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39 results for “carbon balance”
Data from: Metals and other ligands balance carbon fixation and photorespiration in chloroplasts
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Impacts of anthropogenic emission change scenarios on U.S. water and carbon balances at national and state scales in a changing climate
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Data from: The role of nutritional impairment in carbon-water balance of silver fir drought-induced dieback
<p><span>Rear-edge populations at the xeric distribution limit of tree species are particularly vulnerable to forest dieback triggered by drought. This is the case of silver fir (Abies alba) forests located in the southwestern of Europe. While silver fir drought-induced dieback patterns have been previously explored, information on the role played by nutritional impairment is lacking despite its potential interactions with tree carbon-water balances. We performed a comparative analysis of radial growth, intrinsic water-use efficiency (iWUE), oxygen isotopes (δ<sup>18</sup>O) and nutrient concentrations in leaves of declining (DD) and non-declining (ND) trees in silver fir in four forests in the Spanish Pyrenees. We also evaluated the relationships among dieback predisposition, intraspecific trait variation (wood density and leaf traits) and rhizosphere soil physical – chemical properties. The onset of growth decline in DD trees occurred more than two decades ago, and they subsequently showed low growth resilience against droughts. The DD trees presented consistently lower foliar concentrations of nutrients such as P, K, Cu and Ni than ND trees. The strong effects of foliar nutrient status on growth resilience indices support the key role played by mineral nutrition in tree functioning and growth before, during and after drought. In contrast, variability in wood density and leaf morphological traits, as well as soil properties, showed weak relationships with tree nutritional status and drought performance. At the low elevation, warmer sites, DD trees showed stronger climate – growth relationships and lower δ<sup>18</sup>O than ND trees. The uncoupling between iWUE and δ<sup>18</sup>O, together with the positive correlations between P and K leaf concentrations and δ<sup>18</sup>O, point to deeper soil/bedrock water sources and vertical decoupling between nutrient and water uptake in DD trees. This study provides novel insights into the mechanisms driving silver fir dieback and highlights the need to incorporate tree nutrition into forest dieback studies.</span></p>
Supplementary materials for the article: "Where and when the mesopelagic carbon budget balances, if at all", Oliver et al., 2023
<p>This is the supplementary materials for the article: "Where and when the mesopelagic carbon budget balances, if at all", Oliver et al., 2023</p> <p>This folder contains:</p> <p>MLD.mat<br> - The annual maximum of monthly-averaged mixed layer depth (m) in ECCO:<br> 1992-2001 mean (data retrieved from ECCO Consortium et al., 2023). The mixed layer<br> depth is determined by the depth where waters are first 0.8◦ C colder than the surface, as<br> per the Kara Formula (Kara et al., 2000)</p> <p>FBGC3mm.mat<br> - Sinking detrital flux [mmol P/m3/d], produced by MOPS (Kriest et al., 2015), monthly average</p> <p>FBGC4mm.mat<br> - Detritus removal via remineralisation and denitrification [mmol P/m3/d], produced by MOPS (Kriest et al., 2015), monthly average</p> <p>FBGC7mm.mat<br> - Detritus creation [mmol P/m3/d], produced by MOPS (Kriest et al., 2015), monthly average</p> <p>DETmm.mat<br> - Sinking Detritus [mmol P/m3/d], produced by MOPS (Kriest et al., 2015), monthly average</p> <p>NPP.mat<br> - Primary production [mmol P/m3/d], produced by MOPS (Kriest et al., 2015), annual average</p> <p>export.mat <br> - Export production [mmol P/m3/d], produced by MOPS (Kriest et al., 2015), annual average</p> <p>grid.mat<br> - model grid information for ECCO transport matrix (see Khatiwala, S. (2018): https://zenodo.org/record/1246300<br> 463doi: 10.5281/ZENODO.1246300)</p> <p>cmap5.mat<br> - matlab colormap </p> <p>bluewhitered.mat <br> - matlab colormap </p> <p>cmap12.mat<br> - matlab colormap</p> <p>PlotPaperFigures.m<br> - matlab script for plotting journal paper figures for "Where and when the mesopelagic carbon budget balances, if at all", Oliver et al., 2023</p> <p>findClosest.m<br> - matlab script to find the closest value in a list of values to a specified value</p>
Fosrenol and Phosphorus Balance - Lanthanum Carbonate
ClinicalTrials.gov study NCT01581996. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Data from: The role of nutritional impairment in carbon-water balance of silver fir drought-induced dieback
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Soil Organic Carbon balance
<p>Provisional demonstration of SOC balance in eucalyptus and sugarcane systems in Brazil</p>
Data from: Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
Tropical lianas deploy most of their leaves towards the top of the forest canopy, whereas trees exhibit a more stratified crown. Forest canopies are often exposed to hot and windy conditions, and how lianas cope with the extremely high transpirational demands under these environments remains unknown. We investigated stem hydraulic properties, leaf drought tolerance, diurnal changes in leaf and stem water potentials (Ψleaf and Ψstem), stomatal conductance (gs), photosynthetic rate, sap flow and stem native percentage loss of conductivity (PLC) for four liana species in a tropical forest in southwest China. Five co-occurring tree species were also selected for comparison. Lianas reached maximal transpiration at a relatively lower vapour pressure deficit (<1 kPa) than did co-occurring trees, suggesting vigorous photosynthesis during the morning. However, liana gs declined markedly over the day, with low gs at midday and afternoon. Lianas generally had higher stem sapwood-specific conductivity and maximum sap flux density but were less tolerant to drought-induced cavitation than were evergreen trees. Both lianas and trees lost leaf turgor in the top canopy at midday, but lianas lost leaf turgor earlier (∼2 h) than trees. Seven of eight species exhibited midday increases in PLC when xylem tensions were released to −0·3 to −0·5 MPa for PLC measurements. On average, lianas experienced high PLC (35·9%), along with a greater degree of disequilibrium between leaf and stem water potentials than trees (ΔΨstem–leaf: 1·37 MPa vs. 0·75 MPa) during the day. Earlier stomatal closure and efficient water transport may help lianas maintain higher Ψstem than trees despite having similar Ψleaf. Our results provide evidence that physiological regulation and efficient water transport mediate daily water relations in tropical lianas and may explain how lianas operate efficiently in tropical seasonal forests. Further studies involving a broader range of species are needed to confirm our findings.
