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45 results for “Soft sediments”
Рис. 3. Фотографии Laternula elliptica, сделанные около cтанции «Прогресс», ВосточнаЯ Антарктида. L. elliptica на морском дне с медкими камнЯми или гравием, глубина 27 м (А); несколько сифональных отверстий L. elliptica над поверхностью мЯгких осадков вокруг голотурии Staurocucumis turqueti, глубина 27 м (В); раковина L. elliptica (длина около 110 мм) на снегу около майны сраЗу после иЗвлечениЯ иЗ воды (С); пустые раковины L. elliptica на морском дне, глубина 56 м (D); раковина L. elliptica (вид с дорсального краЯ) на мЯгких осадках с камнЯми, покрытыми иЗвестковыми водорослЯми, глубина 30 м (Е); пара сифональных отверстий L. elliptica на поверхности мЯгких осадков, глубина 27 м (F). Фотографии О. Савинкина (A, B, D–F) и В. Потина (С). Fig. 3. Photographs of Laternula elliptica taken near «Progress» Research Station (East Antarctica). Softshelled clam L. elliptica on sea bottom with small stowns or gravel, depth 27 m (A); several open siphons of L. elliptica above soft bottom sediments around holothurian Staurocucumis turqueti, depth 27 m (B); a shell of L. elliptica (length about 110 mm) on snow near a dive hole just after dragging out of water (C); empty shells of L. elliptica on seafloor, depth 56 m (D); a shell of Laternula elliptica (dorsal view) on soft deposits among stones, covering by Lithothamnion, depth 30 m (E); pair of siphonal opening of L. elliptica on surface of soft sediments, depth 27 m (F). Photographs are taken by O. Savinkin (A, B, D–F) and V. Potin (C). in Species of warm-water origin Laternula elliptica (King, 1832) (Mollusca: Bivalvia: Laternulidae), a widespread mollusk in recent Antarctica
Рис. 3. Фотографии Laternula elliptica, сделанные около cтанции «Прогресс», ВосточнаЯ Антарктида. L. elliptica на морском дне с медкими камнЯми или гравием, глубина 27 м (А); несколько сифональных отверстий L. elliptica над поверхностью мЯгких осадков вокруг голотурии Staurocucumis turqueti, глубина 27 м (В); раковина L. elliptica (длина около 110 мм) на снегу около майны сраЗу после иЗвлечениЯ иЗ воды (С); пустые раковины L. elliptica на морском дне, глубина 56 м (D); раковина L. elliptica (вид с дорсального краЯ) на мЯгких осадках с камнЯми, покрытыми иЗвестковыми водорослЯми, глубина 30 м (Е); пара сифональных отверстий L. elliptica на поверхности мЯгких осадков, глубина 27 м (F). Фотографии О. Савинкина (A, B, D–F) и В. Потина (С). Fig. 3. Photographs of Laternula elliptica taken near «Progress» Research Station (East Antarctica). Softshelled clam L. elliptica on sea bottom with small stowns or gravel, depth 27 m (A); several open siphons of L. elliptica above soft bottom sediments around holothurian Staurocucumis turqueti, depth 27 m (B); a shell of L. elliptica (length about 110 mm) on snow near a dive hole just after dragging out of water (C); empty shells of L. elliptica on seafloor, depth 56 m (D); a shell of Laternula elliptica (dorsal view) on soft deposits among stones, covering by Lithothamnion, depth 30 m (E); pair of siphonal opening of L. elliptica on surface of soft sediments, depth 27 m (F). Photographs are taken by O. Savinkin (A, B, D–F) and V. Potin (C).
