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ShareScore release 0.9.0
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71 results for “seasonal streams”
Data from: Seasonal shifts in the importance of bottom-up and top-down factors on stream periphyton community structure
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Seasonality and interspecific competition shape individual niche variation in co-occurring tetra fish in Neotropical streams
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Data from: Seasonal and functional variation in the trophic base of intermittent Alpine streams
<p>In high-altitude Alpine streams, seasonal cycles of snowmelt, glacial melt, and rainfall drive variation in the availability of algal food resources. Yet high-altitude streams also exhibit varying degrees of flow intermittency, from solely winter-drying streams to others that dry periodically throughout summer and autumn. These environmental drivers may interact in different ways to determine the functional trophic base of macroinvertebrates inhabiting high-altitude streams. Here, we estimated the proportional contribution of autochthonous resources to the assimilated diets of benthic macroinvertebrates in 26 headwater streams of Val Roseg, a high Alpine glacial catchment, using stable isotope analysis (<i>δ</i><sup>13</sup>C and <i>δ</i><sup>15</sup>N) of different macroinvertebrate families and their potential food sources. We compared dietary estimates along a gradient of flow intermittency and across 3 seasons (Alpine spring, summer and autumn). Assimilation from autochthonous sources was highest for collector-gatherers and filter feeders in spring, and for grazers in summer. Grazers had higher estimated assimilation from autochthonous sources in intermittent streams than in perennial streams, particularly in summer, while collector-gatherers showed little effect of flow intermittency on dietary estimates. However, responses were highly taxon-specific, with different responses to variation in flow intermittency and season across families within functional groups. Our results suggest that frequent summer drying events represent trade-offs between greater access to algal food resources and a higher risk of desiccation, but that differing life-history and functional feeding traits across macroinvertebrate taxa drive marked variation in the risks or benefits associated with inhabitants of drying streams.</p>
Data for "Thresholds of acidification impacts on macroinvertebrates adapted to seasonally acidified tropical streams"
<p>Dataset associated with the paper "Thresholds of acidification impacts on macroinvertebrates adapted to seasonally acidified tropical streams: potential responses to extreme drought-driven pH declines" (Ganong et al., PeerJ).</p>
Data from: Seasonal and functional variation in the trophic base of intermittent Alpine streams
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Data from: The effect of agriculture on the seasonal dynamics and functional diversity of benthic biofilm in tropical headwater streams
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Seasonal variation in the strength of interference competition among headwater stream predators
<p>1. Vertebrate communities in headwater streams are assumed to be regulated through competitive and predatory interactions. Although documented predation is rare, studies regularly report competitive dominance by fish that, as larger competitors reliant on aquatic habitat, exclude semi-aquatic salamanders to marginal stream habitat. However, it is unclear whether fish interact with stream-breeding salamanders through indirect effects such as, competition for resources (e.g., food or cover) or fear (i.e., threat of predation) nor is it known whether these interactions are consistent through time.</p> <p>2. This study used a novel caging approach to determine if competitive outcomes between a headwater fish and salamanders were regulated primarily through resource depletion (exploitative competition) or behavioural avoidance (interference competition).</p> <p>3. We paired banded sculpin (<i>Cottus carolinae</i>) and larval red salamanders (<i>Pseudotriton ruber</i>) of similar body size in independent flow through mesocosms with intra- and inter-specific pairs allowed to interact physically or non-physically. The experiment was repeated in the fall and in the spring when stream salamander larvae begin to transform into terrestrial juveniles.</p> <p>4. Banded sculpin negatively influenced growth of red salamanders regardless of whether they were allowed to physically interact, suggesting interference competition and behavioural avoidance. This asymmetrical effect was strongest in the spring when salamanders underwent metamorphosis at higher rates in the presence of fish. However, in the fall, the effects were more balanced between the two species with salamanders impacting fish through exploitative competition.</p> <p>5. By studying the temporal relationships between two competitors and using a caging method novel to competition studies, we established that the outcomes of competition are dependent on season and may vary in type relative to the timing of life history events. For this community, these results suggest that outcomes of competition are highly dependent on season and could indicate a biotic mechanism maintaining headwater salamander distributions through source-sink dynamics. Our results also suggest that, in this species interaction, it may be unwarranted to assume that the outcomes of competition at one time represent the complex relationships regulating community interactions.</p>
Seasonal variation in the strength of interference competition among headwater stream predators
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Seasonal growth potential of Oncorhynchus mykiss in streams with contrasting prey phenology and streamflow
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Transcriptome signatures of wastewater effluent exposure in larval zebrafish vary with seasonal mixture composition in an effluent-dominated stream
GEO Series GSE179335. Danio rerio. 58 samples. Type: Expression profiling by high throughput sequencing.
Study data: Seasonal variability in macroinvertebrate assemblages in paired perennial and intermittent streams in Costa Rica
<p>Macroinvertebrate, environmental and hydrological data for one-year study with monthly sampling in paired perennial and intermittent headwater streams in San Luis de Monteverde, Costa Rica.</p>
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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.