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40 results for “foraging decisions”
Data from: Foraging decisions with conservation consequences: Interaction between beavers and invasive tree species
<p><span>Herbivore species can either hinder or accelerate the invasion of woody species through selective utilization. Therefore, an exploration of foraging decisions can contribute to the understanding and forecasting of woody plant invasions. Despite the large distribution range and rapidly growing abundance of beaver species across the Northern Hemisphere, only a few studies focus on the interaction between the beaver and invasive woody plants. </span></p> <p><span>We collected data on the woody plant supply and utilization at 20 study sites in Hungary, at two fixed distances from the water. The following parameters were registered: taxon, trunk diameter, type of utilization, and carving depth. Altogether 5401 units (trunks and thick branches) were identified individually. We developed a statistical protocol that uses a dual approach, combining whole-database and transect-level analyses to examine foraging strategy.</span></p> <p><span>Taxon, diameter, and distance from water all had a significant effect on foraging decisions. The order of preference for the four most abundant taxa was: <em>Populus </em>spp. (softwood), <em>Salix </em>spp. (softwood), <em>Fraxinus pennsylvanica</em></span> <span>(invasive hardwood),<em> Acer negundo</em> (invasive hardwood). The diameter influenced the type of utilization, as units with greater diameter were rather carved or debarked than felled. According to the central-place foraging strategy, intensity of the foraging decreased with the distance from the water, while both the taxon and diameter selectivity increased. This suggests stronger modification of the woody vegetation directly along the waterbank, together with a weaker impact further from the water. </span></p> <p><span>In contrast to invasive trees, for which utilization occurred almost exclusively in the smallest diameter class, even the largest softwood trees were utilized by means of carving and debarking. This may lead to the gradual loss of softwoods or the transformation of them into shrubby form. After the return of the beaver, mature stages of softwood stands and thus the structural heterogeneity of floodplain woody vegetation could be supported by the maintenance of sufficiently large active floodplains. </span></p> <p><span>The beaver accelerates the shift of the canopy layer's species composition towards invasive hardwood species, supporting the enemy release hypothesis. However, the long-term impact will also depend on how plants respond to different types of utilization and on their ability to regenerate, which are still unexplored issues in this environment. Our results should be integrated with knowledge about factors influencing the competitiveness of the studied native and invasive woody species to support floodplain conservation and reconstruction.</span></p>
Data from: Acoustic risk balancing by marine mammals: anthropogenic noise can influence the foraging decisions by seals
<p class="MsoCommentText">Avoidance of anthropogenic sounds has been measured in many species. The results, which are typically based on observations in limited exposure contexts, are frequently used to inform policy and the regulation of industrial activities. However, the occurrence and magnitude of avoidance may be a consequence of complex risk-balancing decisions made by animals. The importance of the factors in decision-making, such as perceived risks associated with the sounds or prey quantity and quality during sound exposure, is unknown.</p> <p class="MsoCommentText">Here we address this knowledge gap by measuring the relative influence of perceived risk of a sound (silence, <span>pile driving, and a tidal turbine)</span> and prey patch quality on decision making and foraging success in grey seals <span>(<i>Halichoerus grypus</i>). </span>Seals were given access to two <span>underwater 'prey patches' </span>in an experimental pool <span>where fish were delivered at controlled rates to simulate a </span>low density (LD) and a high density (HD) prey patch. Acoustic playbacks were made using an underwater speaker above one of the prey patches (randomised during the study), and three decision and foraging metrics (foraging duration, foraging effort allocation between the prey patches, and foraging success) were measured.</p> <p>Foraging success was highest during silent controls and was similar regardless of speaker location (LD/HD). Under the tidal turbine and pile driving treatments, foraging success was similar to the controls when the speaker was located at the HD prey patch but was significantly reduced (~16-28% lower) when the speaker was located at the LD prey patch. Foraging decisions by the seals were consistent with a risk/profit balancing approach. Avoidance rates depend on the quality of the prey patch as well as the perceived risk.</p> <p>Policy implications: The results suggest that foraging context is important when interpreting avoidance behaviour and should be considered when predicting the effects of anthropogenic activities. For example, sound exposure in different prey patch qualities may result in markedly different avoidance behaviour, potentially leading to contrasting predictions of impact in Environmental Assessments. We recommend future studies explicitly consider foraging context, and other contextual factors such as behavioural state (e.g. foraging or travelling) and habitat quality.</p>
Data from: Predation risk perception, food density and conspecific cues shape foraging decisions in a tropical lizard
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Data from: Taking a trip to the shelf: behavioural decisions are mediated by the proximity to foraging habitats in the black-legged kittiwake
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Data from: Exploring foraging decisions in a social primate using discrete choice models
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Data from: Foraging decisions with conservation consequences: Interaction between beavers and invasive tree species
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Data from: Experience matters: context-dependent decisions explain spatial foraging patterns in the deposit-feeding crab Scopimera intermedia
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Data from: Moving on with foraging theory: incorporating movement decisions into the functional response of a gregarious shorebird
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Beaked whales and state-dependent decision-making: how does body condition affect the trade-off between foraging and predator avoidance?
