The enclosure trap, a new tool for sampling juvenile crayfish
When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is describ...
Ausführliche Beschreibung
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Fjälling A.B. [verfasserIn] |
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Englisch |
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2011 |
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In: Knowledge and Management of Aquatic Ecosystems - EDP Sciences, 2010, (2011), 401, p 09 |
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Übergeordnetes Werk: |
year:2011 ; number:401, p 09 |
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DOI / URN: |
10.1051/kmae/2011022 |
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Katalog-ID: |
DOAJ044432410 |
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10.1051/kmae/2011022 doi (DE-627)DOAJ044432410 (DE-599)DOAJ2fd8938ebc8e4bd8a06bd2207de70497 DE-627 ger DE-627 rakwb eng SH1-691 Fjälling A.B. verfasserin aut The enclosure trap, a new tool for sampling juvenile crayfish 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is described which aims to avoid these disadvantages. It uses a 0.09 m2 trap which is set on the river or lake bottom, well in advance of expected hatching of crayfish eggs. The trap has a substrate which juveniles colonize and a net that fences them in and captures them when the trap is lifted. In field tests, the new trap provided data on mean density (29·m-2) and mean total length (22 mm) of young-of-year signal crayfish which were comparable to data from suction sampling. The enclosure trap may provide data for recruitment studies and become a tool in crayfish research in general. crayfish sampler juvenile crayfish young-of-year crayfish Pacifastacus leniusculus Aquaculture. Fisheries. Angling In Knowledge and Management of Aquatic Ecosystems EDP Sciences, 2010 (2011), 401, p 09 (DE-627)604078730 (DE-600)2502926-5 19619502 nnns year:2011 number:401, p 09 https://doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/article/2fd8938ebc8e4bd8a06bd2207de70497 kostenfrei http://dx.doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/toc/1961-9502 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2011 401, p 09 |
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10.1051/kmae/2011022 doi (DE-627)DOAJ044432410 (DE-599)DOAJ2fd8938ebc8e4bd8a06bd2207de70497 DE-627 ger DE-627 rakwb eng SH1-691 Fjälling A.B. verfasserin aut The enclosure trap, a new tool for sampling juvenile crayfish 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is described which aims to avoid these disadvantages. It uses a 0.09 m2 trap which is set on the river or lake bottom, well in advance of expected hatching of crayfish eggs. The trap has a substrate which juveniles colonize and a net that fences them in and captures them when the trap is lifted. In field tests, the new trap provided data on mean density (29·m-2) and mean total length (22 mm) of young-of-year signal crayfish which were comparable to data from suction sampling. The enclosure trap may provide data for recruitment studies and become a tool in crayfish research in general. crayfish sampler juvenile crayfish young-of-year crayfish Pacifastacus leniusculus Aquaculture. Fisheries. Angling In Knowledge and Management of Aquatic Ecosystems EDP Sciences, 2010 (2011), 401, p 09 (DE-627)604078730 (DE-600)2502926-5 19619502 nnns year:2011 number:401, p 09 https://doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/article/2fd8938ebc8e4bd8a06bd2207de70497 kostenfrei http://dx.doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/toc/1961-9502 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2011 401, p 09 |
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10.1051/kmae/2011022 doi (DE-627)DOAJ044432410 (DE-599)DOAJ2fd8938ebc8e4bd8a06bd2207de70497 DE-627 ger DE-627 rakwb eng SH1-691 Fjälling A.B. verfasserin aut The enclosure trap, a new tool for sampling juvenile crayfish 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is described which aims to avoid these disadvantages. It uses a 0.09 m2 trap which is set on the river or lake bottom, well in advance of expected hatching of crayfish eggs. The trap has a substrate which juveniles colonize and a net that fences them in and captures them when the trap is lifted. In field tests, the new trap provided data on mean density (29·m-2) and mean total length (22 mm) of young-of-year signal crayfish which were comparable to data from suction sampling. The enclosure trap may provide data for recruitment studies and become a tool in crayfish research in general. crayfish sampler juvenile crayfish young-of-year crayfish Pacifastacus leniusculus Aquaculture. Fisheries. Angling In Knowledge and Management of Aquatic Ecosystems EDP Sciences, 2010 (2011), 401, p 09 (DE-627)604078730 (DE-600)2502926-5 19619502 nnns year:2011 number:401, p 09 https://doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/article/2fd8938ebc8e4bd8a06bd2207de70497 kostenfrei http://dx.doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/toc/1961-9502 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2011 401, p 09 |
