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For information on Wisconsin's Ecological Landscapes, contact:
Andy Stoltman
608-266-9841

North Central Forest Ecological Landscape

Download the North Central Forest chapter [PDF] of the Ecological Landscapes of Wisconsin. This chapter provides a detailed assessment of the ecological and socioeconomic conditions for the North Central Forest. It also identifies important planning and management considerations and suggests management opportunities that are compatible with the ecology of the landscape. The tabs below provide additional information.

Landscape at a Glance


Physical & Biotic Environment

Size

9,543 square miles (6,107,516 acres), representing 17.1% of the total land area of the state.

Climate

Typical of northern Wisconsin, mean growing season in the North Central Forest is 115 days, the shortest growing season of all Ecological Landscapes in the state. The mean annual temperature is 40.3 deg. F. Summer temperatures can be cold or freezing at night in the low-lying areas, limiting the occurrence of some biota. The mean annual precipitation is 32.3 inches and the mean annual snowfall is 63 inches. However, heavier snowfall can occur closer to Lake Superior, especially in the northwestern part of the Ecological Landscape in the topographically higher Penokee-Gogebic Iron Range. The cool temperatures and short growing season are not conducive to supporting agricultural row crops such as corn in most parts of the Ecological Landscape. Only six percent of the North Central Forest is in agricultural use. The climate is especially favorable for the growth of forests, which cover roughly 75% of the Ecological Landscape.  Learn more from the chapter [PDF]

Bedrock

Predominantly igneous and metamorphic rock, generally covered by 5 to 100 feet of glacial drift deposits.  Learn more from the chapter [PDF]

Geology & Landforms

Landforms are characterized by end and ground moraines with some pitted outwash and bedrock-controlled areas. Kettle depressions and steep ridges are found in the northern portion of the North Central Forest. Two prominent areas here are the Penokee-Gogebic Iron Range in the north (which extends into Upper Michigan), and Timm's Hill, the highest point in Wisconsin (at 1,951 feet) in the south. Drumlins are important landforms in some parts of the North Central Forest.  Learn more from the chapter [PDF]

Soils

Soils consist of sandy loams, sands, and silts. Organic soils, peats and mucks, are common in poorly drained lowlands.  Learn more from the chapter [PDF]

Hydrology

Rivers, streams, and springs are common and found throughout this Ecological Landscape. Major rivers include the Wisconsin, Chippewa, Flambeau, Jump, Wolf, Pine, Popple, and Peshtigo. Large lakes include Namekagon, Courte Oreilles, Owen, Round, Butternut, North Twin, Metonga, Pelican, Pine, Kentuck, Pickerel, and Lucerne. Several large man-made flowages occur here such as the Chippewa, Turtle-Flambeau, Gile, Pine, and Mondeaux. There are several localized but significant concentrations of glacial kettle lakes associated with end and recessional moraines (e.g., the Perkinstown, Bloomer, Winegar, Birchwood Lakes, and Valhalla/Marenisco Moraines.) In southern Ashland and Bayfield counties, the concentrations of lakes are associated with till plains or outwash over till. Lakes here are due to dense till holding up the water table. Rare lake types in the North Central Forest include marl and meromictic lakes.  Learn more from the chapter [PDF]

Current Landcover

Forests cover approximately 75% of this Ecological Landscape. The mesic northern hardwood forest is dominant, made up of sugar maple, basswood, and red maple, with some stands containing scattered hemlock, yellow birch, and/or white pine pockets. The aspen-birch forest type group is also abundant, followed by spruce-fir (most of the spruce-fir is lowland conifers on acid peat not upland "boreal" forest). Forested and non-forested wetland communities are common and widespread. These include Northern Wet-mesic Forest (dominated by either northern white cedar or black ash), Northern Wet Forest (acid conifer swamps dominated by black spruce and/or tamarack), non-forested acid peatlands (bogs, fens, and muskegs), alder thicket, sedge meadow, and marsh (including wild rice marshes) are widespread in the North Central Forest.  Learn more from the chapter [PDF]

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Socioeconomic Conditions
(based on data from Bayfield, Washburn, Rusk, Sawyer, Chippewa, Iron, Ashland, Price, Taylor, Lincoln, Langlade, Forest and Florence counties)

Population

244,782, 4.4% of the state total

Population Density

19 persons/ sq. mile

Per Capita Income

$26,738

Important Economic Sectors

Government, tourism-related, manufacturing (non-wood) and retail trade sectors in 2002 reflecting high government and tourism-related dependence. Although forestry does not have a large impact on the number of jobs it produces, it is the sector that has the largest impact on the natural resources in the Ecological Landscape.

Public Ownership

42% is publicly owned, mostly by federal, state or county governments. Federal ownership includes the Chequamegon-Nicolet National Forest. State ownership includes the 90,000 acre Flambeau River State Forest and several other large properties, including the Kimberly-Clark Wildlife Area. Counties in or partially within the North Central Forest with large County Forests include: Ashland, Bayfield, Chippewa, Florence, Forest, Iron, Langlade, Lincoln, Oneida, Price, Rusk, Sawyer, Taylor, and Washburn counties. A map showing public land ownership (county, state, and federal) and private lands enrolled in the Forest Tax Programs in this Ecological Landscape can be found at the end of this chapter.

