The oak red scale insect, Kuwania quercus (Kuwana), was described from specimens collected from the bark of oak trees (Quercus species) in Japan. More recently, the species has been identified from California and China, but Californian specimens differ morphologically from Japanese material and are considered here to be a new species based on both morphological and molecular data. In this paper...

Information is lacking on ecosystem effects of understory burning in mesic mixed-oak (Quercus spp.) forests of the southern Appalachians. Native Americans used periodic fires in these forests for driving game and opening the forest. In April 1998, we conducted a lowto moderate-intensity fire in a cove–hardwood forest in the Nantahala National Forest, western North Carolina. In March 1998, befor...

The pace of environmental and socioeconomic change over the past 100 years has been rapid. Changes in fire regimes, climate, and land use have shaped the structure and function of most forest ecosystems, including oak (Quercus spp. L.) forests in the eastern United States. New stressors such as air pollution and invasive species have contributed to and interacted with climate and fire to alter ...

The habitat of the several territories in Ciudad Real (Castilla-La Mancha, Spain) are studued through and mapping (scale 1:10.000) vegetation analysis. distribution surface presents Sites Community Interest (SCIs), as well pressures, threats, trends, state conservation described. These site contributes significantly to maintenance or restoration at a favourable status natural type species commu...

—We examined the structural and spatial distribution of woody biomass in relationship to disturbance in an Indiana old-growth deciduous forest over a 66-yr period. Analysis was done on the core 7.92 ha of a 20.6-ha forest in which every tree 10 cm dbh and over has been tagged and mapped since 1926. Five years are compared—1926, 1976, 1981, 1986 and 1992. Dry weight of living biomass for the 7.9...

In Mediterranean Europe and the United States, oak species (Quercus spp.) have been in various states of decline for past several decades. Several insect pests pathogens contribute to this varying degrees, including Phytophthora cinnamomi, Armillaria spp., defoliators, and, wilt pathogen Bretziella fagacearum. More recently, two emerging canker pathogens, Diplodia corticola D. quercivora, impli...