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Letteratura scientifica selezionata sul tema "Ostracoda, Fossil Geographical distribution"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 7 febbraio 2022

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Articoli di riviste sul tema "Ostracoda, Fossil Geographical distribution"

Hong, Yuanyuan, Moriaki Yasuhara, Hokuto Iwatani e Briony Mamo. "Baseline for ostracod-based northwestern Pacific and Indo-Pacific shallow-marine paleoenvironmental reconstructions: ecological modeling of species distributions". Biogeosciences 16, n. 2 (1 febbraio 2019): 585–604. http://dx.doi.org/10.5194/bg-16-585-2019.

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Abstract. Fossil ostracods have been widely used for Quaternary paleoenvironmental reconstructions, especially in marginal marine environments (e.g., for water depth, temperature, salinity, oxygen levels, pollution). But our knowledge of indicator species autoecology, the base of paleoenvironmental reconstructions, remains limited and commonly lacks robust statistical support and comprehensive comparison with environmental data. We analyzed marginal marine ostracod taxa at 52 sites in Hong Kong for which comprehensive environmental data are available. We applied linear regression models to reveal relationships between species distribution and environmental factors for 18 common taxa (mainly species, a few genera) in our Hong Kong dataset and identified indicator species of environmental parameters. For example, Sinocytheridea impressa, a widely distributed euryhaline species throughout the East and South China Sea and the Indo-Pacific, indicates eutrophication and bottom-water hypoxia. Neomonoceratina delicata, a widely known species from nearshore and estuarine environments in the East and South China Sea and the Indo-Pacific, indicates heavy metal pollution and increased turbidity. The 18 taxa used for this study are widely distributed geographically and divided into the following groups: widespread (throughout the northwestern Pacific and Indo-Pacific regions), temperate (South China Sea to Russia (Sea of Japan coast) and Japan), subtropical (Indo-Pacific to the East China Sea), tropical (Indo-Pacific and South China Sea), and globally distributed. With statistical support from ecological modeling and comprehensive environmental data, these results provide a robust baseline for ostracod-based Quaternary–Anthropocene paleoenvironmental reconstructions in the tropical–extratropical northwestern Pacific and Indo-Pacific. Highlights. We provide a robust baseline for ostracod-based (microscopic Arthropods) paleoenvironmental reconstructions from Quaternary and Anthropocene marginal marine sediments. The studied species have wide distributions over the tropics and extratropics of the northwestern Pacific and Indo-Pacific. Ecological modeling has established ostracod species as reliable indicators for paleoenvironmental reconstructions.

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Cohuo, Sergio, Laura Macario-González, Sebastian Wagner, Katrin Naumann, Paula Echeverría-Galindo, Liseth Pérez, Jason Curtis, Mark Brenner e Antje Schwalb. "Influence of late Quaternary climate on the biogeography of Neotropical aquatic species as reflected by non-marine ostracodes". Biogeosciences 17, n. 1 (16 gennaio 2020): 145–61. http://dx.doi.org/10.5194/bg-17-145-2020.

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Abstract. We evaluated how ranges of four endemic and non-endemic aquatic ostracode species changed in response to long-term (glacial–interglacial cycles) and abrupt climate fluctuations during the last 155 kyr in the northern Neotropical region. We employed two complementary approaches, fossil records and species distribution models (SDMs). Fossil assemblages were obtained from sediment cores PI-1, PI-2, PI-6 and Petén-Itzá 22-VIII-99 from the Petén Itzá Scientific Drilling Project, Lake Petén Itzá, Guatemala. To obtain a spatially resolved pattern of (past) species distribution, a downscaling cascade is employed. SDMs were reconstructed for the last interglacial (∼120 ka), the last glacial maximum (∼22 ka) and the middle Holocene (∼6 ka). During glacial and interglacial cycles and marine isotope stages (MISs), modelled paleo-distributions and paleo-records show the nearly continuous presence of endemic and non-endemic species in the region, suggesting negligible effects of long-term climate variations on aquatic niche stability. During periods of abrupt ecological disruption such as Heinrich Stadial 1 (HS1), endemic species were resilient, remaining within their current areas of distribution. Non-endemic species, however, proved to be more sensitive. Modelled paleo-distributions suggest that the geographic range of non-endemic species changed, moving southward into Central America. Due to the uncertainties involved in the downscaling from the global numerical to the highly resolved regional geospatial statistical modelling, results can be seen as a benchmark for future studies using similar approaches. Given relatively moderate temperature decreases in Lake Petén Itzá waters (∼5 ∘C) and the persistence of some aquatic ecosystems even during periods of severe drying in HS1, our data suggest (1) the existence of micro-refugia and/or (2) continuous interaction between central metapopulations and surrounding populations, enabling aquatic taxa to survive climate fluctuations in the northern Neotropical region.

