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403 results for “clams”
Interagency Ecological Program: Monitoring of water quality, phytoplankton, zooplankton, clams, and Delta Smelt to support the Summer-Fall Suisun Marsh Salinity Control Gates Action 2018-2024
The Suisun Marsh Salinity Control Gates (SMSCG) have the potential to increase low-salinity-zone habitat for endangered Delta Smelt (Hypomesus transpacificus, California Endangered Species Act listed as Endangered, Federal Endangered Species Act listed as Threatened), and to allow them to more frequently occupy Suisun Marsh, especially Montezuma Slough, one of their most important rearing habitats. Operation of the SMSCG in summer and fall to improve Delta Smelt habitat are called for in the Biological Opinion and Incidental Take permit for the Central Valley Project and State Water Project. To support the adaptive management of the action, the California Department of Water Resources and collaborating agencies monitored water quality, phytoplankton, zooplankton, clams, and fishes during the SMSCG management actions in 2018. Monitoring has continued during the summer and fall months of all subsequent years, including both those with and without actions. This data package includes data collected by the Interagency Ecological Program’s (IEP) long-term monitoring programs supplemented with targeted sample collection where existing surveys lacked spatial or temporal coverage. Monitoring during no-action years will be used as a baseline for comparison during action years. This data package will be updated annually.
CLaMS mean age of air tracers for 15/01/2011 interpolated on simulated CAIRT retrieval grid
<p>The dataset contains simulation results from the Chemical Lagrangian Model of the Stratosphere (CLaMS) for January 15, 2011. These results are interpolated onto the simulated retrieval grid of the Changing-Atmosphere Infrared Tomography Explorer (CAIRT). The data includes six trace gases (SF₆, N₂O, CFC-11 (F11), CFC-12 (F12), HCFC-22 (F22), and CH₄) and the "exact" model mean age of air (BA). The file is provided in NetCDF format.</p>
Striped venus clam (Chamelea gallina) abundance, size, and biomass off Bevano River mouth (2019)
<p>This dataset provides the abundance (ind. m<sup>-2</sup>) of the striped venus clams, <em>Chamelea gallina</em> (Linnaeus, 1758), at 71 random sampling points (Fig. 3) from 0.5 to 8 m depth along the coast (5 km) off the NATURA 2000 site IT4070009 "Ortazzo, Ortazzino e Foce del Torrente Bevano", sampled from 22 May to 4 July, 2019. Where available, the mean and standard deviation of shell length (i.e. the maximum distance between anterior and posterior margins) of <em>Chamelea gallina </em>determined to the nearest 0.01 mm using a manual calliper, and the wet biomass per square metre (g m<sup>-2</sup>), estimated on the basis of the mean shell length, by length–weight relationship (according to <a href="https://doi.org/10.1080/24750263.2019.1668066">Petetta et al., 2019</a>), were provided. Depth, sediment grain size, and organic matter at each point are also provided. </p> <p>The dataset is provided in three formats: </p> <ul> <li>Microsoft Excel XLSX file, including 3 sheets (Dataset, Fields and units, Parameters) </li> <li>CSV files (UTF-8), 3 files corresponding to the 3 sheets of the Excel file </li> <li>ESRI Shapefile (UTF-8, geometry point, EPSG:4326 - WGS 84)</li> </ul> <p> </p> <p>The dataset includes 71 records, one for each sampling point, and 17 fields, which are described in the Excel sheet/CSV file “Fields and units” (see also Table 6). The Excel sheet/CSV file provides details and coefficients of the length–weight relationship (log W= log a + b log L; where: W=wet weight (g), L=length (mm), Log base=10) used to estimate the wet biomass from the mean lengths and abundances (the calculation formulas are present in the Excel sheet).