ASTM E1199-87(2012)

Standard Practice for Sampling Zooplankton with a Clarke-Bumpus Plankton Sampler

SIGNIFICANCE AND USE
4.1 The advantages of the Clarke-Bumpus plankton sampler are as follows:  
4.1.1 It will sample a discrete depth or multiple depths, depending upon the sampling design.  
4.1.2 It is a slow to medium speed sampler requiring a towing speed of three to five knots.  
4.1.3 The sample size can be easily controlled.  
4.1.4 The sampler is lightweight and can be used without auxiliary equipment.  
4.1.5 It has a relatively high filtration efficiency factor of 0.88.  
4.1.6 It is a versatile sampler and can be used in all but the shallowest waters.  
4.1.7 The flowmeter records the amount of water that passes into the net.  
4.1.8 Overspill of water at the mouth of the net due to excess speed of towing is of minimal consequence.  
4.2 The disadvantages of the Clarke-Bumpus plankton sampler are as follows:  
4.2.1 The flowmeter requires frequent maintenance including calibration and lubrication.  
4.2.2 It is not suitable for use in very small areas or shallow waters.  
4.3 There are several special considerations that shall be observed when using a Clarke-Bumpus sampler. They are:  
4.3.1 The flowmeter should be calibrated and serviced frequently to ensure efficient and accurate operation.  
4.3.2 The sampler is relatively fragile, particularly the closing device and flowmeter. This necessitates careful deployment and recovery procedures.  
4.3.3 Following each collection, the net must be thoroughly washed.  
4.3.4 Special attention must be given to the strength of the cable and its attachment to avoid loss of the sampler.  
4.3.5 The sampler should not be used in beds of macrophytes, in waters containing submerged objects, or close to the bottom.  
4.3.6 The net should be inspected frequently for pin-size holes, tears, net deterioration, and other anomalies.  
4.3.7 Following use, the wet net should be suspended full length in the air in subdued light and allowed to dry.
SCOPE
1.1 This practice covers the procedures for obtaining quantitative samples of a zooplankton community by use of a Clarke-Bumpus plankton sampler.  
1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Nov-2012
• ICS: 13.060.30 - Sewage water
• Technical Committee: D19 - Water
• Drafting Committee: D19.24 - Water Microbiology

Relations

• Replaced By: ASTM E1199-19 - Standard Practice for Sampling Zooplankton with a Clarke-Bumpus Plankton Sampler
• Effective Date: 01-Apr-2019

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1199 − 87 (Reapproved 2012)
Standard Practice for
Sampling Zooplankton with a Clarke-Bumpus Plankton
Sampler
This standard is issued under the fixed designation E1199; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4.1.5 It has a relatively high filtration efficiency factor of
0.88.
1.1 This practice covers the procedures for obtaining quan-
4.1.6 It is a versatile sampler and can be used in all but the
titative samples of a zooplankton community by use of a
shallowest waters.
Clarke-Bumpus plankton sampler.
4.1.7 Theflowmeterrecordstheamountofwaterthatpasses
1.2 This standard does not purport to address all of the
into the net.
safety problems, if any, associated with its use. It is the
4.1.8 Overspill of water at the mouth of the net due to
responsibility of the user of this standard to establish appro-
excess speed of towing is of minimal consequence.
priate safety and health practices and determine the applica-
4.2 ThedisadvantagesoftheClarke-Bumpusplanktonsam-
bility of regulatory limitations prior to use.
pler are as follows:
2. Referenced Documents 4.2.1 The flowmeter requires frequent maintenance includ-
ing calibration and lubrication.
2.1 ASTM Standards:
4.2.2 It is not suitable for use in very small areas or shallow
D4134 Practice for Sampling Phytoplankton with a Clarke-
waters.
Bumpus Plankton Sampler
E1200 Practice for Preserving Zooplankton Samples 4.3 There are several special considerations that shall be
observed when using a Clarke-Bumpus sampler. They are:
3. Summary of Practice
4.3.1 The flowmeter should be calibrated and serviced
frequently to ensure efficient and accurate operation.
3.1 The sampler is towed from a moving boat at a specified
4.3.2 The sampler is relatively fragile, particularly the
depth. The sampler uses a net for the collection and concen-
closing device and flowmeter.This necessitates careful deploy-
trationofzooplankton.Theactualvolumeofwaterenteringthe
ment and recovery procedures.
sampler is measured by a calibrated flowmeter. The zooplank-
4.3.3 Following each collection, the net must be thoroughly
ton are preserved as dictated by the objectives of the study.
washed.
4. Significance and Use 4.3.4 Special attention must be given to the strength of the
cable and its attachment to avoid loss of the sampler.
4.1 TheadvantagesoftheClarke-Bumpusplanktonsampler
4.3.5 The sampler should not be used in beds of
are as follows:
macrophytes, in waters containing submerged objects, or close
4.1.1 It will sample a discrete depth or multiple depths,
to the bottom.
depending upon the sampling design.
4.3.6 The net should be inspected frequently for pin-size
4.1.2 It is a slow to medium speed sampler requiring a
holes, tears, net deterioration, and other anomalies.
towing speed of three to five knots.
4.3.7 Following use, the wet net should be suspended full
4.1.3 The sample size can be easily controlled.
length in the air in subdued light and allowed to dry.
4.1.4 The sampler is lightweight and can be used without
auxiliary equipment.
5. Apparatus
5.1 The Clarke-Bumpus zooplankton sampler is a 5-in.
This practice is under the jurisdiction of ASTM Committee D19 on Water and
diameter by 6-in. long brass tube consisting of a metal frame in
is the direct responsibility of Subcommittee D19.24 on Water Microbiology.
which an interchangeable conical plankton net is attached at
Current edition approved Dec. 1, 2012. Published December 2012. Originally
the mouth and at the cod end. This sampler is available in
approved in 1987. Last previous edition approved in 2004 as E1199 – 87 (2004).
DOI: 10.1520/E1199-87R12.
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