Fire-Induced Mortality of Redberry Juniper [Juniperus pinchotii Sudw.]
نویسندگان
چکیده
منابع مشابه
A comparison of techniques for extracting monoterpenoids from Juniperus (Cupressaceae) species
Concentration and composition of monoterpenoids in plant tissue affects a variety of environmental and ecological issues such as plant defenses, plant classification, and phytotoxicity. Developing the techniques for extracting and estimating the concentration and composition of monoterpenoids must be speciesspecific because monoterpenoid storage location varies between species. Ashe juniper f,J...
متن کاملChemosystematics of Juniperus: Effects of leaf drying on the essential oil composition of Juniperus pinchotii
A bulk collection of terminal branchlets was made from J. pinchotii and subjected to drying at 42oC (24 hrs), then stored for up to 24 mos. at 22oC (room temperature, RT). The oils were distilled and analyzed from fresh, 0.5, 1, 2, 4, 8, 16, and 24 mos. storage at RT. The oil yields showed a slight decline initially, but remained fairly constant. Camphor, camphene hydrate and citronellal declin...
متن کاملSeasonal Variation of Terpenoid Constituents in Natural Populations Ofjuniperus Pinchotii Sudw
Foliage samples were taken from sixteen trees in eight natural populations of Juniper us pinchotii Sudw. in July and again in January to determine if seasonal variations occur in the volatile terpenoids and if the summer or winter collections would be more variable. Gas/liquid chromatographic analysis revealed that significant differences do occur from summer to winter in the relative compositi...
متن کاملChanges in Redberry Juniper Distribution in Northwest Texas (1948 to 1982)
A Redberry juniper is a basal-sprouting, evergreen conifer that occurs in west and northcentral Texas, southwestern Oklahoma, southeastern New Mexico, and northeastern Mexico (Adams and Zanoni 1979). A distribution map, based on a 1948 Soil Conservation Service (SCS) survey of all juniper (cedar) species in Texas was prepared by Allred (1949) (Figure 1 a). A 1982 SCS survey mapped the distribut...
متن کاملNegative effects of temperature and atmospheric depositions on the seed viability of common juniper (Juniperus communis).
BACKGROUND AND AIMS Environmental change is increasingly impacting ecosystems worldwide. However, our knowledge about the interacting effects of various drivers of global change on sexual reproduction of plants, one of their key mechanisms to cope with change, is limited. This study examines populations of poorly regenerating and threatened common juniper (Juniperus communis) to determine the i...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1983
ISSN: 0022-409X
DOI: 10.2307/3898483