little arbor vitae lake...season (1.3 hours). however, walleye anglers expended less effort to...

WISCONSIN DEPARTMENT OF NATURAL RESOURCES CREEL SURVEY REPORT

LITTLE ARBOR VITAE LAKE VILAS COUNTY

2007-08

Treaty Fisheries Publication

Written by Steve Kramer Treaty Fisheries Technician

Wisconsin DNR Woodruff, Wisconsin

CONTENTS INTRODUCTION ................................................................................................................. 1 GENERAL LAKE INFORMATION .................................................................................... 2 Location ........................................................................................................................... 2 Physical Characteristics ................................................................................................... 2 Seasons Surveyed ............................................................................................................ 2 Weather ............................................................................................................................ 2 Sportfishing Regulations.................................................................................................. 2 SPECIES CATCH AND HARVEST INFORMATION ....................................................... 2 CREEL SURVEY RESULTS AND DISCUSSION ............................................................. 3 Survey Logistics .............................................................................................................. 3 General Angler Information............................................................................................. 3 SPECIES INFORMATION................................................................................................... 3-4 ACKNOWLEDGMENTS ..................................................................................................... 5 SUMMARY TABLES Table 1. Sportfishing effort summary.................................................................................... 6 Table 2. Creel survey synopsis .............................................................................................. 7 SPECIES CATCH AND HARVEST INFORMATION Gamefish Figure 1. Walleye............................................................................................................. 8 Figure 2. Northern Pike ................................................................................................... 9 Figure 3. Muskellunge ..................................................................................................... 10 Figure 4. Smallmouth Bass .............................................................................................. 11 Figure 5. Largemouth Bass .............................................................................................. 12 Panfish Figure 6. Yellow Perch .................................................................................................... 13 Figure 7. Bluegill ............................................................................................................. 14 Figure 8. Pumpkinseed..................................................................................................... 15 Figure 9. Rock Bass ......................................................................................................... 16 Figure 10. Black Crappie ................................................................................................. 17 Cover Art: Steve Hilt, Minocqua, WI Fish Graphics: Virgil Beck, Stevens Point, WI

INTRODUCTION .......................................................................................................................................................1

GENERAL LAKE INFORMATION ........................................................................................................................2

Location.................................................................................................................................................................2 Physical Characteristics........................................................................................................................................2 Seasons Surveyed...................................................................................................................................................2 Weather..................................................................................................................................................................2 Harvest Regulations ..............................................................................................................................................2

SPECIES CATCH AND HARVEST INFORMATION .........................................................................................................................................................3

CREEL RESULTS AND DISCUSSION ...................................................................................................................3

Survey Logistics.....................................................................................................................................................3 General Angler Information ..................................................................................................................................3 SPECIES INFORMATION ....................................................................................................................................3 Walleye ..................................................................................................................................................................3 Northern Pike ........................................................................................................................................................3 Muskellunge...........................................................................................................................................................3 Smallmouth Bass ...................................................................................................................................................3 Largemouth Bass ...................................................................................................................................................3 Panfish...................................................................................................................................................................3

ACKNOWLEDGEMENTS .........................................................................................................................................4

1

INTRODUCTION Fish populations can fluctuate due to natural forces (weather, predation, competition), management actions (stocking, regulations, habitat improvement), inappropriate development (habitat degradation), and harvest impacts. Wisconsin Department of Natural Resources fisheries crews regularly conduct fishery surveys on area lakes and reservoirs to gather the information needed to monitor changes, identify concerns, evaluate past management actions, and to prescribe good fishery management strategies. Netting and electrofishing surveys are used to gather data on the status of fish populations and communities (species composition, population size, reproductive success, size/age distribution, and growth rates). But the other key component of the fishery that we often need to measure is the harvest. On many lakes in the Ceded Territory of northern Wisconsin, harvest of fish is divided between sport anglers and the six Chippewa tribes who harvest fish under rights granted by federal treaties. The tribes harvest fish mostly using a highly efficient method, spearing, during a relatively short time period in the spring. Every fish in the spear harvest is counted – a complete “census” of the harvest. We also measure the sport harvest to assess its impact on the fishery. But because it would be highly impractical and very costly to conduct a complete census of every angler who fishes on a lake, we conduct creel surveys. A creel survey is an assessment tool used to sample the fishing activities of anglers on a body of water and make projections of harvest and other fishery parameters. Creel survey clerks work on randomly-selected

