PICOPHYTOPLANKTONIC COMMUNITY STRUCTURE IN THE SUBTROPICAL PACIFIC OCEAN: A COMPARISON BETWEEN THE OFFSHORE AND COASTAL OCEAN AND CLOSED AND OPEN LAGOONS, IN RELATION WITH NITROGEN NUTRIENT AVAILABILITY
Published 1 January 1997
Jean Blanchot, Loïc Charpy
Citations7
Generate an AI Snapshot to get a quick, structured summary of this paper.
Study Snapshot
ObjectiveStudy objective
MethodsResearch methodology
PopulationPopulation studied
Sample sizeSample sizes
OutcomesStudy outcomes here
ResultsStudy results comes here
LimitationsResearch study limitations comes here
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
TL;DR
In atoll-lagoonal and ocean boarding waters, when NO, t NO2 0.1 UM, small concentrations of NH4' appear to promote Syn abundance, Nevertheless in lagoonal waters additional factors such as the average depth of the lagoon and nitrogen fixation must be taken into account.
Abstract
Picophytoplanktonic community structure is composed of three components: Prochlorococcus marinus (Pro), Synechococcus spp. (Syn) and picoeukaryotes (Peu). The nitrogen nutrients N, = NO, + NOz t NH, are one of the important controlling factors which determine community structure. In the open ocean, when the photic layer is i N, depleted (N, 0.1 pM, the Peu constitute the major component. In atoll-lagoonal and ocean boarding waters, when NO, t NO2 0.1 UM, small concentrations of NH4' appear to promote Syn abundance. Nevertheless in lagoonal waters additional factors such as the average depth of the lagoon and nitrogen fixation must be taken into account.
Keywords
Earth and Planetary SciencesEnvironmental Science
Limnology and OceanographyThe importance of <i>Prochlorococcus</i> to community structure in the central North Pacific Ocean
483 Citations1994Lisa Campbell, H.A. Nolla +1 more
It is suggested that the relative proportion of photosynthetic to heterotrophic bacterial biomass varies among oligotrophic regions of the ocean and that dominance byheterotrophic bacteria is not typical.
Limnology and OceanographyThe distribution and abundance of phototrophic ultraplankton in the North Atlantic1,2
338 Citations1985Lynda S. Murphy, Elin M. Haugen
The numbers of the ultraplankton generally range one order of magnitude less than the cyanob bacteria, but they may equal or exceed cyanobacteria at depth and in northerly latitudes, and the eucaryotic assemblage is numerically dominated by the ultra plankton.
Limnology and OceanographyPigments, size, and distributions of Synechococcus in the North Atlantic and Pacific Oceans
322 Citations1990Robert Olson, Sallie W. Chisholm +2 more
A distinct diel pattern in forward-angle light scatter was observed in cells in the mixed layer over vast regions, which suggests that mixing rates in these areas are slow relative to the abilities of the cells to photoacclimate.
Limnology and OceanographyIron‐limited growth of cyanobacteria: Multiple siderophore production is a common response
306 Citations1994Steven W. Wilhelm, Charles G. Trick
Investigation of the frequency of siderophore production in iron-deficient culture of freshwater and marine cyanobacteria and the effects of extracellular iron chelators on iron uptake in a coccoid marine species confirm that iron chelate production is prevalent amongfreshwater and marine species and that some of these ironChelators function as siders.
FEMS Microbiology LettersDinitrogen-fixing endogenous rhythm in<i>Synechococcus</i>RF-1
190 Citations1986N. Grobbelaar, Tan-Chi Huang +2 more
Under continuous illumination this unicellular aerobic cyanobacterium fixes dinitrogen continuously at a variable and usually low rate, which appears to be the first record of an endogenous rhythm in a prokaryote.
Deep Sea Research Part I Oceanographic Research PapersPicophytoplankton abundance and biomass in the western tropical Pacific Ocean during the 1992 El Niño year: results from flow cytometry
133 Citations1996Jean Blanchot, Martine Rodier
Deep Sea Research Part A Oceanographic Research PapersSize distribution patterns of phytoplankton in the western Pacific: towards a generalization for the tropical open ocean
104 Citations1992Aubert Le Bouteiller, Jean Blanchot +1 more
The relationship evidenced in the western Pacific between the Chl a size pattern and the distribution of procaryotic and eucaryotic algal cells is likely to be similar in the tropical Atlantic: phytoplankton over wide areas has certain well-defined size distribution properties, probably typical of the whole of the tropical open ocean.
Deep Sea Research Part I Oceanographic Research PapersMeridional distribution and carbon biomass of autotrophic picoplankton in the Central North Pacific Ocean during late northern summer 1990
63 Citations1994Joji Ishizaka, Hiroshi Kiyosawa +3 more
The carbon biomass estimates for these organisms showed that these five groups dominated in different areas, and the vertical distribution of carbon biomass did not correspond to that of chlorophyll a in the central gyre and south of the equator because of the larger carbon/ chlorophyLL a ratio of Synechococcus and orange-fluorescing picoplankton relative to this of the other picoplANKton.
Marine ChemistryA high sensitivity method for the determination of nanomolar concentrations of Nitrate and Nitrite in seawater with a technicon autoanalyzer II
49 Citations1988Claude Oudot, Yves Montel
Marine BiologySpatial mesoscale patterns of West Pacific picophytoplankton as analyzed by flow cytometry: their contribution to subsurface chlorophyll maxima
49 Citations1993Atsuhiro Shimada, Takashi Hasegawa +3 more
The results suggest that distribution of the prochlorophytes is greatly affected by nitracline and by light intensity and that their chlorophyll is a major contributor to the subsurface chlorophylla maximum in the pelagic West Pacific Ocean.
Marine BiologySize composition of particulate organic matter in the lagoon of Tikehau atoll (Tuamotu archipelago)
45 Citations1989Jean Blanchot, Loïc Charpy +1 more
Suspended particulate matter was comprehensively investigated from 6 to 17 April 1986 in the lagoon of Tikehau atoll and taxa were identified and counted for the whole plankton (both autotrophic and heterotrophic).
FEMS Microbiology LettersThe cyclic synthesis of the nitrogenase of<i>Synechococcus</i>RF-1 and its control at the transcription level
40 Citations1988Tan-Chi Huang, Te‐Jin Chow +1 more
The results proved that the nitrogenase of Synechococcus RF-1 is synthesized cyclically when the organism is growing in a diurnal light/dark regimen and that this cyclic synthesis is controlled at the transcription level.
Molecular Biology of Nitrogen Fixation in Natural Populations of Marine Cyanobacteria
11 Citations1992Jonathan P. Zehr
An overview of the studies undertaken to determine the molecular and biochemical characteristics that allow nitrogen fixation and photosynthesis to co-occur, and to understand the factors regulating the activity of nitrogenase is presented.