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470 results returned

  1. Title: Data and Scripts for manuscript "Improving predictions of range expansion for invasive species using joint species distribution models and surrogate co-occurring species"

    Contributors:

    Summary: Click "Visit Source" to download CSV data. This data can be used to replicate the results from the manuscript "Improving predictions of range expansion for invasive species using joint species distribution models and surrogate co-occurring species". Included are R scripts and occurence datasets for running Generalized Boosted Models (GBM) species distribution models for the invasive species Cardamine impatiens, Celastrus orbiculatus, and Humulus japonicus. Also included are R scripts for building spatially explicit species co-occurrence matrices used for running joint species distribution models (specifically gjam models) in for plant communities in Minnesota based on the MN DNR plant releve dataset with a focus on incorporating the invasive species Cardamine impatiens, Celastrus orbiculatus, and Humulus japonicus as well as a case study for the native species Smilacina racemosa. The exact spatial location of each releve has been changed to a gridded position in order to protect the exact location. Raw releve data must be obtained from the MN DNR. The data includes occurrence records for Cardamine impatiens, Celastrus orbiculatus, Humulus japonicus, and Smilacina racemosa downloaded from EDDMaps on 7 Sept 2020. Also included are spatially explicit species co-occurrence presence/absences matrices for Cardamine impatiens, Celastrus orbiculatus, Humulus japonicus, and Smilacina racemosa.

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  2. Title: Climate-biome envelope model for the Western Great Lakes Region

    Contributors:

    Summary: Research Highlights: We modeled climate-biome envelopes at high resolution in the Western Great Lakes Region for recent and future time-periods. The projected biome shifts, in conjunction with heterogeneous distribution of protected land, may create both great challenges for conservation of particular ecosystems and novel conservation opportunities. Background and Objectives: Climate change this century will affect the distribution and relative abundance of ecological communities against a mostly static background of protected land. We developed a climate-biome envelope model using a priori climate-vegetation relationships for the Western Great Lakes Region (Minnesota, Wisconsin and Michigan USA and adjacent Ontario, Canada) to predict potential biomes and ecotones—boreal forest, mixed forest, temperate forest, prairie–forest border, and prairie—for a recent climate normal period (1979–2013) and future conditions (2061–2080). Materials and Methods: We analyzed six scenarios, two representative concentration pathways (RCP)—4.5 and 8.5, and three global climate models to represent cool, average, and warm scenarios to predict climate-biome envelopes for 2061–2080. To assess implications of the changes for conservation, we analyzed the amount of land with climate suited for each of the biomes and ecotones both region-wide and within protected areas, under current and future conditions. Results: Recent biome boundaries were accurately represented by the climate-biome envelope model. The modeled future conditions show at least a 96% loss in areas suitable for the boreal and mixed forest from the region, but likely gains in areas suitable for temperate forest, prairie–forest border, and prairie. The analysis also showed that protected areas in the region will most likely lose most or all of the area, 18,692 km2, currently climatically suitable for boreal forest. This would represent an enormous conservation loss. However, conversely, the area climatically suitable for prairie and prairie–forest border within protected areas would increase up to 12.5 times the currently suitable 1775 km2. Conclusions: These results suggest that retaining boreal forest in potential refugia where it currently exists and facilitating transition of some forests to prairie, oak savanna, and temperate forest should both be conservation priorities in the northern part of the region. Data included here are the R code used to process the publicly available CHELSA data (see publications for citation) into the biome-climate envelope product (as .R files and .txt files) and the climate-biome envelope product itself (as .tif files).

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  3. Title: Racial Covenants [Hennepin County, Minnesota] (1910-1955)

    Contributors:

    Summary: This data was compiled by the Mapping Prejudice Project and shows the location of racial covenants recorded in Hennepin County between 1910 and 1955. Racial covenants were legal clauses embedded in property records that restricted ownership and occupancy of land parcels based on race. These covenants dramatically reshaped the demographic landscape of Hennepin County in the first half of the twentieth century. In 1948, the United States Supreme Court ruled racial covenants to be legally unenforceable in the Shelly v. Kraemer decision. Racial covenants continued to be inserted into property records, however, prompting the Minnesota state legislature to outlaw the recording of new racial covenants in 1953. The same legislative body made covenants illegal in 1962. The practice was formally ended nationally with the passage of the Fair Housing Act in 1968.

