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30 results for “coastal environments”
Examination of protein-like fluorophores in chromophoric dissolved organic matter (CDOM) in a wetland and coastal environment for the wet and dry seasons of the years 2002 and 2003 (FCE)
Water samples are collected at the end of the dry and the wet season from all LTER sites and stored on ice until return to the lab. They are pre-filtered through pre-combusted GF/F filters and ultrafiltered and concentrated with a Pellicon 2 Mini tangential flow ultrafiltration system.Concentrated samples were then analyzed using fluorescence and SEC-HPLC. This CDOM optical study revealed the presence of two classes of compounds associated with the protein-like peak (peak T; excitation/emission (Ex/Em) maxima at around 280 nm/325 nm), which have very different chemical structures and ecological roles. In addition to proteins, we propose phenolic compounds as possible origins of peak T in coastal and wetland environments. In this study, natural water samples were obtained from subtropical rivers and estuarine environments within the Florida Coastal Everglades (FCE) ecosystem. The samples were ultra-filtered and excitation-emission fluorescence matrices (EEMs) were obtained. The EEMs showed the presence of four peaks with Ex/Em maxima at around 280 nm/325 nm (T), less than 260 nm/460 nm (A), 300 nm/412nm (M), and 350 nm/470 nm (C). To better understand the nature of peak T, the components originating this peak were separated using size exclusion chromatography (SEC) and detected by fluorescence emission at Ex/Em = 280 nm/325 nm. The elution curves revealed the presence of two elution peaks at a molecular weight of greater than 50K (void volume; T1) and around 7.6K (T2). This result suggested the need of cautious interpretation in the use of peak T as a proxy for the detection of proteinaceous materials in wetland and estuarine environments, since significant amounts of potentially interfering phenolic compounds are leached from senescent biomass in wetland and coastal ecosystems. As such EEM spectra of gallic acid an important component of hydrolysable tannins, and condensed tannins extracted from red mangroves (Rhizophora mangle) showed the presence of a peak maxima
Resources for "BMF CP 90: The duration of daily and stay visits as moderators between coastal environment enjoyment and connection and health outcomes"
<p><span>The current study is conducted to examine the following research questions:</span></p> <ul> <li><span>Is the relationship between the enjoyment of and connection to the coastal environment and the visitors’ mental health and perceived general health conditional on the duration of daily visits to the coast in the previous year?</span></li> <li><span>Is the relationship between the enjoyment of and connection to the coastal environment and the visitors’ mental health and perceived general health conditional on the duration of stay visits to the coast in the previous year?</span></li> </ul>
Resources for "BMF CP 89: The relationships between coastal environment enjoyment and connection and health outcomes"
<p><span>The current study is conducted to examine the following research questions:</span></p> <ul> <li><span>How are the enjoyment of and connection to the coastal environment associated with the perceived health outcomes during the previous year’s coastal visits?</span></li> <li><span>How are the perceived health outcomes during the previous year’s coastal visits associated with visitors’ mental health and perceived general health?</span></li> <li><span>Do the perceived health outcomes during the previous year’s coastal visits mediate the relationships between the enjoyment of and connection to the coastal environment and the visitors’ mental health and perceived general health?</span></li> </ul>
FIG. 3 in Trebouxia maresiae sp. nov. (Trebouxiophyceae, Chlorophyta), a new lichenized species of microalga found in coastal environments
FIG. 3. — Ultrastructure of Trebouxia maresiae Garrido-Benavent, Chiva & Barreno, sp. nov. by TEM: A, B, cultured cells; C-F, cells within lichen thallus; F, detail of a pyrenoid. White arrowheads in D, E and F indicate the tubules in pyrenoid periphery that are more similar to these which characterize the gigantea-type pyrenoid. Abbreviations: Chl, chloroplast; CW, cell wall; Pg, pyrenoglobuli; Py, pyrenoid; Tu, tubules; Nu, nucleus; s, starch granules. Scale bars: 2 µm.
FIG. 2 in Trebouxia maresiae sp. nov. (Trebouxiophyceae, Chlorophyta), a new lichenized species of microalga found in coastal environments
FIG. 2. — Habitat and morphology of Trebouxia maresiae Garrido-Benavent, Chiva & Barreno, sp. nov.: A, a thallus of the lichen Seirophora villosa (Ach.) FrÖdén from Es Trenc (Mallorca) with which this microalga associates; orange discs are apothecia produced by the lichen fungus to reproduce sexually; B-H, light microscopy photographs showing the gross morphology of vegetative cells and autosporangia; B, H, young and mature cells; C, central, crenulate chloroplast with a single pyrenoid; D, old cell with carotenoids in the cytoplasm; E-G, development of autosporangia and autospores; I-K, reconstruction of chloroplasts by LSCM; K, crenulate chloroplast with three pyrenoids (white arrowheads); L, reconstructed chloroplast of autospores within an autosporangium. Scale bars: 10 µm.
