Academic literature on the topic 'Wintering grounds'

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Journal articles on the topic "Wintering grounds"

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Heide-Jørgensen, Mads Peter, Rune Dietz, Kristin L. Laidre, Pierre Richard, Jack Orr, and Hans Christian Schmidt. "The migratory behaviour of narwhals (Monodon monoceros)." Canadian Journal of Zoology 81, no. 8 (2003): 1298–305. http://dx.doi.org/10.1139/z03-117.

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Sixteen female narwhals (Monodon monoceros) were tracked by satellite in 2000 and 2001 from their summering ground near Somerset Island in the Canadian High Arctic to their wintering ground in central Baffin Bay. The wintering ground location was spatially discrete from another narwhal wintering ground in southern Baffin Bay. Area extent of the summering ground was approximately 9464 km2 and area extent of the wintering ground was 25 846 km2. Two of the narwhals were tracked for more than 12 consecutive months. These whales used three focal areas between their spring and autumn migration: a co
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Kashkarov, R. D., A. Ten, Yu O. Mitropolskaya, and V. Soldatov. "Changes In The Modern Range Of The Great Bustard Otis Tarda In Uzbekistan Under The Influence Of Agricultural Transformation Of Landscapes And Climate." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 16, no. 1 (2023): 140–49. http://dx.doi.org/10.24057/2071-9388-2022-091.

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Previously, there was no special study of the Great Bustard (Otis tarda) in Uzbekistan. The first Bustard survey was conducted within the Winter Bustards Census Programme of the Eurasian Bustard Alliance in 2019. The discovery of a Great Bustards aggregation of 96 individuals in Jizzakh region showed that the wintering grounds are more stable than was expected before and that there is no information about the wintering grounds of this species in the country. The aim of this work was to find other wintering grounds, estimate the number of wintering Great Bustards and assess threats. The identif
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Wallace, B. M., and Danny B. Pence. "Population dynamics of the helminth community from migrating blue-winged teal: loss of helminths without replacement on the wintering grounds." Canadian Journal of Zoology 64, no. 8 (1986): 1765–73. http://dx.doi.org/10.1139/z86-266.

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The main and interactive effects of host and seasonal factors on abundance of 22 common helminth species from fall and spring migratory blue-winged teal collected in the Texas Panhandle were examined. Although abundances of many common helminth species were greater in immature than adult birds just off the breeding grounds, fall-collected adults had higher abundances of most helminth species than did both juvenile and adult birds from the wintering grounds in Mexico. While total abundance of helminths declined on the wintering grounds to only 54% of that from fall-collected birds, overall spec
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Wang, Chunxiao, Xiubo Yu, Shaoxia Xia, Yu Liu, Junlong Huang, and Wei Zhao. "Potential Habitats and Their Conservation Status for Swan Geese (Anser cygnoides) along the East Asian Flyway." Remote Sensing 14, no. 8 (2022): 1899. http://dx.doi.org/10.3390/rs14081899.

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Habitats provide essential space for migratory birds to survive and reproduce. Identifying potential habitats in annual cycle stages and their influencing factors is indispensable for conservation along the flyway. In this study, we obtained satellite tracking of eight swan geese (Anser cygnoides) wintering at Poyang Lake (28°57′4.2″, 116°21′53.36″) from 2019 to 2020. Using the Maximum Entropy species distribution model, we investigated the potential habitats distribution of the swan geese during their migration cycle. We analyzed the relative contribution of various environmental factors to h
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Ockendon, Nancy, Dave Leech, and James W. Pearce-Higgins. "Climatic effects on breeding grounds are more important drivers of breeding phenology in migrant birds than carry-over effects from wintering grounds." Biology Letters 9, no. 6 (2013): 20130669. http://dx.doi.org/10.1098/rsbl.2013.0669.

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Long-distance migrants may be particularly vulnerable to climate change on both wintering and breeding grounds. However, the relative importance of climatic variables at different stages of the annual cycle is poorly understood, even in well-studied Palaearctic migrant species. Using a national dataset spanning 46 years, we investigate the impact of wintering ground precipitation and breeding ground temperature on breeding phenology and clutch size of 19 UK migrants. Although both spring temperature and arid zone precipitation were significantly correlated with laying date, the former accounte
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Švažas, Saulius, Aniolas Sruoga, Algimantas Paulauskas, and Dalius Butkauskas. "Population structure among breeding and wintering Long-tailed Ducks Clangula hyemalis in the Western Palearctic." Ornis Svecica 15, no. 4 (2005): 206–11. http://dx.doi.org/10.34080/os.v15.22732.

