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opencc-by-4.0Jan 2019View details →

Fig. 3 in Relative growth of freshwater prawn Macrobrachium brasiliense (Decapoda, Palaemonidae) and its implications for reproduction

Fig. 3. Scatterplots of the morphometric relationships for females of Macrobrachium brasiliense (Heller, 1862) (CL, carapace length; PW, pleura width; IL, ischial length; ML, merus length; CRL, carpus length; PPL, propodus length; DCL, dactYl length; PPH, propodus height; measurements in mm).

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KF-metaweb: A trophic metaweb of freshwater ecosystems of South Korea (Version 1.0)

Motivation: The metaweb is a dictionary of nodes and their potential interactions developed for a particular region, focusing on a particular type of ecosystem. Based on the local biodiversity information at different spatial and temporal scales, the regional metaweb can be easily decomposed into local webs. The generated local webs are useful for understanding spatiotemporal variations in ecological interactions in a particular region. In this study, an attempt was made to develop a trophic metaweb for freshwater ecosystems in South Korea, called the KF-metaweb. The metaweb contains 23074 interactions between 446 taxa collected from 730 studies. This metaweb can be used to understand the spatiotemporal variability of different local food webs and the effects of the environment on food web properties. Furthermore, this is the first metaweb developed for any Asian ecosystem that contains information about many interactions that are unavailable in any other existing database. In addition, this metaweb study enriches our global understanding of ecological interactions. Main types of variables contained: The data contained trophic interactions between resources (prey) and consumers (predators). Spatial location and grain: The mainland of South Korea and Jeju Island. Time period and grain: 2008–2021 Major taxa: Microalgae (belonging to the phyla Cyanobacteria, Bygra, Cryophyta, Myozoa, Ochrophyta, Charophyta, Chlorophyta, Euglenozoa, and Mycetozoa), zooplankton (belonging to the phyla Arthropoda and Rotifera), benthic macroinvertebrates (Platyhelmenthes, Annelida, Arthropoda, and Mollusca), and fish. Level of measurement: Minimum taxonomic resolution was at the genus level for fish and benthic macroinvertebrates and order level for zooplankton and microalgae.

opencc-zeroDec 2022View details →

FIG. 2 in Morphological and molecular characterization of Goleter sp. (Nostocales, Nostocaceae) isolated from freshwater in Iran

FIG. 2. — Micrographs of the isolate Goleter sp. in culture: A, older filaments featuring end cells with two corner "spines"; B, "spines" absent in young filaments; trichomes appear branched due to the proliferation of hormogonia derived from the main filaments; C, granular cell contents; D, filament uniseriate, biseriate or multiseriate; E, necridium cells occasionally found in the main filaments. Reproduction occurs via uniseriate hormogonia with two corner "spines" and bristles. Akinetes very rare; F, long branching filaments with prostrate main axes; G, trichomes often aggregate into subspherical multiseriate clumps. Heterocytes bone, shaped and spherical.Monocyte reproductive cells observed. Abbreviations:aki, akinete;biser, biseriate;brch, branching;clum, clump;gran, granules;het b, bone shaped heterocytes; het s, spherical shaped heterocytes; hor, hormogonium; mono, monocyte; multis, multiseriate; nec, necridium; non spi, "spines" absent; relea, released granules; spi, two corner "spines"; unise, uniseriate. Scale bars: 10 µm.

FIG. 1. — A-C in Morphological and molecular characterization of Goleter sp. (Nostocales, Nostocaceae) isolated from freshwater in Iran

FIG. 1. — A-C, Nostocaceae cyanobacterium in the original sampled site; D, colonies on a Petri dish.

FIG. 4 in Morphological and molecular characterization of Goleter sp. (Nostocales, Nostocaceae) isolated from freshwater in Iran

FIG. 4. — Secondary structures of the 16S-23S ITS of the isolate Goleter sp. and related Goleter sequences.

FIG. 3 in Morphological and molecular characterization of Goleter sp. (Nostocales, Nostocaceae) isolated from freshwater in Iran

FIG. 3. — Maximum likelihood (ML) phylogenetic tree for the isolate (Goleter sp., in red) and reference strains, based on 16S rRNA gene sequences (1490 bp). Gloeobacter violaceus Rippka, J.B.Waterbury & Cohen-Bazire is the outgroup. Bootstrap values are shown near nodes. Scale indicates phylogenetic distance. GenBank accession numbers are indicated next to species names. For further details on sequences and BLAST results, see Appendix 3. For p-distances, see Appendix 4.

