A Guide to Australian Grasshoppers and Locusts PDF Download
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Author: David C. Rentz Publisher: ISBN: Category : Nature Languages : en Pages : 440
Book Description
Provides an aid to the identification of both adult and nymph stages of Australian grasshoppers, using nothing more than a 10x hand lens. Technical terminolgy is kept to minimum, as easy-to-understand diagrams illustrate the morphological structures necessary for identification.
Author: David C. Rentz Publisher: ISBN: Category : Nature Languages : en Pages : 440
Book Description
Provides an aid to the identification of both adult and nymph stages of Australian grasshoppers, using nothing more than a 10x hand lens. Technical terminolgy is kept to minimum, as easy-to-understand diagrams illustrate the morphological structures necessary for identification.
Author: Laura Ingalls Wilder Publisher: Zondervan ISBN: 0060885408 Category : Juvenile Fiction Languages : en Pages : 388
Book Description
Laura and her family move to Minnesota where they live in a dugout until a new house is built and face misfortunes caused by flood, blizzard, and grasshoppers.
Author: Boris Petrovich Uvarov Publisher: Nri ISBN: Category : Science Languages : en Pages : 632
Book Description
Volume 2 only available of this major hardback book, covering behaviour, ecology, biogeography and population dynamics of locusts and grasshoppers worldwide.
Author: Jeffrey A. Lockwood Publisher: Springer Science & Business Media ISBN: 9401143374 Category : Science Languages : en Pages : 236
Book Description
Acridids (grasshoppers and locusts) can range from being rare curiosities to abundant menaces. Some are threatened with extinction and become subjects of intensive conservation efforts, while others are devastating pests and become the objects of massive control programmes. Even within a species, there are times when the animal is so abundant that its crushed masses cause the wheels of trains to skid (the Rocky Mountain grasshopper, Melanoplus spretus Walsh in western North America in the 1860s and I 870s), while at other times the animal is alarmingly scarce (the Rocky Mountain grasshopper went extinct in the early 1900s). Why are there these extremes in one insect family, and even in a single species? The NATO workshop examined this paradox and its implications for Environmental Security, which must address both the elements of land use (agricultural production and pest management) and conservation of biodiversity. The reconciliation of these objectives clearly demands a critical assessment of current knowledge and policies, identification of future research, and close working relationships among scientists. Insects can present two clear faces, as well as the intervening gradation. These extremes require us to respond in two ways: conservation of scarce species and suppression of abundant (harmful) species. But perhaps most important, these opposite poles also provide the opportunity for an exchange of information and insight.
Author: Stephan Krall Publisher: Springer Science & Business Media ISBN: 9783764354428 Category : Technology & Engineering Languages : en Pages : 560
Book Description
In the late eighties large-scale control operations were carried out to control a major desert locust upsurge in Africa. For the first time since the banning of organochlorine pesticides these operations relied mainly on non-persistent pesticides such as organophosphates and pyrethroids. The amount of pesticides sprayed and the area covered were probably the highest in the history of locust control and raised criticism with respect to efficacy, economic viability and environmental impact. As a consequence, applied research into the problem was intensified, both at the national and the international level, with the goal of finding new and environmentally sound approaches and solutions to locust and grasshopper control. Emphasis was laid on developing new control agents and techniques.
Author: David C. Rentz
Author: David C. Rentz
Author: Laura Ingalls Wilder
Author: Charles Valentine Riley
Author: Boris Petrovich Uvarov
Author: Boris Petrovich Uvarov
Author: John C. Wise
Author: Harvey Charles Severin
Author: Grigoriĭ I͡Akovlevich Beĭ-Bienko
Author: Jeffrey A. Lockwood
Author: Stephan Krall