FIG. 1 in Trebouxia maresiae sp. nov. (Trebouxiophyceae, Chlorophyta), a new lichenized species of microalga found in coastal environments
FIG. 1. — Phylogram showing the placement of the new species in a subclade of Trebouxia Puymaly clade A sensu Muggia et al. (2020). The phylogeny was built with MrBayes based on a three-locus dataset (nrITS, 5.8S and rbcL). For reference, green- and orange-filled boxes on the right of each tip indicate the species code of each Trebouxia species following Muggia et al. (2020). To the right, the voucher or culture collection code, as well as the name of the species, if any, are provided. Posterior Probabilities (PP) and bootstrap support values (BS, RAxML-NG analysis) are represented on branches leading to nodes on the left and right, respectively. Branches in bold had a significant statistical support (PP ≥ 0.95; BS ≥ 70 %).
Figure 6. Axiopsis serratifrons A in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 6. Axiopsis serratifrons A. Milne-Edwards, 1873: a, male, MNHN IU-2013-637, anterior carapace, dorsal view. Parascytoleptus papua Poore and Collins, 2010, male, MNHN IU-2013-7128: b, major right cheliped. Paraxiopsis brocki (De Man, 1888), male, MNHN IU-2013-7108: c, anterior carapace, lateral view; d, antenna with scaphocerite; e, cheliped, merus; male, MNHN IU-2014-2736; f, g, pleopods 1, ventral and lateral views. Ralumcaris bisquamosa (De Man, 1905), male, MNHN IU-2013-7120: h, i, anterior carapace, dorsal and lateral views. Scale bars = 1 mm.
Figure 5 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 5. Allaxiopsis spinimana (De Man, 1905) male, NMV J67992: a, habitus; b, c, anterior carapace, dorsal and lateral views, with detail of rostrum; d, telson and uropod; e, major right cheliped, lateral; f, major right cheliped, fingers, mesial; g, minor left cheliped; h, maxilliped 3; i–l, pereopods 2–5; m, n, pleopod 2, with details of appendices interna and masculina. Scale bars = 1 mm. Bases of many setae indicated by small ovals.
Figure 4 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 4. Allaxiopsis picteti (Zehntner, 1894), males, MNHN IU-2013-1209: a, b, anterior carapace, dorsal and lateral views; c, telson and uropod; d, minor right cheliped. MNHN IU-2013-2526: e, major left cheliped. Scale bar = 1 mm.
Figure 2 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 2. Parascytoleptus papua Poore and Collins, 2010: a, MNHN IU-2014-2735; b, MNHN IU-2013-7128. Paraxiopsis brocki (De Man, 1888): c, MNHN IU-2013-7108; d, MNHN IU-2014-2736. Ralumcaris bisquamosa (De Man, 1905): e, MNHN IU-2013-7120. Photo credits: AA, b, c, e; TYC, a, d.
Figure 1 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 1. Alienaxiopsis clypeata (De Man, 1888): a, b, MNHN unregistered (stn PR86). Allaxiopsis picteti (Zehntner, 1894): c, MNHN IU-2013- 1209. Axiopsis pica Kensley, 2003, MNHN IU-2013-7048: d, preserved; e, living. Axiopsis serratifrons A. Milne-Edwards, 1873: f, MNHN IU-2013-638; g, h, MNHN IU-2013-7052; i, MNHN IU-2013-7046; j, MNHN IU-2013-302. Photo credits: AA, a–c, e, g–j; TYC, f; GCBP, d.
Figure 7 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 7. Michelea papua sp. nov., holotype: a, lateral carapace, antenna, antennule, maxilliped 3; b, carapace, antenna, antennule; c, pleomere 6, telson, uropod; d, maxilliped 3; e, f, g, pereopods 1, 3, 4; h, pereopod 5 dactylus; i, j, pleopods 1, 2. Scale bar = 1 mm.
Figure 3 in Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae)
Figure 3. Alienaxiopsis clypeata (De Man, 1888), male, MNHN IU-2016-8134: a, b, anterior carapace, dorsal and lateral views; c, telson and uropod; d, major left cheliped; e, minor right cheliped. Scale bar = 1 mm.