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PINTO, IRAJÁ DAMIANI. "The Fossil Blattoid Genus Amozonina. Taxonomy and Geographical Distribution". Pesquisas em Geociências 18, n. 1 (30 giugno 1991): 88. http://dx.doi.org/10.22456/1807-9806.21370.

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É descrito um novo blatóide fóssil (Insecta) Amazonina purperae Pinto, sp. nov., do Estado de Minas Gerais, encontrado em argilito arrocheado associado a uma tafoflora atribuída ao Pleistoceno. O material é proveniente do km 30,25 da Rodovia BR-262, Belo Horizonte – Uberaba. A amostra contém um único élitro. Trata-se do primeiro blatídeo fóssil de Amazonina, Hebard, 1929, gênero de ampla distribuição na América do Sul e América Central. O élitro apresenta extraordinária semelhança com os élitros de Amazonina rehni Albuquerque, 1964, dos quais se diferencia pelo número de ramos e pela bifurcação mais proximal do ramo posterior de R. Outrossim, A. rehni apresenta uma bifurcação distal de M que não existe na nova espécie.

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SATO, TOMOMI, e TAKAHIRO KAMIYA. "Taxonomy and geographical distribution of recent Xestoleberis species (Cytheroidea, Ostracoda, Crustacea) from Japan". Paleontological Research 11, n. 2 (giugno 2007): 183–227. http://dx.doi.org/10.2517/1342-8144(2007)11[183:tagdor]2.0.co;2.

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Pan, Y. R., e N. G. Jablonski. "The age and geographical distribution of fossil cercopithecids in China". Human Evolution 2, n. 1 (febbraio 1987): 59–69. http://dx.doi.org/10.1007/bf02436531.

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Antonietto, Lucas S., Lisa E. Park Boush, Celina A. Suarez, Andrew R. C. Milner e James I. Kirkland. "The ‘Last Hurrah of the Reigning Darwinulocopines’? Ostracoda (Arthropoda, Crustacea) from the Lower Jurassic Moenave Formation, Arizona and Utah, USA". Journal of Paleontology 92, n. 4 (26 aprile 2018): 648–60. http://dx.doi.org/10.1017/jpa.2017.150.

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AbstractAn ostracode fauna is described from lacustrine sediments of the Hettangian, Lower Jurassic, Whitmore Point Member of the Moenave Formation. The Moenave is well known for its rich, Late Triassic?–Early Jurassic fossil record, which includes fossil fishes, stromatolites, ostracodes, spinicaudatans, and a diverse ichnofauna of invertebrates and vertebrates. Four ostracode species, all belonging to the suborder Darwinulocopina, were recovered from these sediments:Suchonellina globosa,S. stricta,Whipplella? sp. 1, andW.? sp. 2. The diversity and composition of the Whitmore Point Member ostracode fauna agree with previous interpretations about Lake Dixie and nearby paleoenvironments as shallow lakes inhabited by darwinulocopine species that survived the effects of the Central Atlantic Magmatic Province and the subsequent end-Triassic extinction and quickly recolonized these areas, thanks to asexual reproduction by parthenogenesis. The Lake Dixie region, in its geographical isolation, could represent the last episode of darwinulocopine dominance in nonmarine environments before the Late Jurassic diversification of the cypridocopine/cytherocopine modern ostracodes.