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  4. Title: Twin Cities Historical Surface Waters Based on Original Public Land Survey Maps (1848 - 1858)

    Contributors:

    Summary: These shapefiles of lakes, streams, wetlands, river bottoms, and the Mississippi River represent the hydrological landscape of Minneapolis and St. Paul as recorded in the original public land survey conducted between 1848 and 1858. The features were digitized from scanned, georeferenced 1:24000 maps during the 2017 Faculty Research Sprint held at the University of Minnesota. Many streams and other hydrologic features that were present in the Twin Cities at the time of the original land survey were channelized, covered, or filled during the late 1800's. These features, however, still function as water conduits within the hydrology systems of urban water and have immense importance to the water regime in the Twin Cities. This data was generated as part of a larger "Lost Waters" research project - aiming to create a visible, physical representation of these waters in the current urban landscape.

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  5. Title: Military Airports, California, 2012

    Contributors:

    Summary: This point shapefile represents military airports in California. The attributes include the airport location, function class, ownership, and the link to the Federal Aviation Administration (FAA) site. The FAA website has airport detail information and master records and reports. This layer is part of a collection of GIS data created by the California Department of Transportation (Caltrans). This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. California Department of Transportation. (2012). Military Airports, California, 2012. California Department of Transportation. Available at http://purl.stanford.edu/sp628tx7863. None This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

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  6. Title: Lisbon, Portugal, 1785 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Plano geral da cidade de Lisboa em 1785, Franco. D. Milcent. It was published in [1785]. Scale [ca. 1:10,950]. Covers a portion of Lisbon, Portugal. The image inside the map neatline is georeferenced to the surface of the earth and fit to the European Datum 1950, UTM Zone 29N coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, drainage, built-up areas and selected buildings, fortification, ground cover, and more. Relief is shown by hachures. Includes index. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  7. Title: East and Central China, 1841 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Karte von China mit dessen Eintheilung in 18 Provinzen, nach den neuesten u. zuverlassigsten Materialien entworfen, gezeichnet und bearbeitet von J. B. Roost ; in Stein grawirt v. D. Grasmuller. It was published der liter. artist. Anstalt der L.G. Cotta'schen Buchhandlung in 1841. Scale 1:6,500,000. Covers East and Central China, and the Korean Peninsula. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Asia North Lambert Conformal Conic coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, roads, territorial and provincial boundaries, shoreline features, and more.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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  8. Title: Geologic map and cross section of Ohio

    Contributors:

    Summary: Includes color cross section. D. Pfannehecker. Scale 1:2,250,000.

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  9. Title: Gornopromyshlennaia karta Evropeĭskoĭ Rossīi : s ́pokazaniem' gornykh' zavodovʹ i miestorozhdenīĭ poleznykh' iskopaemykh' : izdanie redakshin "Gornoe di'lo v' Rossii."

    Contributors:

    Summary: Includes 3 ancillary maps.; Indexed.; Separated into sections and mounted on linen.; "Kartografi. zav. D. Rudneva Nov. per. d. 5 kb. 46." 146 x 132 centimeters Scale approximately 1:2,500,000 General Map Collection

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  10. Title: Post route map of the states of Michigan and Wisconsin: with adjacent parts of Ohio, Indiana, Illinois, Iowa, and Minnesota; designed and constructed under the orders of John A.J. Creswell and Giles A. Smith by W.L. Nicholson.

    Contributors:

    Summary: Prime meridian: Washington. Shows railroad lines. "Drawn by C.H. Poole. Engraved by D. McClelland." "The service on this diagram brought up to date of [April 1st, 1874]." Includes "General statistics," "Explanation of mail service," and table of distances. 1 map: hand color; 105 x 141 cm

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  11. Title: Map of the city of Washington : established as the permanent seat of the government of the United States of America

    Contributors:

    Summary: Shows block numbers, wards, and major buildings. Includes index to points of interest and inset "Map of the District of Columbia." 34 x 44 centimeters Scale approximately 1:21,750 City Maps

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  12. Title: A plat exhibiting the state of the surveys in the State of Florida, with references; D. McClelland, sc., Washington.

    Contributors:

    Summary: 1 map; 57 x 64 cm

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  13. Title: The state of Florida compiled in the Bureau of Topographical Engineers, from the best authorities; by J. Goldsborough Bruff; D. McClelland, sc., 1846.

    Contributors:

    Summary: Relief shown by hachures. Insets: Key West -- Mouths of the Suwanee River and the Cedar Keys -- General map of part of Florida included between Cedar Keys and St. John's River. Map indicates townships. 1 map; 105 x 101 cm

