Description

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Eurasian ruffe is a small member of the perch family and is native to northern Europe and Asia. It was likely transported to North America in the ballast water of vessels arriving from Europe in the mid 1980's. In order to prevent the spread of this invasive species to new areas, the Ontario government, and some American States, have banned the possession and sale of live or dead Eurasian ruffe, and using ruffe as bait. Eurasian ruffe are capable of adapting to a wide range of environmental conditions including fresh or brackish water with low or high nutrients, and a wide range of depths and temperatures. They are also capable of spawning in a wide variety of conditions and habitats.

Dataset Attributes

  • FID
    Number
  • OBJECTID
    Text
  • REPORTER
    Text
    {"value"=>"Minnesota Department of Natural Resources", "count"=>51} (), {"value"=>"Al Dextrase MNR - Peterborough", "count"=>8} (), {"value"=>"Erling Holm Royal Ontario Museum", "count"=>4} (), {"value"=>"George Johnson Ministry of Natural Resources - Thunder Bay", "count"=>3} (), {"value"=>"Mike Friday MNR - Lake Superior", "count"=>2} (), {"value"=>"Unknown OFAH Contributor", "count"=>1} (), {"value"=>"Scott Proper", "count"=>1} (), {"value"=>"Roger Tibbs", "count"=>1} (), {"value"=>"Micheal Deschamps MNR - Thunder Bay", "count"=>1} (), {"value"=>"John Schelling", "count"=>1} ()
  • OBSERVATIO
    Text
    {"value"=>"01 January 1993", "count"=>20} (), {"value"=>"01 January 1995", "count"=>6} (), {"value"=>"28 April 2004", "count"=>3} (), {"value"=>"14 August 1991", "count"=>3} (), {"value"=>"01 January 1997", "count"=>3} (), {"value"=>"01 January 1988", "count"=>3} (), {"value"=>"01 January 1987", "count"=>3} (), {"value"=>"25 September 1997", "count"=>2} (), {"value"=>"25 September 1996", "count"=>2} (), {"value"=>"22 October 1991", "count"=>2} ()
  • YEAR ACCUR
    Text
  • DATE ENTER
    Text
    {"value"=>"02 February 2016", "count"=>51} (), {"value"=>"06 June 2013", "count"=>30} ()
  • DATE UPDAT
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"30 October 2008", "count"=>5} (), {"value"=>"29 October 2008", "count"=>4} (), {"value"=>"23 September 2008", "count"=>4} (), {"value"=>"01 October 1996", "count"=>3} (), {"value"=>"23 April 2007", "count"=>2} (), {"value"=>"06 November 2008", "count"=>2} (), {"value"=>"31 October 2008", "count"=>1} (), {"value"=>"29 June 2004", "count"=>1} (), {"value"=>"24 April 2008", "count"=>1} ()
  • UPDATED BY
    Text
  • COLLECTOR
    Text
  • FWC OBSERV
    Text
  • DATE UNCER
    Text
  • SOURCE TYP
    Text
    {"value"=>"Bulk Data", "count"=>81} ()
  • FLORIDA RE
    Text
  • WEED WATCH
    Text
  • OBSERVAT_1
    Text
    {"value"=>" ", "count"=>63} (), {"value"=>"Ontario Ministry of Natural Resources", "count"=>8} (), {"value"=>"Royal Ontario Museum", "count"=>5} (), {"value"=>"Thunder Bay Harbour by LSMU", "count"=>1} (), {"value"=>"OFAH Staff", "count"=>1} (), {"value"=>"MNR", "count"=>1} (), {"value"=>"Erling Holm - Royal Ontario Museum", "count"=>1} (), {"value"=>"David Copplestone - OFAH Staff", "count"=>1} ()
  • COMMON NAM
    Text
    {"value"=>"Eurasian ruffe", "count"=>81} ()
