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205 results for “long-term change”
Data from: Short-term climate change manipulation effects do not scale up to long-term legacies: effects of an absent snow cover on boreal forest plants
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Long-term decrease in colouration: A consequence of climate change?
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Long-term vegetation changes in Nardus grasslands indicate eutrophication, recovery from acidification, and management change as the main drivers
<p>Abstract</p> <p>Questions</p> <p>Which trends and patterns of community change occurred in <em>Nardus</em> grasslands over recent decades in parts of the Continental biogeographic region of Germany? Are patterns and trends consistent across two study regions? Do impacts of environmental changes on <em>Nardus</em> grasslands in Central Europe correspond to those identified in the European Atlantic biogeographic region?</p> <p>Location</p> <p>East Hesse Highlands, Germany</p> <p>Methods</p> <p>In 2012-2015, we re-surveyed quasi-permanent plots that had been initially surveyed between 1971 and 1987, and re-measured soil parameters. We tested for differences in species frequency and cover, mean Ellenberg indicator values, species richness, and soil variables. Nitrogen- and sulphur-deposition data were analysed to evaluate possible effects of atmospheric pollutants. We used regression- and redundancy analyses to identify environmental drivers responsible for changes in species composition.</p> <p>Results</p> <p>Across regions, we found significant increases in soil pH, Ellenberg R and N indicator values, plant-nutrient indicators, forbs, species of agricultural grasslands and of fallows. By contrast, the C:N ratio<em>, Nardus</em> grassland specialists, low-nutrient indicators, and graminoids declined. Changes in species composition were related to changes in pH and management. There was a strong decrease in sulphur and a moderate increase in nitrogen deposition, whose local scale pattern did not correlate with changes in soil parameters. However, there was an effect of local NH<sub>y</sub> changes on species composition.</p> <p>Conclusion</p> <p>The findings indicate significant overall eutrophication, a trend towards less acidic conditions and insufficient management, which are widely consistent across our study regions and correspond to recent reports of vegetation changes and recovery from acidification in the Atlantic biogeographic region. We assume the reduced sulphur deposition during recent decades to be a major driver of these changes, combined with increased nitrogen deposition and reduced management intensity. This suggests a large-scale validity of processes that influenced changes in <em>Nardus</em> grasslands of Western and Central Europe.</p>
Interacting Infrastructure Disruptions Due to Environmental Events and Long-Term Climate Change
<p>This dataset contains shapefiles of shoreline protection, flood extent, and roadway disruptions for four shoreline scenarios implemented in South San Francisco Bay. The scenarios were modeled with a hydrodynamic model (Delft3D) and an agent-based traffic model (MATSim) for the manuscript entitled: <em>Interacting Infrastructure Disruptions Due to Environmental Events and Long-Term Climate Change</em> (doi: xxx).</p>
Data from: Mercury exposure in an endangered seabird: long-term changes and relationships with trophic ecology and breeding success
<p class="MsoNoSpacing">Mercury (Hg) is an environmental contaminant which, at high concentrations, can negatively influence avian physiology and demography. Albatrosses (Diomedeidae) have higher Hg burdens than all other avian families. Here, we measure total Hg (THg) concentrations of body feathers from adult grey-headed albatrosses (<i>Thalassarche chrysostoma</i>) at South Georgia. Specifically, we: (i) analyse temporal trends at South Georgia (1989–2013) and make comparisons with other breeding populations; (ii) identify factors driving variation in THg concentrations; and, (iii) examine relationships with breeding success. Mean ± SD feather THg concentrations were 13.0 ± 8.0 µg g<sup>-1</sup> dw, which represents a threefold increase over the past 25 years at South Georgia and is the highest recorded in the <i>Thalassarche</i> genus. Foraging habitat, inferred from stable isotope ratios of carbon (<i>δ</i><sup>13</sup>C), significantly influenced THg concentrations – feathers moulted in Antarctic waters had far lower THg concentrations than those moulted in subantarctic or subtropical waters. THg concentrations also increased with trophic level (<i>δ</i><sup>15</sup>N), reflecting the biomagnification process. There was limited support for the influence of sex, age and previous breeding outcome on feather THg concentrations. However, in males, Hg exposure was correlated with breeding outcome – failed birds had significantly higher feather THg concentrations than successful birds. These results provide key insights into the drivers and consequences of Hg exposure in this globally important albatross population.</p>
Supplementary material 1 from: Cerrato C, Rocchia E, Brunetti M, Bionda R, Bassano B, Provenzale A, Bonelli S, Viterbi R (2019) Butterfly distribution along altitudinal gradients: temporal changes over a short time period. In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 91-118. https://doi.org/10.3897/natureconservation.34.30728
Supplementary data
Verification of the accuracy of the recent 50 years of tree growth and long-term change in intrinsic water-use efficiency using xylem Δ14C and δ13C in trees in an aseasonal tropical rainforest
<p>Growth analysis based on tree-ring chronology is difficult in trees in aseasonal tropical rain forests, because annual growth rings may be unclear or completely absent. Fortunately, tree growth history recorded in xylem tissue is capable of providing valuable information on the responses of trees and forests to past and present environmental changes, including global warming.</p> <p>We have developed a new technique for aseasonal tropical forest trees which derives their growth rates from xylem Δ<sup>14</sup>C, and verified its accuracy. We also determined, from xylem δ<sup>13</sup>C, the intrinsic water-use efficiency (iWUE) in the past 50 years. We analyzed changes in xylem Δ<sup>14</sup>C and δ<sup>13</sup>C in 23 canopy trees of 12 species in 6 families growing in Pasoh Forest Reserve, Malaysia; each stem diameter at breast height (DBH) was recorded 14 times from 1969 to 2011.</p> <p>We found a significant positive relationship between the growth rates determined by <sup>14</sup>C dating and the past DBH data. On the other hand, leaf-internal CO<sub>2</sub> (C<sub>i</sub>) content did not change with increasing atmospheric CO<sub>2</sub> (C<sub>a</sub>). Thus, the iWUE increased significantly over the last 50 years in all the families and species tested.</p> <p>This study showed that the simultaneous measurements of xylem Δ<sup>14</sup>C and δ<sup>13</sup>C could reveal a long-term change in tree growth and iWUE during the past 50 years with high accuracy in various species and/or individuals in aseasonal tropical rainforests exhibiting high species diversity.</p>
Supplementary material 1 from: Mojžišová M, Svobodová J, Kozubíková-Balcarová E, Štruncová E, Stift R, Bílý M, Kouba A, Petrusek A (2022) Long-term changes in the prevalence of the crayfish plague pathogen and its genotyping in invasive crayfish species in Czechia. NeoBiota 74: 105-127. https://doi.org/10.3897/neobiota.74.79087
Table S1
Age-related neural changes underlying long-term recognition of musical sequences - Communications Biology - Leonardo Bonetti - Dataset
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Supplementary material 1 from: Petriccione B, Bricca A (2019) Thirty years of ecological research at the Gran Sasso d'Italia LTER site: climate change in action. In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 9-39. https://doi.org/10.3897/natureconservation.34.30218
: Data type: measurements
Supplementary material 5 from: Monti-Birkenmeier M, Diociaiuti T, Umani SF (2019) Long-term changes in abundance and diversity of tintinnids in the Gulf of Trieste (Northern Adriatic Sea). In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 373-395. https://doi.org/10.3897/natureconservation..29841
: Data type: statistical data
Supplementary material 2 from: Monti-Birkenmeier M, Diociaiuti T, Umani SF (2019) Long-term changes in abundance and diversity of tintinnids in the Gulf of Trieste (Northern Adriatic Sea). In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 373-395. https://doi.org/10.3897/natureconservation..29841
