Ecological Effects of Vehicular Routes in the Mojave Desert: State-of ...

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Roads as Conduits for Exotic PlantInvasions: Colorado PlateauGelbard and Belnap (2003)– Compared plant cover along the verges and 165ft from the verges(“interior sites”) of paved roads, improved dirt roads, and 4-wheeldrive tracks– Road improvement increased cover of alien plants in roadsideverges– Road improvement also increased alien plant cover in interior sites.– In interior sites, alien species richness was more than 50% greateralong paved roads and 30% lower along 4-wheel-drive tracks
What We do Know About VehicularRoutes and the Mojave Desert• Road construction tends to decrease perennial plant cover and increasecover of non-native annual species• Increase in vigor of roadside plants• Increase in some species of foliage arthropods at the road verge• Little research documents effects of vehicular routes on reptiles,amphibians or mammals
Page 1 and 2: Ecological Effects of VehicularRout
Page 3 and 4: Types of Vehicular Routes•OHV tra
Page 5 and 6: Vehicular Routes Effect PhysicalFea
Page 7 and 8: Effects of Fencing Vehicular Routes
Page 10 and 11: Effects of Utility CorridorsLathrop
Page 14: Directions for Future Research• S

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