Spatial heterogeneity of the planktonic fields in the upper mixed layer of the open ocean

S. A. Piontkovski, R. Williams, W. T. Peterson, O. A. Yunev, N. I. Minkina, V. L. Vladimirov, A. Blinkov

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Field surveys were conducted in the open ocean regions of the Indian and Atlantic Oceans and the Mediterranean (Adriatic) Sea. Continuous records were taken along transects of several hundreds of km over the area. Zooplankton and chlorophyll a (chl a) samples were collected from the surface layer using a high capacity pump while the ship was underway. The quantitative trends of occurrence of zooplankton biomass of different patch sizes over the studied areas were quite similar. From the averaged trend and non-linear regression analysis, it was demonstrated that on a scale of tens to hundreds of km the number of patches exponentially diminishes with patch size. The power spectra of temperature, chl a and zooplankton biomass in the surface layer were similar. They monotonically decrease with the decrease of the spatial wavelength of oscillations of the above parameters. The typical slope of the spectra of temperature, phytoplankton and zooplankton fields are within the range of -3 to -2 in a band of wavelengths from 200 to 10 km. In the western subtropical Atlantic where the internal waves are well developed in the seasonal thermocline layer, the variability of zooplankton biomass was characterised by a power spectra having several local peaks of spatial spectral density on a background of a declining curve. Nevertheless, the average spectra slope exhibits the same trend, that is, it diminishes with the slope of the curve within the range -3 to -2. Temperature and zooplankton biomass spectra exhibited coherent local peaks of spectral density at similar wavelengths.

Original languageEnglish
Pages (from-to)145-154
Number of pages10
JournalMarine Ecology Progress Series
Volume148
Issue number1-3
Publication statusPublished - Mar 20 1997

Fingerprint

open ocean
mixed layer
zooplankton
oceans
wavelengths
patch size
biomass
wavelength
surface layer
chlorophyll a
chlorophyll
temperature
ships
internal wave
Indian Ocean
thermocline
Atlantic Ocean
pumps
field survey
oscillation

Keywords

  • Atlantic Ocean
  • Spatial heterogeneity
  • Zooplankton

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

Cite this

Piontkovski, S. A., Williams, R., Peterson, W. T., Yunev, O. A., Minkina, N. I., Vladimirov, V. L., & Blinkov, A. (1997). Spatial heterogeneity of the planktonic fields in the upper mixed layer of the open ocean. Marine Ecology Progress Series, 148(1-3), 145-154.

Spatial heterogeneity of the planktonic fields in the upper mixed layer of the open ocean. / Piontkovski, S. A.; Williams, R.; Peterson, W. T.; Yunev, O. A.; Minkina, N. I.; Vladimirov, V. L.; Blinkov, A.

In: Marine Ecology Progress Series, Vol. 148, No. 1-3, 20.03.1997, p. 145-154.

Research output: Contribution to journalArticle

Piontkovski, SA, Williams, R, Peterson, WT, Yunev, OA, Minkina, NI, Vladimirov, VL & Blinkov, A 1997, 'Spatial heterogeneity of the planktonic fields in the upper mixed layer of the open ocean', Marine Ecology Progress Series, vol. 148, no. 1-3, pp. 145-154.
Piontkovski SA, Williams R, Peterson WT, Yunev OA, Minkina NI, Vladimirov VL et al. Spatial heterogeneity of the planktonic fields in the upper mixed layer of the open ocean. Marine Ecology Progress Series. 1997 Mar 20;148(1-3):145-154.
Piontkovski, S. A. ; Williams, R. ; Peterson, W. T. ; Yunev, O. A. ; Minkina, N. I. ; Vladimirov, V. L. ; Blinkov, A. / Spatial heterogeneity of the planktonic fields in the upper mixed layer of the open ocean. In: Marine Ecology Progress Series. 1997 ; Vol. 148, No. 1-3. pp. 145-154.
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