Freshwater protozoa: biodiversity and ecological function

@article{Finlay1998FreshwaterPB,
  title={Freshwater protozoa: biodiversity and ecological function},
  author={Bland J. Finlay and Genoveva F. Esteban},
  journal={Biodiversity \& Conservation},
  year={1998},
  volume={7},
  pages={1163-1186}
}
  • B. FinlayG. Esteban
  • Published 1 September 1998
  • Environmental Science, Biology
  • Biodiversity & Conservation
The purpose of this article is to pull together various elements from current knowledge regarding the natural history of free-living protozoa in fresh waters. We define their functional role, set the likely limits of ‘biodiversity’, and explore how the two may be related. Protozoa are unicellular, phagotrophic organisms, and 16 phyla of protists contain free-living freshwater protozoan species. They are the most important grazers of microbes in aquatic environments and the only grazers of any… 

Act together—implications of symbioses in aquatic ciliates

The current understanding of symbioses in aquatic ciliates is summarized to identify the many areas in which knowledge is lacking and to stimulate future research by providing an overview on new methodologies and by formulating a number of emerging questions in this field.

Diversity and Dynamics of Active Small Microbial Eukaryotes in the Anoxic Zone of a Freshwater Meromictic Lake (Pavin, France)

A high genetic diversity of unicellular eukaryotes in the permanent anoxic zone of lake Pavin is revealed and the discrimination of active vs. inactive components is allowed.

Investigation on the diversity and function of microphytes and protists in the food web of marine and limnic sediments

The results of this study indicated that the benthic microbial systems of fine sediments went through a seasonal cycle with a primacy of bottom up control in winter and spring followed by an increasing top-down control from spring to summer.

Ubiquitous Dispersal of Free-Living Microorganisms

This chapter concerns with exploring some of the evidence for ubiquitous dispersal, the process of continuous worldwide dispersal of individuals belonging to a species, whereas cosmopolitan refers to species that are capable of population growth in many different places worldwide.

Biodiversity and Biocomplexity of the Protists and an Overview of Their Significant Roles in Maintenance of Our Biosphere

The present review article reminds readers that far from complete knowledge of protistan taxonomic and phylogenetic interrelationships, as well as of their ecology, physiology, biochemistry, and molecular and evolutionary biology, hinders rapid progress in better understanding of their multiple roles in sustaining today's biosphere.

Biogeography and dispersal of micro-organisms: a review emphasizing protists

This review summarizes data on the biogeography and dispersal of bacteria, microfungi and selected protists, such as dinoflagellates, chrysophytes, testate amoebae, and ciliates. Furthermore, it

Functional groups of marine ciliated protozoa and their relationships to water quality

It was shown that aloricate ciliates and tintinnids represented different roles in structuring and functioning of the communities, suggesting that the ciliate communities may be constructed by several functional groups in response to the environmental conditions.

Planktonic protist communities in a semi-enclosed mariculture pond: structural variation and correlation with environmental conditions

It was concluded that planktonic protists are potentially useful bioindicators of water quality in a semi-enclosed mariculture system and were strongly correlated with water temperature and abundances of bacteria.
...

References

SHOWING 1-10 OF 123 REFERENCES

The diversity and ecological role of protozoa in fresh waters

The number of extant species of protozoa may be quite modest (the global number of ciliate species is estimated at 3000), and most of them probably have cosmopolitan distributions, which will undoubtedly make it easier to carry out further tasks, e.g. understanding the role ofprotozoan species diversity in the natural environment.

Biodiversity at the Microbial Level: The Number of Free-Living Ciliates in the Biosphere

An accurate picture of ciliate diversity on a global scale will require substantial taxonomic revision of many long-established and crowded genera, together with the investigation and description of new forms from previously unexplored habitats.

The global diversity of protozoa and other small species.

  • B. Finlay
  • Environmental Science
    International journal for parasitology
  • 1998

Local versus global diversity of microorganisms : cryptic diversity of ciliated protozoa

Observations support the assumption that in the case of microorganisms everything is everywhere and that their global species diversity is relatively limited.

Protozoan diversity: converging estimates of the global number of free-living ciliate species.

Diversity of free-living ciliates in the sandy sediment of a Spanish stream in winter

The number of (phenotypic) ciliate species co-existing in 1 m2 of sandy river sediment at a maximum temperature of 4 °C was determined; and the ecological mechanism facilitating their co-existence was determined.

The importance of Protozoa in controlling the abundance of planktonic algae in lakes

Apart from ciliates, there are other protozoans which can form an important element in the herbivorous zooplankton of lakes and have been underrated or neglected in studies of the quantitative relationships between primary and secondary production in the plankton.

On the abundance and distribution of protozoa and their food in a productive freshwater pond.

Planktonic ciliate species diversity as an integral component of ecosystem function in a freshwater pond.

Physiological ecology of free-living protozoa

There are about 20,000 species of the single-celled animal-like organisms we call protozoa, and they are the most abundant phagotrophs in the biosphere. One milliliter of sea water contains about
...