WG-SAM-11 | Reuniones

Grupo de Trabajo de Estadística, Evaluación y Modelado

Lugar:

Busan, República de Corea

Fecha y hora del inicio de la reunión:

lunes, 11 julio 2011

Fecha y hora del fin de la reunión:

viernes, 15 julio 2011

Plazo de presentación

lunes, 27 junio, 2011 - 00:00 Australia/Hobart (Documento de grupo de trabajo)

Informe de la reunión:

s-sc-xxx-a05.pdf (961.1 KB)

Documentos de reunión

Documentos

Número de documento	Nombre	Punto(s) de la agenda
CCAMLR-XXX/05 Mostrar menos información	INFORME DE LA REVISIÓN INDEPENDIENTE DE LOS SISTEMAS DE GESTIÓN DE DATOS DE LA CCRVMA Secretaría Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	6
WG-EMM-11/09 Mostrar menos información	The Secretariat review of the Strategic Plan, associated activities and outcomes Secretariat Resumen: At CCAMLR-XXIX, the Commission recommended that a staffing and salary strategy be included in the review of the Secretariat’s Strategic Plan and that SCAF consider the outcomes of that review at its meeting in 2011 (CCAMLR-XXIX, paragraph 3.5 and 3.10). In addition, following consideration at last year’s meetings of WG-SAM and WG-FSA the Commission adopted a recommendation from the Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	6
WG-EMM-11/44 Mostrar menos información	Some properties of diagnostics of GLMM model tuning for standardising CPUE indices in the Area 48 using the CCAMLR fishery statistics database P. Gasyukov and S. Kasatkina (Russia) Resumen: The data of krill fishery in Subarea 48 for 1986 – 2008 presented to CAMLR database by haul-by-haul data were used. Standardizing CPUE was performed by applying the generalized linear model with random effects (GLMM). The analysis of diagnostics of GLMM tuning indicated that the model with Tweedie’s distribution satisfactorily describes the set of data collected in Subareas 48.1, 48.2 and 48.3 Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	3
WG-SAM-11/01 Mostrar menos información	Draft Agenda for the 2011 Meeting of the Working Group on Statistics, Assessments and Modelling (WG-SAM) Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	1.1
WG-SAM-11/04 Mostrar menos información	Deployment of research hauls in the exploratory fisheries for Dissostichus spp. in Subareas 48.6 and 58.4 in 2010/11 Secretariat Resumen: In November 2010, the Secretariat allocated 1405 random starting positions for research hauls in order to facilitate research fishing by seven vessels which had notified their intention to participate in exploratory fisheries for Dissostichus spp. in Subarea 48.6 and Divisions 58.4.1, 58.4.2 and 58.4.3a in 2010/11. The positions were allocated in accordance with Conservation Measure Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	4
WG-SAM-11/05 Mostrar menos información	Reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in the 2010/11 and proposal of the consecutive survey in the 2011/12 K. Taki, T. Iwami and M. Kiyota (Japan) Resumen: In accordance with the Conservation Measure 41-07 (2010), a survey was conducted in order to collect information for the stock status and biology of toothfish in the southeast sector (24 allocated hauls) of Division 58.4.3b (BANZARE Bank), using a commercial bottom longline vessel Shinsei Maru No. 3, from May 7 to 16, 2011. Shinsei Maru Trot line system was used as fishing gear for 19 hauls Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	5
WG-SAM-11/06 Mostrar menos información	Reports on abundance and biological information on toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2010/11 season K.Taki, T. Iwami and M. Kiyota (Japan) Resumen: A survey was conducted in order to collect information for the stock status and various biological information on toothfish in Division 58.4.4a & b (Ob Lena Bank) by using a commercial bottom longline vessel, Shinsei Maru No. 3, from March 30 to May 2, 2011. The survey was undertaken according to the decision in the 29th CCAMLR Meeting of the Commission (CCAMLR-XXIX, 2010; paragraph 4.62 Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	5
WG-SAM-11/07 Mostrar menos información	Research plan for toothfish in Divisions 58.4.4a and b by Shinsei Maru No. 3 in 2011/12 Delegation of Japan Resumen: A tagging survey in SSRUs B and C in Division 58.4.4 a & b was initiated in the 2010/11 fishing season with the aims of providing the data required for assessments of the population structure, size, movement and growth of Dissostichus spp. in the centered area of Division 58.4.4 a & b. In the 2010/11 a total of 189 D. eleginoides were tagged and released in SSRUs B Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	5
WG-SAM-11/08 Mostrar menos información	Principles for evaluating data collection plans in data-poor exploratory fisheries P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia) Resumen: Since 1992, CCAMLR has agreed that exploratory fishing is not to be allowed to expand faster than the acquisition of information necessary to ensure that the fishery can and will be conducted in accordance with the principles set forth in Article II of the Convention. However, several times over the last five years the Scientific Committee has noted with concern the lack of progress in Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	2
WG-SAM-11/09 Mostrar menos información	Brief results of research fishing in Subarea 88.3 in the 2010/11 season Delegation of the Russian Federation Resumen: According to the application that has been applied by Russian Federation in 2010 for season 2010/2011 research fishing in subarea 88.3 has been done. The work has been done by longliner “Sparta”, with two scientific observers aboard. They deployed 20 sets (trotline) at different depths. Total amount of set hooks is 87096. Research catching was carried out in SSRU B, C, and D. In SSRU A sets Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	5
WG-SAM-11/10 Mostrar menos información	Plan of research fishing in Subarea 88.3 in the 2011/12 season Delegation of the Russian Federation Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	5
WG-SAM-11/12 Mostrar menos información	Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL S.G. Candy (Australia) Resumen: The model of tag shedding implicit in CASAL is that of Kirkwood and Walker (KW) (1984) which models the annual tag shedding (i.e. loss) rate as a constant for individual tags. The CASAL software applies this model correctly for fish released with a single tag but does not have the facility at present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	3
