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

Chapt 9C4. Peracaridan Crustaceans, page 9C4- 10
western oceans (Figure 9C4.6). Eastern ocean species thus have not evolved in conditions that
would create broad temperature tolerance ranges. In contrast, most western ocean organisms
survive temperature ranges exceeding the total temperature range of broad eastern ocean areas.
Eastern oceans below 50 o N, are thus broad thermal targets for western ocean species over space
and time while western ocean coasts are narrow thermal targets for eastern ocean species.
N.W. Pacific
N.E. Pacific
30
30
25
25
SST (Deg. C)
20
15
10
5
‘
SST (Deg. C)
20
15
10
5
0
-5
JF MA MJ JA SO ND
60
50
30
40
Lat. N
0
-5
JF MA MJ JA SO ND
60
50
30
40
Lat. N
Months
Months
N.W. Pacific
N.E. Pacific
5
5
4
4
Precip. (mm / day)
3
2
1
0
-1
-2
-3
JF MA MJ JA SO ND
30
60
50
40
Lat. N
Precip. (mm / day)
3
2
1
0
-1
-2
-3
JF MA MJ JA SO ND
30
60
50
40
Lat. N
Months
Months
Figure 9C4.4. Northwest and northeast Pacific sea surface temperature in degrees Celsius and bimonthly
precipitation minus evaporation in mm -d at ten degree latitude intervals for the bimonthly periods of Jan-Feb, Mar-
Apr, May-Jun, Jul-Aug, Sep-Oct and Nov-Dec. (Note: axes of latitude are reversed between graphs of temperature
and