EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Factors liberating growth lag of a diatom skeletonema costatum in deep sea water ii. liberation by mixing with surface sea water



Factors liberating growth lag of a diatom skeletonema costatum in deep sea water ii. liberation by mixing with surface sea water



Bulletin of Plankton Society of Japan 38(2): 105-111



To elucidate the liberation effect of surface sea water on the lag period of phytoplankton growth in deep sea water, batch culture experiments were carried out using the diatom Skeletonema costatum (GREVILLE) CLEVE in mixtures of surface sea water (1m depth) and deep sea water (500m depth) collected seasonally off Oshima Island, southern Sagami Bay, Japan. The experimental cultures were conducted at 23.degree. C under a 12h:12h light-dark cycle of 47 .mu.E .cntdot. m-2 .cntdot. s-1. S. costatum grew with a specific growth rate (.mu.; calculated using natural logarithm) of 0.71 .cntdot. day-1 in the sea water of 500m depth, although the culture exhibited a lag period of 2.1 days in the growth. The addition of EDTA did not give any substantial effect on the specific growth rate of S. costatum but reduced the duration of lag period. The increasing % addition of surface sea water produced the same effects as EDTA. These results show that surface sea water possesses such chelating ability as EDTA. The minimum % addition of surface sea water which gave the same liberation effect on the lag period of S. costatum as EDTA 200 .mu.g .cntdot. l-1 changed seasonally. The minimum % addition of surface sea water was negatively correlated with DOC and chlorophyll-.alpha. concentrations. The minimum % addition of surface sea water was 40% in August 1979 but even all of the % addition of surface sea water in March 1980 did not produce the same effect as EDTA 200 .mu.g .cntdot. l-1. These results suggest that the chelating ability of surface sea water fluctuates seasonally corresponding to phytoplankton growth dynamics.

(PDF emailed within 1 workday: $29.90)

Accession: 007342277

Download citation: RISBibTeXText



Related references

Factors liberating growth lag of a diatom skeletonema costatum in deep sea water i. liberation by adding various organic matter. Bulletin of Plankton Society of Japan 38(2): 93-104, 1992

Effects of deep sea water on the growth of a marine diatom species skeletonema costatum. Bulletin of Plankton Society of Japan 35(1): 45-56, 1988

Brackish-water and fresh-water species of the diatom genus -Skeletonema Grev. I. Skeletonema subsalsum (A. cleve) Bethge. Phycologia 14 (4) 283-297, 1975

Brackish water and fresh water species of the diatom genus skeletonema part 2 skeletonema potamos new combination. Journal of Phycology 12(1): 73-82, 1976

Brackish water and fresh water species of the diatom genus skeletonema part 1 skeletonema subsalsum. Phycologia 14(4): 283-297, 1975

Morphological and genetic variation within the diatom skeletonema costatum bacillariophyta evidence for skeletonema pseudocostatum new species. Journal of Phycology 27(4): 514-524, 1991

Effect of short-term variation in irradiance on light harvesting and photosynthesis of the marine diatom Skeletonema costatum: A laboratory study simulating vertical mixing. Journal of General Microbiology 139(9): 2277-2284, 1993

Effects of lead on growth of the marine diatom skeletonema costatum. Marine Biology (Berlin) 50(3): 239-248, 1979

A photobioreactor with pH control: Demonstration by growth of the marine diatom Skeletonema costatum. Journal of Plankton Research 24(6): 557-563, June, 2002

The effect of the chlorinity on the growth of planktonic diatom skeletonema costatum in vitro. Nippon Suisan Gakkaishi 51(11): 1883-1886, 1985

The effects of herbicides and light on the growth of the marine diatom Skeletonema costatum. 1991

Effects of di-n-butyl phthalate and salinity on the growth of the diatom Skeletonema costatum. Bulletin of Environmental Contamination and Toxicology 25(1): 75-78, 1980

Pigments of the marine diatom Skeletonema costatum as influenced by environmental factors and populations dynamics. Invest Pesquera 24: 129-137, 1963

Relationship between the bloom of Skeletonema costatum and water quality or meteorological factors in the northeast part of Osaka Bay. Nippon Suisan Gakkaishi 66(2): 200-206, March, 2000