The influence of active bomas on habitat choice of the common warthog (Phacochoerus africanus)

The common warthog (Phachocoerus africanus) is a relatively long-legged pig with noticeable curved tusks, a short neck and three pairs of facial warts. It has four recognized subspecies. The common warthog is a non-migratory ungulate living on the African savannah. It is a hindgut fermenter and predominantly dependent on high-quality foods. It prefers open areas for grazing but use bushes for cover. Warthogs prefer former bomas because of the nutrient enrichment that has occurred there and they also distribute their faeces close to their feeding grounds. Warthogs are a pioneer species when it comes to recolonizing abandoned bomas. Warthogs are bearers of several diseases harmful to livestock and are therefore often chased from active bomas. The aim of this study was to investigate how active bomas influence the habitat choice of warthogs. The study was carried out in the Maasai Mara National Reserve and the adjoining Koyake group ranch, in august 2003 and May-June 2004, using well defined study areas; transects. Results showed that warthogs favour the transects farthest away from the bomas. Warthogs probably favour the security of grazing among other species in order to avoid being caught by predators. Other herbivores might also feed on plant species less attractive to warthogs and thereby allowing plant species that warthogs favour to grow

Landscape into Eco Art: Articulations of Nature Since the ‘60s by Mark A. Cheetham

Review of Mark A. Cheetham\u27s Landscape into Eco Art: Articulations of Nature Since the \u2760

That Courage is not inconsistent with Caution: Foreign Currency Hedging for Superannuation Funds

Surveys of Australian superannuation funds verify that most international bond holdings, but not equity holdings, are hedged for currency risk. We compare the mean-variance efficiency of this practice with two alternative strategies: a conventional forward hedge; and a selective hedge triggered by the sign of the interest differential. These strategies produce optimal allocations which stochastically dominate the restricted portfolio according to Barrett-Donald (2003) tests. The advantages of alternative hedging strategies remain when the vector of sample mean returns is replaced by forecasts. Selective hedging works best for equities; conventional hedging for bonds. Adding unhedged bonds does not improve outcomescurrency hedging; portfolio allocation; stochastic dominance

Nature, Place, and Story: Rethinking Historic Sites in Canada by Claire Campbell

Review of Claire Campbell\u27s Nature, Place, and Story: Rethinking Historic Sites in Canada