نتایج جستجو برای: oaks

تعداد نتایج: 1703  

Journal: :Forests 2021

Genetic diversity is a critical resource for species’ survival during times of environmental change. Conserving and sustainably managing genetic requires understanding the distribution amount (in situ ex situ) across multiple species. This paper focuses on three emblematic IUCN Red List threatened oaks (Quercus, Fagaceae), highly speciose tree genus that contains numerous rare species poses cha...

Journal: :Journal of Systematics and Evolution 2021

Unlike the well-understood cold limit of trees, causes dry trailing edge trees await explanation. Here we aimed at explaining drought an evergreen oak species (Quercus pannosa s.l.) in a typical valley upper Yangtze region, SE Himalaya, where rains (ca. 250 mm/a) are largely confined to monsoon season (July–August) with during remaining 9–10 months. We capitalized on unintentional year-round ir...

Journal: :Journal of the Linnean Society of London, Botany 1869

Journal: :Annales des Sciences Forestières 1993

Journal: :Forest Ecology and Management 2002

2004
Michael A. Steele Peter Smallwood William B. Terzaghi John E. Carlson Thomas Contreras Amy McEuen

INTRODUCTION Although oaks dominate many forest ecosystems worldwide (Barnes and others 1998), several aspects of oak ecology remain poorly understood including oak regeneration and masting (McShea and Healy 2001). Animals that eat and disperse acorns, such as squirrels, mice, and jays may play a pivotal role in oak forest dynamics (Jones and others 1998, Ostfeld and others 1996), influencing r...

2016
Elizabeth Carter

The hydrocarbon isoprene plays an important role in atmospheric chemistry, particularly in regards to air pollution and climate change. It is important to know why certain plant species emit isoprene and what factors affect its production in order to predict future air quality. Past research has indicated that isoprene aids in coping with heat stress, so it was hypothesized that source latitude...

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