days and shifts, forty hours per week during the open season for gamefish from the first Saturday in May through the first Sunday in March, except during the month of November when fishing effort is low and ice conditions are often unsafe. The survey is run during daylight hours, and shift times change from month to month as day length changes. Creel survey clerks travel their lakes using a boat or snowmobile to count numbers of anglers on a lake at predetermined times, and to interview anglers who have completed their fishing trip to collect data on what species they fished for, catch, harvest, lengths of fish harvested, marks (finclips or tags), and hours of fishing effort. Collecting completed-trip data provides the most accurate assessment of angling activities, and it avoids the need to disturb anglers while they are fishing. A computer program is used to make projections of total catch and harvest of each species, catch and harvest rates, and total fishing effort, by month and for the year in total. Keep in mind that these are only projections based on the best information available, and not a complete accounting of effort, catch, and harvest. Accurate projections require that we sample a sufficient and representative portion of the angling activity on a lake. The accuracy of creel survey results, therefore, depends on good cooperation and truthful responses by anglers when a creel clerk interviews them. You may have encountered a DNR creel survey clerk on a recent fishing trip. We appreciate your cooperation during an interview. The survey only takes a moment of your time and it gives the Department valuable information needed for management of the fishery.

1

This report provides estimates of: 1. Overall fishing pressure 2. Fishing effort directed at each species 3. Catch and harvest rates 4. Numbers of fish caught and harvested. Also included are general information about the lake, discussion of results of the survey, and detailed summaries, by species, of fishing effort, catch and harvest.

GENERAL LAKE INFORMATION

Location Little Arbor Vitae Lake is located in the town of Arbor Vitae in Vilas County. Physical Characteristics Little Arbor Vitae Lake covers 534 acres, has a maximum depth of 32 feet, and 5.8 miles of shoreline. It is a highly fertile drainage lake. Bottom substrate is fifty- percent sand, forty- percent muck, five- percent gravel, and five-percent rock. Aquatic vegetation is abundant. Pondweed beds are abundant, as is coontail and milfoil beds. Rushes and lily pads are present in back bays. Little Arbor Vitae lake develops a heavy algae bloom in the summer, greatly reducing light penetration in the lake. Forty five percent of the shoreline is State owned. Seasons Surveyed The creel survey started on opening day (May 5th) of the 2007 gamefishing season and ran through March 2, 2008. The only

portion of the gamefishing season not covered by the survey was November 1 to December 1, due to unsafe ice conditions. Weather Spring weather conditions were normal. Ice cleared the lake around April 16. The summer was warm and dry. Harvest Regulations The following seasons, daily bag limits, and length limits were in place on Little Arbor Vitae Lake during the 2007-08 gamefish season. Bag Minimum Little Arbor

Vitae Lake Species Season Limit Size Largemouth Bass & 5/5-6/15 catch and release Smallmouth Bass 6/16-3/02 5 of each 14 inch minimum

Muskellunge 5/26-11/30 1 34 inches Northern Pike 5/5-3/2 5 none Walleye 5 /5-3/2 3* no

minimum, one > 14”

Panfish year round 25 none

* The statewide bag limit was 5 fish,

but due to tribal declarations it was reduced on this lake.

SPECIES CATCH AND HARVEST INFORMATION Angling information is summarized for each species caught or fished for (Figures 2-10). Each species page has up to five graphs depicting the following: 1. ESTIMATED FISHING EFFORT Total calculated number of hours

during each month that anglers spent fishing for a species.

2. ESTIMATED CATCH AND

HARVEST RATES Calculated number of hours it takes

2

an angler to catch or harvest a fish of the indicated species. Only information from anglers who were specifically targeting that species is reported.

3. ESTIMATED CATCH AND

HARVEST Calculated number of fish of the

indicated species caught or harvested by all anglers regardless of their intended target.

4. LENGTH DISTRIBUTION OF

HARVESTED FISH All fish of a species that were

measured by the creel clerk during the entire survey season.

