Lori Evrard is a Biological Science Technician based in Ashland, WI.
I am a Biological Technician working on Lake Superior fisheries. I assist with all aspects of our field station. I work in the field aboard the Research Vessel Kiyi and in the station laboratory. I manage our station's databases and paper field record collection, assist with administrative assistant duties, make GIS maps, manage our vehicle fleet, am co-safety liaison, and am lab manager. The first half of my career (1989-2004) focused on the assessment of the fish community of the St. Louis River Estuary (Duluth, MN and Superior, WI harbors) after the invasive species Ruffe (Gymnocephalus cernuus), was discovered there for the first time in the Great Lakes.
Professional Experience
USGS - Great Lakes Science Center - Lake Superior Biological Station 1991 to Present
USGS - Great Lakes Science Center - Lake Superior Biological Station intern/work study 1989-1991
Education and Certifications
Bachelor of Science - Biology Northland College 1991
Science and Products
Publications by this scientist
Filter Total Items: 25
Status and trends in the Lake Superior fish community, 2022
In 2022, the Lake Superior fish community was sampled with daytime bottom and surface trawls at 71 nearshore locations in May-June and 35 offshore locations in July, and at 51 Coordinated Science and Monitoring Initiative (CSMI) locations in July-October with bottom trawls, surface trawls, mid-water trawls and acoustics that were previously sampled in 2011 and 2016. Nearshore bottom trawls collect
Authors
Mark Vinson, Daniel Yule, Lori M. Evrard, Sydney B Phillips
Status and trends in the Lake Superior fish community, 2020
The Lake Superior fish community within Management Unit WI-2 was sampled in July 2020 with daytime bottom trawls at 11 nearshore stations. The 11 locations sampled were long-term monitoring sites that had been annually sampled since 1974. In 2020, the number of species collected at each site ranged from 0 to 13, with a mean of 6.3 and median of six. All comparisons to 2020 results were limited to
Authors
Mark Vinson, Lori M. Evrard, Owen Gorman, Daniel Yule
Status and trends in the Lake Superior fish community, 2021
The Lake Superior nearshore fish community was sampled in May-June 2021 with daytime bottom trawl tows at 45 stations located in USA waters. The 45 locations sampled were long-term monitoring sites that had been annually sampled since 1978. All comparisons to 2021 results were limited to past collections from USA waters, as compared to previous years, where comparisons included USA and Canadian si
Authors
Mark Vinson, Daniel Yule, Lori M. Evrard, Owen T. Gorman, Sydney B Phillips
Lake Superior Kiyi reproductive biology
ObjectiveThe Lake Superior Kiyi Coregonus kiyi is an understudied species being considered for reintroduction into Laurentian Great Lakes where it no longer occurs. Herein, we provide descriptions of Kiyi reproductive biology with the intention of guiding potential gamete collections for propagation.MethodsData were collected on Kiyi spawning timing, spawning locations, spawning season catch rates
Authors
Mark Vinson, Matthew E. Herbert, Amanda Susanne Ackiss, Jamie A. Dobosenski, Lori M. Evrard, Owen Gorman, Joshua F Lyons, Sydney B Phillips, Daniel Yule
Concordant patterns of morphological, stable isotope, and genetic variation in a recent ecological radiation (Salmonidae: Coregonus spp.)
Groups of sympatric taxa with low interspecific genetic differentiation, but considerable ecological differences, offer great opportunities to study the dynamics of divergence and speciation. This is the case of ciscoes (Coregonus spp.) in the Laurentian Great Lakes, which are characterized by a complex evolutionary history and are commonly described as having undergone an adaptive radiation. In t
Authors
Moises A Bernal, Daniel Yule, Wendylee Stott, Lori M. Evrard, Thomas E Dowling, Trevor J. Krabbenhoft
Status and trends in the Lake Superior fish community, 2019
The Lake Superior fish community was sampled in 2019 with daytime bottom trawls at 76 nearshore and 35 offshore stations distributed throughout the lake. In the nearshore zone, 25,131 fish from 24 species or morphotypes were collected. The number of species collected at nearshore stations ranged from 0 to 15, with a mean of 5.6 and median of five. Nearshore mean biomass was 5.7 kg/ha which was sim
Authors
Mark Vinson, Lori M. Evrard, Owen Gorman, Caroline Lynn Rosinski, Daniel Yule
Status and Trends in the Lake Superior Fish Community, 2017
In 2017, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 36 offshore stations. Spring nearshore and summer offshore water temperatures in 2017 were similar to slightly cooler than the 1991-2017 average. In the nearshore zone, a total of 28,902 individual fish from 27 species or morphotypes were collected. The number of species collected at each station r
Authors
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel Yule
Status and trends in the Lake Superior fish community, 2016
In 2016, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 35 offshore stations. Spring and summer water temperatures in 2016 were warmer than average and considerably warmer than observed in 2014 and 2015. In the nearshore zone, a total of 17,449 individuals from 20 species or morphotypes were collected. Nearshore lakewide mean biomass was 2.2 kg/ha, whic