Data from: Burrowing crab effects on the properties and functions of coastal soft sediments
<p>Burrowing ecosystem engineers, such as termites, crabs, marmots, and foxes, can profoundly affect the biological structure and ecosystem functions of their environments. However, the relative importance of burrowing engineers on sediments are challenging to predict and are expected to be influenced by engineer density, engineer functional traits (e.g., burrow morphology), and environmental conditions (e.g., geomorphology, vegetation presence). To develop robust hypotheses predicting the impacts of burrowing ecosystem engineers, we conducted a systematic meta-analysis evaluating the effects of burrowing crabs on sediment properties, nutrient stocks, and ecosystem functions in coastal soft-sediment habitats (e.g., salt marshes, mangrove forests, tidal flats). The data set includes 1422 effect size calculations for the effects of burrowing crabs on sediments collected from 59 total manuscripts. The data suggest that burrowing crabs rework and oxygenate sediments and accelerate rates of nutrient cycling (i.e., nitrification and CO<sub>2</sub> flux). However, the magnitude and direction of burrowing crab effects depend on burrowing crab superfamily, the presence of vegetation, and their interaction. Crab burrow density does not consistently predict burrowing engineer effects on sediments. </p>
Data from: Burrowing crab effects on the properties and functions of coastal soft sediments
Open the record for dataset details and reuse information.
Data for: Direct and indirect ecosystem responses to vehicle compaction of soft sediments
Open the record for dataset details and reuse information.
Figure 5 in Invertebrate communities, sediment parameters and food availability of intertidal soft-sediment ecosystems on the north coast of British Columbia, Canada
Figure 5. Non-metric multidimensional scaling (nMDS) plots showing infaunal invertebrate community at three intertidal sandy shore sites on the north coast of British Columbia, Canada during the summer of 2017. (a) the infaunal community by sandy shore site and sampling round and (b) the vector overlay indicates the direction of increased density, with correlations>0.3 shown. BO: Boulder Beach. GU: Coast Guard Beach. PI: Prescott Inlet. Round A: 23 May–1 June. Round B: 21–26 June. Round C: 19–25 July. Round D: 18–24 August.
Figure 6 in Invertebrate communities, sediment parameters and food availability of intertidal soft-sediment ecosystems on the north coast of British Columbia, Canada
Figure 6. Non-metric multidimensional scaling (nMDS) plots of (a) sediment parameters (depth to the aRPD, water content, particle size, penetrability, % macrophyte coverage, % Zostera marina cover, and % wood cover) by site and round and (b) the food availability (chlorophyll a and organic matter content) at three intertidal sandy shore sites on the north coast of British Columbia, Canada during the summer of 2017. Vector overlays for sediment and food variables show the correlation between variables and nMDS axes, with each vector showing the direction of increased value. BO: Boulder Beach. GU: Coast Guard Beach. PI: Prescott Inlet. Round A: 23 May 23–1 June. Round B: 21–26 June. Round C: 19–25 July. Round D: 18–24 August.
Figure 2 in Invertebrate communities, sediment parameters and food availability of intertidal soft-sediment ecosystems on the north coast of British Columbia, Canada
Figure 2. Flow chart demonstrating statistical analysis conducted on the biotic and abiotic variables sampled at intertidal mudflats (n = 3) and intertidal sandy shores (n = 3) on the north coast of British Columbia, Canada during the summer of 2017.
Figure 1 in Invertebrate communities, sediment parameters and food availability of intertidal soft-sediment ecosystems on the north coast of British Columbia, Canada
Figure 1. Map of intertidal mudflats and sandy shore study sties around Prince Rupert, and on Prescott Island, British Columbia, sampled during summer of 2017. Figure 1(a) shows mudflats close to the Skeena River (CC: Cassiar Cannery 54.1747, 130.1721; TB: Tyee Banks 54.2000, 129.9634; WC: Wolfe Cove 54.2424, 130.2730). Figure 1(b) shows sandy shores on Prescott Island (BO: Boulder Beach 54.0871, 130.5970; PI: Prescott Inlet 54.0709, 130.5950; GU: Coast Guard Beach 54.0659, 130.5757).
Figure 3 in Invertebrate communities, sediment parameters and food availability of intertidal soft-sediment ecosystems on the north coast of British Columbia, Canada
Figure 3. Non-metric multidimensional scaling (nMDS) graphs showing infaunal invertebrate community at three intertidal mudflats on the north coast of British Columbia, Canada during the summer of 2017. (a) the infaunal community by mudflat and sampling round and (b) the vector overlay indicates the direction of increased density, with correlations>0.3 shown. CC: Cassiar Cannery. TB: Tyee Banks. WC: Wolfe Cove. Round A: 23 May–June 1. Round B: 21–26 June. Round C: 19–25 July. Round D: 18–24 August.
