US Long-Term Ecological Research Network

NTL's zooplankton, phytoplancton, fish scale, dendy and pelagic tow sample archive is located in the University of Wisconsin Zoological Museum (UWZM):

Noland Zoology Building
250 N. Mills St. 

NTL's microbial sample archive is located at:

5525 Microbial Sciences Building
1550 Linden Drive

Contact Information:
  • Pam Montz, CFL Trout Lake Station, 608-890-4678,
  • Corinna Gries, CFL Hasler Lab, 608-890-3446,
  • Laura Halverson, UW Zoological Museum, 608-262-3766,
  • Trina McMahon, Microbial Sciences Building, 608-890-2836,

Description of Collections: The LTER samples include zooplankton, phytoplankton, fish scales, Dendys (invertebrates collected with a Hester-Dendy sampler), pelagic invertebrate tows, and macrophyte samples (to search the collection, please click on the respective links below): 

  • Zooplankton are wet samples, in formalin or ethanol, in 2 to 8 oz. jars in half-sized records boxes on open shelving.
  • Phytoplankton have traditionally been stored wet but, a conversion to microscope slide format (some pooled samples remain in wet storage) has begun. The wet samples are stored on open shelving; the slide samples are stored in one of the metal “Tensco” cabinets.
  • Fish scales are stored in small envelopes, organized by lake, year, and species in card catalog drawers. 
  • Dendys are wet samples, preserved in ethanol, in vials and jars. The samples are organized in records boxes on open shelving.
  • Pelagic invertebrate tows (vertical night tows) are wet samples in ethanol stored on open shelving.
  • Macrophyte samples are dried and stored in boxes on open shelving.
  • Microbial samples are stored on 0.2 um filters that were used to capture planktonic biomass from whole water at the time of sampling. The filters are stored at -80C inside 2.0 mL screw-cap tubes.

Loan procedures