A tension zone is a transitional zone between two distinctive zones, the zones may be influenced by

climatic Climate is the long-term weather pattern in a region, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteorolog ...

factors, and

geological Geology (). is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth s ...

variation. creating a

floristic {{Short pages monitor ''Did you mean: "Floristics Floristics is the study of plants of geographical regions. It is a branch of phytogeography, which technically makes it a branch of botany, geography, and a subbranch of biogeography. Harvard Un ...

tension zone. A marine tension zone may be affected by variables such as depth, climate or salinity. In a tension zone there is the increased probability of hybridization between species of the separate zones and thus the tension zone may also be a

hybrid zone A hybrid zone exists where the ranges of two interbreeding species or diverged intraspecific lineages meet and cross-fertilize. Hybrid zones can form ''in situ'' due to the evolution of a new lineage but generally they result from secondary cont ...

. Historically tension zones were entirely natural in origin, however human activity has altered the tension zones in a variety of areas all over the world.Global Desertification Tension Zones
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References

Population genetics Speciation {{biology-stub