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Development of a New Expendable Probe for the Study of Pelagic Ecosystems from Voluntary Observing Ships : Volume 3, Issue 2 (04/06/2007)

By Marcelli, M.

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Book Id: WPLBN0004020328
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File Size: Pages 10
Reproduction Date: 2015

Title: Development of a New Expendable Probe for the Study of Pelagic Ecosystems from Voluntary Observing Ships : Volume 3, Issue 2 (04/06/2007)  
Author: Marcelli, M.
Volume: Vol. 3, Issue 2
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2007
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Donis, D., R. Manzell, G. M., Marcelli, M., Maio, A. D., & Mainardi, U. (2007). Development of a New Expendable Probe for the Study of Pelagic Ecosystems from Voluntary Observing Ships : Volume 3, Issue 2 (04/06/2007). Retrieved from http://worldpubliclibrary.org/


Description
Description: Departement DECOS, Tuscia University, Via S. Giovanni Decollato n. 1, 01100 Viterbo, Italy. Physical and biological processes of the marine ecosystem have a high spatial and temporal variability, whose study is possible only through high resolution and synoptic observations. The Temperature and Fluorescence Launchable Probe was charted in order to answer to the claim of a cost effective temperature and fluorescence expendable profiler, to be used in ships of opportunity. The development of the expendable fluorometer has followed similar concepts of the XBT (a wire conducting the signal to a computer card), but differently from the latter it was developed with an electronic system which can be improved and adapted to several variables measure channels. To reach the aim of a low-cost probe, were utilized commercial components: a glass bulb temperature resistor for the temperature measurement, blue LEDs, a photodiode and available selective glass filters, for the fluorescence measurement. The measurement principle employed to detect phytoplankton's biomass is the active fluorescence. This method is an in vivo chlorophyll estimation, that can get the immediate biophysical reaction of phytoplankton inside the aquatic environment; it is a non-disruptive method which gives real time estimation and avoids the implicit errors due to the manipulation of samples. The possibility of using a continuous profiling probe, with an active fluorescence measurement, is very important in real time phytoplankton's study; it is the best way to follow the variability of sea productivity. In fact, because of the high time and space variability of phytoplankton, due to its capability to answer in a relatively short time to ecological variations in its environment and because of its characteristic patchiness, there isn't a precise quantitative estimation of the biomass present in the Mediterranean Sea.

Summary
Development of a new expendable probe for the study of pelagic ecosystems from voluntary observing ships

Excerpt
Antal, T. K., Venediktov, P. S., Matorin, D. N., et al.: Measurements of phytoplankton photosynthesis rate using a pump and probe fluorometer, Oceanologia, 43, 291–313, 2001.; Balch, W. and Byrne, C. F.: Factors affecting the estimate of primary production from space, Geophys. Res. J., 99, 7555–7570, 1994.; Bosc, E., Bricaud, A., and Antoine, D.: Seasonal and interannual variability in algal biomass and primary production in the Mediterranean Sea as derived from 4 years of SeaWiFS observations, Global Biogeochemical Cycles, 18, GB1005, doi:10.1029/2003GB002034, 2004.; Carr, M.-E., Friedrichs, M. A. M., Schmeltz, M., Aité, M. N., Antoine, D., Arrigo, K. R., Asanuma, I., Aumont, O., Barber, R., Behrenfeld, M., Bidigare, R., Buitenhuis, E., Campbell, J., Ciotti, A., Dierssen, H., Dowell, M., Dunne, J., Esaias, W., Gentili, B., Groom, S., Hoepffner, N., Hishisaka, J., Kameda, T., LeQuéré, C., Lohrenz, S., Marra, J., Mélin, F., Moore, K., Morel, A., Reddy, T., Ryan, J., Scardi, M., Smyth T., Turpie, K., Tilstone, G., Waters, K., and Yamanaka, Y.: A comparison of global estimates of marine primary production from ocean colour, Deep-Sea Res., Part II, 53, 741–770, 2005.; Falkowski, P. G.: The ocean's invisible forest, Scientific American, 287, 38–45, 2002.; Lazzara, L., Bianchi, F., Falcucci, M., Modigh, M., and Ribera D'Alcalà, M.: Pigmenti Clorofilliani, Nova Thalassia, II, 207–223, 1990.; Lewis, M. R., Cullen, J. J., and Platt, T.: Relationship between vertical mixing and phytoplankton: similarity criteria, Mar. Ecol. Prog. Ser, 15, 141–149, 1984.; Lorenzen, C. J.: A method for the continuous measurement of in vivo chlorophyll concentration, Deep-Sea Res., 13, 223–227, 1966.; Mann, K. H. and Lazier, J. R.: Dynamics of Marine Ecosystem, Blakwell Science, 1991.; Marcelli, M., Caburazzi, M., Perilli, A., Piermattei, V., and Fresi, E.: Deep Chlorophyll maximum distribution in the central Tyrrhenian Sea described by a towed ondulating vehicle, Chemistry and Ecology, 21, 351–367, 2005.; Piermattei, V., Bortoluzzi, G., Cozzi, S., Di Maio, A., and Marcelli, M.: Analysis of mesoscale productivity processes in the Adriatic sea: comparison between data acquired by SARAGO, a towed ondulating vehicle, and by CTD casts, Chemistry and Ecology, 22, supp 1, S275–S292, 2006.; Pinardi, N., Allen, I., Demirov, E., De Mey, P., Korres, G., Lascaratos, A., La Traon, P.-Y., Millard, C., Manzella, G., and Tziavros, C.: The Mediterranean ocean Forecasting System, first phase of implementation (1998–2001), Ann. Geophys., 21, 3–20, 2003.; Reseghetti, F., Borghini, M., and Manzella, G. M. R.: Factors affecting the quality of XBT data-results of analyses on profiles from western Mediterranean sea, Ocean. Sci., 3, 59–75, 2007.

 

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