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Wani, Ryoji. "Geological duration of ammonoids controlled their geographical range of fossil distribution". PeerJ 5 (28 novembre 2017): e4108. http://dx.doi.org/10.7717/peerj.4108.

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The latitudinal distributions in Devonian–Cretaceous ammonoids were analyzed at the genus level, and were compared with the hatchling sizes (i.e., ammonitella diameters) and the geological durations. The results show that (1) length of temporal ranges of ammonoids effected broader ranges of fossil distribution and paleobiogeography of ammonoids, and (2) the hatchling size was not related to the geographical range of fossil distribution of ammonoids. Reducing the influence of geological duration in this analysis implies that hatchling size was one of the controlling factors that determined the distribution of ammonoid habitats at any given period in time: ammonoids with smaller hatchling sizes tended to have broader ammonoid habitat ranges. These relationships were somewhat blurred in the Devonian, Carboniferous, Triassic, and Jurassic, which is possibly due to (1) the course of development of a reproductive strategy with smaller hatchling sizes in the Devonian and (2) the high origination rates after the mass extinction events.

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Hayashi, Ryota. "A checklist of turtle and whale barnacles (Cirripedia: Thoracica: Coronuloidea)". Journal of the Marine Biological Association of the United Kingdom 93, n. 1 (10 agosto 2012): 143–82. http://dx.doi.org/10.1017/s0025315412000847.

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A checklist of published records of coronuloid barnacles (Cirripedia: Thoracica: Coronuloidea) attached to marine vertebrates is presented, with 44 species (including 15 fossil species) belonging to 14 genera (including 3 fossil genera) and 3 families recorded. Also included is information on their geographical distribution and the hosts with which they occur.

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TAN, JING J., DONG REN e CHUNG K. SHIH. "First record of fossil Priacma (Coleoptera: Archostemata: Cupedidae) from the Jehol Biota of western Liaoning, China". Zootaxa 1326, n. 1 (2 ottobre 2006): 55. http://dx.doi.org/10.11646/zootaxa.1326.1.6.

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Four new fossil species of the genus Priacma, P. latidentata sp. nov., P. tuberculosa sp. nov., P. clavata sp. nov. and P. renaria sp. nov., are described from the Yixian Formation of western Liaoning, China. This finding documents the first record of fossil Priacma in China and extends the geographical distribution of this genus.

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Dykan, N. І. "Stratigraphy of the Pliocene deposits of the Black Sea (Ukraine) according to evidence from ostracods (Arthropoda, Crustacea)". Journal of Geology, Geography and Geoecology 28, n. 2 (3 luglio 2019): 250–61. http://dx.doi.org/10.15421/111926.