Figure 4 in Invertebrate communities, sediment parameters and food availability of intertidal soft-sediment ecosystems on the north coast of British Columbia, Canada
Figure 4. Non-metric multidimensional scaling (nMDS) plots of (a) sediment parameters (depth to the aRPD [apparent redox potential discontinuity], water content, particle size, penetrability, % macrophyte coverage, and % wood cover) by site and round and (b) the food availability (chlorophyll a and organic matter content) at three intertidal mudflats on the north coast of British Columbia, Canada during the summer of 2017. Vector overlays for sediment and food variables show the correlation between variables and nMDS axes, with each vector showing the direction of increased value. CC: Cassiar Cannery. TB: Tyee Banks. WC: Wolfe Cove. Round A: 23 May–1 June. Round B: 21–26 June. Round C: 19–25 July. Round D: 18–24 August.
FIGURE 13 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 13. Leptochelia tanykeraia sp. nov., female, A, cheliped; B, pereopod 1; C, pereopod 2; D, pereopod 4; E, pereopod 6; F, pleotelson and right uropod. Scale line = 0.2 mm.
FIGURE 16 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 16. Pseudotanais (P.) stiletto sp. nov., A, cheliped, B to G, pereopods 1 to 6 respectively; H, pleopod. Scale line = 0.1 mm.
FIGURE 8 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 8. Tanaissus microthymus sp. nov., paratype post-ovigerous female: A, right chela, inner face; B–F, pereopods 1–4 and 6 respectively; G, pleopod, only one plumose seta figured; H, uropod. Scale line = 0.25 mm A, H; 0.17 mm B–G.
FIGURE 10 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 10. Tanaissus microthymus sp. nov., allotype male: A, right antennule and antenna; B, right cheliped; C, left chela, inner face; D–E, detail of fixed finger, latter excluding setae for clarity; paratype male: F, antennule. Scale line = 0.5 mm B, C; 0.25 mm A, D–F.
FIGURE 7 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 7. Tanaissus microthymus sp. nov., holotype non-ovigerous female: A, habitus; B, rostrum; C, pleonites 5–6 and pleotelson; paratype post-ovigerous female: D, antennule; E, antenna; F, labrum; G, labium; H–I left and right mandibles respectively; J, maxillule endite; K, maxilliped palp articles 2–4; L, right cheliped; M, right chela from another paratype. Scale line = 1 mm A; 0.5mm B–C; 0.28 mm D–E, L–M; 0.18 mm F–K.
FIGURE 4 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 4. Akanthophoreus nanopsenos sp. nov., male: A, allotype, dorsal; B, antennule; C, antenna; D, left cheliped; E, right chela, inner face; F, pereopod 1; G, pereopod 4; H, pereopod 6; I, pleopod; J, uropod. Scale line = 0.3 mm for A; 0.1 mm for B to J.
FIGURE 3 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 3. Akanthophoreus nanopsenos sp. nov., female: A, holotype, dorsal; B, antennule; C, antenna; D, labium; E, left mandible; F, maxillule; G; labrum; H, maxilliped; I, pleotelson and left uropod; J, pleopod; K, cheliped; L, pereopod 1; M, pereopod 2; N, pereopod 4; O, pereopod 6. Scale line = 0.6 mm for A; 0.1 mm for B, C and I to O; 0.05 mm for D to H.
FIGURE 6 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 6. Typhlotanais angstromensis sp. nov., A, cheliped; B, pereopod 1; C, pereopod 3; D, pereopod 4; E, pereopod 6; F, pleopod; G, uropod. Scale line = 0.1 mm.
FIGURE 2 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 2. Leviapseudes sp. indet., subadult: A, habitus, dorsal; B, antenna; C, left mandible; D, maxillule; E. labium; F, first pereopod. Scale line = 1 mm for A; 0.2 mm for B, F; 0.1 mm for C to E.
FIGURE 1 in Tanaidaceans (Crustacea: Malacostraca: Peracarida) from soft-sediment habitats off Israel, Eastern Mediterranean
FIGURE 1. Map of the survey area showing sampling areas and marine National Monitoring stations (prefixed H: for other abbreviations, see Material and Methods).
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