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Inhomogeneity detection in phytoplankton time series using multivariate analyses

100%

Muniz O., Rodriguez J. G., Revilla M., Laza-Martinez A., Seoane S., Franco J.

Oceanologia

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2020

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tom 62

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nr 3

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To calculation of inhomogeneous grain mixture flow in a cylindrical sieve of vibrocentrifugal

86%

Olshanskiy V., Burlaka V., Slipchenko M., Malec O.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2017

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tom 19

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nr 2

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The inhomogeneity of vertical distributions of suspended matter in the sea - consequences for remote sensing

72%

Bradtke K., Krezel A.

Oceanologia

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1994

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tom 36

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nr 1

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Carbon isotope distribution along pine needles [Pinus nigra Arnold]

58%

Barszczowska L., Jedrysek M. O.

Acta Societatis Botanicorum Poloniae

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2005

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tom 74

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nr 2

In this paper we show spatial carbon isotope variations in black pine (Pinus nigra Arnold) needles, collected in spring 2001 and autumn 2003, from trees at the coast of south-western Croatia island (Žirje) and southern Spain (Benalmadena near Malaga), respectively. Needles were segmented perpendicularly to the longer axis (base, middle and top) and each segment was analysed separately. d13C values in needles from Croatia varied between -26.65‰ to -24.43‰ (2 months old needles) and from -28.25‰ to -25.21‰ (1 year old needles), while d13C values in needles from Spain varied from -27.58‰ to -25.27‰. The difference between d13Cb (base) and d13Ct (top) in the same needle (D13Cb-t) varied from 1.85 to 2.05‰ (in young needles from Croatia), from 0,02 to 1,80‰ (young needles from Spain), and 1.16 to 2.32‰, (in old needles from Croatia). The average D13Cb-t values were 0.78‰ and 1.73‰ in Spain and Croatia, respectively. In each needle the base of the needle was always 13C-enriched as compared to the top of the same needle. This evidences that carbon isotopes are not retranslocated after its fixation into the leaf structure (after the growth process is over). Temperature variation was most probably negligible for the discovered intraneedle carbon isotope distribution. Although, the intraneedle carbon isotope inhomogeneity can be partly the result of seasonal variation in d13C of atmospheric CO2, most probably the remarkably high D13Cb-t values, and regular pattern, are predominantly resulting from isotopic and chemical composition of primary and secondary products contained in the growin part of needle and kinetic isotope fractionation during decomposition of storage materials at the base.

Ograniczanie wyników

2 Oceanologia

1 Acta Societatis Botanicorum Poloniae

1 Motrol. Motoryzacja i Energetyka Rolnictwa

1 Barszczowska L.

1 Bradtke K.

1 Burlaka V.

1 Franco J.

1 Jedrysek M. O.

1 Krezel A.

1 Laza-Martinez A.

1 Malec O.

1 Muniz O.

1 Olshanskiy V.

1 Revilla M.

1 Rodriguez J. G.

1 Seoane S.

1 Slipchenko M.

1 2020

1 2017

1 2005

1 1994

Inhomogeneity detection in phytoplankton time series using multivariate analyses

To calculation of inhomogeneous grain mixture flow in a cylindrical sieve of vibrocentrifugal

The inhomogeneity of vertical distributions of suspended matter in the sea - consequences for remote sensing

Carbon isotope distribution along pine needles [Pinus nigra Arnold]