The Davis Strait - DCE - Nationalt Center for Miljø og Energi

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66°N 64°N 62°N Mean density N/km2 0 Assessment area 0 50 100 Km 60°N 60°W 66°N 64°N 62°N 102 60°W 60°W Mean density N/km2 0 - 0.2 0.3 - 0.5 0.6 - 1 1.1 - 2 2.1 - 3.5 3.6 - 7.3 Assessment area 0 50 100 Km 60°N 60°W 55°W 55°W 55°W 55°W 50°W Spring 50°W 50°W Autumn 50°W 68°N 66°N 64°N 62°N 68°N 66°N 64°N 62°N 66°N 64°N Mean density 60°W 62°N N/km2 0 - 0.3 0.4 - 0.5 0.6 - 1 1.1 - 1.5 1.6 - 3 3.1 - 5 5.1 - 10 10.1 - 20 20.1 - 45 45.1 - 91.3 Assessment area 0 50 100 Km 60°N 60°W 66°N 64°N 62°N 60°W Mean density N/km2 0 Assessment area 0 50 100 Km 60°N 60°W 55°W 55°W 55°W 55°W 50°W Summer 50°W 50°W Winter Figure 4.7.5. At-sea distribution of great shearwater in the assessment area during spring (Apr-May), summer (Jun-Aug), autumn (Sep-Dec) and winter (Jan-Mar) based on available ship survey and aerial survey data collected in 1988 - 2010. Note that survey coverage and density scale varies between seasons. 50°W 68°N 66°N 64°N 62°N 68°N 66°N 64°N 62°N
Common eider, Somateria mollissima This duck is closely associated with the marine environment. It breeds both dispersed and in colonies on low islands and feeds in shallow coastal waters throughout the assessment area (Fig. 4.7.1). Males assemble in moulting concentrations in remote fjords and archipelagos when the females have brooded the eggs for some time. Females (failed breeders) follow the males somewhat later and most birds moult within 100 km from the breeding site (Mosbech et al. 2006b). The flight feathers are moulted simultaneously, which means that the birds become flightless for about three weeks. After moulting the eiders migrate to wintering areas in the open water region of Southwest Greenland (Lyngs 2003, Mosbech et al. 2007). Total number of breeding birds in the assessment area is unknown, but numbers probably amount to some thousand pairs (L. M. Rasmussen, pers. comm.). The population declined considerably during the 1900s due to nonsustainable harvest (Gilliland et al. 2009). But recently, after hunting in the spring was prohibited, population recovery has been evident in the district of Ilulissat and Upernavik, where active management and monitoring using local stakeholders has been applied. An annual population increase of ∼15% has recently been estimated for these breeding areas (Merkel 2008, 2010a). Recent surveys in the central part of the assessment area indicated a similar population increase (Rasmussen 2010, 2011). The common eider population in West Greenland until recently had an unfavourable conservation status due to the decline. It was therefore listed as ‘Vulnerable’ (VU) on the Greenland Red List (Boertmann 2007). However, this status now seems out-dated. Breeding colonies, moulting areas and staging areas during migration and wintering are sensitive, as large number of birds may stay on the water in such areas. Especially during winter, the density of common eiders is high in the coastal zone of the assessment area (Fig. 4.7.6), as large numbers of breeding birds from Northwest Greenland and eastern Canada spend the winter in Southwest Greenland (Lyngs 2003, Mosbech et al. 2006b). In 1999 the winter population of common eiders was estimated to 460,000 birds in Southwest Greenland, of which a large proportion occurred within the assessment area (Merkel et al. 2002). Presumably the winter population has increased considerably since then. Particularly the fjords and bays around Nuuk are important wintering areas (Merkel et al. 2002, Blicher et al. 2011). 103
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THE DAVIS STRAIT A preliminary stra
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AU THE DAVIS STRAIT A preliminary s
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Contents Preface 5 Summary and conc
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Preface The Bureau of Minerals and
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anks are normally ice free or have
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ed in large numbers in the assessme
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cetaceans (whales and harbour porpo
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placement and transport corridors.
