein), and 1,462 MAGs (Intertidal_time_MAGs.zip) obtained from 36 mudflat intertidal sediment samples located in Qingdao, China (36.46° N, 120.75° E), in a time-series manner (every two months) spanning from August 2020 to June 2021.</p> <p>If this study dataset is useful, please cite: Ji et al. Temporal turnover of viral biodiversity and functional potential in intertidal wetlands. 2024. <a href="https://doi.org/10.1038/s41522-024-00522-8" rel="nofollow">https://doi.org/10.1038/s41522-024-00522-8</a>. </p> <p>For any other dataset/analysis inquiries, please contact me: jimengzhi@mail.sdu.edu.cn.</p> <p>The R code for this manuscript can be obtained from <a href="https://github.com/MengzhiJ/Temporal-turnover-of-viral-biodiversity-and-functional-potential-in-intertidal-wetlands">https://github.com/MengzhiJ</a>.</p>
The Effect of Liraglutide on Bone Turnover, Bone Mass and Bone Cell Function
ClinicalTrials.gov study NCT02473809. IPD Sharing: UNDECIDED. Countries: 1. Publications: 7.
Effect of Intense Training on Ovarian Function and Bone Turnover
ClinicalTrials.gov study NCT02224976. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Data from: Species turnover and invasion of dominant freshwater invertebrates alter biodiversity-ecosystem function relationship
Open the record for dataset details and reuse information.
Long-term warming affects ecosystem functioning through species turnover and intraspecific trait variation
Open the record for dataset details and reuse information.
Exploring functional flow heterogeneity in regulated flow regime: fish species turnover along hydraulic gradients in an artificial waterway network
Open the record for dataset details and reuse information.
Dynamic feedbacks among tree functional traits, termite populations and deadwood turnover
Open the record for dataset details and reuse information.
Diversity and distribution across a large environmental and spatial gradient: evaluating the taxonomic and functional turnover, transitions and environmental drivers of benthic diatom communities
<p><b><span>Aim:</span></b> Global biodiversity loss has raised interest in understanding variation in diversity at different scales. Especially studies conducted across large spatial gradients are crucial, because they can increase perspectives on how ecological patterns change relative to environmental factors, and facilitate predictions of possible responses to environmental change. We explored the full extent of a brackish sea to test the hypotheses that (i) benthic communities are defined by species' limited ranges, controlled by varying drivers along a large environmental gradient, (ii) the responses of taxonomic and functional community composition and turnover to the environmental gradient are different, thus highlighting the need to include both measures in ecological studies, and (iii) diversity reaches the minimum at intermediate salinities (Remane curve) due to the low adaptation of freshwater and marine species.</p> <p><b>Location</b>: A large environmental and spatial gradient spanning the entire Swedish coastline (ca. 2300 km; salinity 1.2-27.6), the Baltic Sea</p> <p><b><span>Time period</span></b><span>: August 2018</span></p> <p><b><span>Major taxa studied:</span></b><span> Benthic diatoms</span></p> <p><b><span>Methods</span></b><span>: </span>We assessed environmental drivers for the communities and calculated the taxonomic and functional alpha and beta diversity along the gradient. We also compared the taxonomic and functional composition and diversity of communities between areas with different salinity.</p> <p><b><span>Results</span></b><span>:</span> We found support for the hypothesis of limited species ranges, as taxonomic beta diversity, mainly induced by changes in salinity and climate, was high, whereas functional beta diversity remained considerably lower, and the composition and diversity of communities, as well as environmental drivers controlling the communities, differed between regions with different salinity. The lowest taxonomic diversity was found at intermediate salinities of 5-6.</p> <p><b><span>Main conclusions:</span></b> These findings advance understanding of large-scale patterns of benthic diversity, emphasize the importance of large gradient studies for a better understanding of general ecological patterns, and highlight the vulnerability of brackish water ecosystems as ecologically important tipping point realms.</p>
Data from: Deterministic tropical tree community turnover: evidence from patterns of functional beta diversity along an elevational gradient
Explaining the mechanisms that produce the enormous diversity within and between tropical tree communities is a pressing challenge for plant community ecologists. Mechanistic hypotheses range from niche-based deterministic to dispersal-based stochastic models. Strong tests of these hypotheses require detailed information regarding the functional strategies of species. A few tropical studies to date have examined trait dispersion within individual forest plots using species trait means in order to ask whether coexisting species tend to be more or less functionally similar than expected given a null model. The present work takes an alternative approach by: (i) explicitly incorporating population-level trait variability; and (ii) quantifying the functional beta diversity in a series of 15 tropical forest plots arrayed along an elevational gradient. The results show a strong pattern of decay in community functional similarity with elevation. These observed patterns of functional beta diversity are shown to be highly non-random and support a deterministic model of tropical tree community assembly and turnover.
