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Browsing by Author "Robinson, William"

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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
Data inputs for the African Penguin Spheniscus demersus model to be coupled to the pelagic OMP

Author: Plagányi, Éva E ; Robinson, William Date: 2008 This document serves as an updated compilation of all data currently available as inputs to the African penguin spatial model which is to be coupled to the pelagic OMP. The data are presented here together with some comments as to how they ... Read more
Modelling the impact of the South African small pelagic fishery on African penguin dynamics

Author: Robinson, William Date: 2012 This paper incorporates a complete description of the penguin–fish interaction model for Robben Island. All data included are described in full in Section 2. The model equations are described in detail in Section 3. Base case results are ... Read more
Proposed performance statistics for evaluating the effects of pelagic fishing on African Penguin populations

Author: Plagányi, Éva E ; Robinson, William Date: 2008 Given the move towards adopting an ecosystem approach to fisheries in the pelagic sector, the new pelagic OMP needs to be tested in the light of not only the risk parameters as considered previously, along with catch statistics for the anchovy ... Read more
Update of available data for the African Penguin Spheniscus demersus model to be coupled to the pelagic OMP

Author: Plagányi, Éva E ; Robinson, William Date: 2008 This document serves as an updated compilation of all data currently available as inputs to the African penguin spatial model (MCM/2008/SWG-PEL/21b) which is to be coupled to the pelagic OMP. The data are presented here together with some ... Read more
Update to the Robben Island moult count series for 2011

Author: Robinson, William Date: 2011 The 2010/2011 penguin moult season conventionally runs from 1 July 2010 to 30 June 2011. During this period, counts of moulting birds were made on 20 occasions (Table 1). These counts have now been converted to aggregates for the year using ... Read more
Updating the Dassen Island and Robben Island penguin moult series with data from the 2011/2012 season

Author: Robinson, William Date: 2012 The moult count time-series for Dassen Island and Robben Island, historically the two most important African penguin colonies in the Western Cape, are updated with data collected during the 2011/2012 season (1 july 2011 to 30 June 2012). ... Read more

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Browsing by Author "Robinson, William"

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