Authors
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel Yule
Status and trends in the Lake Superior fish community, 2015
In 2015, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 33 offshore stations. Spring and summer water temperatures in 2015 were colder than average, but warmer than that observed in 2014. In the nearshore zone, a total of 11,882 individuals from 22 species or morphotypes were collected. Nearshore lakewide mean biomass was 1.8 kg/ha, which was near the l
Authors
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. Yule
Status and trends in the Lake Superior fish community, 2013
In 2013, the Lake Superior fish community was sampled with daytime bottom trawls at 79 nearshore and 35 offshore locations. In the nearshore zone, a total of 23,432 individuals of 27 species or morphotypes were collected. Nearshore lakewide mean biomass was 5.5 kg ha-1, which was slightly higher than that observed in the past few years, but below the long-term average of 8.8 kg ha-1. In the offsho
Authors
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. Yule
Status and trends in the Lake Superior fish community, 2014
In 2014, the Lake Superior fish community was sampled with daytime bottom trawls at 73 nearshore and 30 offshore stations. Spring and summer water temperatures were the coldest measured for the period of records for the surveys. In the nearshore zone, a total of 15,372 individuals from 28 species or morphotypes were collected. Nearshore lakewide mean biomass was 6.9 kg/ha, which was higher than th
Authors
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel Yule
Burrowing mayfly populations in Chequamegon Bay, Wisconsin: 2002 and 2012
Burrowing mayflies (Ephemeroptera: Ephemeridae) are sensitive to pollution and have been used as environmental indicators in the Great Lakes. Hexagenia limbata and Ephemera simulans population abundance and biomass estimates from Chequamegon Bay, Lake Superior, were compared between the years 2002 and 2012 as well as inside and outside the Northern States Power Lakefront Superfund site. Mean abund
Authors
Kristin M. Brunk, Mark R. Vinson, Derek H. Ogle, Lori M. Evrard
Data releases by this scientist
Historical Ice Breakup Dates for Chequamegon Bay, Lake Superior (ver. 5.0, September 2022)
Ice breakup dates of Chequamegon Bay, Lake Superior from 1911 to 2022 were compiled by Lori Evrard (USGS, GLSC, Lake Superior Biological Station, Ashland, WI). Ice breakup date is the day in spring when winter ice cover substantially leaves a water body. Local residents deem "ice breakup" as when the ice moves northeast of a line straight across Chequamegon Bay out from Ellis Avenue (State highway
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Science and Products
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Publications by this scientist
Filter Total Items: 25Status and trends in the Lake Superior fish community, 2022
In 2022, the Lake Superior fish community was sampled with daytime bottom and surface trawls at 71 nearshore locations in May-June and 35 offshore locations in July, and at 51 Coordinated Science and Monitoring Initiative (CSMI) locations in July-October with bottom trawls, surface trawls, mid-water trawls and acoustics that were previously sampled in 2011 and 2016. Nearshore bottom trawls collectAuthorsMark Vinson, Daniel Yule, Lori M. Evrard, Sydney B PhillipsStatus and trends in the Lake Superior fish community, 2020
The Lake Superior fish community within Management Unit WI-2 was sampled in July 2020 with daytime bottom trawls at 11 nearshore stations. The 11 locations sampled were long-term monitoring sites that had been annually sampled since 1974. In 2020, the number of species collected at each site ranged from 0 to 13, with a mean of 6.3 and median of six. All comparisons to 2020 results were limited toAuthorsMark Vinson, Lori M. Evrard, Owen Gorman, Daniel YuleStatus and trends in the Lake Superior fish community, 2021
The Lake Superior nearshore fish community was sampled in May-June 2021 with daytime bottom trawl tows at 45 stations located in USA waters. The 45 locations sampled were long-term monitoring sites that had been annually sampled since 1978. All comparisons to 2021 results were limited to past collections from USA waters, as compared to previous years, where comparisons included USA and Canadian siAuthorsMark Vinson, Daniel Yule, Lori M. Evrard, Owen T. Gorman, Sydney B PhillipsLake Superior Kiyi reproductive biology
ObjectiveThe Lake Superior Kiyi Coregonus kiyi is an understudied species being considered for reintroduction into Laurentian Great Lakes where it no longer occurs. Herein, we provide descriptions of Kiyi reproductive biology with the intention of guiding potential gamete collections for propagation.MethodsData were collected on Kiyi spawning timing, spawning locations, spawning season catch ratesAuthorsMark Vinson, Matthew E. Herbert, Amanda Susanne Ackiss, Jamie A. Dobosenski, Lori M. Evrard, Owen Gorman, Joshua F Lyons, Sydney B Phillips, Daniel YuleConcordant patterns of morphological, stable isotope, and genetic variation in a recent ecological radiation (Salmonidae: Coregonus spp.)
