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Oregon State University researcher Francis Chan's 2010-2012 research project for Oregon Sea Grant
Citation preview
Drivers of ecosystem resilience: toward a predictive
understanding of hypoxia’s impact on nearshore fisheries and ecological communities
Francis Chan (PI), Kristen Milligan (co-PI), Mike Donnellan (co-PI)
Oregon Sea Grant All-Hands MeetingFebruary 17, 2010Corvallis Oregon
Motivation• Seasonal hypoxia in the nearshore is the “new normal”
• Region-wide phenomenon with strong spatial patterns
• Important pathway for climate-ecosystem impacts
• Strong public desire for information (opportunity for engaging the public on ocean issues)
• Understanding of ecological and fishery impacts limited
1950 to 1999: severe hypoxia rare, no sign of anoxia
2000 to 2005: Increase severity and prevalence of hypoxia
2006: Appearance of anoxia
Dissolved oxygen (ml l-1)
Dep
th (
m)
An ecosystem in transition?
Hypoxia is a regional-scale phenomenon
2007 NOAA FRAM, NW Fisheries Science Center Hake Survey on the Miller Freeman. S. Pierce and J. Barth
May Jun Jul Aug
OCNMS
100m
50m
Apr May Jun Jul Aug
Depth
(m
)D
epth
(m
)0
50
0
50
76543210
76543210
DO
(ml l -1)
DO
(ml l -1)
Newport
AB
C
Apr May Jun Jul Aug
But exhibits important and persistent meso-scale variability
Ann. Rev. Mar. Sci 2010
Global Change Biology 2009
Schmittner et al. Global Biogeo. Cycles 2008
current future
f
e
d
ca
b
Pre-anoxia Anoxia
Grantham et al. 2004
Hypoxia/anoxia have acute ecological and fishery impacts
Our understanding of potential fishery impacts are only now emerging
As is our understanding of ecological resilience
DATA: Gayle Murphy (OSU)
Science ObjectivesGoal 1: Develop functional response relationship between declining oxygen values and biological and fishery impacts
Goal 2: Test the influence of community and habitat attributes on ecological resilience
SH • Floren
ce
• Newport
Approaches:1)ROV surveys2)Syntheses of
oceanographic and fishery time-series
Outreach ObjectivesGoal 1: Enhance scientific research across disciplines
Goal 2: Enhance understanding for the general public and specific stakeholder groups (fishermen, resource managers…)
2001 2002 2003 2004 2005 2006 2007 2008 2009
LTOP
COAST
PISCO
NOAA (Bill)
Jack/Kipp Glider
NOAA (FRAM)
MI_LOCO
Lorenzo
NOAA/Pierce (Hake)
Burke Hales
Kipp/Jeremy (crab pots)
Clare Riemers
Central Oregon hypoxia-related research
OrCOOS
Meetings and workshops:• Research exchanges (spring, fall each year)• Scoping meetings with fishing community members to
identify informational needs & knowledge exchange
Data management and products for management:• Work with PISCO Marine Ecosystem Data Manager and
ODFW to determine appropriate metadata for new surveys and data archival
• Tailored derived data products for management
Training and mentoring:• Students will be closely involved with developing
outreach plans and data analysis
Approaches
Outreach materials
Consortium of scientists:• OSU• UC Santa Cruz• Stanford• UC Santa Barbara
I. What is PISCO? Overview
Goals:• understand key dynamics of coastal ocean ecosystem along U.S. West Coast
• produce new generation of scientists trained in interdisciplinary approaches
• share knowledge for science-based decisions
Hypoxia in Pacific NWstate & federalpolicy:
• Oregon Ocean Policy Advisory Council (Aug ’06)• Dead Zone briefing for Oregon Congresswoman Darlene Hooley (Oct ’06)• Testify before U.S. House Select Committee on
Energy Dependence and Global Climate Change (Apr ’08)• Oregon House Committee on Energy and the Environment (Apr ’08)• West Coast Governors Agreement on Ocean
Health Executive Committee (Nov ’08)
1950 to 1999: severe hypoxia rare, no sign of anoxia
2000 to 2005: Increase severity and prevalence of hypoxia
Dissolved oxygen (ml l-1)
Dep
th (
m)
An ecosystem in transition?
1950 to 1999: severe hypoxia rare, no sign of anoxia
Dissolved oxygen (ml l-1)
Dep
th (
m)
Chan et al. Science 2008
An ecosystem in transition?