  • SCIENTIFIC
    Text
    {"value"=>"Gymnocephalus cernua", "count"=>81} ()
  • PHENOLOGY
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"Unknown", "count"=>23} (), {"value"=>"YOY", "count"=>4} (), {"value"=>"Adult", "count"=>3} ()
  • ORIGINAL R
    Text
    {"value"=>"Gymnocephalus cernuus", "count"=>51} (), {"value"=>" ", "count"=>30} ()
  • SEX
    Text
  • REVIEWER I
    Text
  • CONFIDENCE
    Text
  • VOUCHER
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"0", "count"=>18} (), {"value"=>"1", "count"=>12} ()
  • HERBARIUM
    Text
  • HERBARIU_1
    Text
    {"value"=>" ", "count"=>78} (), {"value"=>" Record ID:74750", "count"=>1} (), {"value"=>" Record ID:63067", "count"=>1} (), {"value"=>" Record ID:63066", "count"=>1} ()
  • REFERENCE
    Text
    {"value"=>" ", "count"=>78} (), {"value"=>"Pratt, D.M., W.H. Blust and J.H. Selgeby. (1992) Ruffe, Gymnocephalus cernuus: Newly", "count"=>1} (), {"value"=>"MacCallum, Wayne. 1994. Ministry of Natural Resources \"Ruffe Surveillance Program 19", "count"=>1} (), {"value"=>"c/o Amy Benson USGS (2007) Personnel Communication regarding Ruffe in Lake Superior", "count"=>1} ()
  • HOST NAME
    Text
  • HOST PHENO
    Text
  • HOST DAMAG
    Text
  • MATURITY
    Text
  • LIFE STATU
    Text
  • SMALLEST O
    Text
  • LARGEST OB
    Text
  • INCIDENCE
    Text
  • SEVERITY
    Text
  • VERIFICATI
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"Other", "count"=>26} (), {"value"=>"Specimens", "count"=>3} (), {"value"=>"Expertise", "count"=>1} ()
  • IDENTIFICA
    Text
    {"value"=>"Possible", "count"=>51} (), {"value"=>" ", "count"=>30} ()
  • IDENTIFI_1
    Text
  • REVIEWED
    Text
    {"value"=>"Verified", "count"=>81} ()
  • REVIEWER
    Text
  • DATE REVIE
    Text
  • NUMBER COL
    Text
    {"value"=>" ", "count"=>58} (), {"value"=>"1", "count"=>11} (), {"value"=>"2", "count"=>5} (), {"value"=>"6", "count"=>3} (), {"value"=>"3", "count"=>2} (), {"value"=>"5", "count"=>1} (), {"value"=>"4", "count"=>1} ()
  • ABUNDANCE
    Text
  • DENSITY
    Text
  • GROSS AREA
    Text
  • INFESTED A
    Text
  • NATIVE CAN
    Text
  • STEM COUNT
    Text
  • TREATMENT
    Text
  • TREATMEN_1
    Text
  • TREATMEN_2
    Text
  • AGGRESSIVE
    Text
  • DISTURBANC
    Text
  • DISTRUBANC
    Text
  • CONTROL AC
    Text
  • PATCH TYPE
    Text
  • DISTURBA_1
    Text
  • POPULATION
    Text
  • INVASIVE C
    Text
  • OVERALL PE
    Text
  • OVERALL _1
    Text
  • ERADICATIO
    Text
  • PLANTS TRE
    Text
  • HABITAT
    Text
    {"value"=>" ", "count"=>78} (), {"value"=>"River: open water", "count"=>2} (), {"value"=>"Pond", "count"=>1} ()
  • LOCALITY
    Text
    {"value"=>"St. Louis Bay", "count"=>32} (), {"value"=>"Lake Superior", "count"=>10} (), {"value"=>" ", "count"=>10} (), {"value"=>"St. Louis River", "count"=>7} (), {"value"=>"Nearest Town: Thunder BayNearest Intersection: Near Junction W/kaministiquia River.", "count"=>2} (), {"value"=>"Nearest Town: Thunder BayNearest Intersection: Incan Superior Slip.", "count"=>2} (), {"value"=>"Welcome Islands", "count"=>1} (), {"value"=>"this particular area is the warmest, most turbid in the system", "count"=>1} (), {"value"=>"rock and weed", "count"=>1} (), {"value"=>"presence of weeds, unsure what type.", "count"=>1} ()