Population genomic and morphological datasets from: An evolutionary mosaic challenges traditional monitoring of a foundation species in a coastal environment - the Baltic Fucus vesiculosus
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Airborne spectral reflectance dataset of submerged plastic targets in a coastal environment (SUPPLEMENTARY DATA FILES)
<p>SUPPLEMENTARY DATA FILES for the paper entitled: "Airborne spectral reflectance dataset of submerged plastic targets in a coastal environment." Data are organized in three categories:</p> <p>- orthophoto maps (date in YYYY,MM,DD e.g. 20210615_SPOTS_Ortho_UTM_35N)</p> <p>- Hyper Cubes UTM_35N NO Normalized (date in YYYY,MM,DD_Flight number_Height_UTM zone e.g. 20210615_F47_H25_UTM_35N)</p> <p>Hyper Cubes UTM_35N Normalized (date in YYYY,MM,DD_Flight number_Height_UTM zone_NORM e.g. 20210615_F47_H25_UTM_35N_NORM)</p>
Dataset for Paul et al., "Trace metals in coastal marine sediments: Natural and anthropogenic sources, correlation matrices, and proxy potentials", Science of The Total Environment (STOTEN-175789, 2024)
<p>The datafile (.xlsx format) contains the solid phase data for all study sites presented in the associated STOTEN publication <a href="https://doi.org/10.1016/j.scitotenv.2024.175789" target="_blank" rel="noopener">(10.1016/j.scitotenv.2024.175789)</a></p> <ol> <li>specifics on the ICP-MS and ICP-OES analysis</li> <li>solid-phase data (Pb, Cd, Cu, Zn, Sb, Sn, Ni, As, Tl, V, Mo, U, Re, TOC, S, Fe, Mn, and Al)</li> <li>coefficient of variation test results (as a basis for evaluating the applicability of data normalizations to the data; i.e. calculation of Enrichment Factors, cf. method section of the original publication)</li> </ol> <p>Please note that the title of the paper and the publication number has changed upon final publication. The Excel file description still refers to the original manuscript number and title "Trace metals in coastal marine sediments: anthropogenic sources, correlation patterns, and proxy potentials".</p>
Figure 2 in Diet of bromeliad-frog Phyllodytes luteolus (Anura, Hylidae) in Atlantic Forest environments: what have the frogs been eating outside sandy coastal plains?
Figure 2. Non-metric multidimensional scaling (NMDS) plot for prey presence. The represented populations of P. luteolus in lowland forest (triangles), sandy coastal plains (circles) and island (squares) environments in Espírito Santo State, southeastern Brazil.
Figure 1 in Diet of bromeliad-frog Phyllodytes luteolus (Anura, Hylidae) in Atlantic Forest environments: what have the frogs been eating outside sandy coastal plains?
Figure 1. Study sites in Espírito Santo State, southeastern Brazil. Dark gray points represent the sampled Phyllodytes luteolus populations.
Uncovering bacterial hosts of class 1 integrons in an urban coastal aquatic environment with a single-cell fusion-polymerase chain reaction technology
<p>Horizontal gene transfer (HGT) is a key driver of bacterial evolution via transmission of genetic materials across taxa. Class 1 integrons are genetic elements that correlate strongly with anthropogenic pollution and contribute to the spread of antimicrobial resistance (AMR) genes via HGT. Despite their significance to human health, there is a shortage of robust, culture-free surveillance technologies for identifying uncultivated environmental taxa that harbour class 1 integrons. We developed a modified version of epicPCR (emulsion, paired isolation and concatenation PCR) that links class 1 integrons amplified from single bacterial cells to taxonomic markers from the same cells in emulsified aqueous droplets. Using this single-cell genomic approach and Nanopore sequencing, we successfully assigned class 1 integron gene cassette arrays containing mostly AMR genes to their hosts in coastal water samples that were affected by pollution. Our work presents the first application of epicPCR for targeting variable, multi-gene loci of interest. We also identified the <em>Rhizobacter</em> genus as novel hosts of class 1 integrons. These findings establish epicPCR as a powerful tool for linking taxa to class 1 integrons in environmental bacterial communities and offer the potential to direct mitigation efforts towards hotspots of class 1 integron-mediated dissemination of AMR.</p>
Uncovering bacterial hosts of class 1 integrons in an urban coastal aquatic environment with a single-cell fusion-polymerase chain reaction technology
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