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76 results for “habitat shifts”
Data from: Butterflies respond to habitat disturbance in tropical forests through activity shifts
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Consumer movement dynamics as hidden drivers of stream habitat structure: suckers as ecosystem engineers on the night shift
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Soil microbial community shifts explain habitat heterogeneity in two Haloxylon species from a nutrient perspective
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Data From: An artificial habitat increases the reproductive fitness of a range-shifting species within a newly colonized ecosystem
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Data from: Evaluating the vulnerability of Tetracentron sinense habitats to climate-induced latitudinal shifts
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Telemetry validated nitrogen stable isotope clocks identify ocean-to-estuarine habitat shifts in mobile organisms
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Continental-scale shift in foraging habitat use by a highly nomadic species following Australia’s Black Summer megafires
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Ecological consequences of shifting habitat mosaics within and across years in an intermittent stream
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Data from: Adaptive morphological shifts to novel habitats in marine sculpin fishes
Sculpin fishes of the North American Pacific Coast provide an ideal opportunity to examine whether adaptive morphological character shifts have facilitated occupation of novel habitat types because of their well-described phylogeny and ecology. In this group, the basal-rooted species primarily occupy the subtidal habitat, whereas the species in the most distal clades are found in the intertidal. We tested multiple evolutionary models to determine whether changes in body size and changes in number of scales are adaptive for habitat use in sculpins. Based on a statistically robust, highly resolved molecular phylogeny of 26 species of sculpins, in combination with morphometric and habitat affinity data, our analyses show that an adaptive model based on habitat use best explains changes in body size and number of scales. The habitat model was statistically supported over models of neutral evolution, stabilizing selection across all habitats, and three clade-based models. We suggest that loss of scales and reduction of body size in the intertidal may facilitate cutaneous breathing in air when tidepools become hypoxic during low tides. This study demonstrates how the combined use of phylogenetic, ecological and statistical approaches helps to identify traits that are likely adaptive to novel habitats.
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>
Supplementary material 1 from: Pérez-Luque AJ, Zamora R, Bonet FJ, Pérez-Pérez R (2015) Dataset of MIGRAME Project (Global Change, Altitudinal Range Shift and Colonization of Degraded Habitats in Mediterranean Mountains). PhytoKeys 56: 61-81. https://doi.org/10.3897/phytokeys.56.5482
Table S1: Explanation note: Information about transects of the project. Elevation in m a.s.l. Type: AM = Altitudinal migration; FO = Forest; MH = Marginal Habitat. Subtype: AC-e: Abandoned Cropland: edge; AC-i: Abandoned Cropland: inside; Pp-e: Pine plantations: edge; Pp-i: Pine plantations: inside; TE: Treeline Ecotone. Locality: CA = Robledal de Cáñar; SJ = Robledal de San Juan.
Data from: Projecting shifts in thermal habitat for 686 species on the North American continental shelf
Recent shifts in the geographic distribution of marine species have been linked to shifts in preferred thermal habitats. These shifts in distribution have already posed challenges for living marine resource management, and there is a strong need for projections of how species might be impacted by future changes in ocean temperatures during the 21st century. We modeled thermal habitat for 686 marine species in the Atlantic and Pacific oceans using long-term ecological survey data from the North American continental shelves. These habitat models were coupled to output from sixteen general circulation models that were run under high (RCP 8.5) and low (RCP 2.6) future greenhouse gas emission scenarios over the 21st century to produce 32 possible future outcomes for each species. The models generally agreed on the magnitude and direction of future shifts for some species (448 or 429 under RCP 8.5 and RCP 2.6, respectively), but strongly disagreed for other species (116 or 120 respectively). This allowed us to identify species with more or less robust predictions. Future shifts in species distributions were generally poleward and followed the coastline, but also varied among regions and species. Species from the U.S. and Canadian west coast including the Gulf of Alaska had the highest projected magnitude shifts in distribution, and many species shifted more than 1000 km under the high greenhouse gas emissions scenario. Following a strong mitigation scenario consistent with the Paris Agreement would likely produce substantially smaller shifts and less disruption to marine management efforts. Our projections offer an important tool for identifying species, fisheries, and management efforts that are particularly vulnerable to climate change impacts.
Critical transitions and evolutionary hysteresis in movement: Habitat fragmentation can cause abrupt shifts in dispersal that are difficult to revert
<p>Under habitat fragmentation, plant species' survival hinges on the ability of individuals to disperse from one habitat patch to another. While there is evidence that severe habitat fragmentation leads to evolution of reduced dispersal ability and that such decreased mobility is generally detrimental for species' survival, it is unknown whether species adapt via a gradual loss in dispersal ability or via a sudden shift from frequent to infrequent dispersal between patches (i.e., a critical transition). Using both a spatially explicit deterministic and individual-based stochastic model of hydrochorous seed dispersal, we show that a small increase in inter-patch distance can generate an abrupt shift in plant seed dispersal strategy from long to short distances. Most importantly, we found that a substantial increase in connectivity between habitat fragments is required to reverse this loss of long-distance dispersal, due to an evolutionary hysteresis effect. Our theory prompts for re-consideration of the eco-evolutionary consequences of habitat fragmentation as restoring habitat connectivity may require restoration of much higher connectivity levels than currently assumed.</p>
Data from: Projecting shifts in thermal habitat for 686 species on the North American continental shelf
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Data from: The grass was greener: repeated evolution of specialized morphologies and habitat shifts in ghost spiders following grassland expansion in South America
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Data from: Adaptive morphological shifts to novel habitats in marine sculpin fishes
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Data from: Evolutionary shifts in habitat aridity predict evaporative water loss across squamate reptiles
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Data from: Geographic shifts in the effects of habitat size on trophic structure and decomposition
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Data from: Shifting habitats, morphology and selective pressures: developmental polyphenism in an adaptive radiation of Hawaiian spiders
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Does habitat or climate change drive species range shifts?
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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)
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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.