Ocean Recreational Boat Survey ORBS Eric Schindler, Project Leader Marine Resources Program Oregon D

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Ocean Recreational Boat Survey
(ORBS)Eric Schindler, Project LeaderMarine
Resources ProgramOregon Dept. of Fish Wildlife
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Overview

• Data elements collected include
• Total boats by type (from exit counts or charter
  offices)
• Number of anglers per boat (from interviews)
• Retained catch (from interviews)
• Released catch (from interviews)
• Trip type for target species or species groups
• CWT sampling of salmon (from interviews)
• Length and weight sampling (from interviews
  and/or supplemental bio-sampling)
• Trip information on departure time, return time,
  and total length of trip
• Areas fished

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Oregon Ocean Fishery Character

• Most anglers leave early morning and return
  mid-day due to weather patterns of the Oregon
  Coast.
• Historically salmon has been target
  species,and salmon is still most popular making
  up 50-70 of the total angler trips in each of
  the last 5 years.
• Charter anglers
• 10-20 of the salmon effort
• 30-40 of the Pacific halibut effort
• 60-70 of the bottomfishing effort.
• Private boat anglers
• 80-90 of the salmon effort
• 60-70 of the Pacific halibut effort
• 30-40 of the bottomfishing effort

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Oregon Ocean Fishery Character

• Moorage and launch sites are nearly all public
  access. The few private sites also allow access
  for sampling.
• Important state laws
• No filleting at sea allowed
• Sampling is supported anglers must comply with
  the directions of ODFW staff, show all catch, and
  allow tag recovery and bio-sampling

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Fisheries and Objectives

• Ocean Salmon
• Accurate and timely effort and catch
  estimates by port, catch area, week, and
  boat type
• Quotas in effect for many seasons
• Adequate sampling for coded-wire tags
  (gt20 required by week).

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Fisheries and Objectives

• Pacific Halibut
• Accurate and timely effort and catch estimates
  (quotas) by port, catch area, season type, week,
  and boat type.
• Lengths are recorded for estimation of biomass of
  landings.

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Fisheries and Objectives

• Bottomfish (Rockfish, Lingcod, Cabezon, etc.)
• Accurate and timely effort and catch estimates by
  port, reef location, week, and boat type.
• Harvest caps in place for numerous species.
• Biological sampling Age structures for select
  species and length/weight collection all species.
  Additional at-sea observations of released fish
  are collected.

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Oregon Ocean Fishery Access Points and Salmon
Management Areas
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Ocean Recreational Boat Survey - Historical
Timeline
79 81 83 85 87
89 91 93 95 97
99 01 03 05
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Project Structure

• Two biologists oversee project
• One project leader oversees data services
  including processing of data and handheld
  software development
• One data support position currently handles data
  entry
• Two crew leaders assist in field supervision and
  transfer of data
• Seasonal staffing includes
• Port samplers 23 (131 months)
• At sea selective salmon observers 2 (5 months)
• Data support 1 (7 months)

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Methodology Effort

• Private boats (1) Bar crossing count dawn to
  1000 AM in most ports, with expansion for trips
  leaving outside of count (used in Astoria,
  Garibaldi, Newport, Winchester Bay, Charleston,
  and Brookings).
• Private boats (2) Initial trailer and moorage
  slip count, and track additional launches through
  day (used in Pacific City, Depoe Bay, Florence,
  Bandon, Port Orford, and Gold Beach).
• Charter boats Contact charter offices for
  tally of trips by target species. Cross
  referenced to bar crossing counts.

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Methodology Interviews

• Private boats randomly interviewed throughout the
  major moorage and launch sites.
• Charter boats interviewed usually with prior
  knowledge of trip type. Sampling conducted
  without regard to vessel size or passenger load.
  
• Boats interviewed only at the end of their trips,
  all catch and anglers on a boat are included in a
  single interview.

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Methodology Interviews

• Data elements of each interview
• Header info Sampler ID, date, and port.
• Trip info Catch area, major reef area
  (bottomfish trips only), departure time,
  interview time, boat license or name, and number
  of anglers.
• Stratification info
• Fishery (O/E) collect data for both, estimates
  only for ocean
• Boat type (C/P) target species may vary
  significantly
• Trip type (S/C/B/H/T/D/N)
• Catch info Number of fish retained by species,
  released fish by species, CWTs recovered,
  length/weight on most species, and lengths for
  Pacific halibut.

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Stratification of Data

• Weekly - Highly variable seasons require narrow
  time frame for estimates also sampling rates can
  vary over the year
• Season Type Pulse fisheries like the deepwater
  halibut season (often Thurs-Sat) require further
  stratification beyond week level

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Stratification of Data
Port of LandingSampling rates can be highly
variable between ports with a range of 20 to
60. Character of ports are also very different.
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Effort Expansion Factors
Effort (boats) expansion calculation for private
boat trips outside theeffort count (typically
500-1000 AM) Et ____Es___ Ec
(Es Eo)Where Et Total effort
of private boats Es Number of private boats
sampled Eo Number of private boats sampled
outside of count Ec Bar crossing count of
private boats An additional 4 expansion is made
to all effort as recommended the RecFIN
Statistical Committee to account for late PM
trips. Further expansions are also made for
unsampled time periods and ports.
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Formulas and Expansion Factors
Algorithm for calculating fishery parameters from
sample data Pt ____Ps___
(Es / Et)Where Pt Total estimated
parameter by stratification Ps Sampled units
within parameter (anglers, fish retained, fish
released), stratified by private boat trip
type and by area of catch Es Sampled effort in
number of boats by strata Et Total effort in
number of boats by strata (port, week, season
type, and charter trip type Final
catch and effort estimates are made by summing
across strata.
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Products and Timelines

• Catch and effort data
• In-season preliminary catch and effort estimates
  available within four days after the end of the
  week.
• Completed monthly estimates for in-season upload
  to RecFIN available within 2-4 weeks of the end
  of month.
• Finalized data set available by mid-January.
• Coded Wire Tags
• Preliminary completed by mid-January following
  the season.
• Finalized data set available by end of year
  following season.

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Issues

• Risks
• Budgets Project funded through various
  contracts and many of these contracts have eroded
  or been static in the face of increasing costs.
  This has resulted in both lost sampling positions
  and project flexibility.
• Variance Estimates

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