Steve Farha is a Biological Science Technician based in Ann Arbor, MI.
Science and Products
Data releases by this scientist
Lakebed features extracted from single-beam sonar in two Laurentian Great Lakes
Acoustic seabed classification (ASC) is an important method for understanding landscape-level physical and biological patterns in the aquatic environment. Bottom habitats in the Laurentian Great Lakes are poorly mapped to date, and will require a variety of contributors and data sources to complete. We repurposed a long-term split-beam echosounder dataset gathered for purposes of fisheries assessm
Hydroacoustic data from uncrewed surface vehicle (USV) overtakes in Lakes Huron and Michigan, 2021
These data were derived from hydroacoustic data collected by uncrewed surface vehicles (USVs) and powered research vessels. The powered vessels overtook the USVs in Lakes Huron and Michigan to study fish avoidance of survey vessels during traditional acoustic surveys. The water column was divided into three depth groups (epilimnion, metalimnion, hypolimnion) for analysis. Each drone transect was b
Wild lake trout (Salvelinus namaycush) diets from annual Lake Huron fall bottom trawl surveys (2008-2017)
Diet analyses were performed on juvenile lake trout (Salvelinus namaycush) captured by bottom trawl during annual USGS Great Lakes Science Center demersal fish community surveys in mid-October to mid-November 2008?2017 in Lake Huron. This dataset contains lake trout capture information (e.g., location, depth) and diet item data (taxa consumed and their associated lengths).
Publications by this scientist
Filter Total Items: 17
Large-scale variation in lakebed properties interpreted from single-beam sonar in two Laurentian Great Lakes
Acoustic seabed classification (ASC) is an important method for understanding landscape-level physical and biological patterns in the aquatic environment. Bottom habitats in the Laurentian Great Lakes are poorly mapped to date, and will require a variety of contributors and data sources to complete. We repurposed a long-term split-beam echosounder dataset gathered for purposes of fisheries assessm
Authors
Samuel Pecoraro, Peter C. Esselman, Timothy P. O'Brien, Steve A. Farha, David Warner
Diet and bathymetric distribution of juvenile Lake Trout Salvelinus namaycush in Lake Huron
Rehabilitation efforts for Lake Trout Salvelinus namaycush in Lake Huron have resulted in increased capture of young wild Lake Trout in annual bottom trawl surveys conducted by the U.S. Geological Survey. To better understand the ecology of juvenile (
Authors
Edward F. Roseman, Stephen Riley, Taaja Tucker, Steve A. Farha, Scott Jackson, Dustin Bowser
Evidence of spawning by lake trout Salvelinus namaycush on substrates at the base of large boulders in northern Lake Huron
Identification of lake trout spawning sites has focused on cobble substrates associated with bathymetric relief (e.g., ‘contour’ or ‘slope’ along reefs), but this ‘model’ may be narrow in scope. Previous telemetry work conducted near Drummond Island, USA, Lake Huron, identified egg presence in substrates at the base of large boulders (>1 m diameter); however, the extent of this phenomenon was unkn
Authors
Steve A. Farha, Thomas Binder, Charles R. Bronte, Daniel B. Hayes, John Janssen, J. Ellen Marsden, Stephen Riley, Charles C. Krueger
Status and trends of pelagic prey fish in Lake Huron, 2018
Scientists from the U.S. Geological Survey’s Great Lakes Science Center conducted integrated acoustic and mid-water trawl surveys of Lake Huron annually from 2004-2018. The 2018 survey was conducted during September and included transects in Lake Huron’s main basin, Georgian Bay, and North Channel. Mean lake-wide pelagic fish density was 1532 fish/ha and mean pelagic fish biomass was 4151 g/ha in
Authors
Timothy P. O'Brien, Steve A. Farha, David Warner, Peter Esselman, Kristy Phillips, Steven Lenart, Chris Olds
A conceptual framework for the identification and characterization of lacustrine spawning habitats for native lake charr Salvelinus namaycush
Lake charr Salvelinus namaycush are endemic to the formerly glaciated regions of North America and spawn primarily in lakes, unlike most other Salmoninae. Spawning habitats for lake charr are thought to be characterized by relatively large substrate particle sizes which provide sufficient interstitial spaces for egg incubation, but little is known about the physical processes that create or mainta
Authors
