1982
DOI: 10.4319/lo.1982.27.2.0380
|View full text |Cite
|
Sign up to set email alerts
|

A vertical free fall plankton net with no mouth obstructions

Abstract: A newly developed vertical free fall net uses a weighted ring to propel it downward through the water at a standard speed. It is closed after a preselected time by a strangling rope secured aboard ship. This design eliminates the three‐point bridle and the long wire in front of a vertically hauled net which cause avoidance reactions in active zooplankton. The depth and volume filtered are unaffected by drift. The net does not require an oceanographic winch for its operation, only a warping drum for retrieval a… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

0
12
0

Year Published

1984
1984
2013
2013

Publication Types

Select...
9
1

Relationship

0
10

Authors

Journals

citations
Cited by 38 publications
(12 citation statements)
references
References 6 publications
0
12
0
Order By: Relevance
“…l a ) with surface-to-bottom drops of a 0.6 m diameter, 37 pm mesh free-fall net (Heron 1982). They were immediately preserved with 2 % formaldehyde buffered with hexamine.…”
Section: Methodsmentioning
confidence: 99%
“…l a ) with surface-to-bottom drops of a 0.6 m diameter, 37 pm mesh free-fall net (Heron 1982). They were immediately preserved with 2 % formaldehyde buffered with hexamine.…”
Section: Methodsmentioning
confidence: 99%
“…Sea water samples for pigment analysis and species identification were collected throughout the upper 150 m of the water column using 8 1 Niskin bottles. To determine the proportion of nanoplankton (< 15 pm fraction; Hallegraeff, 1981), subsamples were fractionated through 10 pm-mesh plankton gauze and prepared for Additional collections of the larger phytoplankton species were made with a 37 km-mesh free-fall plankton net (Heron, 1982).…”
Section: Methodsmentioning
confidence: 99%
“…Sea water samples were taken throughout the upper 200 m of the water column using 8-1 Niskin bottles or a 37-μιη mesh free-fall plankton net (Heron 1982). Collections were made at the Port Hacking 100m depth Station off Sydney (34°05'30"S; 151°15'30"E) from 1978 to 1982, along the New South Wales coast (SP 11/81 cruise, October 1981), in two warm-core eddies of the Hast Australian Current (SP 3/82, March 1982), the Coral Sea (SP 16/ 80, November 1980), the North West Shelf (SO 4/ 80, June 1980;SO 6/82, December 1982;SO 3/83, June 1983) and the Great Australian Bight (SP 6/ 82, June 1982) (Fig.…”
Section: Cottection Of Samplesmentioning
confidence: 99%