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This article presents a detailed analysis of the taxonomic composition of the Pliocene (Kimmerian, Kujalnikian) and Eopleistocene (Gurian) ostracods in the northern part of the Black Sea. It presents the patterns of the stratigraphic position of the fossil ostracods in the Miocene - Quaternary and their geographic distribution in Western and Eastern Europe (the Pannonian Basin, the Dacian Basin, the Euxinian basin of the Paratethys) and the Mediterranean region.Wedetermined the characteristic species for the Kimmerian, Kujalnikian and Gurian in the northern part of the Black Sea. We established a change in the taxonomic composition of ostracods at the Pliocene (Kujalnikian)/Eopleistocene (Gurian) boundary, namely the disappearance of a large number of Pliocene species and the appearance of new species. Ten species disappeared in the Kujalnikian Cyprideis pontica, Euxinocythere (M.) crebra, Amnicythere mironovi, Camptocypria lobata, Loxoconcha subcrassula, Loxoconcha verticalitercostata, Xestoleberis (X.) cellulocus, Xestoleberis (P.) communis, Candona (C.) expressa, Ilyocypris caspiensis; one species Amnicythere postbissinuata appeared in the Gurian. The brackish water species Cyprideis pontica is the Kujalnikian index species. The stratigraphic position of Cyprideis pontica in the Mediterranean Basin, Pannonian Basin, Dacian Basin, Euxinian Basin (Black Sea) in the Miocene-Quaternary is analyzed. The time of the disappearance of Cyprideis pontica in the Mediterranean, Pannonian and Dacian basins (Messinian, Pontian/Zanclean, Dacian, Kimmerian boundary) and in the Black Sea (Kujalnikian/Gurian boundary) is established. The diagnostic morphological features of the shell Cyprideis pontica (morphology of the surface pore canals) are established and described, which allows us to place this species in the Neogene deposits. Surface pore canals are different shape, sievetyped, deepened in relation to the surface of the valve. Sieve-shaped lamella contains 110-270 internal pores. The internal pores have a staggered shape, the diameter of the osculum of the internal pore is 302-994 nm; diameter of the central pore is 977 nm-1.8 μm). The evolution of Cyprideis pontica, which was separated from the parent species Cyprideis torosa in the Late Miocene, was reconstructed. In the occupation of a new ecological niche with a reduced oxygen content in deeper water biotopes, in the process of adapting to the conditions of hypoxia and necessity of increasing the volume of water filtration, there was a restructuring of the morphology of the surface pore canals of the shell Cyprideis torosa. This involved an increase in the size of the sieve-shaped lamella, the number of internal pores in the sieve-shaped lamella and the size of the osculum of the inner pore. A new morphotype Cyprideis pontica was thus formed within the existing Parathetys-Mediterranean basins. It had a mosaic, ecologically isolated range that coincided geographically or overlapped with the range of the species Cyprideis torosa (sympatric evolutionary speciation). The range of Cyprideis pontica and the dynamics of its populations in the Euxinian Basin during the Sarmatian-Kujalnikian have been reconstructed.

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Tesi sul tema "Ostracoda, Fossil Geographical distribution"

Conway-Physick, Jessica Ann. "The holocene ostracods of the Agulhas Bank, South Africa : their classification, distribution and ecology". Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/17467.

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Bibliography: pages 69-77.
An analysis of the Holocene ostracod fauna of the Agulhas Bank has been carried out on seventy-three surficial sediment samples. Sixty-six species of Ostracoda have been recorded, of which fifty-nine species are accounted for in forty genera and the remaining seven species are of indeterminate classification. The species are described and their distribution and ecology is given. An. analysis of the sedimentology, as well as an oceanographic analysis of the bottom water on the Agulhas Bank, has provided environmental parameters for each sediment sample location, enabling relationships to be described between ostracod faunas and environmental conditions. Quantitative factor analysis has been carried out on the twenty-four most abundant species, generating seven factor associations relating ostracod assemblages to a set of environmental parameters. The independent variables analyzed were the temperature, salinity and dissolved-oxygen content of the bottom water, as well as the sand content of the sediment. Contour maps of these variables have been drawn up using SADCO data for the oceanographic variables, and the sediment samples to calculate the sand content. The overall oceanography of the Agulhas Bank has been analyzed by relating the environmental parameters generated at each location to the water masses present on the shelf, and to the oceanic currents affecting them. Finally, the seven factor associations generated have been related directly to the substrate types, the water masses, and the currents present on the Agulhas Bank.

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De, Deckker P. (Patrick). "Australian Quaternary studies : a compilation of papers and documents submitted for the degree of Doctor of Science in the Faculty of Science, University of Adelaide". 2002. http://web4.library.adelaide.edu.au/theses/09SD/09sdd299.pdf.

