North Shore Highlands S U B S E C T I O N P R O F I L E
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for the Wild & Rare An Action Plan for Minnesota Wildlife North Shore Highlands S u b s e c t i o n P r o f i l e Minnesota’s Comprehensive Wildlife Conservation Strategy North Shore Highlands North Shore Highlands SUBSECTION OVERVIEW The North Shore Highlands Subsection is a narrow strip 20 to 25 miles Quick facts wide that follows the shoreline of Lake Superior from Duluth to the Acres: 1,481,891 (2.7% of state) eastern tip of Minnesota. Lake Superior dominates the area and Ownership This map depicts the number of validated records of moderates its climate. The terrain varies from gently rolling hills to Public Private Tribal species in greatest conservation need since 1990 per steep cliffs. There are 20 lakes larger than 160 acres in size. Numerous 53.1% 43.1% 3.8% township and public land/conservancy land. It suggests relationships between known SGCN occurrences and short streams, 10 to 15 miles in length, run from the highland to the Population density (people/sq. mi.) shore of Lake Superior, most ending in waterfalls near the shoreline. A conservation management lands. Current Change mosaic of forest habitats stretches across this landscape, heavily (2000-2010) influenced by aspen-birch, with minor amounts of white and red pine, 56 +2.8 mixed hardwood-pine, and conifer bogs and swamp. Current Land Use/Land Cover Recreation, tourism, and forestry are the predominant land uses in this Developed subsection. There is tremendous development pressure along the 4% Row crop highly environmentally sensitive Lake Superior shoreline, and second- Water 1% tier development beyond the shoreline looks to be the next significant 4% Pasture growth area. The North Shore Highlands is host to the popular North 2% Wetland/ Open Shore State Trail, which is a major snowmobile destination. Parts of 17% this trail are currently being considered for possible summer season Forest ATV use, as are other areas along the shore. Much of the white pine- 72% red pine forests have been logged and replaced with quaking aspen- paper birch. This subsection contains significant old-growth northern hardwood and upland northern white cedar forest. The subsection also contains the highest density of designated trout streams in Minnesota. The source of water for most of these streams is surface runoff. HIGHLIGHTS SPECIES IN GREATEST CONSERVATION • The North Shore Highlands and NEED associated waters of Lake Superior 84 Species in Greatest Conservation Need (SGCN) are known or are home to bald eagles, peregrine predicted to occur within the North Shore Highlands. These SGCN falcons, common terns, Franklin’s include 25 species that are federal or state endangered, threatened, or ground squirrels, Connecticut of special concern. The table, SGCN by Taxonomic Group, displays warblers, boreal owls, merlins, by taxonomic group the number of SGCN that occur in the subsection, common ravens, northern myotis, deepwater sculpin, and kiyi. as well as the percentage of the total SGCN set represented by each Sources: MN DNR Natural Heritage database, MN DNR County Biological Survey (MCBS), MN DNR Statewide Mussel Survey, MN DNR taxon. For example, 10 mammal SGCN are known or predicted to • This is one of the most important Fisheries Fish database. Areas with no MCBS animal surveys may have had mussel and fish surveys, as well as reports of other species occur in the North Shore Highlands, approximately 46% of all and visible migratory corridors for occurrences recorded in the MN DNR Natural Heritage database. mammal SGCN in the state. songbirds and raptors in the entire SGCN BY TAXONOMIC GROUP Midwest as birds pass along the North Shore and over Hawk Ridge Taxa # of Percentage Examples of SGCN every fall. SGCN of SGCN Set by Taxon • Rivers and associated forests SPECIES PROBLEM ANALYSIS Amphibians 2 33.3 Eastern red-backed salamander within this subsection provide Birds 50 51.5 Black-throated blue warbler important habitat for wood turtles. The species problem analysis provides information on the factors influencing the vulnerability or decline of SGCN that are Fish 8 17.0 Lake chub known or predicted to occur in the subsection. The table lists the nine problems, or factors, used in the analysis, and the Insects 9 16.1 Extra-striped snaketail dragonfly • Areas important for SGCN include percentage of SGCN in the subsection for which each factor influences species vulnerability or decline. The results of the Cloquet Valley, Finland, Pat Mammals 10 45.5 Canada lynx species problem analysis indicate that habitat loss and degradation in the subsection are the most significant challenges Bayle, and Grand Portage SFs; and Mollusks 2 5.1 Black Sandshell facing SGCN populations. Reptiles 3 17.6 Wood turtle many SPs and SNAs along the North Shore of Lake Superior. NOTE: The inverse of the percentages for each problem does not necessarily represent the percentage of SGCN for which the factor is not a problem, but Spiders 0 0 NA instead may