Cosmopolitan Metapopulations of Free-Living Microbial Eukaryotes

Finlay, Bland J.; Fenchel, Tom

doi:10.1078/143446104774199619

Cited by 228 publications

(159 citation statements)

References 32 publications

Supporting

Mentioning

146

Contrasting

Unclassified

Order By: Relevance

“…The detection of the same bacterial OTUs (32% of all) in both polar regions as well as in temperate sites suggests a potentially ubiquitous distribution for at least some bacterial taxa, which supports the global ubiquity theory. Cosmopolitan distribution of prokaryotes and eukaryotes has been discussed for organisms smaller than one millimeter and usually decreases with increasing organism size (Finlay and Fenchel, 2004;Smith and Wilkinson, 2007;Yang et al, 2010). Finlay and Fenchel (2004) state that the cosmopolitan fraction of organisms in the bacterial size range is usually about 2.5-fold higher than detected in the present study.…”

Section: Discussioncontrasting

confidence: 45%

“…Cosmopolitan distribution of prokaryotes and eukaryotes has been discussed for organisms smaller than one millimeter and usually decreases with increasing organism size (Finlay and Fenchel, 2004;Smith and Wilkinson, 2007;Yang et al, 2010). Finlay and Fenchel (2004) state that the cosmopolitan fraction of organisms in the bacterial size range is usually about 2.5-fold higher than detected in the present study. Cox et al (2016) also found a percentage of ∼35-60% cosmopolitan OTUs in Antarctic fungi and Petz et al (2007) showed that 13% of freshwater ciliate species were shared between the Arctic and the Antarctic.…”

Section: Discussioncontrasting

confidence: 45%

See 1 more Smart Citation

Pole-to-Pole Connections: Similarities between Arctic and Antarctic Microbiomes and Their Vulnerability to Environmental Change

et al. 2017

View full text Add to dashboard Cite

The global biogeography of microorganisms remains poorly resolved, which limits the current understanding of microbial resilience toward environmental changes. Using high-throughput 16S rRNA gene amplicon sequencing, we characterized the microbial diversity of terrestrial and lacustrine biofilms from the Arctic, Antarctic and temperate regions. Our analyses suggest that bacterial community compositions at the poles are more similar to each other than they are to geographically closer temperate habitats, with 32% of all operational taxonomic units (OTUs) co-occurring in both polar regions. While specific microbial taxa were confined to distinct regions, representing potentially endemic populations, the percentage of cosmopolitan taxa was higher in Arctic (43%) than in Antarctic samples (36%). The overlap in polar microbial OTUs may be explained by natural or anthropogenically-mediated dispersal in combination with environmental filtering. Current and future changing environmental conditions may enhance microbial invasion, establishment of cosmopolitan genotypes and loss of endemic taxa.

show abstract

Section: Discussioncontrasting

confidence: 45%

Section: Discussioncontrasting

confidence: 45%

Pole-to-Pole Connections: Similarities between Arctic and Antarctic Microbiomes and Their Vulnerability to Environmental Change

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Given the near-universality of such gradients (Hillebrand 2004), this is curious. The fact, however, that the species richness in recent microbial communities also shows little control by latitudinal gradients (Finlay & Fenchel 2004) may represent a significant analogue, hinting that the ecology of the Ediacarans has important similarities.…”

Section: The Ediacaran Assemblages: a Continuing Conundrummentioning

confidence: 99%

Darwin's dilemma: the realities of the Cambrian ‘explosion’

Morris

2006

Phil. Trans. R. Soc. B

150

View full text Add to dashboard Cite

The Cambrian 'explosion' is widely regarded as one of the fulcrum points in the history of life, yet its origins and causes remain deeply controversial. New data from the fossil record, especially of Burgess Shale-type Lagerstätten, indicate, however, that the assembly of bodyplans is not only largely a Cambrian phenomenon, but can already be documented in fair detail. This speaks against a much more ancient origin of the metazoans, and current work is doing much to reconcile the apparent discrepancies between the fossil record, including the Ediacaran assemblages of latest Neoproterozoic age and molecular 'clocks'. Hypotheses to explain the Cambrian 'explosion' continue to be generated, but the recurrent confusion of cause and effect suggests that the wrong sort of question is being asked. Here I propose that despite its step-like function this evolutionary event is the inevitable consequence of Earth and biospheric change.

show abstract

“…This means that freeliving microbes have a lack of biogeography pattern and a low global diversity (Logares 2006). This capacity of ubiquitous dispersal is driven by huge population sizes leading to low probability of local extinction and, then the most microorganisms with size smaller than 1 mm have worldwide distribution while those larger than 10 mm are much less abundant and rarely cosmopolitan (Fenchel & Finlay 2003, Finlay & Fenchel 2004. Although some molecular studies support the "cosmopolitan hypothesis" (Daugjberg et al 2000) for microalgae this idea is controversy because more recently available data suggest that micro-organisms (including protists and algae) have distribution patterns similar to those known from higher plants and animals, and that these patterns reflect historical (Gondwanan/Laurasian), ecological (tropical/temperate), and continental/local conditions (Coleman 2002, Foissner 2006, Luo et al 2006.…”

Section: Discussionmentioning

confidence: 99%

Flagellate green algae from four water bodies in the state of Rio de Janeiro, Southeast Brazil

Menezes

Mattos

2008

Hoehnea

View full text Add to dashboard Cite

-(Flagellate green algae from four water bodies in the state of Rio de Janeiro, Southeast Brazil). Floristic survey of flagellate green algae (Chlorophyceae and Prasinophyceae) from four water bodies in the state of Rio de Janeiro, southeast Brazil. Samples were collected bimonthly from September 1988 to August 1991. Thirty-five taxa of which 31 in Chlorophyceae (24 Chlamydomonadales and seven Volvocales) and four in Prasinophyceae (Polyblepharidales) were identified. Twenty-three taxa are new records for Brazil and 31 are registered for the first time for Rio de Janeiro State. On basis of cell shape, location of the nucleus and degree of longitudinal striations on the chloroplast surface a new combination, Vitreochlamys lefevrei (Bourr.) Menezes & C. Bicudo, is proposed. Integrating studies among morphological analysis on natural/cultured material and characterizing of reproduction/life cycle as well the correlating between the occurrence of the species and environmental conditions are needed in order to better knowledge the degree of phenotypic plasticity within the members of the flagellate green algae in the country.

show abstract

Cosmopolitan Metapopulations of Free-Living Microbial Eukaryotes

Cited by 228 publications

References 32 publications

Pole-to-Pole Connections: Similarities between Arctic and Antarctic Microbiomes and Their Vulnerability to Environmental Change

Pole-to-Pole Connections: Similarities between Arctic and Antarctic Microbiomes and Their Vulnerability to Environmental Change

Darwin's dilemma: the realities of the Cambrian ‘explosion’

Flagellate green algae from four water bodies in the state of Rio de Janeiro, Southeast Brazil

Contact Info

Product

Resources

About