Biological Invasions of Cold-Water Coastal Ecosystems - Aquatic ...

More documents

Recommendations

Info

Chapt 9C7. Shelled Molluscs, page 9C7- 1 Chapter 9C7. Focal Taxonomic Collections: Shelled Molluscs Nora Foster, Aquatic Collection, University of Alaska Museum Methods Molluscs were collected and identified by N. Foster at sites in Prince William Sound during June 20-28, 1998 and August 8-14, 1999. In 1999 the field survey was expanded to include sites in Homer, Seward, and Hinchinbrook Entrance (see Fig. 9A.2 above). Also, J. Goddard and L. Schickel participated in the second year’s field collecting and identification, providing expertise in opisthobranch taxonomy (see Chapt 9C8. Opisthobranch Molluscs). Site information. Site information was collected by J. Chapman & T. Miller (see Chapt 9B). Sampling and processing. Presence and relative abundance (recorded as abundant, common, or rare) of the easily identified and abundant species were recorded in the field. Field notes were then transferred to spreadsheets maintained by J. Chapman. Voucher specimens of small or rare, mollusks were collected and or were preserved in 10% formalin. Identifications were made by N. Foster at the University of Alaska Museum Aquatic Collection. Identifications and distributions. No comprehensive reference is available for Alaskan marine mollusca. Major references used for both identifications and distribution records include Foster (1991) , Coan and Scott (unpublished draft ), Baxter (1987), Turgeon (1998), Kozloff (1996), and Harbo (1997). Voucher collections form this study will be accessioned into the UAM Aquatic Collection as accession 1998-003 and 1999-001. Results Seventy-nine mollusc species were collected or identified from 27 sites in 1998 (Table 9C7.1). Sixty- six three species were collected or identified from 16 sites in 1999 (Table 9C7.2). Mollusks were collected from three general types of habitats: 1. Human-made structures, including oyster lantern nets, and associated floats and buoys, and docks. Characteristic mollusks from fouling communities are Mytilus trossulus, Lacuna vincta, Hiatella arctica. This represented the richest habitat for nudibranchs, including 12 new records. Small mytilids were examined, to look for Musculista stenhousia. 2. Mudflats. Upper intertidal areas of mudflats, near Cordova and Valdez and Homer were dominated by Mya arenaria. A search was made for Nuttalia obscurata, Batillaria cumingi, Ilyanassa obsoleta, and Nassa fratercula, but these potenial NIS were not found at any site of our surveys. 3. Rocky intertidal zones of beaches, sheltered bays with eelgrass. Fauna of rocky intertidal areas, both in bays and headlands is fairly well documented. It is the habitat that is richest in species, but has fewest NIS candidates or new collecting records. In combination for the two years, 115 species of molluscs were sampled (Table 9C7.3). Of these species, the soft-shelled clam Mya arenaria is an NIS (Strasser 1999) that was widely distributed as a self-sustaining population in intertidal soft sediments of protected bays throughout Prince William Sound. Recently, Foster examined archaeological evidence for
Chapt 9C7. Shelled Molluscs, page 9C7- 2 Table 9C7.1. Shelled Molluscs 1998 Survey Harbors Valdez Cordova Whittier Mud bays Valdez Bligh Island Valdez Arm Growler Island Cordova Headlands & Reefs Valdez Arm Busby Island Green Island Rocky Bays Gastropoda x Acmaea mitra x x x Acteocina harpa x Aglaja ocelligera Alia gauspata x x x x Alvania sp. x x x x x Archidoris montereyensis x x x x Barleeia sp. x Buccinum baeri x x x Cerithiidae x Cerithiopsis sp. x x Crepidula dorsata x Crepidula perforans x Crepidula sp. x Cryptobranchia concentrica x Cryptonatica affinis x x Dendronotus Northwest Bay Fouling Valdez Cordova Whittier Bligh Island Eagilik Bay Evans Island Knight Island Lake Bay Main bay Sheep Bay Shotgun Cove Squaw Bay Port Valdez Valdez Arm Windy Bay Dendronotus albopunctatus x Dendronotus frondosus x x Diplodonta impolita x Dorid nudibranch x x x Doridella steinbergi x x x Eubranchus olivaceous x x Fusitriton oregonensis x Granulina margaritula x Haminoea virescens x x x Hermissenda crassicornis x x x x x Lacuna sp. x x x x x x x Lacuna marmorata x x x x x Lacuna vincta x x x x x x x Lepeta caeca x
Page 1 and 2:
page i BIOLOGICAL INVASIONS OF COLD
Page 3 and 4:
page iii • Stephan Benda, Valdez
Page 5 and 6:
page v • From an industry and man
Page 7 and 8:
page vii • The magnitude of seaso
Page 9 and 10:
page ix • The voyage duration of
Page 11 and 12:
page xi microscopes for the study.
Page 13 and 14:
page xiii 9C9. Echinoderms 9C9-1 9C
Page 15 and 16:
Chapt 1. Introduction, page 1- 2 pa
Page 17 and 18:
Chapt 1. Introduction, page 1- 4 co
Page 19 and 20:
Chapt 1. Introduction, page 1- 6 79
Page 21 and 22:
Chapt 1. Introduction, page 1- 8 pr
Page 23 and 24:
Chapt 1. Introduction, page 1- 10 R
Page 25 and 26:
Chapt 2. Ballast Water Delivery Pat
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Chapt 3. Biological Characteristics
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Chapt 4. Predicting Initial Surviva
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Chapt 5 Ballast Water Exchange Expe
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Chapt 6. Organisms in Sediments of
Page 75 and 76:
Chapt 6. Organisms in Sediments of
Page 77 and 78:
Chapt 7. Organisms Fouling Hulls an
Page 79 and 80:
Chapt. 8. Summary of NIS, page 8- 1
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Chapt 9A. Overview of NIS Surveys,
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Chapt 9B. NIS Surveys: Rapid Commun
Page 115 and 116:
Chapt 9C1. Marine Plants, page 9C1-
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Chapt 9C2. Planktonic Cnidaria, Cte
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Chapt 9C3. Polychaete Worms, page 9
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Chapt 9C4. Peracaridan Crustaceans,
Page 175 and 176:
Page 177 and 178:
Page 179 and 180: Chapt 9C4. Peracaridan Crustaceans,
Page 205 and 206: Appendix Table 9C4.5. Continued Cha
Page 207 and 208: Appendix Table 9C4.7. UAF unidentif
Page 221 and 222: Chapt 9C5. Copepod Crustaceans, pag
Page 229: Chapt 9C6 Decapod Crustaceans, page
Page 233 and 234: Chapt 9C7. Shelled Molluscs, page 9
Page 241 and 242: Chapt 9C8. Opisthobranch Molluscs,
Page 249 and 250: Chapt 9C9. Echinoderms, page 9C9- 2
Page 251 and 252: Chapt 9C10. Ascidians, page 9C10- 2
Page 259 and 260: Chapt 9D. Fouling Community Surveys
Page 265 and 266: Chapt 9E. Museum, Reference and Vou
Page 273 and 274: Chapt 10. Biodiversity, page 10- 2
Page 281 and 282:
Chapt 10. Biodiversity, page 10- 10
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
Page 319 and 320:
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
Page 331 and 332:
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
show all

Biological Invasions of Cold-Water Coastal Ecosystems - Aquatic ...

Create successful ePaper yourself

Delete template?

Save as template?