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49 results for “keystone species”
Cryptic behaviour and activity cycles of a small mammal keystone species revealed through accelerometry: a case study of Merriam’s kangaroo rats
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Data from: Disruption of natural disturbance regime decouples habitat and life stage in a keystone species
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Data from: Climate change increases predation risk for a keystone species of the boreal forest
<p>Canada lynx (<i>Lynx canadensis</i>) and snowshoe hares (<i>Lepus americanus</i>) form a keystone predator-prey cycle that has large impacts on the North-American boreal forest vertebrate community. Snowshoe hares and lynx are both well-suited for snowy winters, but climate change associated shifts in snow conditions could lower hare survival and alter cyclic dynamics. Using detailed monitoring of snowshoe hare cause-specific mortality, behaviour, and prevailing weather, we demonstrate that hare mortality risk is strongly influenced by variation in snow conditions. Although predation risk from lynx was largely unaffected by snow conditions, coyote (<i>Canis latrans</i>) predation increased in shallow snow. Maximum snow depth in our study area has decreased 33% over the last two decades and predictions based on prolonged shallow snow indicate future hare survival could resemble that seen during population declines. Our results indicate that climate change could disrupt cyclic dynamics in the boreal forest.</p>
Cultural keystone species revisited: are we asking the right questions?
<p class="CxSpFirst"><span><span><span><span><span><span><span><span><span><span><span>The cultural keystone species theory predicts plant species that are culturally important, play a role in resource acquisition, fulfil a psycho-socio-cultural function within a given culture, have high use-value, have an associated naming and terminology in a native language, and a high level of species irreplaceability qualify for cultural keystone species designation. This theory was proposed as a framework for understanding relationships between human societies and species that are integral to their culture. A greater understanding of the dynamic roles of cultural keystones in both ecosystem processes and cultural societies is a foundation for facilitating biocultural conservation. Given such important direct conservation implications of the cultural keystone species theory, we reviewed the use of this theoretical framework across the literature to identify new directions for research. Most studies often emphasized the role of cultural keystones species in human societies but failed to provide a direct test of the theory and underemphasized their potential roles in ecosystem processes. To date, 4.4% of studies that mentioned cultural keystone species provided a direct test of the theory, whereas 47.4% have cited or applied keystone designation to a given species without a direct test of the theory. Studies that tested the cultural keystone species theory primarily occurred in North America. Few studies testing the cultural keystone species theory occurred in Australia and Europe with none occurring in Africa. Most cultural keystone species have been designated as such qualitatively based on researcher subjectivity while other studies have designated keystone species with quantitative indices of cultural importance, often incorporating researcher biases or measuring a few of the cultural keystone status predictors rather than all of them, indicating a lack of consensus in identifying cultural keystone species. Thus, we pose the need for a paradigm shift toward the development of serious and systematic approaches for keystone designation.</span></span></span></span></span></span></span></span></span></span></span></p>
Most cultural importance indices do not predict species cultural keystone status
<p>The use of quantitative indices to quantify the importance of a plant species to human societies is widespread. While quantifi- cation may yield support for standardized methodologies and facilitate generalizations, it is important to examine the potential limitations of these indices. Moreover, because these indices are calculated at the species level, failure to control for phylogenetic relatedness in predictive models may yield misleading conclusions. We test if commonly used cultural importance indices predict species cultural keystone status among the Shipibo-Konibo community of Paoyhan in the Peruvian Amazon. Eleven of the 12 indices were correlated with each other indicating most cultural importance indices are redundant. Most indices did not predict species cultural keystone status. Phylogenetic control improved our models indicating a significant part of the predictive power of even the best index was explained by species shared evolutionary history. Our findings highlight the need for the cautious use of cultural importance indices to infer species cultural keystone status. Newly developed indices should be tested for correlation with existing indices to avoid redundancy.</p>
Data from: Co-restoring keystone predators and foundation species to recover a coastal wetland
<p>Provided here are the following datasets for the paper entitled "Co-restoring keystone predators and foundation species to recover a coastal wetland" upcoming in the Journal of Applied Ecology. </p> <p>1 Proximity to existing Scylla burrows.xlsx This file contains all data for the paper's section "Effects of proximity to existing Scylla burrows on Scirpus restoration" </p> <p>2 Scylla reintroduction.xlsx This file contains all data for the paper's section "Effects of Scylla reintroduction on Scirpus restoration" </p> <p>3 Consumptive and non-consumptive effects.xlsx This file contains all data for the paper's section "Consumptive and non-consumptive effects of Scylla" </p> <p>4 Opening size and food items.xlsx This file contains all data for Fig. S1 and Table S1 in the Supporting Information </p> <p>The metadata for interpreting these data sets are included in the Excel files. </p>
Figure 4 in Review of the interactions of an ecological keystone species, Aechmea distichantha Lem. (Bromeliaceae), with the associated fauna
Figure 4. Bipartite nets showing the relative proportion of interactions of Aechmea distichantha with animals registered for the different taxonomic groups classified according to the (a) use of the plant, (b) trophic level and (c) type (resource involved) of herbivory and ordered following the 'as few crossings of interactions as possible' criteria. Boxes represent the number of morphospecies, and categories and paths represent the number of interactions.
