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WorksheetsChapter 11 Sustaining Aquatic Biodiversity
Total questions: 40
Worksheet time: 20mins
There are seven species of sea turtles. All are in danger of becoming extinct, mostly due to ____.
female sea turtles not laying large enough clutches of eggs
lower sea levels in the past 100 years
human activities that occurred over 100 years ago
human impacts on their environment taking place during the last 100 years
impacts from giant asteroids
The excessive turbidity, or cloudiness, of Lake Wingra in Madison, Wisconsin, was caused by the introduction of which of the following?
Nile perch
marine seaweed
catfish
water lilies
common carp
Projected climate change threatens aquatic biodiversity and ecosystem services, partly by contributing to ____.
an increase in carbon storage in oceans
spread of tropical diseases
decreased salinity of water
rising sea levels
UV radiation from ozone depletion
Warmer and more acidic ocean water is stressing ____, the foundation of the marine food web.
algae
phytoplankton
cichlids
sea turtles
sharks
A concentration of a particular wild aquatic species suitable for commercial harvesting in a given ocean area or inland body of water is called a ____.
fish farm
fish habitat
fish hatchery
fishery
fish bloom
A fishing method called, ____ fishing, is used to catch surface-dwelling species such as tuna, mackerel, anchovies, and herring, which tend to feed in schools near the surface or in shallow areas.
drift-net
long-line
purse-seine
trawler
rod and reel
Which of the following is defined as the area of ocean needed to sustain the fish consumption of an average person, a nation, or the world?
fishprint
footprint
resource demand
ocean view
ocean resource footprint
When it appears that it is no longer profitable to continue fishing as a result of overfishing, the fish populations are said to be ____.
locally extinct
commercially extinct
economically extinct
biologically extinct
ecologically extinct
One result of the increasingly efficient global hunt for fish is that larger individuals of commercially valuable wild species are ____.
becoming scarce
becoming more prevalent
becoming smaller in size
feeding on new food sources
migrating to new ocean areas
As large species of fish are overfished, the fishing industry is shifting to smaller marine species and about 90% of this catch is converted to fishmeal and fish oil, most of which is ____.
fed to cattle
fed to farmed fish
made into nutrient supplements
used for cooking
discarded
In recent years, jellyfish blooms have ____.
been degraded by commercial fishing
benefited ecotourism
altered ocean current flows
been declining in numbers
been rising in numbers
Which term describes species that play crucial roles in helping to keep their ecosystems functioning?
cornerstone
foundation
keystone
critical
primary
Scientists are now cataloging species in the deepest part of the ocean by using ____.
man driven deep-sea vehicles
remotely operated deep-sea vehicles
global satellite positioning equipment
sonar fish-finding devices
spotter planes
HIPPCO is an acronym that aids in remembering ____.
the names of extinct species
African animals that are threatened with extinction
threats to the world's biodiversity
the names of international treaties dealing with endangered species
the organizations working toward saving threatened species
Sea-bottom habitats are being threatened by ____.
the largest predator fish in the sea
little human activity because they are inaccessible
dredging operations and trawlers
coastal development
shrimp farming
Ocean acidification is defined as rising levels of acid in ocean waters due to the ocean’s absorption of ____ from the atmosphere.
N2O (nitrous oxide)
CaCO3 (calcium carbonate)
H2CO3 (carbonic acid)
CO2 (carbon dioxide)
CO3 (carbonate ions)
One invader that particularly worries scientists and fishers on the east coast of North America is a species of ____ native to the western Pacific Ocean.
phytoplankton
lobster
sea bass
lionfish
cichlids
The first letter "P" in the acronym HIPPCO stands for ____.
perennial
population
pressure
petroleum
pesticides
The greatest marine biodiversity is located ____.
in the sunlit region of the ocean
in the surface region of the ocean
under the polar ice caps
in the open ocean
in coral reefs
In 2011, an international panel of scientists concluded that because of a combination of habitat loss, overfishing, pollution, and ocean acidification, marine life is poised to enter a new period of ____.
conservation
resurgence
mass extinction
mass repopulation
endangerment
What is CITES?