5. LARGEST AND AVERAGE

LENGTH OF FISH HARVESTED Largest and average length of

harvested fish of the indicated species measured by the creel each month.

CREEL RESULTS AND DISCUSSION Survey Logistics There were no unusual problems associated with the survey. The department also conducted a creel survey of Little Arbor Vitae Lake in 1996. General Angler Information Anglers spent 25,233 hours or 47 hours/acre fishing Little Arbor Vitae Lake within the standard daylight survey period during the 2007 gamefishing season (Table 1). That was higher than the statewide average of 33.6 hours per acre and the Vilas County average of 36.2 hours per acre. Fishing activity during the 2007 fishing season peaked in June (5,137 hours) and was lowest

in December (724 hours). SPECIES INFORMATION Walleye (Table 2, Figure 1) Walleye were the primary target of anglers who fished Little Arbor Vitae Lake during the 2007 gamefishing season. Anglers directed 15,925 hours of effort at walleye within the standard daylight survey period during the 2007 season. That is very similar to the amount of effort directed at walleye during the 1996 season (16,642). Anglers caught 3,412 and harvested 2,333 walleye from Little Arbor Vitae Lake during the 2007 season. The catch dropped considerably from 13,002 in the 1996 survey to 3,412 in the 2007 survey. Harvest, however, increased by 53% from 1,082 in 1996 to 2,333 fish harvested in 2007. Walleye anglers spent more time, on average, to catch a walleye during the 2007 season (4.7 hours) than during the 1996 season (1.3 hours). However, walleye anglers expended less effort to harvest a walleye from Little Arbor Vitae Lake in 2007 (6.8 hours) than in 1996 (15.3 hours). The estimated number of adult walleye in Little Arbor Vitae Lake in 2007 (4,247) was almost identical to the 1996 population (4240 fish). Walleye fishing effort on Little Arbor Vitae Lake during the 2007 season peaked in May (3,598 hours). Catch (1,477) peaked in May, and harvest (905) of walleye was highest in May. The average length of walleye harvested dropped from 16.2 inches in 1996 to 13.6 in the 2007 survey. The largest harvested walleye measured by the creel clerk was a 26.8-inch fish caught in May. These changes in walleye harvest, catch and mean length are a direct result of the

3

different regulations in effect on Little Arbor Vitae Lake during each survey year. Northern Pike (Table 2, Figure 2) Little Arbor Vitae Lake northern pike numbers seem to be on the rise. Anglers devoted 762 hours of effort pursuing northern pike during the 2007 compared to 0 hours during the 1996 season. Total catch and harvest for 2007 were 484 and 221 respectively compared to 0 for both in 1996. The largest northern pike measured was 33.1 inches. Muskellunge (Table 2, Figure 3) Approximately 15 percent of directed effort was focused on muskellunge during the 2007 season compared to 33 percent in the 1996 survey. Total catch of muskellunge decreased from 1,132 in 1996 to 220 in 2007. Catch was highest in July (57). The clerk measured three muskellunge, the largest being a 36.3-inch fish. 2007 spring sampling showed an above average population (0.53/acre) of muskellunge in the lake, the largest musky measured was a 45.7-inch female. Smallmouth Bass (Table 2, Figure 4) The Smallmouth bass population seems to be increasing in Little Arbor Vitae Lake. Although less than five percent of directed effort was focused on smallmouth bass, total catch of smallmouth bass increased from 4 fish 1996 to 1,861 in 2007. Largemouth Bass (Table 2,Figure 5) Just less than three percent of directed effort

