Download or read book Birch Leaf mining Sawflies in Alberta Hymenoptera Tenthredinidae written by J. A. Drouin and published by Northern Forest Research Centre. This book was released on 1984 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Biological Control Programmes in Canada 2001 2012 written by Peter G Mason and published by CABI. This book was released on 2013-10-21 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Canada is a world leader in biological control research. Reporting the status of biocontrol agents released in Canada over the last decade, this book presents case studies by target pest that evaluate the impact of biocontrol and recommend future priorities. In addition to a new chapter on future targets and an appendix listing established agents, this edition contains information of interest to a global audience, and chapters that address effects of invasive species and climate change.
Download or read book Information Report written by and published by . This book was released on 1985 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Annual Meeting of the Entomological Society of Alberta written by Entomological Society of Alberta and published by . This book was released on 1995 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Digest Des Rapports D information written by and published by . This book was released on 1984 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Insect and Disease Conditions in Canada written by and published by . This book was released on 1980 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tree and Shrub Insects of the Prairie Provinces written by W. G. H. Ives and published by UBC Press. This book was released on 1988 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 600 species of insects and mites that feed on trees and shrubs in the prairie provinces are discussed in terms of their distribution, hosts, importance, life cycle and appearance and damage. There are approximately 1100 colour photographs; the life cycle and damage of major pest species are illustrated, and for less important species, primarily the larval stage is shown. Pests attacking coniferous hosts are separated from those attacking hardwoods, and each group is subdivided according to the kind of feeding damage and type of insect involved. An extensive bibliography is provided. In addition to a taxonomic index listing the order and family of each insect or mite, there is a diagnostic index listing the host species, feeding site of the pest, and species of insect or mite involved and an insect index.
Download or read book Costs and Threats of Invasive Species to Alberta s Natural Resources written by A. S. McClay and published by Alberta Public Affairs Bureau. This book was released on 2004 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review focusses on invasive species affecting forestry, provincial grazing land, aquatic & wetland environments, and natural ecosystems in Alberta. Based largely on examination of the literature, major invasive species are listed under the following categories: terrestrial plants; terrestrial vertebrates; terrestrial invertebrates; aquatic organisms, including fish, plants, insects, mollusks, & protozoan parasites of fish; and plant & wildlife diseases. For each species, information is included on its status, geographic distribution, habitat, and economic & ecological impact. The review also discusses pathways & sources of new introductions and potential threats of new introductions in each species category. The final chapter presents an overall evaluation of invasive species & their impacts, pathways, and future risks. It also notes knowledge gaps.
Download or read book Government of Canada Publications Quarterly Catalogue written by and published by . This book was released on 1979 with total page 1340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Entomology Abstracts written by and published by . This book was released on 1998 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to Federal Scientific and Technical Contributions to Forestry Literature 1901 1971 Keyword index Douglas fir lethal written by Charles R. Stanton and published by . This book was released on 1973 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology Abstracts written by and published by . This book was released on 1999 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Download or read book The Zoological Record written by and published by . This book was released on with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abr g Des Publications written by Canadian Forest Service and published by . This book was released on 1997 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index de Recherche Du Canada Microlog written by and published by . This book was released on 1985 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An index and document delivery service for Canadian report literature".
