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6 results for “species range-shifts”
Data From: An artificial habitat increases the reproductive fitness of a range-shifting species within a newly colonized ecosystem
<p>When a range-shifting species colonizes an ecosystem it has not previously inhabited, it may experience suboptimal conditions that challenge its continued persistence and expansion. Some impacts may be partially mitigated by artificial habitat analogues: artificial habitats that more closely resemble a species' historic ecosystem than the surrounding habitat. If conditions provided by such habitats increase reproductive success, they could be vital to the expansion and persistence of range-shifting species. We investigated the reproduction of the mangrove tree crab <i>Aratus pisonii </i>in its historic mangrove habitat, the suboptimal colonized salt marsh ecosystem, and on docks within the marsh, an artificial mangrove analogue. Crabs were assessed for offspring production and quality, as well as measures of maternal investment and egg quality. <i>Aratus pisonii</i> found on docks produced more eggs, more eggs per unit energy investment, and higher quality larvae than conspecifics in the surrounding salt marsh. Yet, crabs in the mangrove produced the highest quality larvae. Egg lipids suggest these different reproductive outcomes result from disparities in the quality of diet-driven maternal investments, particularly key fatty acids. This study suggests habitat analogues may increase the reproductive fitness of range-shifting species allowing more rapid expansion into, and better persistence in, colonized ecosystems.</p>
Data From: An artificial habitat increases the reproductive fitness of a range-shifting species within a newly colonized ecosystem
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Predators balance consequences of climate-change induced habitat shifts for range-shifting and resident species
<p>While many species distributions are shifting poleward or up in elevation in response to a changing climate, others are shifting their habitats along localized gradients in environmental conditions as abiotic conditions become more stressful. Whether species are moving across regional or local environmental gradients in response to climate change, range-shifting species become embedded in established communities of competitors and predators. The consequences of these shifts for both resident and shifting species are often unknown, as it can be difficult to isolate the effects of multiple species interactions.</p> <p>Using a model system of insects in high-elevation ponds in the Rocky Mountains of Colorado, we sought to disentangle the effects of predation and intraguild interactions on the survival and development of a semi-permanent pond resident caddisfly <em>Limnephilus externus</em> and the habitat-shifting caddis <em>Asynarchus nigriculus</em> that is being forced into semi-permanent ponds as temporary ponds dry too quickly to complete development.</p> <p>We conducted a manipulative in-situ pond cage experiment in which <em>L. externus</em> and <em>A. nigriculus</em> caddisfly larvae in single-species treatments and together were exposed to the presence/absence of predatory Dytiscus diving beetle larvae. This approach allowed us to isolate the effects of intraguild interactions and predation on the survival and development of both the resident and habitat-shifting species.</p> <p>We found that intraguild interactions had strong negative effects on the resident and habitat-shifting species. Intraguild interactions reduced the survival of the resident <em>L. externus</em> and increased the variation in survival of the shifting <em>A. nigriculus</em>. However, Dytiscus predators reduced these negative effects, stabilizing the community by increasing <em>L. externus</em> survival and reducing variation in <em>A. nigriculus</em> survival. We also found that intraguild interactions reduced <em>L. externus</em> biomass but resulted in increased <em>A. nigriculus</em> development. <em>A. nigriculus</em> development was also increased by predation.</p> <p>Our results show that strong intraguild interactions between resident and shifting species are likely to have negative consequences for both species. However, the presence of predators reduces these negative consequences of the habitat shift on both the resident and the shifting.</p>
Predators balance consequences of climate-change induced habitat shifts for range-shifting and resident species
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Elevation alters outcome of competition between resident and range-shifting species
<p>Species' geographic range shifts towards higher latitudes and elevations are among the most frequently reported consequences of climate change. However, the role of species interactions in setting range margins remains poorly understood. We used cage experiments in ponds to test competing hypotheses about the role of abiotic and biotic mechanisms for structuring range boundaries of an up-slope range-shifting caddisfly <i>Limnephilus picturatus. </i>We found that competition with a ubiquitous species <i>Limnephilus externus</i> significantly decreased <i>L. picturatus</i> survival and emergence at subalpine elevations supporting the notion that species interactions play a critical role in determining up-slope range limits. However, without competitors, <i>L. picturatus</i> survival was greater at high-elevation than low-elevation sites. This was contrary to decreases in body mass (a proxy for fecundity) with elevation regardless of the presence of competitors. We ultimately show that species interactions can be important for setting up-slope range margins. Yet our results also highlight the complications in defining what may be abiotically stressful for this species and the importance of considering multiple demographic variables. Understanding how species ranges will respond in a changing climate will require quantifying species interactions and how they are influenced by the abiotic context in which they play out.</p>
Elevation alters outcome of competition between resident and range-shifting species
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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.