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"April 2002" Includes bibliographical references and list of the publications and papers submitted. Pt. 1: section 1. Ostracod taxonomy and ecology -- section 2. Limnology of salt lakes -- section 3. Ostracod palaoecology - Quaternary environments -- section 4. Palaolimnology - Quaternary paleoenvironments and geology -- pt. 2: section 5. Geochemistry of ostracod shells -- section 6. Palaeoceanography Contains the majority of the author's scientific publications. Aims at reconstructing Quaternary paleoenvironments, mostly from the Australian region, using the fossil remains of organisms as well as new geochemical techniques.

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Welling, Leigh A. "Environmental control of radiolarian abundance in the Central Equatorial Pacific and implications for paleoceanographic reconstructions". Thesis, 1996. http://hdl.handle.net/1957/28239.

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Libri sul tema "Ostracoda, Fossil Geographical distribution"

Puckett, T. Markham. Systematics and paleobiogeography of brachycytherine Ostracoda. New York: Micropaleontology Press, American Museum of Natural History, 2002.

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Society, Micropalaeontological, e Geological Society of London, a cura di. Ostracods in British stratigraphy. London: published for the Micropalaeontological Society by the Geological Society, 2009.

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Witte, Leendert. Taxonomy and biogeography of West African beach ostracods. Amsterdam: North-Holland, 1993.

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Meisch, Claude. Liste annotée des Ostracodes actuels non-marins trouvés en France (Crustacea, Ostracoda). Luxembourg: Ministère des affaires culturelles, Musée national d'histoire naturelle, 1989.

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Jellinek, Thomas. Report on the taxonomy, biogeography, and phylogeny of mostly living benthic Ostracoda (Crustacea) from deep-sea samples (intermediate water depths) from the Challenger Plateau (Tasman Sea) and Campbell Plateau (Southern Ocean), New Zealand. Stuttgart: E. Schweizerbart'sche Verlagsbuchh., 2003.

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Purdue, James R. Dynamics of mammalian distribution in the Holocene of Illinois. A cura di Styles Bonnie Whatley 1950-. Springfield, Ill: Illinois State Museum, 1986.

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S, Kornicker Louis. Cylindroleberididae of the western North Atlantic and northern Gulf of Mexico and zoogeography of the Myodocopina (Ostracoda). City of Washington: Smithsonian Institution Press, 1986.

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Smith, Gerald Ray. Fishes of the Mio-Pliocene Ringold Formation, Washington: Pliocene capture of the Snake River by the Columbia River. Ann Arbor, Mich: Museum of Paleontology, the University of Michigan, 2000.

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Petuch, Edward J. Neogene history of tropical American mollusks: Biogeography & evolutionary patterns of tropical Western Atlantic Mollusca. Charlottesville, Va: Coastal Education & Research Foundation, 1988.

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Capitoli di libri sul tema "Ostracoda, Fossil Geographical distribution"

Stephenson, Steven L., Martin Schnittler e Yuri K. Novozhilov. "Myxomycete diversity and distribution from the fossil record to the present". In Protist Diversity and Geographical Distribution, 51–67. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-90-481-2801-3_5.

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"Life histories and distribution of ostracods with depth in western Lake Geneva (Petit-Lac), Switzerland: a reconnaissance study". In The Recent and Fossil meet Kempf Database Ostracoda, 199–227. BRILL, 2015. http://dx.doi.org/10.1163/9789004287600_011.

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"Appendix B Distribution of significant fossil non-marine ostracoda in the United States". In Developments in Palaeontology and Stratigraphy, 386–92. Elsevier, 1999. http://dx.doi.org/10.1016/s0920-5446(99)80006-5.

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Jellad, Tarek, Khaled Taouil e Zied Chtourou. "Power Management in Microgrids". In Handbook of Research on Novel Soft Computing Intelligent Algorithms, 141–64. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4450-2.ch005.

