AFS Standard Methods for Sampling & Comparing Your Data ......AFS Standard Methods for Sampling &...
Transcript of AFS Standard Methods for Sampling & Comparing Your Data ......AFS Standard Methods for Sampling &...
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AFS Standard Methods for Sampling & Comparing Your
Data With North American Standards
Fisheries Management Section
of the American Fisheries Society
Scott A. Bonar
USGS Arizona Cooperative Fish and Wildlife Research Unit, University
of Arizona, Tucson
Wayne A. Hubert
USGS Wyoming Cooperative Fish and Wildlife Research Unit,
University of Wyoming
David W. Willis
South Dakota State University (Deceased)
Toby Torrey and Matt Rahr
Web Development Group, College of Agriculture and Life Sciences,
University of Arizona
Norman Mercado Silva
Departamento de Sistemática y Ecología Acuática, El Colegio de la
Frontera Sur – Unidad Chetumal, Quintana Roo, Mexico
And Many Others!!!
Education Section
Computer User’s Section
Sponsors:
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Standardization: Collect data using the
same gear types fished in the same
manner in different waterbodies or in the
same waterbody over time.
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Why Standardize?
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Standardization has been responsible for great human progress
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Standardization of methods reduces variability in data due to
gear bias – allows comparison among water bodies and over
time
In fish studies:
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Fewer gears (with
standardization) means
easier to validate under a
wide range of conditions.
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Using well-accepted standard methods lends additional
credibility to your study
e.g., litigation, publishing results
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Metadata is much easier
to record and compare
when data is standardized
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Standardization of methods means better
communication
Membership trends for International Society of Limnology (SIL); Ecological Society of America
(ESA); American Society of Limnology and Oceanography (ASLO); North American Benthological
Society (NABS); Australian Society of Limnology. (ASL) from Likens (2004)
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Threats to aquatic life are increasingly global
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Allows
biologists to
focus on
biology and
not method
development
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Standardization has always been previously
responsible for great advances in fisheries science
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Freshwater Fish Standard Sampling
Protocols
• Examples include local,
state, regional (PNW
salmonids), national (US
EPA EMAP)
• Over 65 developed across
US and Canada alone
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Can we get a set
of protocols for
North America?
-That incorporate the best of
all these previous methods?
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In North America, Fish Communities are Often
Categorized into Two Groups for Management
Warmwater (incl. coolwater)
Species Coldwater
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Can American Fisheries Society
develop a set of standard protocols
for North America for...
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Warmwater Coldwater
Ponds (<200 ha)
Lakes (>200 ha)
Wadable Streams
Rivers
Two-story
… general fish surveys in each of nine
major waterbody types
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Fisheries Management Section
of the American Fisheries Society
• In the 1980s and 1990s- Move toward
standard sampling: FMS Fisheries
Techniques Standardization Committee
• At the 2004 National AFS Meeting, FMS
voted unanimously to support development of
a book on standard inland fish sampling
methods
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Approach
• Recognize
standardizing
sampling methods
is more of a social
science problem
than a biological
science problem.
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• “A must-read for the conservation professional”
- Ecology
• “A guidepost…should be a part of college curricula in every natural resources program”
– Mamie Parker, Assistant Director, USFWS
• “Reassuring, wise and entertaining guidance”
– Paul R. Ehrlich, Stanford University Author of “The Population Bomb”
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Therefore AFS Standard Sampling
Committee Combined Social Science
and Biological Science Techniques to
Develop AFS Standard Methods
• Most common, accepted sampling methods recommended.
• Top experts asked to author book chapters.
• A considerable number of biologists and managers contributed.
• Experts contributing represented as wide a range as possible (People similar to users, e.g. state and academics etc.)
• Most agencies in US, Canada, Mexico provided input, many provided funding.
• Methods not forced on people. However, they lose their ability to compare if don’t use.
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In Fall, 2009 – Publication of AFS Standard
Methods for Sampling North American
Freshwater Fishes
Available at: www.fisheries.org in
books section
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284 Biologists from 107 agencies or organizations
were involved in method development
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…with contributions from 10 different agencies and
organizations
Fisheries Management Section
of the American Fisheries Society
Education Section
Computer User’s Section
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So what is provided in the book?