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  14. Title: Annapolis Royal Region, Nova Scotia, Canada, 1744 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Plan du Port Royal dans l'Accadie : appelle aujourd par les Anglois Annapolis Royal, par N.B. Ing. de la M. ; Dheulland sculp. It was published chez Rolin in 1744. Scale [ca. 1:70,000]. Map in French. Covers Annapolis Basin, Bay of Fundy and Annapolis Royal Region, Nova Scotia, Canada. The image inside the map neatline is georeferenced to the surface of the earth and fit to the UTM Zone 20N NAD83 (meters) coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows coastal features such as harbors, inlets, rocks, channels, points, coves, shoals, islands, and more. Includes also selected land features such as drainage, ground cover, fortifications, and more. Relief is shown by hachures. Depths shown by shading and soundings. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  15. Title: Quebec, Canada, 1744 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Plan du bassin de Quebec et de ses environs, par N. B. ingenieur de la marine ; D. Heulland, Sculp. It was published chez Rolin in 1744. Scale [ca 1:34,000]. Map in French. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator (UTM) Zone 19N NAD 1983 coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, drainage, built-up areas and selected buildings, ground cover, and more. Relief is shown by hachures. Depths are shown by shading. Includes index. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

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  16. Title: Hectacres Occupied by Pasturelands and Feed Crops

    Contributors:

    Summary: This multi-band raster data represents hectacres of pastureland that are currently occupied by feed crops. The pixel band ranges represent two estimated values: areas sourced from the lowest carbon areas and areas sourced from the highest carbon areas. The data is captured at a resolution of 5 arcminutes over the global domain. This data is released with an Attribution 4.0 International (CC BY 4.0) license. Users may cite this collection with https://doi.org/10.17609/q5pe-7r68/.

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  17. Title: Carbon Opportunity Cost of Present-Day Pasturelands and Animal Feed Crops

    Contributors:

    Summary: This multi-band raster data represents estimates of carbon opportunity cost. The data is captured at a resolution of 5 arcminutes over the global domain and is derived from data collected approximately over the past two decades (2000-2020). The pixel values measure estimates in tonnes of potential vegetation per hectare that are suppressed by pasturelands and present-day feed crops. The bands represent three estimates of carbon in potential vegetation: median, low (5th percentile), and high (95th percentile). This data is released with an Attribution 4.0 International (CC BY 4.0) license. Users may cite this collection with https://doi.org/10.17609/q5pe-7r68/.

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  18. Title: Sweden and Norway, 1803 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: General Karte von Schweden und Norwegen : nach den schwedischen Karten des Freyherrn von Hermelin und den dänischen des Conferenzraths Erichsen und Pontoppidan über Norwegen, neu entworfen, und nach den besten astronomischen Ortsbestimmungen berichtiget. It was published by: im Verlag der K.K. Priv. Schneider und Weigelschen Kunst- und Buchhandlung in 1803. Scale ca. 1:3,400,000. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Europe Lambert Conformal Conic (EPSG: 102014) coordinate system. All map features and collar and inset information are shown as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of geographies, originators, ground condition dates, scales, and map purposes.

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  19. Title: Reconstruction of North American Drainage Basins and River Discharge Since the Last Glacial Maximum)

    Contributors:

    Summary: Drainage basins and river discharges since the Last Glacial Maximum; released along with the article "Reconstruction of North American drainage basins and river discharge since the Last Glacial Maximum" to appear in the journal "Earth Surface Dynamics". Changes in major drainage basins and river discharges across North American since the Last Glacial Maximum from calculations based on five different reconstructions of past ice sheets and glacial-isostatic adjustment. River discharges are stored as Numpy binary files. Drainage basins are stored as shapefiles. Images and videos are available for each ice-sheet and glaical-isostatic adjustment model tested. These images show past topography and sea level, drainage basin extents as black lines, rivers with local flow greater than 1000 cubic meters per second as blue lines, and the footprint of the ice-sheet as a semitransparent light-colored region. Ages are in the folder and file names for the drainage basins and the images, and take the form, "0XXXXX', where this is the number of years before present (i.e. before 1950) that the rivers of North America are simulated to be structured as shown.

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  20. Title: Japan. Copyright 1892 by Appleton & Co. (insets) Kurile Islands; Tokyo. (to accompany) The Library Atlas Of Modern Geography ... New York, D. Appleton And Company 1892. (on upper margin) Japan 36 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced image of a map of Tokyo created in 1892. The original map appears in "The Library Atlas Of Modern Geography." The historic map layers in the Google Earth Rumsey Map Collection have been selected by David Rumsey from his large collection of historical maps, as well as some from other collections with which he collaborates. All the maps contain rich information about the past and represent a sampling of time periods, scales, and cartographic art, resulting in visual history stories that only old maps can tell. Each map has been georeferenced by Rumsey, thus creating unique digital map images that allow the old maps to appear in their correct places on the modern globe. Some of the maps fit perfectly in their modern spaces, while othersgenerally earlier period mapsreveal interesting geographical misconceptions of their time. Cultural features on the maps can be compared to the modern satellite views using the slider bars to adjust transparency. The result is an exploration of time as well as space, a marriage of historic cartographic masterpieces with innovative contemporary software tools.

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