Seabirds utilizing the Northeast Water polynya

Falk, Knud; Hjort, Christian; Andreasen, Claus; Christensen, Kim; Elander, Magnus; Ericson, Marna E.; Kampp, Kaj; Kristensen, Reinhardt Møbjerg; Møbjerg, Nadja; Møller, Søren; Węsławski, Jan Marcin

doi:10.1016/s0924-7963(96)00066-8

Cited by 24 publications

(22 citation statements)

References 18 publications

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“…Most species of seabirds arrive in the North Water in April or May and depart in September. Estimation of the number of days that each seabird population occupies the polynya (Table 1) was based on our observations of seabirds at sea and reproductive status of birds collected at sea (N. Karnovsky, unpublished) combined with published data on incubation lengths and fledging ages (Lovenskiold, 1964;Roby, 1981;Falk et al, 1997). Some black guillemots are known to remain in the polynya throughout the winter (Renaud and Bradstreet, 1980).…”

Section: Estimation Of Energetic Demands Of Seabirds In the North Watermentioning

confidence: 99%

“…Seabirds consume almost 3000 times more carbon in the North Water than in the Northeast Water (Greenland Sea) (Falk et al, 1997). The Northeast Water supports small populations of Northern Fulmars and Blacklegged kittiwakes (Falk and Moller, 1995) and virtually no subsurface feeders.…”

Section: Carbon Flux To Upper Trophic Predators In Polar Regionsmentioning

confidence: 99%

“…The Northeast Water supports small populations of Northern Fulmars and Blacklegged kittiwakes (Falk and Moller, 1995) and virtually no subsurface feeders. This absence of subsurface feeders in the Northeast Water may reflect the low levels of production in terms of both copepod biomass and Arctic cod production (Fortier et al, 1994;Hirche et al, 1994;Ashjian et al, 1995;Falk et al, 1997).…”

Section: Carbon Flux To Upper Trophic Predators In Polar Regionsmentioning

confidence: 99%

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Estimation of carbon flux to dovekies (Alle alle) in the North Water

Karnovsky

Hunt

2002

Deep Sea Research Part II: Topical Studies in Oceanography

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We modeled the energy demand of seabirds in the North Water, focusing on the planktivorous dovekie (Alle alle), the dominant species in the polynya. For the dovekie we provided an estimate of carbon flux that included aspects of spatial and temporal variability. We estimated the density, diet, and carbon consumption of dovekies throughout the polynya, from the time of their arrival in mid-May until they began to migrate south in September. Our model showed that this species is responsible for 92-96% of the energy demand and therefore carbon flux to seabirds. Dovekies consumed 73.7-147 Â 10 3 mt C yr À1 in the North Water. Average flux rates to dovekies in the polynya were 0.74 g C m À2 yr À1 , with a maximum estimated rate of 24 mg C m À2 d À1 in the eastern portion of the study area in May. However, when averaged over the entire polynya and period of occupancy, the proportion of pelagic primary production that went to dovekies was negligible (0.3-0.6%). Our observations of dovekie distribution, indicate that the major flux of carbon to seabirds occurred close inshore along the Greenland coast. There in May, carbon flux to dovekies was estimated to be 5-14% of the potential particulate export of phytoplankton. Our estimates of the spatial distribution of carbon flux to birds suggest the extraordinary importance of production along the west coast of Greenland. r

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Section: Estimation Of Energetic Demands Of Seabirds In the North Watermentioning

confidence: 99%

Section: Carbon Flux To Upper Trophic Predators In Polar Regionsmentioning

confidence: 99%

Section: Carbon Flux To Upper Trophic Predators In Polar Regionsmentioning

confidence: 99%

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Estimation of carbon flux to dovekies (Alle alle) in the North Water

Karnovsky

Hunt

2002

Deep Sea Research Part II: Topical Studies in Oceanography

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“…Pedersen 1930;Norderhaug 1970;Meltofte et al 1981;Elander & Blomqvist 1986;Mehlum 1989;Isaksen & Bakken 1995;Mehlum & Isaksen 1995;Falk et al 1997). In Greenland, little is known about the historical breeding sites of birds, despite a good knowledge of their recent distribution (e.g.…”

mentioning

confidence: 99%

A Holocene seabird record from Raffles Sø sediments, East Greenland, in response to climatic and oceanic changes

