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The impact of defoliation on the foliar chemistry of southern rata (Metrosideros umbellata)


, : The impact of defoliation on the foliar chemistry of southern rata (Metrosideros umbellata). New Zealand Journal of Ecology 30(2): 237-249

Brushtail possums (Trichosurus vulpecula) tend to eat young canopy foliage in southern rata (Metrosideros umbellata), and browsing tends to be concentrated on only a few trees. Samples collected as part of an artificial defoliation experiment were analysed for NPK (nitrogen, phosphorus, and potassium), carbohydrate, and polyphenolic concentrations to determine whether changes in foliar chemistry associated with defoliation provide an explanation for these patterns of browsing.

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Other references

Magnus, P.; Haldorsen, T.; Bakketeig, L.S., 1988: Perinatal mortality for single births and twins in 1967-1984. Tidsskrift for den Norske Laegeforening 108(25): 2006-2008

Johnson E.A.; Fryer G.I., 1989: Population dynamics in lodgepole pine engelmann spruce forests. Pinus contorta var. latifolia and Picea engelmannii recruitment and mortality were reconstructed in 13 lower subalpine stands from age-height curves of live trees, saplings, and seedlings, and from cross-dated dead standing, fallen, and buried ste...

Marks, I., 1983: Are there anticompulsive or antiphobic drugs? Review of the evidence. Review of 19 uncontrolled studies of antidepressants in phobic and in obsessive-compulsive disorders suggests that such drugs do not act reliably in the absence of symptoms of anxiety-depression (dysphoria). In dysphoric patients the drugs have a...

Araujo Neto, J.S.; MartinsA.J.Jr.; Sant'anna, G.L.Jr, 1994: Use of rat brain Na+,K+-ATPase assay to determine effectiveness of biological treatment to reduce toxicity of paper mill effluents. This work evaluates the toxicity of kraft mill wastewaters and the extent of detoxification attained after biological treatment of these effluents with the fungus Phanerochaete chrysosporium. The degree of inhibition of the enzyme Na+, K+-ATPase w...

Doutre, M.P.; Toure, B., 1977: Serology of pleuropneumonia. Use of a Kolmer microtiter complement fixation test. Use of a Kolmer microtitre CF test for the serology of bovine pleuropneumonia is described. The reaction may be performed using either one serum dilution (1:10) or a number of dilutions. Advantages include economy, speed, and less risks of error o...

Takeuchi, H.; Fervaha, G.; Remington, G., 2016: Reliability of a patient-reported outcome measure in schizophrenia: Results from back-to-back self-ratings. This study aimed to assess patient's capacity to perform a patient-reported outcome (PRO) measure (i.e., a self-rating scale) and examine its relationship with clinical characteristics including cognition. Fifty patients with schizophrenia we...

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Majumdar, S.; Sloan, K.B., 2007: Topical delivery of N-alkyl-N-alkyloxycarbonylaminomethy (NANAOCAM) prodrugs of theophylline (ThH). N7-(N-Alkyl-N-alkyloxycarbonyl) aminomethyl (NANAOCAM) prodrugs of theophylline (ThH) have been synthesized and characterized by their solubilities in isopropyl myristate (S-IPM), solubilities in water (S-AQ), partition coefficients between IPM a...

Zita, A.; Hermansson, M., 1997: Effects of bacterial cell surface structures and hydrophobicity on attachment of activated sludge flocs. We have shown that increased cell surface hydrophobicities of both well-characterized Escherichia coli strains and isolates from wastewater correlate well with increased adhesion to sludge flocs (Spearman rank correlation coefficient, 0.773; P lt...