Airborne pollen and spore registrations at Ny-Ålesund, Svalbard, summer 1986

Recent Environmental Change and Atmospheric Contamination on Svalbard as Recorded in Lake Sediments – Modern Limnology, Vegetation, and Pollen Deposition

“…Carex rupestris, C. nardina, Poa arctica, Trisetum spicatum) and are not expected to produce or disperse much pollen. Interestingly, pollen catches in a Burkard trap during 1986 at Ny-Ålesund (Johansen and Hafsten 1988) closely resemble the modern pollen assemblages in Groups 1 and 2, with much local and regional Salix, Oxyria digyna, and Saxifraga pollen and about 10% extra-regional pollen of Betula, Pinus, Alnus, and Juniperus.…”

“…Of the 49 identified microfossil taxa, only twelve are from plant taxa that do not grow on Svalbard today (Alnus, Betula, Corylus, Pinus, Quercus, Lotus-type, Thalictrum, Umbelliferae, Urtica-type, Lycopodium (reticulate), Artemisia, Chenopodiaceae). These are almost certainly far-distance transported from areas further south, probably Fennoscandia (Johansen and Hafsten 1988), and represent the extra-regional component (sensu Janssen 1984) of pollen deposition on Svalbard. This extra-regional component ranges from 2% to 25% of the total pollen assemblage.…”

Atmospheric transportation of marihuana pollen from North Africa to the Southwest of Europe

“…The importance of identifying the origin lies not only in attempts to control the illegal movement of drugs but also in the possibility of the pollen producing allergenic reactions in some sensitive individuals, as has happened in the northcentral regions of North America where Cannabis was widely grown (Maloney and Brodkey, 1940;MacQuiddy, 1955). Many papers on medium or long-range transport of other pollen grains have been published (Tampieri, 1977;Mandrioli et al, 1980Mandrioli et al, , 1982Mandrioli et al, , 1984Johansen and Hafsten, 1988;Peeters and Zoller, 1988;Hjelmroos, 1991;Franzen et al, 1994;Rantio-Lehtim~iki, 1994), but this is the first on marihuana pollen.…”

Exotic sporomorpha as indicators of potential immigrant colonists in Antarctica

“…However, since many of these propagules probably reach considerable altitudes (up to at least 10 km) they must be adequately adapted to tolerate high levels of ultraviolet radiation, and extreme desiccation and low temperature if they are to retain their viability and be regarded as potential colonists (e.g., van Zanten 1983). Comparable studies using long-distance pollen trajectories as air mass tracer have been made in the high Arctic (e.g., Bourgeois et al 1985, Johansen & Hafsten 1988.…”