Effects of resource limitation on habitat usage by the browser guild in Hluhluwe-iMfolozi Park, South Africa
Resource depletion and association increases in interspecific competition are likely to influence differential habitat usage amongst a guild. We tested some prominent theoretical concepts using observed differenced in seasonal habitat use amongst the savannah browser guild (elephant, giraffe, impala, kudu and nyala) in Hluhluwe-iMfolozi Park, South Africa. Herbivore locations (n= 3108) were recorded over 2 […]
Range movements of giraffe in the Luangwa Valley, Zambia
The range movements of a small population of giraffe in the Luangwa Valley in eastern Zambia were studied over a period of 4.5 years. The majority of the adults of both sexes were found to move over distances in excess of 40 km though only two, both males, moved farther than 50 km. The average […]
The maximum attainable body size of herbivorous mammals: morphophysiological constraints on foregut, and adaptations of hindgut fermenters
An oft-cited nutritional advantage of large body size is that larger animals have lower relative energy requirements and that, due to their increased gastrointestinal tract (GIT) capacity, they achieve longer ingesta passage rates, which allows them to use forage of lower quality. However, the fermentation of plant material cannot be optimized endlessly; there is a […]
Giraffe feeding on Acacia flowers: predation or pollination?
Consumption of flowers by the following four browsing ruminant species was monitored for two years in a southern African savannah: giraffe (Giraffa camelopardalis Linnaeus), kudu (Tragelaphus strepsiceros Pallas), impala (Aepyceros melampus Lichtenstein) and steenbok (Raphicerus campestris Thunberg). Flowers of Acacia nigrescens Oliver are an important food resource to giraffe in the late dry season. This […]
Subfamily Giraffinae – Giraffe
Subfamily Giraffinae is a monotypic subfamily, represented by a single surviving species, the Giraffe Giraffa camelopardalis. The Giraffe , Giraffa camelopardalis, is the only extant representative of the genus Giraffa. Together with the only other living giraffid, the Okapi Okapia johnstoni, they represent the extant members of a previously more diverse group. This chapter covers […]
Foraging ecologies of giraffe (Giraffa camelopardalis reticulata) and camels (Camelus dromedarius) in northern Kenya: effects of habitat structure and possibilities for competition?
The foraging ecologies of reticulated giraffe (Giraffa camelopardalis reticulata) and domestic camels (Camelus dromedarius) were examined in the Laikipia District of Kenya, where these species have recently become sympatric. Camels increased popularity in the region has lead to concerns about their environmental impacts and possible competition with wild giraffe for resources. We gathered foraging data […]
The digestive morphophysiology of wild, free-living, giraffes
We have measured rumen-complex (rumen, reticulum, omasum, abomasum) and intestine (small and large combined) mass in 32 wild giraffes of both sexes with body masses ranging from 289 to 1441 kg, and parotid gland mass, tongue length and mass, masseter and mandible mass in 9 other giraffes ranging in body mass from 181 to 1396 […]