Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California
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Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California
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Author : Michael L. Morrison
language : en
Publisher:
Release Date : 1989
Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California written by Michael L. Morrison and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Avian ecology categories.
Seasonal differences in use of food and habitat have been shown for numerous bird species. Especially during winter, when insect food is often at its lowest availability, birds may be unable to secure enough food for survival. In earlier work in the mixed-conifer zone of the western Sierra Nevada (Blodgett Forest, El Dorado County), observers found that many birds significantly increased their relative use of incense-cedar (Calocedrus decurrens [Torr.] Florin.) for foraging in winter as compared to summer. Preliminary examination of cedar showed the presence of one predominant arthropod species: the incense-cedar scale (Xylococculus rnacrocarpae Coleman). Scales were abundant under the loose, flaky bark of small (
Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California
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Author :
language : en
Publisher:
Release Date : 1989
Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California
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Author :
language : en
Publisher:
Release Date : 1989
Bird Foraging On Incense Cedar And Incense Cedar Scale During Winter In California written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Avian ecology categories.
Seed Dissemination In Small Clearcuttings In North Central California
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Author : Philip M. McDonald
language : en
Publisher:
Release Date : 1980
Seed Dissemination In Small Clearcuttings In North Central California written by Philip M. McDonald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Clearcutting categories.
In a 1964-1967 study on the Challenge Experimental Forest, seedfall was evaluated in 2-, 5-, and 10-acre circular clearcuttings. During the 4 years, 10 seed crops, ranging from light to bumper, were produced by ponderosa pine. white fir, Douglas-fir, and incense cedar. Seedfall ranged from 76 to 40,691 sound seed per acre (188 to 100,547/ha) for a single species in a given year. From 89 to 100 percent of each species' seed fell within an area 1 1/2 times the height of the average dominant tree. Overall, seed distribution was highly variable.
Bibliography Of Agriculture
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Author :
language : en
Publisher:
Release Date : 1990
Bibliography Of Agriculture written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Agriculture categories.
Monthly Catalogue United States Public Documents
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Author :
language : en
Publisher:
Release Date : 1993-03
Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-03 with Government publications categories.
Monthly Catalog Of United States Government Publications
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1993
Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Government publications categories.
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
California Fish And Game
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Author :
language : en
Publisher:
Release Date : 1992
California Fish And Game written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Fisheries categories.
Journal Of The Royal Society Of Western Australia
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Author : Royal Society of Western Australia
language : en
Publisher:
Release Date : 2001
Journal Of The Royal Society Of Western Australia written by Royal Society of Western Australia and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Natural history categories.
Current Advances In Ecological Environmental Sciences
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Author :
language : en
Publisher:
Release Date : 1990-07
Current Advances In Ecological Environmental Sciences written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-07 with Ecology categories.