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Assessing the South African sardine resource: two stocks rather than one?

African journal of marine science, 2015-01, Vol.37 (1), p.41-51

2015

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A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus on recent low counts of mothers with calves

African journal of marine science, 2023-01, Vol.45 (1), p.15-27

2023

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A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource

African journal of marine science, 2008-09, Vol.30 (2), p.291-310

2008

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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

African journal of marine science, 2008-09, Vol.30 (2), p.219-232

2008

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Assessment of the South African hake resource taking its two-species nature into account

African journal of marine science, 2008-09, Vol.30 (2), p.263-290

2008

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Refined estimates of South African pelagic fish biomass from hydro-acoustic surveys: quantifying the effects of target strength, signal attenuation and receiver saturation

African journal of marine science, 2008-09, Vol.30 (2), p.205-217

2008

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Sustainable Management Initiatives for the Southern African Hake Fisheries Over Recent Years

Bulletin of marine science, 2005-04, Vol.76 (2), p.287-320

2005

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Limits to the use of environmental indices to reduce risk and/or increase yield in the South African anchovy fishery

African journal of marine science, 2005, Vol.27 (1), p.191-203

2005

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Consideration of multispecies interactions in the Antarctic: a preliminary model of the minke whale - blue whale - krill interaction

African journal of marine science, 2004-06, Vol.26 (1), p.245-259

2004

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A Statistical Model for Stock Assessment of Southern Bluefin Tuna with Temporal Changes in Selectivity

African journal of marine science, 2003-06, Vol.25 (1), p.331-361

2003

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Possible interpretation problems for the current CITES listing criteria in the context of marine fish species under commercial harvest

Population ecology, 2000-04, Vol.42 (1), p.29-35

Butterworth, D. S.

2000

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Science and sentimentality

Nature (London), 1992-06, Vol.357 (6379), p.532-534

Butterworth, D. S

1992

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HAS THE AGE AT TRANSITION OF SOUTHERN HEMISPHERE MINKE WHALES DECLINED OVER RECENT DECADES?

Marine mammal science, 1999-07, Vol.15 (3), p.661-682

1999

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A simple technique to achieve active cavity-length stabilisation in a synchronously pumped optical parametric oscillator

Optics communications, 1996-02, Vol.123 (4), p.577-582

1996

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Will more seals result in reduced fishing quotas?

South African journal of science, 1992-08, Vol.88 (8), p.414-416

Butterworth, D.S.

1992

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SOUTH AFRICA'S OFFSHORE LIVING MARINE RESOURCES: THE SCIENTIFIC BASIS FOR MANAGEMENT OF THE FISHERIES

Transactions of the Royal Society of South Africa, 1997-01, Vol.52 (1), p.149-176

1997

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On the scientific basis for reducing the South African seal population

South African journal of science, 1988, Vol.84 (3), p.179-188

1988

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The effects of future consumption by the Cape fur seal on catches and catch rates of the Cape hakes. 4. Modelling the biological interaction between Cape fur seals Arctocephalus pusillus pusillus and the Cape hakes Merluccius capensis and M. paradoxus

South African journal of marine science, 1995-01, Vol.16 (1), p.255-285

1995

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GLM-based standardization of the catch per unit effort series for South African west coast hake, focusing on adjustments for targeting other species

South African journal of marine science, 2002-06, Vol.24 (1), p.323-339

2002

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The pion-deuteron forward elastic amplitude in the non-overlapping potentials model

Journal of physics. G, Nuclear physics, 1978-04, Vol.4 (4), p.499-521, Article 499

Butterworth, D S

1978

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Towards adaptive approaches to management of the South African Abalone Haliotis Midae Fishery

South African journal of marine science, 2000-06, Vol.22 (1), p.33-42

2000

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The effects of future consumption by the Cape fur seal on catches and catch rates of the Cape hakes. 3. Modelling the dynamics of the Cape fur seal Arctocephalus pusillus pusillus

South African journal of marine science, 1995-01, Vol.16 (1), p.161-183

1995

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The application of a management procedure to regulate the directed and bycatch fishery of South African sardine Sardinops sagax

South African journal of marine science, 1998-06, Vol.19 (1), p.449-469

1998

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Investigation on the effects of different levels of effort and of the closed season in the jig fishery for chokka squid Loligo vulgaris Reynaudii

South African journal of marine science, 1998-01, Vol.19, p.501-512

1998

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Towards rational harvesting of the South African anchovy considering survey imprecision and recruitment variability

South African Journal of Marine Science/Suid-Afrikaanse Tydskrif vir Seewetenskap. 1987, 1987-06, Vol.5 (1), p.937-951

1987

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Assessing the South African sardine resource: two stocks rather than one?

A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus on recent low counts of mothers with calves

A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource

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

Assessment of the South African hake resource taking its two-species nature into account

Refined estimates of South African pelagic fish biomass from hydro-acoustic surveys: quantifying the effects of target strength, signal attenuation and receiver saturation

Sustainable Management Initiatives for the Southern African Hake Fisheries Over Recent Years

Limits to the use of environmental indices to reduce risk and/or increase yield in the South African anchovy fishery

Consideration of multispecies interactions in the Antarctic: a preliminary model of the minke whale - blue whale - krill interaction

A Statistical Model for Stock Assessment of Southern Bluefin Tuna with Temporal Changes in Selectivity

Possible interpretation problems for the current CITES listing criteria in the context of marine fish species under commercial harvest

Science and sentimentality

HAS THE AGE AT TRANSITION OF SOUTHERN HEMISPHERE MINKE WHALES DECLINED OVER RECENT DECADES?

A simple technique to achieve active cavity-length stabilisation in a synchronously pumped optical parametric oscillator

Will more seals result in reduced fishing quotas?

SOUTH AFRICA'S OFFSHORE LIVING MARINE RESOURCES: THE SCIENTIFIC BASIS FOR MANAGEMENT OF THE FISHERIES

On the scientific basis for reducing the South African seal population

The effects of future consumption by the Cape fur seal on catches and catch rates of the Cape hakes. 4. Modelling the biological interaction between Cape fur seals Arctocephalus pusillus pusillus and the Cape hakes Merluccius capensis and M. paradoxus

GLM-based standardization of the catch per unit effort series for South African west coast hake, focusing on adjustments for targeting other species

The pion-deuteron forward elastic amplitude in the non-overlapping potentials model

Towards adaptive approaches to management of the South African Abalone Haliotis Midae Fishery

The effects of future consumption by the Cape fur seal on catches and catch rates of the Cape hakes. 3. Modelling the dynamics of the Cape fur seal Arctocephalus pusillus pusillus

The application of a management procedure to regulate the directed and bycatch fishery of South African sardine Sardinops sagax

Investigation on the effects of different levels of effort and of the closed season in the jig fishery for chokka squid Loligo vulgaris Reynaudii

Towards rational harvesting of the South African anchovy considering survey imprecision and recruitment variability

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