Little data exists on growth rates and associated sizes of trees growing in wetlands at low elevations in the Puget Sound Basin of Washington State. Typically, tree size and inferred wetland age are based on growth rates known for the same and similar species in upland habitats. Preliminary data on height, diameter at breast height (DBH), age, associated plant community, degree of soil saturation, and soil type associated with the rooting zone of each tree have been collected for nine tree species typical of Puget Lowland wetlands. The species include the following: _Alnus rubra_, _Betula papyrifera_, _Fraxinus latifolia_, _Picea sitchensis_, _Populus balsamifera_ ssp. _trichocarpa_, _Rhamnus purshiana_, _Salix lucida_ var. _lasiandra_, _Thuja plicata_, and _Tsuga heterophylla_.Characters of growth rate, size, and height by age vary by species, but differences between members of the same species often correlate with degree of soil saturation and/or soil type. Tables indicating averages for DBH and height by age for each species are now available from this data. These tables can be used to extrapolate the age of individuals of a particular species if the DBH and approximate height are measured.
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PNW 98 Session - Full Abstracts