Several factors have reduced diversity, he argues.
Changing patterns of land use and progressive degradation have reduced diversity and resulted in a more open woodland increasingly composed of species adapted to reduced moisture.
Where they were found experimentally, differences were generally decreased abundances of populations of some species or reduced diversity of species.
Microbial ecology studies (16S rRNA clone library) revealed reduced diversity relative to reactors operated without suspended solids.
Formerly species-rich dry grassland communities have been converted into communities with greatly reduced diversity in many places.
S. tudes presented reduced diversity for both markers, which may be related to overexploitation by local fisheries.
While fewer introduced individuals may have led to reduced diversity in the parasite, admixture between different founder populations may have counteracted genetic drift and bottlenecks.
Inevitably, whenever there is a major news merger, people express concerns about "reduced diversity of voices" in a community.
Overall, it is expected that climate change will result in the extinction of many species and reduced diversity of ecosystems.
In general, these results show reduced diversity and lower effective population size in the Roma populations.
Given frequent recombination and a high rate of gene flow, the failure to detect reduced diversity among these populations as a consequence of background selection is not surprising.
