Comparison of the Enantiomer Distribution of Chiral Organochlorine Contaminants in Captive West Greenland Sled Dogs and Polar Bears from Baffin Bay

2011 ◽  
pp. 45-63 ◽  
Author(s):  
Matthew S. Ross ◽  
Robert J. Letcher ◽  
Melissa A. McKinney ◽  
Christian Sonne ◽  
Rune Dietz ◽  
...  
Keyword(s):  
Polar Bears ◽  
Baffin Bay ◽  
West Greenland ◽  
Sled Dogs ◽  
Organochlorine Contaminants

MARINE MACROPLANKTON FROM THE CANADIAN EASTERN ARCTIC: I. AMPHIPODA AND SCHIZOPODA

1942 ◽  
Vol 20d (1) ◽  
pp. 33-46 ◽  
Author(s):  
M. J. Dunbar
Keyword(s):  
High Arctic ◽  
Atlantic Water ◽  
Amphipod Species ◽  
Hydrographic Data ◽  
Baffin Bay ◽  
West Greenland ◽  
The Difference ◽  
Two Sides ◽  
A New Species ◽  
Polar Water

Twenty-four amphipod species (one a new species), three euphausiids, and two mysids are recorded from the coastal water of the Canadian eastern Arctic. Most of the records are new.The list is representative of a high arctic plankton, giving no evidence of the intrusion of Atlantic water. This is in agreement with the hydrographic observations made, and with available hydrographic data from other sources.The plankton is contrasted with that found in 1936 in Disko Bay, west Greenland, where there appears to be an upwelling of mixed Arctic and Atlantic water. The difference between the plankton of the two sides of Baffin Bay suggests the possibility of distinguishing water of Lancaster Sound (Canadian polar water) from that of west Greenland by means of their planktonic fauna.

Organochlorine contaminants in seven species of Arctic seabirds from northern Baffin Bay

2004 ◽  
Vol 128 (3) ◽  
pp. 327-338 ◽  
Author(s):  
Andrea H. Buckman ◽  
Ross J. Norstrom ◽  
Keith A. Hobson ◽  
Nina J. Karnovsky ◽  
Jason Duffe ◽  
...  
Keyword(s):  
Baffin Bay ◽  
Organochlorine Contaminants ◽  
Arctic Seabirds

Identifying shifts in maternity den phenology and habitat characteristics of polar bears (Ursus maritimus) in Baffin Bay and Kane Basin

Polar Biology ◽  
2017 ◽  
Vol 41 (1) ◽  
pp. 87-100 ◽  
Author(s):  
Erica Escajeda ◽  
Kristin L. Laidre ◽  
Erik W. Born ◽  
Øystein Wiig ◽  
Stephen Atkinson ◽  
...  
Keyword(s):  
Ursus Maritimus ◽  
Habitat Characteristics ◽  
Polar Bears ◽  
Baffin Bay

scholarly journals Population size and yield of Baffin Bay beluga (Delphinapterus leucas) stocks

2002 ◽  
Vol 4 ◽  
pp. 225 ◽  
Author(s):  
Stuart Innes ◽  
Robert EA Stewart
Keyword(s):  
Population Biology ◽  
Maximum Sustainable Yield ◽  
Production Model ◽  
Delphinapterus Leucas ◽  
Sufficient Information ◽  
Stock Size ◽  
Baffin Bay ◽  
West Greenland ◽  
The North ◽  
North Water

A surplus production model within a Sampling, Importance Resampling (SIR) Bayesian analysis was used to estimate stock sizes and yields of Baffin Bay belugas. The catch of belugas in West Greenland increased in 1968 and has remained well above sustainable rates. SIR analysis indicated a decline of about 50% between 1981 and 1994, with a credibility interval that included a previous estimate of 62%. The estimated stock sizes of belugas wintering off West Greenland in 1998 and 1999 were approximately 5,100 and 4,100 respectively and were not significantly different than an estimate based on aerial surveys combined for both years. Projected to 1999 this stock can sustain median landings of 109 whales with a total kill of about 155, based on posterior estimates of struck and lost plus under-reporting. The declining stock size index series did not provide sufficient information to estimate the potential maximum rate of population growth, the number of whales struck and lost, or the shape of the production curve with precision. Estimating these parameters requires an index time series with a marked step change in catch or a series with increasing stock sizes. The stock size estimate for the belugas wintering in the North Water in 1999 was approximately 14,800 but there is no information about the population biology of these whales. The estimated maximum sustainable yield (landed) for the North Water stock was 317 belugas.

scholarly journals Explanatory notes to the Geological map of Greenland, 1:500 000, Thule, Sheet 5

2006 ◽  
pp. 1-100 ◽  
Author(s):  
Peter R. Dawes
Keyword(s):  
Raw Materials ◽  
Late Quaternary ◽  
Regional Metamorphism ◽  
Fault Reactivation ◽  
Detrital Zircons ◽  
Dyke Swarm ◽  
Baffin Bay ◽  
West Greenland ◽  
North West ◽  
Geological Map

