Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003
Since 1995, a stratified random spring bottom trawl survey in the NAFO Regulatory Area of Div. 3NO was conducted by Spain. In 2001, the trawl vessel was replaced; so, the time series indices were transformed. The transformed entire series of mean catches, abundance, biomass and length distribution f...
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ftcsic:oai:digital.csic.es:10261/328309 2024-02-11T10:01:57+01:00 Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003 González-Troncoso, Diana Paz, Xabier González-Iglesias María de la Concepción Atlantic Ocean North Atlantic Northeast Atlantic ICES 2004 http://hdl.handle.net/10508/595 http://hdl.handle.net/10261/328309 en eng Centro Oceanográfico de Vigo González Troncoso, D., Paz, X., González, C. 2004. Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003. NAFO Sci. Coun. Res. Doc. 04/12, Serial Nº N4957: 21p. http://hdl.handle.net/10508/595 http://hdl.handle.net/10261/328309 open Pesquerías Centro Oceanográfico de Vigo documento de trabajo http://purl.org/coar/resource_type/c_8042 2004 ftcsic 2024-01-16T11:49:20Z Since 1995, a stratified random spring bottom trawl survey in the NAFO Regulatory Area of Div. 3NO was conducted by Spain. In 2001, the trawl vessel was replaced; so, the time series indices were transformed. The transformed entire series of mean catches, abundance, biomass and length distribution for Atlantic cod are presented for the period 1995-2000, and the no-transformed data for the years 2001-2003. The standard deviations are shown for abundance and biomass. In years 1998 and 2001 some extreme catches occurred, so we present the series with and withoout those data.The summed abundance and biomass based on conversion of the lenght frequencias are presented and compared to the estimates from the method used to convert the CPUE. The results are quite the same. The biomass presents a non-clear trend and the abundance an increasing since 1998 and a decreasing last year. Report atlantic cod North Atlantic Northeast Atlantic Digital.CSIC (Spanish National Research Council) |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Pesquerías Centro Oceanográfico de Vigo |
spellingShingle |
Pesquerías Centro Oceanográfico de Vigo González-Troncoso, Diana Paz, Xabier González-Iglesias María de la Concepción Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003 |
topic_facet |
Pesquerías Centro Oceanográfico de Vigo |
description |
Since 1995, a stratified random spring bottom trawl survey in the NAFO Regulatory Area of Div. 3NO was conducted by Spain. In 2001, the trawl vessel was replaced; so, the time series indices were transformed. The transformed entire series of mean catches, abundance, biomass and length distribution for Atlantic cod are presented for the period 1995-2000, and the no-transformed data for the years 2001-2003. The standard deviations are shown for abundance and biomass. In years 1998 and 2001 some extreme catches occurred, so we present the series with and withoout those data.The summed abundance and biomass based on conversion of the lenght frequencias are presented and compared to the estimates from the method used to convert the CPUE. The results are quite the same. The biomass presents a non-clear trend and the abundance an increasing since 1998 and a decreasing last year. |
format |
Report |
author |
González-Troncoso, Diana Paz, Xabier González-Iglesias María de la Concepción |
author_facet |
González-Troncoso, Diana Paz, Xabier González-Iglesias María de la Concepción |
author_sort |
González-Troncoso, Diana |
title |
Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003 |
title_short |
Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003 |
title_full |
Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003 |
title_fullStr |
Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003 |
title_full_unstemmed |
Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003 |
title_sort |
atlantic cod population indices obtained from the spring surveys conducted by spain in the nafo regulatory area of divisions 3no, 1995-2003 |
publishDate |
2004 |
url |
http://hdl.handle.net/10508/595 http://hdl.handle.net/10261/328309 |
op_coverage |
Atlantic Ocean North Atlantic Northeast Atlantic ICES |
genre |
atlantic cod North Atlantic Northeast Atlantic |
genre_facet |
atlantic cod North Atlantic Northeast Atlantic |
op_relation |
Centro Oceanográfico de Vigo González Troncoso, D., Paz, X., González, C. 2004. Atlantic Cod Population Indices Obtained from the Spring Surveys Conducted by Spain in the NAFO Regulatory Area of Divisions 3NO, 1995-2003. NAFO Sci. Coun. Res. Doc. 04/12, Serial Nº N4957: 21p. http://hdl.handle.net/10508/595 http://hdl.handle.net/10261/328309 |
op_rights |
open |
_version_ |
1790597832219033600 |