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Conventional power generation stations used to be centralized and located far from customers. The transport and distribution infrastructure incur power losses that are mainly due to cabling resistance. Distributed power generation resources located close to customers are sought as a solution to minimize transport power losses. They are also good alternatives in situations where connection to the grid is not possible due to geographical or economical reasons. Furthermore, the adoption of renewable energies as alternatives for the scarce fossil energy sources paves the way to more distributed energy production. These Distributed energy resources, when located in a limited region, can be interconnected with loads and eventually storages to form a microgrid. A microgrid can operate in off-grid, on-grid, or alternate between these modes while optimizing power quality and cost. Multi-Agent Systems (MAS) and Petri nets could be put into contribution for high level planning of energy exchanges within a microgrid. This strategy has been validated on the basis of a dynamic model for the simulation and optimization of power exchanges between different DERs.

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Atti di convegni sul tema "Ostracoda, Fossil Geographical distribution"

Nyborg, Torrey, Brant Nyborg, Hal Fairfield e Birgitta Jansen. "FOSSIL FISHES OF DEATH VALLEY NATIONAL PARK, CALIFORNIA: RECONSTRUCTING THE ORIGINS AND GEOGRAPHICAL DISTRIBUTION OF THE INDIGENOUS ICHTHYOFAUNA OF SOUTHEASTERN CALIFORNIA". In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-302235.

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van de Ketterij, R. G. "Emissions reduction at the Netherlands ministry of defence: potential, possibilities and impact". In 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.065.

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To limit the global temperature rise to 1.5°C in 2100 compared to mid nineteenth century, net post 2015 emissions should amount maximum 200 Gigaton Carbon (GTC) or 734 GT CO2 emissions [Millar, 2017]. Annual world CO2 emission rate was 36.2GT, and CO2_eq (the combined impact of all emissions on global warming, translated to the equivalent impact of CO2 emissions) emission rate was 49 GT in 2016, [Carbonatlas, 2017]. Currently only 685 GT CO2 emission quota is left, or 14 years of emitting at the current emission rate. Estimates vary widely: IPCC thinks we only have 485 GT CO2 emission quota left, while the most pessimistic estimates talk about only 200 GT CO2. With this in mind, the ambition of the Dutch Operational Energy Strategy [Schulten 2017] to reduce the dependency on fossil fuels (and hence CO2 emissions) by 20 % in 2030, is not sufficient to meet the objectives of the Treaty of Paris. We have to choose whether to keep this ambition, defining much stricter ambitions, or invest differently to keep global warming within acceptable limits. This paper discusses CO2 emissions and their distribution both over different sectors and geographical, worldwide. Next the paper discusses the options we have on short and medium term to reduce emissions, and their impact on emission reduction.

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Nemati Mehr, Seyyed Mahdi, e Hossein Afshin. "Numerical Simulation of NOx Pollutant Formation in a Natural Gas Fired Power Generation Boiler, by Using Burner’s Parameters". In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-85277.

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The major source of energy is fossil fuels, known as hydrocarbon containing C and H as the main elements. The heat generated from combustion of these fuels is used in power generation cycles to generate electricity. Main products of a hydrocarbon combustion reaction are water and carbon dioxide, but due to some reasons such as excessive temperature and inappropriate air-fuel mixing, always some pollutants are formed. One of the major concerns of recent years are NOx pollutants, which is mostly generated in the high temperature combustions. According to the geographical and economic issues, most countries are using coal as fuel and many researches have been conducted about pollutant formation and temperature distribution in coal fired boilers (H. Y. Park, et al,. J. R. Fan, et al, and many others), but in Middle Eastern countries, the dominant fuel for the power generation cycles is natural gas. In this paper, pollutant formation and temperature distribution is numerically studied in a power generation boiler using natural gas as fuel. NOx formation mechanisms are introduced and discussed about the main source of NOx pollutants in this boiler. The natural gas burners are appropriate for non-premixed flame, so the goal of this study is to achieve the desired temperature distribution and minimize NOx pollutants through the variation of inlet angle of fuel and air in the burner. A case study is presented for boiler with 156MW power, equipped with natural gas burners. Numerical simulation is applied for the mentioned system and optimization consideration on pollutant is discussed.

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