Gulf of Maine specifically

Question 0

Nixon 1999 NITROGEN BUDGET in the GULF OF MAINE

Percent upwelling etc

Answer 0

Predominant source of N is upwelling 64%
Along-shelf transport 26%
Estuarine inputs 7%
WHAAAAT NO N2 FIXATON? Or is it the 3%?

Question 1

Temp change GOM

Answer 1

Average temp previously - 50°F
Last five years have been 2° warmer
Max annual temp was reached in 2012 – 54°F

Fish that are moving into GOM as a result: loligo longfin squid, butterfish, black sea bass, summer flounder

Question 2

Estimated primary production RATE at Georges Bank

Answer 2

Note: this is N-P-Z model result. 4 g C m-2 d-1 (Franks & Chen 2001). p 235 Mann/Lazier

Question 3

Georges Bank is among the highest of any region in the world’s oceans, with annual production exceeding _____ g C m-2 yr-1

Answer 3

450 g C m^2 yr-1 in the central portion (O’Reilly et al, 1987).

Question 4

Winter nitrate concentration at Georges Bank

Answer 4

winter values of ~7 u.M NO3 (O’Reilly et al 1987)