Environmental and Conservation Biology

12 years ago

Although extinction is a natural process, current extinctions are of concern to

Although extinction is a natural process, current extinctions are of concern to environmentalists because

A) the rate of extinction is unusually high.
B) more animals than ever before are going extinct.
C) current extinction is p

ppk 2500 1 Reply

12 years ago

Estimates of current rates of extinction

Estimates of current rates of extinction

A) suggest that rates of extinction have decreased globally.
B) suggest that one-half of all animal and plant species may be gone by the year 2100.
C) indicate that we have reached

ppk 2725 1 Reply

12 years ago

The long-term problem with red-cockaded woodpecker habitat intervention in the s

The long-term problem with red-cockaded woodpecker habitat intervention in the southwest United States is

A) what habitat remains for the red-cockaded woodpecker does not contain trees suitable for nest-cavity construction.
B) the on

ppk 2404 1 Reply

12 years ago

Managing southwestern forests specifically for the red-cockaded woodpecker

Managing southwestern forests specifically for the red-cockaded woodpecker

A) involved strict fire suppression measures.
B) caused other species of songbird to decline.
C) contributed to greater abundance and diversity of other f

ppk 1514 1 Reply

12 years ago

One characteristic that distinguishes a population in an extinction vortex from

One characteristic that distinguishes a population in an extinction vortex from most other populations is that

A) its habitat is fragmented.
B) its effective population size is much lower than its total population size.
C) it is

ppk 1760 1 Reply

12 years ago

Study the information above about quail habitats. Which of these represents the

Study the information above about quail habitats. Which of these represents the best quail habitat in terms of fragmentation and edge?

A) A B) B C) C D) D E) E

ppk 1147 1 Reply

12 years ago

The use of DDT as an insecticide in the United States has been outlawed since 19

The use of DDT as an insecticide in the United States has been outlawed since 1971, yet is still a problem for certain top-level carnivores in the United States. Which of the following choices best explains this apparent incongruity?

A) DD

ppk 1845 1 Reply

12 years ago

What is the biggest problem with selecting a site for a preserve?

What is the biggest problem with selecting a site for a preserve?

A) Only lands that are not useful to human activities are available for preserves.
B) Most of the best sites are inaccessible by land transportation, so making roads to

ppk 1501 1 Reply

12 years ago

What is the biological significance of genetic diversity between populations?

What is the biological significance of genetic diversity between populations?

A) Diseases and parasites are not spread between separated populations.
B) Genes for adaptive traits to local conditions make microevolution possible.

ppk 3130 1 Reply

12 years ago

Which of the following examples poses the greatest potential threat to biodivers

Which of the following examples poses the greatest potential threat to biodiversity?

A) releasing sterilized rainbow trout to boost the sport fishing of a river system that contains native brook trout
B) allowing previously used farm

ppk 2345 1 Reply

12 years ago

Which of the following is true about "hot spots"?

Which of the following is true about "hot spots"?

A) The hot spots that are in most dire need of remediation are located in the tundra.
B) All of the plants and animals containing genes that may be useful to humankind are lo

ppk 2801 2 Replies

irredaweima

12 years ago

Based on what you know about ecosystem stability and the information provided in

Based on what you know about ecosystem stability and the information provided in the graph, which community (A-E) would likely support the most biodiversity?

A) A B) B C) C D) D&n

ppk 1428 2 Replies

ppk

12 years ago

The word triage originated during World War I and was first used by French docto

The word triage originated during World War I and was first used by French doctors in prioritizing patients based on the severity of their wounds, because there were more wounded soldiers in need of urgent care than there were resources to treat them

ppk 1947 1 Reply

12 years ago

Modern conservation biology increasingly aims at

Modern conservation biology increasingly aims at

A) lobbying for strict enforcement of the U.S. Endangered Species Act.
B) sustaining biodiversity of entire ecosystems and communities.
C) saving as much habitat as possible from d

ppk 3366 1 Reply

12 years ago

The primary difference between the small-population approach (S-PA) and the decl

The primary difference between the small-population approach (S-PA) and the declining-population approach (D-PA) to biodiversity recovery is

A) S-PA is interested in bolstering the genetic diversity of a threatened population rather

ppk 3284 1 Reply

12 years ago

How are movement corridors potentially harmful to certain species?

How are movement corridors potentially harmful to certain species?

A) They increase inbreeding.
B) They promote dispersion.
C) They spread disease and parasites.
D) They allow seasonal migration.
E) They increase genet

ppk 2149 1 Reply

12 years ago

Review the formula for effective population size. Imagine a population of 1,000

Review the formula for effective population size. Imagine a population of 1,000 small rodents. Of these, 300 are breeding females, 300 are breeding males, and 400 are nonbreeding juveniles. What is the effective population size?

A)

ppk 3080 1 Reply

Jeffrey

12 years ago

If the sex ratio in a population is significantly different from 50:50, then whi

If the sex ratio in a population is significantly different from 50:50, then which of the following will always be true?

A) The genetic variation in the population will increase over time.
B) The genetic variation in the population wi

ppk 3146 1 Reply

Jeffrey

12 years ago

What is a demographic transition? What are its four stages?

What is a demographic transition? What are its four stages? State why each stage is important and what the consequence is for population growth. Do all countries go through the demographic transition?

Jermain_ 10086 3 Replies

biolove

12 years ago

According to the small-population approach, what would be the best strategy for

According to the small-population approach, what would be the best strategy for saving a population that is in an extinction vortex?

