Variation in Foliage Composition and Diameter Growth of Yellow Birch with Season, Soil, and Tree Size

Hoyle, Merrill C.

doi:10.2136/sssaj1965.03615995002900040035x

Cited by 36 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1964, Hoyle 1965) but were within the expected range for eucalypts. Only seven of the seventeen species had more than l.OOJo nitrogen and only three of these had more than 1.20Jo, these being E. viminalis, E. jraxinoides and E. e/ata.…”

Section: Resultssupporting

confidence: 54%

Soil nutrient-vegetation relationships in the Eden area, N.S.W.:III. Foliage nutrient relationships with particular reference toEucalyptussubgenera

Lambert

Turner

1983

Australian Forestry

View full text Add to dashboard Cite

Foliar nutrient concentrations were determined for the dominant tree species occurring on plots established during a previously reported soil survey in the Eden area. Generally, within-species nutrient variation was low and few significant correlations were found between soil nutrient levels and foliar concentrations for individual species. However, foliar nutrient concentrations differed significantly between species and when the data for all species were pooled, significant relationships were found between foliar phosphorus, nitrogen, calcium, potassium and sulphur levels and soil chemical properties. The species with the higher foliage nutrient concentrations were clearly associated with the more fertile soils. Eucalypt subgenera are considered in relation to their ecology and nutrition, and distinctive relationships are concluded to exist between site nutrition and the distribution of Eucalyptus subgeneric groups.

show abstract

Section: Resultssupporting

confidence: 54%

Soil nutrient-vegetation relationships in the Eden area, N.S.W.:III. Foliage nutrient relationships with particular reference toEucalyptussubgenera

Lambert

Turner

1983

Australian Forestry

View full text Add to dashboard Cite

show abstract

“…These data are in excellent agreement with published reports, both in magnitudes and in seasonal trends. Our results for percent water and specific weight are typical of tree leaves (9,21,28). Literature reports agree that potassium concentrations (on a dry weight basis) decrease during leaf development and then become approximately constant by midseason (9,10,18,21).…”

supporting

confidence: 85%

“…Our results for percent water and specific weight are typical of tree leaves (9,21,28). Literature reports agree that potassium concentrations (on a dry weight basis) decrease during leaf development and then become approximately constant by midseason (9,10,18,21). Some studies find substantially more K in shade leaves than in sun leaves (3, 7), while others find only slightly more K in shade leaves (5,6).…”

supporting

confidence: 82%

More Manganese Accumulates in Maple Sun Leaves than in Shade Leaves

McCain¹,

Markley²

1989

Plant Physiol.

View full text Add to dashboard Cite

Nuclear magnetic resonance and neutron activation analysis were used to measure manganese concentrations in leaves of Acer platanoides. Mn was found to accumulate in both the vacuoles and the chloroplasts, with more Mn (per unit area) in sun leaves than in shade leaves. No Mn was lost at senescence. Different seasonal patterns of Mn accumulation were found in sun and shade leaves. The quantity of chloroplast reserve Mn (bound to the outer surface of thylakoid membranes) increased rapidly in sun leaves from bud-break through midsummer, and then remained approximately constant through senescence. In shade leaves, however, the quantity of reserve Mn increased slowly, and at approximately a constant rate throughout the growing season.All green leaves contain manganese; however, Mn concentrations are extremely variable, depending on species, soil, and many other factors (1,4,27,29). For example, Mn accumulates preferentially in leaves exposed to higher temperatures or higher light intensities (8,24,26), and sun leaves contain more Mn per unit area than shade leaves (7). A number of studies have shown that Mn content increases with time (4,6,18,27), but none has compared the patterns of Mn accumulation in sun leaves and shade leaves. Such a study could help to identify the function of the excess Mn.Our objective in this study was to compare patterns of Mn accumulation in sun and shade leaves from development through senescence. Three complementary analytical techniques were used. Neutron activation analysis provided a direct measurement of the total Mn content of a leaf. 'H NMR spectroscopy enabled us to study changing Mn concentrations in the chloroplasts, and nuclear spin relaxation times were used to estimate Mn concentrations in the vacuoles.Neutron activation is a sensitive and accurate method for Mn analysis. When samples are exposed to thermal neutrons from an operating nuclear reactor, certain isotopes (e.g. "Mn) become radioactive and can be identified by their y-ray spectrum. The intensity of each y-ray peak is proportional to the quantity of the isotope that produces it. No sample preparation is required. Another advantage of the method is that several elements can be measured simultaneously using the same equipment. Although Mn was our primary interest, we chose also to measure Na and K so that our data could be compared with other published studies. More is known about Na and K accumulation than about Mn.NMR spectra provide information about the chemical and magnetic environment of atomic nuclei. For example, the 'H NMR spectrum of pure water shows only a single, narrow peak; the single peak indicates that all 'H nuclei in the sample are exposed to the same average magnetic field strength.The leaves of some plant species exhibit multiple NMR peaks even though the signals arise almost entirely from water (17). This is because internal structures in the leaves distort the applied magnetic field, causing the peak from chloroplast water to be displaced from that of water in other leaf compartments (16...

show abstract

“…Tamm (1951) and Hoyle (1965Hoyle ( , 1969 reported two general patterns of seasonal variation in leaves of two species of Betula, while Woodwell (1974) detected similar patterns of seasonal variation in leaves of two species of Quercus.…”

Section: Discussionmentioning

confidence: 95%

Seasonal growth and foliar nutrients of Larix laricina in three wetland ecosystems

Tilton¹

1977

Can. J. Bot.

View full text Add to dashboard Cite

TILTON, D . L. 1977. Seasonal growth and foliar nutrients of Lrrrix Irrricit~rr in three wetland ecosystems. Can. J. Bot. 55: 1291-1298. Levels of N, P, Ca, Mg, K , Al, Fe. Zn, Mn. and B were determined in foliage from tamarack (Lnrix laricinrr (DuRoi) K. Koch) in a bog, conifer swamp, and fen from budbreak to leaf abscission. Elongation of needles and lateral shoots a s well a s dry and ash weight of needles were determined. Expansion of needles and shoots ceased at similar dates for all sites, but trees in the fen had significantly longer needles and lateral shoots.On August 13, foliar concentrations of N, Ca, and Mg were higher in the fen than in the conifer swamp or bog, while concentrations of AI, Fe, Zn, Mn, and B were higher in the bog than the other two sites. Phosphorus concentrations in foliage were similar on this date in the fen and conifer swamp but were lower in the bog site. Despite significant between-site variation for certain foliar elements, two patterns of seasonal variation in nutrient concentrations were discerned. Significant between-site differences in the amounts and rates of needle and shoot elongation, foliar nutrient concentrations at a single sampling time, and p a t t e~n s of certain foliar elements were associated with variations in nutrient status and moisture-aeration conditions of the study sites.

show abstract

Variation in Foliage Composition and Diameter Growth of Yellow Birch with Season, Soil, and Tree Size

Cited by 36 publications

References 0 publications

Soil nutrient-vegetation relationships in the Eden area, N.S.W.:III. Foliage nutrient relationships with particular reference toEucalyptussubgenera

Soil nutrient-vegetation relationships in the Eden area, N.S.W.:III. Foliage nutrient relationships with particular reference toEucalyptussubgenera

More Manganese Accumulates in Maple Sun Leaves than in Shade Leaves

Seasonal growth and foliar nutrients of Larix laricina in three wetland ecosystems

Contact Info

Product

Resources

About