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8 results for “subarctic ecosystems”
Dataset for "Fire in lichen-rich subarctic tundra changes carbon and nitrogen cycling between ecosystem compartments but has minor effects on stocks"
<p>Data that support the findings of the study "Fire disturbance promotes biodiversity of plants, lichens and birds in the Siberian subarctic tundra".</p>
Meteorological responses of carbon dioxide and methane fluxes in the terrestrial and aquatic ecosystems of a subarctic landscape [Data set]
<p>The data set contains carbon dioxide (CO<sub>2</sub>) and methane (CH<sub>4</sub>) fluxes of boreal subarctic landscape and its ecosystems and ecotones, and ancillary meteorological and environmental data, measured at Kaamanen, northern Finland (69°8’ N, 27°16’ E; 155 m a.s.l.), during June 2017 - June 2019. The studied ecosystems and ecotones include: upland pine forest, fen, treed pine bog, sparsely treed pine bog, lakes and string top fen plant community.</p> <p>C_fluxes1b_Heiskanen_et_al_2022.csv includes quality screened, u* filtered and gap-filled eddy covariance ecosystem flux data and modelled pine bog and string top time series utilising eddy covariance and manual flux chamber measurements.</p> <p>C_fluxes2_Heiskanen_et_al_2022.csv includes quality screened daily average lake fluxes from mineral and organic sediment lakes.</p> <p>environmental_data_Heiskanen_et_al_2022.xlsx includes ancillary meteorological and environmental data.</p>
Arctic warming drives striking 21st century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake
<p>Great Slave Lake, one of the world's largest and North America's deepest lake, has undergone an aquatic ecosystem transformation in response to 21st-century accelerated Arctic warming that is unparalleled in at least the past two centuries. Algal remains from a series of high-resolution palaeolimnological records retrieved from the West Basin provide baseline limnological data that we compared to historical limnological and phycological surveys undertaken on Great Slave Lake between the 1940s and 1990s. We document the rapid restructuring of algal community composition ca. 2000 CE that is consistent with recent increases in regional air temperature, as well as declines in ice cover and wind speed, that would collectively alter habitats for aquatic biota (e.g. thermal regime, vertical mixing, turbidity, light and nutrients). This new limnological regime initiated the first observation of scaled chrysophytes and favoured the rapid proliferation of small planktonic cyclotelloid diatoms that replaced the long-established dominance of large filamentous <em>Aulacoseira islandica</em> in West Basin sedimentary assemblages. Such rapid transformations in the primary producers of this socio-ecologically valuable "northern Great Lake" may have widespread implications for the entire food web with unknown consequences for aquatic ecosystem functioning and fisheries, which many northern and Indigenous communities depend upon.</p>
Arctic warming drives striking 21st century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America’s deepest lake
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Data from: Increased duration of aquatic resource pulse alters community and ecosystem responses in a subarctic plant community
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Transpiration from subarctic deciduous woodlands: environmental controls and contribution to ecosystem evapotranspiration
<p><strong>Data from the paper: </strong></p> <p>Sabater, AM, Ward, HC, Hill, TC, et al. Transpiration from subarctic deciduous woodlands: Environmental controls and contribution to ecosystem evapotranspiration. <em>Ecohydrology</em>. 2020; 13:e2190. <span><span><span><u><span><span>https://doi.org/10.1002/eco.2190</span></span></u></span></span></span></p> <p><br><br></p>
Data from: Complex biotic interactions drive long-term vegetation dynamics in a subarctic ecosystem
Predicting impacts of global warming requires understanding of the extent to which plant biomass and production are controlled by bottom-up and top-down drivers. By annually monitoring community composition in grazed control plots and herbivore-free exclosures at an Arctic location for 15 years, we detected multiple biotic interactions. Regular rodent cycles acted as pulses driving synchronous fluctuations in the biomass of field-layer vegetation; reindeer influenced the biomass of taller shrubs, and the abundance of plant pathogenic fungi increased when densities of their host plants increased in exclosures. Two outbreaks of geometrid moths occurred during the study period, with contrasting effects on the field layer: one in 2004 had marginal effects, while one in 2012 severely reduced biomass in the control plots and eliminated biomass that had accumulated over 15 years in the exclosures. The latter was followed by a dramatic decline of the dominant understory dwarf-shrub Empetrum hermaphroditum, driven by an interaction between moth herbivory on top buds and leaves, and increased disease severity of a pathogenic fungus. We show that the climate has important direct and indirect effects on all these biotic interactions. We conclude that long time series are essential to identify key biotic interactions in ecosystems, since their importance will be influenced by climatic conditions, and that manipulative treatments are needed in order to obtain the mechanistic understanding needed for robust predictions of future ecosystem changes and their feedback effects.
Data from: Complex biotic interactions drive long-term vegetation dynamics in a subarctic ecosystem
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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.