a treaty banning deep-sea exploration
a treaty banning trade in endangered species
a treaty banning barrier island development
a treaty banning overfishing
a treaty banning gill nets
Many scientists and policy makers are suggesting an ecosystem approach to sustain aquatic systems. The cornerstone of this would include establishment of fully protected ____.
marine reserves
benthic zones
high seas zones
continental shelf areas
wildlife reserves
Some coastal fishing communities have developed allotment and enforcement systems for controlling fish catches in which each fisher gets a share of the total allowable catch. These systems help sustain fisheries and jobs and are called ____.
cap and trade system
total allowable catch system
co-management systems
catch-share systems
community-based management system
To encourage more responsible fishing practices, an important component of sustaining aquatic biodiversity and ecosystem services is bottom-up pressure from consumers demanding ____.
sustainable seafood
fishing subsidies
fishing only along coasts
seafood caught by trawlers
seafood raised on fish farms
The traditional approach to estimating fish populations is the ____.
potential sustained yield
minimum sustained yield
commercial sustained yield
maximum sustained yield
optimum sustained yield
The newer approach to estimating fish populations, one which takes into account interactions between species and has more room for error, is ____.
maximum sustained yield
minimum sustained yield
commercial sustained yield
potential sustained yield
optimum sustained yield
The purpose of mitigation banking is to ____.
encourage sustainable fishing practices
trade wetlands for forest lands
allow for development of wetland for a fee
require the restoration of all wetlands
allow the destruction of wetlands if an equal wetland is created elsewhere
What species is one of the biggest threats to the Great Lakes?
sea lamprey
cod
jellyfish
wild salmon
cutthroat trout
The Columbia River dam system has benefited many people, but it has ____.
sharply increased populations of invasive salmon
sharply reduced populations of wild salmon
sharply reduced populations of herring
inhibited migration patterns of trout
inhibited reproductive cycles of common carp
In 1968, the U.S. Congress passed the ____ to establish protection of rivers with outstanding wildlife, geological, scenic, recreational, historical, or cultural values.
National Rivers and Wetlands Act
National Rivers of Interest Act
National Wild and Scenic Rivers Act
Federal Freshwater Act
Federal Scenic Waterways Act
Which activity is least likely to be involved with the sustainable management of freshwater fisheries?
supporting populations of commercial and sport fish species
facilitating the introduction of commercially important nonnative species
preventing over fishing
building and stocking reservoirs and farm ponds
controlling predators and parasites
What is a major threat to the biodiversity and ecological function of the Great Lakes?
invasive nonnative species
ocean sea level rise
saltwater intrusion
acidification
tourism
What is not one of the ecosystem services of rivers?
deliver nutrient to seas to help sustain fisheries
purify water
renew and renourish wetlands
remove silt that accumulates in deltas
provide habitats for wildlife
Biologist E. O. Wilson proposed a list of priorities for protecting aquatic biodiversity. What is one of those priorities?
Decrease government subsidies for commercial fishing.
Identify and preserve the world's aquatic biodiversity hot spots.
Stop the melting of the arctic ice.
Stop ocean and freshwater acidification.
Find ways to move people living in or near aquatic ecosystems elsewhere.
The Comprehensive Everglades Restoration Plan has several goals. Which goal below is not one of them?
Restore the curving flow of the Kissimmee River.
Build a series of massive dams to stop water leaving the Everglades.
Remove 400 kilometers of canals and levees south of Lake Okeechobee.
Buy 240 square kilometers of farmland and allow it to become marsh.
Create 18 large reservoirs and underground storage areas.
Protecting ____ and restoring them in areas where they have been destroyed are important ways to reduce the impacts of rising sea levels and storm surges, because these can slow storm-driven waves.
coral reefs
mangrove forests
estuaries
tidal basins
algal blooms
Sea turtles spend most of their lives traveling throughout the world’s oceans, but adult females almost always return to the beaches where they were born to lay their eggs.
True
False
Rising sea levels from projected climate change luckily will not disrupt sea turtles because they are aquatic species.
True
False
We have limited knowledge about marine biodiversity and its many functions.
True
False
A number of new species, called bioinvaders, are being introduced to aquatic ecosystems, which increases biodiversity and benefits these systems.
True
False
