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〕 | lat_d = 43 | lat_m = 38 | lat_s = 9 | lat_NS = N | long_d = 93 | long_m = 18 | long_s = 32 | long_EW = W | area_unit = acre | area_imperial = 1578 | area_round = 0 | established = 1947 | management_body = Minnesota Department of Natural Resources | map_locator = Minnesota | map = Minnesota Locator Map with US.PNG | map_caption = Location of Myre-Big Island State Park in Minnesota }} Myre-Big Island State Park is a state park of Minnesota, USA, just outside the city of Albert Lea. It has an area of . The park protects of shoreline on Albert Lea Lake. The nucleus of the park is Big Island, a island attached to the mainland by a causeway. In turn a causeway connects Big Island to Little Island. The park was formerly named Helmer Myre State Park after former Minnesota State Senator Helmer Myre. ==Natural history== The park is situated on the Bemis Moraine, which marks the southern extent of a glacial lobe during the Wisconsin glaciation 10,000 years ago. As the glacier retreated, the moraine caused the meltwater to back up behind it. Albert Lea Lake was created as a moraine-dammed lake and today covers . The park also contains an esker, a sinuous ridge of sand and gravel dropped by a stream running under the glacier. The mainland is primarily vegetated in oak savanna with several wetlands. Restoration ecology projects, including controlled burning and water retention strategies, are ongoing to maintain and improve these habitats. Big Island, protected from the wildfires that suppressed tree growth in the savannas and prairie of southern Minnesota, bears a closed forest savanna which looks like an old growth hardwood forest. It comprises maple, basswood, elm, green ash, ironwood, and red oak, with willows along the lakeshore. Albert Lea Lake is highly eutrophic. Moraine dammed lakes typically fill in, but this process has been exacerbated by agricultural runoff. Myre-Big Island State Park is known for its birdwatching opportunities, especially during the spring and fall migration. One particularly notable species is the American white pelican which congregates on Albert Lea Lake. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Myre-Big Island State Park」の詳細全文を読む スポンサード リンク
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