Service Description: Northern pike survey data from the spring migration period
Service ItemId: 6ed44b1da42a48ba80008d7b1c329b48
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Max Record Count: 1000
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Description: This shows documented observations of northern pike in waterways on the west shore of Green Bay; northern pike spend most of their lifecycle in Green Bay and may visit additional waterways. Northern pike production varies greatly from year to year, so points where no northern pike were found might contain northern pike in other years. Adults were only systematically surveyed starting in 2011, so the adult dataset is less comprehensive than the young-of-the-year dataset; adults must have spawned at or upstream from all young-of-the-year points, but may also have spawned unsuccessfully where young-of-the-year were not found. Young-of-the-year are extremely vulnerable to predation and to becoming stranded behind fish barriers, so the presence of young-of-the-year does not necessarily indicate successful recruitment of the next generation of northern pike. A few northern pike may be able to cross partially passable barriers but many others may be left behind, so the observation of northern pike beyond a partial barrier should not be taken to mean that the barrier is not a serious problem. Occurrences may also occur beyond impassable barriers because this layer’s records date back many decades to include historic spawning habitat; it is crucial to click on each point to see when northern pike were last seen there.
Copyright Text: © 2013 Wisconsin Department of Natural Resources (WDNR), Oneida Tribe of Indians of Wisconsin, U.S. Fish & Wildlife Service, Brown County, Oconto County, The Nature Conservancy, and U.S. Geological Survey Wisconsin Aquatic Gap Project
Spatial Reference: 102100 (3857)
Initial Extent:
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Spatial Reference: 102100 (3857)
Full Extent:
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Spatial Reference: 102100 (3857)
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