Abstract Dawes, P.R. 2006: Explanatory notes to the Geological map of Greenland, 1:500 000, Thule, Sheet 5. Geological Survey of Denmark and Greenland Map Series 2, 97 pp. + map These explanatory notes cover part of North-West Greenland defined by latitudes 75°15'N and 78°N and longitudes 57°W and 73°W, a region with appreciable ice cover. The bedrock is dominated by two Precambrian provinces that extend across Baffin Bay into Canada: the highgrade Archaean-Palaeoproterozoic shield overlain by the intracratonic Mesoproterozoic-?Neoproterozoic Thule Basin. Map units are systematically described and introductory sections cover the physical environment, logistics, data sources and geoscientific research. The crystalline shield embraces seven complexes: three of Archaean age, two of Archaean-?Palaeoproterozoic age and two of Palaeoproterozoic age. Isotopic ages of c. 2900 Ma indicate that Neoarchaean orthogneisses are present in part of the region while the existence of Mesoarchaean crust is indicated by c. 3200 Ma detrital zircons. The high-grade orthogneisses and paragneisses of the Thule mixed-gneiss complex were intruded by two plutonic suites, the Kap York meta-igneous complex at c. 2700 Ma and the Smithson Bjerge magmatic association that includes a major anorthosite body. Subsequent deformation, metamorphism and migmatisation led to the formation of gneisses recognised within the Melville Bugt orthogneiss complex . Palaeoproterozoic sedimentation and volcanism represented by the Prudhoe Land supracrustal complex took place after c . 2250 Ma but had ceased by c. 1985 Ma when the Prudhoe Land granulite complex was emplaced. Rocks within the Lauge Koch Kyst supracrustal complex may correlate with the Palaeoproterozoic Karrat Group of West Greenland. Polyphase deformation with isoclinal folding, and regional metamorphism up to granulite-facies grade, affected the region c. 1900 Ma ago, with cooling until c . 1650 Ma. Extensional faulting, intracratonic basin formation and periods of basaltic magmatism occurred during the last 1000 million years of Proterozoic time. After regional dyking at c . 1630 Ma ( Melville Bugt dyke swarm ) followed by mature peneplanation, the Thule Basin developed as an interior fracture and sag depocentre across the area that is now northernmost Baffin Bay. Defined by the unmetmorphosed Thule Supergroup at least 6 km thick, the basin records fluvial to shallow-marine sedimentation and tholeiitic volcanism at least 1270 million years old. The basin is dissected by the Thule half-graben system dominated by WNW-ESE-trending faults thought to have developed during the final tectono-magmatic period dated at c. 700650 Ma. Conspicuous products of this are a major sill complex ( Steensby Land sill complex ) and a regional dyke swarm that parallels the half-grabens ( Thule dyke swarm ). Fault reactivation is probably related to the late Phanerozoic tectonic evolution of Baffin Bay. In addition to the four metallic commodities included on the map - magnetite, copper, iron suphides, ilmenite - there is potential for gold and other mineralisations. The Neoarchaean magnetite province, traceable for over 400 km through the map region, is spatially the largest in Greenland and it is a correlative of the Mary River iron deposits of Baffin Island, Canada. Several raw materials have potential for local handicraft industries, including soapstone and agate. The region hosts a multi-event glacial and marine Middle-Late Quaternary stratigraphy dating back to at least the Saalian/Illinoian (pre-130 ka B.P.). The entire region was probably overriden by the Inland Ice during the Weichselian/Wisconsinian glacial maximum and deglaciated in the early Holocene, 11 000 to 9000 years ago.

Bio- and aminostratigraphy of some Quaternary marine deposits in West Greenland

1984 ◽  
Vol 21 (7) ◽  
pp. 843-852 ◽  
Author(s):  
Svend Funder ◽  
Leifur A. Simonarson
Keyword(s):  
Mytilus Edulis ◽  
Baffin Bay ◽  
West Greenland ◽  
Marine Deposits ◽  
Faunal Assemblages ◽  
Geological Setting ◽  
Chlamys Islandica ◽  
Biological Evidence ◽  
Age Estimates

14C dates and the geological setting of Quaternary marine deposits from three sites in West Greenland indicate a pre-Holocene age. The mollusc faunas at the sites are distinctly different, although all reflect influx of some subarctic water into Baffin Bay. The fauna from Patorfík is the most diverse subfossil Quaternary fauna known from Baffin Bay. Such species as Panopea norvegica and Balanus hameri indicate conditions warmer than the present, although no identical faunal assemblages are known. The fauna at Laksebugt is similar to modern faunas, but the dominating Portlandia arctica and Macoma moësta indicate a climate somewhat colder than the present, and Mytilus edulis suggests the presence of subarctic water. The fauna from Mudderbugt is reworked, but the presence of Chlamys islandica indicates that conditions were not entirely different from the present.Amino-acid analyses on shells from the three sites place them in three distinct aminozones, with Patorfík as the oldest and Laksebugt the youngest. Age estimates using this and geological and biological evidence suggest that the Laksebugt aminozone dates from the isotopic stage 5–6 transition (130 ka). The Patorfík aminozone is probably of mid- or early Quaternary age (235–1800 ka).Correlation with the few previously known pre-Holocene marine deposits of western Greenland implies that only one period of extensive glaciation can be recognized during the Weichsel (Wisconsin) glaciation.

scholarly journals Three decades (1983–2010) of contaminant trends in East Greenland polar bears (Ursus maritimus). Part 1: Legacy organochlorine contaminants

2013 ◽  
Vol 59 ◽  
pp. 485-493 ◽  
Author(s):  
Rune Dietz ◽  
Frank F. Rigét ◽  
Christian Sonne ◽  
Erik W. Born ◽  
Thea Bechshøft ◽  
...  
Keyword(s):  
Ursus Maritimus ◽  
Polar Bears ◽  
East Greenland ◽  
Organochlorine Contaminants
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