Academic literature on the topic 'Micromollusks'

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Journal articles on the topic "Micromollusks"

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Kunakh, O., A. Umerova, and E. Degtyarenko. "Spatial distribution of micromollusks under the impact of recreation." IOP Conference Series: Earth and Environmental Science 1049, no. 1 (2022): 012063. http://dx.doi.org/10.1088/1755-1315/1049/1/012063.

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Abstract Anthropogenic impacts lead to a decrease in the abundance and diversity of communities of living organisms. The rate of recovery of populations is inversely proportional to size: the smaller the size, the greater the potential for population recovery after negative impact. Therefore, under conditions of extremely high levels of anthropogenic impact, small-sized animals are a reliable source of ecosystem state. The aim of the work is to: 1) to evaluate rates of the micromollusc Vallonia pulchella (Müller, 1774) abundance in ecosystems that are subject to extremely high levels of recrea
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Claybourn, Thomas M., Sarah M. Jacquet, Christian B. Skovsted, Timothy P. Topper, Lars E. Holmer, and Glenn A. Brock. "Mollusks from the upper Shackleton Limestone (Cambrian Series 2), Central Transantarctic Mountains, East Antarctica." Journal of Paleontology 93, no. 3 (2019): 437–59. http://dx.doi.org/10.1017/jpa.2018.84.

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AbstractAn assemblage of Cambrian Series 2, Stages 3–4, conchiferan mollusks from the Shackleton Limestone, Transantarctic Mountains, East Antarctica, is formally described and illustrated. The fauna includes one bivalve, one macromollusk, and 10 micromollusks, including the first description of the speciesXinjispira simplexZhou and Xiao, 1984 outside North China. The new fauna shows some similarity to previously described micromollusks from lower Cambrian glacial erratics from the Antarctic Peninsula. The fauna, mainly composed of steinkerns, is relatively low diversity, but the presence of d
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Ballesteros, Manuel, Angra S. Silva, Óscar F. Villamizar, Miquel Pontes, and Francesc Oliva. "Biodiversity of Marine Mollusk Assemblages from Two Contrasted Algal Habitats in the Mediterranean Sea (Tossa de Mar, Costa Brava, NE Spain)." Diversity 17, no. 1 (2024): 9. https://doi.org/10.3390/d17010009.

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The malacological faunae of two algal habitats with different lighting conditions—a sciophilous wall and a photophilous one—both located in Tossa de Mar (Costa Brava, Girona, NE Spain), have been studied to examine the differences in the malacological communities, their distribution over time, and the role played by micromollusks in these algal habitats. Every two months, for a year, samples were collected via scuba diving and scraping standardized surfaces (20 × 20 cm) of the algal communities. In the laboratory, the samples were washed and filtered using two metal sieves (2 mm for coarse fra
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LIEW, THOR-SENG, REUBEN CLEMENTS, and MENNO SCHILTHUIZEN. "Sampling micromolluscs in tropical forests: one size does not fit all." Zoosymposia 1 (July 25, 2008): 271–80. http://dx.doi.org/10.11646/zoosymposia.1.1.16.

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Micromolluscs comprise a signifi cant proportion of terrestrial malacofaunas in the tropics. As such, inventories and ecological sampling protocols must endeavor to maximize the capture of micromolluscs. Sampling protocols (i.e., appropriate number of sampling plots) for micromolluscs, however, still require refi nement to improve sampling effectiveness. Apart from describing our recommended sampling protocols for micromolluscs, we compared completeness ratios (as a proxy for sampling effectiveness) and species densities and diversities across different vegetation types (i.e., limestone karst
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GEIGER, DANIEL L., and CHRISTINE E. THACKER. "Micrmolluscs in molecular systematics: Experiences and best practices." Zoosymposia 1 (July 25, 2008): 39–45. http://dx.doi.org/10.11646/zoosymposia.1.1.6.

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The use of molecular techniques is pervasive in contemporary systematics. We stress the importance of depositing voucher material, particularly for the less well-known micromolluscs, along with images from which specimens can be identifi ed. Appropriate storage is paramount to ensure long-term survival of those voucher specimens. We detail methods of animal extraction that retain the shell as a voucher specimen, and detail salvage of radula and operculum from DNA spin columns. DNA can be extracted from freshly collected micromolluscs, but most dry and wet material in museum collections is not
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GEIGER, DANIEL L. "Monographing micromolluscs: A case study on Scissurellidae s.l. (Vetigastropoda)." Zoosymposia 1 (July 25, 2008): 133–45. http://dx.doi.org/10.11646/zoosymposia.1.1.11.

