Mesh size and collection characteristics of 50-cm diameter conical plankton nets
dc.contributor.author | Evans, Marlene S. | en_US |
dc.contributor.author | Sell, Daniel W. | en_US |
dc.date.accessioned | 2006-09-08T20:48:44Z | |
dc.date.available | 2006-09-08T20:48:44Z | |
dc.date.issued | 1985-03 | en_US |
dc.identifier.citation | Evans, Marlene S.; Sell, Daniel W.; (1985). "Mesh size and collection characteristics of 50-cm diameter conical plankton nets." Hydrobiologia 122(2): 97-104. <http://hdl.handle.net/2027.42/42868> | en_US |
dc.identifier.issn | 0018-8158 | en_US |
dc.identifier.issn | 1573-5117 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/42868 | |
dc.description.abstract | This paper compares collection characteristics of #2-(363 µm), #10-(156 µm), and #20-(76 µm) mesh conical plankton nets: dimensions were 50-cm diameter by 1.6-m long. The #2-mesh net severely underestimated the abundances of Lake Michigan copepods and cladocerans with the exception of the largest species ( Limnocalanus macrurus ). Zooplankton abundance estimates were more similar for the #10- and #20-mesh nets collections. Nauplii, however, were severely undersampled by the #10-mesh net with abundance estimates approximately 8 to 12 times lower than for the #20-mesh net collections. Most other larger zooplankton were 50% more abundant in the 20-mesh net collections than in the #10-mesh net collections: such consistent differences occurred despite large variations in taxa size. This indicates that a sampling bias occurred other than the loss of zooplankton through the meshes of the #10 net. We hypothesize that, by incorrectly locating the flowmeter in the mouth of the plankton net, we underestimated the volume of water filtered by the easily-clogged #20-mesh net and therefore overestimated taxa abundances. We conclude that the #10-mesh net provided accurate estimates of microcrustacean zooplankton abundances except for nauplii. The #10-mesh net used in our study had a filtration area ratio of 3.06 and operated at a calculated average filtration efficiency of 98%. The #20-mesh net had a filtration area ratio of 1.86 and operated at calculated average filtration efficiencies ranging from 64.7% (41.7 m station) to 79.6% (6.3 m station). Calculations are presented which show how the filtration efficiencies of the nets used in our study could be improved by net redesign. | en_US |
dc.format.extent | 623659 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Kluwer Academic Publishers; Dr. W. Junk Publishers ; Springer Science+Business Media | en_US |
dc.subject.other | Life Sciences | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | Hydrobiology | en_US |
dc.subject.other | Zooplankton | en_US |
dc.subject.other | Mesh Size | en_US |
dc.subject.other | Filtration Efficiency | en_US |
dc.subject.other | Flowmeter | en_US |
dc.subject.other | Plankton Nets | en_US |
dc.title | Mesh size and collection characteristics of 50-cm diameter conical plankton nets | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Great Lakes Research Division, The University of Michigan, 48109, Ann Arbor, MI, U.S.A. | en_US |
dc.contributor.affiliationum | Great Lakes Research Division, The University of Michigan, 48109, Ann Arbor, MI, U.S.A. | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/42868/1/10750_2004_Article_BF00032095.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00032095 | en_US |
dc.identifier.source | Hydrobiologia | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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