Studies on the growth rates of lichens

Richard A. Armstrong

Research output: Contribution to conferencePaper

Abstract

Progress in the field of lichen growth rate studies is briefly reviewed. The application of a new method of measuring growth rate to thalli of different size has led to the conclusion that there are changes in the radial growth rate during the life of a lichen thallus. For most of the life of a lichen thallus the radial growth rate is constant and the thallus radius increases linearly. Preceding the linear phase the radial growth rate increases with time and the thallus radius increases logarithmically. There is no evidence for a postlinear phase in the radial growth of a lichen thallus. Studies on the growth rate of lichens are applied both to the problems of determining the age of a lichen thallus on an undated susbtratum and to an ecological investigation in the field.
Original languageEnglish
Publication statusPublished - 1976
EventSystematics Association and British Lichen Society Conference: Lichenology, Progress and Problems - Bristol (UK)
Duration: 1 Apr 1974 → …

Conference

ConferenceSystematics Association and British Lichen Society Conference: Lichenology, Progress and Problems
CityBristol (UK)
Period1/04/74 → …

Fingerprint

lichens
radii

Keywords

  • lichen growth rate
  • thalli
  • lichen

Cite this

Armstrong, R. A. (1976). Studies on the growth rates of lichens. Paper presented at Systematics Association and British Lichen Society Conference: Lichenology, Progress and Problems, Bristol (UK), .
Armstrong, Richard A. / Studies on the growth rates of lichens. Paper presented at Systematics Association and British Lichen Society Conference: Lichenology, Progress and Problems, Bristol (UK), .
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author = "Armstrong, {Richard A.}",
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note = "Systematics Association and British Lichen Society Conference: Lichenology, Progress and Problems ; Conference date: 01-04-1974",

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Armstrong, RA 1976, 'Studies on the growth rates of lichens' Paper presented at Systematics Association and British Lichen Society Conference: Lichenology, Progress and Problems, Bristol (UK), 1/04/74, .

Studies on the growth rates of lichens. / Armstrong, Richard A.

1976. Paper presented at Systematics Association and British Lichen Society Conference: Lichenology, Progress and Problems, Bristol (UK), .

Research output: Contribution to conferencePaper

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T1 - Studies on the growth rates of lichens

AU - Armstrong, Richard A.

PY - 1976

Y1 - 1976

N2 - Progress in the field of lichen growth rate studies is briefly reviewed. The application of a new method of measuring growth rate to thalli of different size has led to the conclusion that there are changes in the radial growth rate during the life of a lichen thallus. For most of the life of a lichen thallus the radial growth rate is constant and the thallus radius increases linearly. Preceding the linear phase the radial growth rate increases with time and the thallus radius increases logarithmically. There is no evidence for a postlinear phase in the radial growth of a lichen thallus. Studies on the growth rate of lichens are applied both to the problems of determining the age of a lichen thallus on an undated susbtratum and to an ecological investigation in the field.

AB - Progress in the field of lichen growth rate studies is briefly reviewed. The application of a new method of measuring growth rate to thalli of different size has led to the conclusion that there are changes in the radial growth rate during the life of a lichen thallus. For most of the life of a lichen thallus the radial growth rate is constant and the thallus radius increases linearly. Preceding the linear phase the radial growth rate increases with time and the thallus radius increases logarithmically. There is no evidence for a postlinear phase in the radial growth of a lichen thallus. Studies on the growth rate of lichens are applied both to the problems of determining the age of a lichen thallus on an undated susbtratum and to an ecological investigation in the field.

KW - lichen growth rate

KW - thalli

KW - lichen

M3 - Paper

ER -

Armstrong RA. Studies on the growth rates of lichens. 1976. Paper presented at Systematics Association and British Lichen Society Conference: Lichenology, Progress and Problems, Bristol (UK), .