Groups of sympatric taxa with low interspecific genetic differentiation, but considerable ecological differences, offer great opportunities to study the dynamics of divergence and speciation. This is the case of ciscoes (Coregonus spp.) in the Laurentian Great Lakes, which are characterized by a complex evolutionary history and are commonly described as having undergone an adaptive radiation. In tAuthorsMoises A Bernal, Daniel Yule, Wendylee Stott, Lori M. Evrard, Thomas E Dowling, Trevor J. KrabbenhoftStatus and trends in the Lake Superior fish community, 2019
The Lake Superior fish community was sampled in 2019 with daytime bottom trawls at 76 nearshore and 35 offshore stations distributed throughout the lake. In the nearshore zone, 25,131 fish from 24 species or morphotypes were collected. The number of species collected at nearshore stations ranged from 0 to 15, with a mean of 5.6 and median of five. Nearshore mean biomass was 5.7 kg/ha which was simAuthorsMark Vinson, Lori M. Evrard, Owen Gorman, Caroline Lynn Rosinski, Daniel YuleStatus and Trends in the Lake Superior Fish Community, 2017
In 2017, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 36 offshore stations. Spring nearshore and summer offshore water temperatures in 2017 were similar to slightly cooler than the 1991-2017 average. In the nearshore zone, a total of 28,902 individual fish from 27 species or morphotypes were collected. The number of species collected at each station rAuthorsMark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel YuleStatus and trends in the Lake Superior fish community, 2016
In 2016, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 35 offshore stations. Spring and summer water temperatures in 2016 were warmer than average and considerably warmer than observed in 2014 and 2015. In the nearshore zone, a total of 17,449 individuals from 20 species or morphotypes were collected. Nearshore lakewide mean biomass was 2.2 kg/ha, whicAuthorsMark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel YuleStatus and trends in the Lake Superior fish community, 2015
In 2015, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 33 offshore stations. Spring and summer water temperatures in 2015 were colder than average, but warmer than that observed in 2014. In the nearshore zone, a total of 11,882 individuals from 22 species or morphotypes were collected. Nearshore lakewide mean biomass was 1.8 kg/ha, which was near the lAuthorsMark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. YuleStatus and trends in the Lake Superior fish community, 2013
In 2013, the Lake Superior fish community was sampled with daytime bottom trawls at 79 nearshore and 35 offshore locations. In the nearshore zone, a total of 23,432 individuals of 27 species or morphotypes were collected. Nearshore lakewide mean biomass was 5.5 kg ha-1, which was slightly higher than that observed in the past few years, but below the long-term average of 8.8 kg ha-1. In the offshoAuthorsMark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. YuleStatus and trends in the Lake Superior fish community, 2014
In 2014, the Lake Superior fish community was sampled with daytime bottom trawls at 73 nearshore and 30 offshore stations. Spring and summer water temperatures were the coldest measured for the period of records for the surveys. In the nearshore zone, a total of 15,372 individuals from 28 species or morphotypes were collected. Nearshore lakewide mean biomass was 6.9 kg/ha, which was higher than thAuthorsMark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel YuleBurrowing mayfly populations in Chequamegon Bay, Wisconsin: 2002 and 2012
Burrowing mayflies (Ephemeroptera: Ephemeridae) are sensitive to pollution and have been used as environmental indicators in the Great Lakes. Hexagenia limbata and Ephemera simulans population abundance and biomass estimates from Chequamegon Bay, Lake Superior, were compared between the years 2002 and 2012 as well as inside and outside the Northern States Power Lakefront Superfund site. Mean abundAuthorsKristin M. Brunk, Mark R. Vinson, Derek H. Ogle, Lori M. Evrard - Data
Data releases by this scientist
Historical Ice Breakup Dates for Chequamegon Bay, Lake Superior (ver. 5.0, September 2022)
Ice breakup dates of Chequamegon Bay, Lake Superior from 1911 to 2022 were compiled by Lori Evrard (USGS, GLSC, Lake Superior Biological Station, Ashland, WI). Ice breakup date is the day in spring when winter ice cover substantially leaves a water body. Local residents deem "ice breakup" as when the ice moves northeast of a line straight across Chequamegon Bay out from Ellis Avenue (State highway - Multimedia
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