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10.1051/kmae/2011022 doi (DE-627)DOAJ044432410 (DE-599)DOAJ2fd8938ebc8e4bd8a06bd2207de70497 DE-627 ger DE-627 rakwb eng SH1-691 Fjälling A.B. verfasserin aut The enclosure trap, a new tool for sampling juvenile crayfish 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is described which aims to avoid these disadvantages. It uses a 0.09 m2 trap which is set on the river or lake bottom, well in advance of expected hatching of crayfish eggs. The trap has a substrate which juveniles colonize and a net that fences them in and captures them when the trap is lifted. In field tests, the new trap provided data on mean density (29·m-2) and mean total length (22 mm) of young-of-year signal crayfish which were comparable to data from suction sampling. The enclosure trap may provide data for recruitment studies and become a tool in crayfish research in general. crayfish sampler juvenile crayfish young-of-year crayfish Pacifastacus leniusculus Aquaculture. Fisheries. Angling In Knowledge and Management of Aquatic Ecosystems EDP Sciences, 2010 (2011), 401, p 09 (DE-627)604078730 (DE-600)2502926-5 19619502 nnns year:2011 number:401, p 09 https://doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/article/2fd8938ebc8e4bd8a06bd2207de70497 kostenfrei http://dx.doi.org/10.1051/kmae/2011022 kostenfrei https://doaj.org/toc/1961-9502 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 2011 401, p 09 |
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enclosure trap, a new tool for sampling juvenile crayfish |
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The enclosure trap, a new tool for sampling juvenile crayfish |
abstract |
When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is described which aims to avoid these disadvantages. It uses a 0.09 m2 trap which is set on the river or lake bottom, well in advance of expected hatching of crayfish eggs. The trap has a substrate which juveniles colonize and a net that fences them in and captures them when the trap is lifted. In field tests, the new trap provided data on mean density (29·m-2) and mean total length (22 mm) of young-of-year signal crayfish which were comparable to data from suction sampling. The enclosure trap may provide data for recruitment studies and become a tool in crayfish research in general. |
abstractGer |
When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is described which aims to avoid these disadvantages. It uses a 0.09 m2 trap which is set on the river or lake bottom, well in advance of expected hatching of crayfish eggs. The trap has a substrate which juveniles colonize and a net that fences them in and captures them when the trap is lifted. In field tests, the new trap provided data on mean density (29·m-2) and mean total length (22 mm) of young-of-year signal crayfish which were comparable to data from suction sampling. The enclosure trap may provide data for recruitment studies and become a tool in crayfish research in general. |
abstract_unstemmed |
When managing crayfish populations, it is important to have access to reliable data on population densities and growth of juveniles. Present sampling methods are mostly active and often labor intensive, do not always yield quantitative data, and may harm the crayfish. A new passive method is described which aims to avoid these disadvantages. It uses a 0.09 m2 trap which is set on the river or lake bottom, well in advance of expected hatching of crayfish eggs. The trap has a substrate which juveniles colonize and a net that fences them in and captures them when the trap is lifted. In field tests, the new trap provided data on mean density (29·m-2) and mean total length (22 mm) of young-of-year signal crayfish which were comparable to data from suction sampling. The enclosure trap may provide data for recruitment studies and become a tool in crayfish research in general. |
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