Name: Lake Michigan_ USA_ Historic lake trout spawning locations

Display Field: fish

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: Species occurrence data were obtained from the Atlas of Spawning and Nursery Areas of Great Lakes Fishes (Goodyear et al. 1982).  The atlas contains information on all of the commercially and recreationally important species that use the tributaries, littoral and open-water areas of the Great Lakes as spawning and nursery habitats.   Close to 9500 geo-referenced data records (occurrences of fish species) were imported into ArcView GIS. The 139 fish taxa reported in the Atlas had to be grouped into fewer broad categories to produce meaningful distribution maps.  We chose three functional classification schemes.  Jude and Pappas (1992) used Correspondence Analysis to partition fish species associated with the open water of each of the five Great Lakes and nine coastal wetlands.  Three species complexes were suggested:  a Great Lakes taxocene; a transitional taxocene, which utilized open water, near-shore, and wetlands; and a wetland taxocene.  We chose this as one of the classification schemes because we are particularly interested in identifying the distribution pattern of fish with coastal wetlands; for clarity sake, we have renamed these taxocenes coastal, intermediate and open-water, respectively.   For comparison, we also used Coker et al.s (2001) classification based on temperature preferenda (5 classes) and Balons (1975) reproductive guild classification (32 guilds). This dataset was uploaded to Data Basin and is available with additional information at: http://app.databasin.org/app/pages/datasetPage.jsp?id=96a152c2fa7f47baa00c8d246b2df2e1

Copyright Text:

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Use Standardized Queries: True

Extent:

XMin: -9784983.2407
YMin: 5104226.1602
XMax: -9465867.3668
YMax: 5796388.7972
Spatial Reference: 102100 (3857)

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Object ID Field: FID

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• guild (type: esriFieldTypeString, alias: guild, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• category (type: esriFieldTypeString, alias: category, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• temperatur (type: esriFieldTypeString, alias: temperatur, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
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Templates:

Name: Lake Michigan_ USA_ Historic lake trout spawning locations
Description:
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Attributes:

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Supports Rollback On Failure Parameter: true

Last Edit Date: 11/6/2024 7:07:24 PM

Schema Last Edit Date: 11/6/2024 7:07:24 PM

Data Last Edit Date: 11/6/2024 7:07:24 PM

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