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14 results for “community disassembly”
Dataset supplementing Lichtenberg et al. (2017) Foraging traits modulate stingless bee community disassembly under forest loss. Journal of Animal Ecology
<p>This dataset contains data and scripts that supplement the publication</p> <p>Lichtenberg et al. (2017) Foraging traits modulate stingless bee community disassembly under forest loss. Journal of Animal Ecology. DOI 10.1111/1365-2656.12747.</p> <p> </p> <p>Please cite the above article if you use any of the included data or code.</p> <p> </p> <p>Files are described in README.md.</p>
Assembly, persistence, and disassembly dynamics of Quaternary Caribbean frugivore communities
<p>How communities assemble and restructure is of critical importance to ecological theory, evolutionary theory, and conservation, but long-term perspectives on the patterns and processes of community assembly are rarely integrated into traditional community ecology, and the utility of communities as an ecological concept has been repeatedly questioned in part due to a lack of temporal perspective. Through a synthesis of paleontological and neontological data, I reconstruct Caribbean frugivore communities over the Quaternary (2.58 mya – present). Numerous Caribbean frugivore lineages arise during periods coincident with the global origins of plant-frugivore mutualisms. The persistence of many of these lineages into the Quaternary is indicative of long-term community stability, but an analysis of Quaternary extinctions reveals a non-random loss of large-bodied mammalian and reptilian frugivores. Anthropogenic impacts, including human niche construction, underlie the recent reorganization of frugivore communities, setting the stage for continued declines and evolutionary responses in plants that have lost mutualistic partners. These impacts also support ongoing and future introductions of invader complexes: introduced plants and frugivores that further exacerbate native biodiversity loss by interacting more strongly with one another than with native plants or frugivores. This work illustrates the importance of paleontological data and perspectives in conceptualizing ecological communities, which are dynamic and important entities.</p>
Assembly, persistence, and disassembly dynamics of Quaternary Caribbean frugivore communities
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Data from: Disassembly of a tadpole community by a multi-host fungal pathogen with limited evidence of recovery
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Data from: What North America's skeleton crew of megafauna tells us about community disassembly
Functional trait diversity is increasingly used to model future changes in community structure despite a poor understanding of community disassembly's effects on functional diversity. By tracking the functional diversity of the North American large mammal fauna through the End-Pleistocene megafaunal extinction and up to the present, I show that contrary to expectations, functionally unique species are no more likely to go extinct than functionally redundant species. This makes total functional richness loss no worse than expected given similar taxonomic richness declines. However, where current species sit in functional space relative to pre-anthropogenic baselines is not random and likely explains ecosystem functional changes better than total functional richness declines. Prehistoric extinctions have left many extant species functionally isolated and future extinctions will cause even more rapid drops in functional richness.
Data for: Warming rates alter sequence of disassembly in experimental communities
<p class="MsoNormal"><a name="_Hlk71747934"></a><span>This study analyzed patterns of species loss in a community of four rotifers and six ciliates exposed to three rates of extreme warming.</span><span> Immediately prior to each +0.5°C increase in temperature, we sampled replicate communities and identified all surviving species. The sampling temperature at which no further organisms of a given species were observed alive represented the temperature of loss for that species and replicate. Recording the identity of all surviving species at each incremental change in temperature allowed us to both observe the sequence of species loss from the community (i.e., the sequence of disassembly) and also generate a corresponding table of the distinct communities surviving at each temperature. To test the effects of warming rate on the sequence of disassembly, we analyzed the sequence (order) of species loss of the ten species in each replicate. An order of "1" was assigned to the first species lost, "2" to the second, "3" to the third, and so on. To assess the contribution of warming rate to variability in community composition, we compared all of the distinct communities of surviving species that were observed in hourly-, daily- and weekly-rate treatments throughout the period of ramping temperature. The percentage of all distinct communities that were rate-specific (observed in at least one but not all rate treatments) provided a quantitative measure of the contribution of warming rate (per se) to variability in community composition. <span>Downloaded files include: a) temperature of species loss data for hourly, daily and weekly rate replicates, b) order of species loss data for hourly, daily and weekly rate replicates, and c) R code for Monte Carlo analyses. </span></span></p>
Data from: What North America’s skeleton crew of megafauna tells us about community disassembly
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Data from: Community disassembly and invasion of remnant native grasslands under fluctuating resource supply
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Data from: Purple pitcher plant (Sarracenia rosea) dieback and partial community disassembly following experimental storm surge in a coastal pitcher plant bog
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Data for: Warming rates alter sequence of disassembly in experimental communities
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Data from: Community disassembly and disease: realistic – but not randomized – biodiversity losses enhance parasite transmission
Debates over the relationship between biodiversity and disease dynamics underscore the need for a more mechanistic understanding of how changes in host community composition influence parasite transmission. Focusing on interactions between larval amphibians and trematode parasites, we experimentally contrasted the effects of host richness and species composition to identify the individual and joint contributions of both parameters on the infection levels of three trematode species. By combining experimental approaches with field surveys from 147 ponds, we further evaluated how richness effects differed between randomized and realistic patterns of species loss (i.e., community disassembly). Our results indicated that community-level changes in infection levels were due to host species composition, rather than richness. However, when composition patterns mirrored empirical observations along a natural assembly gradient, each added host species reduced infection success by 12 to 55%. No such effects occurred when assemblages were randomized. Mechanistically, these patterns were due to non-random host species assembly/disassembly: while highly competent species predominated in low diversity systems, less susceptible hosts became progressively more common as richness increased. These findings highlight the potential for combining information on host traits and assembly patterns to forecast diversity-mediated changes in multi-host disease systems.
Data from: Quantifying cryptic function loss during community disassembly
1. Emerging theory suggests that the ecosystem-level consequences of anthropogenic pressures depend on how species will be disassembled from ecological communities (i.e., the disassembly rule). Species loss, however, is not the sole ecological cause of ecosystem function loss: behaviors underpinning ecosystem function can also be disrupted by anthropogenic pressures without detectable declines of component species ("cryptic function loss"). 2. Here, we introduce a novel framework that integrates behavioral responses into community disassembly metrics. We applied this framework to freshwater mussel communities (order Unionida) of the midwestern United States, in which intensive agricultural land use threatens stream biota. We combined a field experiment, meta-analysis, and watershed-scale population dataset to assess how excessive sediment concentrations, one of the leading drivers of freshwater biodiversity loss, influence community-level water clearance rates of freshwater mussels via behavioral (changes in mass-specific clearance rate) and population (changes in population density) responses. 3. Our study provided three key insights. First, freshwater mussels exhibited high behavioral sensitivity to increased total suspended solids (TSS) across species (i.e., reduced water clearance rate), whereas population responses were highly species-specific. Second, the behavioral response to increased TSS causes substantial cryptic function loss under stressful conditions: simulated water clearance rates when behavioral response is included can be less than half that of mussel communities with no behavioral response. Finally, simulations revealed that mussel communities are likely to show rapid but consistent rates of ecosystem function loss irrespective of disassembly rules. The similar rates of function loss are due to the uniform behavioral response to TSS that masks the linkage between population sensitivity of a species and its contribution to ecosystem function. 4. Our findings suggest that ignoring behavioral processes may cause non-negligible underestimation of ecosystem function loss during community disassembly, potentially leading to overly optimistic assessments of ecosystem resilience.23-Aug-2019
Data from: Community disassembly and disease: realistic – but not randomized – biodiversity losses enhance parasite transmission
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Data from: Quantifying cryptic function loss during community disassembly
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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.
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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.