WG-SAM-11/13 Mostrar menos información	Development of a generic operating model framework for data collection, assessment method and management strategy evaluations P.E. Ziegler (Australia) Resumen: A generic spatially-explicit age-structured model framework is in development that will enable to evaluate data collection protocols, assessment methods and management strategies. The model framework is programmed in R to promote transparency and interactions between researchers. It is based on the FLR framework and will incorporate links to external assessments programs such as CASAL. The Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	2
WG-SAM-11/14 Mostrar menos información	Developments in the CCAMR tagging program relating to tag linking Secretariat Resumen: This paper presents the updates to the CCAMLR tagging database in relation to tag recapture links, and the problems associated with linking tags. Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	3
WG-SAM-11/15 Rev. 1 Mostrar menos información	Research standards for exploratory fisheries D. Kinzey (USA) Resumen: The potential for data poor exploratory fisheries in the CAMLR Convention area to provide sufficient data to lead to formal stock assessments of Dissostichus spp. is evaluated and recommendations are made for optimizing this potential. The types of data that have led to successful assessments in the past are reviewed. Exploratory fisheries and research questions for subareas Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	2
WG-SAM-11/16 Mostrar menos información	Proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand) Resumen: The exploratory fishery for Dissostichus spp. has now been operating for 14 years in Subarea 88.1 and for nine years in Subarea 88.2. Associated research has led to an assessment of the fisheries potential yield, but a source of ongoing uncertainty in the stock assessment concerns recruitment dynamics. Although pre-recruit Antarctic toothfish fish are caught in various locations Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	2, 5
WG-SAM-11/17 Mostrar menos información	Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data S. Mormede (New Zealand) Resumen: Antarctic and Patagonian toothfish stocks in the Antarctic have been assessed within CCAMLR areas using integrated statistical catch-at-age stock assessment models. These models were initially run annually, but have been run biennially since 2007. This document investigates the impact on model outputs of withholding from a stock assessment between one and eight years of age frequency and/or Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	6
WG-SAM-11/18 Mostrar menos información	Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand) Resumen: The rate at which tags are lost from tagged toothfish is an important parameter in modelling of the Antarctic toothfish (Dissostichus mawsoni) populations in Subarea 88.1 and 88.2. The toothfish stocks in these areas have been assessed using data from tag-release and recapture experiments within a CASAL integrated stock assessment model, using tag loss rates derived by Dunn et al. ( Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	6
WG-SAM-11/19 Mostrar menos información	Report on the results of exploratory research fishing for crabs in Subarea 48.2 on board FV Tamango in the 2009/10 season V.A. Bizikov and S.E. Anosov (Russia) Resumen: Exploratory research voyage of F/V 'TAMANGO' proceeded from March, 23 to May, 8, 2010. Three areas were explored during the voyage: Patagonian shelf (Statistic Subarea 41.3.1), South Orkney Islands shelf (CCAMLR Subarea 48.2) and the North Scotia Ridge. Exploratory pot-line survey revealed no commercial concentrations of crabs on the South Orkney Islands shelf. However, commercial Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	5
WG-SAM-11/20 Mostrar menos información	A preliminary population status model for the Patagonian toothfish, Dissostichus eleginoides, on the Kerguelen Plateau (Divisions 58.5.1 and 58.5.2) using CASAL S.G. Candy (Australia), A. Relot, G. Duhamel (France), D.C. Welsford, A.J. Constable, T.D. Lamb (Australia), P. Pruvost and N. Gasco (France) Resumen: The Kerguelen Plateau (Statistical Divisions 58.51 and 58.5.2) supports the largest Patagonian toothfish (Dissostichus eleginoides) fishery in the Southern Ocean outside of the Atlantic sector. Analysis of genetic, demographic and tagging data indicates that toothfish form a metapopulation in this region. This paper describes the development of a CASAL model incorporating data from Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Solicitar acceso a documento de reunión	3
WG-SAM-11/P1 Mostrar menos información	Estimates of sustainable yield for 50 data-poor stocks in the Pacific coast groundfish fishery management plan E.J. Dick and A.D. McCall Resumen: The Magnuson-Stevens Fishery Conservation and Management Reauthorization Act of 2006 requires Regional Fishery Management Councils to set annual catch limits for all stocks or stock complexes in Federal fishery management plans beginning in 2011. Most species listed in the Pacific Coast Groundfish Fishery Management Plan have not been assessed, in large part due to data limitations. Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Publicación: (NOAA-TM-NMFS-SWFSC-460 (2010)) Solicitar acceso a documento de reunión	2
WG-SAM-11/P2 Mostrar menos información	Depletion-based stock reduction analysis: a catch-based method for determining sustainable yields for data-poor fish stocks E.J. Dick and A.D. McCall Resumen: We describe a method for determining reasonable yield and management reference points for data-poor fisheries in cases where approximate catches are known from the beginning of exploitation. The method, called Depletion-Based Stock Reduction Analysis (DB-SRA), merges stochastic Stock-Reduction Analysis with Depletion-Corrected Average Catch. Data requirements include estimates of historical Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Publicación: (Fish. Res. (2011), in press, doi:10.1016/j.fishres.2011.05.007) Solicitar acceso a documento de reunión	2
WG-SAM-11/P3 Mostrar menos información	Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations A.D. McCall Resumen: The depletion-corrected average catch (DCAC) formula is an extension of the potential-yield formula, and it provides useful estimates of sustainable yield for data-poor fisheries on long-lived species. Over an extended period (e.g. a decade or more), the catch is divided into a sustainable yield component and an unsustainable “windfall” component associated with a one-time reduction in stock Read More Presentado por: Admin Admin (Secretaría de la CCRVMA) Publicación: (ICES J. Mar. Sci. (2009), 66: 2267–2271) Solicitar acceso a documento de reunión	2

