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Outline. CAFÉ Workshop Update Dave: Interdecadal changes in cod/haddock growth MAB CPR Summer Plans Whales. CAFÉ Workshop Update. CAFÉ 2006, Nov. 7-8, Portland, ME 24 participants from 3 countries. CAFÉ Workshop Update. Day 1: Arctic Climate Influences on NW Atlantic

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Outline
Outline

  • CAFÉ Workshop Update

  • Dave: Interdecadal changes in cod/haddock growth

  • MAB CPR

  • Summer Plans

  • Whales


Caf workshop update
CAFÉ Workshop Update

  • CAFÉ 2006, Nov. 7-8, Portland, ME

    • 24 participants from 3 countries


Caf workshop update1
CAFÉ Workshop Update

  • Day 1: Arctic Climate Influences on NW Atlantic

    • Early & late 1990s FW anomalies

    • Good evidence early anomaly came from Arctic, likely through Canadian Archipelago

    • Late anomaly is better described in GoM/MAB, but origins are less clear

    • Contrasted GoM plankton changes with Canadian Shelf

      • Similar, but more winter-spring than fall-winter

  • Day 2: Top-down vs. Bottom-up drivers

    • Some interesting top-down linkages, but trophic cascade not supported by data

    • Cod in Newfoundland are food limited


Gulf of maine time series
Gulf of Maine Time Series

Herring

Right Whale Calves

1980

1990

2000

1980

1990

2000

Centropages typicus

Calanus

1980

1990

2000

1980

1990

2000

Phytoplankton

Salinity

1980

1990

2000

1980

1990

2000


Mid atlantic bight zooplankton
Mid Atlantic Bight Zooplankton

Centropages typicus

Calanus finmarchicus


Mid atlantic bight zooplankton1
Mid Atlantic Bight Zooplankton

  • NMFS operates two continuous plankton recorder transects

    • GoM: Boston to Yarmouth, NS

    • MAB: New York to Bermuda

  • Questions:

    • Does MAB show same 80s-90s pattern?

    • Do the same species do the same thing?


Mid atlantic bight zooplankton2
Mid Atlantic Bight Zooplankton

Centropages typicus

Paracalanus spp.

Calanus finmarchicus

Metridia lucens


First impressions

In general, strong similarities to GoM

Inverse relationship between Calanus and Ctyp

80’s vs. ‘90s

But

Different species have strongest response (Ctyp vs. Metridia)

No reversal in 2001

Some things to look at

Calanus, Calanus, Calanus

First Impressions


Summer plans

Ocean Sciences session on “Arctic influences on Atlantic ecosystems”

Continue CPR workup

Hope to expand analysis to entire shelf

1D modeling of freshwater anomalies and phytoplankton blooms

Plan for CAFÉ 2007

Summer Plans


Right whale wrong time
Right Whale, Wrong Time? ecosystems”

  • Only 350 N. Atlantic right whales

  • Recovery limited by mortality

    • Ship strikes

    • Fishing gear

  • All management options depend on knowing where whales are


Cetacean informatics

SST ecosystems”

Chl

Courtesy PCCS

Courtesy PCCS

Cetacean Informatics

Model

Data

Information

Where? When?

Model

Data

Information


Rwps 1 0
RWPS 1.0 ecosystems”

  • Climatological circulation fields, initial conditions, boundary conditions

    • No interannual variability

  • SST and Chlorophyll from 1998-2004

    • Only source of interannual variability

CCB

GSC


Whales vs model

EGOM ecosystems”

CLedg

WBas

Front

MBay

CCB

GSC

Whales vs. Model


Whales vs model1
Whales vs. Model ecosystems”


Whales vs model2
Whales vs. Model ecosystems”


Implications for globec

GLOBEC models are useful! ecosystems”

Calanus abundance reflects conditions over previous months

Even a little data is valuable

Implications for GLOBEC