Results 1 to 10 of about 162,994 (308)

The relationship between some physicochemical parameters and plankton composition on fish production in ponds [PDF]

open access: yes, 2005
The effect of physico-chemical parameters and plankton composition on fish production in ponds was investigated in six fish farms for eight weeks. The physicochemical parameters investigated were temperature=25-30 plus or minus C, transparency=0.45-0.57m,
Adeogun, O.A.   +3 more
core  

Limnology of Four Bauxite Open-Pit Lakes [PDF]

open access: yes, 1972
The aquatic flora and fauna and 18 physicochemical characteristics of four bauxite open-pit lakes were studied from September 1969 to August 1970. The least acid lake (pH 3.4-4.4) supported 49 different aquatic insects, plankton, and higher aquatic ...
Harp, George L., Hubbard, Ronald D.
core   +2 more sources

A turbulent diatom vs dinoflagellate phytoplankton biomass model [PDF]

open access: yes, 2013
Phytoplankton blooms play an important role in global primary productivity and the dynamics of blooms are of interest to modellers. Diatom dominated phytoplankton blooms followed by dinoflagellate blooms are common in the Southern Benguela, and are often
Kennedy, Kristen
core  

Bioluminescent Plankton

open access: yes
Those that are lucky enough to have seen a bioluminescent beach say it is a fantastic spectacle, like few on Earth. The sparks of blue or green light that accompany the water in the winding breaking of the waves captivate young and old alike. I, unfortunately, have never seen it, although I have seen occasional sparks in the night water, and I have ...
openaire   +2 more sources

The silent majority: Pico- and nanoplankton as ecosystem health indicators for marine policy

open access: yesEcological Indicators
A healthy marine ecosystem is a fully functioning system, able to supply ecosystem services whilst still maintaining resilience to human-induced environmental change.
Abigail McQuatters-Gollop   +13 more
doaj   +1 more source

On the structure of the seminal receptacle in cyclopids (Copepoda, Cyclopoida). [Translation from: Informatsionnyi Byulleten Biologiya Vnutrennikh Vod (6) 26-31, 1970.] [PDF]

open access: yes, 1974
The seminal bag, or seminal receptacle, forms a characteristic organ of cyclopids, serving for retention of the sperms discharged from the spermatophores.
Filimonov, L. A.
core  

Strategic ecosystem studies of large slow flowing lowland rivers. Progress report: April - October 1989 [PDF]

open access: yes, 1989
This report covers the period April to September, 1989. During this period sampling of invertebrates has concentrated on planktonic animals and those associated with one of the dominant macrophytes in the system, Nuphar lutea, the yellow water lily ...
Bass, J.A.B., Pinder, L.C.V.
core   +1 more source

Species richness and intraspecific variation interactively shape marine diatom community functioning

open access: yesLimnology and Oceanography Letters
Biodiversity generally increases productivity in ecosystems; however, this is mediated by the specific functional traits that come with biodiversity loss or gain and how these traits interact with environmental conditions.
Patrick K. Thomas   +4 more
doaj   +1 more source

Phytoplankton Diversity as Ecological Indicator in Jimbaran Bay Waters [PDF]

open access: yes, 2014
A study was carried out to evaluate the ecological condition in Jimbaran Bay Waters by using Phytoplankton Diversity Index. The study was conducted at Balangan, Pemuda, Jimbaran, Kedonganan, Kelan and Segara Beach located in Jimbaran Bay. Shannon-Wiener
Perwira, I. Y. (Ima), Ulinuha, D. (Devi)
core  

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