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Update on the Ecological Model. Jamie Vaudrey, James Kremer (UCONN) Mark Brush (VIMS), Dave Ullman (URI) CHRP October 8, 2009. Phytoplankton. O. D. 2. N P. Processes of the model & basis for formulations: (excluding macroalgae...). Temp, Light,

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update on the ecological model

Update on the Ecological Model

Jamie Vaudrey, James Kremer (UCONN)

Mark Brush (VIMS), Dave Ullman (URI)

CHRP October 8, 2009

slide2

Phytoplankton

O

D

2

N P

Processes of the model

& basis for formulations:

(excluding macroalgae...)

Temp, Light,

Boundary Conditions

Chl, N, P, Salinity

O2 coupled

stoichiometrically

Productivity

Physics

Surface layer

- - - - - - - - -

Deep layer

- - - - - - - - -

Bottom sediment

BZI

mixing

flushing

Atmospheric

Photic zone

heterotrophy

Flux to

bottom

deposition

.

ƒ[Chl]

N

ƒ(Chl10d)

Sediment

Land-use

organics

Benthic

heterotrophy

N P

Denitri-

fication

ƒ(OM,T)

%

.

slide3

Brown, CTD Surveys

salinity

oxygen

Buoy Network

salinity

oxygen

chlorophyll

Nutrient Stations

DIN

DIP

slide16

Bay

Model

River

Area = fraction of inflow due to source

Data not final – preliminary results

slide17

Bay

Model

River

Area = fraction of inflow due to source

Data not final – preliminary results

slide19

Box 3

Current Conditions

Phytoplankton

surface

bottom

Nitrogen

N reduced 50%

surface

bottom

Oxygen

application of model results
Application of Model Results
  • Determine largest sources of input.
    • What controls the ecology in elements?
  • Additional Model Scenarios
    • Varying N input.
    • Additional ROMS runs, varying meteorological conditions.