Structure and development of a Scalesia pedunculata stand in the Galapagos Islands

Runkle, James R. and Runkle, William A. (2005) Structure and development of a Scalesia pedunculata stand in the Galapagos Islands. Galapagos Research, 63, pp. 12-15.

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Abstract

Stands of Scalesia pedunculata in the Galapagos Islands often develop as single-aged cohorts following episodes of mass death and regeneration. We updated earlier studies on a stand that had regenerated soon after the 1982–3 El Niño event. We quantified stem size distribution and dispersion pattern in a 0.56 ha plot near Los Gemelos on Santa Cruz Island. The plot was dominated (95% of basal area) by S. pedunculata. The stem size distribution showed the increased mean and variance for diameter (since 1987 and 1991) expected of an aging stand. Stems averaged smaller than in 1981, just before the last mass mortality episode. Large S. pedunculata stems were regularly dispersed while smaller stems were clumped and negatively associated with larger stems, implying that intraspecific competition may be important in structuring the stand. CDF Contribution Number 1008.

Item Type: Article
Title: Structure and development of a Scalesia pedunculata stand in the Galapagos Islands
Personal Creator/Author:
CreatorsEmail
Runkle, James R.
Runkle, William A.
Refereed: Yes
Journal or Publication Title: Galapagos Research
Volume: 63
Page Range: pp. 12-15
Date: June 2005
ISSN: 1390-2830
Latitude: -0.616667
Longitude: -90.35
Funders: Wright State University, R.A. Kreps
Issuing Agency: Fundacion Charles Darwin Foundation
Uncontrolled Keywords: Scalesia pedunculata;Los Gemelos;Isla Santa Cruz;Galapagos
Subjects: Biology
Conservation
Item ID: 9966
Depositing User: Ms Sally Taylor
Date Deposited: 08 Sep 2012 17:32
Last Modified: 08 Sep 2012 17:32
Related URLs:
URI: http://aquaticcommons.org/id/eprint/9966

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