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13 results for “water presence”
Winter cumulated water presence of "Marais Breton nord" calculated with the WIW
<p><span>The WIW was calculated for all SENTINEL 2 cloudless images available within the period from January to April from 2017 to 2024. All WIW rasters were then added to provide the cumulated water presence ranging from 1 to 40 corresponding to the number of dates related to available cloudless images at that period. </span>The table provides the dates of the images used. EPSG 3857</p>
Increased water use by sugar maple trees in the presence of a dense beech understory layer
<p>The formation of a recalcitrant understory vegetation layer is a phenomenon observed in various forests around the world, which can limit tree regeneration and in the long term, modify the composition, succession process and water balance of forests. In temperate forests of southern Quebec (Canada), the proliferation of American beech (<em>Fagus grandifolia</em>) in stands dominated by sugar maple (<em>Acer saccharum</em>) can be related to the recalcitrant vegetation phenomenon. With a projected increase in the severity and duration of droughts, a better understanding of its effect on water fluxes is crucial to understand the trajectory of impacted forests. The objective of this study was to understand how recalcitrant-type vegetation, in this case beech proliferation in sugar maple stands, influence tree water use. We compared transpiration i) by overstory trees (i.e. sugar maples) and ii) by understory saplings (i.e. American beech) in sites with and without beech understory dominance. At each of the six sites, we measured sap flux density (F<sub>d</sub>) of two sugar maple trees (diameter at breast height > 9 cm) and one beech sapling (1 cm < diameter at breat height ≤ 9 cm) with thermal dissipation sensors during the growing season. At tree level, F<sub>d</sub> of sugar maple trees was significantly larger in beech-dominated sites compared to control ones, indicating greater water consumption by sugar maple when understory is dominated by beech. At stand scale, total transpiration varied between 140 and 296 mm for the study period, with no significant difference between beech-dominated and control sites. We provide two hypotheses to explain our results at tree scale: i) reduced cover by forest floor vegetation would limit transpiration through this layer, thus allowing increased availability of water resources to supply tree transpiration or ii) increased tree transpiration rate would be a mechanism to satisfy nutrient requirements in beech-dominated stands often associated with lower soil fertility. Further research is needed to better understand the mechanisms explaining tree water use given beech proliferation.</p>
Spring-Summer cumulated water presence of "Marais Breton nord" calculated with the WIW
<p>The WIW was calculated for all SENTINEL 2 cloudless images available within the period from May to September from 2017 to 2022. All WIW rasters were then added to provide the cumulated water presence ranging from 1 to 39 corresponding to the number of dates related to available cloudless images at that period in the Marais Breton Nord. The table provides the dates of the images used. EPSG 3857</p>
Winter cumulated water presence of "Loire-Atlantique et abord" calculated with the WIW
<p>4 rasters cover the "Loire-Atlantique et abord" study area. The WIW was calculated for all SENTINEL 2 cloudless images available within the period from January to April from 2017 to 2023. All WIW rasters were then added to provide the cumulated water presence ranging from 1 to 15 corresponding to the number of dates related to available cloudless images at that period. The table provides the dates of the images used. EPSG 3857.</p>
Spring-Summer cumulated water presence of "Loire-Atlantique et abord" calculated with the WIW
<p>4 rasters cover the "Loire-Atlantique et abord" study area. The WIW was calculated for all SENTINEL 2 cloudless images available within the period from May to September from 2017 to 2023. All WIW rasters were then added to provide the cumulated water presence ranging from 1 to 24 corresponding to the number of dates related to available cloudless images at that period. The table provides the dates of the images used. EPSG 3857.</p>
Text-fig. 4. Electrophoresis after amplification: Electrophoretical analysis of mitochondrial DNA. mtDNA sequences were amplified by primers F15.412 and R16.169 (450 bp), R16.269 (550 bp), R16.519 (800 bp). Lane 1 are primers F15.412 + R16.169, lane 2 primers F15.412 + R16.269, lane 3 primers F15.412 + R16.519, NC – negative control – water, L – 100 bp DNA ladder (band size from 100 bp to 1500 bp). in Genetic Analysis Of Possibly The Oldest Greyhound Remains Within The Territory Of The Czech Republic As Proof Of A Local Elite Presence At Chotěbuz-Podobora Hillfort In The 8 -9 Century Ad
Text-fig. 4. Electrophoresis after amplification: Electrophoretical analysis of mitochondrial DNA. mtDNA sequences were amplified by primers F15.412 and R16.169 (450 bp), R16.269 (550 bp), R16.519 (800 bp). Lane 1 are primers F15.412 + R16.169, lane 2 primers F15.412 + R16.269, lane 3 primers F15.412 + R16.519, NC – negative control – water, L – 100 bp DNA ladder (band size from 100 bp to 1500 bp).