  • HUC NUMBER
    Text
  • ELEVATION
    Text
  • DISTURBA_2
    Text
  • DISTURBA_3
    Text
  • MANAGEMENT
    Text
  • IMPACTED R
    Text
  • LOCATION
    Text
    {"value"=>"St. Louis County, Minnesota, Uni", "count"=>41} (), {"value"=>"City of Thunder Bay, Ontario, Ca", "count"=>28} (), {"value"=>"Douglas County, Wisconsin, Unite", "count"=>4} (), {"value"=>"Lake County, Minnesota, United S", "count"=>3} (), {"value"=>"Carlton County, Minnesota, Unite", "count"=>2} (), {"value"=>"Municipality of Shuniah, Ontario", "count"=>1} (), {"value"=>"Municipality of Oliver Paipoonge", "count"=>1} (), {"value"=>"Cook County, Minnesota, United S", "count"=>1} ()
  • COORDINATE
    Text
    {"value"=>"48.3697,", "count"=>3} (), {"value"=>"48.4522,", "count"=>2} (), {"value"=>"48.39, -8", "count"=>2} (), {"value"=>"48.345, -", "count"=>2} (), {"value"=>"46.72, -9", "count"=>2} (), {"value"=>"48.4528,", "count"=>1} (), {"value"=>"48.4527,", "count"=>1} (), {"value"=>"48.4524,", "count"=>1} (), {"value"=>"48.406, -", "count"=>1} (), {"value"=>"48.4025,", "count"=>1} ()
  • CITY
    Text
    {"value"=>" ", "count"=>59} (), {"value"=>"Thunder Bay", "count"=>20} (), {"value"=>"Neebing", "count"=>1} (), {"value"=>"Kakabeka Falls", "count"=>1} ()
  • SECTION
    Text
  • TOWNSHIP
    Text
  • RANGE
    Text
  • QUART
    Text
  • QUAD
    Text
  • QUAD NUMBE
    Text
  • QUARTER QU
    Text
  • LOCAL OWNE
    Text
    {"value"=>" ", "count"=>61} (), {"value"=>"MNR District: Thunder Bay", "count"=>20} ()
  • NATIONAL O
    Text
  • SATELLITE
    Text
  • FOREST SER
    Text
  • NATIONAL F
    Text
  • RANGER DIS
    Text
  • AKEPIC SIT
    Text
  • AKEPIC ORI
    Text
  • MAP SCALE
    Text
  • MAP SOURCE
    Text
    {"value"=>" ", "count"=>75} (), {"value"=>"Map#66", "count"=>1} (), {"value"=>"Map#3", "count"=>1} (), {"value"=>"Map#29", "count"=>1} (), {"value"=>"Map#27", "count"=>1} (), {"value"=>"Map #26", "count"=>1} (), {"value"=>"3", "count"=>1} ()
  • MAP DATE
    Text
  • ACCESS
    Text
  • SITE NAME
    Text
  • COORDINA_1
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"100 Meters", "count"=>14} (), {"value"=>"1000 Meters", "count"=>12} (), {"value"=>"10000 Meters", "count"=>4} ()
  • DEPTH OF W
    Text
  • WATER BODY
    Text
  • WATER VELO
    Text
  • WATER CLAR
    Text
  • NUTRIENT L
    Text
  • SALINITY A
    Text
  • ASPECT
    Text
  • SOIL MOIST
    Text
  • SUBSTRATE
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"Unknown", "count"=>28} (), {"value"=>"Silt (0.004mm - 0.062mm diameter)", "count"=>1} (), {"value"=>"Cobble (64mm - 256mm diameter)", "count"=>1} ()
  • CWMA NAME
    Text
  • ALBERTA JU
    Text
  • SIGHTING W
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"16-3359-53629", "count"=>16} (), {"value"=>"16-3358-53576", "count"=>6} (), {"value"=>"16-3386-53684", "count"=>5} (), {"value"=>"16-5000-53161", "count"=>2} (), {"value"=>"16-3359-53611", "count"=>1} ()
  • LAKE/BAY N
    Text
    {"value"=>" ", "count"=>73} (), {"value"=>"Lake Superior", "count"=>8} ()
  • LAKE/BAY T
    Text