Stephen Riley, J. E. Marsden, M. S. Ridgway, Christopher Konrad, Steve A. Farha, Thomas R. Binder, Trevor A. Middel, Peter Esselman, Charles C. Krueger
Status and trends of pelagic prey fish in Lake Huron, 2017
Scientists from the U.S. Geological Survey’s Great Lakes Science Center conducted integrated acoustic and mid-water trawl surveys of Lake Huron in 1997 and annually from 2004-2017. The 2017 survey was conducted during September and included transects in Lake Huron’s main basin, Georgian Bay, and North Channel. Mean lake-wide pelagic fish density was 1582 fish/ha and mean pelagic fish biomass was 1
Authors
Timothy P. O'Brien, David M. Warner, Peter Esselman, Steve A. Farha, Steve Lenart, Chris Olds, Kristy Phillips
Fine-scale acoustic telemetry reveals unexpected lake trout, Salvelinus namaycush, spawning habitats in northern Lake Huron, North America
Previous studies of lake trout, Salvelinus namaycush, spawning habitat in the Laurentian Great Lakes have used time- and labour-intensive survey methods and have focused on areas with historic observations of spawning aggregations and on habitats prejudged by researchers to be suitable for spawning. As an alternative, we used fine-scale acoustic telemetry to locate, describe and compare lake trout
Authors
Thomas Binder, Steve A. Farha, Henry T. Thompson, Christopher Holbrook, Roger A. Bergstedt, Stephen Riley, Charles R. Bronte, Ji He, Charles C. Krueger
Evidence of sound production by spawning lake trout (Salvelinus namaycush) in lakes Huron and Champlain
Two sounds associated with spawning lake trout (Salvelinus namaycush) in lakes Huron and Champlain were characterized by comparing sound recordings to behavioral data collected using acoustic telemetry and video. These sounds were named growls and snaps, and were heard on lake trout spawning reefs, but not on a non-spawning reef, and were more common at night than during the day. Growls also occur
Authors
Nicholas S. Johnson, Dennis Higgs, Thomas R. Binder, J. Ellen Marsden, Tyler John Buchinger, Linnea Brege, Tyler Bruning, Steve A. Farha, Charles C. Krueger
Age and growth of round gobies in Lake Huron: Implications for food web dynamics
Although the round goby (Neogobius melanostomus) has become established throughout the Laurentian Great Lakes, information is scarce on spatial variation in round goby growth between and within lakes. Based on a sample of 754 specimens captured in 2014, age, growth, and mortality of round gobies at four locations in Lake Huron were assessed via otolith analysis. Total length (TL) of round gobies r
Authors
You J. Duan, Charles P. Madenjian, Cong X. Xie, James S. Diana, Timothy P. O'Brien, Ying M. Zhao, Ji X. He, Steve A. Farha, Bin Huo
Identification of lake trout Salvelinus namaycush spawning habitat in northern Lake Huron using high-resolution satellite imagery
The availability and quality of spawning habitat may limit lake trout recovery in the Great Lakes, but little is known about the location and characteristics of current spawning habitats. Current methods used to identify lake trout spawning locations are time- and labor-intensive and spatially limited. Due to the observation that some lake trout spawning sites are relatively clean of overlaying al
Authors
Amanda G. Grimm, Colin N. Brooks, Thomas R. Binder, Stephen C. Riley, Steve A. Farha, Robert A. Shuchman, Charles C. Krueger
Status of pelagic prey fishes in Lake Michigan, 2015
Acoustic surveys were conducted in late summer/early fall during the years 1992-1996 and 2001-2015 to estimate pelagic prey fish biomass in Lake Michigan. Midwater trawling during the surveys as well as target strength provided a measure of species and size composition of the fish community for use in scaling acoustic data and providing species-specific abundance estimates. The 2015 survey consist
Authors
David M. Warner, Randall M. Claramunt, Steve A. Farha, Dale Hanson, Timothy J. Desorcie, Timothy P. O'Brien
Status and trends of the Lake Huron offshore demersal fish community, 1976-2012
The USGS Great Lakes Science Center has conducted trawl surveys to assess annual changes in the offshore demersal fish community of Lake Huron since 1973. Sample sites include five ports in U.S. waters with less frequent sampling near Goderich, Ontario. The 2012 fall bottom trawl survey was carried out between 20 October – 5 November 2012 and included all U.S. ports as well as Goderich, ON. The 20
Authors
Edward F. Roseman, Stephen C. Riley, Steve A. Farha, Bryan M. Maitland, Taaja R. Tucker, Stacy A. Provo, Matthew W. McLean