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We used gel electrophoresis of common proteins and alloenzymes to study genetic variability among Long-tailed Ducks breeding in the northeast European tundra and wintering in the Baltic Sea. The observed genetic variability in the studied breeding population was lower than in birds sampled on winter ground in the Baltic. We found a similar genetic structure among the breeding birds and certain samples from wintering grounds in the Baltic Sea. The wintering birds showed evidence of genetic structure between years, possibly resulting from winter movements of different subpopulations of Long-tail
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Mel’nikov, Yuriy. "Winter bird fauna of the Baikal region: A new approach to the analysis of materials." BIO Web of Conferences 160 (2025): 02032. https://doi.org/10.1051/bioconf/202516002032.

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Based on the materials of long-term studies (1964-2024), modern changes in the composition of the bird fauna of the Baikal region in winter are shown. A clear trend towards a decrease in the abundance of birds over a wide area has been revealed. At the same time, their species composition has increased significantly. It is proved that the main reason for such changes is a strong warming of the climate – 1.9 ° C/100 years. The process of formation of “cold” wintering grounds in new species cannot be explained without a detailed study of their late autumn flight. It is shown that such wintering
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Ma, Zhijun, Zijian Wang, and Hongxiao Tang. "History of Red-crowned Crane Grus japonensis and its habitats in China." Bird Conservation International 8, no. 1 (1998): 11–18. http://dx.doi.org/10.1017/s0959270900003592.

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SummaryThe historical distribution of the Red-crowned Crane Grus japonensis together changes in its breeding and wintering grounds in China are reviewed. According to historical information the bird mainly bred in Heilongjiang and Jilin Provinces and wintered at coastal regions near the Yangtze estuary. Due to geographical and anthropological changes, the breeding grounds gradually moved to the west and south while the wintering grounds moved northward. Efforts have been made to protect this endangered species but factors still exist which restrict further development of the population.
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Esler, Daniel, and Jeanine C. Bond. "Cross-seasonal dynamics in body mass of male Harlequin Ducks: a strategy for meeting costs of reproduction." Canadian Journal of Zoology 88, no. 2 (2010): 224–30. http://dx.doi.org/10.1139/z09-135.

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Considerations of acquisition of energy for reproduction by waterfowl have disproportionately focused on females, although males also require energy for reproduction. We quantified variation in body mass of male Harlequin Ducks ( Histrionicus histrionicus (L., 1758)) on coastal wintering areas prior to spring migration, as well as on breeding grounds, to determine when and where nutrients were acquired to meet costs of reproduction. Male mass on wintering grounds increased, on average, by 45 g (7%) in the weeks prior to migration. On breeding streams, we inferred that body mass of paired males
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Voelker, Gary. "Molt of the Gray Vireo." Condor 102, no. 3 (2000): 610–18. http://dx.doi.org/10.1093/condor/102.3.610.

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AbstractUsing museum specimens, I document the molt cycles and molting grounds of the Gray Vireo (Vireo vicinior). During prebasic molts, adult female Gray Vireos replace their primaries in 57 days, whereas adult males take 70 days; all body plumage is replaced during this molt. Prebasic molts occur almost exclusively on the breeding grounds; just 3 of 41 specimens replacing primaries were collected away from breeding grounds. No molting specimens were collected from wintering areas. Prealternate molt occurs on the wintering grounds, and appears limited to the replacement of innermost secondar
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Dissertations / Theses on the topic "Wintering grounds"

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Bakermans, Marja Henni. "Demography and Habitat Use of Cerulean Warblers on Breeding and Wintering Grounds." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211916371.

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Canavelli, Sonia Beatriz. "Abundance, movement and habitat use of Swainson's hawks in their wintering grounds, Argentina." [Florida] : State University System of Florida, 2000. http://etd.fcla.edu/etd/uf/2000/ana6132/etd.PDF.

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Thesis (M.S.)--University of Florida, 2000.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 119 p.; also contains graphics. Vita. Includes bibliographical references (p. 108-118).
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Deakos, Mark H. "Humpback Whale (Megaptera novaeangliae) Communication: The Context and Potential Functions of Pec-Slapping Behavior on the Hawaiian Wintering Grounds." Thesis, University of Hawaii at Manoa, 2002. http://hdl.handle.net/10125/7066.

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Humpback whales display a variety of percussive behaviors that may function as communication between conspecifics. Pectoral-fin slapping behavior is commonly observed in a variety of marine mammals including seals, dolphins, and humpback whales. Data from 5-years of behavioral observations of humpback whales on the Hawaiian wintering grounds were compiled and analyzed. Overall findings suggest pec-slapping behavior is dependent on the performer's age class, sex, and social role. Adult females appear to pec-slap in competition groups in efforts to encourage competition from surrounding males, i
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Eusebi, Bruno. "Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434993.

