Grasshoppers and Grassland Health: Managing Grasshopper Outbreaks without Risking Environmental DisasterJeffrey Lockwood, Alexandre Latchininsky, Michael G. Sergeev Springer Science & Business Media, 30 sept. 2000 - 221 pagini 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. |
Cuprins
Part 1 GRASSHOPPERS AS INTEGRAL ELEMENTS OF | 7 |
BIOMASS gm² | 12 |
20 | 21 |
PERCENT CHANGE | 22 |
2 WHAT ARE THE CONSEQUENCES OF ECOSYSTEM DISRUPTION ON | 31 |
Amu Darya | 41 |
PLATEAU USTYURT | 48 |
3 WHAT IS THE THE ROLE OF GRASSLAND VEGETATION IN | 61 |
SUMMARY | 193 |
Sociopolitical | 214 |
Assess outcome | 215 |
LIST OF CONTRIBUTORS | 217 |
16 IM SOKOLOV | 219 |
SaintGilleslesBains Reunion Island | |
Springer | |
Invited Papers | |
Edmonton | 62 |
Part 2 GRASSHOPPER POPULATION ECOLOGY AND | 71 |
5 CAN MICROPOPULATION MANAGEMENT PROTECT RARE | 89 |
B | 92 |
A | 94 |
6 WHAT FACTORS GOVERN ORTHOPTERAN COMMUNITY STRUCTURE | 97 |
A | 99 |
Part 3 GRASSHOPPER AND LOCUST CONTROL STRATEGIES | 109 |
MT | 111 |
characteristic migratory behaviour ie obligatory flight regardless of | 118 |
Settled locusts | 120 |
A | 122 |
8 WHAT ARE THE CONSEQUENCES OF NONLINEAR ECOLOGICAL | 131 |
9 WHAT TOOLS HAVE POTENTIAL FOR GRASSHOPPER PEST | 145 |
PART 4 GRASSHOPPER CONTROL AND GRASSLAND HEALTH | 157 |
11 CAN LOCUST CONTROL BE COMPATIBLE WITH CONSERVING | 173 |
10 mm | 174 |
12 HOW DOES INSECTICIDAL CONTROL OF GRASSHOPPERS AFFECT | 181 |
dstate | 48 |
HigherOrder Quantification and Proof Search | 60 |
Automatic Composition of Generic Library Functions Standard li | 97 |
A Class of Decidable Parametric Hybrid Systems | 132 |
B | 141 |
a | 180 |
a2 a2 | 193 |
p | 194 |
e | 198 |
CHANGE | 320 |
class JCSystem | 346 |
skip skip P | 374 |
Sets | 401 |
a+g+ | 416 |
Revisiting the Categorical Approach to Systems | 426 |
487 | |
Specification | 496 |
Alte ediții - Afișează-le pe toate
Grasshoppers and Grassland Health: Managing Grasshopper Outbreaks without ... Jeffrey Lockwood,Alexandre Latchininsky,Michael G. Sergeev Nu există previzualizare disponibilă - 2000 |
Termeni și expresii frecvente
abstract acridid action algebra algorithm Amu Darya analysis application Aral Sea areas axioms behaviour bisimilarity bisimulation buffer calculus cardlet CASL chlorpyrifos components Computer Science context crops Darya delta decPart defined Definition denote Dimilin dynamics ecological ecosystem environment environmental equivalence escape analysis example expressions finite fipronil formal formula function grasshopper grasshopper densities grasshopper populations grasslands habitats implementation insect insecticides interface Italian Locust Java JavaCard JCVM Kazakhstan labels language Lemma linear logic LNCS locusts and grasshoppers logic method Migratory Locust minimal solution model checking morphisms MSOS non-target notion object operational semantics order-sorted Orthoptera outbreaks pest management plant predicate probabilistic problem process calculus proof obligations properties recursive redundancy refusal simulation relation result rules signature smartcard specification spi calculus Springer-Verlag strategy structure symbols temporal Theorem transformation treatment variables verification