Guide to Significant Wildlife Habitat - Door County Web Map

• A white cedar-basswood-quaking aspen forest has a dense understory of red-osier dogwood,
chokecherry, exotic honeysuckle (Lonicera spp.), red raspberry, and Canada yew (Judziewicz and
Kopitzke 1999). There are few herbs and no rare plant species recorded.
• Herring gulls are known to nest on the island.
Little Strawberry Island
• Little Strawberry Island is 6 acres in size, and is located in Green Bay just to the north of Adventure
Island. Nesting cormorants and gulls threaten the native vegetation of the island (Judziewicz and
Kopitzke, 1999). The island is privately owned, and is predominantly natural area. A small cabin is
located at the east end of the island.
• Little Strawberry Island is in the Town of Gibraltar. Gibraltar has adopted the county’s zoning
ordinance.
• Soils are nearly level to sloping on old glacial lake beach ridges. Dolostone bedrock is at a depth of
40 or more inches (USDA SCS 1978).
• Vegetation is dominated by stands of basswood and the understory plant cow-parsnip (Heracleum
lanatum). There are a few remnant mesic forest herbs such as dicentras (Dicentra canadensis and D.
cucullaria) and yellow trout-lily (Erythronium americanum) (Judziewicz and Kopitzke 1999).
• There are no known rare plant or animal species on Little Strawberry Island.
Jack Island
Jack Island is a 5-acre, low, brushy island in the waters of Green Bay. The island was once
forested and housed a resort in the 1930’s. Because of breeding colonies of gulls and cormorants
vegetation on the island has been severely altered. Jack Island is connected to Little Strawberry Island. It
is possible at times to wade between the two islands, as well as Pirate Island, a shoal located a short
distance to the northeast of Jack Island (Judziewicz and Kopitzke 1999).
• Jack Island is in the Town of Gibraltar. Gibraltar has adopted the county’s zoning ordinance.
• The island is privately owned and maintained in a natural state.
• Soils are nearly level to sloping on old glacial lake beach ridges. Dolostone bedrock is at a depth of
40 or more inches (USDA SCS 1978).
• Herring gulls and cormorants are the conspicuous nesting species. It is unknown what other animal
species are present, as comprehensive surveys have not been conducted.
• Vegetation is comprised of a few dead cottonwoods among red-osier dogwoods, and red-berried
elders. Exotic herbs such as motherwort and catnip are abundant (Judziewicz and Kopitzke 1999).
• No rare plant or animal species are known from Jack Island. However, in 2002, a nesting colony of
the state endangered Caspian Tern (Sterna caspia) was found on Pirate Island.
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