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It is listed on the IUCN Red List as least concern due to its widespread range and adaptability, although it is still persecuted as a livestock predator and rabies vector. [ 1 ] Compared to members of the genus Canis , the black-backed jackal is a very ancient species, and has changed little since the Pleistocene , [ 6 ] being the most basal ...
The lion is the world's second-largest big cat and serves as an apex land predator in Africa. [1] [2] The saltwater crocodile is the largest living reptile and the dominant predator throughout its range. [3] [4] The great white shark (bottom) is one of the top marine predators; however, the orca (top) is known to prey upon them. Thus, great ...
Large-scale migration of tropical savanna herbivores, such as wildebeest (Connochaetes taurinus) and zebra (Equus quagga), are continuing to decline through habitat alteration and hunting. [1] They now only occur to any significant degree in East Africa and the central Zambezian region.
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses.
Viverra capensis was the scientific name used by Johann Christian Daniel von Schreber in 1777 who described a honey badger skin from the Cape of Good Hope. [2] Mellivorae was proposed as name for the genus by Gottlieb Conrad Christian Storr in 1780, [3] while Mellivorina was proposed as a tribe name by John Edward Gray in 1865. [4]
The savannah hypothesis (or savanna hypothesis) is a hypothesis that human bipedalism evolved as a direct result of human ancestors' transition from an arboreal lifestyle to one on the savannas. According to the hypothesis, hominins left the woodlands that had previously been their natural habitat millions of years ago and adapted to their new ...
Mesopredators vary across different ecosystems. Sometimes, the same species is a mesopredator in one ecosystem and an apex predator in another ecosystem, depending on the composition of that ecosystem. [3] When new species are introduced into an ecosystem, the role of the mesopredator often changes; this can also happen if species are removed. [4]
Joseph Connell published his hypothesis in 1970 in Dynamics of Populations. [2] Unlike Janzen, Connell proposed experiments that focused on the key prediction that exclusion of host-specific predators would cause a decrease in diversity as tree species with greater establishment or competitive ability formed low-diversity seedling and sapling communities where dominance was concentrated in a ...