Results 141 to 150 of about 314,412 (387)

Drivers and food web effects of Gonyostomum semen blooms [PDF]

open access: yes, 2013
The flagellate Gonyostomum semen forms dense late-summer blooms in humic lakes and is a nuisance to swimmers because it forms a slimy coat on the skin, causing irritation in sensitive individuals. Increasing occurrence and bloom incidence of G. semen has
Johansson, Karin S. L.
core  

Radium isotopes quantify vertical mixing and reveal large benthic silicate fluxes in anoxic deep waters

open access: yesLimnology and Oceanography, EarlyView.
Abstract Benthic fluxes are important sources of nutrients and dissolved carbon to the water column. Yet, most approaches for quantifying benthic fluxes are labor intensive and cover relatively small areas of the ocean. Here, we use 224Ra to quantify ecosystem‐scale vertical mixing across a largely hypoxic deep water column in the Baltic Sea and ...
Tristan McKenzie   +9 more
wiley   +1 more source

Resonance and frequency-locking phenomena in spatially extended phytoplankton-zooplankton system with additive noise and periodic forces

open access: yes, 2007
In this paper, we present a spatial version of phytoplankton-zooplankton model that includes some important factors such as external periodic forces, noise, and diffusion processes.
  +20 more
core   +1 more source

Inhibition of cosmopolitan toxic diatom, Pseudo‐nitzschia, by seaweeds

open access: yesLimnology and Oceanography, EarlyView.
Abstract Pseudo‐nitzschia is a genus of harmful algal bloom (HAB)‐forming diatoms that can produce domoic acid (DA), a compound known to cause death and disease in marine wildlife as well as amnesic shellfish poisoning in humans. Here, we show the effects of multiple cultivable seaweeds—Saccharina latissima (sugar kelp), Ulva spp., and Gracilaria spp ...
Laine H. Sylvers, Christopher J. Gobler
wiley   +1 more source

Factors associated with blooms of cyanobacteria in a large shallow lake, China

open access: yesEnvironmental Sciences Europe, 2018
Background Eutrophication of freshwater systems can result in blooms of phytoplankton, in many cases cyanobacteria. This can lead to shifts in structure and functions of phytoplankton communities adversely affecting the quality of drinking water sources,
Di Li   +11 more
doaj   +1 more source

Use of ordination and classification procedures to evaluate phytoplankton communities during Superflux II [PDF]

open access: yes
Cluster analysis and an ordination procedure were performed on two data matrices to investigate real and environmental spatial relationships. Multiple regression analysis was used to relate the measured environmental variables to the phytoplankton ...
Marshall, H. G., Rutledge, C. K.
core   +1 more source

Patchiness and Demographic Noise in Three Ecological Examples

open access: yes, 2012
Understanding the causes and effects of spatial aggregation is one of the most fundamental problems in ecology. Aggregation is an emergent phenomenon arising from the interactions between the individuals of the population, able to sense only -at most ...
A. Manor   +59 more
core   +1 more source

Redfield revisited: Insights into freshwater seston carbon : nitrogen : phosphorus stoichiometry

open access: yesLimnology and Oceanography, EarlyView.
Abstract Seston carbon (C), nitrogen (N), and phosphorus (P) stoichiometry plays a fundamental role in aquatic ecosystems, influencing nutrient cycling, primary and secondary production, and trophic interactions. In freshwater systems such as lakes, P limitation is more common, whereas in marine environments, N more frequently limits primary production,
Isabelle M. Andersen   +6 more
wiley   +1 more source

Experiments with lake phytoplankton in large enclosures [PDF]

open access: yes, 1978
The use of large plastic enclosures, or 'Lund tubes', in lakes as a semi-natural basin for experiments, approximating to lakes within lakes, is discussed.
Lund, J.W.G.
core  

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