</p> <p>Finally, ESRI Shapefile provides users with direct upload in any Geographic Information System (GIS). Nevertheless, due to this file format limitations, dataset field names have been truncated and/or renamed to fit 10 characters.</p> <p>Fields in the dataset (NA=not available).</p> <table> <thead> <tr> <th scope="col"> <p><strong>Field</strong></p> </th> <th scope="col"> <p><strong>Darwin Core term</strong></p> </th> <th scope="col"> <p><strong>Unit</strong></p> </th> <th scope="col"> <p><strong>Precision</strong></p> </th> <th scope="col"> <p><strong>Note</strong></p> </th> </tr> </thead> <tbody> <tr> <td> <p>locationID</p> </td> <td> <p>locationID</p> </td> <td> <p>NA</p> </td> <td> <p>NA</p> </td> <td> <p>Sampling location identifier (ID) specific to the data set</p> </td> </tr> <tr> <td> <p>samplingDate</p> </td> <td> <p>eventDate</p> </td> <td> <p>YYYY-MM-DD</p> </td> <td> <p>NA</p> </td> <td> <p>Conforms to ISO 8601-1:2019</p> </td> </tr> <tr> <td> <p>samplingTime</p> </td> <td> <p>eventTime</p> </td> <td> <p>HH:MM</p> </td> <td> <p>± 10 min</p> </td> <td> <p>Central European Summer Time CEST (UTC+2) conforms to ISO 8601-1:2019</p> </td> </tr> <tr> <td> <p>decimalLatitude</p> </td> <td> <p>decimalLatitude</p> </td> <td> <p>decimal degrees</p> </td> <td> <p>± 0.00001</p> </td> <td> <p>WGS84 (EPSG: 4326) - WAAS/EGNOS enabled GPS position</p> </td> </tr> <tr> <td> <p>decimalLongitude</p> </td> <td> <p>decimalLongitude</p> </td> <td> <p>decimal degrees</p> </td> <td> <p>± 0.00001</p> </td> <td> <p>WGS84 (EPSG: 4326) - WAAS/EGNOS enabled GPS position</p> </td> </tr> <tr> <td> <p>Depth</p> </td> <td> <p>maximumDepthInMeters</p> </td> <td> <p>m</p> </td> <td> <p>± 0.1</p> </td> <td> <p>Mean Lower Low Water - measured with echosounder or depth gauge corrected by tide gauge of Porto Corsini (RA)</p> </td> </tr> <tr> <td> <p>SamplingGear</p> </td> <td> <p>NA</p> </td> <td> <p>NA</p> </td> <td> <p>NA</p> </td> <td> <p>Van Veen grab operated from boat or bailer manually operated by diver inside a cylindrical frame</p> </td> </tr> <tr> <td> <p>SamplingArea</p> </td> <td> <p>NA</p> </td> <td> <p>m2</p> </td> <td> <p>± 0.001</p> </td> <td> <p>Sampler size</p> </td> </tr> <tr> <td> <p>Mud</p> </td> <td> <p>NA</p> </td> <td> <p>% dry mass</p> </td> <td> <p>± 0.1%</p> </td> <td> <p>Sediment particles <63 µ wet sieved recovered on Whatman filter paper and then dried at 80°C for 24 hours before weighing at ± 0.00001 g</p> </td> </tr> <tr> <td> <p>FineSand</p> </td> <td> <p>NA</p> </td> <td> <p>% dry mass</p> </td> <td> <p>± 0.1%</p> </td> <td> <p>Sediment particles 250-63 µ wet sieved recovered on Whatman filter paper and then dried at 80°C for 24 hours before weighing at ± 0.00001 g</p> </td> </tr> <tr> <td> <p>MediumSand</p> </td> <td> <p>NA</p> </td> <td> <p>% dry mass</p> </td> <td> <p>± 0.1%</p> </td> <td> <p>Sediment particles >250 µ wet sieved recovered on Whatman filter paper and then dried at 80°C for 24 hours before weighing at ± 0.00001 g</p> </td> </tr> <tr> <td> <p>OrganicMatter</p> </td> <td> <p>NA</p> </td> <td> <p>% dry mass</p> </td> <td> <p>± 0.1%</p> </td> <td> <p>Sediment organic matter content obtained by Loss of weight on Ignition (LOI%) at 450°C 8h and weighted at ± 0.00001 g</p> </td> </tr> <tr> <td> <p>Individuals</p> </td> <td> <p>NA</p> </td> <td> <p>ind. sample-1</p> </td> <td> <p>± 1</p> </td> <td> <p>Individuals of <em>Chamelea gallina </em>retrieved in each sample, preserved in alcohol sorted and classified under microscope</p> </td> </tr> <tr> <td> <p>Abundance</p> </td> <td> <p>NA</p> </td> <td> <p>ind. m-2</p> </td> <td> <p>± 10</p> </td> <td> <p>Abundance of <em>Chamelea gallina</em> per square meter estimated on the basis of the sampling