    {"value"=>" ", "count"=>73} (), {"value"=>"Lake", "count"=>8} ()
  • CREEK NAME
    Text
  • CREEK TYPE
    Text
  • RIVER NAME
    Text
    {"value"=>" ", "count"=>60} (), {"value"=>"Kaministiquia River", "count"=>14} (), {"value"=>"Current River", "count"=>4} (), {"value"=>"Mission River", "count"=>2} (), {"value"=>"McKellar River", "count"=>1} ()
  • RIVER TYPE
    Text
    {"value"=>" ", "count"=>60} (), {"value"=>"River", "count"=>21} ()
  • MUNCIPALIT
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"DISTRICT OF THUNDER BAY , CITY OF", "count"=>28} (), {"value"=>"DISTRICT OF THUNDER BAY , MUNICIP", "count"=>2} ()
  • CONSERVATI
    Text
    {"value"=>" ", "count"=>59} (), {"value"=>"Lakehead Region Conservation Authority", "count"=>22} ()
  • PROVINCIAL
    Text
    {"value"=>" ", "count"=>80} (), {"value"=>"KAKABEKA FALLS PROVINCIAL PARK", "count"=>1} ()
  • FISHERIES
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"6", "count"=>23} (), {"value"=>"9", "count"=>7} ()
  • MNR DISTRI
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"Thunder Bay", "count"=>30} ()
  • CONSERVA_1
    Text
  • CONSERVA_2
    Text
  • QUATERNARY
    Text
    {"value"=>" ", "count"=>59} (), {"value"=>"2AB-01", "count"=>16} (), {"value"=>"2AB-10", "count"=>5} (), {"value"=>"2AB-09", "count"=>1} ()
  • TERTIARY W
    Text
    {"value"=>" ", "count"=>59} (), {"value"=>"02AB", "count"=>22} ()
  • CONSERVA_3
    Text
  • FIRST NATI
    Text
  • FEDERAL LA
    Text
  • FEDERAL _1
    Text
  • FLORIDA LO
    Text
  • REFUGE
    Text
  • COURSE
    Text
  • ELEVATIO_1
    Text
  • SPEED IN M
    Text
  • CONSERVA_4
    Text
    {"value"=>" ", "count"=>69} (), {"value"=>"Lakehead Region Conservation Authority", "count"=>12} ()
  • WATER BO_1
    Text
  • DATA TYPE
    Text
  • STUDY TYPE
    Text
    {"value"=>" ", "count"=>60} (), {"value"=>"Unknown", "count"=>19} (), {"value"=>"trawling survey", "count"=>2} ()
  • VISIT TYPE
    Text
  • METHOD
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"GPS", "count"=>14} (), {"value"=>"GIS", "count"=>13} (), {"value"=>"list - Known Centroid", "count"=>3} ()
  • PRECISION
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"High", "count"=>26} (), {"value"=>"Medium", "count"=>4} ()
  • SURVEYOR
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"Al Dextrase", "count"=>8} (), {"value"=>"Erling Holm", "count"=>4} (), {"value"=>"George Johnson", "count"=>3} (), {"value"=>"Mike Friday", "count"=>2} (), {"value"=>"Scott Proper", "count"=>1} (), {"value"=>"Roger Tibbs", "count"=>1} (), {"value"=>"Micheal Deschamps", "count"=>1} (), {"value"=>"John Schelling", "count"=>1} (), {"value"=>"Francine MacDonald", "count"=>1} ()
  • OTHER SURV
    Text
  • REPORTER A
    Text
  • SOURCE NAM
    Text
  • SOURCE ID
    Text
    {"value"=>"9932", "count"=>1} (), {"value"=>"9913", "count"=>1} (), {"value"=>"9912", "count"=>1} (), {"value"=>"9911", "count"=>1} (), {"value"=>"9903", "count"=>1} (), {"value"=>"9902", "count"=>1} (), {"value"=>"9901", "count"=>1} (), {"value"=>"9900", "count"=>1} (), {"value"=>"6402", "count"=>1} (), {"value"=>"3935", "count"=>1} ()
  • SITE
    Text
  • URL
    Text
  • DATUM
    Text
  • GPS MODEL
    Text
  • COMMENTS
    Text
