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  • North Temperate Lakes LTER: Chlorophyll - Madison Lakes Area 1995 - current
  • NTL LTER Lead PI; Center for Limnology
    NTL LTER
  • 2012
  • Center for Limnology and NTL LTER. 2013. North Temperate Lakes LTER: Chlorophyll - Madison Lakes Area 1995 - current ver 8. Environmental Data Initiative. https://doi.org/10.6073/pasta/817558ac483d520c1cb1af4ff0d2ab76 (Accessed 2025-07-25).
  • Chlorophyll is measured at our permanent sampling station in the deepest part of the lake. Chlorophyll samples are collected from the four primary study lakes in the Madison area (Lakes Mendota, Monona, and Wingra and Fish Lake) at integrated depths and discrete depths for spectrophotometric analysis and fluorometric analysis. Due to a change in instruments starting in 2002 and lasting through 2007, chlorophyll analyses for the southern lakes had an uncorrectable bias, and are not included in this dataset.  Analyses since then (2008 onward) have been determined to not have this bias. Sampling Frequency: bi-weekly during ice-free season from late March or early April through early September, then every 4 weeks through late November; sampling is conducted usually once during the winter (depending on ice conditions). Number of sites: 4

  • N: 43.298      S: 43.045      E: -89.325      W: -89.66
  • Data Policies Copyright Board of Regents, University of Wisconsin, Madison. This information is released to the public and may be used for academic, educational, or commercial purposes subject to the following restrictions: The Data User must realize that these data sets are being actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the NTL lead Principal Investigator, leadpi@lter.limnology.wisc.edu, to check on other uses of the data. Where appropriate, the Data User may be encouraged to consider collaboration and/or co-authorship with original investigators. The Data User must realize that the data may be misinterpreted if taken out of context. We request that you provide the NTL lead Principal Investigator, ATTN: Data Access, Center for Limnology, University of Wisconsin-Madison, 680 North Park St., Madison, WI 53706 with a copy of any manuscript using the data so that it may be reviewed and comments provided on the presentation of our data. The Data User must acknowledge use of the data by an appropriate citation (see Citation) of the NTL-LTER database. A generic citation for our databases is: name of data set, North Temperate Lakes Long Term Ecological Research program, NSF, contact person for data set, Center for Limnology, University of Wisconsin-Madison. The data set name and contact person for each data set can be found in the metadata header of the online data sets. The Data User must send two reprints of any publications resulting from use of the data to the address above. We would like to include such manuscripts in our LTER publications list. The Data User must not redistribute original data and documentation without permission from Emily Stanley, lead Principal Investigator, (ehstanley@wisc.edu). While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The North Temperate Lakes LTER shall not be liable for damages resulting from any use or misinterpretation of data sets. Data users should be aware that we periodically update data sets. Our goal is to release all long term data associated with core research areas within 2 years of collection. These data and accompanying metadata will be available for download from the NTL-LTER web site. By using these data, the Data User agrees to abide by the terms of this agreement. Thank you for your cooperation.
  • https://doi.org/10.6073/pasta/817558ac483d520c1cb1af4ff0d2ab76
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EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

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