150
E. D. 9. CORNER AND ANTHONY 0 . DAVIES
TABLE VIII. LEVELS OF NITROGEN AND
Sea area
Species
Stase
Temp.
Season
Long Island Sound
Narragansett BEY
Morrison's Pond
(Nova Scotia)
Bras d'Or Lake
(Nova Scotia)
Gulf Stream
Doboy Sound
Test Estuary
(English Channel)
St. George's Harbour
(Bermuda)
Gulf of Maine
Gulf of Maine
Gulf of Maine
Gulf of Maine
English Channel
Clyde Sea-area
Clyde Sea-area
Clyde Sea-area
Clyde Sea-area
Clyde Sea-area
Clyde Sea-area
Clyde Sea-area
Sen Juan Island
(Washington)
Saanich Inlet
(B. Columbia)
Mainly Acartia clauai
Adult
Mainly Acartia sp.
Adult
Acarlia sp.
Nauplii
Acartiu sp.
CII-CIV
Acarlia sp.
cv-CVI
Pseudocalanm minutua, Nauplii
Oithona similia and
Temora longiwrnia
Mixed
Mixed
Nwmysia integer
Sngitta hiepida
Calanus hyperborew
Calanua hyperboreua
Calanua hyperboreua
Calanua hyperboreua
Calanua helgolandicua
Calanua jinmarchicus
Neomyaia rayii
Euphuaia pacifica
CoGpodites
Adults
-
Adult
Adult
Adult
Adult
Adult
Adult
Adult
0
0
CII-CIV
CI-CII &
Nauplii
0
$! and V
$' and V
Adult
Adult
Adult
Adult
13°C
?
16-19'C
Ii%19"C
16-19'C
16-19°C
16-19°C
16-19°C
25°C
15°C
20oc
4-6°C
4-6°C
4-6T
4-6°C
10°C
10°C
10°C
looc
10°C
7°C
11°C
14°C
10°C
4°C
10°C
4°C
Spring
Spring
Autumn
Summer
Summer
Summer
Summer
?
Spring
AutumnWinter
Spring
Spring
Summer
Winter
Spring
Spring
Spring
Spring
Spring
Spring
Autumn
Summer
Summer
Summer
Summer
* Percentage loss as amino acids ;
USW = unfiltered 808 wator ;
Oxygen consumption, unlike nitrogen excretion, is unaffected by the
release of unassimilated soluble material from the gut and is a true
measure of metabolic activity. The fact that nitrogen excretion
increases to a similar extent when the animals feed is therefore consistent with the view that this, too, is essentially the result of increased