Simulations of the air-water interface at the presence of salt, Dang ions + SPCE water model
<p>Simulations of a water–air interface. There are ~20000 water molecules with various concentrations of NaCl or CaCl_2 in a simulation box of 12*12*22 nm^3. The SPCE water and the ions by Dang et al. are used. The numbering in file names corresponds to the different concentrations, and data for a pure water–air interface "NOION" is also provided. GROMACS-compatible inputs are provided: simulation parameters (md.mdp), topologies (top), and index (ndx) files. Initial structure can be extracted from the tpr file using gmx editconf. The run input (tpr) is provided, as are the outputs: energy file (edr), trajectory (xtc), and final structure (gro). Surface tensions can be extracted by gmx energy.</p> <p>These values are reported in DOI: [ADD].</p> <p>Data for scaled ions based on the electronic continuum correction (ECC) with two different water models are provided in DOI: 10.5281/zenodo.3888383 (SPCE) and DOI: 10.5281/zenodo.3888369 (OPC).</p> <p> </p>
Simulations of the air-water interface at the presence of salt, ECC ions + SPCE water model
<p>Simulations of a water–air interface. There are ~20000 water molecules with various concentrations of NaCl or CaCl_2 in a simulation box of 12*12*22 nm^3. The SPCE water and the ions with scaled charges based on the electronic continuum correction (ECC) are used. The numbering in file names corresponds to the different concentrations, and data for a pure water–air interface "NOION" is also provided. GROMACS-compatible inputs are provided: simulation parameters (md.mdp), topologies (top), and index (ndx) files. Initial structure can be extracted from the tpr file using gmx editconf. The run input (tpr) is provided, as are the outputs: energy file (edr), trajectory (xtc), and final structure (gro). Surface tensions can be extracted by gmx energy.</p> <p>These values are reported in DOI: [ADD].</p> <p>Data for these ECC ions with OPC water is provided at DOI: 10.5281/zenodo.3888369 and for the full charge ions by Dang et al. in SPCE water at DOI: 10.5281/zenodo.3888436.</p>
FIGURE 2. a and b in Presence of Foraminifera of Superfamily Komokioidea (Order Astrorhizida) in Colombian deep Caribbean waters
FIGURE 2. a and b. Specimens belonging to Lana neglecta (Family Komokiidae); c. Amplification of tubules from Lana neglecta.
FIGURE 1 in Presence of Foraminifera of Superfamily Komokioidea (Order Astrorhizida) in Colombian deep Caribbean waters
FIGURE 1. Location of COL 4 and COL 5 blocks and differentiation of geoforms on the sea bed (Extracted and modified from Garrido-Linares et al. 2014).
