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Bio-economic analysis of the effects on Great Lakes recreational fishing from new aquatic invaders, A

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Elizabeth L. Malm

Department of Economics & Finance Honors Program Senior Project

Spring 2010

A BIO-ECONOMIC ANALYSIS

OF GREAT LAKES SPORT

FISHING IN INDIANA

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Price ($)

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No formal exchange of a good or service takes

place between a consumer and a producer

No formal market and thus no formal market price

Economic “good” to be studied:

One Great Lakes recreational fishing trip in the

state of Indiana

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How does decreased environmental quality reduce

demand for Great Lakes sport fishing trips in

Indiana?

What potential economic losses could result from

this decreased demand?

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“A plant or animal that is non-native (or alien) to an

ecosystem, and whose introduction is likely to cause

economic, human health, or environmental damage

in that ecosystem.”

-U.S. Environmental Protection Agency

Effects on Great Lakes ecosystem:

 Decrease in stock of native fish populations and extinction of native fish populations, both due to more competition for food and the fat that some invaders are predators

 Harming pelagic food base and increasing water clarity

 Cause of neurological disorders in some fish, making them weaker and more susceptible to predators

 Increased contamination in food chain

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Travel Cost Method

Gives the implicit cost of a fishing trip by calculating

the transportation cost to get from home to

recreation site and back

Serves same function as a market price; tells us how

much someone is willing to give up to obtain the

“good”

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1.Define specific destination site and travel zones

2.Measure/calculate distance from each travel zone to destination site and back

3.Multiply by price of gas in travel zone to obtain round trip transpiration site of traveling to site and back

4.Gather data of quantities of trips taken from each travel zone

5.Compile data on other factors that could affect demand, such as income, substitute sites, and quality of good

6.Run regression to find actual demand function

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(11)

1.Define specific destination site and travel zones

2.Measure/calculate distance from each travel zone to destination site and back

3.Multiply by price of gas in travel zone to obtain round trip transpiration site of traveling to site and back

4.Gather data of quantities of trips taken from each travel zone

5.Compile data on other factors that could affect demand, such as income, substitute sites, and quality of good

6.Run regression to find actual demand function

(12)
(13)

1.Define specific destination site and travel zones

2.Measure/calculate distance from each travel zone to destination site and back

3.Multiply by price of gas in travel zone to obtain round trip transpiration site of traveling to site and back

4.Gather data of quantities of trips taken from each travel zone

5.Compile data on other factors that could affect demand, such as income, substitute sites, and quality of good

6.Run regression to find actual demand function

(14)

1.Define specific destination site and travel zones

2.Measure/calculate distance from each travel zone to destination site and back

3.Multiply by price of gas in travel zone to obtain round trip transpiration site of traveling to site and back

4.Gather data of quantities of trips taken from each travel zone

5.Compile data on other factors that could affect demand, such as income, substitute sites, and quality of good

6.Run regression to find actual demand function

(15)

1.Define specific destination site and travel zones

2.Measure/calculate distance from each travel zone to destination site and back

3.Multiply by price of gas in travel zone to obtain round trip transpiration site of traveling to site and back

4.Gather data of quantities of trips taken from each travel zone

5.Compile data on other factors that could affect demand, such as income, substitute sites, and quality of good

6.Run regression to find actual demand function

(16)

1.Define specific destination site and travel zones

2.Measure/calculate distance from each travel zone to destination site and back

3.Multiply by price of gas in travel zone to obtain round trip transpiration site of traveling to site and back

4.Gather data of quantities of trips taken from each travel zone

5.Compile data on other factors that could affect demand, such as income, substitute sites, and quality of good

6.Run regression to find actual demand function

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 Q = number of sport fishing trips from given county to Indiana’s portion of Lake Michigan

 P = average approximate round trip travel cost of visiting Indian’s portion of Lake Michigan from a given county

 Y = per capita income in given county

 S = approximate surface area of alternative fishing waters in

given county

 F = the existence of the three most popular/most targeted fish species in given county

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RESULTS

Specification Standard Error P Value T Stat R2 log Q = 6.5880 -2.0084 log P Constant 0.8170 2.0084 0.2833 0.000 0.000 8.06 -7.09 50.6% log Q = -8.125 -2.0124 log P + 3.436 log Y Constant 4.869 -2.0125 0.2618 3.436 1.123 0.102 0.000 0.004 -1.67 -7.69 3.06 58.7% log Q = -10.322 -1.9150 log P + 3.844 log Y + 0.07390 log S Constant 5.145 -1.9150 0.2716 3.844 1.163 0.07390 0.05877 0.051 0.000 0.002 0.215 -2.01 -7.05 3.31 1.26 60.0% log Q = -11.652 -1.4688 log P + 3.844 log Y + 0.07539 log S +1.136 F Constant 4.710 -1.4688 0.2833 3.844 1.060 0.07539 0.05359 1.136 0.3510 0.017 0.000 0.001 0.166 0.002 -2.47 -5.18 3.63 1.41 3.24 67.5%

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References

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