Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Midwater trawling"'
Publikováno v:
Ocean Engineering. 199:106989
A hyper-lift trawl door (HLTD) which is not heavily dependent on the bottom for its hydrodynamic performance was developed for both bottom and midwater trawling. Flume tank experiments were conducted on simplified HLTD models with an aspect ratio of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d42e1e15735680c4f9578742adc5d6e
https://doi.org/10.1016/j.oceaneng.2020.106989
https://doi.org/10.1016/j.oceaneng.2020.106989
Akademický článek
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Autor:
MehnerThomas
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 72:116-124
Recent studies have indicated that in fish populations performing diel vertical migrations (DVM), some individuals do not migrate but reflect a resident phenotype, a pattern named as partial DVM. I present data on fish densities and the proportion of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::437a5ee870aa7ed7753b8bba09a015aa
https://doi.org/10.1139/cjfas-2014-0009
https://doi.org/10.1139/cjfas-2014-0009
Autor:
Harold DeLouche, Haraldur Arnar Einarsson, Gebremeskel Eshetu Kebede, David M. Kelly, George Legge, Paul D. Winger, Zhaohai Cheng
Publikováno v:
Ocean Engineering. 195:106674
The hydrodynamic properties of ropes can significantly affect the underwater performance of midwater trawls, including their geometry, drag, fuel consumption, and rate of gear setting and hauling activities. In this study, we investigate the hydrodyn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d3ce927c962ba554651e9fe22d450f0
https://doi.org/10.1016/j.oceaneng.2019.106674
https://doi.org/10.1016/j.oceaneng.2019.106674
Publikováno v:
Deep Sea Research Part II: Topical Studies in Oceanography. 98:292-300
The ECOMAR project was a multidisciplinary process study conducted in the mid-North Atlantic, coincident hydrodynamically with the Sub-Polar Front (SPF; 48–54°N) and topographically with Charlie-Gibbs Fracture Zone of the Mid-Atlantic Ridge, as pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49bd9f8d264313163f29a2cdfe4f1cb1
https://doi.org/10.1016/j.dsr2.2013.08.001
https://doi.org/10.1016/j.dsr2.2013.08.001
Autor:
Mark R. Vinson, Daniel L. Yule, Jean V. Adams, Thomas R. Hrabik, Tyler D. Ahrenstorff, Zebadiah Woiak
Publikováno v:
Fisheries Research. 140:123-132
Acoustic methods are used to estimate the density of pelagic fish in large lakes with results of midwater trawling used to assign species composition. Apportionment in lakes having mixed species can be challenging because only a small fraction of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::024f114daf292ae206424cd735d976c4
https://doi.org/10.1016/j.fishres.2012.12.012
https://doi.org/10.1016/j.fishres.2012.12.012
Publikováno v:
International Review of Hydrobiology. 97:509-525
The fish stock of a deep temperate, mesotrophic lake was sampled at different depths using a fixed-frame fry trawl, during two nights in mid-September 2009. Additionally, horizontal and vertical hydroacoustics were used simultaneously to evaluate fis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdd9527ab46a9f71b19cfcc9e08320e2
https://doi.org/10.1002/iroh.201101440
https://doi.org/10.1002/iroh.201101440
Publikováno v:
ICES Journal of Marine Science. 70:196-203
Stockwell, J. D., Weber, T. C., Baukus, A. J., and Jech, J. M. 2013. On the use of omnidirectional sonars and downwards-looking echosounders to assess pelagic fish distributions during and after midwater trawling. – ICES Journal of Marine Science,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e34b94d10a229a1e0df443c034f871db
https://doi.org/10.1093/icesjms/fss139
https://doi.org/10.1093/icesjms/fss139
Autor:
Jeffrey S. Schaeffer, Thomas R. Hrabik, David M. Warner, Bernie Pientka, Timothy P. O'Brien, Jeffrey D. Holuszko, Lars G. Rudstam, Randall M. Claramunt, Daniel L. Yule
Publikováno v:
Fisheries Research. :62-69
Because it is not possible to identify species with echosounders alone, trawling is widely used as a method for collecting species and size composition data for allocating acoustic fish density estimates to species or size groups. In the Laurentian G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26ac1940d2b14ac6f4561810c0c07ac5
https://doi.org/10.1016/j.fishres.2011.11.021
https://doi.org/10.1016/j.fishres.2011.11.021
Publikováno v:
Ecology of Freshwater Fish. 21:337-348
We sampled three limnetic fish species: juvenile sockeye salmon (Oncorhynchus nerka), three-spine stickleback (Gasterosteus aculeatus) and longfin smelt (Spirinchus thaleichthys) in Lake Washington to quantify species-specific patterns of diel vertic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cacdd1aafd09a650d7d98c1972244138
https://doi.org/10.1111/j.1600-0633.2012.00554.x
https://doi.org/10.1111/j.1600-0633.2012.00554.x