was focused on largemouth bass. Total catch increased from 46 fish in 1996 to 814 in the 2007 survey. Yellow Perch (Table 2, Figure 6) Yellow perch were the primary target for panfish anglers focusing 5,344 hours of directed effort during the 2007 season. It took anglers an average of 30 minutes to catch and 1.1 hours to harvest a yellow perch during the 2007 season. An estimated 5,132 yellow perch were harvested from Little Arbor Vitae Lake in 2007, up considerably from the 1,737 fish kept in 1996. The greatest monthly catch of yellow perch during the 2007 season occurred in June (2,980 fish). The number of yellow perch caught in 2007 (13,937) was three times more than the 1996 catch of 4,384 fish. The average length of yellow perch measured by the clerk was 8.1 inches in 2007. Bluegill (Table 2, Figure 7) Three percent of directed effort was focused on bluegill. Anglers caught 1,523 and harvested 548 during the 2007 season. The average length of bluegill measured was 6.7 inches. Black Crappie (Table 2, Figure 10) 2007 black crappie directed effort has increased two fold from the 1996 creel survey, indicating a substantial increase in the black crappie population. Total catch and harvest increased to 9,248 caught and 7,274 kept in 2007 from 526 caught and 259 kept in 1996. The average length of black crappie measured was 9.5 inches.

4

5

Panfish (Table 2, Figure 8 & 9) Other species of panfish taken in small numbers during the 2007 survey include rock bass and pumpkinseed. ACKNOWLEDGEMENTS John Logan was the survey clerk on the lake from May through October, and Bob Consolo from December through March. We also thank all the anglers who took the time to offer information about their fishing trip to the survey clerk. Without your cooperation this survey would not have been possible. This creel survey report was reviewed by Mike Coshun, Steve Gilbert and Dennis Scholl of the Wisconsin Department of Natural Resources, Woodruff, WI. Additional copies of this report and those covering other local lakes can be obtained from the Woodruff DNR. Requests should be directed to: Mike Coshun Treaty Fisheries Biologist Wisconsin Department. of Natural Resources 8770 Hwy J Woodruff, Wi. 54568 (715-358-9209) [email protected]

Table 1. Sportfishing effort summary, Little Arbor Vitae Lake, 2007-08 season.

MonthTotal Angler

HoursTotal Angler Hours/Acre

Vilas County Average

Hours/Acre

Statewide Average

Hours/AcreMay 4334 8.1 5.4 5.8June 5137 9.6 7.1 6.1July 4501 8.4 7.7 6.4August 2731 5.1 6.7 5.4September 2787 5.2 4.2 3.8October 2207 4.1 2.0 1.6December 724 1.4 0.5 1.7January 784 1.5 0.7 1.5February 1671 3.1 0.9 1.3March 357 0.7 0.1 ***Summer Total 21697 40.6 34.1 29.1*Winter Total 3536 6.6 2.1 4.5Grand Total 25233 47.3 36.2 33.6

*"Summer" is May-October; "Winter" is December-March**Too few lakes have been surveyed in March to give a meaningful statewide average.

Statewide Average Hours/Acre is the average angler effort in hours per acre for inland lakes in the state surveyed between 1990 and 1995. This value can be used to compare Little Arbor Vitae Lake to other lakes statewide.

Total Angler Hours is the estimated total number of hours that anglers spent fishing on Little Arbor Vitae Lake during each month surveyed.

Total Angler Hours/Acre is the total angler hours divided by the area of the lake in acres. This is useful if you wish to compare effort on Little Arbor Vitae Lake to other lakes.

County Average Hours/Acre is the average angler effort in hours per acre for county lakes that have been surveyed since 1990. This value can be useful in comparisons as well.

6

Table 2. Comparison of creel survey synopses, Little Arbor Vitae Lake, 1999-97 and 2007-08 fishing seasons.

CREEL YEAR: 2007-08

SPECIES

DIRECTEDEFFORT(Hours)

PERCENTOF TOTAL

TOTALCATCH

SPECIFICCATCHRATE

(Hrs/Fish) *TOTAL

HARVEST

SPECIFICHARVEST

RATE(Hrs/Fish) **

MEANLENGTH OFHARVESTED

FISHWalleye 15925 44.42% 3412 4.7 2333 6.8 13.6Northern Pike 762 2.13% 484 5.6 221 8.9 25.1Muskellunge 5337 14.89% 220 40.2 13 659.6 35.6Smallmouth Bass 1655 4.62% 1861 2.3 54 42.0 15.4Largemouth Bass 997 2.78% 814 3.0 10 96.2 17.2Yellow Perch 5344 14.91% 13937 0.5 5132 1.1 8.1Bluegill 1100 3.07% 1523 1.4 548 2.6 6.7Pumpkinseed 23 0.06% 99 0.5 4 7.2Rock Bass 291 0.81% 2082 1.2 316 2.5 7.4Black Crappie 4413 12.31% 9248 0.5 7274 0.6 9.5 * A blank cell in this column indicates that no fish of a given species were caught by anglers who specifically targeted that species.** A blank cell in this column indicates that no fish of a given species were harvested by anglers who specifically targeted that species. 7

