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

Chapt 3. Biological Characteristics of Ballast Water, page 3- 14
Figure 3.5. Densites of major taxonomic groups in ballast water arriving to Port Valdez for each source port.
The estimated mean densities (#/m³ and standard errors) are shown separately for 10 different major groups of
organisms in ballast water of ships by source port. 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. Source ports include: Puget Sound, WA (PS); San
Francisco Bay, CA (SF); Long Beach, CA (LB); Foreign port with open-ocean exchange (EX); Columbia River,
Oregon (OR); and Barbers Point, Hawaii (HI). The data include all sample dates. Sample sizes for each source port
as shown in Figure 3.3. Indicated by * are those taxa where mean density among ports, excluding HI and OR, is
significantly different by ANOVA with confidence >95%.
100000
DINOFLAGELLATA*
100000
10000
10000
1000
1000
10100
2
10 100
10
10
0 1
01
PS SF LB EX OR HI
DIATOMACEA*
PS SF LB EX OR HI
100000
10000
1000
10100
2
10
0 1
10 4 0
PROTOZOA*
PS SF LB EX OR HI
100000
10000
4
1000
10100
2
10
01
ANNELIDA*
PS SF LB EX OR HI
DENSITY (#/m³)
100000
MOLLUSCA
10000
1000
10100
2
10
1
PS SF LB EX OR HI
100000
10000
10 4
10 4 0
1000
10 2
100
10
1
CRUSTACEA*
PS SF LB EX OR HI
100000
10000
ECHINODERMATA*
100000
10000
10 4
1000
1000
10100
2
100
10 2
10
10
01
0 1
PS SF LB EX OR HI
OTHER INVERTS*
PS SF LB EX OR HI
100000
100000
CHORDATA*
10000
10 10000
1000
1000
10100
2
10100
2
10
10
0 1
0 1
PS SF LB EX OR HI
SOURCE
EGGS AND TROCHOPHORES
PS SF LB EX OR HI