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14 results for “Nutrient structure”
Networking nutrients: how nutrition determines the structure of ecological networks - Dataset
<p>Raw sequencing data and other metadata files are associated with Cuff et al. (2021a, 2022a), available at https://doi.org/10.5281/zenodo.4708418</p> <p>Data/code relating to the macronutrient contents and delineation of tropho-species clusters are associated with Cuff et al. (2021b, 2022b), available at https://doi.org/10.5281/zenodo.5738016</p> <p>Cuff, Jordan P. (2021a). A molecular analysis of the diet and biocontrol potential of spiders in cereal crops - Dataset. <em>Zenodo</em>. doi: 10.5281/zenodo.4708419</p> <p>Cuff, Jordan Patrick, Tercel, M. P., Vaughan, I. P., Drake, L. E., Wilder, S. M., Bell, J. R., … Symondson, W. O. (2021b). Evidence for nutrient-specific foraging of predators under field conditions. <em>Zenodo</em>. doi: 10.5281/zenodo.5738015</p> <p>Cuff, Jordan P., Tercel, M. P. T. G., Drake, L. E., Vaughan, I. P., Bell, J. R., Orozco-terWengel, P., … Symondson, W. O. C. (2022a). Density-independent prey choice, taxonomy, life history and web characteristics determine the diet and biocontrol potential of spiders (Linyphiidae and Lycosidae) in cereal crops. <em>Environmental DNA</em>, in press. doi: 10.1002/edn3.272</p> <p>Cuff, Jordan P., Tercel, M. P. T. G., Vaughan, I. P., Drake, L. E., Wilder, S. M., Bell, J. R., … Symondson, W. O. C. (2022b). Evidence for nutrient-specific foraging of predators under field conditions. <em>Authorea</em>. doi: 10.22541/au.164908092.21266343/v1</p>
NUT01 Nutrient Network: Investigating the roles of nutrient availability and vertebrate herbivory on grassland structure and function at Konza Prairie
The goals and focal research questions are copied below from the Nutrient Network website. More information can be found at nutnet.org. NutNet focal research questions: (1) How general is our current understanding of productivity-diversity relationships? (2) To what extent are plant production and diversity co-limited by multiple nutrients in herbacoues-dominated communities? (3) Under what conditions do grazers or fertilization control plant biomass, diversity, and composition? NutNet goals: (1) To collect data from a broad range of sites in a consistent manner to allow direct comparisons of environment-productivity-diversity relationships among systems around the world. This is currently occurring at each site in the network and, when these data are compiled, will allow us to provide new insights into several important, unanswered questions in ecology. (2) To implement a cross-site experiment requiring only nominal investment of time and resources by each investigator, but quantifying community and ecosystem responses in a wide range of herbaceous-dominated ecosystems (i.e., desert grasslands to arctic tundra).
Dataset Changes in structure and assembly of a species-rich soil natural community with contrasting nutrient availability upon establishment of a plant-beneficial Pseudomonas in the wheat rhizosphere
<p>This dataset is related to the paper "<strong>Changes in structure and assembly of a species-rich soil natural community with contrasting nutrient availability upon establishment of a plant-beneficial <em>Pseudomonas </em>in the wheat rhizosphere</strong>" (Garrido-Sanz et al., 2023, doi: 10.1186/s40168-023-01660-5) and contains the data obtained from bacterial competition asays and plant-growth measurements.</p> <p>Sequencing data used in this study has been deposited in the NCBI Sequence Read Archive (RSA) under the BioProject accession number <a href="https://www.ncbi.nlm.nih.gov/bioproject/PRJNA948847">PRJNA948847</a>.</p> <p>The R script used to analyze the data generated in the paper is available at <a href="https://github.com/dgarrs/Pprotegens_proliferation_NatComs">GitHub </a>and <a href="https://doi.org/10.5281/zenodo.8322086">Zenodo</a>.</p>
LAGOS-NE – Lake nutrient chemistry and geospatial data to measure spatial structure of ecosystem properties in a 17-state region of the U.S.