A) introducing individuals from other populations to increase genetic variation
B) determining the m

ppk 1422 1 Reply

Jeffrey

12 years ago

Which of the following conditions is the most likely indicator of a population i

Which of the following conditions is the most likely indicator of a population in an extinction vortex?

A) The species in question is found only in small pockets of its former range.
B) The population is geographically divided

ppk 1686 1 Reply

Jeffrey

12 years ago

Flycatcher birds that migrate from Africa to Europe feed their nestlings a diet

Flycatcher birds that migrate from Africa to Europe feed their nestlings a diet that is almost exclusively moth caterpillars. The graph below shows the mean dates of arrival, bird hatching, and peak caterpillar season for the years 1980 and 2000.

ppk 2946 2 Replies

12 years ago

Assign the Yellowstone National Park (YNP) Ecosystem to one of the following biomes: tropical rain ...

assign the Yellowstone National Park (YNP) Ecosystem to one of the following biomes: tropical rain forest, tropical seasonal forest/savanna, subtropical desert, woodland/shrubland, temperate rain forest, temperate seasonal forest, temperate grassland

emily 1315 4 Replies

emily

12 years ago

Which of the following is a type of research in which a conservation biologist w

Which of the following is a type of research in which a conservation biologist would be involved?

A) studying species diversity and interaction in the Florida Everglades, past and present
B) reestablishing whooping cranes in their for

ppk 2587 1 Reply

12 years ago

According to most conservation biologists, the single greatest threat to global

According to most conservation biologists, the single greatest threat to global biodiversity is

A) stratospheric ozone depletion.
B) global climate change resulting from a variety of human activities.
C) alteration or destruction

ppk 3318 1 Reply

12 years ago

Which of the following groups is most threatened by global extinctions?

Which of the following groups is most threatened by global extinctions?

A) fish B) plants C) amphibians D) birds E) mammals

ppk 1967 1 Reply

12 years ago

Broeal Biome

What is the difference between the boreal biome comparing to all the other biomes? Which biomes comes the closest? Which biomes doesnt have nothing in common with the boreal biome?

emily 986 1 Reply

ppk

12 years ago

What is the main purpose of the wildlife corridor?

What is the main purpose of the wildlife corridor?
A) to slow down the introduction of new individuals of a species
B) to slowly introduce a species to a new preserve
C) to facilitate the transfer of individuals back and forth betwe

ppk 3850 1 Reply

star

12 years ago

The habitat of your bat population (question 34) is designated as a protected ar

The habitat of your bat population (question 34) is designated as a protected area. What, if any, would be an advantage of removing a small number of bats and placing them in a zoo?
A) Removing bats would do too much harm to the original popula

ppk 1111 1 Reply

star

12 years ago

Which of the following is not likely a mechanism for biodiversity increasing pro

Which of the following is not likely a mechanism for biodiversity increasing productivity?
A) Resource use is more efficient.
B) Certain species facilitate the growth of other species.
C) More species means greater biomass.
D)

ppk 1254 1 Reply

lewis

12 years ago

You discover, in your massive 2000-hectare forest, a species of bat that is not

You discover, in your massive 2000-hectare forest, a species of bat that is not found anywhere else. Which of the following agencies would not be involved in helping you formulate a plan to conserve this species?
A) U.S. Forest Service
B)

ppk 1081 1 Reply

lewis

12 years ago

Researchers have been studying a rare population of 87 voles in an isolated area

Researchers have been studying a rare population of 87 voles in an isolated area. Ten voles from a larger population were added to this isolated population. Besides having 10 additional animals, what benefits are there to importing individuals?

ppk 2724 1 Reply

biology101

12 years ago

Which of the following statements regarding species diversity is false?

Which of the following statements regarding species diversity is false?
A) More than 99% of the species known to science are now extinct.
B) As much as 20% of the world's biodiversity will be lost during the next 50 years.
C) T

ppk 2617 1 Reply

mikael

12 years ago

Hypothesis: Productivity increases with species richness because certain species

Hypothesis: Productivity increases with species richness because certain species or functional groups facilitate the growth of other species by providing them with nutrients, partial shade, or other benefits. In looking at the data in Figure 55.4, ho

ppk 2212 1 Reply

12 years ago

Which of the following statements regarding extinction is false?

Which of the following statements regarding extinction is false?
A) Only certain species are immune from extinction.
B) Species are vanishing today faster than at any other time in Earth's history.
C) Extinction occurs whether

ppk 5447 1 Reply

12 years ago

Which of the following criteria have to be met in order for a species to qualify

Which of the following criteria have to be met in order for a species to qualify as invasive?
A) endemic to the area, spreads rapidly, and eliminates foreign species
B) introduced to a new area, spreads rapidly, and eliminates native spec

ppk 2362 1 Reply

12 years ago

Erwin and Scott used an insecticidal fog to knock down insects from the top of a

Erwin and Scott used an insecticidal fog to knock down insects from the top of a L. seemannii tree. The researchers identified over 900 species of beetles among the individuals that fell. Erwin also projected that this entire tree is host to about 60

ppk 2779 1 Reply

12 years ago

While traveling in the Alps, you come across a butterfly that you cannot identif

While traveling in the Alps, you come across a butterfly that you cannot identify. You quickly find out that it is a new species. Which of the following is not a step in understanding the biodiversity of this new species?
A) naming and describi

ppk 952 1 Reply

12 years ago

Interaction web pathway

Does anyone know how to make an interaction web- an interaction web for each food source showing the pathway by which wolves might benefit or impede the growth of other animals and species.
I know that wolves eat elks, bisons and deers. But I d

emily 1821 10 Replies