The routes and kinetics of trichloroacetic acid uptake and elimination in Sitka spruce (Picea sitchensis) saplings via atmospheric deposition pathways
نویسندگان
چکیده
منابع مشابه
Trichloroacetic acid cycling in Sitka spruce saplings and effects on sapling health following long term exposure.
Trichloroacetic acid (TCA, CCl(3)COOH) has been associated with forest damage but the source of TCA to trees is poorly characterised. To investigate the routes and effects of TCA uptake in conifers, 120 Sitka spruce (Picea sitchensis (Bong.) Carr) saplings were exposed to control, 10 or 100 microg l(-1) solutions of TCA applied twice weekly to foliage only or soil only over two consecutive 5-mo...
متن کاملLong-term exposure of Sitka spruce seedlings to trichloroacetic acid.
Trichloroacetic acid (TCA) has been implicated as an airborne pollutant responsible for adverse effects on forest health. There is considerable debate as to whether TCA observed in trees and forest soils is derived from atmospheric deposition or from in situ production. This experiment reports the results from treating 4-year-old Sitka spruce (Picea sitchensis (Bong.) Carr) plants in a greenhou...
متن کاملSpread of the Introduced Sitka Spruce (Picea sitchensis) in Coastal Norway
Positive and negative effects on ecosystem services from plantation forestry in Europe have led to conflicts regarding non-native tree species. Sitka spruce (Picea sitchensis (Bong.) Carr.) is the most common plantation species in northwest Europe, covering 1.3 Mha. In costal Norway, Sitka spruce was intentionally introduced and is currently occupying about 50,000 ha. Sitka spruce was blacklist...
متن کاملBehavioral and Reproductive Response of White Pine Weevil (Pissodes strobi) to Resistant and Susceptible Sitka Spruce
White pine weevil (Pissodes strobi, Peck.) is a native forest insect pest in the Pacific Northwest of North America that attacks species of spruce (Picea spp.) and pine (Pinus spp.). Young Sitka spruce [Picea sitchensis (Bong.) Carr.] trees are particularly susceptible to weevil attack. Pockets of naturally occurring Sitka spruce resistance have been identified in high weevil hazard areas in co...
متن کاملConstitutive defenses and damage in Sitka spruce progeny obtained from crosses between white pine weevil resistant and susceptible parents
The white pine weevil, Pissodes strobi Peck (Coleoptera: Curculionidae), is a serious forest pest in young pine and spruce plantations in much of Canada and the northern US (Mitchell et al., 1990; Alfaro et al., 1995). Adults emerge in early spring to begin feeding and egg laying in the secondary phloem of the1-year-old terminal leader of young trees (Silver, 1968). Upon hatching, larvae mine d...
متن کامل