CREEL YEAR: 1996

SPECIES

DIRECTEDEFFORT(Hours)

PERCENTOF TOTAL

TOTALCATCH

SPECIFICCATCHRATE

(Hrs/Fish)TOTAL

HARVEST

SPECIFICHARVEST

RATE(Hrs/Fish)

MEANLENGTH OFHARVESTED

FISHWalleye 16642 43.39% 13002 1.3 1082 15.3 16.2Northern Pike 0 0.00% 0 0.0 0 0.0 0.0Muskellunge 12992 33.88% 1132 12.2 31 417.0 38.1Smallmouth Bass 71 0.19% 4 1.6 0 0.0 0.0Largemouth Bass 456 1.19% 46 16.9 8 0.0 0.0Bluegill 1467 3.83% 1017 1.5 728 2.1 6.7Pumpkinseed 0 0.00% 10 0.0 0 0.0 0.0Black Crappie 1834 4.78% 526 3.6 259 7.4 11.0Yellow Perch 4861 12.67% 4384 1.3 1737 3.2 8.3Rock Bass 29 0.08% 408 0.9 27 0.0 7.0extra 0 0.00% 0 0

8

PROJECTED SPECIFIC CATCH AND HARVEST RATES

6.07.5

8.3

6.0

3.4

8.6

11.7

0.0 0.0

9.0 9.3

11.3

7.8

4.6

11.7 11.7

0.0 0.0

2.44.0

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.MONTH

HO

UR

S PE

R F

ISH

CATCH HARVEST

PROJECTED CATCH AND HARVEST

507410

239 309386

58 26 0 0

336 334173 239 280

40 26 0 0

1477

905

0200400600800

1000120014001600


NU

MB

ER O

F FI

SH

CATCH HARVEST

LENGTH DISTRIBUTION OF FISH MEASURED BY THE CREEL CLERK

18 14 13 8 5 3 2 2 1

2029

54

155

187

86

1511

020406080

100120140160180200

7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30INCHES

NU

MB

ER O

F FI

SH

LARGEST AND AVERAGE LENGTH OFFISH HARVESTED

13.5 13.5 13.7 14.3 14.7 14.615.8 15.3

20.0 20.5

18.0

22.2

25.3

18.4

23.2

19.0

13.1

26.8

7

12

17

22

27

32


INC

HES

AVERAGE LARGEST

PROJECTED FISHING EFFORT

3029 3036

1943 1854

1295

465305 338

62

3598

0

500

1000

1500

2000

2500

3000

3500

4000


AN

GLI

NG

HO

UR

S

WALLEYE

Figure 1. Walleye sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

9


5.8

0.0

9.4

4.53.0

0.0 0.0 0.0 0.0

11.5

0.0

23.5

6.0

3.0

0.0 0.0 0.0 0.02.4 3.5

0.0

5.0

10.0

15.0

20.0

25.0


HO

UR

S PE

R F

ISH

CATCH HARVEST


64

1635

5439

11 3

35

013

015

27 16 11 022

0

227

117

0

50

100

150

200

250


NU

MB

ER O

F FI

SH

CATCH HARVEST


4

1

9

5

8

12

4

7

43

12

11

0

2

4

6

8

10

12

14

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

INCHES

NU

MB

ER O

F FI

SH


26.127.6

25.5 25.5

28.9

25.6

22.5

29.027.6

31.430.1 31.0

28.5

23.024.7

33.1

10

15

20

25

30

35


INC

HES

AVERAGE LARGEST


153

67

234

141

2818 18

0

103

0

50

100

150

200

250


AN

GLI

NG

HO

UR

S

NORTHERN PIKE

Figure 2. Northern pike sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

10


40.2 39.7 39.5 29.9

73.0

0.0 0.0 0.0 0.0

196.1

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

33.2

0.00.0

50.0

100.0

150.0

200.0

250.0


HO

UR

S PE

R F

ISH

CATCH HARVEST

PROJECTED CATCH AND HARVEST54

57

19

38

17

0 0

13

0

85

0 0 0 0 0 0 0

22

00

10

20

30

40

50

60


NU

MB

ER O

F FI

SH

CATCH HARVEST


1 1 1

0

0.2

0.4

0.6

0.8

1

1.2

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50INCHES

NU

MB

ER O

F FI

SH


36.1

34.7

36.3

34.7

3233333434353536363737


INC

HES

AVERAGE LARGEST


1595

908756

913 896

269

0200400600800

10001200140016001800

MAY JUN. JUL. AUG. SEP. OCT.MONTH

AN

GLI

NG

HO

UR

S

MUSKELLUNGE

Figure 2. Northern pike sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

11


3.82.3 1.7

7.7

2.10.0 0.0 0.0 0.00.0

31.6

21.9

0.0 0.0 0.0 0.0 0.0 0.01.0 0.00.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

MAY JUN. JUL. AUG. SEP. OCT. DEC. JAN. FEB. MAR.

MONTH

HO

UR

S PE

R F

ISH

CATCH HARVEST


451

516

446

128

520 0 0 00

31 23 0 0 0 0 0 0

268

00

100

200

300

400

500

600


MONTH

NU

MB

ER O

F FI

SH

CATCH HARVEST


2

4

1

5

0

1

2

3

4

5

6

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25INCHES

NU

MB

ER O

F FI

SH


14.816.316.6 17.1

5

7

9

11

13

15

17

19


INC

HES

AVERAGE LARGEST


309

617

435

174

88

0 0 0 032

0

100

200

300

400

500

600

700


AN

GLI

NG

HO

UR

S

SMALLMOUTH BASS

Figure 4. Smallmouth bass sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

12


2.7 3.62.1

4.5 4.5

0.0 0.0 0.0 0.0

26.2

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0 0.00.0

5.0

10.0

15.0

20.0

25.0

30.0


HO

UR

S PE

R F

ISH

CATCH HARVEST


214

180

143

70

30

0 0 0 010 0 0 0 0 0 0 0 0

177

00

50

100

150

200

250


NU

MB

ER O

F FI

SH

CATCH HARVEST


11

0

0.2

0.4

0.6

0.8

1

1.2

10 11 12 13 14 15 16 17 18 19 20INCHES

NU

MB

ER O

F FI

SH


17.218.1

10111213141516171819


INC

HES

AVERAGE LARGEST


271308

220

10285

0 0 0 011

0

50

100

150

200

250

300

350


AN

GLI

NG

HO

UR

S

LARGEMOUTH BASS

Figure 5. Largemouth bass sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

13


0.5 0.4

1.4 1.5

0.3 0.2 0.3

1.4

0.1

1.10.9

3.3

4.0

0.5 0.7 0.7

2.0

0.81.1

1.4

0.00.51.01.52.02.53.03.54.04.5


HO

UR

S PE

R F

ISH

CATCH HARVEST


29802721

611

261

1145

15121241

771

1833

1117972

165 66

617373

510 494305

862

513

0

500

1000

1500

2000

2500

3000

3500


NU

MB

ER O

F FI

SH

CATCH HARVEST


238

26

72

160158

47

8

020406080

100120140160180

3 4 5 6 7 8 9 10 11 12 13 14INCHES

NU

MB

ER O

F FI

SH


7.77.2

7.6 7.98.5

7.3

8.67.9 7.7

11.2

10.010.7

10.0 10.1

8.7

10.010.5

9.08.9

13.0

56789

1011121314


INC

HES

AVERAGE LARGEST


1073

771

538

217324

256363

949

253

600

0

200

400

600

800

1000

1200


AN

GLI

NG

HO

UR

S

YELLOW PERCH

Figure 6. Yellow perch sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

14


1.00.5

4.8

0.8

3.7

0.00.5

1.7

0.0

4.1

1.4

4.8

2.3

0.0 0.0

2.7

1.7

0.0

1.9

3.0

0.0

1.0

2.0

3.0

4.0

5.0

6.0


HO

UR

S PE

R F

ISH

CATCH HARVEST


245

366

280

177

12 0

48

133

11

64 79 7353

0 0 12

129

0

251

138

050

100150200250300350400


NU

MB

ER O

F FI

SH

CATCH HARVEST


9

20

23

13

0

5

10

15

20

25

3 4 5 6 7 8 9 10INCHES

NU

MB

ER O

F FI

SH


6.8

5.7

6.46.6

7.9

6.4

8.5

6.6

8.1 8.28.0

7.07.0

8.5

566778899


INC

HES

AVERAGE LARGEST


142

45

143120

14 024

216

396

050

100150200250300350400450


MONTH

AN

GLI

NG

HO

UR

S

BLUEGILL

Figure 7. Bluegill sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

15

PROJECTED SPECIFIC CATCH AND HARVEST RATES0.5

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00.0 0.00.00.00.10.10.20.20.30.30.40.40.50.5


HO

UR

S PE

R F

ISH

CATCH HARVEST


49

0 0

23

14

0 0 0 00 0 04

0 0 0 0 0

13

00

10

20

30

40

50

60


NU

MB

ER O

F FI

SH

CATCH HARVEST


1

0

0.2

0.4

0.6

0.8

1

1.2

3 4 5 6 7 8 9 10INCHES

NU

MB

ER O

F FI

SH


7.2 7.2

5

6

6

7

7

8


INC

HES

AVERAGE LARGEST

PROJECTED FISHING EFFORT23

0 0 0 0 0 0 0 000

5

10

15

20

25


AN

GLI

NG

HO

UR

S

PUMPKINSEED

Figure 8. Pumpkinseed sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

16


0.90.0

6.88.2

0.0 0.0 0.0 0.0 0.0

3.0

0.0

6.8

16.3

0.0 0.0 0.0 0.0 0.00.6 1.1

0.02.04.06.08.0

10.012.014.016.018.0


HO

UR

S PE

R F

ISH

CATCH HARVEST


555

237273

383

145

0 0

91

038 46

13 4 4 0 0

91

0

398

120

0

100

200

300

400

500

600


NU

MB

ER O

F FI

SH

CATCH HARVEST


3

6

8

10

2

0

2

4

6

8

10

12

3 4 5 6 7 8 9 10 11 12INCHES

NU

MB

ER O

F FI

SH


6.5

5.7

7.1

7.8

8.2

7.8

6.0

7.1

7.9

9.0

7.9

9.0

566778899

10


INC

HES

AVERAGE LARGEST


44

0

92

61

0 0 0 0 0

94

0102030405060708090

100


MONTH

AN

GLI

NG

HO

UR

S

ROCK BASS

Figure 9. Rock bass sportfishing effort, catch, harvest, and length distribution, Little Arbor Vitae Lake, during 2007-08.

17


1.1 1.4 1.80.8

7.3

1.40.2 0.2 0.3

1.7 1.8

4.2

1.4

10.9

1.40.3 0.2 0.4

1.82.8

0.0

2.0

4.0

6.0

8.0

10.0

12.0


MONTH

HO

UR

S PE

R F

ISH

CATCH HARVEST


315 460206

623

30 111

2611

3810

315181 31187

3184 111

1851

3662

278

767471

0500

10001500200025003000350040004500


NU

MB

ER O

F FI

SH

CATCH HARVEST


8

424140

130

85

22185

0

20

40

60

80

100

120

140

3 4 5 6 7 8 9 10 11 12 13 14INCHES

NU

MB

ER O

F FI

SH


7.8 7.4 7.78.6

10.39.3 9.1 9.3 8.9

9.8 9.5

11.0

13.0

10.5

12.2

10.5

12.5

9.8

11.1

13.5

56789

1011121314


INC

HES

AVERAGE LARGEST


295

534

319395

41153

523

772

101

1280

0200400600800

100012001400


AN

GLI

NG

HO

UR

S

BLACK CRAPPIE

Figure 10. Black crappie sportfishing effort, catch, harvest, and length distribution, Little Arbor VitaeLake, during 2007-08.

little arbor vitae lake...season (1.3 hours). however, walleye anglers expended less effort to...

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