Abstract
Abstract Pollen monitoring was conducted in 1988 and 1989 in an open field in Ste. Anne de Madawaska (N.B., Canada) proposed for the establishment of an eastern larch clonal seed orchard. Eastern larch is a common species in the area, and a stand is located adjacent to the study site. The objective of the study was to evaluate the level of pollen originating from the adjacent stand and from more distant stands. Pollen traps were established along a transect downwind to the stand and monitored daily. Pollen catch in 1989 was 2.7 times less than in 1988. Pollen catch downwind from the stand was described according to three phases. Early in the study, pollen catch originated only from the stands; then, increased numbers of pollen originated from other sources; finally, pollen catch was only from other sources. Pollen from the stand represented about 5-10% of larch pollen catch in both 1988 and 1989, and the remaining originated from more distant sources. Removal of the stand would have had little impact on total pollen influx on to the proposed orchard site. North. J. Appl. For. 11(4):124-130.
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