Data from: Multi-trophic β-diversity mediates the effect of environmental gradients on the turnover of multiple ecosystem functions
1. Much effort has been devoted to better understanding the effects of environment and biodiversity on ecosystem functioning. However, few studies have moved beyond measuring biodiversity as species richness of a single group and/or focusing on a single ecosystem function. While there is a growing recognition that along environmental gradients, the compositional turnover of multiple trophic groups influences not only productivity but multiple ecosystem functions, we do not know yet which components of multi-trophic β-diversity influence which ecosystem functions. 2. Here, we captured the biodiversity found in soils using environmental DNA to study total soil multi-trophic β-diversity (between all taxa regardless of their trophic group association), horizontal β-diversities (β-diversities within trophic groups) and vertical β-diversity (β-diversity across trophic groups) along a 1000-m elevational gradient in the French Alps. Using path analyses, we quantified how these β-diversity components mediate the effects of environmental turnover on the turnover of multiple ecosystem functions (i.e. productivity, N-cycling, N-leaching) and overall multifunctionality. 3. While we found a strong direct effect of soil properties on the turnover of multiple ecosystem functions, we also found an indirect effect of climate and soil properties through multi-trophic β-diversity. More specifically, only total multi-trophic β-diversity and the horizontal β-diversity of saprophytic fungi were strongly related to the turnover of multifunctionality and, to a lower extent, the turnover of productivity and N-cycling. Our results suggest that decomposition processes and resulting nutrient availability are key to understand how ecosystem functions change along soil properties and climatic gradients in alpine ecosystems. 4. Beyond alpine systems, our study stresses the paramount importance of considering the mediating role of multi-trophic diversity in environmental change impacts on different ecosystem functions and their multifunctionality.
Data from: Drought intensification drives turnover of structure and function in stream invertebrate communities
Climatic extremes are becoming more frequent and intense across much of the globe, potentially transforming the biodiversity and functioning of affected ecosystems. In freshwaters, hydrological extremes such as drought can regulate beta diversity, acting as powerful environmental filters to dictate the complement of species and functional traits found at local and landscape scales. New methods that enable beta diversity and its functional equivalent to be partitioned into turnover (replacement of species/functions) and nestedness-resultant (gain/loss of species/functions) components may offer novel insights into the parallel impacts of drought on ecosystem structure and function. Using a series of artificial channels (mesocosms) designed to mimic perennial headwater streams, we experimentally manipulated streamflows to simulate a gradient of drought intensity. We then modelled taxonomic and functional turnover and nestedness of macroinvertebrate communities along this gradient, validating direct gradient approaches (bootstrapping, Mantel tests) against null models of nestedness. Drought intensification produced significant environmental distance decay trends (i.e. communities became increasingly taxonomically and functionally dissimilar the more differentially disturbed by drought they were). Taxonomic distance decay was primarily driven by turnover, while the functional trend reflected a combination of richness differences and turnover at different points along the gradient. Taxonomic and functional distance decay slopes were not significantly different, implying that communities were functionally vulnerable to drying. The increased frequency and intensity of droughts predicted under most climate change scenarios could thus profoundly modify not only the structure of running water invertebrate communities, but also the ecosystem functions they underpin.