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The White-tailed eagle (H. albicilla) and the Steller's sea eagle (H. pelagicus) overwinter in the same region of Japan: North-western Hokkaido. To examine how and if these two species compete at their overwintering grounds the following questions were asked: are they evenly distributed over this region and do they compete over space and resources? For the period 2015-2019, I found that the two species were not evenly distributed over the region, and that H. pelagicus is the most common species and does occur over the whole area. At a more detailed study at Lake Abashiri performed in 2019-2020
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Zerda, Lerner Susana de la. "Winter habitat use by Blackburnian Warblers (Dendroica fusca) in Los Amarillos, Colombia." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-01102009-063245/.

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Reis, Bianca Raquel Correia dos. "Consequences of migratory choices and mercury accumulation in cory's shearwaters." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/21965.

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Mestrado em Biologia Marinha<br>The migratory decisions of Cory’s shearwaters (Calonectris borealis) potentially have an impact on individuals, producing carry-over effects, with implications for population structure and dynamics. The main goals in this study were to compare the distribution of a studied population of Cory’s Shearwaters, at Selvagem Grande, during the non-breeding period; investigate the influence of wintering ground on the date of arrival at the colony and body condition on arrival and how these factors could relate with reproductive success and see how these previously ment
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Boggie, Matthew Arthur. "Linking Diet, Behavior, and Bioenergetics of a Migratory Waterbird to Evaluate Response to Wintering Ground Conditions." Thesis, New Mexico State University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=11010180.

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<p> Rivers in semi-arid regions are highly sensitive and pressured yet can support diverse assemblages of species. In central New Mexico, the Rio Grande (River) is the lifeblood of the Middle Rio Grande Valley (MRGV), a semi-arid region which maintains large urban and agricultural centers and is also the principal wintering area for the Rocky Mountain Population of greater sandhill cranes (<i>Antigone canadensis tabida</i>). Human-induced environmental change has transformed the MRGV and habitat availability prompting concerns for the population. To address these concerns, I investigated dieta
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Hakala, Siri. "Behavioral choices of male humpback whales (Megaptera novaeangliae) on the Hawaiʻian wintering grounds". Thesis, 2004. http://hdl.handle.net/10125/11870.

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Books on the topic "Wintering grounds"

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Dickson, D. Lynne. Movement of king eiders from breeding grounds on Banks Island, NWT, to moulting and wintering areas. Canadian Wildlife Service, Prairie and Northern Region, 2012.

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The amazing monarch: The secret wintering grounds of an endangered butterfly. BenBella Books, 2010.

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Book chapters on the topic "Wintering grounds"

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Wessling, Bernhard. "Arrival in the Brook After Returning from Wintering Grounds: Alone or in Groups?" In The Call of the Cranes. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98283-6_4.

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Swartz, Steven L., Aimee Lang, Alexander Burdin, et al. "Gray Whale Sex, Reproductive Behavior, and Social Strategies." In Sex in Cetaceans. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-35651-3_21.

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AbstractGray whale sexual behavior and copulation are observed throughout their range. The most prominent period for reproductive behavior is during the southward migration from summer feeding areas to wintering areas where some breeding occurs and calves of the year are reared. The seasonal migrations of gray whales are believed to function, in part, to bring together individuals that are otherwise widely distributed during the period of estrus to facilitate mating and reproduction. Sexual behaviors and sexual strategies for this species appear to align closely with those of balaenid (not ror
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"Back to the Wintering Grounds:." In The Double-crested Cormorant. Yale University Press, 2014. http://dx.doi.org/10.2307/j.ctt5vm3rj.18.

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Kushlan, James A., and James A. Hancock. "Eastern Reef-Heron Egretta sacra." In Herons. Oxford University PressOxford, 2005. http://dx.doi.org/10.1093/oso/9780198549819.003.0031.

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Abstract The species is vulnerable (IUCN 2003). It was upgraded from Endangered in 1994 owing to the discovery of Korean and Chinese colonies and the Philippine wintering grounds. But with fewer than 3400 birds and its habitat under immediate threat, it truly remains a heron of great concern. It is protected or listed in Russia, South Korea, China including Taiwan. An immediate conservation action plan for this heron is needed. All major colony sites, their intertidal feeding sites, and important wintering sites need to be protected, but especially the sites in North and South Korea, China, an
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Rees, Eileen C., Pia Lievesley, Richard A. Pettifor, and Christopher Perrins. "Mate fidelity in swans: an interspecific comparison." In Partnerships in Birds. Oxford University PressOxford, 1996. http://dx.doi.org/10.1093/oso/9780198548614.003.0006.

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Abstract Of the three swan species that occur in Britain, the Bewick’s and Whooper Swans are migratory and the Mute Swan resident throughout the year. The Bewick’s Swan Cygnus columbianus bewickii (see drawing above) breeds on tundra in the Russian arctic, and birds from the western population fly some 4000 km each autumn to wintering sites located primarily in the Netherlands, Britain, and Ireland. British-wintering Whooper Swans Cygnus cygnus, on the other hand, are predominantly from the Icelandic breeding population, and have a comparatively short migratory journey of some 800 km between t
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"Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States." In Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States, edited by R. DEAN GRUBBS, JOHN A. MUSICK, CHRISTINA L. CONRATH, and JASON G. ROMINE. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569810.ch6.