APPENDIX 2. — BLASTN results for the 16S in Morphological and molecular characterization of Goleter sp. (Nostocales, Nostocaceae) isolated from freshwater in Iran

APPENDIX 2. — BLASTN results for the 16S rRNA gene of the isolate Goleter sp. against the standard nucleotide database.

Figure 5 in A histopathological study on the freshwater fish species chub (Squalius cephalus) in the Karasu River, Turkey

Figure 5. Photomicrograph of normal liver of the fish from Site S. Central vein (*), hepatocyte (arrow head), and sinusoid (arrow).

Figure 4 in A histopathological study on the freshwater fish species chub (Squalius cephalus) in the Karasu River, Turkey

Figure 4. Photomicrograph of pathologically abnormal gills of the fish from Site A. A Lamellar disorganization (arrows), B Blood congestion in secondary lamellae and the lamellar vascular axis (asterisks), C Partial fusion of some lamellae (arrows), D Aneurysm in lamellar vascular axis (arrows).

Figure 3 in A histopathological study on the freshwater fish species chub (Squalius cephalus) in the Karasu River, Turkey

Figure 3. Photomicrograph of pathologically abnormal gills of the fish from Site A. A Hypertrophy of the lamellar epithelium (arrows); B High severity of filamentary epithelium, hyperplasia that induced complete lamellar fusion (arrows), and vasodilatation of the central venous (*); C Lifting of lamellar epithelium (arrows) and cartilage tissue (arrow heads); D Lamellae shortening (arrows).

Figure 7 in A histopathological study on the freshwater fish species chub (Squalius cephalus) in the Karasu River, Turkey

Figure 7. Photomicrograph of abnormal liver of the fish from Site A. A Congestion of central vein (*), B Blood congestion in hepatic parenchyma (asterisks), C Epithelial degeneration of central vein (arrows), D Hepatic tissue showing necrosis areas (asterisks) and hepatocytes with pyknotic nucleus (arrows), E Hepatic granuloma (black arrow) consisting of melanomacrophage aggregates (white arrows) with lightly pigmented cytoplasm.

Figure 2 in A histopathological study on the freshwater fish species chub (Squalius cephalus) in the Karasu River, Turkey

Figure 2. Photomicrograph of normal gills of the fish from Site S. Normal aspect of the gill, showing secondary lamella (1), primary lamella (2), filament (F).

Figure 6 in A histopathological study on the freshwater fish species chub (Squalius cephalus) in the Karasu River, Turkey

Figure 6. Photomicrograph of abnormal liver of the fish from Site A. A Proliferation of the hepatopancreas (arrow); B Nonhomogeneous parenchyma tissue (colored dark and light hepatocytes); C Increasing melanomacrophage aggregates (arrows); D Sinusoidal dilatation (arrow head), hepatocyte hypertrophy (arrows), and necrosis (circle).

opencc-by-4.0Nov 2024View details →

Future freshwater fluxes from the Antarctic ice sheet

=============================================================== Future freshwater fluxes from the Antarctic ice sheet (dataset) =============================================================== ----------------------- INTRODUCTION ----------------------- This dataset contains historically-calibrated projections of Antarctic freshwater fluxes (ice-shelf melting, iceberg calving, and surface meltwater runoff) under low and very-high emission scenarios for 27 drainage basins and 5 ocean sectors until 2300. We perform, with the Kori-ULB ice-sheet model v0.91, an ensemble of historically-calibrated simulations of the Antarctic ice sheet between 1990 and 2300 forced by atmospheric and oceanic projections inferred from a subset of models from the sixth phase of the Coupled Model Intercomparison Project (CMIP6) under low- and very high-emission scenarios.  We refer to the associated manuscript for more information on the applied methodology. ------------------------- PROVIDED DATA ------------------------- <ul> <li>'SSP126_FWF_1990_2300_ZwallyBasins.nc' and 'SSP585_FWF_1990_2300_ZwallyBasins.nc' each contain yearly timeseries of the [5 25 50 75 95] percentiles for the calibrated probabilistic projections of Antarctic net mass balance, surface mass balance, sub-shelf melt, and calving fluxes (in Gt/yr) for each of the 27 Zwally drainage basins (see http://imbie.org/imbie-2016/drainage-basins/) under a SSP1-2.6 and SSP5-8.5 scenario, respectively. </li> <li>'SSP126_FWF_1990_2300_OceanSectors.nc' and 'SSP585_FWF_1990_2300_OceanSectors.nc' each contain yearly timeseries of the [5 25 50 75 95] percentiles for the calibrated probabilistic projections of Antarctic net mass balance, surface mass balance, sub-shelf melt, and calving fluxes (in Gt/yr) for each of the 5 ocean sectors (Weddell Sea, Indian Ocean, western Pacific Ocean, Ross Sea, Amundsen & Bellingshausen Sea) under a SSP1-2.6 and SSP5-8.5 scenario, respectively. </li> <li>'SSP126_FWF_1990_2300_AIS.nc' and 'SSP585_FWF_1990_2300_AIS.nc' each contain yearly timeseries of the [5 25 50 75 95] percentiles for the calibrated probabilistic projections of Antarctic net mass balance, surface meltwater runoff, sub-shelf melt, and calving fluxes (in Gt/yr) for the Antarctic Ice Sheet under a SSP1-2.6 and SSP5-8.5 scenario, respectively.</li> </ul>

