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13,276 results for “IT management”
Plant management but not fertilization mediates soil carbon emission and microbial community composition in subtropical Eucalyptus plantations
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Data from: Managing friends and foes: Sanctioning mutualists in mixed‐infection nodules trades off with defense against antagonists
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Ecological forecasts for marine resource management during climate extremes
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Karuk ecological fire management practices promote elk habitat in Northern California
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Genetic structure and historic demography of endangered unarmored threespine stickleback at southern latitudes signals a need for new management directives
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A manager’s guide to using eDNA metabarcoding in marine ecosystems
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Silicon concentrations and stoichiometry in two agricultural watersheds: implications for management and downstream water quality
Agriculture alters the biogeochemical cycling of nutrients such as nitrogen (N), phosphorus (P), and silicon (Si) which contributes to the stoichiometric imbalance among these nutrients in aquatic systems. Limitation of Si relative to N and P can facilitate the growth of non-siliceous, potentially harmful, algal taxa which has severe environmental and economic impacts. Planting winter cover crops can retain N and P on the landscape, yet their effect on Si concentrations and stoichiometry is unknown. We analyzed three years of biweekly concentrations and loads of dissolved N, P, and Si from subsurface tile drains and stream water in two agricultural watersheds in northern Indiana. Intra-annual patterns in Si concentrations and stoichiometry showed that cover crop vegetation growth did not reduce in-stream Si concentrations as expected, although, compared to fallow conditions, winter cover crops increased Si:N ratios to conditions more favorable for diatom growth. To assess the risk of non-siliceous algal growth, we calculated a stoichiometric index to quantify biomass growth facilitated by excess N and P relative to Si. Index values showed a divergence between predicted algal growth and what we observed in the streams, indicating other factors influence algal community composition. The stoichiometric imbalance was more pronounced at high flows, suggesting increased risk of harmful blooms as climate change increases the frequency and intensity of precipitation in the midwestern U.S. Our data include some of the first published measurements of Si within small agricultural watersheds and provide the groundwork for understanding the role of agriculture on Si export and stoichiometry.
Data and R code for “Tree regeneration response to a shifting soil nutrient economy depends on mycorrhizal association and age”, Forest Ecology and Management, 2022
Atmospheric nitrogen (N) deposition has led to an increase in N cycling and N availability. This increase in inorganic N is likely to impact forest ecosystems, although the responses remain uncertain. Most tree species are associated with one of two mycorrhiza types – arbuscular mycorrhizae (AM) or ectomycorrhiza (ECM). Due to functional differences in their ability to access soil nutrients, we might expect that increased N cycling and availability of inorganic N would benefit AM associated species, with negative or neutral impact for ECM associated species. This study addresses how the abundance of the regeneration layer responds to those shifting soil conditions, based on their mycorrhizal association. We used a long-term experiment located in a temperate deciduous forest, where the native acidic soils are low in nutrients. Soil treatments began in 2009, by adding lime and/or phosphate to raise pH and increase the availability of N and P. All trees ≥ 6.0 cm in 2010 were tagged and have been monitored with annual censuses. To quantity the density of the regeneration layer, seedlings and saplings were recorded in the control and limed plots in 2019. Trees that had recruited into the canopy (DBH ≥ 6.0 cm) were measured in 2020 in all treatment plots. Seedlings older than one year responded to the treatments as predicted, as AM seedlings increased by 42% in the lime treatment (1.53 ± 0.38 individuals per m2 in control, to 2.17 ± 0.56 in lime) and ECM seedlings decreased by 49% in response to liming (0.61 ± 0.14 individuals per m2 in control, to 0.31 ± 0.04 in lime). AM saplings also responded positively to liming, increasing 254% from control to lime (from 0.013 ± 0.003 to 0.046 ± 0.018 individuals per m2), while ECM sapling abundance was neutral (0.063 ± 0.015 individuals per m2 in control, and 0.054 ± 0.009 in lime). The highest number of ECM recruits was found in the control plots (34.4%), followed by phosphate (25.8%), lime + phosphate (21.5%), then lime (18.3%).
Songbird yields resulting from different forest management practices in the Oregon Coast Range, 2019-2021
Data in this package was used to model the responses of forest songbirds to landscape scale forest management strategies. The majority of data was derived from emprical studies (avian point counts) conducted by the principal investigator or mined from the literature. Gaps in the data were filled in via expert opinion, considering the life history and habitat needs of the species.