area</p> </td> </tr> <tr> <td> <p>MeanLength</p> </td> <td> <p>NA</p> </td> <td> <p>mm</p> </td> <td> <p>± 0.01</p> </td> <td> <p>Mean shell length (i.e. the maximum distance between anterior and posterior margins) of <em>Chamelea gallina</em> determined to the nearest 0.01 mm using a manual calliper</p> </td> </tr> <tr> <td> <p>SDLength</p> </td> <td> <p>NA</p> </td> <td> <p>mm</p> </td> <td> <p>± 0.01</p> </td> <td> <p>Standar deviation of mean shell length of <em>Chamelea gallina</em></p> </td> </tr> <tr> <td> <p>WetMass</p> </td> <td> <p>NA</p> </td> <td> <p>g m-2</p> </td> <td> <p>± 1</p> </td> <td> <p>Wet biomass per square meter of <em>Chamelea gallina</em> estimated on the basis of the mean shell length, by length–weight relationship (according to <a href="https://doi.org/10.1080/24750263.2019.1668066">Petetta et al., 2019</a> DOI:10.1080/24750263.2019.1668066), and abundnce</p> </td> </tr> </tbody> </table> <p> </p> <p>This dataset comes from the project "Characterization of the mouth area of the Bevano River and identification of strategies for the conservation and enhancement of nursery areas for protected species of commercial interest", carried out by the Interdepartmental Research Center for Environmental Sciences (CIRSA) of the Alma Mater Studiorum University of Bologna. The project was financed by the Emilia-Romagna Region (call FLAG Costa dell'Emilia-Romagna 2018) with funds from the European Union (FEAMP 2014/2020, Action 2.A.a, "Marine and lagoon habitats - Studies and research"), and took place from January to August 2019 (<a href="https://doi.org/10.5281/zenodo.4016598">Abbiati et al., 2019</a>). Finally, this dataset has been revised and completed within the project “Ecosystem for Sustainable Transition in Emilia-Romagna” (ECOSISTER, Code: ECS_00000033 - CUP: B33D21019790006).</p> <p> </p>
Figure 4 in First records of a leptestherid clam shrimp in Australia (Crustacea, Spinicaudata, Leptestheriidae, Eoleptestheria)
Figure 4. Females of Eoleptestheria ticinensis from Kuranda, Queensland (A,C,D) and from Benmore Well clay pan, Western Australia (B,E,F). A, B carapaces, growth lines not shown as they are too numerous C, E heads D, F telsons. Scale bars 1 mm.
Figure 18 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 18. The anatomy of Paphies elongata (a and b) compared with that of Donax hanleyanus (c and d), both drawn to the same relative scale (for actual scales see the earlier illustrations). (a) and (c) are views of the apertures of the inhalant siphons; (b) and (d) are the internal organs of the mantle cavity showing the visceral mass and foot, the musculature, the orientation of the ctenidia and labial palps and the simplified intestine. (c) is re-drawn after Luzzatto and Penchaszadeh (2001, fig. 1); (d) is a compendium of re-drawn figures from Narchi (1978). (See previous illustrations for interpretations of structure).
Figure 15 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 15. Paphies elongata. The course of the intestine in the visceral mass as seen from the right side. AA(1), anterior adductor muscle(1); AN, anus; APR, anterior pedal retractor muscle; CSS, crystalline style sac; DD, digestive diverticulae; DEF, dorsal extension of the foot; EMG, expanded region of the mid gut; F, foot; G, gonad; H, heart; HF, heel of the foot; HG, hind gut; M, mouth; MG, mid gut; PA, posterior adductor muscle; PPR, posterior pedal retractor muscle; R, rectum.
Figure 11. Paphies elongata. A in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 11. Paphies elongata. A more detailed illustration of the anterior adductor muscle complex. AA(1), anterior adductor muscle (1); AA(2), anterior adductor muscle (2); APEM, anterior pedal elevator muscles; APP, anterior pedal protractor muscle; APR, anterior pedal retractor muscle scar; VM, visceral mass.