Data from: Nitrogen enrichment and warming shift community functional composition via distinct mechanisms: the role of intraspecific trait variability and species turnover
<p>1. Global change factors may shift community functional composition by driving species turnover (species occurrence and species relative abundance) and intraspecific trait variability. However, their relative contribution in determining the functional response of community to global change, especially nitrogen enrichment and warming, remains unclear.</p> <p>2. We conducted a fully factorial field experiment in a Tibetan alpine meadow to examine responses of plant community functional composition to nitrogen enrichment and warming by quantifying seven plant functional traits in each plot. Using the sum of squares decomposition, we further disentangled the relative contribution of intraspecific trait variability and species turnover to changes in community functional composition.</p> <p>3. We found that nitrogen enrichment caused a shift of plant community toward a more resource-acquisitive strategy, while warming resulted in a shift toward a more resource-conservative strategy. Plant intraspecific trait variability controls shifts in community functional composition in response to nitrogen enrichment, whereas species turnover (especially change in species relative abundance) mainly explains warming-induced shifts. Nitrogen enrichment and warming did not show significant interactive effects on plant functional composition.</p> <p>4. These findings suggest that nitrogen enrichment and warming can alter community functional composition of alpine meadow through distinct mechanisms. Plant intraspecific trait variability confers functional resilience of Tibetan alpine meadows under nitrogen enrichment, but warming could induce significant turnover of species that pronouncedly impacts community functioning in this highland ecosystem.</p>
Intraspecific trait variation and species turnover mediate grazing impacts on above- and below-ground functional trait composition of plant communities
<ol> <li>Although grazing has significant impacts on plant functional traits and community composition in grasslands, few studies have simultaneously explored how plant above- and below-ground traits and community functional composition respond to grazing.</li> <li>Using a grazing manipulation experiment with seven levels of grazing intensity (0, 1.5, 3.0, 4.5, 6.0, 7.5, and 9 sheep ha<sup>-1</sup>) in the Inner Mongolia grassland, we partitioned the roles of intraspecific trait variation (ITV) and species turnover underlying the grazing induced changes in above- and below-ground functional trait composition of plant communities. Six aboveground traits (i.e. plant height, plant aboveground biomass, plant density, leaf area, specific leaf area (SLA) and leaf density) and three root traits (average root diameter, ARD; specific root length, SRL; and root tissue density, RTD) of the first-, second- and third-order roots (1<sup>st</sup>-, 2<sup>nd</sup>-, and 3<sup>rd</sup>-) were measured at the plant individual level. </li> <li>At the community level, plant above-ground traits shifted towards grazing avoidance strategy (e.g. plant height and leaf area decreased), and below-ground traits shifted towards conservative strategy (i.e. 1<sup>st</sup>-SRL and 2<sup>nd</sup>-SRL decreased, 1<sup>st</sup>-RTD and 2<sup>nd</sup>-ARD increased) with increasing grazing intensity. Functional tradeoffs were found between plant individual biomass and plant density, and between leaf area and leaf density under grazing. However, community-weighted mean SRL (SRL<sub>CWM</sub>) and ARD (ARD<sub>CWM</sub>) of different root orders exhibited functional coordination under grazing pressure. SLA<sub>CWM</sub> and SRL<sub>CWM</sub> also showed synergistic responses to grazing.</li> <li> The ITV plays a predominant for the changes in above- and below-ground functional trait composition at the community level. However, changes in mean trait values among plant species with different resource use strategies were mainly triggered by species turnover. For species with different resource use strategies, grazing exhibited a coordinated effects on ITV but an offset effect on species turnover.</li> <li> <i>Synthesis.</i> Our results demonstrate that both the above- and below-ground trait composition of plant communities shifted toward conservative strategy under long-term grazing. This study highlights the effects of ITV and species turnover that govern the grazing-induced changes in functional trait composition of plant communities, and has important implications for grazing management in semiarid grasslands.</li> </ol>
Resistance Exercise and Knee Osteoarthritis Pain, Functional Impairment and Cartilage Turnover
ClinicalTrials.gov study NCT01245283. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Intraspecific trait variation and species turnover mediate grazing impacts on above- and below-ground functional trait composition of plant communities
Open the record for dataset details and reuse information.
Diversity and distribution across a large environmental and spatial gradient: evaluating the taxonomic and functional turnover, transitions and environmental drivers of benthic diatom communities
Open the record for dataset details and reuse information.
Data from: Drought intensification drives turnover of structure and function in stream invertebrate communities
Open the record for dataset details and reuse information.
Data from: Multi-trophic β-diversity mediates the effect of environmental gradients on the turnover of multiple ecosystem functions
Open the record for dataset details and reuse information.
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.