This dataset includes data for the lake water quality and geospatial variables that describe climate, hydrology, land use land cover, and lake characteristics that were used to study spatial structure in lake properties at the sub-continental scales (Lapierre et al. Quantifying spatial structure to improve understanding of the relationships between climate, landscape, and lake ecosystem properties, to be submitted to Ecology). All observations came from LAGOS-NELIMNO v. 1.054.1 and LAGOS-NEGEO v. 1.03 (LAke multi-scaled GeOSpatial and temporal database), an integrated database of lake ecosystems (Soranno et al. 2015). LAGOS-NE contains a complete census of lakes great than or equal to 4 ha with corresponding geospatial information for a 17-state region of the U.S., and a subset of the lakes has observational data on morphometry and chemistry. Approximately 54 different sources of data were compiled for the LAGOS-NELIMNO v. 1.054.1 dataset and were mostly generated by government agencies (state, federal, tribal) and universities. In this analysis, we compiled lake water quality data from the summer stratified season (June 15-September 15) in the most recent 10 years of data included in LAGOS-NELIMNO v. 1.054.1 (2002-2011). We report the median total nitrogen, total phosphorus, secchi depth, and chlorophyll values for each lake, which was calculated as the grand median of each yearly median value. We also include data for lake and landscape characteristics including variables related to lake morphometry, climate, hydrology, atmospheric deposition, land use and land cover.
The structural and nutrient chemistry of decomposing cacti in the Sonoran Desert
Cacti are an abundant taxa in the Sonoran Desert, but most research focuses on their population dynamics and physiology and relatively little is currently known regarding their role in desert biogeochemical cycles, particularly regarding their decomposition dynamics. A better understanding of cactus decomposition and their role in ecosystem processes is important, considering there are many threatened and endangered species within this group. In this study, we decomposed two common species of cacti, Opuntia chlorotica (pancake prickly pear) and Cylindropuntia acanthocarpa (buckhorn cholla), in the Sonoran Desert of Arizona, U.S.A. Mass loss, water loss, nutrient content, and structural and metabolic chemistry were measured at regular intervals over the course of one year of decomposition. Our results demonstrate the contribution of cactus decomposition to carbon and nutrient recycling, with dynamics that are overall comparable to those of woody and herbaceous leaf litter for most elements. We enumerate, however, a particularly important role in calcium dynamics in comparison to woody and herbaceous leaf litter. Despite different structural characteristics, both cactus species released nutrients at a statistically equivalent rate, though with altered timing of net immobilization and mineralization due to temporary mass gain and associated nutrient immobilization in cholla. The release of nutrients and water from decaying cacti have a modest influence on underlying soil CO2 flux, secondary to a more dominant influence of overall soil temperature and moisture. Thus, our data provide a baseline for understanding the decay dynamics of two common cactus species and suggest that, while there is still a lack of information pertaining to cactus decomposition, the similarities between leaf litter and cacti will aid our predictions of the consequences of future changes in cactus populations.
The interaction of physical structure and nutrient loading drives ecosystem change in a large tropical lake over 40 years (DATA)
<p><strong><span>Datasets for manuscript entitled "The interaction of physical structure and nutrient loading drives ecosystem change in a large tropical lake over 40 years"</span></strong></p> <p><em><span>Includes data collected by Fadum and Hall as well as unplublished data from Vaux and Goldman 1984.</span></em></p> <p><span><strong>Abstract: </strong>Many lakes across the world are entering novel states and experiencing altered biogeochemical cycling due to local anthropogenic stressors. In the tropics, understanding the drivers of these changes can be difficult due to a lack of documented historic conditions or an absence of continuous monitoring that can distinguish between intra- and inter-annual variation. Over the last forty years (1980–2020), Lake Yojoa (Honduras) has experienced increased watershed development as well as the introduction of a large net-pen Tilapia farm, resulting in a dramatic reduction in seasonal water clarity, increased trophic state and altered nutrient dynamics, shifting Lake Yojoa from an oligotrophic (low productivity) to mesotrophic (moderate productivity) ecosystem. To assess the changes that have occurred in Lake Yojoa as well as putative drivers for those changes, we compared Secchi depth (water clarity), dissolved inorganic nitrogen (DIN), and total phosphorus (TP) concentrations at continuous semi-monthly intervals for the three years between 1979 and 1983 and again at continuous 16-day intervals for 2018–2020. Between those two periods we observed the loss of a clear water phase that previously occurred in the months when the water column was fully