Results 31 to 40 of about 8,172 (206)

Microzooplankton grazing along the Western Antarctic Peninsula [PDF]

Aquatic Microbial Ecology, 2013
The significance of microzooplankton as grazers in pelagic ecosystems has been established, yet relatively few studies of microzooplankton grazing, compared to that of macro- zooplankton, have been conducted in the Southern Ocean. We report phytoplankton and bacterial growth and grazing mortality rates along the Western Antarctic Peninsula (WAP), a ...
Garzio, Lori M., Steinberg, Deborah K., Erickson, Matthew, Ducklow, Hugh W.   +3 more
openaire   +2 more sources

Grazing mortality as a controlling factor in the uncultured non-cyanobacterial diazotroph (Gamma A) around the Kuroshio region [PDF]

Biogeosciences
Nitrogen-fixing microorganisms (diazotrophs) significantly influence marine productivity by reducing nitrogen gas into bioavailable nitrogen. Recently, non-cyanobacterial diazotrophs (NCDs) have been identified as important contributors to marine ...
T. Sato, T. Sato, T. Yamaguchi, K. Hidataka, S. Sogawa, T. Setou, T. Kodama, T. Kodama, T. Shiozaki, K. Takahashi   +9 more
doaj   +1 more source

Planktonic foraminiferal assemblages reflect warming during two recent mid-latitude marine heatwaves

Frontiers in Marine Science, 2023
Under future climate scenarios, ocean temperatures that are presently extreme and qualify as marine heatwaves (MHW) are forecasted to increase in frequency and intensity, but little is known about the impact of these events on one of the most common ...
M. Kelsey Lane, Jennifer S. Fehrenbacher, Jennifer L. Fisher, Melanie R. Fewings, Byron C. Crump, Craig M. Risien, Grace M. L. Meyer, Faith Schell   +7 more
doaj   +1 more source

Saturation Approach to Determine Grazing Mortality in Picoeukaryote and Synechococcus Populations

Frontiers in Marine Science, 2022
A substantial component of phytoplankton production in the oceans is channeled through protistan grazers but understanding what dictates the magnitude of this process on a regional and temporal basis is limited, in part, by a shortage of experimental ...
Stephen D. Archer, Laura C. Lubelczyk, Moriah Kunes, Moriah Kunes, Kathryn McPhee, Kathryn McPhee, Walter Dawydiak, Walter Dawydiak, Michael Staiger, Michael Staiger, Kevin M. Posman, Nicole J. Poulton   +11 more
doaj   +1 more source

Characterization of plankton from the Galveston estuary [PDF]

, 1992
The purpose of this report is to summarize the published studies on phytoplankton and zooplankton in the Galveston Estuary. Before this project had begun, it was determined that there was insufficient long term data on plankton in the Galveston Estuary ...
Buskey, Edward Joseph, 1952-, Schmidt, Keith   +1 more
core   +1 more source

Linking long-term changes of the zooplankton community to the environmental variability at the EPEA Station (Southwestern Atlantic Ocean)

Marine and Fishery Sciences, 2021
A significant sea surface temperature increase has been reported for the Southwestern Atlantic Ocean between 20° S-50° S over the last decades. Zooplankton organisms are highly sensitive to temperature rise.
María Delia Viñas, Georgina D. Cepeda, Moira Luz Clara   +2 more
doaj   +1 more source

Effect of Grazing-Mediated Dimethyl Sulfide (DMS) Production on the Swimming Behavior of the Copepod Calanus helgolandicus [PDF]

, 2013
Chemical interactions play a fundamental role in the ecology of marine foodwebs. Dimethyl sulfide (DMS) is a ubiquitous marine trace gas that acts as a bioactive compound by eliciting foraging behavior in a range of marine taxa including the copepod ...
Bode, Nikolai, Breckels, Mark, Codling, Edward, Steinke, Michael   +3 more
core   +2 more sources

Organization of planktonic Tintinnina assemblages in the Atlantic Ocean

Frontiers in Marine Science, 2023
Marine plankton have different biogeographical distribution patterns. However, it is not clear how the entire plankton assemblage is composed of these species with distinct biogeographical patterns.
Haibo Li, Haibo Li, Haibo Li, Glen A. Tarran, Giorgio Dall’Olmo, Giorgio Dall’Olmo, Andrew P. Rees, Michel Denis, Chaofeng Wang, Chaofeng Wang, Chaofeng Wang, Gérald Grégori, Yi Dong, Yi Dong, Yi Dong, Yuan Zhao, Yuan Zhao, Yuan Zhao, Wuchang Zhang, Wuchang Zhang, Wuchang Zhang, Tian Xiao, Tian Xiao, Tian Xiao   +23 more
doaj   +1 more source

The fractional Keller-Segel model [PDF]

, 2006
The Keller-Segel model is a system of partial differential equations modelling chemotactic aggregation in cellular systems. This model has blowing up solutions for large enough initial conditions in dimensions d >= 2, but all the solutions are regular in
Brenner M P, Brenner M P, Carlos Escudero, Herrero M A, Herrero M A, Klafter J, Levandowsky M, Murray J D, Nagai T, Osaki K   +9 more
core   +1 more source

Feeding rates of macro‐ and microzooplankton on heterotrophic nanoflagellates [PDF]

Limnology and Oceanography, 1996
Thirteen metazooplankton and three ciliate species were examined for their ability to prey on heterotrophic nanoflagellates (HNF). Grazing losses of two species of HNF, Bodo saltans (kinetoplastid) and Spumella sp. (chrysomonad), were estimated in batch experiments by the disappearance of HNF in the presence or absence of predators.
Jürgens, K., Wickham, S., Rothhaupt, K., Santer, B.   +3 more
openaire   +2 more sources