1969
DOI: 10.1038/222432a0
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Possible Contamination of Earth by Lunar or Martian Life

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Cited by 5 publications
(2 citation statements)
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“…The first algal virus was discovered only recently, viruses parasitizing on fungi are still very incompletely known. In soil samples the total count of microbial types is invariably higher than the viable count which points at many undescribed taxa also in these groups (M. Alexander 1969).…”
Section: Taxa Galore But How Many?mentioning
confidence: 99%
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“…The first algal virus was discovered only recently, viruses parasitizing on fungi are still very incompletely known. In soil samples the total count of microbial types is invariably higher than the viable count which points at many undescribed taxa also in these groups (M. Alexander 1969).…”
Section: Taxa Galore But How Many?mentioning
confidence: 99%
“…Other important and unorthodox fields contributing heavily towards the manysidedness of modern systematics are ecology and ethology. At the Ann Arbor symposium R. D. Alexander (1969) presented a review of the theoretical aspects of 'comparative animal behavior and systematics'. He stated that behavior has replaced morphology as the main tool of alpha-taxonomy in groups containing, collectively, between 25 and 50 thousand species (Anura, Ensifera, Caelifera, Auchenorrhyncha, Lampyridae), "and in the case of acoustical and visual signals, it has proved to be of enormous (I would say, unparalleled) value not only in distinguishing species but also in locating and collecting specimens and in tracing geographic and ecological distributions and seasonal life histories".…”
Section: Further Progress By Unorthodoxymentioning
confidence: 99%