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environmental science a - unit 6: recreation and the environment

Terms in this set (41)

lesson 26
ecotourism
which statement best defines ecotourism?
tourism that is meant to conserve the natural environment by preserving natural resources, educating visitors, and sustaining local communities by boosting the economy
which options are distinct positive effects, or pros, of ecotourism? select all that apply.
sustainable income for locals
education about conservation
ecotourism can have positive effects, or pros, on the environment. It can also leave behind negative effects, or cons. some effects can be both good and bad for different reasons.

match each effect with the appropriate descriptor.
education of locals and visitors : pro

human-animal interaction : con

trail roads for human access : pro and con
in african wildlife parks, safaris are a popular way for humans to experience the park, see animals, and travel from one place to another. people take several vehicles around the savanna, tracking wildlife to take photographs and view the animals from afar. people may camp in the bush or go back to a local hotel. rangers leading them know how to find the animals and navigate the wilderness with ease.

what might be some negative effects of this kind of ecotourism? select all that apply.
pollution
degradation of habitat
noise from vehicles and people
lesson 27
hunting & fishing
what happens to a population that is overhunted?
a severe decline in the population
how are parts of the environment negatively affected by hunting? select all that apply.
diversity can be disrupted when animals are killed for certain characteristics.

migration patterns can be changed, and animals may stop going to certain areas.

predator/prey relationships are altered if a predator population declines and the prey population increases.
what are examples of how overfishing affects the environment? select all that apply.
dredging flattens the ocean floor and destroys corals.

abandoned fishing equipment pollutes the ocean floor.
what are some sustainable fishing policies? select all that apply.
size limits
catch-and-release
match each policy with the correct explanation of how it helps contribute to sustainable fishing.
fish is caught one at a time, which helps limit mass catching of profitable fish like big tuna. : hook-and-line fishing

fish must be sent back alive into the water, which helps limit the number of fish that are kept but not used. : catch-and-release

the fish that can be harvested are restricted, which allows fish to be able to reproduce. : size limits
how can ecotourism be used to support further conservation efforts? select all that apply.
financial gains can be used to reinvest in habitat restoration.

locals and visitors can be educated on the importance of the environment.
what helps increase the diversity of aquatic species and protects fish reproduction?
catch-and-release fishing and fishing seasons
what are examples of how hunting has negatively affected the environment? select all that apply.
the intentional overhunting of the tasmanian tiger led to its extinction.

the hunting policies have changed the behaviors of the adult male scandinavian brown bears.
what are some effects of dragging the ocean with nets?
destroying shelters, removing aquatic plants, and ruining breeding and nursery sites
some areas still struggle with protecting habitats even with ecotourism in place.

what are some environmental problems that occur despite ecotourism? select all that apply.
poaching
illegal logging
what happens during overhunting?
the number of individuals hunted in a species is high enough to cause a population decline.
hiking can be a form of ecotourism.

how can hiking potentially have negative impacts on the environment? select all that apply.
litter left behind
degradation of trails
noise disturbing the animals
in order to educate the public about endangered species and threatened places, information must be distributed to a wide variety and high volume of people. this may lead to people investing in the preservation of the habitat and organisms.

what is the most likely potential downside of educating many people about a threatened habitat?
visitation to the area may increase, further endangering and disturbing the area.
which factors define ecotourism? select all that apply.
educating visitors
preserving natural resources
sustaining the local economy
lesson 28
recreational watercraft
match the water-based recreational activity to its effect on marine ecosystems.
disturbs sediments on the marine floor, which then blocks sunlight needed for photosynthesis : turbulence

reduces the amount of oxygen in the water that fish need to survive : carbon monoxide pollution

leads to shoreline erosion, which adversely affects the habitats of some organisms : large wake

makes the water ph more acidic, which affects survival of some fish : carbon dioxide pollution
what recreational activities are likely to adversely affect marine ecosystems? select all that apply.
using jet skis
traveling in a speedboat
what are some positive effects of the use of small personal watercraft on a marine environment? select all that apply.
loss of habitat due to destruction of coral

damage or death to marine organisms

reduced ability of a species to maintain its population
over the course of a summer, two boys used a small boat ally daily to go diving in shallow waters away from a beach shoreline. each time, they stopped in the same spot, dropping anchor in the coral reefs below the boat. by the end of the summer, they noticed a decrease in the amount of fish they saw during their divers.

which is the most likely explanation for their observations?
the boat and anchor might have destroyed or damaged the coral reefs, which is the habitat of some fish
lesson 29
conservation
what is an effect of habitat restoration on the environment?
species may return to locations that were once damaged
what are ways that humans affect the environment while doing recreational activities? select all that apply.
humans leave trash that animals may try to eat

humans going off the trial can cause damage to the environment
which explains the need to rehabilitate nature trails? select all that apply.
increased sediments

nature trails being overused
why is it important for nature trails used by atvs to be rehabilitated? select all that apply.
the habitable area for plants and animales increases

vegetation can be lost due to erosion if nature trails are not rehabilitated
what activities done near an ocean beach are likely to negatively affect aquatic life?
boating and using jet skis
what are risks posed to a marine ecosystem when use of personal watercraft causes the loss of a keystone species such as the terrapin? select all that apply.
the biodiversity of the ecosystem would change and eventually decrease.

organisms that feed on the keystone species may also become lost to the ecosystem.

the population of organisms that are preyed upon by the keystone species would increase beyond the ability of the ecosystem to sustain it.
what explains why small boats might adversely affect the population of manatees? select all that apply.
manatees and small boats are both likely to be in shallow water, which increases risk of collision.

manatees have a low reproduction rate, so any damage from small boats can have a huge effect on their numbers.
why would the use of personal watercraft adversely affect wildlife?
its speed in shared spaces can lead to a collision.
what are ways to reduce the impact of recreational boats on wildlife? select all that apply.
setting low speed limits in shared spaces
mandating that boats use propeller guards
having "no-wake" and other protected zones
which phrases explain the need for nature trail rehabilitation? select all that apply.
0.25 of 1

increased biodiversity
nature conservancy demand

(i dont know sry)
why do nature trails need rehabilitation?
to reduce the production of sediments
what effect do species preservation efforts have upon the environment?
they protect and improve the genetic diversity of the species.
what is the effect of atv use on national forests? select all that apply.
increased runoff
increased access to remote locations
what is the effect of habitat restoration?
reduction in habitat loss
good luck on your exam :)
xx greetings
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