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

Chapt 3. Biological Characteristics of Ballast Water, page 3- 20
Figure 3.9. Densities of organisms in the ballast water arriving to Port Valdez from domestic ports in June of
three consecutive years, 1997-1999. The estimated mean densities (#/m³ and standard errors) are shown for all
organisms, excluding chain-forming diatoms, by source port in each year (sample size indicated above bars). Source
ports include: Puget Sound, WA (PS); San Francisco Bay, CA (SF); Long Beach, CA (LB). Densities are also
shown by year for all three source ports combined (Overall).
3
5
3
10
1.E+04
2
3
4
3
4
6
12
11
1997
1998
1999
Density (#/m³)
1.E+02
1.E+00
LB SF PS Overall
SOURCE
Figure 3.10. Densities of major taxonomic groups in the ballast water arriving to Port Valdez from domestic
source ports in June of three consecutive years, 1997-1999. The estimated mean densities (#/m³ and standard
errors) are shown for 10 different major groups of organisms in ballast water of ships arriving by year from three
different source ports. Eight groups are distinct phyla that were most abundant in the ballast water, and two are
composed of multiple phyla, including eggs and trochophores (which were abundant but could not be classified by
phylum) and all other invertebrates. Sample size for each source port and year as indicated in Figure 3.9. Indicated
by * are instances where ANOVA showed significant differences in density among years (above bars) and among
ports (below taxa labels) with confidence >95%.
100000
10000
1000
100
LB (JUNE)
1997
1998
*
1999
* * *
DENSITY (#/m³)
10
1
100000
Dinoflagellata
10000
1000
100
10
Diatomacea
* *
Protozoa
Annelida
SF (JUNE)
Mollusca
Crustacea
Echinodermata
Other Inverts
Chordata
1997
1998
1999
Eggs & Trocophores
*
*
1
100000
10000
1000
100
10
1
*
*
*
PS (JUNE)
1997
1998
1999
Dinoflagellata
Diatomacea
Protozoa
Annelida
Mollusca
Crustacea
Dinoflagellata
Echinodermata
*Diatomacea
Other Inverts
*Protozoa
Chordata
Annelida
Eggs & Trocophores
Mollusca
Crustacea
Echinodermata
Other Inverts
Chordata
*Eggs & Trochophores