NAB Planning area Bristol Bay/Alaska Peninsula Avian Crossroads and Destination Bill Larned Chris...
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Transcript of NAB Planning area Bristol Bay/Alaska Peninsula Avian Crossroads and Destination Bill Larned Chris...
NABPlanning area
Bristol Bay/Alaska PeninsulaAvian Crossroads and Destination
Bill LarnedChris DauU S Fish and Wildlife Service
Nutrient-rich estuaries
Eelgrass, anadromous and marine fish & invertebrate food resources Extensive shallow near-shore habitats
Northernmost ice-free coastal habitats in winter
Remote habitats with low level human disturbance
BRISTOL BAY
Why are there so many birds here?
Bob Gill
Special Habitat Designations
• 23 Bering Sea “Important Bird Areas”• 6 Hemispheric, 1 International “Western Hemispheric
Shorebird Reserve Network” sites• 5 State Critical Habitat Areas “essential for wildlife and
fisheries resources”• 3 Fed. Steller’s eider critical habitat units within PA, 2 in
adjacent areas, 1 Spectacled eider C Hab. adjacent• 2 National Wildlife Refuges• 2 State Game Refuges• 1st Ramsar Convention Site (Izembek Lagoon) in US
“Wetlands of International Importance”
WATERBIRDS MOST AT RISK
• Sea Ducks: Steller’s eider, King eider, Black Scoter Long-tailed duck,
• Geese: Brant, Emperor goose, Cackling Canada goose
• Other dabbling/diving/sea ducks, loons, grebes, gulls in estuaries and along shorelines esp. during spring/fall migration
Data Sources
• FWS Aerial Surveys – Spring Staging, Winter, Molting, Fall Staging, including: sea ducks, other diving ducks, dabbling ducks, geese, loons, grebes, gulls, eagles
• Many estuarine studies (marine ecology, abundance, biology, disturbance factors of waterbirds)
• Radiotelemetry – VHF and Satellite
P. Anderson
L. Dickson
Steller’s eider
• Status: AK breeding pop. “threatened” under ESA, world pop. of concern.
• Reference Population: Pacific Population (<200K)• Planning area Max Population: 137K• PA % of Ref. Population: ±70%• Months present: Aug-May• Concentration sites: All major AK Pen. Lagoons,
Chagvan, Nanvak, Goodnews, Kuskokwim Bays, Aug. – May. Molting, migration, winter
Suydam
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
March-May AndAug.-Nov.
STELLER’S EIDER
R. Suydam
W. Larned
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
Dec-Mar
STELLER’S EIDER
R. Suydam
King eider
• Status: Species of Concern, worldwide decline.• Reference Population: W. N. Am. (<300-400K)• Planning area Max Population: 240K (mid-Apr. 1997)• PA % of Ref. Population: ±70%• Months present: Aug - May• Concentration sites: Upper BB shoals, mouths of all AP
Lagoons, shorelines throughout Planning area
M. Danzenbaker
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
KING EIDER
R. Suydam
Mar-May
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
KING EIDER
Sept-Nov
??
??
??
??
??
Dec-Mar
Black Scoter
• Status: Species of Concern, declines worldwide Incl. AK• Reference Population: W. N. Am. breeding (200K)• Planning area Max Population: Spring Mig. (48K)• PA % of Ref. Population: 24%• Months present: Aug-May• Greatest Vulnerability: migration (Mar-May), Molt (Aug-
Oct). Upper BB shoals, Most AP Lagoons, esp. Pt. Moller, shorelines throughout Planning area
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
BLACK SCOTER
March-May
J. Wasley
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
BLACK SCOTER
July-Nov
Winter ??
J. Wasley
Sea Ducks - vulnerability
• Molting flocks – high nutritional requirements, limited mobility, stress from disturbance
• Migration bottlenecks: many birds transition through staging areas, max numbers exposed to oil/fuel spills, other contaminants, disturbance
• Wintering concentrations – spill response most challenging
DATA GAPS
• Baseline food resource quant/qual data from major coastal/estuarine habitats (prey density, distribution, competitors, contaminants)
• Year-round distribution of sea ducks -- especially winter distribution.
• Relationships of seasonal waterbird distribution & migration to environmental variables, esp. sea ice, weather, prey distribution/abundance, disturbance
Pacific Brant
• Status: International Species of concern due to ~40% reduction in population
• Reference Population: Pacific Coast and High Arctic, breeds in AK, Canada, Russia: ~120K
• NAB Planning area Max Population: >95%• Months present: Sept-May• Concentration sites: Izembek Lagoons,
Bechevin, Chagvan, Nanvak Bays, Sept-Nov, April-May
J. Wasley
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
PACIFIC BRANT
April-May Sept-Nov
J. Wasley
Emperor Goose
• Status: Int. Species of concern due to ~50% pop. reduction
• Reference Population: Entire world population (~80K) is in W. Alaska & Russia
• % of Ref. Population in NAB: ~95%• Months present: Sept-May• Concentration sites: All AP estuaries, Bechevin,
Chagvan, Nanvak Bays
Nunivak I.
Kuskokwim Bay
Kuskokwim River
Goodnews Bay
Chagvan Bay
Nanvak Bay
Togiak
Nushagak Bay
DillinghamÊÚÊÚ
Kvichak Bay
BRISTOL BAY
KingSalmon
Egegik Bay
Ugashik Bay
Cinder R.Lagoon
Naknek R.
ÊÚ
PortHeiden
Seal Islands Lagoon
Port Moller
NelsonLagoon
IzembekLagoon
ColdBay
FalsePass
N. A
leutian Plann
ing Unit
Kvichak R.
50 0 50 100 Kilometers N
EMPEROR GOOSE
April-May
T. Donnelly
Aug-Nov