High-arctic meromictic lake a

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Web1 de jun. de 2002 · Lake A is a salinity-stratified, ice-capped lake located in a polar desert catchment on northern Ellesmere Island, Nunavut, Canada that has been the site of … Weband four meromictic lakes (Lakes A, C1, C2, C3) were sam-pled on the northern coast of Ellesmere Island. Additional measurements were obtained at meromictic Romulus Lake further to the south on Ellesmere Island near Eureka, and at Char Lake, a freshwater lake in Resolute Bay on Cornwallis Island. The mean annual air temperatures at these sites ...

Vertical structure of archaeal communities and the ... - PubMed

WebA meromictic lake is a lake which has layers of water that do not intermix. [1] In ordinary, holomictic lakes, at least once each year, there is a physical mixing of the surface and the deep waters. [2] The term meromictic was coined by the Austrian Ingo Findenegg in 1935, apparently based on the older word holomictic. Web16 de fev. de 2024 · Isolated and highly stratified, the extreme geochemical and environmental features of meromictic ice-capped Lake A, in the Canadian High Arctic, … dickes 11 vs 13 shorts

Pyrosequencing analysis of the protist communities in a High …

WebThe geochemical processes occurring within meromictic Lake A (maxdepth 120 m) on northern Ellesmere Island, Canada, were investigated to determinethe history of the lake and to provide a baseline for future studies. The lake contained seawaterdiluted by freshwater input that had been mixed prior to the lake's isolation from tidalaction. WebLake A, located at an elevation of ~ 4 m above sea level, has a surface area of 4.9 km2, a water volume of 98.1 x 106 m3, a maximum known PERFLUORINATED CHEMICALS IN … Webal high arctic, meromictic lakes were discovered by Hattersley-Smith et al. (1970), and again, the deeper water (monimolimnion) was considered to be old sea * This is the … dicke safety be36

Genomic evidence of functional diversity in DPANN archaea

Bacterial dominance of phototrophic communities in a High Arctic lake ...

Web28 de ago. de 2012 · Here we sampled Lake A, a deep meromictic lake at latitude 83°N in High Arctic Canada. Sampling was before (May) and after (August) an unusual ice-out event during the warm 2008 summer. Web19 de set. de 2012 · Arctic Perfluorinated chemicals (PFCs) have been recorded in many types of marine and freshwater ecosystems. The aim of the present study was to examine meromictic lakes and their catchments on the far northern coast of Ellesmere Island, Nunavut, Canada, and to evaluate the results in the context of climate change. dickery wroclawWeb13 de mai. de 2024 · Lake A, on the far northern coast of Ellesmere Island in the Canadian High Arctic, is a meromictic lake that has received much limnological attention since its … dicke safety supply

"Web1 de nov. de 2009 · Lake A is located along the northern coast of Ellesmere Island in Quttinirpaaq National Park (83°00′ N, 75°30′ W; Fig. 1 ). It lies approximately 4 m above sea level, with a maximum known depth of 128 m, a surface area of 4.9 km 2, and a catchment of 37 km 2 ( Jeffries et al., 1984, Van Hove et al., 2006 ). Lake A is perennially ice-covered. " - High-arctic meromictic lake a

High-arctic meromictic lake a

Physico-chemical characteristics and origin of hypersaline meromictic …

WebThe geochemical processes occurring within meromictic Lake A (max depth 120 m) on northern Ellesmere Island, Canada, were investigated to determine the history of the lake and to provide a baseline for future studies. The lake contained seawater diluted by freshwater input that had been mixed prior to the lake’s isolation from tidal action. WebAbstract. Five important features appear in rough order from the surface downwards in physical and chemical profiles from high arctic coastal meromictic lakes. These features …

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Web31 de ago. de 2024 · This study investigated the diversity of microbial communities in the water column of subarctic Lake Svetloe, belonging to a rare type of freshwater sulfate-poor meromictic basins with high... Web2 de mar. de 2009 · Meromictic (permanently stratified) lakes are found in both the north and south polar regions, and are characterized by vertical gradients in their physical and chemical properties ( Priscu, 1997; Van Hove et al ., 2006 ), providing diverse potential habitats for microbial growth and niche differentiation.

Web1 de jun. de 2015 · We applied high-throughput sequencing of the V9 region (18S rRNA gene) to provide a hitherto unique spatiotemporal analysis of protistan diversity along the oxygen gradient of a freshwater meromictic lake (Lake Alatsee, SW Germany). In the mixolimnion, the… View on PubMed doi.org Save to Library Create Alert Cite Figures … WebThe Lake C2 series is the first non-ice cap, high resolution late-Holocene environmental record from the Canadian high arctic. The composite varve series compares favorably …

WebHigh Arctic meromictic lakes are extreme environments characterized by cold temperatures, ... (2012) Pyrosequencing analysis of the protist communities in a High Arctic meromictic lake: DNA preservation and change. Front. Microbio. 3:422. doi: 10.3389/fmicb.2012.00422. Received: 14 August 2012; Accepted: 24 November 2012; … Web20 de jan. de 2024 · We examined the hydroclimatic signal in a record of annual lamina (varve) thickness from High Arctic Lake A, Ellesmere Island (83°00.00′N, 75°30.00′W). …

WebVertical structure of archaeal communities and the distribution of ammonia monooxygenase A gene variants in two meromictic High Arctic lakes Jérémie Pouliot,1 Pierre E. Galand,1,2 Connie Lovejoy1 and Warwick F. Vincent3* 1Département de Biologie and Québec-Océan, Université Laval, Québec, QC G1V 0A6, Canada.

Web30 de set. de 2015 · A meromictic lake has an upper mixolimnion (a stratum where mixing by wind occurs), a lower monimolimnion (the more dense stratum that is not mixed by … citizens bank opera house boston locationWeb20 de jan. de 2024 · The extreme geochemical and environmental conditions in meromictic ice-capped Lake A, in the Canadian High Arctic, provided an isolated, stratified model … dicke safety products v1000WebJeg er miljøleder og for tiden i tillegg fungerende Sikkerhets- og kvalitetsleder i ett større utbyggingsprosjekt hos Bane NOR, og har over 12 års erfaring innen miljøovervåking og prosjektledelse. De siste årene har jeg hatt ansvaret for miljø-overvåking både innen Vannområder og samferdsel som utbygging av vei og jernbane. Foruten … dickes armbandWeb19 de set. de 2012 · Our analyses revealed the presence of several PFCs in catchment snowpack, inflowing streams, lake water, and the aquatic food web of Lake A (83˚00 ʹ N, … dickes auge babyWebGarrow Lake (75° 23′ N; 96° 50′ W), located 3 km from the southern tip of Little Cornwallis Island and 6.7 m above mean sea level, is a meromictic ecto-creno-cryogenic lake with an area of 418 ha and a maximum water depth of 49 m. The thermal stratification of this lake is mesothermic (heliothermic). dickes babyWeb× Close. The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. dicke safety productsWeb13 de mai. de 2024 · We sampled a highly stratified meromictic lake near the northern limit of the Canadian High Arctic, a region in rapid transition due to climate change. We … citizens bank opera house boston ma seating