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Author : A. S. McClay,Alberta Environmental Centre
Publisher : Vegreville, Alta. : Alberta Environmental Centre
Page : 63 pages
File Size : 50,6 Mb
Release : 1995
Category : Insects as biological pest control agents
ISBN : 077321688X
Author : Anonim
Publisher : Unknown
Page : 142 pages
File Size : 54,9 Mb
Release : 2006
Category : Leafy spurge
ISBN : MINN:31951D025261377
Author : Anonim
Publisher : Unknown
Page : 12 pages
File Size : 48,7 Mb
Release : 1989
Category : Euphorbia esula
ISBN : UVA:X001631300
Author : Rachel Winston,Carol Bell Randall
Publisher : Government Printing Office
Page : 338 pages
File Size : 51,9 Mb
Release : 2017-12-13
Category : Gardening
ISBN : 0160942896
This guide focuses on the most problematic weeds in eastern North America for which there are at least some biocontrol agents established and/or available. Multiple photos and descriptions of each weed included in this guide emphasize key identification traits and plant ecology. For each weed included in this guide, all biocontrol agents released or currently found in North America are described individually. Photos highlighting key identification features and damage are included. The release history, current status, and recommended use of each biocontrol agent are described in detail. Recommendations and current impact often vary between the US and Canada, therefore, the information is presented separately. Includes international code of best practices for classical biological control of weeds.
Author : Commonwealth Agricultural Bureaux
Publisher : Farnham Royal, Slough, England : Commonwealth Agricultural Bureaux
Page : 456 pages
File Size : 41,5 Mb
Release : 1984
Category : Gardening
ISBN : MINN:319510002282596
Author : Alan K. Watson
Publisher : Unknown
Page : 116 pages
File Size : 46,9 Mb
Release : 1985
Category : Technology & Engineering
ISBN : WISC:89012819660
Author : Greg Pohl,Gary Anweiler,Christian Schmidt,Norbert Kondla
Publisher : PenSoft Publishers LTD
Page : 556 pages
File Size : 46,8 Mb
Release : 2010-03-05
Category : Science
ISBN : 9789546425348
This checklist of the Lepidoptera (butterflies and moths) of Alberta lists 2367 species reported to occur in the province, as well as 138 species whose occurrence in Alberta is probable. Each species entry includes adult flight time and distribution status in the Cordilleran, Boreal, and Grasslands ecozones, as well as references to taxonomic works and to the literature and public collection sources of the records. Detailed notes on taxonomy, nomenclature, distribution, habitat, and biology are given for 1524 of the listed species. An additional section provides details on 171 species erroneously reported from Alberta in previous works. The authors hope it will be a useful resource for anyone carrying out species-level work on Lepidoptera in western Canada, or taxonomic work on Lepidoptera in general. An introductory section provides a general overview of the order Lepidoptera and the natural regions of Alberta, and the history and current state of knowledge of Alberta Lepidoptera. Each of the 63 families (and selected subfamilies) occurring in Alberta is briefly reviewed, with information on distinguishing features, general appearance, and general biology. The list is accompanied by an appendix of proposed nomenclature changes, consisting of revised status for 25 taxa raised from synonymy to species level, and new synonymy for 20 species-level and one genus-level taxa here considered to be subjective synonyms, with resultant revised synonymy for one taxon and formalization of seven new combinations.
Author : Anonim
Publisher : Unknown
Page : 428 pages
File Size : 51,6 Mb
Release : 2002
Category : Invasive plants
ISBN : MINN:31951D023361862
Author : Scott Cameron Digweed,Northern Forestry Centre (Canada)
Publisher : Northern Forestry Centre
Page : 16 pages
File Size : 51,8 Mb
Release : 2003
Category : Amber-marked birch leaf miner
ISBN : MINN:31951D02467445A
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.
Author : Anonim
Publisher : Unknown
Page : 732 pages
File Size : 45,5 Mb
Release : 2005
Category : Ranching
ISBN : MINN:31951P00848493I
Author : David J. White,Erich Haber,Cathy Keddy,Canadian Wildlife Service,Canadian Museum of Nature
Publisher : The Service
Page : 140 pages
File Size : 43,8 Mb
Release : 1993
Category : Alien plants
ISBN : UOM:39015041377337
Technical report reviews the major and minor invasive wetland and upland plant species in North America, their biology, distribution and control methods, and an evaluation of relevant Provincial and Federal legislation.
Author : Gregory R. Pohl,Robert A. Cannings,Jean-François Landry,David G. Holden,Geoffrey G. E. Scudder
Publisher : Lulu.com
Page : 310 pages
File Size : 51,5 Mb
Release : 2015
Category : Lepidoptera
ISBN : 9781483435190
"Moths and butterflies (Lepidoptera) are one of the most diverse and economically important groups of insects, with approximately 157,000 species worldwide. This book establishes a definitive list of the species that occur in BC, and clarifies erroneous records in past works. It provides a knowledge baseline that will be useful to resource and conservation managers, biodiversity researchers, taxonomists, amateur collectors, and naturalists."--Back cover.
Author : George W. Powell,British Columbia. Ministry of Forests. Research Branch
Publisher : Province of British Columbia, Ministry of Forests
Page : 163 pages
File Size : 40,8 Mb
Release : 1994
Category : Insects as biological pest control agents
ISBN : 0772620954
Insects as biological control agents.
Author : Expert Committee on Weeds (Canada). Western Canada
Publisher : Unknown
Page : 216 pages
File Size : 40,7 Mb
Release : 1989
Category : Weeds
ISBN : UCAL:$C63300
Author : France Royer,Richard Dickinson
Publisher : University of Alberta
Page : 484 pages
File Size : 51,7 Mb
Release : 1999-05
Category : Gardening
ISBN : 1551052210
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