Abstract
Geographic and vertical variations of size-fractionated (0.2–1 μm, 1–10 μm and > 10 μm) Chlorophyll a (Chl.a) concentration, cyanobacteria abundance and heterotrophic bacteria abundance were investigated at 13 stations from 4°S, 160°W to 30°N, 140°E in November 1993. The results indicated a geographic distribution pattern of these parameters with instances of high values occurring in the equatorial region and offshore areas, and with instance of low values occurring in the oligotrophic regions where nutrients were almost undetectable. Cyanobacteria showed the highest geographic variation (ranging from 27×103 to 16,582×103 cell l−1), followed by Chl.a (ranging from 0.048 to 0.178 μg l-1), and heterotrophic bacteria (ranging from 2.84× 103 to 6.50 × 105 cell l-1). Positive correlations were observed between nutrients and Chl.a abundance. Correspondences of cyanobacteria and heterotrophic bacteria abundances to nutrients were less significant than that of Chl.a. The total Chl.a was accounted for 1.0–30.9%, 35.9-53–.7%, and 28.1–57.3% by the >10 μm, 1–10 μm and 0.2–1 μm fractions respectively. Correlation between size-fractionated Chl.a and nutrients suggest that the larger the cell size, the more nutrient-dependent growth and production of the organism. The ratio of pheophytin to chlorophyll imply s that more than half of the > 10 μm and about one third of the 1-10 μm pigment-containing particles in the oligotrophic region were non-living fragments, while most of the 1-10 μm fraction was living cells. In the depth profiles, cyanobacteria were distributed mainly in the surface layer, whereas heterotrophic bacteria were abundant from surface to below the euphotic zone. Chl.a peaked at the surface layer (0-20 m) in the equatorial area and at the nitracline (75–100 m) in the oligotrophic regions. Cyanobacteria were not the principle component of the picoplankton. The carbon biomass ratio of heterotroph to phytoplankton was greater than 1 in the eutrophic area and lower than 1 in oligotrophic waters.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Bird, D. F. & F. Kalff, 1984. Empirical relationship between bacterial abundance and chlorophyll concentration in fresh and marine waters. Can. J. Fish. aquat. Sci. 41: 1015–1023.
Bouteiller, L. A., J. Blanchott & M. Rodier, 1992. Size distribution pattern of phytoplankton in the West Pacific: Toward a generalization for the tropical open ocean. Deep Sea Res. 39: 805–823.
Campbell, L. & H. A. Nolla, 1994. The importance of Prochlorococcus to community structure in the central North Pacific Oceano. Limnol. Oceanogr. 39: 954–961.
Chisholm, S. W., 1992. Phytoplankton size. In Falkowski, G. & A. D. Woodhead (ed.), Primary Productivity and Biogeochemical Cycles in the Sea. Plenum Press, New York: 213–237.
Chisholm, S. W., R. J. Olson, E. R. Zettler, R. Goericke, J. Waterbury & N. Welshmeyer, 1988. A novel free-living prochlorophyte abundant in the oceanic euphotic zone. Nature 334: 340–343.
Chavez, F. P., 1989. Size distribution of phytoplankton in the central and eastern tropical Pacific. Global Biochem. Cycles, 3: 27–35.
Cho, B. C. & F. Azam, 1990. Biogeochemical significance of bacterial biomass in the ocean’s euphotic zone. Mar. Ecol. Prog. Ser. 63: 253–259.
Countiers, C., A. Vaquer, M. Troussellier & J. Lautier, 1994. The smallest eukaryotic organism. Nature 370: 255.
Dickson, M. L. & P. A. Wheeler, 1993. Chlorophyll concentration in the North Pacific: Does a latitudinal gradient exist? Limnol. Oceanogr. 38: 1813–1818.
Dortch, Q. & T. T. Packard, 1989. Differences in biomass structures between oligotrophic and eutrophic marine ecosystems. Deep-Sea Res. 36: 223–240.
Dugdale, R. C. & J. J. Goering, 1967. Uptake of new and regenerated forms of nitrogen in primary productivity. Limnol. Oceanogr. 12: 196–206.
Gomes, H. D. R., J. I. Goes & A. H. Parulekar, 1993. Size-fractionated biomass, photosynthesis and dark carbon dioxide fixation in a trophic oceanic environment. J. Plankton Res. 14: 1307–1329.
