Nutrient status of bracken (Pteridium aquilinum) following whole-tree harvesting in Upper Michigan

Influence of herbaceous and woody vegetation control on seedling microclimate, leaf gas exchange, water status, and nutrient relations of Pinus strobus L. seedlings planted in a shelterwood

“…These results are consistent with those of our companion study established in a nearby pine plantation (Parker et al, 2010), and likely associated with the relatively high nutrient accumulation by bracken fern and herbaceous species common to recently disturbed northern forest sites (Lederle and Mroz, 1991;Gilliam, 2007). Woody vegetation control did not affect foliar nutrient status of underplanted pine in our study, but improved Ca (Parker et al, 2010) and N, Ca, and Mg (Périé and Munson, 2000) have been reported for white pine plantations where aspen-dominated woody vegetation was suppressed.…”

Influence of woody and herbaceous vegetation control on leaf gas exchange, water status, and nutrient relations of eastern white pine (Pinus strobus L.) seedlings planted in a central Ontario clearcut

“…Bracken fern, and early successional herbaceous and low shrub forest species in general, have higher N, P, and K tissue concentrations compared to northern temperate and boreal forest tree species (MacLean and Wein, 1977;Ohmann and Grigal, 1979;Lederle and Mroz, 1991;Muller, 2003). Growth inhibition of boreal conifer regeneration by Kalmia spp.…”

Canopy cover effects on nitrogen and phosphorus status in understory vegetation in oak and pine stands

“…Lederle and Mroz (1991) also found greater P concentrations in bracken fern fronds following clearcutting in a northern hardwood forest in Upper Michigan, USA compared with an adjacent uncut forest. This increase may be attributed to increased P mineralization with altered environmental factors after canopy removal (Lane 1975), and increased ATP synthetase production with increased photosynthetic efficiency (Reich and Schoettle 1988).…”

“…2). These higher N concentrations in bracken fern fronds may be attributed to nutrient retranslocation to important nutrient storage organs such as the rhizome during senescence (Crow et al 1991;Lederle and Mroz 1991) compared with the foliage of other plants. Kim et al (1996) reported that available N measured with the in situ buried bag technique was significantly higher in the northern red oak stands than in the red pine stands.…”

“…Many studies have emphasized the role of growing vegetation following canopy removal as an effective sink for nutrients released by disturbance in forest stands (Marks and Bormann 1972;Ohmann and Grigal 1979;Crow et al 1991). For example, the bracken fern [Pteridium aquilinum (L) Kuhn] was a major sink of available nutrients after whole tree harvest in northern hardwood forests in upper Michigan, USA (Crow et al 1991;Lederle and Mroz 1991). Early successional species such as raspberry (Rubus spp.)…”