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shrimp and Greenland halibut, for i
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Mitigation The risk of accidents an
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Miljøet Det pelagiske miljø De fy
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Fangst og udnyttelse Menneskelig ud
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Indenfor fiskeriet, er risikoen for
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Kumulative effekter Der vil være e
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dybde, kan muligvis ændre på konk
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ingsæl, spættet sæl, finhval, pu
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tassannga misilittagarineqalersut s
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Timmisat imarmiut amerlasoorsuit, q
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lu klimami pissutsinut atuutunut tu
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toqunartoqarneri arrortikkuminarner
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toqusarnermik taarserneqarluni, uum
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minguttitamiit ajoquserneqarsinnaan
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Kalaallit Nunaanni immikkut ulorian
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Figure 1.1.1. The assessment area,
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VEC = Valued Ecosystem Components V
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tings/well and in total 6,000 tons
Page 53 and 54: 2.9 Other activities Ship transport
Page 55 and 56: Figure 3.2.1. Major sea surface cur
Page 57 and 58: 3.2.3 The coasts The coastal zone b
Page 59 and 60: Jan Feb May Apr May Jul Aug Sep Oct
Page 61 and 62: Figure 3.3.3. Average sea ice exten
Page 63 and 64: Figure 3.3.4. Major iceberg sources
Page 65 and 66: 4 Biological environment 4.1 Primar
Page 67 and 68: Figure 4.1.1. Monthly progressions
Page 69 and 70: Figure 4.2.1. Calanus spp. biomass
Page 71 and 72: 69 Fish larvae are important compon
Page 73 and 74: Figure 4.2.4. Red dots indicate san
Page 75 and 76: focus should improve our understand
Page 77 and 78: The coastal zone of the assessment
Page 79 and 80: 183 macroalgal species (excl. the b
Page 81 and 82: Table 4.3.1. Distribution of macroa
Page 83 and 84: Chaetomorpha capillaris Chaetomorph
Page 85 and 86: egistered in the area. A similar pa
Page 87 and 88: The sea ice algal production in the
Page 89 and 90: 1990) and then north (mid-2000s) in
Page 91 and 92: September when they have reached a
Page 93 and 94: Salmon, Salmo salar Biology and dis
Page 95 and 96: tween 1 and 2.4 billion individuals
Page 97 and 98: It should be noted that the breedin
Page 99 and 100: 66°N 64°N 62°N 60°W 60°W Arcti
Page 101 and 102: Knowledge on habitat use of the win
Page 103: Great shearwater, Puffinus gravis T
Page 107 and 108: Figures 4.7.7. At-sea distribution
Page 109 and 110: Figure 4.7.9. Distribution and inte
Page 111 and 112: Figure 4.7.11. At-sea distribution
Page 113 and 114: The Iceland gull has a favourable c
Page 115 and 116: Figure 4.7.12. Distribution and int
Page 117 and 118: Murres spend very long time on the
Page 119 and 120: The puffins are migratory, but thei
Page 121 and 122: Figure 4.7.16. Density of whitetail
Page 123 and 124: sonal communication 1984) varied wi
Page 125 and 126: Numbers: The status of the walrus s
Page 127 and 128: tively impacted by disturbance from
Page 129 and 130: surround the eyes and line the oral
Page 131 and 132: Sensitivity: Non-whelping hooded se
Page 133 and 134: winter in reoccurring leads and pol
Page 135 and 136: Critical and important habitats: Th
Page 137 and 138: Figure 4.8.6. The main frequency ra
Page 139 and 140: tude breeding grounds and high lati
Page 141 and 142: Figure 4.8.7. Migration routes for
Page 143 and 144: long-finned squid (Loligo pealei) (
Page 145 and 146: Until recently the abundance of har
Page 147 and 148: Figure 4.8.9. Main summer and winte
Page 149 and 150: 4.9.1 Pelagic hotspots The shelf ba
Page 151 and 152: 5 Natural resource use 5.1 Commerci
Page 153 and 154: 66°N 64°N 62°N 60°W Snow crab c
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Figure 5.1.4. Distribution and size
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Salmon, Salmo salar The fishery for
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Figure 5.2.2. Annual number of king
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2003/04-2007/08 the catch averaged
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66°N 64°N 62°N 66°N 64°N 62°N
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Figure 5.2.6. The West Greenland ca
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Figure 5.3.1. The number of cruise
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6.2 National nature protection legi
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formation see the IBA website (http
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glaucous gulls, great black-backed
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7.2 Conclusions on contaminant leve
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structures containing up to 10 ring
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The current warming trends are ofte
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species interactions. In the review
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8.5 Marine mammals and seabirds The
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9 Impact assessment David Boertmann
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10 Impacts of the potential routine
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Impact of seismic noise on zoo- and
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type or timing of vocalisations. In
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detailed studies on the effect of s
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Table 10.1.1. Overview of potential
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een eliminated on the grounds of en
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10.3 Development and production act
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hydrocarbon activities in Greenland
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parts of the shelf. Activities in t
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Seabird hunting is widespread and i
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There is a risk of reduced availabi
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General knowledge on the potential
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week period after the Exxon Valdez
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In general, species with distinct s
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A study of the density and distribu
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majority of the biomass. From a bio
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waters longer. The coastal fishery
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Seal pups are very sensitive to dir
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indicates that similar long-term im
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other parameters. It should be note
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Autumn (September-November) During
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to oil spills and produced water. I
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12.2.1 Ecotoxicological Monitoring
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Andersen JB, Böcher J, Guttmann B,
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Anon (2011b). Selvstyrets bekendtg
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Blackwell SB, Lawson JW, Williams M
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Born EW (2003). Reproduction in mal
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Buch E, Nielsen MH, Pedersen SA (20
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Clark RC, Finley JS (1977). Effects
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Dietz R, Heide-Jørgensen MP (1995)
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Falk K, Møller S (1997). Breeding
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Gjertz I, Kovacs KM, Lydersen C, Wi
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Hansen JLS, Hjorth M, Rasmussen MB,
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Heide-Jørgensen MP, Laidre KL (201
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Horsted SA (2000). A review of the
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Jonas RF (1974). Prospect for the e
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Ketten DR, Lien J, Todd S (1993). B
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Lick R, Piatkowski U (1998). Stomac
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Melle W, Serigstad B, Ellertsen B (
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Mosbech A, Danø R, Merkel FR, Sonn
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Nielsen OK, Lyck E, Mikkelsen MH, H
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Parry GD, Gason A (2006). The effec
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Popper AN, Fewtrell J, Smith ME, Mc
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Rivkin RB, Tian R, Anderson MR, Pay
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Schaaning MT, Trannum HC, Øxnevad
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Simpson AC, Howell BR, Warren PJ (1
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Taylor MK, Akeeagok S, Andriashek D
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Wegeberg S, Bangsholt J, Dolmer P,
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The Davis Strait - DCE - Nationalt Center for Miljø og Energi

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