Available at: www.fisheries.org in
books section
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Characteristic Standard
Boat Metal, 4-6 m long, 1.5-2.0 m wide
Power generator Single-phase or three-phase able to produce 230 V and 5 kW or higher
Control unit
(electrofisher)
Capable of 60 Hz pulsed DC output, high voltage, and include an amperage and voltage meter or dial rheostat
Anodes Two, suspended from booms extending forward 2.4-2.5 m from the bow; distance between foremost ends of the booms is
1.9-2.0 m; the anode array hangs from the end of the boom and is made up of six droppers equally spaced in a circle; each
dropper consists of a stainless steel cable 4.75 mm diameter and long enough to submerge 0.6-0.9 m below the water
surface
Cathode Hull of metal boat
Disconnect
(safety switch)
A foot-activated disconnect in the bow to control field activation; additional disconnects may be placed in the bow and near
the control unit
Power output 2,500-3,500 W @ 115 μS/cm ambient water conductivity (see Table 14.1 for requirements at other conductivities)
Frequency 60 Hz pulsed DC
Boat operation Operate boat at 1-3 km/h along shallow (<3 m) nearshore areas; forward progress may require meandering to parallel the
shore and to avoid obstacles, and sporadic backing up to retrieve fish and exit pockets along shore
Field activation Field activation is managed by the netter; the field is continuously activated during forward progress; deactivate to avoid
potential hazards, when backing up, or when at a standstill netting immobilized fish
Dip nets 0.6 cm mesh, 30 cm deep, and 2.4-3.0 m fiberglass handle
Netters Two; one when catch rates are low
Livewell Suitable livewell positioned behind the bow within reach of the netter(s); water is aerated to maintain high levels of oxygen
and agitated to release carbon dioxide, or at a minimum exchanged frequently
Processing fish Process fish at end of sample or stop sample to lighten an overcrowded livewell; process large fish first
Sample sites Selected randomly without replacement; number of sites dictated by desired precision and confidence, and by the random
sampling design
Effort Recorded in seconds as indicated by the control unit’s built-in timer; reported in hours
Timing Daytime; nighttime if water clarity is high (e.g., Secchi visibility > 1 m); spring when water temperatures range 13-21˚C;
avoid sampling when waters are rough or uncharacteristically turbid
Recommendations for sampling: Example NA Boat Electrofishing Standards (WW Lakes and Ponds/Rivers)
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Statistics and Data Management
Related to Standard Sampling
Complements Interpretation of Freshwater Fisheries Data, M. Brown and C. Guy, eds.
Discusses basics, including sample size determination for indices, bias, calculation of indices, trend analysis, how to set up a database etc.
Authors: Michael Quist, Kim Bonvechio and Micheal Allen
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Methods to prevent spread of
invasive species while sampling
Authors: Stewart Jacks, Steve Sharon,
Ronald Kinnunen, David Britton, Doug
Jensen, and Scott Smith
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Decontaminant Concentration Minimum Contact
Time
Iodized salt solution Saturated 30 minutes
Ethanol 50% 2 minutes or
multiple flooding
rinses
Lysol® or other
phenol-based
product
As sold 2 minutes or
multiple flooding
rinses
Chlorine bleach 10% 1 hour
Grapefruit seed
extract solution
2 tablespoons per
gallon
5 minutes
Table 1. Control measures for zebra mussels, other invertebrates (excluding New
Zealand mud snails), vertebrate eggs, and plants including algae (OWRB 2005).
Example of Control Measures Reported in Invasive Species Chapter
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Methods to convert data to
compare to standard data
Paired-Sample Regression/Correlation Methods
Authors: James T. Peterson and Craig P. Paukert
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Provide access to comparison data
Authors: Mark Brouder, Alison Iles, and Scott Bonar
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What is happening now with the AFS
Standard Methods?
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Methods being
adopted around
North America
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However, one barrier:
What can we do with
long term data sets
collected using
different methods?
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Options
• You might already being
using AFS standard
sampling.
• Consider retaining long-
term sampling methods in
specific waters and
standardizing with AFS in
other waters.
• Convert data to AFS
standards using Peterson
and Paukert methods or
other techniques.
• Switch to AFS standards
depending on situation.
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There are different levels of
standardization – any move toward
standardization is an improvement
No Standarization Complete Standardization
Ease of DataComparison
Variability in Data Dueto Sampling TechniqueDifferences
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Ongoing work now in at least 8
states and provinces in method
validation and calibration
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Lead Programmers:
Toby Torrey and Matt Rahr – UA
Educational Communications and
Technologies
Averil Cate – UA Advanced Resource
Technology Laboratory
Norman Mercado Silva and Scott
Bonar – USGS AZ Cooperative Fish
and Wildlife Research Unit
Web-Based Standard Data Comparison Tool
Sponsors:
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Kenneth Carlander’s Handbooks of Freshwater Fishery Biology 1969-1997
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2006 National Fisheries
Data Summit (US)
Data sharing should start
small and show
accomplishments.
Prototype and pilot efforts
encouraged.
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Lead Programmers:
Toby Torrey and Matt Rahr – UA
Educational Communications and
Technologies
Averil Cate – UA Advanced Resource
Technology Laboratory
Norman Mercado Silva and Scott
Bonar – USGS AZ Cooperative Fish
and Wildlife Research Unit
Web-Based Standard Data Comparison Tool
Sponsors:
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www.fisheriesstandardsampling.org
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Objectives of a Standard
Sampling Website/Database • For comparison of data collected using AFS
standard methods only.
