Dynamics of Two Picophytoplankton Groups inMediterranean Sea: Analysis of the Deep Chlorophyll Maximum by a Stochastic Advection-Reaction-Diffusion Model

Bernardo Spagnolo, Giovanni Denaro, Davide Valenti, Salem W. Zgozi, Salvatore Aronica, Gualtiero Basilone, Salvatore Mazzola, Angelo Bonanno

Risultato della ricerca: Article

28 Citazioni (Scopus)

Abstract

A stochastic advection-reaction-diffusion model with terms of multiplicative white Gaussian noise, valid for weakly mixed waters, is studied to obtain the vertical stationary spatial distributions of two groups of picophytoplankton, i.e.,picoeukaryotes and Prochlorococcus, which account about for 60% of total chlorophyll on average in Mediterranean Sea. By numerically solving the equations of the model, we analyze the one-dimensional spatio-temporal dynamics of the total picophytoplankton biomass and nutrient concentration along the water column at different depths. In particular, we integrate the equations over a time interval long enough, obtaining the steady spatial distributions for the cell concentrations of the two picophytoplankton groups. The results are converted into chlorophyll a and divinil chlorophyll a concentrations and compared with experimental data collected in two different sites of the Sicily Channel (southern Mediterranean Sea). The comparison shows that real distributions are well reproduced by theoretical profiles. Specifically,position, shape and magnitude of the theoretical deep chlorophyll maximum exhibit a good agreement with theexperimental values.
Lingua originaleEnglish
pagine (da-a)e66765(1)-e66765(14)
Numero di pagine14
RivistaDefault journal
Volume8
Stato di pubblicazionePublished - 2013

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Mediterranean Sea
Advection
Chlorophyll
Oceans and Seas
Spatial distribution
Prochlorococcus
Sicily
chlorophyll
Water
Biomass
Nutrients
spatial distribution
Food
nutrient content
chlorophyll a
advection
biomass
water
cells

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

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Dynamics of Two Picophytoplankton Groups inMediterranean Sea: Analysis of the Deep Chlorophyll Maximum by a Stochastic Advection-Reaction-Diffusion Model. / Spagnolo, Bernardo; Denaro, Giovanni; Valenti, Davide; Zgozi, Salem W.; Aronica, Salvatore; Basilone, Gualtiero; Mazzola, Salvatore; Bonanno, Angelo.

In: Default journal, Vol. 8, 2013, pag. e66765(1)-e66765(14).

Risultato della ricerca: Article

Spagnolo, Bernardo ; Denaro, Giovanni ; Valenti, Davide ; Zgozi, Salem W. ; Aronica, Salvatore ; Basilone, Gualtiero ; Mazzola, Salvatore ; Bonanno, Angelo. / Dynamics of Two Picophytoplankton Groups inMediterranean Sea: Analysis of the Deep Chlorophyll Maximum by a Stochastic Advection-Reaction-Diffusion Model. In: Default journal. 2013 ; Vol. 8. pagg. e66765(1)-e66765(14).
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AU - Spagnolo, Bernardo

AU - Denaro, Giovanni

AU - Valenti, Davide

AU - Zgozi, Salem W.

AU - Aronica, Salvatore

AU - Basilone, Gualtiero

AU - Mazzola, Salvatore

AU - Bonanno, Angelo

PY - 2013

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N2 - A stochastic advection-reaction-diffusion model with terms of multiplicative white Gaussian noise, valid for weakly mixed waters, is studied to obtain the vertical stationary spatial distributions of two groups of picophytoplankton, i.e.,picoeukaryotes and Prochlorococcus, which account about for 60% of total chlorophyll on average in Mediterranean Sea. By numerically solving the equations of the model, we analyze the one-dimensional spatio-temporal dynamics of the total picophytoplankton biomass and nutrient concentration along the water column at different depths. In particular, we integrate the equations over a time interval long enough, obtaining the steady spatial distributions for the cell concentrations of the two picophytoplankton groups. The results are converted into chlorophyll a and divinil chlorophyll a concentrations and compared with experimental data collected in two different sites of the Sicily Channel (southern Mediterranean Sea). The comparison shows that real distributions are well reproduced by theoretical profiles. Specifically,position, shape and magnitude of the theoretical deep chlorophyll maximum exhibit a good agreement with theexperimental values.

AB - A stochastic advection-reaction-diffusion model with terms of multiplicative white Gaussian noise, valid for weakly mixed waters, is studied to obtain the vertical stationary spatial distributions of two groups of picophytoplankton, i.e.,picoeukaryotes and Prochlorococcus, which account about for 60% of total chlorophyll on average in Mediterranean Sea. By numerically solving the equations of the model, we analyze the one-dimensional spatio-temporal dynamics of the total picophytoplankton biomass and nutrient concentration along the water column at different depths. In particular, we integrate the equations over a time interval long enough, obtaining the steady spatial distributions for the cell concentrations of the two picophytoplankton groups. The results are converted into chlorophyll a and divinil chlorophyll a concentrations and compared with experimental data collected in two different sites of the Sicily Channel (southern Mediterranean Sea). The comparison shows that real distributions are well reproduced by theoretical profiles. Specifically,position, shape and magnitude of the theoretical deep chlorophyll maximum exhibit a good agreement with theexperimental values.

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