1992
DOI: 10.1111/j.1469-8137.1992.tb00089.x
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Seedlings of black birch (Betula lentaL.) as foragers for nitrogen

Abstract: Soil nitrogen environments are bigbly beterogeneous, containing microsites tbat differ in relative and absolute ammonium and nitrate contents. We investigated wbetber black bircb {Betula lenta h.) seedlings can maximize growth by foraging preferentially for a particular form of nitrogen, and wbetber supply rate of N and ammonium: nitrate in a patcb affects preferences. Seedlings were transplanted into 5 1 split pots witb roots partitioned evenly, and assigned to 1 of 4 nitrogen form treatments: nitrate (NO3") … Show more

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Cited by 10 publications
(3 citation statements)
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“…Jungk & Barber, 1974), or the root system had access to different forms of the same nutrient [e.g. NH/ and NOg": Barta (1976); Gojon et al (1986); Cooper & Clarkson (1989); Crabtree & Bazzaz (1992); Schortmeyer, Feil & Stamp (1993);Chaillou et al, (1994)]. In neither type of experiment did parts of root systems suffer any deprivation of nutrients.…”
Section: The Scope Of This Reviewmentioning
confidence: 99%
“…Jungk & Barber, 1974), or the root system had access to different forms of the same nutrient [e.g. NH/ and NOg": Barta (1976); Gojon et al (1986); Cooper & Clarkson (1989); Crabtree & Bazzaz (1992); Schortmeyer, Feil & Stamp (1993);Chaillou et al, (1994)]. In neither type of experiment did parts of root systems suffer any deprivation of nutrients.…”
Section: The Scope Of This Reviewmentioning
confidence: 99%
“…The relatively high values of foliar C:N in black birch grown in clean fill and greenhouse mix reflect the lack of nitrogen availability in those soils. Black birch seedlings grow larger when nitrate is more readily available (Crabtree & Bazzaz 1992), and previous work has found a substantial black birch growth response following forest disturbances associated with an increase in nitrogen cycling (Jenkins et al 1999; Falxa‐Raymond et al 2012). This species may be well‐suited to take advantage of the increased nitrogen availability in urban forest soils.…”
Section: Discussionmentioning
confidence: 99%
“…The carbon economy of roots can significantly affect root biomass in relation to the cost of foraging for nutrients. Root biomass is reduced when nutrients occur in patches, rather than being homogeneously distributed (Crabtree and Bazzaz, 1992). Numerous studies demonstrate that as little as 15% of the root system can supply the entire plant's N needs (Burns, 1980;Robinson et al, 1991).…”
mentioning
confidence: 99%