opencc-by-4.0Oct 2024View details →

UNEP GEMS/Water Global Freshwater Quality Archive

Large-sample datasets are essential in hydrological science to support modelling studies and global assessments. The present dataset compiles all freshwater quality data that is available under open data policy (CC BY 4.0 or equivalent) at the GEMStat database for global water quality (<a href="http://www.gemstat.org">www.gemstat.org</a>). It includes over 20,000,000 measurements on 608 water quality parameters, covering 13,660 stations in 37 countries over the time period from 1906 to 2023. GEMStat is operated by the GEMS/Water programme of the United Nations Environment Programme (UNEP) and hosted at the International Centre for Water Resources and Global Change (ICWRGC) and the German Federal Institute of Hydrology (BfG). The data in GEMStat is provided by National Hydrological Services of UN member states. The data available here at Zenodo consists of a zip archive with individual csv files for different parameter groups. Three csv files provide metadata information on stations (GEMStat_station_metadata.csv), parameters (GEMStat_parameter_metadata.csv) and analytical methods (GEMStat_method_metadata.csv). A text file (README_output_format.txt) gives information on the different entriy classes in the data files. If you have querries regarding the dataset, please contact the GEMS/Water Data Centre via email to <a href="mailto:gwdc@bafg.de">gwdc@bafg.de</a>. Version v2 An error was corrected that led to overestimation for all parameters in Version v1. To avoid further download of Version v1, access to it has been restricted while Version v2 is publicly available.

Fig. 12. Holotypes. A–C. H in On the origin and diversification of the stygobiotic freshwater snail genus Hauffenia (Caenogastropoda: Hydrobiidae) with special focus on the northern species and the description of two new species

Fig. 12. Holotypes. A–C. H. lozekiana sp. nov. (NHMW 113638). D–E. H. steffeki sp. nov. (NHMW 113640). Scale bar = 500 µm.

Fig. 1 in On the origin and diversification of the stygobiotic freshwater snail genus Hauffenia (Caenogastropoda: Hydrobiidae) with special focus on the northern species and the description of two new species

Fig. 1. Current distribution of Hauffenia Pollonera, 1898 in relation to the extension of the Pannonian Sea 10 Ma.

Fig. 17 in On the origin and diversification of the stygobiotic freshwater snail genus Hauffenia (Caenogastropoda: Hydrobiidae) with special focus on the northern species and the description of two new species

Fig. 17. Penes (SEM micrographs). A–B. H. lozekiana sp. nov. (different specimens). C–E. H. steffeki sp. nov. (one specimen). Arrow points at penial stylet, which is withdrawn in A and B. Scale bars: A–C = 50 µm; D = 10 µm; E = 2 µm.

Fig. 9 in On the origin and diversification of the stygobiotic freshwater snail genus Hauffenia (Caenogastropoda: Hydrobiidae) with special focus on the northern species and the description of two new species

Fig. 9. Phylogenetic time-tree from Bayesian analysis in BEAST based on COI. Specimens identified by two-digit locality code in bold, four digit individual DNA code, and orographic unit (see Table 1) or GenBank accession number (from Wilke & Davis 2000; Wilke 2003; Ponder et al. 2008; Falniowski & Szarowska 2015; Barco et al. 2016; Rysiewska et al. 2017); posterior probabilities and highest posterior density intervals at nodes; arrow points at calibrated node; scale bar in substitutions per site; timeline on bottom in Ma before present.

Fig. 6 in On the origin and diversification of the stygobiotic freshwater snail genus Hauffenia (Caenogastropoda: Hydrobiidae) with special focus on the northern species and the description of two new species

Fig. 6. Phylogenetic tree from Bayesian analysis in MrBayes based on 16S rRNA and ITS2 (outgroup pruned off). Specimens identified by two-digit locality code in bold, four digit individual DNA code, and orographic unit (see Table 1) or GenBank accession number (from Ponder et al. 2008); posterior probabilities at nodes; scale bar in substitutions per site.