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Data from: Acoustic risk balancing by marine mammals: anthropogenic noise can influence the foraging decisions by seals
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Linking foraging decisions to residential yard bird composition
Urban bird communities have higher densities but lower diversity compared with wildlands. However, recent studies show that residential urban yards with native plantings have higher native bird diversity compared with yards with exotic vegetation. Here we tested whether landscape designs also affect bird foraging behavior. We measured the amount of resources remaining, or giving-up densities (GUD) for final foragers on artificial food patches in residential yards in Phoenix, AZ, USA. We assessed how two yard designs (mesic: lush, exotic vegetation; xeric: drought-tolerant and native vegetation) differed in foraging costs. Further, we developed a statistical model to calculate GUDs for every species visiting the patch. Birds foraging in mesic yards depleted patches to a lower level (i.e. had lower GUDs) than birds foraging in xeric yards. After accounting for bird densities, the lower GUDs in mesic yards appeared largely driven by invasive and synanthropic species. Furthermore, yard design affected individual species behavioral responses. Species visiting trays in both yard designs had lower GUDs in mesic yards. Differences in the missed opportunity (alternative resources more abundant in xeric yards) and the digestive cost (moist conditions in mesic yards) both contributed to our results while predation costs did not. Enhancing the GUD method with our statistical model provided insights into how individual species and bird densities influenced the GUD. If the described differences we found in foraging behavior are indicative of differences in habitat quality, then this would lend additional support for native landscapes to help reverse the loss of urban bird diversity.
Data from: State dependence, personality, and plants: light-foraging decisions in Mimosa pudica (L.)
Plants make foraging decisions that are dependent on ecological conditions, such as resource availability and distribution. Despite the field of plant behavioral ecology gaining momentum, ecologists still know little about what factors impact plant behavior, especially light-foraging behavior. We made use of the behavioral reaction norm approach to investigate light foraging in a plant species that exhibits rapid movement: Mimosa pudica. We explored how herbivore avoidance behavior in M. pudica (which closes its leaflets temporarily when disturbed) is affected by an individual's energy state and the quality of the current environment and also repeatedly tested the behavior of individuals from two seed sources to determine whether individuals exhibit a "personality" (i.e., behavioral syndrome). We found that when individuals are in a low-energy state, they adopt a riskier light-foraging strategy, opening leaflets faster, and not closing leaflets as often in response to a disturbance. However, when plants are in a high-energy state, they exhibit a plastic light-foraging strategy dependent on environment quality. Although we found no evidence that individuals exhibit behavioral syndromes, we found that individuals from different seed sources consistently behave differently from each other. Our results suggest that plants are capable of making state-dependent decisions and that plant decision making is complex, depending on the interplay between internal and external factors.
Quantity over quality? Prey-field characteristics influence the foraging decisions of little penguins (Eudyptula minor) - b
<p>Camera data for obtaining results for paper</p>
Quantity over quality? Prey-field characteristics influence the foraging decisions of little penguins (Eudyptula minor) - a
<p>Camera data for obtaining results for paper</p>
Data from: Gut microbiota modifies olfactory-guided microbial preferences and foraging decisions in Drosophila
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Data from: Larval foraging decisions in competitive heterogeneous environments accommodate diets that support egg-to-adult development in a polyphagous fly
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Data from: State dependence, personality, and plants: light-foraging decisions in Mimosa pudica (L.)
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Data from: Group foraging decisions in nutritionally differentiated environments
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Data from: The influence of preceding dive cycles on the foraging decisions of Antarctic fur seals
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Honey bee foraging decisions are influenced by pear flower volatiles
<p>Data of honey bee foraging bias on pear flowers.</p>
ScienceDex guides
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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.