Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 14 pps
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 14 pps
... insects and fungi. An intermedi-
ate decay rate of -0 .06 year
-1
for years 2–5 reflected the slower decay rate for
sapwood and outer bark, and a long-term decay rate of -0 .012 year
-1
was pre-
dicted, ... foliage
-0 .22
-0 .43
-0 .21
49
Elkins and Whitford (1982)
(Quercus harvardii)
Broomsedge
-0 .30
-0 .36
-0 .06
17
J. Williams and Wiegert (1971)
(Andropogo...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 7 ppsx
... (Fig.7.9).Mound den-
sities were significantly highest along dirt roads not covered by forest canopy and
lowest along roads covered by forest canopy. Powerline and graveled or paved
roads not covered by forest ... increasing
corridor width (a) and disturbance frequency (b) at the Savanna River Site in South
Carolina. cl-can = closed canopy, pline = powerline cut, and open, gravel, and paved =...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 8 ppsx
... 1994, see Chapter 13).
Insects are an important food source for a variety of other organisms. Car-
nivorous plants generally are associated with nitrogen-poor habitats and depend
on insects for ... 1989, Krafft and Handel 1991). A
variety of mechanisms for entrapment of insects has evolved among carnivorous
plants, including water-filled pitchers (pitcher plants), triggered changes in turg...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 1 docx
... hierarchical approach offers a means of integrating evolutionary and
ecosystem approaches to studying insect ecology. The evolutionary approach
IV. ECOSYSTEM APPROACH TO INSECT ECOLOGY 11
001-P088772.qxd ... However, an ecosystem
approach provides a framework for integrating insect ecology with the changing
patterns of ecosystem structure and function and for appl...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 2 pdf
... environmental changes, as
described earlier, any change will alter insect abundance and distribution and
may increase the incidence of crop pests and vectors of human and animal dis-
eases (Stapp ... forest canopy and are carried by
wind currents to new areas (Wellington 1980).
The distance traveled by wind- or water-dispersed insects depends on several
factors, including flow rate and inse...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 3 docx
... limited number of resistance mechanisms that confer cross-resistance
to plant defenses and structurally related toxicants and, in some cases, to chemi-
cally unrelated compounds (Soderlund and ... parasites and pathogens in the hemo-
coel (Tanada and Kaya 1993). Behavioral mechanisms also may be used for pro-
tection against pathogens.
Insects produce a variety of antibiotic and anticancer .....
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 4 doc
... rest and can be exposed sud-
denly to startle would-be predators. The margin of the front wings in some sat-
urniids are shaped and colored to resemble the heads of snakes (Fig. 4.11) (Grant
004-P088772.qxd ... allocated as is K), and
85
Sr (assimilated and allocated as is Ca), became use-
ful tools for tracking the assimilation and allocation of nutrients through organ-
isms, food webs, and...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 5 pot
... Following the
appearance of transgenic insect- resistant crop species in the late 1980s, geneti-
cally engineered, Bt toxin-producing corn, cotton, soybeans, and potatoes have
replaced nontransgenic varieties ... labora-
tory experiment with sex-linked mutant genes in Drosophila melanogaster
(Peterson and Merrell 1983), mutant and wild-male phenotypes exhibited about
the same viability, but...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 6 pptx
... exposure to altered temperature and moisture (Seastedt and Cross-
ley 1981a).Anthropogenic disturbances leave straighter and more distinct bound-
aries between disturbed and undisturbed patches (because ... growing population, and preda-
tors and pathogens respond to increased prey or host density and stress. Popu-
lation growth slows and abundance reaches a peak. Competition, predation, and...
Insect Ecology - An Ecosystem Approach 2nd ed - Chapter 10 pot
... particular tolerances to disturbance or postdistur-
bance conditions (see Chapter 2). Often, legacies from the predisturbance com-
munity (such as buried rhizomes, seed banks, woody litter, and animals ... converged toward significantly
greater similarity in structure following fire in a grassland ecosystem than pre-
dicted by a random model. Fukami et al. (2001) modeled compartmentalized
c...
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