Other Notable Ownerships

The Wisconsin Chapter of The Nature Conservancy (TNC) has several major projects in the North Central Forest, in northern Vilas County, and at Catherine Lake in Ashland-Iron counties. TNC has also partnered with the WDNR, the USFS, and various private groups on various research, land use planning, and protection projects, including one in the Pine-Popple Watershed (in part to remedy poorly sited or constructed stream crossings or culverts that act as barriers to the movement of aquatic life) in the eastern part of the Ecological Landscape. Native American lands include the Lac Courte Oreilles, Lac du Flambeau, and Potawatomi Reservations.

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Considerations for Planning & Management

One of the major considerations in the North Central Forest is clarification of the roles played by and ecological relationships among public, private, industrial, and tribal lands from a conservation, socioeconomic, and recreational perspectives. In recent years there has been documentation of widespread negative impacts to forests from: excessive deer browse; invasive earthworms, insects, plants and pathogens; divestitures of large private holdings (especially estates and industrial forests); increased parcelization; and the development of shoreline habitats. Other important factors to consider include: the potential implications of climate change; ecological impacts of increased biomass harvest; forest type conversions; forest simplification and homogenization; and the need to develop ecologically appropriate and economically viable restoration methods for mesic forests.  Learn more about management opportunities from the chapter [PDF]

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Species

Species of Greatest Conservation Need

The content for this page came from the Wisconsin Wildlife Action Plan

The following species are listed according to their probability of occurring in the North Central Forest Ecological Landscape, based on the findings in the Wisconsin Wildlife Action Plan.

Scores: 3 = "Significantly Associated," 2 = "Moderately Associated," and 1 = "Minimally Associated."
BirdsScore
American BitternBotaurus lentiginosus3
American WoodcockScolopax minor3
Bald EagleHaliaeetus leucocephalus3
Black-backed WoodpeckerPicoides arcticus3
Black-billed CuckooCoccyzus erythropthalmus3
Black-throated Blue WarblerDendroica caerulescens3
Boreal ChickadeePoecile hudsonica3
Canada WarblerWilsonia canadensis3
Golden-winged WarblerVermivora chrysoptera3
Least FlycatcherEmpidonax minimus3
Lesser ScaupAythya affinis3
Northern GoshawkAccipiter gentilis3
Northern HarrierCircus cyaneus3
Olive-sided FlycatcherContopus cooperi3
OspreyPandion haliaetus3
Red CrossbillLoxia curvirostra3
Red-shouldered HawkButeo lineatus3
Spruce GrouseFalcipennis canadensis3
Trumpeter SwanCygnus buccinator3
VeeryCatharus fuscescens3
Whip-poor-willCaprimulgus vociferus3
Wood ThrushHylocichla mustelina3
Black TernChlidonias niger2
BobolinkDolichonyx oryzivorus2
Brown ThrasherToxostoma rufum2
CanvasbackAythya valisineria2
Cerulean WarblerDendroica cerulea2
Connecticut WarblerOporornis agilis2
Rusty BlackbirdEuphagus carolinus2
Sharp-tailed GrouseTympanuchus phasianellus2
Solitary SandpiperTringa solitaria2
American Black DuckAnas rubripes1
American Golden PloverPluvialis dominica1
Blue-winged TealAnas discors1
DickcisselSpiza americana1
DunlinCalidris alpina1
Eastern MeadowlarkSturnella magna1
Field SparrowSpizella pusilla1
Grasshopper SparrowAmmodramus savannarum1
Henslow's SparrowAmmodramus henslowii1
Horned GrebePodiceps auritus1
Hudsonian GodwitLimosa haemastica1
Loggerhead ShrikeLanius ludovicianus1
Louisiana WaterthrushSeiurus motacilla1
Marbled GodwitLimosa fedoa1
Red-headed WoodpeckerMelanerpes erythrocephalus1
Short-billed DowitcherLimnodromus griseus1
Upland SandpiperBartramia longicauda1
Vesper SparrowPooecetes gramineus1
Western MeadowlarkSturnella neglecta1
WhimbrelNumenius phaeopus1
Willow FlycatcherEmpidonax traillii1
Yellow-billed CuckooCoccyzus americanus1

Scores: 3 = "Significantly Associated," 2 = "Moderately Associated," and 1 = "Minimally Associated."
FishScore
Gilt DarterPercina evides3
Lake SturgeonAcipenser fulvescens3
Longear SunfishLepomis megalotis3
Greater RedhorseMoxostoma valenciennesi2
Banded KillifishFundulus diaphanus1
KiyiCoregonus kiyi1
Least DarterEtheostoma microperca1
Pugnose ShinerNotropis anogenus1
Redside DaceClinostomus elongatus1
Shortjaw CiscoCoregonus zenithicus1

Scores: 3 = "Significantly Associated," 2 = "Moderately Associated," and 1 = "Minimally Associated."
Reptiles and AmphibiansScore
Boreal Chorus FrogPseudacris maculata3
Four-toed SalamanderHemidactylium scutatum3
Mink FrogRana septentrionalis3
MudpuppyNecturus maculosus2
Pickerel FrogRana palustris2