mixed. Seasonal peaks in DIN coincident with mixing suggest that an enhanced accumulation of ammonium in the hypolimnion (the bottom layer of a stratified lake) during stratification, and release to the epilimnion (the top layer of a stratified lake) with mixing maintains high algal abundance and subsequently low Secchi depth during what was previously the clear water phase. This interaction of nutrient loading and Lake Yojoa's monomictic stratification regime illustrates a key phenomenon in how physical water column structure and nutrients interact in tropical monomictic lakes. This work highlights the need to consider nutrient dynamics of warm anoxic hypolimnions, not just surface water nutrient concentrations, to understand environmental change in these societally important but understudied ecosystems.</span></p> <p> </p> <p><em><strong><span>(for more recent years of data collection see additional zenodo repositories by Fadum and/or Hall) </span></strong></em></p>
Data for "Symbiotic nutrient exchange enhances the long-term survival of cassiosomes, the autonomous stinging-cell structures of Cassiopea"
<p>Raw data linked to the publication "Symbiotic nutrient exchange enhances the long-term survival of cassiosomes, the autonomous stinging-cell structures of <em>Cassiopea".</em> NanoSIMS data and data from the survival experiments are available as individual tabs in the excel file.</p>
Community assembly amplicon sequences, with pipeline to get asv table for "Spatial structure drives compositional convergence between nutrient environments in experimental microbial communities"
<p>Community assembly amplicon sequences, with pipeline to get asv table for "Spatial structure drives compositional convergence between nutrient environments in experimental microbial communities"</p> <p> </p> <p>compressed FASTA files for 16s amplicon sequences relating to two separate projects, "Spatial structure drives compositional convergence between nutrient environments in experimental microbial communities" and "Habitat filtering leads to phylogenetic clustering in synthetic microbial communities". DADA22 pipeline is included, which pools all samples for better accuracy. A Julia script bioinfo.jl is then used to select only the samples relevant to spatial structure project.</p> <p> </p> <p>All csv filenames are appended with "_q" indicating an increase in the stringency of quality filtering parameters (also increasing minimum hamming distance used in DADA2 algorithm to 5) to produce a taxa table with a sensible number of ASVs (given a known number of input strains) with each ASV uniquely aligning to an individual sequence from colony PCR of said input strains.</p> <p> </p>
Complementary water and nutrient utilization of perianth structural units help maintain long floral lifespan in Dendrobium
<p><span>Most orchids have high ornamental value with long-lived flower. However, the mechanisms by which orchids maintain floral longevity are poorly understood. Here, we hypothesized that long floral longevity in Dendrobium is maintained by high resource investment and complementary water and nutrient utilization in different structural units of the perianth. To test this hypothesis, we determined which water- and nutrient-related traits are correlated with flower longevity in twenty-three Dendrobium species or cultivars and examined the variations of the related traits during flower development of one long-lived cultivar. We found that floral longevity was correlated with dry mas per unit area of perianths and total flower biomass, which indicates that maintaining long floral longevity requires increased resource investment. During development of long-lived flowers, labella showed high capacity for water storage and nutrient reutilization, which can partly remedy high water demand and biomass investment. Sepals and petals, in contrast, had stronger desiccation avoidance and higher metabolic activity with lower biomass investment. These findings indicate that Dendrobium flowers maintain longevity by complementary water and utilization strategies in the sepals, petals and labella, with labella consuming more water and nutrients to extend flower display, while sepals and petals use a more conservative strategy.</span></p>
Data from: Nutrient availability and atmospheric CO2 partial pressure modulate the effects of nutrient heterogeneity on the size structure of populations in grassland species
Open the record for dataset details and reuse information.
Data from: The effects of insects, nutrients, and plant invasion on community structure and function above- and belowground
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Complementary water and nutrient utilization of perianth structural units help maintain long floral lifespan in Dendrobium
Open the record for dataset details and reuse information.
Innovative Food Structures to Enhance Nutrient Bioavailability
ClinicalTrials.gov study NCT04156074. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Multiscale regulation of nutrient stress responses in Escherichia coli from chromatin structure to small regulatory RNAs
GEO Series GSE271069. Escherichia coli str. K-12 substr. MG1655. 64 samples. Type: Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Other.
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