In low-input, low-productivity grazing systems in Australia, the modification of natural woodlands through overstorey tree and woody regrowth removal are vegetation management options used by landholders to increase native grass production for livestock grazing; however, there is little empirical evidence to indicate at what tree densities biodiversity attributes are compromised.
Total densities, dominant species densities, and biodiversity indexes of macrozoobenthos and cladocerans as well as copepods did not differ (P > 0.05) among each other in all three areas.
Apart from the serious and widespread problems of water pollution – both on the surface and below the ground – erosion and degradation of soil, and loss of forest density and biodiversity, the problem of air pollution in several parts of the country is alarming.
The pesticide immediately reduced zooplankton density and biodiversity not only directly, by killing copepods, but also indirectly, by increasing the numbers of rotifers.
Lastly, we found that urban planning in terms of built-up density affects biodiversity distribution and that private gardens can provide landscape connectivity within urban areas.
Discussions in focus groups and subsequent expert interviews both stressed that the effect of overgrazing between the ranches' protection fence and Lake Ngami has significantly reduced both the grass cover density and biodiversity of the area.
Tree contribution to carbon storage (C) was defined using species wood density and biodiversity conservation value (BD) using food and habitat provision for wildlife and species existence (non-use) value (EX).
The Amazon Biome spans seven million square kilometers and nine nations - a vast expanse whose dimensions are multiplied by an unimaginable density of biodiversity.
Our results suggest that medium tree densities may provide biodiversity benefits concordant with more natural areas, yet not adversely impact on pasture production.
HLC were more efficient than PSC in reflecting the biodiversity and density of the anopheline fauna in all study sites, although the latter was carried out in twice as much houses.
