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Flashcards in Great Lakes Deck (25):
1

What seaway permits the passage of deep water ships between the Great Lakes and the Atlantic Ocean?

St. Lawerence River

2

Name some important Great Lake industries:

Transportation, iron, steel, petroleum, grain, trade

3

About how many species of fish can be found in the Great Lakes?

350 species

4

At 82,000 sq km (31,698 sq mi), what lake has the highest area?

Lake Superior

5

What is the largest fresh water lake completely within the USA?

Lake Michigan

6

Which lake in the Great Lakes does not freeze in the winter?

Lake Ontario

7

What has brought upon deliberate as well as unintentional changes in the Great Lakes?

Invasive species

8

What species contributed to the collapse of native fish populations in the 1950 and 1960?

Sea Lampreys

9

What species have largely replaced the native forage fish?

Alewife and smelt

10

What invertebrate invaders led the dramatic change in the base of the food web supporting the fishery and the physical habitat of the lake bottom and coastal zone?

Zebra mussel

11

What describes the saturation values of a gas?

Decreasing the temperature increases the saturation value

12

What is an unintended consequence of releasing ballast water?

Release of invasive species

13

Intentional introduction of fishes was historically a leading cause of many invasive species. T or F?

True

14

AIS

Aquatic Invasive Species

15

HACCP

Hazard Analysis and Critical Control Point

16

What does the term bioaccumulate mean?

Fish take in chemicals found in the water that remain in there system at concentrations much higher than in the actual water

17

What is Freddy the Fish?

A campaign used to make people aware of how to correctly prepare fish to minimize PCB intake.

18

In 2003 how much money did Great Lake Anglers spend on fishing trips and equipment?

1.3 billion

19

How many pounds of fish does commercial fishing in the great lakes produce each year?

55 million

20

Since when has the diporeia population started to decline?

Mid 1800's

21

USGS

United States Geological Survey

22

What is the value of the Great Lakes recreational fishing?

4 billion

23

Eighty-seven percent of fish producers experience loss from what?

Fish-eating birds

24

BKD

Bacterial Kidney Disease

25

How many state governments are involved in the jurisdiction of the Great Lakes?

8