The intermittent presence of additional invasive species such as Quercus and Juniperus raises the likelihood of periods of more arid (colder) climate (scenario 1) or secondary growth following forest clearance (scenario 2).
We assess Mediterranean habitat loss and conversion into arid habitat under scenarios of climate change and evaluate protected areas, including Natura 2000 sites, which will be affected by these changes.
This paper offers an analysis of hydrological resilience of a water-limited arid ecosystem under future extraction scenarios and changing climate conditions.
The torrential regime is the current hydrologic and climatic scenario in the streams of semi-arid southeastern Spain.
The IPCC determined that the mediterranean biome as a whole is threatened by desertification from expansion of semi-arid and arid system under relatively minor warming and drying scenarios, and projects significant regional vegetation and species range shifts [28].
In this scenario, speciation probably followed a colonization event across the arid plain, possibly during a temporary phase of less arid conditions.
Regions of most similar habitat north of the contour lines are found in the northwest and north-central parts of the arid zone, and for the 33 % and 50 rainfall reduction scenarios they are separated by an area of somewhat less similar habitat.
Therefore, an ANCOVA of persistence comprising all sites as for the constant seed bank scenario was not meaningful and I analyzed the arid region only.
A Tanzanian isolation scenario suggests that subcaeruleum and boehmi may have diverged across different arid zone habitats; a similar explanation is necessary to explain their divergence from layardi, whose distribution extensively overlaps that of subcaeruleum [ 64].
Future climate scenarios indicate that extended droughts may become more common in some arid regions.