Figure 9 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 9. Paphies elongata. (a) the organs of the mantle cavity as seen from the left side after removal of the left shell valve and mantle lobe. (b) A diagrammatic transverse section through the left ctenidium showing the ciliary currents. AA(1), anterior adductor muscle(1); APR, anterior pedal retractor muscle; CA, ctenidial axis; DEF, dorsal extension of the foot; ES, exhalant siphon; FMM, fused mantle margin; HF, heel of the foot; ID, inner demibranch; IS, inhalant siphon; F, foot; OD, outer demibranch; OLP, outer labial palp; PA, posterior adductor muscle; PPR, posterior pedal retractor muscle; PR, prodissoconch; SAE, supra-axial extension of the outer demibranch; VMFG, ventral margin food groove of the inner demibranch.
Figure 5. Paphies elongata. A in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 5. Paphies elongata. A more detailed view of the hinge plate of the right valve showing the structure of the ligament. ACT, anterior cardinal tooth; ALT, anterior lateral tooth; AOLL, anterior outer ligament layer; ILL, inner ligament layer; P, periostracum; PCT, posterior cardinal tooth; PLT?, possible posterior lateral tooth; POLL, posterior outer ligament layer; PR, prodissoconch; RE, resilifer; S, socket.
Figure 4 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 4. Paphies elongata. Internal views of (a) the left and (b) the right hinge plates. ACT, anterior cardinal tooth; ALT, anterior lateral tooth; L, ligament; PCT, posterior cardinal tooth; PLT?, possible posterior lateral tooth; S, socket.
Figure 3 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 3. Paphies elongata. An internal view of the right shell valve showing the hinge plate and the muscle scars. The black dot indicates the position of the only naticid drill hole found in any of the empty valves collected. AA(1), anterior adductor muscle scar(1); AA(2), anterior adductor muscle scar (2); APP, anterior pedal protractor muscle scar; APR, anterior pedal retractor muscle scar; PA, posterior adductor muscle scar; PG, pedal gape sinus scar; PL, pallial line scar; PPR, posterior pedal retractor muscle scar; PS, pallial sinus; U, umbo.
Figure 13 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 13. Paphies elongata. The ciliary currents of the left mantle lobe. AA(1), anterior adductor muscle(1); AA(2), anterior adductor muscle(2); APR, anterior pedal retractor muscle; PA, posterior adductor muscle; PGS, pedal gape sinus scar; PL, pallial line; PPR, posterior pedal retractor muscle; PR, prodissoconch; PS, pallial sinus.
Figure 1. Paphies elongata. A in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)
Figure 1. Paphies elongata. A living individual in its life position in the sediment. Closed arrow represents the inhalant stream, open arrows the exhalant.
CLaMS results used for age of air analysis in the report of assessment of the ESA Earth Explorer candidate mission CAIRT
<p>Results of the Chemical Lagrangian Model of the Stratosphere (CLaMS) used for age of air analysis in the report of assessment of the ESA Earth Explorer candidate mission CAIRT. Days of results: 2011-01-01, 2011-04-01, 2011-07-01, 2011-10-01 and 2019-09-23. Included trace gases: SF6, CFC-11, CFC-12, HCFC-22, N2O and CH4. The results also include the clock tracer BA, which can be converted into the precise mean age of or air of the model environment with the attached python script 'AOA2age_years.py'.</p>
Fig. 3 in Description of a new genus and species of bopyrid (Isopoda: Epicaridea: Bopyridae) from the pinnotherid crab, Plenotheres coarctatus (Bürger, 1895), associated with mangrove clams from Vietnam
Fig. 3. Rhizophoracepon magnagibbus, new genus, new species, paratype females (ZRC 2023.0054). A, left antennule (A1) and antenna (A2); B, left barbula; C, left pereopod 1; D, left pereopod 7; E, left oostegite 1, outer view (dashed lines show close up of setae on posterior lobe); F, left oostegite 1, inner view (dashed lines show close up of setae on anterior lobe); G, left maxilliped, outer view; H, coxal plates and tergal projections on pereomeres 5–7; I, pleopod and lateral plate of pleomere 1, left side, dorsal view; J, pleopod and lateral plate of pleomere 5, left side, dorsal view (arrow shows where lateral plate was attached); K, uropods plus pleopod and lateral plate of pleomere 5 from left side, dorsal view; L, uropods plus pleopod and lateral plate of pleomere 5 from left side, ventral view. (cp = coxal plates, en = endopod, ex = exopod, lp = lateral plate, tp = tergal projections, Uro = uropods). Scale bars = 100 mm (A, C, D), 500 µm (B, E–L), 25 µm (insets of E, F).