Science and Products
- Data
Data releases by this scientist
Lakebed features extracted from single-beam sonar in two Laurentian Great Lakes
Acoustic seabed classification (ASC) is an important method for understanding landscape-level physical and biological patterns in the aquatic environment. Bottom habitats in the Laurentian Great Lakes are poorly mapped to date, and will require a variety of contributors and data sources to complete. We repurposed a long-term split-beam echosounder dataset gathered for purposes of fisheries assessmHydroacoustic data from uncrewed surface vehicle (USV) overtakes in Lakes Huron and Michigan, 2021
These data were derived from hydroacoustic data collected by uncrewed surface vehicles (USVs) and powered research vessels. The powered vessels overtook the USVs in Lakes Huron and Michigan to study fish avoidance of survey vessels during traditional acoustic surveys. The water column was divided into three depth groups (epilimnion, metalimnion, hypolimnion) for analysis. Each drone transect was bWild lake trout (Salvelinus namaycush) diets from annual Lake Huron fall bottom trawl surveys (2008-2017)
Diet analyses were performed on juvenile lake trout (Salvelinus namaycush) captured by bottom trawl during annual USGS Great Lakes Science Center demersal fish community surveys in mid-October to mid-November 2008?2017 in Lake Huron. This dataset contains lake trout capture information (e.g., location, depth) and diet item data (taxa consumed and their associated lengths). - Publications
Publications by this scientist
Filter Total Items: 17Large-scale variation in lakebed properties interpreted from single-beam sonar in two Laurentian Great Lakes
Acoustic seabed classification (ASC) is an important method for understanding landscape-level physical and biological patterns in the aquatic environment. Bottom habitats in the Laurentian Great Lakes are poorly mapped to date, and will require a variety of contributors and data sources to complete. We repurposed a long-term split-beam echosounder dataset gathered for purposes of fisheries assessmAuthorsSamuel Pecoraro, Peter C. Esselman, Timothy P. O'Brien, Steve A. Farha, David WarnerDiet and bathymetric distribution of juvenile Lake Trout Salvelinus namaycush in Lake Huron
Rehabilitation efforts for Lake Trout Salvelinus namaycush in Lake Huron have resulted in increased capture of young wild Lake Trout in annual bottom trawl surveys conducted by the U.S. Geological Survey. To better understand the ecology of juvenile (AuthorsEdward F. Roseman, Stephen Riley, Taaja Tucker, Steve A. Farha, Scott Jackson, Dustin BowserEvidence of spawning by lake trout Salvelinus namaycush on substrates at the base of large boulders in northern Lake Huron
Identification of lake trout spawning sites has focused on cobble substrates associated with bathymetric relief (e.g., ‘contour’ or ‘slope’ along reefs), but this ‘model’ may be narrow in scope. Previous telemetry work conducted near Drummond Island, USA, Lake Huron, identified egg presence in substrates at the base of large boulders (>1 m diameter); however, the extent of this phenomenon was unknAuthorsSteve A. Farha, Thomas Binder, Charles R. Bronte, Daniel B. Hayes, John Janssen, J. Ellen Marsden, Stephen Riley, Charles C. KruegerStatus and trends of pelagic prey fish in Lake Huron, 2018
Scientists from the U.S. Geological Survey’s Great Lakes Science Center conducted integrated acoustic and mid-water trawl surveys of Lake Huron annually from 2004-2018. The 2018 survey was conducted during September and included transects in Lake Huron’s main basin, Georgian Bay, and North Channel. Mean lake-wide pelagic fish density was 1532 fish/ha and mean pelagic fish biomass was 4151 g/ha inAuthorsTimothy P. O'Brien, Steve A. Farha, David Warner, Peter Esselman, Kristy Phillips, Steven Lenart, Chris OldsA conceptual framework for the identification and characterization of lacustrine spawning habitats for native lake charr Salvelinus namaycush
Lake charr Salvelinus namaycush are endemic to the formerly glaciated regions of North America and spawn primarily in lakes, unlike most other Salmoninae. Spawning habitats for lake charr are thought to be characterized by relatively large substrate particle sizes which provide sufficient interstitial spaces for egg incubation, but little is known about the physical processes that create or maintaAuthorsStephen Riley, J. E. Marsden, M. S. Ridgway, Christopher Konrad, Steve A. Farha, Thomas R. Binder, Trevor A. Middel, Peter Esselman, Charles C. KruegerStatus and trends of pelagic prey fish in Lake Huron, 2017
