Seed and seedling ecology of piñon and juniper species in the pygmy woodlands of western North America

  title={Seed and seedling ecology of pi{\~n}on and juniper species in the pygmy woodlands of western North America},
  author={Jeanne C. Chambers and Stephen B. Vander Wall and Eugene W Schupp},
  journal={The Botanical Review},
Knowledge of the seed and seedling ecology of the piñon and juniper woodlands of western North America is essential for understanding both the northward migration and expansion of the woodlands during the Holocene (< 11,500 B.P.), and the accelerated expansion of the woodlands since settlement of the West by Anglo-Americans around 200 years ago. We follow the fates of seeds and seedlings of the different piñon and juniper species within the woodlands from seed development to seedling… 
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Abstract Retention and development of fruits containing inviable seeds has been considered anomalous, because such seeds cannot contribute to plant fitness. Although trees in the genus Juniperus are
Efficiency of pollination and satiation of predators determine reproductive output in Iberian Juniperus thurifera woodlands.
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This synthesis reviews current knowledge of pinyon and juniper ecosystems, in both persistent and newly expanded woodlands, for managers, researchers, and the interested public. We draw from a large


Dispersal of singleleaf pinon pine (Pinus monophylla) by seed-caching rodents
Although pinon pines appear to be coevolved or coadapted with corvid (jay and nutcracker) seed dispersers, rodents also serve as important agents of seed dispersal.
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Red cedar seeds passed unharmed through the digestive tract of avian dispersers and showed greate...
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Lagomorphs apparently do not effectively replenish the native perennial seed pool of cheatgrass-dominated disturbances at Dugway, andJuniperus osteosperma (Utah juniper) was the most abundant seed.
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Information gathered on selected carnivorous mammals of the Edwards Plateau of Texas is reported with respect to fruit use and potential seed dispersal of Ashe juniper and Texas persimmon.
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The synchrony of seed production by pinon pines over large geographic areas is interpreted as an evolved mechanism that overwhelms invertebrate seed and cone predators, and increases the numbers of seeds per tree that will be cached by Pinon Jays and other vertebrates.
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Relict stands of Pinus edulis and P. monophylla, and of natural hybrids of these species have been found in Cache and Rich counties. The stands and their sites are described. The P. edulis stand in
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The avian dispersal system of red cedar, a low-quality, fleshy, cone-producing, woody plant, was investigated in southwest Virginia over a 2-year period and single consistent feeders, such as the yellow-rumped warbler, accounted for slow, sustained removal of redcedar cones, whereas flock feeders were responsible for rapid removal of entire cone crops.
Tree age and dominance patterns in Great Basin pinyon-juniper woodlands.
Prior studies of pinyon-juniper woodlands at a few locations have indicated considerable historical expansion of the trees and loss of understory. Whether these changes are a widespread phenomenon
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