    {"value"=>" ", "count"=>51} (), {"value"=>"Confirmed. Provided records fRoyal Ontario Museum Royal Ontario Museum database. Occurance Type: Unknown. Verified by GIS Specialist: TRUE. ELSN: 180654", "count"=>4} (), {"value"=>"Confirmed. Previously, 7 ruffe were captured in 1991; six in the Incan Superior slip, and one approximately 7 km upstream from the mouth of the Kaministiquia River.. Occurance Type: Unknown. Verified by GIS Specialist: TRUE. ELSN: 180654", "count"=>2} (), {"value"=>"Confirmed. Occurance Type: Unknown. Verified by GIS Specialist: FALSE. ELSN: 180654", "count"=>2} (), {"value"=>"Confirmed. They were trawling the third week of October. Caught a YOY ruffe at same site that they captured ruffe at for the first time last year.. Occurance Type: Unknown. Verified by GIS Specialist: TRUE. ELSN: 180654", "count"=>1} (), {"value"=>"Confirmed. These are the first ruffe captured in the Thunder Bay harbour area. Occurance Type: Unknown. Verified by GIS Specialist: FALSE. ELSN: 180654", "count"=>1} (), {"value"=>"Confirmed. These are the first ruffe captured in the Thunder Bay harbour area sice 1996 sightings, same site where five were captured this year.. Occurance Type: Unknown. Verified by GIS Specialist: TRUE. ELSN: 180654", "count"=>1} (), {"value"=>"Confirmed. same site where they caught Ruffe last year. captured one young of the year in the Cargill Elevator slip, Mission River while trawling. Occurance Type: Unknown. Verified by GIS Specialist: TRUE. ELSN: 180654", "count"=>1} (), {"value"=>"Confirmed. reported ruffe in river from outh as far north as this location. Occurance Type: Unknown. Verified by GIS Specialist: TRUE. ELSN: 180654", "count"=>1} (), {"value"=>"Confirmed. Previously, 7 ruffe were captured in 1991; six in the Incan Superior slip, and one approximately 7 km upstream from the mouth of the Kaministiquia River.. Occurance Type: Unknown. Verified by GIS Specialist: FALSE. ELSN: 180654", "count"=>1} ()
  • PROJECT NA
    Text
  • PROJECT DE
    Text
  • PROJECT ME
    Text
  • PROJECT DI
    Text
  • COLLECTION
    Text
  • START TIME
    Text
  • STOP TIME
    Text
  • AGENT SOUR
    Text
  • QUANTITY
    Text
  • TRAP TYPE
    Text
    {"value"=>" ", "count"=>55} (), {"value"=>"Angling", "count"=>10} (), {"value"=>"Unknown", "count"=>9} (), {"value"=>"Trawl Net", "count"=>4} (), {"value"=>"Trap Net", "count"=>2} (), {"value"=>"Observation", "count"=>1} ()
  • NUMBER OF
    Text
  • TARGET NAM
    Text
  • TARGET COU
    Text
  • TARGET RAN
    Text
  • SPECIES FO
    Text
    {"value"=>"Positive", "count"=>81} ()
  • POLYGONWKT
    Text
    {"value"=>"POINT(-89.2494 48.3697)", "count"=>3} (), {"value"=>"POINT(-89.62505 48.40248)", "count"=>1} (), {"value"=>"POINT(-89.36283 48.34557)", "count"=>1} (), {"value"=>"POINT(-89.3513 48.35)", "count"=>1} (), {"value"=>"POINT(-89.3167 48.3477)", "count"=>1} (), {"value"=>"POINT(-89.31333 48.345)", "count"=>1} (), {"value"=>"POINT(-89.313 48.345)", "count"=>1} (), {"value"=>"POINT(-89.29288 48.35448)", "count"=>1} (), {"value"=>"POINT(-89.28125 48.36053)", "count"=>1} (), {"value"=>"POINT(-89.2493 48.3699)", "count"=>1} ()

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