Results 191 to 200 of about 8,254 (223)

Ammonium regeneration by microzooplankton in the Oslofjord

Marine Biology, 1982
Concentrations of dissolved inorganic nitrogen compounds above the pycnocline in the Oslofjord are very low in the summer, with turnover times of the inorganic N pools of no more than a few hours. To investigate the possibility that continued phytoplankton growth in the summer depends on ammonium excretion by microzooplankton, rates of NH
E. Paasche, S. Kristiansen
openaire   +1 more source

Zooplankton feeding ecology: bacterivory by metazoan microzooplankton

Journal of Experimental Marine Biology and Ecology, 1992
Bacterivory by the rotifer Brachionus plicatilis Muller, nauplii and copepodites of the copepods Centropages Kroyer sp. and Acartia tonsa Dana, and the tintinnid Favella panamensis Kofoid & Campbell was examined using fluorescently labelled bacteria (FLB) and epifluorescence microscopy.
Jefferson T. Turner, Patricia A. Tester
openaire   +1 more source

Experimental evidence for internal predation in microzooplankton communities

Marine Biology, 2013
The fate of microzooplankton production, whether it is channeled to mesozooplankton or recycled within the microbial food web, has major implications for the oceanic carbon cycle. The aim of this study was to estimate internal predation within naturally occurring microzooplankton communities.
Gayantonia Franzé, Monica Modigh
openaire   +1 more source

Microzooplankton and seston in Akkeshi Bay, Japan

Hydrobiologia, 1976
Microzooplankton populations and other seston components in the water column were sampled from a central station in Akkeshi Bay, Japan for a year. The measurements reported in the present study constitute the first work on seasonal variation of microzooplankton and other seston components in Akkeshi Bay.
openaire   +1 more source

Microzooplankton Feeding Behavior and the Levy Walk

1990
We propose a Levy random walk model for the grazing behavior of swimming microzooplankton. In this model the path of the organism consists of straight line segments which are traversed at constant speed. The segments are at random angles, which correspond to sudden changes in direction, and the lengths of the line segments are random, with probability ...
J. Klafter, B. S. White, M. Levandowsky
openaire   +1 more source

Grazing impact of microzooplankton upon phytoplankton

2009
Alterations of freshwater flow regimes and increasing eutrophication can lead to alterations in phytoplankton biomass, composition, and growth in estuaries and adjacent coastal waters. Since phytoplankton is the first trophic level of most aquatic foodwebs, these changes can be propagated to other biological compartments, eventually impacting water ...
Barbosa, Ana B., Domingues, Rita B.
openaire   +1 more source

Microzooplankton herbivory during the diatom-Phaeocystis spring

2011
The dilution technique was used to investigate microzooplankton grazing and phytoplankton growth in the eastern English Channel during the diatom-Phaeocystisspring succession from January 2009 to June 2009. Four periods were defined based on phytoplankton composition: Periods 1, 2 and 4 composed of distinct diatom communities of small (5-20 μm length ...
Grattepanche, J.-D., Vincent, Dorothée, Breton, Elsa, Christaki, Urania   +3 more
openaire   +1 more source

Guilds of ciliate microzooplankton in the Chesapeake Bay

Estuarine, Coastal and Shelf Science, 1991
Abstract The composition and abundance of three major guilds, or different trophic groups, of ciliates are reported for the Chesapeake Bay. Ciliates were classified either (a) macrophagous (consumers of nanoplankton-size or larger prey), (b) microphagous (consumers of picoplankton-size prey), or (c) predatory (consumers of other ciliates).
openaire   +1 more source

Winter distribution of microzooplankton in the Nordic Seas

No abstracts are to be cited without prior reference to the author.Winter investigations of both phytoplankton and microzooplankton in open oceans are few, hence we know very little about the processes taking place outside the traditional growth seasons.
Hegseth, Else Nøst, Backhaus, Jan
openaire   +1 more source

About microzooplankton

Deep Sea Research Part B. Oceanographic Literature Review, 1979
openaire   +1 more source