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Books > Science & Mathematics > Biology, life sciences > Zoology & animal sciences > Invertebrates > Insects (entomology)
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Grasshoppers and Grassland Health - Managing Grasshopper Outbreaks without Risking Environmental Disaster (Hardcover, 2000 ed.)
Loot Price: R4,713
Discovery Miles 47 130
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Grasshoppers and Grassland Health - Managing Grasshopper Outbreaks without Risking Environmental Disaster (Hardcover, 2000 ed.)
Series: NATO Science Partnership Subseries: 2, 73
Expected to ship within 10 - 15 working days
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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.
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