Scores: 3 = "Significantly Associated," 2 = "Moderately Associated," and 1 = "Minimally Associated."
MammalsScore
American MartenMartes americana3
Gray WolfCanis lupus3
Hoary BatLasiurus cinereus3
Northern Flying SquirrelGlaucomys sabrinus3
Silver-haired BatLasionycteris noctivagans3
Water ShrewSorex palustris3
Woodland Jumping MouseNapaeozapus insignis3
Eastern Red BatLasiurus borealis2
MooseAlces alces2
Northern Long-eared BatMyotis septentrionalis2

Community opportunities

Natural community management opportunities

The North Central Forest Ecological Landscape contains opportunities to manage for the following natural communities, based on the findings in the Wildlife Action Plan (originally presented by the Ecosystem Management Team).


Description of Terms Used to Define Opportunities for Protection, Restoration and/or Management of Natural Communities by Ecological Landscapes

Major
A major opportunity for sustaining the natural community in the Ecological Landscape exists, either because many significant occurrences of the natural community have been recorded in the landscape or major restoration activities are likely to be successful maintaining the community's composition, structure, and ecological function over a longer period of time.

Important
Although the natural community does not occur extensively or commonly in the Ecological Landscape, one to several occurrences do occur and are important in sustaining the community in the state. In some cases, important opportunities may exist because the natural community may be restricted to just one or a few Ecological Landscapes within the state and there may be a lack of opportunities elsewhere.

Present
The natural community occurs in the Ecological Landscape, but better management opportunities appear to exist in other parts of the state.

General opportunities

General management opportunities 1

The North Central Forest contains the best large-scale interior forest management opportunities in the state. There are opportunities to create or maintain large habitat patches, develop or re-establish greater connectivity between forest habitat patches and restore missing and diminished cover types. Restoring conifers to many hardwood forests is a major opportunity. Hemlock and yellow birch, once the dominant species in this landscape, are greatly reduced and declining. Both species are difficult to regenerate, so developing effective regeneration methods given deer herbivory challenges is a management opportunity.

Old forests are a rare and declining resource in Wisconsin. The North Central Forest offers excellent opportunities to manage areas for older forest within a context of outstanding aquatic features, intact and relatively undisturbed wetlands and vast public landholdings. Working forests could include areas with extended rotations, the development of old-growth forest characteristics and/or stands of "managed old-growth."

Wetlands are abundant here and include forested, shrub and herbaceous types. Collectively, wet-mesic forests, including Northern Wet-mesic Forest and Hardwood Swamp, are more common here than anywhere else in the state. Acid peatlands are common and widespread. Ephemeral Ponds are abundant and provide important habitat for numerous animals. Protecting the hydrology and integrity of the landscape's wetlands is a major opportunity.

Aquatic resources are in good condition compared to many areas elsewhere in the state. Water quality is high, sediment and pollutant loads are low, flow levels tend to follow normal patterns on many streams and the diversity of aquatic organisms is significant. Maintaining the existing high percentage of forest cover within watersheds is, arguably, the most critical factor in maintaining high water quality and supporting all of the aquatic species native to northern Wisconsin's lakes and streams.

Invasive species are, generally, less abundant here than in many other ecological landscapes, especially those in the southern half of the state. However, invasive species detections are increasing in this landscape. Controlling these species before they become abundant, as they have in many other parts of the state, is an important opportunity as both control efforts and costs are more manageable when problems are still localized.

There are good opportunities to maintain communities and habitats that are either especially well-represented here or rare elsewhere in the state. These include lowland forests dominated either by white cedar or black ash, acid peatlands, bedrock glades and moist cliffs. It should be possible to provide for the needs of the vast majority of plants and animals native to the North Central Forest, including the many rare species that have been documented.

1. The text presented here is a summarized version of a longer section developed for the Ecological Landscapes of Wisconsin Handbook.

LTAs

North Central Forest Landtype Associations

Landtype Associations (LTAs) are units of the National Hierarchical Framework of Ecological Units (NHFEU), a hierarchical ecological land classification system. LTAs are much smaller than Ecological Landscapes, ranging in size from 10,000 and 300,000 acres. In Wisconsin, they are usually based on glacial features like individual moraines or outwash plains. LTAs can be very useful for planning at finer scales within an Ecological Landscape.

The following are the LTAs associated with the North Central Forest Ecological Landscape. The North Central Forest LTA map [PDF] can be used to locate these LTAs. Clicking on an LTA in the list below will open a data table for that LTA in PDF format. Descriptions are included, where available.

Last Revised: January 23, 2012
Southwest Savanna Southern Lake Michigan Coastal Western Coulees and Ridges Southeast Glacial Plains Central Sand Hills Central Lake Michigan Coastal Central Sand Plains Northern Lake Michigan Coastal Northern Lake Michigan Coastal Northeast Sands Western Prairie North Central Forest Northern Highlands Northwest Lowlands Northwest Sands Northwest Lowlands Superior Coastal Plains Forest Transition