Can wildland fire management alter 21st-century subalpine fire and forests in Grand Teton National Park, Wyoming, USA
In subalpine forests of the western United States that historically experienced infrequent, high-severity fire, whether fire management can shape 21st-century fire regimes and forest dynamics to meet natural resource objectives is not known. Managed wildfire use (i.e., allowing lightning-ignited fires to burn when risk is low instead of suppressing them) is one approach for maintaining natural fire regimes and fostering mosaics of forest structure, stand age, and tree-species composition, while protecting people and property. However, little guidance exists for where and when this strategy may be effective with climate change. We simulated most of the contiguous forest in Grand Teton National Park, WY to ask: (1) How would subalpine fires and forest structure be different if fires had not been suppressed during the last three decades? (2) What is the relative influence of climate change versus fire management strategy on future fire and forests? We contrasted fire and forests from 1989-2098 under two fire management scenarios (managed wildfire use and fire suppression), two general circulation models (CNRM-CM5 and GFDL-ESM2M), and two representative concentration pathways (8.5 and 4.5). We found little difference between management scenarios in the number, size, or severity of fires during the last three decades. With 21st-century warming, fire activity increased rapidly, particularly after 2050, and followed nearly identical trajectories in both management scenarios. Area burned per year between 2018-2099 was 1,700% greater than in the last three decades (1989-2017). Large areas of forest were abruptly lost; only 65% of the original 40,178 ha of forest remained by 2098. However, forests stayed connected and fuels were abundant enough to support profound increases in burning through this century. Our results indicate that strategies emphasizing managed wildfire use, rather than suppression, will not alter climate-induced changes to fire and forests in subalpine land
Can we manage a future with more fire? Effectiveness of defensible space treatment depends on housing amount and configuration
Context: Fire in forested wildland urban interface (WUI) landscapes is increasing throughout the western United States. Spatial patterns of fuels treatments affect fire behavior, but it is unclear how fire risk and fuel treatment effectiveness will change under future conditions. Objectives: (1) How do area burned, forest and fuel characteristics, and fire risk change over time under 21st-century climate? (2) When defensible space fuels treatments are applied around all houses, which scenarios of WUI housing amount and configuration minimize fire risk? Methods: In generic 10,000-ha US Northern Rocky Mountain subalpine forest landscapes, we simulated 21 scenarios differing in fuels treatment, housing amount and configuration (neutral landscape models), and projected future climate using the process-based model iLand. We compared fire risk at three scales: 1-ha home ignition zone (HIZ), 9-ha safe suppression zone (SSZ), and landscape. Results: Under warm-dry climate, annual area burned increased, but area burned at high fire intensity peaked in the 2060s and then declined sharply; fire risk followed similar trends. Defensible space treatments maintained low flame lengths in HIZs. Clustered housing was more effective at reducing SSZ risk compared to dispersed housing. At landscape scales, treating more of the landscape reduced fire risk but configuration was unimportant. Conclusions: The most effective strategy for reducing fire risk depends on the scale at which risk is assessed. Clustering WUI developments and treating between 10 to 30% of the landscape every 10 years can reduce fire risk across multiple scales.
Lichen abundance and biodiversity along a chronosequence from young managed stands to ancient forest, 1993 (Neitlich thesis)
The diversity of epiphytic lichens in old growth forests has stimulated considerable research (e.g., Howe 1978, Pike et al. 1975; Hoffman and Kazmierski 1969). We possess few data on the lichen communities of younger stands or the manner in which they develop as the forest ages. As our society grapples with the consequences of habitat loss and pressure on existing natural populations, such data are acutely needed (FEMAT 1993). This paper seeks to describe the relationship between forest age and the abundance and diversity of lichens in one region, and in doing so, to invite more rigorous assessment of the conservation needs of lichens with respect to forest management. Moveover, that documenting these patterns will facilitate research into age- related processes directly influencing lichen abundance and diversity.
Uneven Aged Management Project (UAMP), Andrews Experimental Forest
The study consists of 16 treatment units – stands ranging in size from 7 to 11 ha – within the H.J. Andrews Experimental Forest. Each unit is has assigned one of four alternative thinning regimes – unthinned (Control), light thin with patch openings (GAP), light thin (Light) or heavy thin (Heavy),. The stands are to be managed under these alternative regimes over several harvest cycles as the experiment evaluates alternative thinning regimes to convert uniform, even-aged stands, to structurally heterogeneous uneven-aged structure. Vegetation data collection occurred pretreatment (1997 or 1998) and post-treatment (2001, 2003, 2005 and 2010).
Interior Alaska managed sites: seedling data measured one time in either summer 2011, 2012, or 2013
This dataset includes counts of seedlings (presented by species) within quadrats of a specified size, measured in black spruce forest and adjacent areas that had been either thinned or shearbladed (clearcut). Basal diameter measurements for select seedlings is also included.
Interior Alaska managed sites: soil organic layer and mineral soil nutrient concentrations and additional characteristics measured one time in either summer 2012 or 2013
This dataset contains soil organic layer and mineral soil depth, C and N concentrations, and other soil characteristics collected at all managed and adjacent unmanaged study sites.
Interior Alaska managed sites: soil organic layer depth and thaw depth measured one time in either summer 2012 or 2013
This dataset contains estimates of soil organic layer depth and thaw depth along transects measured at a suite of managed and unmanaged areas in interior Alaska in summers 2012 and 2013.
Interior Alaska managed sites: tree inventory measured one time in either summer 2012 or 2013
This dataset contains the diameter of all trees (diameter at breast height) and shrubs (basal diameter) measured in managed areas and adjacent unmanaged black spruce forest, in Summers 2012 and 2013.
Interior Alaska managed sites:vegetation community composition and ground cover measured one time in either summer 2012 or 2013
This dataset contains number of hits by different vegetation types and ground cover measured using a pin flag using the point intercept method.
Interior Alaska managed sites: downed woody debris measured one time in either summer 2012 or 2013
This dataset contains counts of fine woody debris collected along transects measured at a suite of managed and unmanaged areas in interior Alaska in summers 2012 and 2013. Dataset also includes diameters of large (>=7cm diameter) downed woody debris pieces.
Demonstration of Scientific Workflow Reproducibility with Hyperflow Workflow Management System
<p>This package contains the Experiment Digital Object that allows to reproduce the workflow execution experiment.</p> <p>The content of the package:<br> - Information about the experimental workflow (below).<br> - Experiment execution traces in the form of a dataframe (csv file) with description of the format (below).<br> - Visualization of the execution (png file).<br> - Python script for analysis of the execution trace (generates the visualization). <br> - Instructions describing how to reproduce the experiment (below).</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.