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The hypothesis that subarctic hygrophilous plant species show poorly developed mechanisms for water conservation was tested by measuring the stomatal ...

Climate models predict increasing drought intensity and frequency for many regions, which may have negative consequences for tree recruitment, growth ...

Domestic livestock grazing directly alters ground-level habitat but its effects on arboreal habitat are poorly known. Similarly, the response to grazi...

Plant-parasitic nematodes are important pests of agriculture, and transgenic plants with potential for nematode control are currently being developed....

A number of insect vectors of plant-virus diseases make only transitory visits to the crop in which the economic effects of the disease are important....

Disease epidemics typically begin as an outbreak of a relatively small, spatially explicit population of infected individuals (focus), in which diseas...

The incidence of virus yellows diseases (caused by beet yellowing virus [beet yellows closterovirus] and/or beet mild yellowing luteovirus) in sugar b...

Forest mortality related to climate change is an increasingly common global phenomenon. We provide a case study of the U.S. Southwest to investigate t...

Light-demanding trees and thorny shrubs in temperate plant communities may reflect adaptations to now-extinct large grazers, such as aurochs and tarpa...

The loss of foundational but fire-intolerant perennials such as sagebrush due to increases in fire size and frequency in semi-arid regions has motivat...