Figure 3 in Review of the interactions of an ecological keystone species, Aechmea distichantha Lem. (Bromeliaceae), with the associated fauna
Figure 3. (a) Number of animal species associated with, and (b) number of interactions established with A. distichantha. In both graphs, the records are ordered taxonomically according to Hyman (1940).
Figure 2 in Review of the interactions of an ecological keystone species, Aechmea distichantha Lem. (Bromeliaceae), with the associated fauna
Figure 2. Evolution of the number of publications from the 1960s to the present grouped in 10-year periods about interactions of Aechmea distichantha with animals in the mid-latitudes of South America.
Datasheets affiliated with thesis "Understanding the adaptive capacity in Populus tremuloides, a keystone North American tree species"
<p>These datasheets are included in the unpublished thesis chapters of the doctoral thesis "Understanding the adaptive capacity in <em>Populus tremuloides</em>, a keystone North American tree species".</p>
Identifying 'climate keystone species' as a tool for conserving ecosystem functioning under climate change
<p><strong>Aim</strong>: Climate change affects ecological communities via impacts on species. The community's response to climate change can be represented as the temporal trend in a climate-related functional property that is quantified using a relevant functional trait. Noteworthy, some species influence this response in the community more strongly than others.</p> <p><strong>Innovation</strong>: Leveraging on the concept of keystone species, we propose that species with a strong effect on the community's functional response to climate change beyond their relative abundance can be considered as 'climate keystone species'. We develop a stepwise tool to determine species' effects on a community's climate response and identify climate keystone species. We quantify the species-specific effect by measuring the difference in the community's climate response with and without the species. Next, we identify climate keystone species as those with a strong residual effect after weighting with their relative abundances in the community.</p> <p><strong>Main</strong> <strong>Conclusions</strong>: To illustrate the use of the stepwise tool with empirical data, we identify climate keystone species that have a strong effect on the change in the average temperature niche in North American bird communities over time and find the identification tool ecologically relevant. Identification of climate keystone species can serve as an additional conservation method to efficiently protect ecosystem functions.</p>
Cultural keystone species revisited: are we asking the right questions?
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Data from: Environmental effects on fine-scale spatial genetic structure in four Alpine keystone forest tree species
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Data from: Climate change increases predation risk for a keystone species of the boreal forest
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Data from: Predictability of the impact of multiple stressors on the keystone species Daphnia
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Identifying ‘climate keystone species’ as a tool for conserving ecosystem functioning under climate change
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Data from: Environmental DNA analysis of river herring in Chesapeake Bay: a powerful tool for monitoring threatened keystone species
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Data from: Thermal tolerance in the keystone species Daphnia magna –a candidate gene and an outlier analysis approach
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Most cultural importance indices do not predict species cultural keystone status
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Data from: Rapid genetic restoration of a keystone species exhibiting delayed demographic response
Genetic founder effects are often expected when animals colonize restored habitat in fragmented landscapes, but empirical data on genetic responses to restoration are limited. We examined the genetic response of banner-tailed kangaroo rats (Dipodomys spectabilis) to landscape-scale grassland restoration in the Chihuahuan Desert of New Mexico, USA. D. spectabilis is a grassland specialist and keystone species. At sites treated with herbicide to remove shrubs, colonization by D. spectabilis is slow and populations persist at low density for ≥10 yrs (≥6 generations). Persistence at low density and low gene flow may cause strong founder effects. We compared genetic structure of D. spectabilis populations between treated sites and remnant grasslands, and we examined how the genetic response to restoration depended on treatment age, area, and connectivity to source populations. Allelic richness and heterozygosity were similar between treated sites and remnant grasslands. Allelic richness at treated sites was greatest early in the restoration trajectory, and genetic divergence did not differ between recently colonized and established populations. These results indicated that founder effects during colonization of treated sites were weak or absent. Moreover, our results suggested founder effects were not mitigated by treatment area or connectivity. Dispersal is negatively density-dependent in D. spectabilis, and we hypothesize that high gene flow may occur early in the restoration trajectory when density is low. Our study shows genetic diversity can be recovered more rapidly than demographic components of populations after habitat restoration, and that founder effects are not inevitable for animals colonizing restored habitat in fragmented landscapes.
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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.