Results 101 to 110 of about 9,625 (223)

Tightly coupled carbon, nitrogen, and iron utilization by bacteria in the lower photic zone of the North Pacific Subtropical Gyre

open access: yesLimnology and Oceanography, Volume 71, Issue 1, January 2026.
Abstract The metabolism of heterotrophic bacteria acts as a key control on the turnover of organic matter in the ocean. However, much remains unknown about how nutrient availability, particularly iron concentration, impacts bacterial growth. In the dimly lit waters of the lower photic and upper mesopelagic zones, the attenuation of sinking particulate ...
Lauren E. Manck   +8 more
wiley   +1 more source

Seasonal and spatial patterns of picophytoplankton growth, grazing and distribution in the East China Sea [PDF]

open access: yes, 2014
Dynamics of picophytoplankton population distribution in the East China Sea (ECS), a marginal sea in the western North Pacific Ocean, were studied during two cruises in August 2009 (summer) and January 2010 (winter).
Chen, B.   +6 more
core   +2 more sources

The rDNA Diversity, Interseasonal Dynamic, and Functional Role of Cyanobacteria Synechococcus in the Sub-Arctic White Sea

open access: yesPlants
Planktonic unicellular cyanobacteria are the dominant biomass producers and carbon fixers in the global ocean ecosystem, but they are not abundant in polar seawater.
Tatiana A. Belevich   +3 more
doaj   +1 more source

The trophic role and impact of plankton ciliates in the microbial web structure of a tropical polymictic lake dominated by filamentous cyanobacteria

open access: yesJournal of Limnology, 2016
The recent interest in the plankton structures and dynamics in tropical and subtropical lakes has revealed important trends that set these lakes apart from temperate lakes, and one of the main differences is the enhanced importance of the microbial food ...
Alfonso Esquivel   +4 more
doaj   +1 more source

Unusual behaviour of phototrophic picoplankton in turbid waters

open access: yesPLOS ONE, 2017
Autotrophic picoplankton (APP) abundance and contribution to phytoplankton biomass was studied in Hungarian shallow lakes to test the effect of inorganic turbidity determining the size distribution of the phytoplankton. The studied lakes displayed wide turbidity (TSS: 4-2250 mg l-1) and phytoplankton biomass (chlorophyll a: 1-460 μg l-1) range, as well
Boglárka Somogyi   +4 more
openaire   +5 more sources

An assessment of the physical, chemical, and biological properties of Christine Lake, NH [PDF]

open access: yes, 2004
As part of a comparative assessment of seven New Hampshire lakes, performed throughout the month of September 2003, students and faculty from the University of New Hampshire’s Center for Freshwater Biology sampled Christine Lake in Stark, NH. The goal of
Godkin, W. Travis
core   +2 more sources

Biodiversity of Australian marine macroalgae — A progress report [PDF]

open access: yes, 1998
The biodiversity of Australian macroalgae is assessed by reference to species numbers recorded for the various biogeographical and political regions. The figures show a marked disparity between northern and southern Australia, with the former apparently ...
Cowan, R.A.   +2 more
core   +2 more sources

Productivity regime and phytoplankton size structure in the Arabian Sea [PDF]

open access: yes, 1993
The productivity regime and size structure of phytoplankton are described for three different epipelagic systems in the Arabian Sea during the inter-monsoon period in spring 1987: (1) the coast of Oman; (2) the central Arabian Sea; and (3) the shelf off ...
Jochem, Frank J.   +2 more
core   +1 more source

Experimental Tests of Nutrient Limitation in Freshwater Picoplankton [PDF]

open access: yesApplied and Environmental Microbiology, 1989
On the basis of correlative studies, picoplankton in Calder Lake, New York, are apparently unaffected by seasonal fluxes in nutrient (N and P) levels. In this small eutrophic lake, picoplankton (<2.0- to 0.2-μm size) and nanoplankton (<20 to >2 μm) predominate. Microplankton (>20 μm) are typically least important. Experiments were conducted
openaire   +2 more sources

Estimation of picoplankton

open access: yes, 1991
The method proposed for the measurement of the picoplankton density, uses epifluorescence microscopy, which allows the detection of all the cells with their own or/and induced fluorescence. Direct counts may lead to an overestimation of the viable counts since we cannot discriminate between living and dead cells. We appropriately modified the method of
Maugeri, T. L.   +2 more
openaire   +1 more source

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