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Lorien Pichegru
DST Systems
ForagingEcologySpheniscus demersusFisheryBiology
52Publications
16H-index
1,013Citations
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Publications 56
Newest
#1Peter G. Ryan (UCT: University of Cape Town)H-Index: 50
#2Lorien PichegruH-Index: 16
Last. Coleen L. Moloney (UCT: University of Cape Town)H-Index: 30
view all 4 authors...
1 CitationsSource
#1Richard B. Sherley (University of Exeter)H-Index: 12
Last. Henning WinkerH-Index: 16
view all 13 authors...
African Penguin Spheniscus demersus numbers have declined steadily over three generations, resulting in a loss of nearly 60% since of 1989. The breeding population reached an historic low of ~20,850 pairs in 2019. We use count data and JARA, a generalized Bayesian state-space tool for estimating extinction risk estimates under IUCN Red List Criterion A, to assess the current status of the African penguin population at a global scale. We then deconstruct the overall decline in time and space to i...
Source
#1Alistair M. McInnes (DST Systems)H-Index: 4
#2Andréa ThiebaultH-Index: 5
Last. Pierre A. Pistorius (DST Systems)H-Index: 5
view all 7 authors...
2 CitationsSource
#1Simeon L. Hill (BAS: British Antarctic Survey)H-Index: 20
#2Jefferson T. Hinke (NOAA: National Oceanic and Atmospheric Administration)H-Index: 14
Last. Norman Ratcliffe (BAS: British Antarctic Survey)H-Index: 23
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Ecosystem-based management of fisheries aims to allow sustainable use of fished stocks while keeping impacts upon ecosystems within safe ecological limits. Both the FAO Code of Conduct for Responsible Fisheries and the Aichi Biodiversity Targets promote these aims. We evaluate implementation of ecosystem-based management in six case study fisheries in which potential indirect impacts upon bird or mammal predators of fished stocks are well publicized and well studied. In particular we consider th...
1 CitationsSource
#1Ralph Eric Thijl Vanstreels (DST Systems)H-Index: 10
#2Lorien Pichegru (DST Systems)H-Index: 16
Last. Pierre A. Pistorius (DST Systems)H-Index: 5
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ABSTRACTAfrican penguins (Spheniscus demersus) are pursuit-diving seabirds endemic to the coast of southern Africa. In this study, we investigate the presence of seashells and anthropogenic debris ...
Source
#1Ralph E.T. Vanstreels (UCT: University of Cape Town)H-Index: 1
#1Ralph Eric Thijl Vanstreels (UCT: University of Cape Town)H-Index: 10
Last. Pierre A. Pistorius (UCT: University of Cape Town)H-Index: 5
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The African Penguin Spheniscus demersus is an endangered seabird endemic to southern Africa, and killing sprees by terrestrial predators have been one of the main threats for its mainland colonies....
1 CitationsSource
#1Richard B. Sherley (University of Exeter)H-Index: 12
Last. Henning Winker (UCT: University of Cape Town)H-Index: 16
view all 13 authors...
The Cape Gannet Morus capensis is one of several seabird species endemic to the Benguela upwelling ecosystem (BUS) but whose population has recently decreased, leading to an unfavourable IUCN Red L...
1 CitationsSource
#1Alistair M. McInnes (UCT: University of Cape Town)H-Index: 4
#2Peter G. Ryan (UCT: University of Cape Town)H-Index: 50
Last. Lorien Pichegru (NMU: Nelson Mandela Metropolitan University)H-Index: 16
view all 4 authors...
Source
#1Gwendoline Traisnel (Percy FitzPatrick Institute of African Ornithology)H-Index: 1
#2Lorien Pichegru (Percy FitzPatrick Institute of African Ornithology)H-Index: 16
Optimal foraging theory suggests that the environment (e.g. distribution of resource patches) will shape an individual's decision to exploit the resource available or explore other locations. Together with the environment and the social context, individual characteristics such as personality have been recently discovered to affect behaviour, offering new insights in the field of behavioural ecology. In many species, personality types differ in breeding success, and foraging behaviour could poten...
1 CitationsSource
#1Amanda T. LombardH-Index: 27
#2Rosemary A. Dorrington (Rhodes University)H-Index: 12
Last. Tayla GinsburgH-Index: 1
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In 2016, South Africa became the first African country to draft Marine Spatial Planning (MSP) legislation. The underlying legal framework supports the achievement of ecological, social and economic objectives, but a national policy to grow the oceans economy provides a challenge for ecosystem-based approaches to MSP. During the 2018 International Marine Conservation Congress in Borneo, we convened a special session to discuss particular challenges that will likely apply to any developing country...
2 CitationsSource
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