Question

1. Given what you know about ecological efficiency, the spatial distribution of primary production, and how food webs work, explain why: A. open ocean pelagic areas have relatively low average density (biomass per unit area or volume) of fish compared to pelagic environments closer to shore or in upwelling zones B. most large consumers in the sea (e.g. whales, large fishes like sharks or tuna) are migratory C. density of consumers is much higher at hydrothermal vents than in deep sea sediment communities distant from hydrothermal activity. D. For scenario A provide quantitative support for your explanation by calculating expected productivity at relevant trophic levels from data you can find from the lecture material or assigned readings. Show your calculations for full credit and cite the source for your data.

          1. Given what you know about ecological efficiency, the
spatial distribution of primary production, and how food webs work,
explain why:
A. open ocean pelagic areas have relatively low average density
(biomass per unit area or volume) of fish compared to pelagic
environments closer to shore or in upwelling zones
B. most large consumers in the sea (e.g. whales, large fishes
like sharks or tuna) are migratory
C. density of consumers is much higher at hydrothermal vents than
in deep sea sediment communities distant from hydrothermal
activity.
D. For scenario A provide quantitative support for your explanation
by calculating expected productivity at relevant trophic levels
from data you can find from the lecture material or assigned
readings. Show your calculations for full credit and cite the
source for your data.

Added by Joshua B.

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