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

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Chapt 6. Organisms in Sediments of Tanker Ballast Tanks, page 6- 2 Table 6.1. Taxa Recovered From Ballast Tank Sediments of 12 Tankers. Foraminifera Annelida Mollusca Crustacea Chordata Other inverts. Ammonia hadai Capitellidae Mytilidae Alpheidae Engraulidae Bryozoa Bulimina sp. Nereis sp. Nudibranchia Amphipoda Sciaenidae Sipuncula Elphidium sp. Oligochaeta Balanus balanoides Turbellaria Globigerina sp. Spionidae Calanus Haglophragmoides sp. Syllidae Canuellidae Jadammina macrescens Caridea Lagena sp. Cirripedia Rosalina globularis Crangonidae Trochammina hadai Cumacea Trochammina inflata Grapsidae Trochammina pacifica Harpacticoida Hyperiidae Majidae Ostracoda Tanaidacea Table 6.2. Presence/Absence of Taxa in Ballast Tank Sediment Samples Presented by Source Region(s). Source(s) Diatomacea Foraminifera Annelida Mollusca Crustacea Chordata Other Inverts n Korea P P P A A A A 1 LB & Korea P P P P P P P 2 PS A A A P P A P 1 PS & SF P P P P P P P 1 SF A P P P P P P 6 SF&China A A P A P A A 1
Chapt 6. Organisms in Sediments of Tanker Ballast Tanks, page 6- 3 Figure 6.1. Prevalence (A) and numbers (B) of organisms recovered from sediments of tanker ballast tanks. Bars indicate means for 12 tankers. A Cnidaria Chordata Diatomacea Other Inverts Foraminifera Mollusca Crustacea Annelida 0 20 40 60 80 PERCENT SHIPS n=12 B Cnidaria Chordata Diatomacea Other Inverts Foraminifera Mollusca Annelida Crustacea NA NA 0 20 40 60 80 # OF ORGANISMS RECOVERED/SHIP 6D. Conclusions Sediment that accumulated in the bottom of ballast tanks often contained organisms from a diverse array of taxa. Many of these were adults in full reproductive condition. At least one NIS (the foraminiferan Trochammina hadai) found in these samples appears to be established in Prince William Sound, although the current status of this invasion is not known (McGann, pers. comm. 1999). In future work, it would be valuable to sample sediment in ballast tanks that have undergone mid-ocean exchange. It is not clear if bottom-dwelling organisms will be affected by exchange in the same ways as planktonic organisms in the water column. 6E. References McGann, M. 1999. Personal communication. Smith, L.D., M.J. Wonham, L.D. McCann, D.M. Reid, G.M. Ruiz and J.T. Carlton. 1996. Biological invasions by nonindigenous species in United States waters: Quantifying the role of ballast water and sediments. Parts I and II. Final report to the U.S. Coast Guard and the U.S. Department of Transportation.
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page i BIOLOGICAL INVASIONS OF COLD
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page iii • Stephan Benda, Valdez
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page v • From an industry and man
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page vii • The magnitude of seaso
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page ix • The voyage duration of
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page xi microscopes for the study.
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page xiii 9C9. Echinoderms 9C9-1 9C
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