Scientists from the U.S. Geological Survey’s Great Lakes Science Center conducted integrated acoustic and mid-water trawl surveys of Lake Huron in 1997 and annually from 2004-2017. The 2017 survey was conducted during September and included transects in Lake Huron’s main basin, Georgian Bay, and North Channel. Mean lake-wide pelagic fish density was 1582 fish/ha and mean pelagic fish biomass was 1AuthorsTimothy P. O'Brien, David M. Warner, Peter Esselman, Steve A. Farha, Steve Lenart, Chris Olds, Kristy PhillipsFine-scale acoustic telemetry reveals unexpected lake trout, Salvelinus namaycush, spawning habitats in northern Lake Huron, North America
Previous studies of lake trout, Salvelinus namaycush, spawning habitat in the Laurentian Great Lakes have used time- and labour-intensive survey methods and have focused on areas with historic observations of spawning aggregations and on habitats prejudged by researchers to be suitable for spawning. As an alternative, we used fine-scale acoustic telemetry to locate, describe and compare lake troutAuthorsThomas Binder, Steve A. Farha, Henry T. Thompson, Christopher Holbrook, Roger A. Bergstedt, Stephen Riley, Charles R. Bronte, Ji He, Charles C. KruegerEvidence of sound production by spawning lake trout (Salvelinus namaycush) in lakes Huron and Champlain
Two sounds associated with spawning lake trout (Salvelinus namaycush) in lakes Huron and Champlain were characterized by comparing sound recordings to behavioral data collected using acoustic telemetry and video. These sounds were named growls and snaps, and were heard on lake trout spawning reefs, but not on a non-spawning reef, and were more common at night than during the day. Growls also occurAuthorsNicholas S. Johnson, Dennis Higgs, Thomas R. Binder, J. Ellen Marsden, Tyler John Buchinger, Linnea Brege, Tyler Bruning, Steve A. Farha, Charles C. KruegerAge and growth of round gobies in Lake Huron: Implications for food web dynamics
Although the round goby (Neogobius melanostomus) has become established throughout the Laurentian Great Lakes, information is scarce on spatial variation in round goby growth between and within lakes. Based on a sample of 754 specimens captured in 2014, age, growth, and mortality of round gobies at four locations in Lake Huron were assessed via otolith analysis. Total length (TL) of round gobies rAuthorsYou J. Duan, Charles P. Madenjian, Cong X. Xie, James S. Diana, Timothy P. O'Brien, Ying M. Zhao, Ji X. He, Steve A. Farha, Bin HuoIdentification of lake trout Salvelinus namaycush spawning habitat in northern Lake Huron using high-resolution satellite imagery
The availability and quality of spawning habitat may limit lake trout recovery in the Great Lakes, but little is known about the location and characteristics of current spawning habitats. Current methods used to identify lake trout spawning locations are time- and labor-intensive and spatially limited. Due to the observation that some lake trout spawning sites are relatively clean of overlaying alAuthorsAmanda G. Grimm, Colin N. Brooks, Thomas R. Binder, Stephen C. Riley, Steve A. Farha, Robert A. Shuchman, Charles C. KruegerStatus of pelagic prey fishes in Lake Michigan, 2015
Acoustic surveys were conducted in late summer/early fall during the years 1992-1996 and 2001-2015 to estimate pelagic prey fish biomass in Lake Michigan. Midwater trawling during the surveys as well as target strength provided a measure of species and size composition of the fish community for use in scaling acoustic data and providing species-specific abundance estimates. The 2015 survey consistAuthorsDavid M. Warner, Randall M. Claramunt, Steve A. Farha, Dale Hanson, Timothy J. Desorcie, Timothy P. O'BrienStatus and trends of the Lake Huron offshore demersal fish community, 1976-2012
The USGS Great Lakes Science Center has conducted trawl surveys to assess annual changes in the offshore demersal fish community of Lake Huron since 1973. Sample sites include five ports in U.S. waters with less frequent sampling near Goderich, Ontario. The 2012 fall bottom trawl survey was carried out between 20 October – 5 November 2012 and included all U.S. ports as well as Goderich, ON. The 20AuthorsEdward F. Roseman, Stephen C. Riley, Steve A. Farha, Bryan M. Maitland, Taaja R. Tucker, Stacy A. Provo, Matthew W. McLean