building strong ® portland district 1 inland avian predation fish field unit nathan zorich fpom...
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BUILDING STRONG®PORTLAND DISTRICT 1
Inland Avian Predation
Fish Field Unit
Nathan Zorich
FPOM Avian Update McNary emphasis
September 13, 2012
Charlie Moores
Tim Avery Mike Baird
BUILDING STRONG®PORTLAND DISTRICT 2
Fish eating bird colonies
(Roby, Collis et al. 2011)
BUILDING STRONG®PORTLAND DISTRICT 3
USACE Avian Management
Estuary In-land
BUILDING STRONG®PORTLAND DISTRICT 4
BiOp requirements
Smolt survival 96% Spring & 93% Summer Inland Avian Reasonable & Prudent Alternatives
47. Manage avian predators on Corps lands
48. Continue deterrents at dams
68. Monitor avian predators & smolt impacts
NeedsDeterrent evaluation
Long term monitoring
Prioritize avian deterrent spending
BUILDING STRONG®PORTLAND DISTRICT 5
Long Term Monitoring: Counts
BUILDING STRONG®PORTLAND DISTRICT 6
Focused Monitoring : Fish Consumption
Source: multiple: FFU studies
BUILDING STRONG®PORTLAND DISTRICT 7
Deterrent: Funding Hazing
BUILDING STRONG®PORTLAND DISTRICT 8
Monitoring: Standardization
BUILDING STRONG®PORTLAND DISTRICT 9
Monitoring: Data collectionData entries to On-line Portal
as of 2012-09-11
Lower Granite
Little Goose
Lower Monumental
Ice Harbor
McNary
John Day
The Dalles
Bonneville
Apr May Jun Jul Aug Sep
BUILDING STRONG®PORTLAND DISTRICT 10
Monitoring: Analysis & Reporting
BUILDING STRONG®PORTLAND DISTRICT 11
BUILDING STRONG®PORTLAND DISTRICT 12
Me
an
Da
ily C
ou
nt (
fora
gin
g )
0100200
BonnevilleCaspian Tern
Apr May Jun Jul Aug Sep
Ice HarborCaspian Tern
The DallesCaspian Tern
0100200
Lower MonumentalCaspian Tern
0100200
John DayCaspian Tern
Little GooseCaspian Tern
Apr May Jun Jul Aug Sep
McNaryCaspian Tern
0100200
Lower GraniteCaspian Tern
BUILDING STRONG®PORTLAND DISTRICT 13
Me
an
Da
ily C
ou
nt (
fora
gin
g )
0100200
BonnevilleGull
Apr May Jun Jul Aug Sep
Ice HarborGull
The DallesGull
0100200
Lower MonumentalGull
0100200
John DayGull
Little GooseGull
Apr May Jun Jul Aug Sep
McNaryGull
0100200
Lower GraniteGull
Foraging Gulls 2012
BUILDING STRONG®PORTLAND DISTRICT 14
McNary Dam
BUILDING STRONG®PORTLAND DISTRICT 15
McNary 2012
BUILDING STRONG®PORTLAND DISTRICT 16
McNary 2012
BUILDING STRONG®PORTLAND DISTRICT 17
BUILDING STRONG®PORTLAND DISTRICT 18
John Day Gulls 2009
BUILDING STRONG®PORTLAND DISTRICT 19
John Day Gulls 2010
BUILDING STRONG®PORTLAND DISTRICT 20
John Day Dam 2009*
*Daily mean gull count n = 99 One dot = one gull
BUILDING STRONG®PORTLAND DISTRICT 21
John Day Dam 2010*
*Daily mean gull count n = 17 One dot = one gull
BUILDING STRONG®PORTLAND DISTRICT 22
John Day Gulls 2011
BUILDING STRONG®PORTLAND DISTRICT 23
Gull Counts April – July (foraging gulls / day)
*April – 20 May 2010
BUILDING STRONG®PORTLAND DISTRICT 24
JFOF Approximate
BUILDING STRONG®PORTLAND DISTRICT 25
Concerns from Project Biologist Region wants current hazing or more
► Unsustainable under O&M budget forecast► Benefits hazing vs. political reality?
• JD Consumption:
6k (0.02%) of 31 M smolt in 2011
38k (0.27%) of 40 M smolt in 2010(Zorich et al. 2011)
Maintenance cost of extensive line array JD► $6 M to build, 125 synthetic lines 3,000 ft. long► Maintenance will increase as lines age and fail
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