Dwarf mistletoes in forest canopies

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Dwarf mistletoes (Arceuthobium spp.) are parasitic flowering plants found throughout much of western North America on members of the Pinaceae. Heavy infection by these parasites affects biomass distribution on individual trees, and hence within forest canopies. Most dwarf mistletoes induce the formation of witches' brooms on infected hosts, and these brooms can significantly alter the structure of forest canopies as well. Conversely, forest canopy structure greatly affects horizontal and vertical spread of dwarf mistletoes. Dwarf mistletoes interact with other organisms that also inhabit forest canopies, such as birds, mammals, insects, and fungi. The principal interaction is the mistletoes serving as a food source for these organisms, but birds and mammals also use witches' broom as nesting and foraging sites. Another interaction is long-range dissemination of dwarf mistletoe seeds by animal vectors, primarily birds and squirrels.

Original languageEnglish (US)
Pages (from-to)61-71
Number of pages11
JournalNorthwest Science
Volume70
Issue numberSPEC. ISS.
StatePublished - 1996
Externally publishedYes

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Santalales
forest canopy
bird
mammal
birds
Arceuthobium
angiosperm
mammals
witches' broom
parasite
Pinaceae
organisms
squirrels
fungus
insect
seed
food
animal
Angiospermae
biomass

ASJC Scopus subject areas

  • Ecology

Cite this

Dwarf mistletoes in forest canopies. / Mathiasen, Robert L.

In: Northwest Science, Vol. 70, No. SPEC. ISS., 1996, p. 61-71.

Research output: Contribution to journalArticle

Mathiasen, RL 1996, 'Dwarf mistletoes in forest canopies', Northwest Science, vol. 70, no. SPEC. ISS., pp. 61-71.
Mathiasen, Robert L. / Dwarf mistletoes in forest canopies. In: Northwest Science. 1996 ; Vol. 70, No. SPEC. ISS. pp. 61-71.
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