76 research outputs found
Soil-to-plant transfer of uranium and its distribution between plant parts in four boreal forest species
Radial ring width and wood structure in the ozone-exposed Norway spruce seedlings grown under different nitrogen regimes
Open-top chamber fumigation system for exposure of field grown Pinus sylvestris to elevated carbon dioxide and ozone concentration
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Unravelling the functions of biogenic volatiles in boreal and temperate forest ecosystems
Living trees are the main source of biogenic volatile organic compounds (BVOCs) in forest ecosystems, but substantial emissions originate from leaf and wood litter, the rhizosphere and from microorganisms. This review focuses on temperate and boreal forest ecosystems and the roles of BVOCs in ecosystem function, from the leaf to the forest canopy and from the forest soil to the atmosphere level. Moreover, emphasis is given to the question of how BVOCs will help forests adapt to environmental stress, particularly biotic stress related to climate change. Trees use their vascular system and emissions of BVOCs in internal communication, but emitted BVOCs have extended the communication to tree population and whole community levels and beyond. Future forestry practices should consider the importance of BVOCs in attraction and repulsion of attacking bark beetles, but also take an advantage of herbivore-induced BVOCs to improve the efficiency of natural enemies of herbivores. BVOCs are extensively involved in ecosystem services provided by forests including the positive effects on human health. BVOCs have a key role in ozone formation but also in ozone quenching. Oxidation products form secondary organic aerosols that disperse sunlight deeper into the forest canopy, and affect cloud formation and ultimately the climate. We also discuss the technical side of reliable BVOC sampling of forest trees for future interdisciplinary studies that should bridge the gaps between the forest sciences, health sciences, chemical ecology, conservation biology, tree physiology and atmospheric science
Effects of elevated UV-B radiation on UV-absorbing pigments and leaf anatomy of a sedge, Eriophorum russeolum
Technical Report. Open-top chamber fumigation of cloned silver birch (Betula pendula Roth) trees to elevated CO2 and ozone: Description of the fumigation system and the experimental site.
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