Two apparently unlinked events marked the beginning of one of the most devastating forest diseases known to man in recent times: Sudden Oak Death (SOD). In the mid 1990s, while a novel species of Phytophthora was being isolated from mildly diseased Rhododendron and Viburnum plants in German and Belgian nurseries, the first reports of inexplicable death of tanoaks (Notholithocarpus densiflorus) ...

Detailed information about the nesting habitats of birds, including those needed for successful nesting, can provide a better understanding of the ecological factors that permit coexistence of different species and may aid in conservation efforts. From 1989 through 1994, we studied the nesting habitat of secondary cavity-nesting birds in oak woodlands at the San Joaquin Experimental Range, Made...

Adaptive divergence is widely accepted as a contributor to speciation and the maintenance of species integrity. However, mechanisms leading reproductive isolation, genes involved in adaptive divergence, traits that shape adaptation wild changes climate are still largely unknown. In studying role ecological interactions environment-driven selection, trees have emerged potential model organisms b...

Management of ungulates is contested ground that lacks stakeholder agreement on desirable population sizes and management approaches. Unfortunately, we often miss information about extent of local impacts, for example on plant communities, to guide management decisions. Typical vegetation impact assessments like the woody browse index do not assess herbaceous plants, and differences in browse s...

An ensemble modelling approach was performed to predict the distributions of seven sympatric sclerophyllous oak species in Hengduan Mountains Southwest China. Spatial eigenvector filters revealed missing factors addition commonly used environmental variables, thus effectively improved predictive accuracy for montane species. This study identified a richness center oaks, which provides reference...

A recommendation of: Sylvain Schmitt, Thibault Leroy, Myriam Heuertz, Niklas Tysklind Somatic mutation detection: a critical evaluation through simulations and reanalyses in oaks https://doi.org/10.1101/2021.10.11.462798

er's 1716 description of a spontaneous variety cross in Zea Mays. Cotton Mather's is still our earliest authentic description of plant hybridization. In spite of the popular names for the oaks used by Lawson, however, there is little doubt but that he was really describing the actual results of introgression, although he may well have been unaware of the fact. Unfortunately, when we translate S...

Variation of chloroplast DNA and nuclear ribosomal DNA (DNA encoding ribosomal RNA) was studied for five species of white oak native to the eastern United States. Although these species differ in many morphological characters and have different (though overlapping) geographical ranges and ecological tolerances, they are interfertile and often grow in mixed stands, and hybrids are occasionally f...