H
Halszka Hrabar
Researcher at Mammal Research Institute
Publications - 5
Citations - 1859
Halszka Hrabar is an academic researcher from Mammal Research Institute. The author has contributed to research in topics: Mopane & Pruning. The author has an hindex of 5, co-authored 5 publications receiving 1681 citations. Previous affiliations of Halszka Hrabar include University of Pretoria.
Papers
More filters
Journal ArticleDOI
Determinants of woody cover in African savannas
Mahesh Sankaran,Niall P. Hanan,Robert J. Scholes,Jayashree Ratnam,David J. Augustine,Brian S. Cade,Jacques Gignoux,Steven I. Higgins,Xavier Le Roux,Fulco Ludwig,Jonas Ardö,Feetham Banyikwa,Andries Bronn,Gabriela Bucini,Kelly K. Caylor,Michael B. Coughenour,Alioune Diouf,Wellington N. Ekaya,Christie J. Feral,Edmund C. February,Peter G. H. Frost,Pierre Hiernaux,Halszka Hrabar,Kristine L. Metzger,Herbert H. T. Prins,Susan Ringrose,William B. Sea,Jörg Tews,Jeff Worden,Nick Zambatis +29 more
TL;DR: It is shown, using data from 854 sites across Africa, that maximum woody cover in savannas receiving a mean annual precipitation (MAP) of less than ∼650 mm is constrained by, and increases linearly with, MAP.
Journal ArticleDOI
Differential effects of defoliation by mopane caterpillars and pruning by African elephants on the regrowth of Colophospermum mopane foliage
TL;DR: Despite the differences in regrowth characteristics after pruning and defoliation, mopane plants showed no apparent trade-off in investment between tolerance and resistance after either herbivory type, as neither regrowth nor chemical defence occurred at the expense of the other.
Journal ArticleDOI
Dynamics of a protected black rhino (Diceros bicornis) population: Pilanesberg National Park, South Africa
Halszka Hrabar,Johan T. du Toit +1 more
TL;DR: It is concluded that the Pilanesberg black rhinoceros population is showing the first signs of density dependence and it is proposed that black rhino conservators should monitor the percentage of cows achieving maternal success to detect early indications of density dependent resource limitation and use this as a criteria for decisions regarding metapopulation management.
Journal ArticleDOI
Interactions between megaherbivores and microherbivores : elephant browsing reduces host plant quality for caterpillars
TL;DR: Results showed that, after controlling for differences in canopy volume, the density of egg masses was almost halved in mopane woodlands recovering from severe elephant browsing in the previous season, despite the regrowth on heavily browsed trees having lower tannin:protein ratios and longer shoots.
Journal ArticleDOI
Intraspecific host preferences of mopane moths (Imbrasia belina) in mopane (Colophospermum mopane) woodland
TL;DR: Host choice was based on the most obvious measure of resource abundance, namely tree size, as expected for an outbreak species, since resource availability rather than nutritional quality is likely to be the primary determinant of larval survival.