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The last taxonomic monographs of micromolluscs (size less than 5 mm) of worldwide scope date back to the turn of the 19th/20th century, prior to the invention of the scanning electron microscope (SEM). In the present study, experiences from the preparation of a monograph on worldwide Scissurellidae s.l., a gastropod taxon comprising minute members plus an overview of this taxon, are provided. The literature is mercifully brief with some 650 references tracked, equal to approximately 4.6 references per species. Relying on secondary resources has proven to be problematic, and all primary taxonom
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Miquel, Sergio, Rina Ramírez, and Willibaldo Thomé. "Biodiversity and taxonomy of punctoid micromollusks from southern Brazil, with description of a new species of Radiodiscus from the «Mata Atlántica» (Atlantic Rain Forest) (Mollusca, Gastropoda, Pulmonata)." Revista del Museo Argentino de Ciencias Naturales 9 (2007): 205–30. http://dx.doi.org/10.22179/revmacn.9.308.

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JACQUET, SARAH M., THOMAS BROUGHAM, CHRISTIAN B. SKOVSTED, et al. "Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia." Geological Magazine 154, no. 5 (2016): 1088–104. http://dx.doi.org/10.1017/s0016756816000704.

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AbstractCorrelation of lower Cambrian strata is often confounded by provincialism of key fauna. The widespread occurrence of the micromollusc Watsonella crosbyi Grabau, 1900 is therefore an important biostratigraphic signpost with potential for international correlation of lower Cambrian successions. Previous correlations of W. crosbyi from Australia (Normanville Group) suggested an Atdabanian- to Botoman-equivalent age. However, in the upper part of the Mount Terrible Formation, stratigraphic ranges of W. crosbyi and Aldanella sp. cf. golubevi overlap prior to the incoming of vertically burro
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Qi, Lu, Biyang Xu, Lingfeng Kong, and Qi Li. "Checklist of the micromolluscs in the intertidal zone of the Yellow Sea and Bohai Sea, China." Biodiversity Data Journal 11 (July 7, 2023): e105444. https://doi.org/10.3897/BDJ.11.e105444.

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The diversity of the sedimentary environment and molluscs is rich in the intertidal zone of the Yellow Sea and Bohai Sea. At present, many of the investigations focus on macromolluscs, while the diversity of micromolluscs is seriously underestimated.In this study, the survey of micromolluscs was carried out in the intertidal zone of the Yellow Sea and Bohai Sea. The collection and preservation of micromolluscs, as well as the preparation methods of morphological characteristic structures by scanning electron microscopy (SEM) were explored. A total of 20 species were described in this survey. T
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Yorkina, Nadiia, Natalia Tarusova, Ava Umerova, Polina Telyuk, and Yevheniia Cherniak. "Spatial Organization of the Micromollusc Community under Recreational Load." Grassroots Journal of Natural Resources 4, no. 2 (2021): 1–22. http://dx.doi.org/10.33002/nr2581.6853.040201.

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The recreational load is an important factor in transforming the living conditions of living organisms in the urban environment. This article examines the role of recreation as a driver of the changing habitat of soil micromolluscs in the park environment in an urban landscape. The hypothesis that recreational exposure changes the hierarchical organization of the spatial distribution of the micromollusc community was tested. An experimental polygon was located in Novooleksandrivskiy Park (Melitopol, Ukraine) and represented 7 transects with 18 test points in each. The set of soil properties ex
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Book chapters on the topic "Micromollusks"

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Charó, M. P. "Quaternary Marine Mollusk Associations of the Last Interglacials in North Patagonia (Argentina): Paleoecology and Paleoclimates." In Update on Malacology. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.99221.

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Deposits of different Quaternary marine transgressions are largely exposed in the Argentine north Patagonian littoral (39°15′S–41°02′S), south of the Buenos Aires and north of Río Negro provinces. The malacological associations of 84 sites were studied. Among them, 31 belong to Pleistocene deposits of the interglacials ≥ MIS 9, MIS 7, MIS 5e, 29 to Holocene deposits of the interglacial MIS 1, and 24 sites of modern beaches. These sites yielded 7385 fossils among valves and shells, of 78 species (42 bivalves and 36 gastropods), including 11 micromolluskan species. The record of the bivalves Cra
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Conference papers on the topic "Micromollusks"

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Portell, Roger W., Harry G. Lee, Richard L. Edwards, and Ann Heatherington. "FLORIDA MARINE MICROMOLLUSKS FROM THE PINECREST BEDS, TAMIAMI FORMATION: HIGHER-LEVEL TAXA HITHERTO UNREPORTED THEREIN AND IN SUBSEQUENT WESTERN ATLANTIC PLIOCENE AND QUATERNARY FAUNAS." In 66th Annual GSA Southeastern Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017se-291303.

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