2004
DOI: 10.1590/s0103-90162004000400018
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Abstract: ABSTRACT:In comparison to deciduous species, evergreen plants have lower leaf nutrient contents and higher leaf life span, important mechanisms for nutrient economy, allowing the colonization of low fertility soils. Strategies to conserve nitrogen in two semideciduous tropical forest tree species, with different leaf life spans were analyzed. The hypothesis was the fact that the two species would present different nitrogen conservation mechanisms in relation to chemical (total nitrogen, protein, chlorophyll, a… Show more

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Cited by 9 publications
(6 citation statements)
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“…5). Similar data were obtained by Haddad et al (2004) when comparing H. courbaril with another deciduous species, Croton priscus, form the Santa Genebra Reserve.…”
Section: Resultssupporting
confidence: 79%
“…5). Similar data were obtained by Haddad et al (2004) when comparing H. courbaril with another deciduous species, Croton priscus, form the Santa Genebra Reserve.…”
Section: Resultssupporting
confidence: 79%
“…However, statistically significant differences (p < 0.01) were found regarding NRE between the studied sympatric species. Significant negative correlations (p < 0.01) between NRE and NRP and PRE and PRP, respectively were found in both species, indicating that resorption efficiency was controlled by nutrient concentration in senescent leaves (NRP and PRP), and was distinct from leaf longevity, which leads to resource conservation (Haddad et al, 2004).…”
Section: Discussionmentioning
confidence: 95%
“…Other examples of mechanisms that evergreen species can employ to conserve nutrients are tissues with long lifespans and/or low tissue nutrient concentrations (Aerts 1995; Feller et al . 1999; Carrera, Sain & Bertiller 2000; Haddad, Lemos & Mazzafera 2004; Denton et al . 2007).…”
Section: Introductionmentioning
confidence: 99%
“…Nutrient resorption is vital for plant survival in nutrient-poor environments. Other examples of mechanisms that evergreen species can employ to conserve nutrients are tissues with long lifespans and/or low tissue nutrient concentrations (Aerts 1995;Feller et al 1999;Carrera, Sain & Bertiller 2000;Haddad, Lemos & Mazzafera 2004;Denton et al 2007). Nutrient resorption is an active physiological process in which plants conserve nutrients by withdrawing them from senescing tissues and sequestering them for future use.…”
Section: Introductionmentioning
confidence: 99%