Supplementary materials: "Where and when the mesopelagic carbon budget balances, if at all", Oliver et al.
<div>Data Supplement to "Where and when the mesopelagic carbon budget balances, if at all"</div> <div>Sophy Oliver(1), Andrew Yool(1), Stephanie A. Henson(1), Adrian P. Martin(1)</div> <div>1 National Oceanography Centre, Southampton SO14 3ZH, UK</div> <div>Corresponding author: Sophy Oliver, sophy.oliver@noc.ac.uk</div> <div> </div> <div>This data supplement contains results using the MOPS biogeochemical model (Kriest et al. 2015).</div> <div> </div> <div>-> Model_ep_npp_MLD (MATLAB files required to create Figure S1 and S10)</div> <div>-> NPP.mat: MOPS annually-averaged net primary production [mmol P / m3 / d]</div> <div>-> EP.mat: MOPS annually-averaged export production [mmol P / m3 / d]</div> <div>-> MLDinterp.mat: annual maximum of monthly-averaged mixed layer depth [m] in ECCO: 1992-2001 mean (Fukumori et al. 2023). The mixed layer depth is determined by the depth where waters are first 0.8°C colder than the near-surface, as per the Kara Formula (Kara, Rochford, and Hurlburt 2000).</div> <div>-> DOPAVG.mat: MOPS monthly-averaged dissolved organic phosphate (DOP) [mmol P / m3]</div> <div> </div> <div>-> Model_Budget_Components (MATLAB files required to create Figures 1 and S2-9)</div> <div>-> Flux.mat: Monthly-averaged particulate flux sinking into the top of each depth level [mmol P / m2 / d]. Note that depth level 1 corresponds to flux to the sea floor (burial).</div> <div>-> Drem.mat: Monthly-averaged remineralisation and denitrification of particulate matter [mmol P / m3 / d]</div> <div>-> DOPnew.mat: Monthly-averaged creation of dissolved organic phosphate by dying plankton [mmol P / m3 / d] </div> <div>-> DOPrem.mat: Monthly-averaged remineralisation and denitrification of dissolved organic phosphate [mmol P / m3 / d]</div> <div>-> det_vt.mat: Monthly-averaged change in particulate organic phosphate after vertical transport is applied [mmol P / m3 / d]</div> <div>-> det_ht.mat: Monthly-averaged change in particulate organic phosphate after horizontal transport is applied [mmol P / m3 / d]</div> <div>-> dop_vt.mat: Monthly-averaged change in dissolved organic phosphate after vertical transport is applied [mmol P / m3 / d]</div> <div>-> dop_ht.mat: Monthly-averaged change in dissolved organic phosphate after vertical transport is applied [mmol P / m3 / d]</div> <div> </div> <div>-> Code_Analysis_Plotting</div> <div>-> plot_npp.m: MATLAB script to plot Figure S1 of the supplementary figures of MOPS net primary and export production, and ECCO mixed layer depth.</div> <div>-> meso_monthly_budget.m: MATLAB script to calculate and plot the global seasonal mesopelagic organic carbon budget and its components (Figures 1 and S2-9 and S11).</div> <div>-> plot_doc.m: MATLAB script to plot Figure S10 of the supplementary figures of MOPS annually averaged DOC [µmol C kg-1] at 15m, 310m, and 610m depth.</div> <div>-> bluewhitered.mat: MATLAB colorscale.</div> <div> </div> <div>Model grid information for MITgcm_ECCO can be found here: http://kelvin.earth.ox.ac.uk/spk/Research/TMM/TransportMatrixConfigs/ (Samar Khatiwala, University of Oxford).</div> <div> </div>
Data from: Physiological regulation and efficient xylem water transport regulate diurnal water and carbon balances of tropical lianas
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Global Forest Ecosystem Structure and Function Data For Carbon Balance Research
A comprehensive global database has been assembled to quantify CO2 fluxes and pathways across different levels of integration (from photosynthesis up to net ecosystem production) in forest ecosystems. The database fills an important gap for model calibration, model validation, and hypothesis testing at global and regional scales. The database archive includes: a Microsoft Office Access Database; data files for all tables in the database; query outputs from the database; and SQL script file for re-creating the database from the tables. The database is structured by site (i.e., a forest or stand of known geographical location, biome, species composition, and management regime). It contains carbon budget variables (fluxes and stocks), ecosystem traits (standing biomass, leaf area index, age), and ancillary information (management regime, climate, soil characteristics) for 529 sites from eight forest biomes. Data entries originated from peer-reviewed literature and personal communications with researchers involved in Fluxnet. Flux estimates were included in the database when they were based on direct measurements (e.g., tower-based eddy covariance system measurements), derived from single or multiple direct measurements, or modeled. Stand description was based on observed values, and climatic description was based on the CRU data set and ORCHIDEE model output. Uncertainty for each carbon balance component in the database was estimated in a uniformed way by expert judgment. Robustness of CO2 balances was tested, and closure terms were introduced as a numerical way to approach data quality and flux uncertainty at the biome level.
