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Effects on the Animal Community of Dislodgment of Holdfasts of Macrocystis pyrifera

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Title:Effects on the Animal Community of Dislodgment of Holdfasts of Macrocystis pyrifera
Authors:Vasquez, Julio A.
Date Issued:Apr 1993
Publisher:University of Hawaii Press
Citation:Vasquez JA. 1993. Effects on the animal community of dislodgment of holdfasts of Macrocystis pyrifera. Pac Sci 47(2): 180-184.
Abstract:Effects of natural dislodgment of holdfasts of Macrocystis pyrifera
(L.) C. Agardh on the associated holdfast community were studied during a
110-day period. Six holdfasts were collected at the beginning of the study and
analyzed to determine the abundance of major taxa at time O. Forty-four
holdfasts were detached from the rocky substrate and suspended on three
midwater buoys to simulate natural dislodgment and drift in the kelp forest. The
most abundant taxa associated with attached and drift holdfasts were decapod
crustaceans, mollusks, polychaetes, ophiuroids, echinoids, asteroids, isopods,
and amphipods. Only amphipods and isopods increased significantly in density
in drift holdfasts during the experimental period. All other invertebrate taxa
showed a decrease in abundance during the 3-month experiment.
Appears in Collections: Pacific Science Volume 47, Number 2, 1993

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