Monitoring of Great Basin Redband Trout 6 Year Pilot Study ODFW Native Fish Investigations Project.
Download ReportTranscript Monitoring of Great Basin Redband Trout 6 Year Pilot Study ODFW Native Fish Investigations Project.
Slide 1
Monitoring of Great
Basin Redband Trout
6 Year Pilot Study
ODFW
Native Fish Investigations Project
Slide 2
Motives
To address data gaps outlined in the Native Fish Status
Review (ODFW 2005).
To provide better management for future fishing
opportunities.
To write effective conservation plans for all Great Basin
SMUs.
To assess the response of fish populations to changes in
climatic conditions.
Slide 3
Objective
To design and test a sample strategy capable of
assessing status and trends of redband trout at the
SMU and population scales.
Slide 4
Project Scope
Malheur Lakes
Fort Rock
Malheur Lakes
Fort Rock
Chewaucan
Warner Lakes
Catlow Valley
Goose Lake
Chewaucan
SMUs = Six interior
basins of the Great
Basin
Warner Lakes
Catlow Valley
Goose Lake
Slide 5
Project Scope
Malheur Lakes
Fort Rock
Malheur Lakes
Fort Rock
Chewaucan
Warner Lakes
Catlow Valley
Goose Lake
Populations = groups of
fish potentially able to
reproduce in the same
place and same time.
Chewaucan
Warner Lakes
Goose Lake
Catlow Valley
Slide 6
Methods
!(
!(
!(
!(
!(
!(
!(
Select sample sites
throughout the potential
distribution of redband
trout using EMAP protocol.
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
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30 sites in each SMU every
year.
30 sites in each of 8
populations. Each
population sampled every 3
years.
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!(
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Slide 7
Land Ownership of Great Basin
Redband Trout Habitat
Legend
Redband Trout Populations Land Ownership
Land Ownseship
BLM
ODF
PVT
USFS
USFWS
0
20
40
80 Kilometers
Malheur Lakes
Fort Rock
Chewaucan
Warner Lakes
Catlow Valley
Goose Lake
Slide 8
Methods
Conduct 2-pass removal density estimates at each site
using electrofishing techniques.
Calibrate removal estimates by also conducting markrecapture estimates at a portion of sites.
Collect stream habitat data at each site
Slide 9
Analysis
Generate estimates of redband trout parameters at SMU
and populations scales using EMAP statistical
algorithms.
Abundance
Distribution
Size-age composition
Degree of uncertainty
Time series trends
Fish-habitat relationships
Effects of climate variation
Slide 10
Annual Budget
USFWS – SFR
ODFW
Miscellaneous
$164,700
$20,000
$10,000
Total
$194,700
Monitoring of Great
Basin Redband Trout
6 Year Pilot Study
ODFW
Native Fish Investigations Project
Slide 2
Motives
To address data gaps outlined in the Native Fish Status
Review (ODFW 2005).
To provide better management for future fishing
opportunities.
To write effective conservation plans for all Great Basin
SMUs.
To assess the response of fish populations to changes in
climatic conditions.
Slide 3
Objective
To design and test a sample strategy capable of
assessing status and trends of redband trout at the
SMU and population scales.
Slide 4
Project Scope
Malheur Lakes
Fort Rock
Malheur Lakes
Fort Rock
Chewaucan
Warner Lakes
Catlow Valley
Goose Lake
Chewaucan
SMUs = Six interior
basins of the Great
Basin
Warner Lakes
Catlow Valley
Goose Lake
Slide 5
Project Scope
Malheur Lakes
Fort Rock
Malheur Lakes
Fort Rock
Chewaucan
Warner Lakes
Catlow Valley
Goose Lake
Populations = groups of
fish potentially able to
reproduce in the same
place and same time.
Chewaucan
Warner Lakes
Goose Lake
Catlow Valley
Slide 6
Methods
!(
!(
!(
!(
!(
!(
!(
Select sample sites
throughout the potential
distribution of redband
trout using EMAP protocol.
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
30 sites in each SMU every
year.
30 sites in each of 8
populations. Each
population sampled every 3
years.
!(
!(
!(
!(
!(
!(
!(
!(
!(
(!
!(
!(
!
(
!( (! !(
!( !(
(
!
!(
!(
!( !(!( !(
!( !( !(
!(
!( !( !(
!( !(
!( !(
!(
!(
Slide 7
Land Ownership of Great Basin
Redband Trout Habitat
Legend
Redband Trout Populations Land Ownership
Land Ownseship
BLM
ODF
PVT
USFS
USFWS
0
20
40
80 Kilometers
Malheur Lakes
Fort Rock
Chewaucan
Warner Lakes
Catlow Valley
Goose Lake
Slide 8
Methods
Conduct 2-pass removal density estimates at each site
using electrofishing techniques.
Calibrate removal estimates by also conducting markrecapture estimates at a portion of sites.
Collect stream habitat data at each site
Slide 9
Analysis
Generate estimates of redband trout parameters at SMU
and populations scales using EMAP statistical
algorithms.
Abundance
Distribution
Size-age composition
Degree of uncertainty
Time series trends
Fish-habitat relationships
Effects of climate variation
Slide 10
Annual Budget
USFWS – SFR
ODFW
Miscellaneous
$164,700
$20,000
$10,000
Total
$194,700