Download or read book Biological Control of the Ambermarked Birch Leafminer Profenusa Thomsoni Hymenoptera Tenthredinidae in Alberta written by Scott Cameron Digweed and published by Northern Forestry Centre. This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Holarctic ichneumonid parasitoid Lathrolestes luteolator (Gravenhorst) was found attacking Profenusa thomsoni (Konow), an introduced birch-leafmining sawfly, in Edmonton, Alberta. This appears to be a recently evolved host-parasitoid association in Alberta. Populations of L. luteolator increased dramatically relative to those of P. thomsoni as the sawfly declined from epidemic to low levels between 1992 and 1995, after a sustained outbreak beginning with its earliest local detection in the early 1970s. The only previously recorded host of L. luteolator that occurs in Alberta is the tenthredinid Caliroa cerasi L.; however, L. luteolator was not associated with a population of C. cerasi sampled during 1995. Sampling at several locations in Alberta, Saskatchewan, and Ontario showed that L. luteolator is currently associated with populations of P. thomsoni throughout Canada. Further study is required to determine whether L. luteolator is involved in regulating populations of P. thomsoni at the present low levels observed in central Alberta.

Download or read book Forest Insect and Disease Conditions in the United States written by and published by . This book was released on 2004 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Health Conditionsin Alaska 2003 written by and published by DIANE Publishing. This book was released on with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library of Congress Subject Headings written by Library of Congress and published by . This book was released on 2012 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guide to the classical biological control of insect pests in planted and natural forests written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-05-31 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication explains the "why" and "how" of classical biological control in forestry, and addresses the potential risks associated with such programmes. Written by a team of experts, it provides general theory and practical guidelines, featuring 11 case studies of successful implementation efforts worldwide. While insect pests already damage millions of hectares of forest worldwide each year, the extent of such damage is increasing as the impacts of climate change become more evident and as international trade grows, facilitating the pests’ spread. Classical biological control is a well-tried, cost-effective approach to the management of invasive forest pests which involves the importing of "natural enemies" of non-native pests from their countries of origin with the aim of establishing permanent, self-sustaining populations capable of sustainably reducing pest populations below damaging levels.

Download or read book Forest Health Conditions in Alaska 2016 A Forest Health Protection Report written by Garrel Dubois and published by Government Printing Office. This book was released on 2017-04-21 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes monitoring data collected annually by our Forest Health Protection team and some of our key partners. It is intended to provide technical assistance and information to stakeholders on the forest conditions of Alaska. The report also helps to fulfill a congressional mandate (The Cooperative Forestry Assistance Act of 1978, as amended) that requires survey, monitoring, and annual reporting of the health of the forests. This report also provides information used in the annual Forest Insect and Disease Conditions in the United States report. Forestry technicians, conservation specialists, scientists, arborists, tree wardens, natural resource planners, and others involved in forest and wildlife protection would be interested in this report. Students pursuing coursework in natural resources management and forestry may also be interested in this primary source document.

Download or read book Library of Congress Subject Headings written by Library of Congress. Cataloging Policy and Support Office and published by . This book was released on 2009 with total page 1596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Insects of Eastern Forests written by and published by . This book was released on 1985 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Miscellaneous Publication written by and published by . This book was released on 1985 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Issues in Life Sciences Acarology Arachnology and Entomology 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 1191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Life Sciences—Acarology, Arachnology, and Entomology: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Acarology. The editors have built Issues in Life Sciences—Acarology, Arachnology, and Entomology: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Acarology in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Life Sciences—Acarology, Arachnology, and Entomology: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Forest Health Conditions in Alaska 2006 written by John Lundquist and published by . This book was released on 2007 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Health Conditions in Alaska 2007 written by and published by . This book was released on 2008 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Health Conditions in Alaska 2007 A Forest Health Protection Report R10 PR 18 April 2008 written by and published by . This book was released on 2008 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest health conditions in Alaska2006 written by and published by DIANE Publishing. This book was released on with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report NE written by and published by . This book was released on 1980 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 2001 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Health Conditions in Alaska written by and published by . This book was released on 2003 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: