Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbor... more Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbors (representing 56% of launched boats). Data were collected using the Interview Form (Figure 2) and the Instantaneous Count Form (Figure 3). The use of these forms, as modified slightly for 1986, is discussed in detail in Appendix 1. Major expenses included expenditures for boats, motors, or trailers. During summer 1985, minor expenses included rods, reels, downriggers, lines, lures, bait, licenses, boat rental, launching fees, boat gas and oil, boat maintenance, automobile gas, and lodging, food, alcohol, and clothing for the trip. Other expenditures included anything not defined as minor or major expenditures. Because anglers almost never reported other expenditures, no estimates were made of daily or seasonal total expenditures in this category. For each primary site, the sampling unit was the calendar day, with estimates of effort, catch, and expenditures formed for each randomly selected day. Dates were randomly selected in a stratified design. Strata were defined by first dividing the total sampling period into sub-intervals of about 1 month each and then forming weekday and weekend (including holidays) strata within each time interval. Time intervals were identified with abbreviated names of months, although they did not correspond exactly to calendar months. The intervals were: apr= 1 April-12 May (6 weeks) may= 13 May-9 June (4 weeks) jun = 10 June-7 July (4 weeks) jul = 8 July-4 August (4 weeks) aug = 5 August-1 September (4 weeks) sep = 2 September-29 September (4 weeks) oct = 30 September-27 October (4 weeks) Record the total number of trailers of all types, but only count empty trailers (those without boats on them).
Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed... more Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed weekly in 17 patients on a methadone maintenance program. There were very large differences between patients in the plasma level established at a given dosage, implying large differences in the rate of methadone metabolism. Despite virtually constant daily dosage, the plasma methadone levels fluctuated greatly from week to week and from day to day in individual patients. With rate exceptions there was no relationship between plasma methadone level and symptom complaints or between weekly chamges in plasma methadone level and changes in symptom complaints. Except possible to identify the ocassional patient with unusually low plasam methadone levels, the determination of methadone levels is not likely to be or practical value in methadone programs.
Julian's Reef was surveyed by side-scan sonar and remotely operated video during August, 1990. 10... more Julian's Reef was surveyed by side-scan sonar and remotely operated video during August, 1990. 1086 egg traps and 932 egg nets were then deployed in ten gangs over areas of the reef judged, on the basis of the initial side-scan sonar and video results, to offer the best lake trout spawning habitat. Inspection of egg-collection devices immediately after deployment showed that 98% of the traps and 92% of the nets were fishing (i.e., capable of catching eggs). ROV inspection of some gangs in November showed that 90% of the traps and 46% of the nets were still fishing. 520 egg traps and 621 egg nets were recovered intact during December. No lake trout eggs were found. A substrate map of the southern half of Julian's reef was prepared based on the side-scan sonar and video data. The substrate type offering the best shelter for lake trout eggs (described as bedrock and rubble) constituted 8.55% of the area surveyed. Within that substrate type less than 15% of the substrate provided physical structure described by others as suitable habitat for lake trout eggs and fry. Despite the effort to place egg-collection devices over good substrate, most missed those small areas of superior substrate. With the large numbers of egg-collection devices and the substrate map available from this study, future egg-collection attempts targeting the best spawning substrate on Julian's Reef can be made at low cost.
Side effects of levomethadone and racemic methadone in a maintenance program Sixty-six patients p... more Side effects of levomethadone and racemic methadone in a maintenance program Sixty-six patients participated in a double-blind, crossover study comparing side effects, drug use, clinic attendance, and dose changes on levomethadone and d,l (racemic) methadone. The hypothesis under examination was that dextromethadone, while adding no narcotic actions to the racemate, was contributing to side effects. An earlier single-blind pilot study showed that 9 out of II side effects improved while patients were receiving levomethadone, but this larger study did not duplicate those results. Analysis of 25 variables showed no significant differences between levo-and racemic methadone.
This study was planned and executed through the efforts of participants in the Lake Michigan Litt... more This study was planned and executed through the efforts of participants in the Lake Michigan Littoral Fisheries Research Group. Yellow perch used in this study were collected by Mike Coshun
List of Tables and Figures Tables 1 Reporting rates of tagged yellow perch by anglers in the Illi... more List of Tables and Figures Tables 1 Reporting rates of tagged yellow perch by anglers in the Illinois waters of Lake Michigan estimated from recapture rates observed during our creel survey. 15 2 Estimated reporting rates of tagged fish by commercial fishermen in the Illinois waters of Lake Michigan. 16 3. Summary of adult yellow perch collected and tagged in southwestern Lake Michigan, 1986-1993 18 4. Summary of recaptured fish by site, season, sex, year, and source of tag return. 5 Percentage of fish tagged in a given season and recaptured in a successive season 6 CPE of larval yellow perch collected off Waukegan, Lake Michigan, 1990-1923. 7 Summary of fish used for age and growth 8 Age distribution of yellow perch by summarized by sex and year of capture. 9a. Population abundance estimates using the Lincoln index (Southwood 1978) 9b Population abundance estimates using the Jolly-Seber method (Southwood 1978) 9c Estimated survival (-Z) of yellow perch in three years in Lake Michigan 10 Catches per unit effort of adult yellow perch in Lake Michigan in each year of the study, summarized by season, gear type, and sampling site. 11 Length at age of male yellow perch collected off Milwaukee and/or Waukegan in four separate studies 8 Larval yellow perch catches in 1988-1992 9 Mean length of spring sampled male yellow perch by year class O1a-c Year class frequency of yellow perch collected in gill nets from 1986 to 1988. 50 lOd-f Year class frequency of yellow perch collected in fyke nets from 1989 to 1990. 51 1Og-h Year class frequency of yellow perch collected in fyke nets from 1991 to 1992. 52 11 Year class frequency of yellow perch from 1992 compared with CPE of young-of year perch trawled in 1987-1990. 53
Transactions of the American Fisheries Society, 1993
Distribution, Abundance, and Resting Microhabitat of Burbot on Julian's Reef, Southwestern L... more Distribution, Abundance, and Resting Microhabitat of Burbot on Julian's Reef, Southwestern Lake Michigan. THOMAS A EDSALL, GREGORY W KENNEDY, WILLIAM H HORNS Transactions of the American Fisheries Society ...
Patients in a methadone maintenance clinic were randomly assigned to two groups: one to have urin... more Patients in a methadone maintenance clinic were randomly assigned to two groups: one to have urine tests on-site (by the EMIT system) with immediate feedback of results to patients and staff; the other to have urine specimens sent away to an offsite laboratory for testing by thin-layer chromatography. Although other advantages might justify the adoption of on-site testing in methadone programs, the method appeared to have little or no therapeutic advantage over customary off-site testing. There were negligibly small differences between the groups with respect to illicit drug use.
Commercial fishing in Illinois waters of Lake Michigan was monitored from July 1989 through June ... more Commercial fishing in Illinois waters of Lake Michigan was monitored from July 1989 through June 1991. Biologists accompanied commercial fisherman on 104 fishing trips and observed the lifting of 141 miles of net. Estimated total incidental catches (including fishing for yellow perch and bloater chubs) during the first year of the study were 713 chinook salmon, 3288 lake trout, and 189 brown trout. During the second year the estimated catches were 404 chinook salmon, 2900 lake trout, and 298 brown trout. Of the catch of chinook salmon 80% occurred during fall (September 1 through November 14) on trips when yellow perch was the target species. Only 4% of the chinook salmon were in excellent condition when captured. Nets were often set and lifted on the same day during fall of both years. Daily catch rates in nets set for yellow perch during fall were 0.41 when the nets were set and lifted on the same day and 4.96 when nets were set and lifted on different days. Lake trout was the only salmonid species caught in significant numbers during fishing for bloater chubs. Estimated catches of lake trout during bloater chub fishing were 2100 in the first year of the study and 2363 in the second year. One-third of observed lake trout were in excellent condition when captured.
Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbor... more Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbors (representing 56% of launched boats). Data were collected using the Interview Form (Figure 2) and the Instantaneous Count Form (Figure 3). The use of these forms, as modified slightly for 1986, is discussed in detail in Appendix 1. Major expenses included expenditures for boats, motors, or trailers. During summer 1985, minor expenses included rods, reels, downriggers, lines, lures, bait, licenses, boat rental, launching fees, boat gas and oil, boat maintenance, automobile gas, and lodging, food, alcohol, and clothing for the trip. Other expenditures included anything not defined as minor or major expenditures. Because anglers almost never reported other expenditures, no estimates were made of daily or seasonal total expenditures in this category. For each primary site, the sampling unit was the calendar day, with estimates of effort, catch, and expenditures formed for each randomly selected day. Dates were randomly selected in a stratified design. Strata were defined by first dividing the total sampling period into sub-intervals of about 1 month each and then forming weekday and weekend (including holidays) strata within each time interval. Time intervals were identified with abbreviated names of months, although they did not correspond exactly to calendar months. The intervals were: apr= 1 April-12 May (6 weeks) may= 13 May-9 June (4 weeks) jun = 10 June-7 July (4 weeks) jul = 8 July-4 August (4 weeks) aug = 5 August-1 September (4 weeks) sep = 2 September-29 September (4 weeks) oct = 30 September-27 October (4 weeks) Record the total number of trailers of all types, but only count empty trailers (those without boats on them).
Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed... more Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed weekly in 17 patients on a methadone maintenance program. There were very large differences between patients in the plasma level established at a given dosage, implying large differences in the rate of methadone metabolism. Despite virtually constant daily dosage, the plasma methadone levels fluctuated greatly from week to week and from day to day in individual patients. With rate exceptions there was no relationship between plasma methadone level and symptom complaints or between weekly chamges in plasma methadone level and changes in symptom complaints. Except possible to identify the ocassional patient with unusually low plasam methadone levels, the determination of methadone levels is not likely to be or practical value in methadone programs.
Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbor... more Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbors (representing 56% of launched boats). Data were collected using the Interview Form (Figure 2) and the Instantaneous Count Form (Figure 3). The use of these forms, as modified slightly for 1986, is discussed in detail in Appendix 1. Major expenses included expenditures for boats, motors, or trailers. During summer 1985, minor expenses included rods, reels, downriggers, lines, lures, bait, licenses, boat rental, launching fees, boat gas and oil, boat maintenance, automobile gas, and lodging, food, alcohol, and clothing for the trip. Other expenditures included anything not defined as minor or major expenditures. Because anglers almost never reported other expenditures, no estimates were made of daily or seasonal total expenditures in this category. For each primary site, the sampling unit was the calendar day, with estimates of effort, catch, and expenditures formed for each randomly selected day. Dates were randomly selected in a stratified design. Strata were defined by first dividing the total sampling period into sub-intervals of about 1 month each and then forming weekday and weekend (including holidays) strata within each time interval. Time intervals were identified with abbreviated names of months, although they did not correspond exactly to calendar months. The intervals were: apr= 1 April-12 May (6 weeks) may= 13 May-9 June (4 weeks) jun = 10 June-7 July (4 weeks) jul = 8 July-4 August (4 weeks) aug = 5 August-1 September (4 weeks) sep = 2 September-29 September (4 weeks) oct = 30 September-27 October (4 weeks) Record the total number of trailers of all types, but only count empty trailers (those without boats on them).
Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed... more Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed weekly in 17 patients on a methadone maintenance program. There were very large differences between patients in the plasma level established at a given dosage, implying large differences in the rate of methadone metabolism. Despite virtually constant daily dosage, the plasma methadone levels fluctuated greatly from week to week and from day to day in individual patients. With rate exceptions there was no relationship between plasma methadone level and symptom complaints or between weekly chamges in plasma methadone level and changes in symptom complaints. Except possible to identify the ocassional patient with unusually low plasam methadone levels, the determination of methadone levels is not likely to be or practical value in methadone programs.
Julian's Reef was surveyed by side-scan sonar and remotely operated video during August, 1990. 10... more Julian's Reef was surveyed by side-scan sonar and remotely operated video during August, 1990. 1086 egg traps and 932 egg nets were then deployed in ten gangs over areas of the reef judged, on the basis of the initial side-scan sonar and video results, to offer the best lake trout spawning habitat. Inspection of egg-collection devices immediately after deployment showed that 98% of the traps and 92% of the nets were fishing (i.e., capable of catching eggs). ROV inspection of some gangs in November showed that 90% of the traps and 46% of the nets were still fishing. 520 egg traps and 621 egg nets were recovered intact during December. No lake trout eggs were found. A substrate map of the southern half of Julian's reef was prepared based on the side-scan sonar and video data. The substrate type offering the best shelter for lake trout eggs (described as bedrock and rubble) constituted 8.55% of the area surveyed. Within that substrate type less than 15% of the substrate provided physical structure described by others as suitable habitat for lake trout eggs and fry. Despite the effort to place egg-collection devices over good substrate, most missed those small areas of superior substrate. With the large numbers of egg-collection devices and the substrate map available from this study, future egg-collection attempts targeting the best spawning substrate on Julian's Reef can be made at low cost.
Side effects of levomethadone and racemic methadone in a maintenance program Sixty-six patients p... more Side effects of levomethadone and racemic methadone in a maintenance program Sixty-six patients participated in a double-blind, crossover study comparing side effects, drug use, clinic attendance, and dose changes on levomethadone and d,l (racemic) methadone. The hypothesis under examination was that dextromethadone, while adding no narcotic actions to the racemate, was contributing to side effects. An earlier single-blind pilot study showed that 9 out of II side effects improved while patients were receiving levomethadone, but this larger study did not duplicate those results. Analysis of 25 variables showed no significant differences between levo-and racemic methadone.
This study was planned and executed through the efforts of participants in the Lake Michigan Litt... more This study was planned and executed through the efforts of participants in the Lake Michigan Littoral Fisheries Research Group. Yellow perch used in this study were collected by Mike Coshun
List of Tables and Figures Tables 1 Reporting rates of tagged yellow perch by anglers in the Illi... more List of Tables and Figures Tables 1 Reporting rates of tagged yellow perch by anglers in the Illinois waters of Lake Michigan estimated from recapture rates observed during our creel survey. 15 2 Estimated reporting rates of tagged fish by commercial fishermen in the Illinois waters of Lake Michigan. 16 3. Summary of adult yellow perch collected and tagged in southwestern Lake Michigan, 1986-1993 18 4. Summary of recaptured fish by site, season, sex, year, and source of tag return. 5 Percentage of fish tagged in a given season and recaptured in a successive season 6 CPE of larval yellow perch collected off Waukegan, Lake Michigan, 1990-1923. 7 Summary of fish used for age and growth 8 Age distribution of yellow perch by summarized by sex and year of capture. 9a. Population abundance estimates using the Lincoln index (Southwood 1978) 9b Population abundance estimates using the Jolly-Seber method (Southwood 1978) 9c Estimated survival (-Z) of yellow perch in three years in Lake Michigan 10 Catches per unit effort of adult yellow perch in Lake Michigan in each year of the study, summarized by season, gear type, and sampling site. 11 Length at age of male yellow perch collected off Milwaukee and/or Waukegan in four separate studies 8 Larval yellow perch catches in 1988-1992 9 Mean length of spring sampled male yellow perch by year class O1a-c Year class frequency of yellow perch collected in gill nets from 1986 to 1988. 50 lOd-f Year class frequency of yellow perch collected in fyke nets from 1989 to 1990. 51 1Og-h Year class frequency of yellow perch collected in fyke nets from 1991 to 1992. 52 11 Year class frequency of yellow perch from 1992 compared with CPE of young-of year perch trawled in 1987-1990. 53
Transactions of the American Fisheries Society, 1993
Distribution, Abundance, and Resting Microhabitat of Burbot on Julian's Reef, Southwestern L... more Distribution, Abundance, and Resting Microhabitat of Burbot on Julian's Reef, Southwestern Lake Michigan. THOMAS A EDSALL, GREGORY W KENNEDY, WILLIAM H HORNS Transactions of the American Fisheries Society ...
Patients in a methadone maintenance clinic were randomly assigned to two groups: one to have urin... more Patients in a methadone maintenance clinic were randomly assigned to two groups: one to have urine tests on-site (by the EMIT system) with immediate feedback of results to patients and staff; the other to have urine specimens sent away to an offsite laboratory for testing by thin-layer chromatography. Although other advantages might justify the adoption of on-site testing in methadone programs, the method appeared to have little or no therapeutic advantage over customary off-site testing. There were negligibly small differences between the groups with respect to illicit drug use.
Commercial fishing in Illinois waters of Lake Michigan was monitored from July 1989 through June ... more Commercial fishing in Illinois waters of Lake Michigan was monitored from July 1989 through June 1991. Biologists accompanied commercial fisherman on 104 fishing trips and observed the lifting of 141 miles of net. Estimated total incidental catches (including fishing for yellow perch and bloater chubs) during the first year of the study were 713 chinook salmon, 3288 lake trout, and 189 brown trout. During the second year the estimated catches were 404 chinook salmon, 2900 lake trout, and 298 brown trout. Of the catch of chinook salmon 80% occurred during fall (September 1 through November 14) on trips when yellow perch was the target species. Only 4% of the chinook salmon were in excellent condition when captured. Nets were often set and lifted on the same day during fall of both years. Daily catch rates in nets set for yellow perch during fall were 0.41 when the nets were set and lifted on the same day and 4.96 when nets were set and lifted on different days. Lake trout was the only salmonid species caught in significant numbers during fishing for bloater chubs. Estimated catches of lake trout during bloater chub fishing were 2100 in the first year of the study and 2363 in the second year. One-third of observed lake trout were in excellent condition when captured.
Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbor... more Illinois portion of Lake Michigan) and the primary launch sites were Waukegan and Diversey Harbors (representing 56% of launched boats). Data were collected using the Interview Form (Figure 2) and the Instantaneous Count Form (Figure 3). The use of these forms, as modified slightly for 1986, is discussed in detail in Appendix 1. Major expenses included expenditures for boats, motors, or trailers. During summer 1985, minor expenses included rods, reels, downriggers, lines, lures, bait, licenses, boat rental, launching fees, boat gas and oil, boat maintenance, automobile gas, and lodging, food, alcohol, and clothing for the trip. Other expenditures included anything not defined as minor or major expenditures. Because anglers almost never reported other expenditures, no estimates were made of daily or seasonal total expenditures in this category. For each primary site, the sampling unit was the calendar day, with estimates of effort, catch, and expenditures formed for each randomly selected day. Dates were randomly selected in a stratified design. Strata were defined by first dividing the total sampling period into sub-intervals of about 1 month each and then forming weekday and weekend (including holidays) strata within each time interval. Time intervals were identified with abbreviated names of months, although they did not correspond exactly to calendar months. The intervals were: apr= 1 April-12 May (6 weeks) may= 13 May-9 June (4 weeks) jun = 10 June-7 July (4 weeks) jul = 8 July-4 August (4 weeks) aug = 5 August-1 September (4 weeks) sep = 2 September-29 September (4 weeks) oct = 30 September-27 October (4 weeks) Record the total number of trailers of all types, but only count empty trailers (those without boats on them).
Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed... more Plasma methadone levels, symptom complaints, and urine tests for illicit opiate use were followed weekly in 17 patients on a methadone maintenance program. There were very large differences between patients in the plasma level established at a given dosage, implying large differences in the rate of methadone metabolism. Despite virtually constant daily dosage, the plasma methadone levels fluctuated greatly from week to week and from day to day in individual patients. With rate exceptions there was no relationship between plasma methadone level and symptom complaints or between weekly chamges in plasma methadone level and changes in symptom complaints. Except possible to identify the ocassional patient with unusually low plasam methadone levels, the determination of methadone levels is not likely to be or practical value in methadone programs.
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