OpenUCT Home
→
Browsing by Author

Browsing by Author "Butterworth, Douglas"

Now showing items 1-4 of 4

An approach to weighting the various Operating Models in a Reference Set in inverse relation to the similarity of their results

Author: Vrancken, Candysse ; Butterworth, Douglas Date: 2017 How to weight results from different OMs in getting a “best” representation across their differing results is a problem not only in fisheries but also in Climate Change. We attempt here to borrow an approach from the latter field and compare ... Read more
Claim by Pichegru et al. that marine no-take zone benefits penguins remains premature

Author: Butterworth, Douglas ; Brandao, Anabela ; de Moor, Carryn ; Robinson, William Date: 2010 Pichegru et al. (2010), and a follow up comment by Ryan et al. (2010), make strongly stated claims that closures to pelagic fishing around islands with penguin breeding colonies lead to rapid improvements in those penguin populations. These ... Read more
Developing informative prior distributions for the bias of hydro-acoustic survey estimates of the biomass of the South African round herring population

Author: de Moor, Carryn ; Coetzee, Janet ; Butterworth, Douglas Date: 2022 Prior distributions for the bias of the hydro‐acoustic survey estimates of the biomass of the South African round herring are developed by considering the bias associated with the individual sources of error Read more
Summary of issues pertinent to a decision on possible adjustment of the maximum directed sardine catch allowance west of Agulhas for 2016

Author: Coetzee, Janet ; Butterworth, Douglas ; van der Lingen, Carl ; de Moor, Carryn Date: 2016 This paper summarises proposals on the many and varied issues that need to be addressed in reaching a decision on a possible increase in the maximum directed sardine catch that may be taken west of Cape Agulhas during 2016. It also includes ... Read more

Now showing items 1-4 of 4

Browse

All of OpenUCT

Browsing by Author "Butterworth, Douglas"

Browsing by Author "Butterworth, Douglas"

Browse

All of OpenUCT