Bionomics ofNeodiprionspecies on white fir in northeastern California
نویسندگان
چکیده
منابع مشابه
Abundances of Small Mammals in Fir Forests in Northeastern California
We compared abundances of seven species of forest rodents among three types of fir (Abies concolor and A. magnifica) forest: unlogged old-growth, unlogged mature, and shelterwood-logged old-growth. Small mammals were livetrapped during summers 1991 and 1992 in four grids within each type of forest; grids were located in the Lassen National Forest in northeastern California. Shelterwood-logged f...
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To determine the impact of fertilization and thinning on growth and development of red fir (Abies magnifica A. Murr.) stands, we established an experiment in a 60-year-old stand using a 2 × 3 factorial design with nitrogen-fertilized and nonfertilized treatments and three stocking levels. Plots were established in 1976 and were measured every 5 years for 26 years. The periodic annual increment ...
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The distribution of Culiseta particeps (Adams) in California appears to be restricted in Califor-nia to the Pacific coastal areas and scattered patches in the Riverside and San Bernardino counties (Darsie and Ward 1981). However, Iit-tle information exists on the adult ecology and abundance of this species. Larvae have been found in marshes, margins of streams, residual pools in stream beds and...
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Logistic regression equations predicting the probability that a tree will die from natural causes-insects, diseases, intertree competition-within 10 years have been developed for California red fir (Abies magnifica) and white fir (A. concolor). The equations, like those with a 5-year prediction period already developed for these species, are based on analysis of crown and bole characteristics o...
متن کاملDifferential Susceptibility of White Fir Provenances to the Fir Engraver and Its Fungal Symbiont in Northern California
The fir engraver, Scolyfus venrralis LeC., attacks white fir, Abies condor (Gord. and Glend.) Lindl., and other true firs, Abies spp., in western North America. The biology, attack behavior, and ecology of this bark beetle were recently summarized by Berryman and Ferrell(1988). During the summer flight season, the attacking beetles bore into the cambial zone of fir boles, introducing a pathogen...
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ژورنال
عنوان ژورنال: Hilgardia
سال: 1985
ISSN: 0073-2230
DOI: 10.3733/hilg.v53n08p024