Although the negative consequences of habitat fragmentation in forested landscapes are becoming better understood, we still know remarkably little about the effects of tree removal on the pollination dynamics of the remaining trees. Oaks and many other trees of temperate regions worldwide are wind-pollinated and require the transfer of pollen from neighboring trees to produce seed. When pollen is released into the air, the density of pollen grains declines rapidly with increasing distance from the source. Isolated oak trees may therefore receive insufficient pollen, and acorn numbers may be reduced.
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Treeshelters Cover the English Landscape
Oaks ‘n’ Folks – Volumne 14, Issue 2 – August 1999 For the last several months, I have been living in southern England while working at the British Forestry Commission Research Station in Surrey. When driving around the English countryside,
Read full articleCRP Oak Regeneration Study
Oaks ‘n’ Folks – Volume 13, Issue 2 – August, 1998 The federal Conservation Reserve Program (CRP), administered by the Farm Service Agency (FSA) (formerly the Agricultural Stabilization and Conservation Service [ASCS]), was begun in 1985 to conserve and improve
Read full articleExclosure Size Influences Rodent Damage To Blue Oak Seedlings
Oaks ‘n’ Folks – Volume 13, Issue 2 – August, 1998 Studies have demonstrated that a large number of blue oak seedling sexist in the southern Sierra foothill rangeland. However, few persist to the sapling stage (i.e., five to ten
Read full articlePost-Fire Regeneration of Black Walnut
Oaks ‘n’ Folks – Volume 13, Issue 1 – February, 1998 California black walnut is found only in southern California and offers important habitat for many of California’s vertebrate and invertebrate species. Leaf production and flowering occur at approximately the
Read full articleWeed Control Methods for Oak Plantings
Oaks ‘n’ Folks – Volume 13, Issue 1 – February, 1998 One of the main obstacles to establishing oaks artificially is weed competition. Much of the hardwood rangeland in California has a dense understory of introduced Mediterranean annuals. Unfortunately, these
Read full articleDeer Herbivory and Riparian Restoration
Oaks ‘n’ Folks – Volume 13, Issue 1 – February, 1998 Riparian corridors are systems of high biotic, structural, and functional diversity. They serve as critical links between terrestrial and freshwater ecosystems and play an integral role in maintaining healthy
Read full articleGeographical Ecology of Acorn Production by California Oaks
Koenig, Walt and Jean Knops, Oaks ‘n’ Folks – Volume 12, Issue 2 – September, 1997 Intermittent seed production, also known as mast seeding, is a widespread phenomenon among forest trees. One of the defining features of mast seeding is that
Read full articleRestoring Grazed Riparian Areas With Oaks and Willows
Oaks ‘n’ Folks – Volume 11, Issue 2 – September, 1996 Common land management practice in California in the 1960s was the removal of all woody vegetation on hardwood rangelands to promote increased forage production for livestock. This practice was
Read full articlePredation in Restoration and Mitigation
Oaks ‘n’ Folks – Volume 11, Issue 1 – June, 1996 From acorn to tree is a “tough haul” for most oak seedlings.Both survival and growth of blue and valley oaks can be severely limited by uncontrolled competition from annual
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