Agenda

Expandir Comentarios(/Resúmenes) | Expandir Documentos | Contraer

1 Introduction

Comentarios(/Resúmenes)

The Scientific Committee established WG-SAM during CCAMLR-XXV (SC-CAMLR-XXV, paragraph 13.12), with a directed emphasis on developing, refining, and evaluating quantitative approaches for all Antarctic marine living resources managed by CCAMLR. WG-SAM serves as a flexible technical group to address quantitative issues relevant to WGFSA, WG-EMM, and ad hoc WG-IMAF (SC-CAMLR-XXV, paragraphs 13.4 to 13.8). WGSAM is to provide advice necessary for the work of these working groups and the Scientific Committee.

Working papers submitted to WG-SAM, along with presentations and analyses conducted during the meeting, will form the basis for discussion and advice.

The terms of reference for the Working Group on Statistics, Assessments and Modelling (WG-SAM) are:

To provide advice to the Scientific Committee and its working groups on:

quantitative assessment methods, statistical procedures, and modelling approaches for the conservation of Antarctic marine living resources; and
the implementation and data requirements of such methods, procedures and approaches.

Background information to the organisation of WG-SAM is available in the report of SCCAMLR-XXVI on the following topics:

the process for determining what is within the remit of WG-SAM (SC-CAMLR-XXVI, paragraph 2.16 (ii, iii)), and
the approach for structuring the future work program of WG-SAM (SC-CAMLR-XXVI, paragraph 2.16(iv)).

Documentos

1.1 Opening of the meeting

Comentarios(/Resúmenes)

Welcome to participants and overview of facilities, Secretariat’s offices, computer support, Internet access and extracurricular activities.

Documentos

WG-SAM-11/01

Draft Agenda for the 2011 Meeting of the Working Group on Statistics, Assessments and Modelling (WG-SAM)

1.2 Adoption of the agenda and organisation of the meeting

Comentarios(/Resúmenes)

Amendments to and adoption of the meeting agenda, assignment of working papers to agenda items, appointment of rapporteurs and procedures for the production of the report and establishment of ad hoc subgroups if necessary.

The usual agenda has been structured generally to account for the areas of work most likely to engage WG-SAM:

estimation of parameters,
development of stock and other assessment methods,
review of statistical and analytical methods used by SC-CAMLR and its Working Groups,
development of tools for modelling populations, foodwebs and ecosystems, and
evaluation of management procedures and strategies (data collection, assessments and decision rules) for their ability to achieve objectives.

In 2011, WG-SAM has been tasked to focus its discussion primarily on research and assessment of toothfish stocks and will not be meeting for its usual length of time.

