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

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228 Marine mammals – distribution and abundance, relationship to sea ice, stock identity and movement, general biological knowledge of less known species and of endangered species Relevance: Marine mammals are sensitive to oil spills and to anthropogenic noise. To mitigate impacts and understand the consequences of these impacts it is important to know where marine mammals are, why they are there and what their status is. Methods: Tracking by means of satellite transmitters and bio-loggers, dedicated surveys, passive acoustic monitoring, molecular studies and markrecapture (tags, biopsies or photo-ID, depending of species). Marine mammals – reactions to noise from drilling and seismic studies Relevance: Marine mammals are sensitive to noise and there is a risk of displacement from critical habitats especially for whales if there is a cumulative impact from concurrent activities in several licence blocks. Knowledge on reaction distance and the potential for habituation to noise is important. Methods: Field studies, passive acoustic monitoring, satellite tracking. 12.2 Knowledge gaps generic to the arctic The effects of oil and different oil components on marine organisms have to some degree been studied in laboratories. However, effects in the field and especially in the Arctic are less well known and because the Arctic food web is dependent on a few key species, effects on these would be very relevant to study in order to assess and mitigate potential impacts. Assessment criteria and adequate monitoring strategies should be established. Below some important issues that should be addressed before production activities are initiated in Greenland are listed. Some of these should be addressed by international research cooperation. Many relate to how spills and releases behave and impact organisms under Arctic conditions. In relation to oil spills some important issues to address include: • Biological effects and sensitivity to PAHs and other oil components of key species (e.g. sandeel, capelin) under Arctic conditions • Rate of degradation of oil and chemicals in Arctic water and sediment • Oil vapours and their effects on marine mammals. Similar issues relating to produced water are: • Fate, behaviour and toxicity of produced water in cold and ice-covered waters • Biological effects and sensitivity of key species (e.g. sandeel, capelin) to the different components of produced water. Interaction of contaminants: • There are knowledge gaps concerning the interactions between impacts of oil related pollution and other contaminants such as POPs and heavy metals in relevant species living in the assessment area. Integrated studies on these issues are needed.
12.2.1 Ecotoxicological Monitoring Assessment criteria have to be established when using biological indicators to assess whether there is an unacceptable impact from discharges. These will be based on ecotoxicological tests that cover the sensitivity range of relevant species at different trophic levels. To establish such environmental assessment criteria (EAC) toxicological tests have to be developed or adapted using relevant species from the Davis Strait. Knowledge concerning species’ sensitivity, assessment criteria as well as an adequate monitoring strategy should be developed. 12.3 Proposal for a new environmental study programme Based on this preliminary SEIA for the Davis Strait assessment area DCE and GINR propose to develop a strategic environmental study programme for the area to strengthen the knowledge base for planning, mitigation and regulation of oil activities. The study programme will include an updated SEIA and Oil Spill Sensitivity Atlas. 229
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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
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2.9 Other activities Ship transport
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Figure 3.2.1. Major sea surface cur
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3.2.3 The coasts The coastal zone b
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Jan Feb May Apr May Jul Aug Sep Oct
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Figure 3.3.3. Average sea ice exten
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Figure 3.3.4. Major iceberg sources
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4 Biological environment 4.1 Primar
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Figure 4.1.1. Monthly progressions
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Figure 4.2.1. Calanus spp. biomass
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69 Fish larvae are important compon
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Figure 4.2.4. Red dots indicate san
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focus should improve our understand
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The coastal zone of the assessment
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183 macroalgal species (excl. the b
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Table 4.3.1. Distribution of macroa
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Chaetomorpha capillaris Chaetomorph
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egistered in the area. A similar pa
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The sea ice algal production in the
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1990) and then north (mid-2000s) in
