Landscape Position Project: Benthic Invertebrate Abundance

• Format: Dataset
• Language: unknown
• Published: North Temperate Lakes LTERCenter for Limnology680 N Park [e-mail] 2011
• Subjects: North Temperate Lakes - LTER; species richness; lake ion concentration; benthic macroinvertebrates; benthic; macroinvertebrates; species abundance; Stearns; Crooked Lake; Heart Lake; Round Lake; Rice Lake; Lake Island; Boulder Lake; Kathleen Lake; Contour Lake; Little Crooked Lake; Lynx
• Online Access: http://hdl.handle.net/10255/dryad.14824; http://metacat.lternet.edu/knb/metacat/knb-lter-ntl.96.4/xml

Benthic invertebrate assemblages of 32 lakes were surveyed as part of the Landscape Position Project. We used modified Hester-Dendy colonization substrates to sample benthic invertebrate communities. Each sampling device consisted of a 3"x3" top plate, alternating layers of course and fine mesh, a ''choreboy'' commercial scrubbing puff, alternating layers of coarse (6.35 mm) and fine (3.18 mm) black plastic mesh, and a 3"x3" bottom plate (see http://limnosun.limnology.wisc.edu/dendy.html for further description). Two Hester-Dendy samplers were set at a depth of one meter on each of three substrate types (cobble, sand and silt) within each lake for four weeks in late June through late July in either 1998 or 1999. Within each lake, areas of different substrate types were identified using WI-DNR depth contour lake maps, and substrate type was verified by direct observation. Different substrates were sampled to account for invertebrate associations with specific substrate characteristics.Lake order was determined using a modification of the method of Riera et al. (2000). Lake order is a numerical surrogate for groundwater influx and hydrological position along a drainage network, with the highest number indicating the lake lowest in a watershed. Riera, Joan L., John J. Magnuson, Tim K. Kratz, and Katherine E. Webster. 2000. A geomorphic template for the analysis of lake districts applied to Northern Highland Lake District, Wisconsin, U.S.A. Freshwater Biology 43:301-18.Sampling Frequency: one survey on each lake in late June through late July of 1998 or 1999Number of sites: 32