Population structure of Chondrus crispus Stackhouse (Gigartinaceae, Rhodophyta) along the coast of Prince Edward Island, Canada: distribution of gametophytic and sporophytic fronds

Chondrus crispus Stackhouse populations in sublittoral Prince Edward Island are composed of both gametophytes and sporophytes. The overall ratio of phases is ≈ 1:1. Although there were considerable local variations in the distribution of these two generations, the 1:1 ratio is in contrast with previ...

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Veröffentlicht in:Journal of experimental marine biology and ecology 1989, Vol.126 (1), p.45-58
Hauptverfasser: Laura Lazo, M., Greenwell, M., McLachlan, J.
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container_title Journal of experimental marine biology and ecology
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creator Laura Lazo, M.
Greenwell, M.
McLachlan, J.
description Chondrus crispus Stackhouse populations in sublittoral Prince Edward Island are composed of both gametophytes and sporophytes. The overall ratio of phases is ≈ 1:1. Although there were considerable local variations in the distribution of these two generations, the 1:1 ratio is in contrast with previous reports of gametophytic : sporophytic ratios for C. crispus. It is proposed that because of the soft friable substratum disturbance affects the sublittoral biotic community and results in extensive removal of both fronds and plants of C. crispus. The evidence suggests that the gametophytic : sporophytic ratio of fronds in populations of C. crispus in Prince Edward Island results from stochastic events, with both generations having equal chances of becoming established.
doi_str_mv 10.1016/0022-0981(89)90123-8
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ispartof Journal of experimental marine biology and ecology, 1989, Vol.126 (1), p.45-58
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source Elsevier ScienceDirect Journals
subjects Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
Chondrus crispus
Chondrus crispus population
Demecology
Disturbance
Fundamental and applied biological sciences. Psychology
Gametophyte
Life-history ratio
Marine
Plants and fungi
Sporophyte
Substratum
title Population structure of Chondrus crispus Stackhouse (Gigartinaceae, Rhodophyta) along the coast of Prince Edward Island, Canada: distribution of gametophytic and sporophytic fronds
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