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Gina Hayward

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Papers by Gina Hayward

Research paper thumbnail of The Impact of Upgrading Roads on the Conservation of the Threatened Flightless Dung Beetle, Circellum bacchus (F.) (Coleoptera: Scarabaeidae)

The Coleopterists Bulletin, 2010

ABSTRACT The flightless dung beetle Circellum bacchus (Fabricius, 1781) is a unique, ectothermic ... more ABSTRACT The flightless dung beetle Circellum bacchus (Fabricius, 1781) is a unique, ectothermic dung beetle that is of conservation concern due to a massive decline in its distribution. Very little is known about its conservation ecology and the upgrade of roads in one of its last strongholds, South Africa's Addo Elephant National Park, led to concerns that road kill was threatening the population because drivers could not see the beetles due to their similar colour as the upgraded roads. We tested whether the upgraded, black, tar roads led to more road kills than the original sandy-red, gravel roads using counts of live and dead beetles along transects through similar habitats of the park. There was no significant difference between the number of live and dead dung beetles on the tar or gravel roads illustrating that the infrastructure improvements themselves are not threatening the persistence of the species. The high levels of vehicle-derived mortality along roads, however, suggest that road kills may be a threatening process with potentially 100,000 C. bacchus killed on roads annually (although 45,000 is a more conservative estimate). Further research is needed to ascertain whether this off-take is sustainable and to formulate mitigation measures.

Research paper thumbnail of Do fences constrain predator movements on an evolutionary scale? Home range, food intake and movement patterns of large predators reintroduced to Addo Elephant National Park, South Africa

Biodiversity and Conservation, 2009

Research paper thumbnail of Potential amplification of territorial advertisement markings by black-backed jackals (Canis mesomelas)

Behaviour, 2010

... Matt W. Hayward1,2,3) & Gina J. Hayward1) (1 Mammal Research Institute, Polish Academy of... more ... Matt W. Hayward1,2,3) & Gina J. Hayward1) (1 Mammal Research Institute, Polish Academy of Science, 17-230 Białowie˙za, Poland; 2 Centre for ... However, intruding females in oestrus may be attracted to approach terri-tory owners (Gosling & Roberts, 2001a; Rich & ...

Research paper thumbnail of The successful reintroduction of leopard Panthera pardus to the Addo Elephant National Park

African Journal of Ecology, 2007

Research paper thumbnail of Activity patterns of reintroduced lion Panthera leo and spotted hyaena Crocuta crocuta in the Addo Elephant National Park, South Africa

African Journal of Ecology, 2007

Research paper thumbnail of The impact of tourists on lion Panthera leo behaviour, stress and energetics

Research paper thumbnail of Do Lions Panthera leo Actively Select Prey or Do Prey Preferences Simply Reflect Chance Responses via Evolutionary Adaptations to Optimal Foraging?

Research paper thumbnail of The Impact of Upgrading Roads on the Conservation of the Threatened Flightless Dung Beetle, Circellum bacchus (F.) (Coleoptera: Scarabaeidae)

The Coleopterists Bulletin, 2010

ABSTRACT The flightless dung beetle Circellum bacchus (Fabricius, 1781) is a unique, ectothermic ... more ABSTRACT The flightless dung beetle Circellum bacchus (Fabricius, 1781) is a unique, ectothermic dung beetle that is of conservation concern due to a massive decline in its distribution. Very little is known about its conservation ecology and the upgrade of roads in one of its last strongholds, South Africa's Addo Elephant National Park, led to concerns that road kill was threatening the population because drivers could not see the beetles due to their similar colour as the upgraded roads. We tested whether the upgraded, black, tar roads led to more road kills than the original sandy-red, gravel roads using counts of live and dead beetles along transects through similar habitats of the park. There was no significant difference between the number of live and dead dung beetles on the tar or gravel roads illustrating that the infrastructure improvements themselves are not threatening the persistence of the species. The high levels of vehicle-derived mortality along roads, however, suggest that road kills may be a threatening process with potentially 100,000 C. bacchus killed on roads annually (although 45,000 is a more conservative estimate). Further research is needed to ascertain whether this off-take is sustainable and to formulate mitigation measures.

Research paper thumbnail of Do fences constrain predator movements on an evolutionary scale? Home range, food intake and movement patterns of large predators reintroduced to Addo Elephant National Park, South Africa

Biodiversity and Conservation, 2009

Research paper thumbnail of Potential amplification of territorial advertisement markings by black-backed jackals (Canis mesomelas)

Behaviour, 2010

... Matt W. Hayward1,2,3) & Gina J. Hayward1) (1 Mammal Research Institute, Polish Academy of... more ... Matt W. Hayward1,2,3) & Gina J. Hayward1) (1 Mammal Research Institute, Polish Academy of Science, 17-230 Białowie˙za, Poland; 2 Centre for ... However, intruding females in oestrus may be attracted to approach terri-tory owners (Gosling & Roberts, 2001a; Rich & ...

Research paper thumbnail of The successful reintroduction of leopard Panthera pardus to the Addo Elephant National Park

African Journal of Ecology, 2007

Research paper thumbnail of Activity patterns of reintroduced lion Panthera leo and spotted hyaena Crocuta crocuta in the Addo Elephant National Park, South Africa

African Journal of Ecology, 2007

Research paper thumbnail of The impact of tourists on lion Panthera leo behaviour, stress and energetics

Research paper thumbnail of Do Lions Panthera leo Actively Select Prey or Do Prey Preferences Simply Reflect Chance Responses via Evolutionary Adaptations to Optimal Foraging?

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