: Data type: occurence
Supplementary material 1 from: Monti-Birkenmeier M, Diociaiuti T, Umani SF (2019) Long-term changes in abundance and diversity of tintinnids in the Gulf of Trieste (Northern Adriatic Sea). In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 373-395. https://doi.org/10.3897/natureconservation..29841
: Data type: statistical data
Supplementary material 3 from: Monti-Birkenmeier M, Diociaiuti T, Umani SF (2019) Long-term changes in abundance and diversity of tintinnids in the Gulf of Trieste (Northern Adriatic Sea). In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 373-395. https://doi.org/10.3897/natureconservation..29841
: Data type: statistical data
Supplementary material 4 from: Monti-Birkenmeier M, Diociaiuti T, Umani SF (2019) Long-term changes in abundance and diversity of tintinnids in the Gulf of Trieste (Northern Adriatic Sea). In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 373-395. https://doi.org/10.3897/natureconservation..29841
: Data type: abundance
Data for: Long-term changes in habitat selection and prey spectrum in a reintroduced Eurasian lynx (Lynx lynx) population in Switzerland
<p>When wild-caught Euan lynx (Lynx lynx) from the Slovak Carpathian Mountains were reintroduced to Central Switzerland in the early 1970s and spread through the north western Swiss Alps (NWA), they faced a largely unfamiliar landscape with strongly fragmented forests, high elevations and intense human land use. For more than 30 years, radiocollared lynx have been monitored during three different project periods (in the 1980s, 1990s and 2010s). Our study explored, how lynx over generations have learned to adjust to the alpine environment. We predicted that (1) lynx nowadays select more strongly for open habitats, higher elevations and steep slopes compared to the early stages of recolonization and that (2) consequently, there were significant changes in the Eurasian lynx' prey spectrum. To test our predictions, we analysed telemetry data (VHF, GPS) of 13 adult resident lynx in the NWA over 35 years, using Resource Selection Functions. Furthermore, we compared kills recorded from different individuals inhabiting the same region during three project periods. In general, lynx preferred forested areas, but over the years, they avoided open habitat less. Compared to the early stage of the recolonization, lynx in the most recent project period selected for higher elevations and the proportion of chamois in their prey spectrum surmounted that of roe deer. Potential driving factors for the observed changes could be increasing tolerance to human presence, intraspecific competition or fitness benefits through exploitation of new resources. Long-term studies like ours provide important insight into how animals can respond to sudden environmental changes e.g., in the course of translocations into new areas or anthropogenic alterations of their habitats.</p>
Long-term environmental changes in the Canadian boreal zone: Synthesizing temporal trends from lake sediment archives to inform future sustainability
<ul> <li>Lead (Pb) concentration and chlorophyll <em>a</em> data</li> </ul> <p>Original publication: Gros, M., Zilkey D. R., Griffiths, K. T., Pham, J., MacKeigan, P. W., Taranu, Z. E., Aulard, C., Baud, A., Garner, R. E., Ghanbari, H., Lachapelle, M., Monchamp, M-È, Paquette, C., Antoniades, D., Francus, P., Smol, J. P. & Gregory-Eaves, I. (2023). Long-term environmental changes in the Canadian boreal zone: Synthesizing temporal trends from lake sediment archives to inform future sustainability. <em>Environmental Reviews</em>, <em>31</em>(3). https://doi.org/10.1139/er-2023-0006.</p>
Enjoyment Mediates Long-term Changes in Physical Activity Level in a Physical Activity on Prescription Intervention.
ClinicalTrials.gov study NCT06749249. IPD Sharing: YES. Countries: 0. Publications: 21.
Fish and Marine Fatty Acids, Genetic Signatures of Diet Adaptation, and Long-term Weight Changes
ClinicalTrials.gov study NCT03348566. IPD Sharing: NO. Countries: 0. Publications: 2.
Long-term Lifestyle Change and Testosterone Replacement
ClinicalTrials.gov study NCT03256292. IPD Sharing: YES. Countries: 1. Publications: 0.
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.