Documentos

2 Focus topic: work plan for implementing research proposals for data-poor exploratory fisheries

Comentarios(/Resúmenes)

In its discussions last year on new and exploratory toothfish fisheries, the Scientific Committee considered further the development of a research framework for data-poor fisheries. It recommended that some specific elements of the work plan be considered as a high priority focus topic for WG-SAM in the coming intersessional period with the following terms of reference (SC-CAMLR-XXIX, paragraph 3.133):

WG-SAM focus topic: work plan for implementing research proposals for data-poor exploratory fisheries. To consider:

methods for evaluating capability of vessels and gear types to contribute to research outcomes and for calibrating vessels and gears, including specific case studies relevant to current exploratory fisheries such as in tag-recapture programs;
proposed research designs and data collection protocols for estimating stock status in data-poor exploratory fisheries;
methods for assessing stock status in data-poor exploratory fisheries.

Members are invited to submit papers relevant to these terms of reference for consideration of this focus topic. Discussion will begin on the first day and contribute to advice provided to WG-FSA and the Scientific Committee under Agenda Items 4 and 5.

Documentos

WG-SAM-11/08	Principles for evaluating data collection plans in data-poor exploratory fisheries P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)
WG-SAM-11/13	Development of a generic operating model framework for data collection, assessment method and management strategy evaluations P.E. Ziegler (Australia)
WG-SAM-11/15 Rev. 1	Research standards for exploratory fisheries D. Kinzey (USA)
WG-SAM-11/16	Proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)
WG-SAM-11/P1	Estimates of sustainable yield for 50 data-poor stocks in the Pacific coast groundfish fishery management plan E.J. Dick and A.D. McCall
WG-SAM-11/P2	Depletion-based stock reduction analysis: a catch-based method for determining sustainable yields for data-poor fish stocks E.J. Dick and A.D. McCall
WG-SAM-11/P3	Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations A.D. McCall

3 Methods for assessing finfish stocks in established fisheries, notably Dissostichus spp.

Documentos

WG-EMM-11/44	Some properties of diagnostics of GLMM model tuning for standardising CPUE indices in the Area 48 using the CCAMLR fishery statistics database P. Gasyukov and S. Kasatkina (Russia)
WG-SAM-11/12	Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL S.G. Candy (Australia)
WG-SAM-11/14	Developments in the CCAMR tagging program relating to tag linking Secretariat
WG-SAM-11/20	A preliminary population status model for the Patagonian toothfish, Dissostichus eleginoides, on the Kerguelen Plateau (Divisions 58.5.1 and 58.5.2) using CASAL S.G. Candy (Australia), A. Relot, G. Duhamel (France), D.C. Welsford, A.J. Constable, T.D. Lamb (Australia), P. Pruvost and N. Gasco (France)

4 Strategies for acquiring data and setting catch limits in data poor exploratory fisheries

Documentos

WG-SAM-11/04

Deployment of research hauls in the exploratory fisheries for Dissostichus spp. in Subareas 48.6 and 58.4 in 2010/11
Secretariat

5 Designs for scientific research on commercial fish stocks in closed areas and areas with zero catch limits

Documentos

WG-SAM-11/05	Reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in the 2010/11 and proposal of the consecutive survey in the 2011/12 K. Taki, T. Iwami and M. Kiyota (Japan)
WG-SAM-11/06	Reports on abundance and biological information on toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2010/11 season K.Taki, T. Iwami and M. Kiyota (Japan)
WG-SAM-11/07	Research plan for toothfish in Divisions 58.4.4a and b by Shinsei Maru No. 3 in 2011/12 Delegation of Japan
WG-SAM-11/09	Brief results of research fishing in Subarea 88.3 in the 2010/11 season Delegation of the Russian Federation
WG-SAM-11/10	Plan of research fishing in Subarea 88.3 in the 2011/12 season Delegation of the Russian Federation
WG-SAM-11/16	Proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)
WG-SAM-11/19	Report on the results of exploratory research fishing for crabs in Subarea 48.2 on board FV Tamango in the 2009/10 season V.A. Bizikov and S.E. Anosov (Russia)

6 Other business

Documentos

CCAMLR-XXX/05	INFORME DE LA REVISIÓN INDEPENDIENTE DE LOS SISTEMAS DE GESTIÓN DE DATOS DE LA CCRVMA Secretaría
WG-EMM-11/09	The Secretariat review of the Strategic Plan, associated activities and outcomes Secretariat
WG-SAM-11/17	Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data S. Mormede (New Zealand)
WG-SAM-11/18	Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)

7 Advice to the Scientific Committee

Documentos

7.1 WG-FSA

Documentos

7.2 General

Documentos

8 Adoption of report and close of meeting

Documentos