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There has been work on the impact of vertical mgration of zooplankton on CO2
production. I don't have a complete bibliography at hand, but Alan Longhurst
was very active in this field and you may want to start with:
Longhurst, A. 1991: Role of the marine biosphere in the global carbon cycle.
Limnol. and Oceanogr., 36, 1507-1526.
Longhurst, A. 1995. Seasonal cycles of pelagic production and consumption.
Progress in Oceanography, 36, 77-167.
Longhurst, A., S. Sathyendranath, T. Platt and C. Caverhill, 1995: An
estimate of global primary production in the ocean from satellite radiometer
data. J. Plankton Res., 17, 1245-1271.

Bill Silvert

----- Original Message -----
From: "Brian Cady" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, January 18, 2004 7:40 PM
Subject: Pondering zooplankton's ecosystemic role


> Do zooplankton dive diurnally to dodge sight-hunting predators?
>
> Does daytime spatial separation of zooplankton and phytoplankton diffuse
> filter-feeder prey concentrations, reducing both plankton classe's
> predation losses?
>
> In daytime, surface CO2 fixation, with oxygen release, by
photosynthesizing
> phytoplankton, together with deepwater oxygen withdrawal, with CO2
release,
> by respiring zooplankton, must increase surface-deepwater pH gradients.
>
> What are the effects?
>
> Brian Cady

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