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&lt;em&gt;Abstract.&lt;/em&gt;—Delineation of essential fish habitat for exploited populations is critical to proper management. Spatial delineation of summer nurseries for elasmobranchs has received increased attention in recent years; however, temporal patterns of nursery use and the delineation of wintering areas are as critical. The lower Chesapeake Bay is the largest summer nursery for sandbar sharks &lt;em&gt;Carcharhinus plumbeus &lt;/em&gt;in the western Atlantic. The goals of this study were to delineate temporally the use of the nursery and the migratory movements of juvenile sandbar
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Sutherland, William J. "Territories." In From Individual Behaviour to Population Ecology. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780198549116.003.0006.

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Abstract In the previous chapters it has been assumed that individuals are relatively free to move between patches. However, in many species this is clearly untrue as some individuals defend territories that exclude others. In this chapter, I will consider how territory defence influences the distribution of individuals and consider the consequences for density dependence. In some species territories may be defended by groups. Territorial behaviour is usually most pronounced in the breeding season and this is the situation I consider here. However the same approach can also be applied to terri
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Goss-Custard, John D., Sarah le V. dit Durell, Ralph T. Clarke, et al. "Population dynamics: predicting the consequences of habitat change at the continental scale." In The Oystercatcher. Oxford University PressOxford, 1996. http://dx.doi.org/10.1093/oso/9780198546474.003.0014.

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Abstract As the previous chapter discussed, Oystercarcher numbers breeding or wintering in one area may depend not only on factors operating in that area hut also on the supply of birds available to live there. This, in turn, depends on the attractiveness of the area relative to others and on processes occurring on the, often distant, wintering or breeding grounds and on migration. In such a species, population processes must be investigated at large spatial scales. But how large must the scale be before, in some meaningful sense, we can say that a population is being studied? Oystercatcher nu
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"Climate on Wintering Grounds Drives Spring Arrival of Short-­Distance Migrants to the Upper Midwest." In Phenological Synchrony and Bird Migration. CRC Press, 2015. http://dx.doi.org/10.1201/b18011-9.

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Ehrenfeld, David. "Scientific Discoveries and Nature’s Mysteries." In Swimming Lessons. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195148527.003.0031.

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One of the joys of science is its steady production of wonderful discoveries. At irregular but not intolerable intervals, it throws out to the waiting world findings that add spice to a thousand morning newspapers and enliven the conversations of countless barbers and taxi drivers. Some branches of science are especially fruitful in their production of wonders: physics doles out an inexhaustible supply of elemental particles with clever, memorable names like quark. Medicine provides powerful antibiotics freshly isolated from weird sources such as exotic muds and frogskin, arraying them against
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Conference papers on the topic "Wintering grounds"

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Grozea, Adrian, Melanca Lovrenschi, Violeta Igna, Ioana Grozea, and Silvia Patruica. "STUDY ON THE INFLUENCE OF WINTERING TEMPERATURE ON CERTAIN SEMEN CHARACTERISTICS IN STERLET (ACIPENSER RUTHENUS)." In SGEM International Multidisciplinary Scientific GeoConference. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/6.2/s24.15.

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Sterlet (Acipenser ruthenus) is a species with seasonal reproduction, temperature being considered one of the most important key factors that ensures the seasonal reproductive cycle. The wintering temperature should be carefully controlled to prevent any adverse effects on reproduction. In many fish species, the wintering at high temperatures have a negative impact on reproduction success. The aim of this study is to evaluate the impact of wintering temperature on sterlet males by evaluating the quantity and quality of the semen collected from them during the breeding season. Two groups of mal
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"Enhancing Nocturnal Habitat for the American Woodcock on Louisiana Wintering Grounds." In Eleventh American Woodcock Symposium. University of Minnesota Libraries Publishing, 2019. http://dx.doi.org/10.24926/aws.0119.

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Miki, Koki, Shigeru Tabeta, and Katsunori Mizuno. "Numerical Simulations for Impacts of Offshore Wind Power Facilities on Currents and Water Quality." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-78999.

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Abstract When selecting a suitable site for offshore wind farm, the impact on the marine environment is one of the most important issues. However, in most cases of the suitable sites selection, the distances from protected areas, spawning and wintering grounds of marine creatures are taken into account as environmental indicators, and there are few which explicitly consider the impact of the offshore windfarm on marine ecosystem including current field and water quality which could be affected by the construction of offshore power plants. In this study, the impacts of offshore wind farms on th
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