164 Works

Data from: Competitors and predators alter settlement patterns and reproductive success of an intraguild prey

Chiara Morosinotto, Alexandre Villers, Robert L. Thomson, Rauno Varjonen & Erkki Korpimäki
The spatial distribution of predators is affected by intra- and interspecific interactions within the predator guild. Studying these interactions under fluctuating food availability, while taking habitat characteristics into account, offers a quasi-experimental set up to determine the relative impact of con- and heterospecifics on reproductive success of predators. We analyzed the settlement decisions and reproductive success of Eurasian pygmy owls (Glaucidium passerinum) in the presence of both breeding conspecifics and their competitor and intraguild predator,...

Data from: Projected distributions of Southern Ocean albatrosses, petrels and fisheries as a consequence of climatic change

Lucas Krüger, J. A. Ramos, J. C. Xavier, D. Grémillet, J. González-Solís, M. V. Petry, R. A. Phillips, R. M. Wanless & V. H. Paiva
Given the major ongoing influence of environmental change on the oceans, there is a need to understand and predict the future distributions of marine species in order to plan appropriate mitigation to conserve vulnerable species and ecosystems. In this study we use tracking data from seven large seabird species of the Southern Ocean (Black-browed Albatross Thalassarche melanophris, Grey-headed Albatross T. chrysostoma, Northern Giant Petrel Macronectes halli, Southern Giant Petrel M. giganteus, Tristan Albatross Diomedea dabbenena...

Data from: The costs of kleptoparasitism: a study of mixed-species seabird breeding colonies

Davide Gaglio, Richard B. Sherley, Timothée R. Cook, Peter G. Ryan & Tom Flower
Mixed-species assemblages are common in nature, providing mutual benefits to associating species including anti-predator advantages or resource facilitation. However, associating with other species may also impose costs through kleptoparasitism (food theft). Identification of these costs, and how they vary when different species breed alongside one another, is essential to understand the payoffs of mixed-species assemblages. We explore the costs of kleptoparasitism for greater crested terns Thalasseus bergii provisioning offspring at a single-species colony, where individuals...

Data from: Phenotypic and genotypic variation across a stable white-eye (Zosterops sp.) hybrid zone in central South Africa

Graeme Oatley, Dawie H. De Swardt, Rick J. Nuttal, Timothy M. Crowe & Rauri C.K. Bowie
The interbreeding of two species after a period of separation (secondary contact) most often results in stable areas of hybridization or tension zones characterized by selection against hybrid individuals. Three plumage forms of Zosterops meet and interbreed in central South Africa. Here we examine how phenotypic measures (biometric and plumage) and genotypic markers (mitochondrial and nuclear DNA) change through a putative hybrid zone located in the area where the ranges of the Orange River white-eye...

Data from: Caching reduces kleptoparasitism in a solitary, large felid

Guy Balme, Jennifer R. B. Miller, Ross T. Pitman, Luke T. B. Hunter & Guy A. Balme
Food caching is a common strategy used by a diversity of animals, including carnivores, to store and/or secure food. Despite its prevalence, the drivers of caching behaviour, and its impacts on individuals, remain poorly understood, particularly for short-term food cachers. Leopards Panthera pardus exhibit a unique form of short-term food caching, regularly hoisting, storing and consuming prey in trees. We explored the factors motivating such behaviour among leopards in the Sabi Sand Game Reserve, South...

Data from: Interspecific social information use in habitat selection decisions among migrant songbirds

Jakub Szymkowiak, Robert L. Thomson & Lechosław Kuczyński
The presence of conspecifics is a social cue frequently used by songbirds in breeding-site selection. In migratory species, conspecific attraction is not possible for individuals that arrive first to breeding grounds, but these individuals may use information from ecologically similar heterospecifics. Resident tits (Paridae) are known to provide cues for migratory songbirds, however, the relevance of resident settlement decisions decreases as the season progresses. We investigated heterospecific attraction within migrant songbirds, and examined whether later...

Data from: The effects of tourist and boat traffic on parrot geophagy in lowland Peru

Alan T. K. Lee, Stuart J. Marsden, Emma Tatum-Hume & Donald J. Brightsmith
Ecotourism generates important revenue in many developing economies, but poorly regulated ecotourism can threaten the long-term viability of key biological resources. We determined the effects of tourism, boat traffic, and natural disturbances on parrot geophagy (soil consumption) across seven riverine claylicks in the lowlands of Madre de Dios, Peru. Claylick use significantly decreased when visitors did not follow good practice guidelines and tourist numbers exceeded the capacity of the observation blinds. Otherwise, tourist presence and...

Data from: A new subfamily classification of the Leguminosae based on a taxonomically comprehensive phylogeny

, Anne Bruneau, Nasim Azani, Marielle Babineau, Edeline Gagnon, Carole Sinou, Royce Steeves, Erin Zimmerman, C. Donovan Bailey, Lynsey Kovar, Madhugiri Nageswara-Rao, Hannah Banks, RuthP. Clark, Manuel De La Estrella, Peter Gasson, GeoffreyC. Kite, BenteB. Klitgaard, GwilymP. Lewis, Danilo Neves, Gerhard Prenner, María De Lourdes Rico-Arce, ArianeR. Barbosa, Maria Cristina López-Roberts, Luciano Paganucci De Queiroz, PétalaG. Ribeiro … & Tingshuang Yi
The classification of the legume family proposed here addresses the long-known non-monophyly of the traditionally recognised subfamily Caesalpinioideae, by recognising six robustly supported monophyletic subfamilies. This new classification uses as its framework the most comprehensive phylogenetic analyses of legumes to date, based on plastid matK gene sequences, and including near-complete sampling of genera (698 of the currently recognised 765 genera) and ca. 20% (3696) of known species. The matK gene region has been the most...

