Tara Kieninger (ed.), Illinois Natural Heritage Database Progr, 2006, Nature Preserves, Land and Water Reserves, and Natural Heritage Landmarks in Illinois: Illinois Department of Natural Resources, Springfield, IL USA.
This is a Vector data set. It contains the following vector data types (SDTS terminology):
The map projection used is Lambert Conformal Conic.
Planar coordinates are encoded using Coordinate pair
Planar coordinates are specified in Feet
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 20925832.1618739.
The flattening of the ellipsoid used is 1/294.98.
These data are maintained and utilized by the Illinois Department of Natural Resources in order to provide current biodiversity and conservation information to assist with environmental review, natural resource management, conservation planning, biological and ecological research, land acquisition, and general scientific reference. These data are appropriate for use on local and regional thematic analysis within Illinois.
Person who carried out this activity:
Data sources produced in this process:
Attribute information is based on upon 1) information provided to the Natural Heritage Database Program, 2) values automatically assigned by, and 3) values selected by database program staff. Endangered and threatened species locations are mapped by one staff member and then quality controlled by another staff member. Some attributes are also compared periodically against a master set of attribute values. Attribute accuracy is obtained by comparing manual hard copy and electronic plots of information as submitted to the database to the resulting digital shape. Occasionally, digital data is based on the submission of GPS coordinates. In all cases, the digital shape is expanded, either while digitizing or through the use of a buffer, to account for poor incoming data, vague descriptions, or error associated with GPS to create a shape large enough to ensure that the reported element is contained. An assessment of the accuracy of attributes captured in the field by the observer has not been completed.
These data are dependent on the research and observations of many scientists and institutions and reflect our current state of knowledge. Data are acquired from various sources, with varying levels of accuracy, and are continually updated and revised. Many areas have never been surveyed and the absence of data in any particular geographic area does not necessarily mean that species, communities, or other resources of concern are not present. This data set includes information regarding threatened and endangered (T&E) species, significant natural communities, and other natural resources in Illinois both received and entered into Biotics 4 by the Illinois Natural Heritage Database Program at the time of publication. T&E bird data is only included in the database when there is reasonable evidence of breeding, except in the case of wintering bald eagles and a few other roosting occurrences. Natural communities are only included in the database if they meet a minimum set of criteria as defined by the Illinois Natural Areas Inventory (INAI). Criteria include size, quality, and relative rarity of the community in a particular natural division of the state. The database only tracks species listed as threatened or endangered by the Illinois Endangered Species Protection Board. INHD also has a "backlog" of data, essentially hard copy and digital field forms that have not been processed and added to the digital data set. These data should not be regarded as a substitute for on-site surveys required for environmental assessments. If you notice significant data gaps for a certain species or geographic area, please submit data or send us a reference.
All element occurrence records are mapped as accurately as reported. Element occurrence (EO) locations are all mapped in GIS using the Biotics Mapper tool (see process steps for information about mapping in this system). Spatial data is updated and reviewed on an ongoing basis.
Are there legal restrictions on access or use of the data?
- Heritage data is only for the intended use of the individual or organization who requested it. This database and accompanying files may not be distributed in any way without the consent of the Illinois Department of Natural Resources' Illinois Natural Heritage Database (INHD) Program. Use of the data is subject to the terms of a Data License Agreement (DLA) or Memorandum of Understanding (MOU) developed between the Natural Heritage Database Program and the information requestor. Hence, the enclosed data are CONFIDENTIAL AND SHOULD BE TREATED AS SUCH. Data provided will be limited to the minimal geographic scale needed, may only be used for the project specified in the DLA or MOU, and is time limited. The user must comply with any additional criteria specified in the DLA or MOU. If other individuals or agencies are interested in these data, contact INHD's Program Manager directly at (217)782-2685.
- These data are strictly "on loan" and should be considered "works in progress". Publication, reproduction, or redistribution of the data set or products derived therefrom to parties not covered in the DLA or MOU is expressly forbidden without the consent of the Illinois Department of Natural Resources' (IDNR) Natural Heritage Database (INHD)Program. In any publication that is approved, licensee agrees to cite the source of the data as such: Illinois Natural Heritage Database Program. 2005. Element Occurrence Data for Endangered Species and Rare Resources in Illinois. Biodiversity Tracking and Conservation System (Biotics). Department of Natural Resources, State of Illinois. Data exported 05/05/2005. The element occurrence data is a product and property of the Illinois Natural Heritage Database Program, Illinois Department of Natural Resources. INHD data are supplemental and care should be taken in interpreting these data. INHD data include spatial, tabular, and narrative components. While element locations are defined by spatial components, the tabular and narrative components define quality and usability of the EO record. To ensure accurate application of the INHD data, tabular and narrative components must be evaluated in conjunction with spatial components. The user may also need to consult with the INHD program for clarification. Failure to do so constitutes misuse of the data. Data users must ensure that all data products present the data in a way that will not compromise any species populations; therefore the data users shall: (1) not display specific locational data for any endangered or threatened species, but shall at most indicate that there is a sensitive species at a specific area, or (2) randomize within a USGS Quadrangle the precise location of an endangered or threatened species, or (3) for an endangered or threatened species occurrence with a precise location, the data users should display the area at a scale at which the user cannot tell where the species is located on the ground. Users should obtain permission from the INHD Program before displaying endangered and threatened species data in such a way that individual species locations can be pinpointed. Upon expiration of the DLA or MOU, the user will deleted the dataset from their active computer system(s) and shall not generate new maps, risk assessments, data analyses, or other products after that date. If all parties agree, the user has the option to extend use of the dataset by extending the term of or renewing the DLA or MOU and receiving an updated version of the dataset from the INHD Program. Receipt of this data does not negate IDNR's Endangered Species Consulation process. These data should not be regarded as substitute for on-site surveys required or environmental assessments. Absence of evidence is NOT evidence of absence. Absence of any data does not mean the other resources of special concern do not occur, but rather INHD has not received and/or entered this information in order to document its presence. The data contained herein are provided on an as-is, as-available basis without warranties of any kind, expressed or implied. INHD and the Illinois Department of Natural Resources expressly disclaim any warranty that the data are error-free or current as of the date supplied. Receipt of data does not negate IDNR's endangered species consultation process, where applicable. User should be aware that the electronic portion of the data is only a representation of the more extensive information available in manual files. IDNR cannot guarantee the accuracy or completeness of the data set, rather than can only summarize the information known to the INHD Program at the time of the agreement or understanding.
Nature Preserves, Land and Water Reserves, and Natural Heritage Landmarks
Users must assume responsibility to determine the appropriate use of the data. This data set is not meant to be a definitive statement of presence or absence of a species or element in a particular area. This data is not a substitute for field surveys or investigations. The data is dynamic and continually changing. It is the responsibility of the user to request regular updates to the information on a regular basis, determined by the type of project in which it is being used. Use of this data does not negate IDNR's endangered species consultation process.
Illinois Natural Resources Geospatial Data ClearinghouseGenerated by mp version 2.8.11 on Mon Jan 29 15:19:37 2007