Fig. 2 in Description of a new genus and species of bopyrid (Isopoda: Epicaridea: Bopyridae) from the pinnotherid crab, Plenotheres coarctatus (Bürger, 1895), associated with mangrove clams from Vietnam
Fig. 2. Light microscope images of the host crab Plenotheres coarctatus (Bürger, 1895) (ZRC 2022.0054) and the parasitic isopod Rhizophoracepon magnagibbus, new genus, new species. A, P. coarctatus, dorsal view showing swelling of left branchial chamber caused by R. magnagibbus (ZRC 2023.0053); B, P. coarctatus (Bürger, 1895), dorsal view showing swelling of left branchial caused by R. magnagibbus (ZRC 2023.0054); C, P. coarctatus, posterior view showing vaulted left branchial caused by R. magnagibbus (ZRC 2023.0054); D, paratype female, dorsal view (ZRC 2023.0053) from host shown in A; E, paratype female, ventral view from host shown in A; F, allotype male, dorsal view (ZRC 2023.0052); G, allotype male, ventral view (ZRC 2023.0052); H, holotype female, dorsal view (ZRC 2023.0051); I, paratype female and male pair, lateral view (ZRC 2023.0054), from host shown in B, C. Scale bars = 2.5 mm (A–C), 1.25 mm (D, E, H, I), 1 mm (F, G).
Fig. 1 in Description of a new genus and species of bopyrid (Isopoda: Epicaridea: Bopyridae) from the pinnotherid crab, Plenotheres coarctatus (Bürger, 1895), associated with mangrove clams from Vietnam
Fig. 1. Live images of the host crab Plenotheres coarctatus (Bürger, 1895) and the parasitic isopod Rhizophoracepon magnagibbus, new genus, new species. A, Plenotheres coarctatus, oblique lateral view showing swelling of left branchial chamber caused by R. magnagibbus (male parasite can be seen through swelling by the paired, opaque white dots to side of dark mid-line); B, Plenotheres coarctatus, dorsal view showing swelling of left branchial chamber caused by R. magnagibbus.
Figure 10 in A new Northeast Asian Lynceus (Crustacea: Branchiopoda: Laevicaudata) with uniquely modified thoracopods and an evaluation of DNA barcoding for clam shrimp species identification
Figure 10. Genetic distances and DNA barcoding gaps in clam shrimps. A. Stacked histogram of p-distances (yellow) and K2P genetic distances (blue) between pairs of COX1 sequences available in GenBank (accession date: 11/11/2018) for every suborder of clam shrimp (Laevicaudata, Spinicaudata, and Cyclestherida). The presence of a DNA barcoding gap is highlighted with a dashed vertical line. B. Saturation plot showing the strong correlation between p-distances and corrected genetic distances (Kimura 2-parameter).
Figure 9. Lynceus grossipedia n in A new Northeast Asian Lynceus (Crustacea: Branchiopoda: Laevicaudata) with uniquely modified thoracopods and an evaluation of DNA barcoding for clam shrimp species identification
Figure 9. Lynceus grossipedia n. sp., male, light microscopy of right side thoracopods (unmodified) (paratype, NHMD-616086). A. Thoracopods I (male clasper) and II, seen from posterior. B. Higher magnification of clasper. C–K. Thoracopods III–X, seen from anterior; all of "regular" Lynceus type (= unmodified). Arrows indicate broken/hidden parts.
Figure 8. Lynceus grossipedia n in A new Northeast Asian Lynceus (Crustacea: Branchiopoda: Laevicaudata) with uniquely modified thoracopods and an evaluation of DNA barcoding for clam shrimp species identification
Figure 8. Lynceus grossipedia n. sp., male, light microscopy of left side thoracopods, seen from anterior (paratype, NHMD-616086). A. Thoracopod I (male clasper). B. Higher magnification of clasper. C–K. Thoracopods II–X of which III–VI (D–G) are modified, not least with notably enlarged muscular bases. F. Thoracopod V with endopod and distal part of exopod explanate. G. Thoracopod VI with exopod proximal part with ~7 knob-shaped processes and distal part highly setose (seen better on SEM images, Fig. 7H), endites 4–5 and endopod non-visible as folded behind thoracopod. Arrows indicate broken/hidden parts.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.