Impact of atmospheric water-soluble iron on α-pinene-derived SOA formation and transformation in the presence of aqueous droplets
<p>The following data sets belong to the article "Impact of atmospheric water-soluble iron on α-pinene-derived SOA formation and transformation in the presence of aqueous droplets" The impact of water-soluble atmospheric iron on formation, growth and aging of secondary organic aerosol (SOA) is a controversial subject in the literature. Iron chemistry drives Fenton-like reactions in the aqueous phase which is dependent on pH. Flow reactor experiments in the dark and under humid conditions were conducted to investigate systematically the influence of ferrous iron in the aqueous phase on α-pinene SOA by online physical analysis and offline high-resolution mass spectrometry. In total 31 flow reactor experiments were conducted in four sets of experiments. All SMPS data and mass spectra in negative mode are uploaded sorted by set of experiments and figures in the paper. You can find the workflow of SMPS data analysis as well as the retention times of the target analysis in the paper and SI.</p>
Simulations of the air-water interface at the presence of salt, ECC ions + OPC water model
<p>Simulations of a water–air interface. There are ~20000 water molecules with various concentrations of NaCl or CaCl_2 in a simulation box of 12*12*22 nm^3. The 4-point OPC water and the ions with scaled charges based on the electronic continuum correction (ECC) are used. The numbering in file names corresponds to the different concentrations. GROMACS-compatible inputs are provided: simulation parameters (md.mdp), topologies (top), and index (ndx) files. Initial structure can be extracted from the tpr file using gmx editconf. The run input (tpr) is provided, as are the outputs: energy file (edr), trajectory (xtc), and final structure (gro). Surface tensions can be extracted by gmx energy.</p> <p>These values are reported in DOI: [ADD].</p> <p>Data for these ECC ions with SPCE water is provided at DOI: 10.5281/zenodo.3888383 and for the full charge ions by Dang et al. in SPCE water at DOI: 10.5281/zenodo.3888436 .</p>
Subspecies and Distribution. H.a.aquaticusOgilby,1841—WAfricafromGuineaandSierraLeonetoGhana. H.a.bates:Lydekker,1906—Nigeria,Cameroon,andpresumablyneighboringcountries. H. a. cottoni Lydekker, 1906 — Republic of the Congo, DR Congo, and presumably Uganda. The Water Chevrotain reportedly has a disjunct distribution, occurring in coastal forests from West Africa and in the rainforests of Central Africa from Nigeria to DR Congo, marginally entering Uganda. It has been listed for the following countries in Central Africa: Angola (Cabinda), Cameroon, Central African Republic, DR Congo, Equatorial Guinea, Gabon, Nigeria, Republic of the Congo, and Uganda (Semliki Valley). A record from Angola's Lunda Norte Province, near the Cassai River,is the southernmost record of the species. The species' status in some countries remains unclear. It is apparently absent from the Republic of Benin and Togo (but the speciesis listed as probable in the Ot Basin in Togo); its supposed occurrence in Guinea Bissau and Senegal remains unsupported by evidence. The species was listed for Sierra Leone, although its presence had been called into question. Photographic evidence seems to clarify that the species occurs in Sierra Leone. In 1850, a specimen was recorded from Gambia, but the present status of the species is unclear. Local people report the species from the Boké Préfecture in NW Guinea, which might be the northernmost area from which the species has been recently reported. Extensive field and market surveys there and in the southern Guinea savanna belt did notfind evidence for the species' presence. in Tragulidae
Subspecies and Distribution. H.a.aquaticusOgilby,1841—WAfricafromGuineaandSierraLeonetoGhana. H.a.bates:Lydekker,1906—Nigeria,Cameroon,andpresumablyneighboringcountries. H. a. cottoni Lydekker, 1906 — Republic of the Congo, DR Congo, and presumably Uganda. The Water Chevrotain reportedly has a disjunct distribution, occurring in coastal forests from West Africa and in the rainforests of Central Africa from Nigeria to DR Congo, marginally entering Uganda. It has been listed for the following countries in Central Africa: Angola (Cabinda), Cameroon, Central African Republic, DR Congo, Equatorial Guinea, Gabon, Nigeria, Republic of the Congo, and Uganda (Semliki Valley). A record from Angola's Lunda Norte Province, near the Cassai River,is the southernmost record of the species. The species' status in some countries remains unclear. It is apparently absent from the Republic of Benin and Togo (but the speciesis listed as probable in the Ot Basin in Togo); its supposed occurrence in Guinea Bissau and Senegal remains unsupported by evidence. The species was listed for Sierra Leone, although its presence had been called into question. Photographic evidence seems to clarify that the species occurs in Sierra Leone. In 1850, a specimen was recorded from Gambia, but the present status of the species is unclear. Local people report the species from the Boké Préfecture in NW Guinea, which might be the northernmost area from which the species has been recently reported. Extensive field and market surveys there and in the southern Guinea savanna belt did notfind evidence for the species' presence.
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