indicate that there is not sufficient information available to determine the level of influence the factor has on SGCN in the subsection. SPECIES SPOTLIGHT Problem Percentage of SGCN in the Subsection for Which This Is a Problem Black-throated blue warbler (Dendroica caerulescens) Habitat Loss in MN 73 Distribution Limited to selected areas of hardwood and mixed Habitat Degradation in MN 82 hardwood-coniferous forests of northeastern Minnesota. Habitat Loss/Degradation Outside of MN 38 Abundance Rare, and limited to specific habitat areas of northeastern Invasive Species and Competition 26 Minnesota, particularly along the North Shore of Lake Pollution 26 Superior at Tettegouche State Park. Social Tolerance/Persecution/Exploitation 25 Legal Status Federally protected migratory bird. Disease 1 Comments Population considered stable, but more assessment needed Food Source Limitations 2 to determine long-term trends. Other 6 Tomorrow’s Habitat for the Wild and Rare: An Action Plan for Minnesota Wildlife 166 Tomorrow’s Habitat for the Wild and Rare: An Action Plan for Minnesota Wildlife 167 North Shore Highlands North Shore Highlands SUBSECTION OVERVIEW The North Shore Highlands Subsection is a narrow strip 20 to 25 miles Quick facts wide that follows the shoreline of Lake Superior from Duluth to the Acres: 1,481,891 (2.7% of state) eastern tip of Minnesota. Lake Superior dominates the area and Ownership This map depicts the number of validated records of moderates its climate. The terrain varies from gently rolling hills to Public Private Tribal species in greatest conservation need since 1990 per steep cliffs. There are 20 lakes larger than 160 acres in size. Numerous 53.1% 43.1% 3.8% township and public land/conservancy land. It suggests relationships between known SGCN occurrences and short streams, 10 to 15 miles in length, run from the highland to the Population density (people/sq. mi.) shore of Lake Superior, most ending in waterfalls near the shoreline. A conservation management lands. Current Change mosaic of forest habitats stretches across this landscape, heavily (2000-2010) influenced by aspen-birch, with minor amounts of white and red pine, 56 +2.8 mixed hardwood-pine, and conifer bogs and swamp. Current Land Use/Land Cover Recreation, tourism, and forestry are the predominant land uses in this Developed subsection. There is tremendous development pressure along the 4% Row crop highly environmentally sensitive Lake Superior shoreline, and second- Water 1% tier development beyond the shoreline looks to be the next significant 4% Pasture growth area. The North Shore Highlands is host to the popular North 2% Wetland/ Open Shore State Trail, which is a major snowmobile destination. Parts of 17% this trail are currently being considered for possible summer season Forest ATV use, as are other areas along the shore. Much of the white pine- 72% red pine forests have been logged and replaced with quaking aspen- paper birch. This subsection contains significant old-growth northern hardwood and upland northern white cedar forest. The subsection also contains the highest density of designated trout streams in Minnesota. The source of water for most of these streams is surface runoff. HIGHLIGHTS SPECIES IN GREATEST CONSERVATION • The North Shore Highlands and NEED associated waters of Lake Superior 84 Species in Greatest Conservation Need (SGCN) are known or are home to bald eagles, peregrine predicted to occur within the North Shore Highlands. These SGCN falcons, common terns, Franklin’s include 25 species that are federal or state endangered, threatened, or ground squirrels, Connecticut of special concern. The table, SGCN by Taxonomic Group, displays warblers, boreal owls, merlins, by taxonomic group the number of SGCN that occur in the subsection, common ravens, northern myotis, deepwater sculpin, and kiyi. as well as the percentage of the total SGCN set represented by each Sources: MN DNR Natural Heritage database, MN DNR County Biological Survey (MCBS), MN DNR Statewide Mussel Survey, MN DNR taxon. For example, 10 mammal SGCN are known or predicted to • This is one of the most important Fisheries Fish database. Areas with no MCBS animal surveys may have had mussel and fish surveys, as well as reports of other species occur in the North Shore Highlands, approximately 46% of all and visible migratory corridors for occurrences recorded in the MN DNR Natural Heritage database. mammal SGCN in the state. songbirds and raptors in the entire SGCN BY TAXONOMIC GROUP Midwest as birds pass along the North Shore and over Hawk Ridge Taxa # of Percentage Examples of SGCN every fall. SGCN of SGCN Set by Taxon • Rivers and associated forests SPECIES PROBLEM ANALYSIS Amphibians 2 33.3 Eastern red-backed salamander within this subsection provide Birds 50 51.5 Black-throated blue warbler important habitat for wood turtles. The species problem analysis provides information on the factors influencing the vulnerability or decline of SGCN that are Fish 8 17.0 Lake chub known or predicted to occur in the subsection.