Wagner¹,

Melles²

2001

SBOR

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Melles, M. 2001 (September): A Holocene seabird record from Raf es Sø sediments, East Greenland, in response to climatic and oceanic changes. Boreas, Vol. 30, pp. 228-239. Oslo. ISSN 0300-9483.A 3.5-m-long sediment sequence from a lake on Raf es Ø, off Liverpool Land, East Greenland, was investigated for chronology, lithology, palynology and biogeochemistry. Radiocarbon-dating of plant remains and the lithology of the sediment succession indicate continuous sedimentation since deglaciation of the area prior to 10 000 cal. yr BP. The postglacial palynological record shows little variation and evidence of a wind-transported pollen supply, both resulting from the geographical characteristics of Raf es Ø. Signi cant variations in the biogeochemical data re ect changes in aquatic bioproduction. These changes depend to some extent on climatic changes; however, they are mainly due to variations in seabird breeding colonies in the catchment which in uence nutrient and cadmium supply to the lake. Large seabird breeding colonies were present between 7500 and 1900, from 1000 to 500, and since c. 100 cal. yr BP. Their absence prior to 7500 cal. yr BP may be the result of unsuitable feeding conditions close to Raf es Ø caused by a too dense or too open seaice cover. In contrast, between 1900 and 1000 and from 500 to 100 cal. yr BP, the seabird settlement was probably restricted by an insuf ciently long breeding season due to cold climate conditions in East Greenland.

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“…With an arrival time at the nesting grounds in north-eastern Greenland in early June (Salomonsen 1967), a northward passage of ivory gulls along the East Greenland Current in late May is logical. In the early 1990s, 400Á500 pairs of ivory gulls were estimated to nest in north-eastern Greenland (Falk et al 1997), while a more recent estimate gives some 900 pairs in Greenland, mostly in the north-east (Gilg et al 2009). In addition, there are probably still unknown colonies in the area (Gilg et al 2009).…”

Section: Discussionmentioning

confidence: 99%

At-sea observations of the spring migration and pair bonding of ivory gulls (Pagophila eburnea) around Svalbard and East Greenland

Kylin

2011

Polar Research

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Because of logistical constraints little previous information exists on ivory gulls (Pagophila eburnea) in the waters around Svalbard and the east coast of Greenland in late winter/early spring. The Swedish Arctic Ocean 2002 expedition investigated these areas at that time of year and in this paper I report on the observations of ivory gulls made during the expedition. The ivory gull was essentially absent from open waters but was the most common seabird in areas with pack ice, showing behavioural differences depending on local conditions. Generally, the number of ivory gulls was low when there was little plankton in the water. Ivory gulls followed the ship depending on the availability of food items in the wake and also depending on competition from other species, particularly glaucous gulls (Larus hyperboreus). Although ivory gulls were present in most of Fram Strait and the northern part of the East Greenland Current during 6 and 19 May, sightings were few and correlated to the amount of plankton in the water. Aggregations of several hundred were seen on the ice where copulation and other social interaction took place. A previously undescribed pair bonding behaviour during which females seemed to select between two competing males was observed north of Svalbard on 30 April–1 May. Off Scoresby Sound on 25 May, more than 700 birds were seen migrating north, while farther south along the Greenland coast on 30 May there was little indication of migration although many ivory gulls were seen

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Seabirds utilizing the Northeast Water polynya

Cited by 24 publications

References 18 publications

Estimation of carbon flux to dovekies (Alle alle) in the North Water

Estimation of carbon flux to dovekies (Alle alle) in the North Water

A Holocene seabird record from Raffles Sø sediments, East Greenland, in response to climatic and oceanic changes

At-sea observations of the spring migration and pair bonding of ivory gulls (Pagophila eburnea) around Svalbard and East Greenland

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