Grandinger, R., T. Weisse & T. Pillen, 1993. Significance of picocyanobacteria in the Red Sea and the Gulf of Aden. Bot. mar. 35: 245–250.
Jiao, N.-Z. & R. Wang, 1994. Size-fractionated biomass and production of microplankton in the Jiaozhou Bay. J. Plankton Res. 16:1609–1625.
Kana, T. M. & P. M. Glibert, 1987. Effect of irradianaces up to 2000uEm-2S on marine Synechococcus WH7803. 1. Growth, pigmentation and cell composition. Deep-Sea Res. 34: 479–495.
Krupatkina, D. K., 1990. Estimates of primary production on oligotrophic waters and metabolism of picoplankton: A review. Mar. Microb. Food Web. 4: 87–101.
Martin, J. H., K. H. Coale, K. S. Johnson, S. E. Fitzwater, R. M. Gordon, S. J. Tanner, C. N. Hunter, V. A. Elrod, J. L. Nowicki, T. L. Coley, R. T. Barber, S. Lindley, A. J. Watson, K. Van Scoy, C. S. Law, M. I. Liddicoat, R. Ling, T. Stanton, J. Stockel, C. Collins, A. Anderson, R. Bidigare, M. Ondrusek, M. Latasa, F. J. Mulero, K. Lee, W. Yao, J. Z. Zhang, G. Fredrich, C. Sakamoto, F. Chavez, K. Bick, Z. Kobler, R. Green, P. G. Falkowski, S. W. Chisholm, F. Hoge, R. Swift, J. Yungle, S. Turner, Pl. Nightinggale, A. Hatten, P. Liss & N. W. Tindale, 1994. Testing the iron hypothesis in ecosystems of the equatorial Pacific, Nature 371: 123–129.
Odate, T. & M. Fukuchi, 1994. Surface distribution of picoplankton along the first leg of the JARE-33 cruise, from Tokyo to Freemantle, Australia. Bull. Plankton Soc. Japan 41: 93–104.
Parsons, T. R., Y Maita & C. M. Lalli, 1984. A Manual of Chemical and Biological Method for Seawater Analysis. Pergamon Press: 3–122.
Porter, K. G. & Y. S. Feig, 1980. The use of DAPI for identifying and counting aquatic microflora. Limnol. Oceanogr. 25: 943–948.
SCOR, 1990. Joint Global Ocean Flux Study (JGOFS) science plan. JGOFS report. 5: 1–51.
Suzuki, R. & T. Ishimaru, 1990. An improved method for the determination of phytoplankton chlorophyll using N, N-Dimethylformamide. J. Oceanogr. Soc. Japan 46: 190–194.
Suzuki, M. T., E. B. Sherr & B. F. Sherr, 1993. DAPI direct counting underestimates bacterial abundance and average cell size compared to AO direct counting. Limnol. Oceanogr. 38: 1566–1570.
Tata, K., K. Matsumoto, M. Tata & T. Ochi, 1994. Size distribution of phytoplankton community in Hiroshima Bay. Kagawa Daigaku Nogakubu Gakujutsu Hokoku 46: 27–35.
Veldhuis, M. J. W. & G. W. Kraay, 1993. Cell abundance and fluorescence of picoplankton in relation to growth irradiance and availability in the Red Sea. Neth. J. Sea Res. 31: 135–145.
Wood, A. M., P. K. Horan, K. Muirhead, D. A. Phinney, C. M. Yentsch & J. B. Waterbury, 1985. Discrimination between types of pigments in marine Synechococcus spp. by scanning spectroscopy, epifluoroscence microscopy and flow cytometry. Limnol. Oceanogr. 30: 1303–1315.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1997 Kluwer Academic Publishers
About this paper
Cite this paper
Jiao, N., Ni, IH. (1997). Spatial variations of size-fractionated Chlorophyll, Cyanobacteria and Heterotrophic bacteria in the Central and Western Pacific. In: Wong, YS., Tam, N.FY. (eds) Asia-Pacific Conference on Science and Management of Coastal Environment. Developments in Hydrobiology, vol 123. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5234-1_22
Download citation
DOI: https://doi.org/10.1007/978-94-011-5234-1_22
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6203-9
Online ISBN: 978-94-011-5234-1
eBook Packages: Springer Book Archive