• Compares results of individual water body
survey to continental/regional/state averages
and percentiles of CPUE, length-frequency,
condition and growth.
• Continually builds on itself – entered data
incorporated into summaries (Crowd Sourcing).
• Designed to be as simple as possible – no “bells
and whistles”
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Objectives of Website/Database
(continued) • Option to connect to larger databases
containing standard and non-standard
data.
• Allows comments on the AFS standard
methods; explains the value of standard
methods; current validation/calibration
research on methods also discussed.
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1) Choose water body and
standard survey type
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2) Locate and click
on water body
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3) Location, State/Province,
Country, Ecoregion, HUC,
Lat/Long fields automatically
populated
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4) Upload Simple Data
File From Survey
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5) Get Results – (Comparison of your
CPUE, Length Frequency, Condition and
Growth with Continent, Regional, and
State Summaries)
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5) Get Results
(continued) – (Comparison of your CPUE, Length
Frequency, Condition and Growth with
Continent, Regional, and State
Summaries)
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Specifics to
stream and
river
sampling
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AFS Standardized Flowing Water Sampling Methods
(Discussed in detail in book)
Method Water Body Type Effort Reported in:
Boat Electrofisher Rivers Fish/hr. – and where possible
Fish/100 m2
Raft Electrofisher Rivers
Fish/hr. – and where possible
Fish/100 m2
Drifting Trammel Net Rivers Fish per 100 m drift
Bag Seine Rivers Fish per quarter seine haul
Small Hoop Net Rivers Fish per 24 hr set
Large Hoop Net Rivers Fish per 24 hr set
Buffalo Net Rivers Fish per 24 hr set
Small Mesh Benthic Trawl Rivers Fish/min
Large Mesh Benthic Trawl Rivers Fish/min
Backpack Electrofisher Wadable Streams Fish/100 m2
Tow Barge Electrofisher Wadable Streams Fish/100 m2
Stream Seine Wadable Streams Fish/Haul
Redd Counts Wadable Streams Redds/100 m2
Snorkeling Rivers and Wadable Streams Fish/100 m2
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www.fisheriesstandardsampling.org
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5) Get Results
(continued) – (Comparison of your CPUE, Length
Frequency, Condition and Growth with
Continent, Regional, and State
Summaries)
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River and stream surveys loaded into
sampling webtool (as of 1/15)
Fish Type Water Body Type Number of
Surveys to
Date
Warmwater Fish Wadeable Streams 80
Warmwater Fish Rivers 180
Coldwater Fish Wadeable Streams 582
Coldwater Fish Rivers 100
TOTAL RECORDS 942
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In Summary
• Standardization of methods has been
responsible for considerable human
progress in many fields including fisheries.
• Standardization at increasingly larger
scales will be important to meet the needs
of the future.
• Standardization has clear benefits to
individual managers and researchers.
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Future Needs:
• Continue to educate potential users about
benefits of standardizing on a large scale
• Continue to improve tools to validate,
compare, and analyze standard data
• Fine tune process within AFS for moving
forward
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International Standard Sampling Symposium at
2015 AFS Annual Meeting in Portland Oregon
• Plan to Attend! Contact any member of Planning
Committee for further questions: • Dr. Scott A. Bonar –Leader and Professor, USGS Arizona Cooperative Fish and Wildlife Research
Unit (Past President Western Division AFS; Chair, AFS Fish Management Section Standard
Sampling Committee)
• Dr. Wayne A. Hubert – Professor Emeritus, Department of Zoology and Physiology, University of
Wyoming (Past President AFS)
• Dr. Norman Mercado Silva – Professor, Centro Universitario de la Costa Sur, Universidad de
Guadalajara, Mexico
• Dr. T. Douglas Beard, Jr., Chief, USGS National Climate Change & Wildlife Science Center,
Reston, VA
• Dr. Göran Dave, Professor, Department of Biology and Environmental Sciences, Göteborg
University, Göteborg, Sweden (Chair Swedish Standards Committee)
• Prof. Dr. Jan Kubečka, Professor, Hydrobiologický ústav (Institute of Hydrobiology) Biologické
centrum (Biology Centre) České Budějovice, Czech Republic
• Dr. Nigel Lester – Research Scientist, Aquatic Research and Development Section, Ontario
Ministry of Natural Resources
• Dr. Ian J Winfield - Lake Ecosystems Group, Centre for Ecology & Hydrology, Lancaster
Environment Centre, U.K.; (Past President of the Fisheries Society of the British Isles)
• Dr. Brian Graeb – Department of Natural Resource Management, South Dakota State University
• Mr. Mark Porath, Nebraska Game and Parks Commission
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284 Biologists from 107 agencies or organizations
were involved in method development
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…with contributions from 10 different agencies and
organizations
Fisheries Management Section
of the American Fisheries Society
Education Section
Computer User’s Section