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September when they have reached a
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Salmon, Salmo salar Biology and dis
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tween 1 and 2.4 billion individuals
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It should be noted that the breedin
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66°N 64°N 62°N 60°W 60°W Arcti
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Knowledge on habitat use of the win
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Great shearwater, Puffinus gravis T
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Common eider, Somateria mollissima
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Figures 4.7.7. At-sea distribution
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Figure 4.7.9. Distribution and inte
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Figure 4.7.11. At-sea distribution
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The Iceland gull has a favourable c
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Figure 4.7.12. Distribution and int
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Murres spend very long time on the
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The puffins are migratory, but thei
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Figure 4.7.16. Density of whitetail
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sonal communication 1984) varied wi
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Numbers: The status of the walrus s
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tively impacted by disturbance from
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surround the eyes and line the oral
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Sensitivity: Non-whelping hooded se
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winter in reoccurring leads and pol
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Critical and important habitats: Th
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Figure 4.8.6. The main frequency ra
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tude breeding grounds and high lati
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Figure 4.8.7. Migration routes for
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long-finned squid (Loligo pealei) (
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Until recently the abundance of har
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Figure 4.8.9. Main summer and winte
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4.9.1 Pelagic hotspots The shelf ba
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5 Natural resource use 5.1 Commerci
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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
Page 179 and 180: The current warming trends are ofte
Page 181 and 182: species interactions. In the review
Page 183 and 184: 8.5 Marine mammals and seabirds The
Page 185 and 186: 9 Impact assessment David Boertmann
Page 187 and 188: 10 Impacts of the potential routine
Page 189 and 190: Impact of seismic noise on zoo- and
Page 191 and 192: type or timing of vocalisations. In
Page 193 and 194: detailed studies on the effect of s
Page 195 and 196: Table 10.1.1. Overview of potential
Page 197 and 198: een eliminated on the grounds of en
Page 199 and 200: 10.3 Development and production act
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Page 203 and 204: parts of the shelf. Activities in t
Page 205 and 206: Seabird hunting is widespread and i
Page 207 and 208: There is a risk of reduced availabi
Page 209 and 210: General knowledge on the potential
Page 211 and 212: week period after the Exxon Valdez
Page 213 and 214: In general, species with distinct s
Page 215 and 216: A study of the density and distribu
Page 217 and 218: majority of the biomass. From a bio
Page 219 and 220: waters longer. The coastal fishery
Page 221 and 222: Seal pups are very sensitive to dir
Page 223 and 224: indicates that similar long-term im
Page 225 and 226: other parameters. It should be note
Page 227 and 228: Autumn (September-November) During
Page 229: to oil spills and produced water. I
Page 233 and 234: Andersen JB, Böcher J, Guttmann B,
Page 235 and 236: Anon (2011b). Selvstyrets bekendtg
Page 237 and 238: Blackwell SB, Lawson JW, Williams M
Page 239 and 240: Born EW (2003). Reproduction in mal
Page 241 and 242: Buch E, Nielsen MH, Pedersen SA (20
Page 243 and 244: Clark RC, Finley JS (1977). Effects
Page 245 and 246: Dietz R, Heide-Jørgensen MP (1995)
Page 247 and 248: Falk K, Møller S (1997). Breeding
Page 249 and 250: Gjertz I, Kovacs KM, Lydersen C, Wi
Page 251 and 252: Hansen JLS, Hjorth M, Rasmussen MB,
Page 253 and 254: Heide-Jørgensen MP, Laidre KL (201
Page 255 and 256: Horsted SA (2000). A review of the
Page 257 and 258: Jonas RF (1974). Prospect for the e
Page 259 and 260: Ketten DR, Lien J, Todd S (1993). B
Page 261 and 262: Lick R, Piatkowski U (1998). Stomac
Page 263 and 264: Melle W, Serigstad B, Ellertsen B (
Page 265 and 266: Mosbech A, Danø R, Merkel FR, Sonn
Page 267 and 268: Nielsen OK, Lyck E, Mikkelsen MH, H
Page 269 and 270: Parry GD, Gason A (2006). The effec
Page 271 and 272: Popper AN, Fewtrell J, Smith ME, Mc
Page 273 and 274: Rivkin RB, Tian R, Anderson MR, Pay
Page 275 and 276: Schaaning MT, Trannum HC, Øxnevad
Page 277 and 278: Simpson AC, Howell BR, Warren PJ (1
Page 279 and 280: 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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