Protozoan diversity: Converging estimates of the global number of free-living ciliate species
Authors: Finlay, B.J., Esteban, G.F. and Fenchel, T.
Journal: Protist
Volume: 149
Issue: 1
Pages: 29-37
ISSN: 1434-4610
DOI: 10.1016/S1434-4610(98)70007-0
Abstract:Protozoa are the most abundant phagotrophs in the biosphere, but no scientific strategy has emerged that might allow accurate definition of the dimensions of protozoan diversity on a global scale. We have begun this task by searching for the common ground between taxonomy and ecology. We have used two methods - taxonomic analysis, and extrapolation from ecological datasets - to estimate the global species richness of free-living ciliated protozoa in the marine interstitial and fresh-water benthos. The methods provide estimates that agree within a factor of two, and it is apparent that the species-area curves for ciliates must be almost flat (the slope z takes the very low value of 0.043 in the equation: [number of species] = [constant][area](z)). Insofar as independent ecological datasets can be extrapolated to show similiar, flat, species-area relations, and that these converge with an independent estimate from taxonomic analysis, we conclude that the great majority of free-living ciliates are ubiquitous. This strengthens our recent claim that the global species richness of free-living ciliated protozoa is relatively low (~3000).
Source: Scopus
Protozoan diversity: converging estimates of the global number of free-living ciliate species.
Authors: Finlay, B.J., Esteban, G.F. and Fenchel, T.
Journal: Protist
Volume: 149
Issue: 1
Pages: 29-37
ISSN: 1434-4610
DOI: 10.1016/S1434-4610(98)70007-0
Abstract:Protozoa are the most abundant phagotrophs in the biosphere, but no scientific strategy has emerged that might allow accurate definition of the dimensions of protozoan diversity on a global scale. We have begun this task by searching for the common ground between taxonomy and ecology. We have used two methods - taxonomic analysis, and extrapolation from ecological datasets - to estimate the global species richness of free-living ciliated protozoa in the marine interstitial and freshwater benthos. The methods provide estimates that agree within a factor of two, and it is apparent that the species-area curves for ciliates must be almost flat (the slope z takes the very low value of 0.043 in the equation: [number of species] = [constant][area](z)). Insofar as independent ecological datasets can be extrapolated to show similiar, flat, species-area relations, and that these converge with an independent estimate from taxonomic analysis, we conclude that the great majority of freeliving ciliates are ubiquitous. This strengthens our recent claim that the global species richness of free-living ciliated protozoa is relatively low (∼3000).
Source: PubMed
Protozoan diversity: Converging estimates of the global number of free-living ciliate species
Authors: Finlay, B.J., Esteban, G.F. and Fenchel, T.
Journal: PROTIST
Volume: 149
Issue: 1
Pages: 29-37
ISSN: 1434-4610
DOI: 10.1016/S1434-4610(98)70007-0
Source: Web of Science (Lite)
Protozoan diversity:converging estimates of the global number of free-living ciliates species
Authors: Finlay, B.J., Esteban, G.F. and Fenchel, T.
Journal: Protist
Volume: 149
Pages: 29-37
ISSN: 1434-4610
Abstract:Protozoa are the most abundant phagotrophs in the biosphere, but no scientific strategy has emerged that might allow accurate definition of the dimensions of protozoan diversity on a global scale. We have begun this task by searching for the common ground between taxonomy and ecology.
We have used two methods - taxonomic analysis, and extrapolation from ecological datasets - to estimate the global species richness of free-living ciliated protozoa in the marine interstitial and freshwater benthos. The methods provide estimates that agree within a factor of two, and it is apparent that the species-area curves for ciliates must be almost flat (the slope z takes the very low value of 0.043 in the equation: [number of species] = [constant][area]Z). Insofar as independent ecological datasets can be extrapolated to show similiar, flat, species-area relations, and that these converge with an independent estimate from taxonomic analysis, we conclude that the great majority of freeliving ciliates are ubiquitous. This strengthens our recent claim that the global species richness of free-living ciliated protozoa is relatively low (-3000).
Source: Manual
Protozoan diversity: converging estimates of the global number of free-living ciliate species.
Authors: Finlay, B.J., Esteban, G.F. and Fenchel, T.
Journal: Protist
Volume: 149
Issue: 1
Pages: 29-37
eISSN: 1618-0941
ISSN: 1434-4610
DOI: 10.1016/s1434-4610(98)70007-0
Abstract:Protozoa are the most abundant phagotrophs in the biosphere, but no scientific strategy has emerged that might allow accurate definition of the dimensions of protozoan diversity on a global scale. We have begun this task by searching for the common ground between taxonomy and ecology. We have used two methods - taxonomic analysis, and extrapolation from ecological datasets - to estimate the global species richness of free-living ciliated protozoa in the marine interstitial and freshwater benthos. The methods provide estimates that agree within a factor of two, and it is apparent that the species-area curves for ciliates must be almost flat (the slope z takes the very low value of 0.043 in the equation: [number of species] = [constant][area](z)). Insofar as independent ecological datasets can be extrapolated to show similiar, flat, species-area relations, and that these converge with an independent estimate from taxonomic analysis, we conclude that the great majority of freeliving ciliates are ubiquitous. This strengthens our recent claim that the global species richness of free-living ciliated protozoa is relatively low (∼3000).
Source: Europe PubMed Central