Zobrazeno 1 - 8 of 8 pro vyhledávání: '"C L de Moor"'
1
A review of the assessments of the major fisheries resources in South Africa
Autor: Susan J Johnston, JP Glazer, Rebecca A Rademeyer, Doug S Butterworth, LB Furman, C L de Moor, Anabela Brandão
Publikováno v: African Journal of Marine Science. 37:285-311
The waters off South Africa's coastline boast a rich mix of commercially fished species. Quantitative assessments of these marine resources have developed from simple methods first applied in the 1970s, to models that encompass a wide range of method
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0240c5f9aeaf441427c6c9adb38074bb
https://doi.org/10.2989/1814232x.2015.1070201
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3
Can anchovy age structure be estimated from length distribution data collected during surveys?
Autor: C L de Moor, Janet Coetzee, Doug S Butterworth
Publikováno v: African Journal of Marine Science; Vol 35, No 3 (2013)
African Journal of Marine Science
Historically, a time-series of proportions-at-age 1 from annual November hydro-acoustic surveys has been used to inform the assessment of, and in particular the choice of appropriate values for juvenile and adult natural mortality for, the South Afri
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8a7a637442a5de36b14d6e25dc79316
https://doi.org/10.2989/1814232x.2013.830991
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4
The 2004 re-assessment of the South African sardine and anchovy populations to take account of revisions to earlier data and recent record abundances
Autor: C L de Moor, Doug S Butterworth
Publikováno v: African Journal of Marine Science
African Journal of Marine Science; Vol 31, No 3 (2009)
Hydroacoustic surveys off the coast of South Africa over the early years of the 21st century indicated that both the sardine Sardinops sagax and anchovy Engraulis encrasicolus populations had simultaneously reached record abundances. The South Africa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a4a66c019df3755dced472af0afcff7
https://doi.org/10.2989/ajms.2009.31.3.6.994
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5
Assessing the South African sardine resource: two stocks rather than one?
Autor: Doug S Butterworth, C L de Moor
Publikováno v: African Journal of Marine Science
Sardine Sardinops sagax distributed off the west and south coasts of South Africa have traditionally been assumed to comprise a single well-mixed stock for assessment and management purposes. New research, however, lends weight to the possibility of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fab31c36e6642b4126bbe02b995fecdd
http://hdl.handle.net/11427/21258
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6
Simulation testing the robustness of stock assessment models to error: some results from the ICES strategic initiative on stock assessment methods
Autor: Victor Restrepo, James N. Ianelli, Alberto G. Murta, J. A. A. De Oliveira, Ernesto Jardim, Peter-John F. Hulson, Yi-Jay Chang, Niels T. Hintzen, Jonathan J. Deroba, Douglas P. Swain, Mark Dickey-Collas, Steven X. Cadrin, Carmen Fernández, Paul D. Spencer, Deborah M. Miller, G. G. Thompson, Yimin Ye, Dana H. Hanselman, Anders Nielsen, Laurence T. Kell, Leire Ibaibarriaga, Christopher M. Legault, Coby L. Needle, Joseph M. O’Malley, Catherine M. Dichmont, Doug S Butterworth, Richard D. Methot, C L de Moor, Allana Cristina Ribeiro da Silva, Michel Bertignac, Ana M. Parma, J. Blaylock, Juan L. Valero, Cristian M. Canales, M. Mood
Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
ICES Journal of Marine Science, 72(1), 19-30
ICES Journal of Marine Science 72 (2015) 1
The World Conference on Stock Assessment Methods (July 2013) included a workshop on testing assessment methods through simula- tions. The exercise was made up of two steps applied to datasets from 14 representative fish stocks from around the world.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a10fb64008528da6d632696f315eaae
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7
Some initial ideas for data required before the next assessments for sardine and anchovy
Autor: C L, de Moor, J, Coetzee
This document lists the standard data required prior to the commencement of the next assessments of South African anchovy and sardine, as well as some ideas for changes to the use of these data and the inclusion of some potential new data. This is to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::05b302b3cc60fdee0da6844f731d55b6
http://hdl.handle.net/11427/36831
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8
Revised estimates of abundance of South African sardine and anchovy from acoustic surveys adjusting for echosounder saturation in earlier surveys and attenuation effects for sardine
Autor: Doug S Butterworth, Janet Coetzee, C L de Moor
Publikováno v: African Journal of Marine Science
African Journal of Marine Science; Vol 30, No 2 (2008); 219-232
Hydro-acoustic surveys have been used to provide annual estimates of May recruitment and November spawner biomass of the South African sardine Sardinops sagax and anchovy Engraulis encrasicolus resources since 1984. These time-series of abundance est
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b501c57d9776f029d4703661925babcf
https://hdl.handle.net/11427/17634
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