NACP Biome-BGC Modeled Ecosystem Carbon Balance, Pacific Northwest, USA, 1986-2010
This data set provides Biome-BGC modeled estimates of carbon stocks and fluxes in the U.S. Pacific Northwest for the years 1986-2010. Fluxes include net ecosystem production (NEP), and net aboveground wood growth. Stocks include aboveground wood mass. Also present are mapped distributions of associated forest disturbances, distinguished by disturbance type (harvest, fire, pest/pathogen). The data are presented in a mapped form as well as in tabular summaries broken out by ownership and ecoregion. Maps of annual precipitation and temperature data are included for the years 1980-2010.
BOREAS TE-19 Ecosystem Carbon Balance Model
The BOREAS TE-19 team developed a model called the Spruce and Moss Model (SPAM) designed to simulate the daily carbon balance of a black spruce/moss boreal forest ecosystem. It is driven by daily weather conditions, and consists of four components: (1) soil climate; (2) tree photosynthesis and respiration; (3) moss photosynthesis and respiration; and (4) litter decomposition and associated heterotrophic respiration. The model simulates tree gross and net photosynthesis, wood respiration, live root respiration, moss gross and net photosynthesis, and heterotrophic respiration (decomposition of root litter, young needle and moss litter, and humus). These values can be combined to generate predictions of total site net ecosystem exchange of carbon (NEE), total soil dark respiration (live roots + heterotrophs + live moss), spruce and moss net productivity, and net carbon accumulation in the soil. The files include source code and sample input and output files in ASCII format.
Global Peatland Carbon Balance and Land Use Change CO2 Emissions Through the Holocene
This data set provides a time series of global peatland carbon balance and carbon dioxide emissions from land use change throughout the Holocene (the past 11,000 yrs). Global peatland carbon balance was quantified using a) a continuous net carbon balance history throughout the Holocene derived from a data set of 64 dated peat cores, and b) global model simulations with the LPX-Bern model hindcasting the dynamics of past peatland distribution and carbon balance. CO2 emissions from land-use change are based on published scenarios for anthropogenic land use change (HYDE 3.1, HYDE 3.2, KK10) covering the last 10,000 years. This combination of model estimates with CO2 budget constraints narrows the range of past anthropogenic land use change emissions and their contribution to past carbon cycle changes.
TrxA-mediated regulation of protein synthesis contributes to the maintenance of carbon and nitrogen balance in cyanobacteria.
GEO Series GSE243518. Synechocystis sp. PCC 6803. 17 samples. Type: Expression profiling by high throughput sequencing.
Supplementary data and Matlab code for China's HWP carbon balance assessment using Trade-Linked Approach
<p>The supplemtary data describe the fractions of the HWPs disposed of by each option in major countries/regions worldwide.</p> <p>The Matlab code is developed to produce the results of China's HWP carbon balance assessment using Trade-Linked Approach, an innovative generalizable approach for HWP carbon assessment.</p> <p>The data and code are free for academic use only.</p>
Mass Balance Recovery and Metabolite Identification of Carbon-14 BIA 28-6156
ClinicalTrials.gov study NCT05220072. IPD Sharing: NO. Countries: 1. Publications: 0.
A tRNA modification balances carbon and nitrogen metabolism by regulating phosphate homeostasis, to couple metabolism to cell cycle progression.
GEO Series GSE124428. Saccharomyces cerevisiae. 2 samples. Type: Expression profiling by high throughput sequencing.
NSF Collaborative Research: A RAPID response to Hurricane Harvey impacts on coastal carbon cycle, metabolic balance and ocean acidification
Collaborative Research: A RAPID response to Hurricane Harvey's impacts on coastal carbon cycle, metabolic balance and ocean acidification.
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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.