Data from: Effective implementation of age restrictions increases selectivity of sport hunting of the African lion

Colleen M. Begg, Jennifer R. B. Miller & Keith S. Begg
1. Sport hunting of wildlife can play a role in conservation but can also drive population declines if not managed sustainably. Previous simulation modelling found that large felid species could theoretically be hunted sustainably by restricting harvests to older individuals that have likely reproduced. Several African countries currently use age-based hunting for lions although the outcomes have yet to be evaluated in a wild population. 2. Here we provide the first empirical evidence that a...

Data from: Vulnerability mapping as a tool to manage the environmental impacts of oil and gas extraction

Surina Esterhuyse, Frank Sokolic, Nola Redelinghuys, Marinda Avenant, Andrzej Kijko, Jan Glazewski, Lisa Plit, Marthie Kemp, Ansie Smit, A. Tascha Vos & Michael J. Von Maltitz
Various biophysical and socio-economic impacts may be associated with unconventional oil and gas (UOG) extraction. A vulnerability map may assist governments during environmental assessments, spatial planning and the regulation of UOG extraction, as well as decision-making around UOG extraction in fragile areas. A regional interactive vulnerability map was developed for UOG extraction in South Africa. This map covers groundwater, surface water, vegetation, socio-economics and seismicity as mapping themes, based on impacts that may emanate from...

Data from: High human papillomavirus (HPV) prevalence in South African adolescents and young women encourages expanded HPV vaccination campaigns

Zizipho Z.A. Mbulawa, Cari Van Schalkwyk, Nai-Chung Hu, Tracy L. Meiring, Shaun Barnabas, Smritee Dabee, Heather Jaspan, Jean-MAri Kriek, Shameem Z. Jaumdally, Etienne Muller, Linda-Gail Bekker, David A. Lewis, Janan Dietrich, Glenda Gray, Jo-Ann S. Passmore, Anna-Lise Williamson & Zizipho Z. A. Mbulawa
Objectives: To investigate prevalence of cervical human papillomavirus (HPV) genotypes to inform HPV vaccination strategy in South Africa and to study factors associated with HPV prevalence. Methods: Sexually active, HIV-negative women, aged 16-22 years recruited from Soweto (n=143) and Cape Town (n=148) were tested for cervical HPV and other genital infections. Results: Overall HPV prevalence was 66.7% (194/291) in young women. Cape Town women were more likely to have multiple HPV infections than the Soweto...

Data from: A global perspective on the trophic geography of sharks

Christopher Stephen Bird, Ana Veríssimo, Sarah Magozzi, Kátya G. Abrantes, Alex Aguilar, Hassan Al-Reasi, Adam Barnett, Dana M. Bethea, Gérard Biais, Asuncion Borrell, Marc Bouchoucha, Mariah Boyle, Edward J. Brooks, Juerg Brunnschweiler, Paco Bustamante, Aaron Carlisle, Diana Catarino, Stéphane Caut, Yves Cherel, Tiphaine Chouvelon, Diana Churchill, Javier Ciancio, Julien Claes, Ana Colaço, Dean L. Courtney … & Clive N. Trueman
Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in shark biomass may extend across broader geographic ranges if shark taxa display common behavioural traits. By tracking the original site of photosynthetic fixation of carbon atoms that were ultimately assimilated into muscle tissues of 5,394 sharks from 114 species, we identify globally consistent biogeographic traits...

Data from: Variable molecular markers for the order Mantophasmatodea (Insecta)

Serena E. Dool, Sven Künzel, Martin Haase, Mike D. Picker, Monika J.B. Eberhard & Monika J B Eberhard
The recently discovered insect order Mantophasmatodea currently comprises 19 Southern African species. These mainly occur in allopatry, have high levels of colour polymorphism and communicate via species- and gender-specific vibratory signals. High levels of interspecific morphological conservatism mean that cryptic species are likely to be uncovered. These aspects of Mantophasmatodean biology make them an ideal group in which to investigate population divergence due to habitat-specific adaptation, sexual selection and potentially sensory speciation. Lack of appropriate...

Data from: The future of food from the sea

Tracey Mangin, Christopher Costello, Ling Cao, Stefan Gelcich, Miguel A. Cisneros-Mata, Christopher M. Free, Halley E. Froehlich, Christopher D. Golden, Gakushi Ishimura, Jason Maier, Ilan Macadam-Somer, Michael C. Melnychuk, Masanori Miyahara, Carryn L. De Moor, Rosamond Naylor, Linda Nøstbakken, Elena Ojea, Erin O’Reilly, Ana M. Parma, Andrew J. Plantinga, Shakuntala H. Thilsted & Jane Lubchenco
Global food demand is on the rise and serious questions remain about whether supply can increase sustainably. Land-based expansion is possible, but may exacerbate climate change and biodiversity loss and compromise the delivery of other ecosystem services. As food from the sea represents only 17% of current edible meat production, we ask: How much food can we expect the ocean to sustainably produce by 2050? We examine the main food-producing sectors in the ocean—wild fisheries,...

Registration Year

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Resource Types

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Affiliations

  • University of Cape Town
    164
  • University of Cambridge
    10
  • French National Centre for Scientific Research
    10
  • University of Pretoria
    9
  • Stellenbosch University
    8
  • South African National Biodiversity Institute
    7
  • Royal Society for the Protection of Birds
    7
  • Nelson Mandela University
    7
  • University of the Witwatersrand
    7
  • Panthera Corporation
    6