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14 results for “Northern Highland Lake District”
North Temperate Lakes LTER Northern Highland Lake District Study Lakes
The seven NTL-LTER primary study lakes in the Trout Lake Region include Allequash Lake, Big Muskellunge Lake, Crystal Bog, Crystal Lake, Sparkling Lake, Trout Lake, and Trout Bog. This data set provides locations for these lakes, as well as attributes including the lake names, NTL-LTER lake identification codes, Water Body Identification Codes (WBICs), and other fields that may be used to reference individual lakes.
North Temperate Lakes LTER Northern Highland Lake District Coarse Woody Debris Logs
Coarse woody debris (CWD) is an important, but often neglected, component of lake ecosystems. It is ecologically valuable because it creates littoral habitat complexity but it is susceptible to manipulation by riparian process, in particular removal by property owners. The objective of this study is to determine the spatial scales at which human and environmental factors contribute to coarse woody debris input and output dynamics. Coarse woody debris, boat docks, and riparian trees (with the potential of becoming CWD) around the five lakes of the NTL-LTER site (Trout Lake, Allequash Lake (north basin), Sparkling Lake, Crystal Lake, and Big Muskellunge Lake) were measured in 1996 and 1997. CWD was defined as logs: greater than 2 m length, greater than 15 cm diameter, mostly submersed in lake, less than 25 m from shore, and less than 2 m water depth. Locations were determined as average of greater than 30 dGPS positions. Numbered aluminum tags were attached to each log to facilitate the long-term study of CWD. Return visits to Sparkling and Trout Lakes in 1997 found some tags had been removed by ice or vandals. Heavier tags were attached to these logs. The 1997 re-survey and tag check was not complete.
North Temperate Lakes LTER Northern Highland Lake District Coarse Woody Debris Trees
Coarse woody debris (CWD) is an important, but often neglected, component of lake ecosystems. It is ecologically valuable because it creates littoral habitat complexity but it is susceptible to manipulation by riparian process, in particular removal by property owners. The objective of this study is to determine the spatial scales at which human and environmental factors contribute to coarse woody debris input and output dynamics. Coarse woody debris, boat docks, and riparian trees (with the potential of becoming CWD) around the five lakes of the NTL-LTER site (Trout Lake, Allequash Lake (north basin), Sparkling Lake, Crystal Lake, and Big Muskellunge Lake) were measured in 1996 and 1997. Riparian trees with the potential of becoming CWD were measured in Feb. 1997. Locations were determined by differential GPS (greater than 10 points per tree) and diameters were measured as diameter-at-breast-height (dbh) using a "cruising stick" according to the Scribner 78 scale (Philip 1994). Substantial snow cover made nominal "breast height" approximately 200 cm. The entire shores of Crystal and Sparkling Lakes were sampled. Shorelines on the other lakes were selected to represent developed and undeveloped conditions. Approximately 31 percent% (19/61 km) of the total shoreline of the five lakes was surveyed.
North Temperate Lakes LTER Northern Highland Lake District Coarse Woody Debris Shoreline Development Index
Coarse woody debris (CWD) is an important, but often neglected, component of lake ecosystems. It is ecologically valuable because it creates littoral habitat complexity but it is susceptible to manipulation by riparian process, in particular removal by property owners. The objective of this study is to determine the spatial scales at which human and environmental factors contribute to coarse woody debris input and output dynamics. Coarse woody debris, boat docks, and riparian trees (with the potential of becoming CWD) around the five lakes of the NTL-LTER site (Trout Lake, Allequash Lake (north basin), Sparkling Lake, Crystal Lake, and Big Muskellunge Lake) were measured in 1996 and 1997. Shorelines were characterized using a qualitative shoreline development index (SDI). The index included: (1) developed and devoid of riparian trees (i.e. lawn, boat launch), (2) few widely spaced trees, (3) some riparian trees and some understory, (4) substantial forest cover, and (5) undeveloped and heavily forested. All 5 lakes were surveyed in June/July 1996. Endpoint positions were determined by greater than 30 dGPS points. Shoreline data were subsequently divided into 10 m segments.
North Temperate Lakes LTER Northern Highland Lake District Coarse Woody Debris Docks
Coarse woody debris (CWD) is an important, but often neglected, component of lake ecosystems. It is ecologically valuable because it creates littoral habitat complexity but it is susceptible to manipulation by riparian process, in particular removal by property owners. The objective of this study is to determine the spatial scales at which human and environmental factors contribute to coarse woody debris input and output dynamics. Coarse woody debris, boat docks, and riparian trees (with the potential of becoming CWD) around the five lakes of the NTL-LTER site (Trout Lake, Allequash Lake (north basin), Sparkling Lake, Crystal Lake, and Big Muskellunge Lake) were measured in 1996 and 1997. Boat docks were located on all 5 lakes. Docks were verified in 1997 using digital orthophotos. GPS positions were adjusted to coincide with the photos. Many of the docks were photographed with a digital camera.
North Temperate Lakes LTER Northern Highland Lake District Land Use - Land Cover 1930s
Land use/land cover was interpreted from historical aerial photographs for riparian buffer zones surrounding 50 lakes in Vilas County, Wisconsin. Photography from the 1930s, 1960s, and 1990s were interpreted, resulting in land use/land cover data for three time periods.
North Temperate Lakes LTER Northern Highland Lake District Land Use - Land Cover 1960s
Land use/land cover was interpreted from historical aerial photographs for riparian buffer zones surrounding 50 lakes in Vilas County, Wisconsin. Photography from the 1930s, 1960s, and 1990s were interpreted, resulting in land use/land cover data for three time periods.
North Temperate Lakes LTER Northern Highland Lake District Land Use - Land Cover 1990s
Land use/land cover was interpreted from historical aerial photographs for riparian buffer zones surrounding 50 lakes in Vilas County, Wisconsin. Photography from the 1930s, 1960s, and 1990s were interpreted, resulting in land use/land cover data for three time periods.
North Temperate Lakes LTER Northern Highland Lake District Watersheds
Watershed boundaries for 52 individual lakes in the NTL-LTER Northern Highland Lake District, merged into a single GIS layer.
North Temperate Lakes LTER Northern Highland Lake District Wetlands
Wetlands boundaries and type codes, from the first version of the Wisconsin Wetlands Inventory (WWI). NOTE: Due to license restrictions, please contact NTL Information Management for access.
North Temperate Lakes LTER Northern Highland Lake District Wildland Urban Interface
The Wildland-Urban Interface (WUI) is the area where houses meet or intermingle with undeveloped wildland vegetation. This makes the WUI a focal area for human-environment conflicts such as wildland fires, habitat fragmentation, invasive species, and biodiversity decline. Using geographic information systems (GIS), we integrated U.S. Census and USGS National Land Cover Data, to map the Federal Register definition of WUI (Federal Register 66:751, 2001). These data are useful within a GIS for mapping and analysis at national, state, and local levels.
North Temperate Lakes LTER Northern Highland Lake District Census 1990-2000
This data set contains population and housing data from the 1990 census and the 2000 census for the Northern Highland Lake District (aka Trout Lake Region) of northern Wisconsin.
North Temperate Lakes LTER Northern Highland Lake District Boundary
This data set defines the spatial extent of the Northern Highland Lake District (aka Trout Lake Region).
North Temperate Lakes LTER Northern Highland Lake District Bathymetry
This data set represents the bathymetry of the seven NTL-LTER primary study lakes in the Northern Highland Lake District (aka Trout Lake Region). Bathymetry is encoded as vector contours with a varying contour interval depending on the depth of the lake.
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