arthropod ) movements butterflies commonly used road verges, roads Dorset and butterflies and ) were not a genetic barrier, mortalities low Hampshire, UK burnet population compared with natural factors dust deposition 25 environmental variables dust deposition 100 vegetation composition plant community Effects long-term, graminoids increase and ) tundra, Alaska 100 - sphagnum lichens and sphagnum decrease modelled vegetation effects along the Dalton dust deposition 600 highway forest/grassland, ) 100 OHV dust, visually inspected plants for dust Kentucky dust deposition 200 magnesium and calcium carbonate Mines, San Habitat impacts 400 magnesium and calcium carbonate Bernadino, ) Eriogonum California rare 600 magnesium and calcium carbonate microthecum plant impacts ) dust deposition 100 less pollen deposited near road than away from ) pollen deposition road New Concentrations of Al, Cr, Fe, La, Ni, Sc, Sm, ) Brunswick, mosses 200 and V highest near roads. Canada ) Mojave, CA shrubs effects from dust on shrubs but no distance ) Review effects of roads and traffic New South Three tree Grading favored plants with strong resprouting Acacia ) Wales, Australia species ability more weeds along roads if within 250 m of ) New Zealand houses elderberry weakly affected, trails and low use Sacramento, elderberry ) roads, near 2-10 m, far 12-40 m California beetle beetle not affected, trails and low use roads road effects on terrestrial and aquatic ) Review communities looked at both road and trail corridors, exotics Glacier, weeds in ) 100 found in backcounty in proximity to trails up to Montana grasslands 100m away ) Greece Quercus coccifera 300 limestone dust Vernath et al. 2003 dust deposition 100 Sphagnum 20 completely gone at one site dust deposition 30 93% of dust deposited ) tundra, Alaska dust deposition 125 97% of dust deposited Density of traffic affected. At 1000 meters dust dust deposition 1000 was still twice other sites at Deadhorse plant community 15 forest edge effects to vegetation Wisconsin ) forest weeds 15 forest edge effects to vegetation Astragalus looked at dust effects on vegetation, no distance ) California jaegerianus measurement moss mosses 250 for most elements ) communities, MO, Cr, CU, only on most frequented roads, elements 1000 Austria some logarithmic, some linear
) arthropod movements ) Dorset and Hampshire, UK butterflies and burnet population butterflies commonly used road verges, roads were not a genetic barrier, mortalities low compared with natural factors ) tundra, Alaska dust deposition 25 environmental variables dust deposition 100 vegetation composition plant community - sphagnum 100 Effects long-term, graminoids increase and lichens and sphagnum decrease dust deposition 600 modelled vegetation effects along the Dalton highway ) forest/grassland, Kentucky 100 OHV dust, visually inspected plants for dust ) Mines, San Bernadino, California dust deposition 200 magnesium and calcium carbonate Habitat impacts 400 magnesium and calcium carbonate Eriogonum microthecum rare plant impacts 600 magnesium and calcium carbonate ) dust deposition 100 ) pollen deposition less pollen deposited near road than away from road ) New Brunswick, Canada mosses 200 Concentrations of Al, Cr, Fe, La, Ni, Sc, Sm, and V highest near roads. ) Mojave, CA shrubs effects from dust on shrubs but no distance ) Review effects of roads and traffic ) New South Wales, Australia Three Acacia tree species Grading favored plants with strong resprouting ability ) New Zealand more weeds along roads if within 250 m of houses ) Sacramento, California elderberry elderberry weakly affected, trails and low use roads, near 2-10 m, far 12-40 m beetle beetle not affected, trails and low use roads ) Review road effects on terrestrial and aquatic communities ) Glacier, Montana weeds in grasslands 100 looked at both road and trail corridors, exotics found in backcounty in proximity to trails up to 100m away ) Greece Quercus coccifera 300 limestone dust Vernath et al. 2003 dust deposition 100 ) tundra, Alaska Sphagnum 20 completely gone at one site dust deposition 30 93% of dust deposited dust deposition 125 97% of dust deposited dust deposition 1000 Density of traffic affected. At 1000 meters dust was still twice other sites at Deadhorse ) Wisconsin forest plant community 15 forest edge effects to vegetation weeds 15 forest edge effects to vegetation ) California Astragalus jaegerianus looked at dust effects on vegetation, no distance measurement ) moss communities, Austria mosses 250 for most elements elements 1000 MO, Cr, CU, only on most frequented roads, some logarithmic, some linear
Plant_Guidance_030613.docx