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RECOMMENDATIONS ON ROCK LOBSTER TACs FOR THE TRISTAN GROUP OF ISLANDS FOR THE 2018/191 SEASON

Author: Butterworth, Doug ; Johnston, Susan Date: Sep 2018 OMPs have recently been accepted as the basis to recommend rock lobster TACs for all four islands of the Tristan da Cunha Group. The application of these OMPs together with the most recent standardized CPUE data result in the following ... Read more
Recommendations on rock lobster TACs for Tristan and nightingale islands for the 2018/19 season

Author: Butterworth, Doug ; Johnston, Susan Date: Jul 2018 OMPs have recently been accepted as the basis to recommend TACs for Tristan and Nightingale islands. The application of the OMPs together with the most recent standardized CPUE data result in the following TACs: The OMP for Tristan sets the ... Read more
Assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity to include data from 1997 to 2017

Author: Brandão, Anabela ; Butterworth, Doug Date: Oct 2018 The assessment of the Prince Edward Islands (PEI) toothfish (Dissostichus eleginoides) resource carried out by Brandão and Butterworth (2017) is updated to take further data now available for 2017 into account. This update also incorporates ... Read more
Refined trends in poaching for West Coast rock lobster based upon information from the DAFF compliance “new” database for the period 2012 to 2017, and final poaching trends used for updated assessments and projections

Author: Brandão, Anabela ; Butterworth, Doug ; Johnston, Susan Date: Nov 2018 GLM methods are applied to the DAFF “new” compliance database in which policing effort is linked to confiscations taken as well as to the “old” compliance database on confiscations (and abandonments) and on policing effort (but restricting ... Read more
Analysis of tagging data of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

Author: Brandão, Anabela ; Butterworth, Doug Date: Mar 2018 Some simple analyses of the tag-recapture data available for the PEI toothfish resource are undertaken. Somatic growth rate seems to be less than that in Subarea 48.3 which has previously been assumed for assessments of the PEI resource. ... Read more
Further analysis of tagging data of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands region

Author: Brandão, Anabela ; Butterworth, Doug Date: Aug 2018 Analyses of the tag-recapture data available for the PEI toothfish resource are undertaken to evaluate a vessel effect and an area effect on tag recovery rates as well as to determine a possible difference in tagging “success” between the two ... Read more
GLMM standardised trotline CPUE series to be used as input to develop Operating Models for toothfish (Dissostichus eleginoides) in the Prince Edward Islands EEZ

Author: Brandão, Anabela ; Butterworth, Doug Date: Sep 2018 An updated GLMM standardisation of trotline toothfish CPUE data is presented which includes new data for the 2017 “fishing”-year. Updated standardisation of the trotline CPUE data shows a marked decrease from the 2015 to the 2016 season, with ... Read more
Adjustments made to recent catches and CPUE for West Coast Rock Lobster in Areas 3+4 and 5+6

Author: Butterworth, Doug ; Glazer, Jean ; Johnston, Susan ; van Zyl, Daniel Date: Aug 2018 During the 2017/18 fishing season, some catches made in Area 3+4 by trapboats were landed in Area 5+6 as hoopnet catches. This document reports the methodology used and the results obtained from an attempt to correct the catches reported for ... Read more
Updated analyses of the Fisheries Independent Monitoring Survey data of the Rock Lobster resource of South Africa to include the 2017/18 season

Author: Brandão, Anabela ; Butterworth, Doug Date: Jul 2018 Analyses of FIMS data are updated to include data for the 2016/17 and 2017/18 seasons. Results show an increase from the last season’s index for the FIMS relative abundance indices in the Cape Point Zone, although this increase follows from ... Read more
Investigation of the assumed similar efficiency of policing effort types for West Coast rock lobster

Author: Brandão, Anabela ; Butterworth, Doug Date: Apr 2018 The assumption made that the efficiency for each of the policing effort type is similar which is assumed in the GLM approach to obtain confiscations per unit policing effort index by Brandão et al. (2016) is investigated. Results show that ... Read more
Refined trends in poaching for West Coast rock lobster using information from the “new” database for the period 2012 to 2017

Author: Brandão, Anabela ; Butterworth, Doug Date: Aug 2018 GLM methods are applied to the “new” compliance database in which policing effort is linked to confiscations taken as well as to the “old” compliance database on confiscations (and abandonments) and on policing effort (but restricting the ... Read more
Stochastic projections for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

Author: Brandão, Anabela ; Butterworth, Doug Date: Oct 2018 For stochastic future recruitment and for annual catch levels of 0, 200, 400, 575 and 675 tonnes, the median of the spawning biomass estimates for the New Base case model drops initially, but returns to its current level within a decade. ... Read more
Investigation of the comparability of the West Coast rock lobster compliance databases (“new” and “old”)

Author: Brandão, Anabela ; Butterworth, Doug Date: Aug 2018 The “old” and “new” compliance databases are compared, especially in the context of inferring the number of unsuccessful (“zero”) instances of detecting illegally caught west coast rock lobster. A proposal is made for the proportion of such ... Read more
Results for the updated trends in policing effort and the number of confiscations for West Coast rock lobster using the “old” database for the period 2008 to 2017

Author: Brandão, Anabela ; Butterworth, Doug Date: Aug 2018 GLM methods are applied to compliance data (the “old” database) on confiscations (and abandonments) and on policing effort to estimate recent trends in the amount of rock lobster that is poached. Data for the period in 2016 when Operation ... Read more
Considerations on management of the chokka squid jig fishery with reference to the pending FRAP 2020 allocation of fishing rights and implementation of Small Scale Fisheries

Author: Mwicigi, Jean ; Durholtz, Deon ; Glazer, Jean ; Butterworth, Doug Date: Aug 2018 The South African squid jig fishery is primarily managed using effort control. The management objective for the fishery is to cap effort at a level that secures the greatest catch, on average, in the longer term without exposing the resource ... Read more
UCT Libraries – social justice through OERs

Author: Nyahodza, Lena Date: 06 Mar 2019 A presentation on the purpose of sharing OREs at the University of Cape Town via the open access institutional repository (OpenUCT) and the impact these OERs may have on human development through self-directed learning. Read more c b
UCT Libraries – social justice through OERs

Author: Claassen, Jill Date: 06 Mar 2019 A presentation on the impact open educational resources (OERs) have in human development to support social justice. The presenter relates how open education has potential to alleviate poverty on the African continent. Read more
UCT Libraries – social justice through OERs

Author: Raju, Reggie Date: 2019 A presentation on the open publishing of open textbooks by UCT academics on UCT Libraries open publishing platform (Open Monograph Press) to alleviate cost of text books for UCT students. Read more c b
OMP-18 development: selecting an interim Harvest Control Rule for directed sardine

Author: de Moor, Carryn Date: 2018 Presentation on OMP-18 development: selecting an interim Harvest Control Rule for directed sardine held at SWG-PEL Meeting 4thJuly 2018. Read more
Issues for universities using private companies for online education

Author: Czerniewicz, Laura ; Walji, Sukaina Date: Feb 2019 This briefing is aimed at universities who are thinking of using - or already using - private companies to develop or expand their online programmes or courses. It raises the issues to be thought about and the implications of decisions made, ... Read more c b n