Realm: Freshwater
Climate: Temperate
Biome: Large lake ecosystems
Central latitude: 43.627777
Central longitude: -77.833696
Duration: 2 years, from 2008 to 2013
757 records
54 distinct species
Across the time series
Tubificida is the most frequently occurring species
Methods
Note BioTIME managers: these data are a subset of the Density data for Lake Ontario benthic invertebrate assemblages from 1964 to 2018. The datsets contains records sampled with equivalent methods in years 2008 and 2013.Benthos samples were collected at stations located along multiple north-south transects of the binational Lake Ontario Lower Aquatic Food Web Study (LOLA) following 1990, 1995, and 2003 designs (Dermott and Geminiuc 2003, Watkins et al. 2007). Forty-four stations were sampled in August and three more stations in September 2008 on the CCGS Limnos, and four stations were visited in September 2009 on the R/V Lake Guardian. At each station, three replicates were taken with a Ponar grab (0.048 m2), pooled into a single sample, elutriated using a nylon sleeve with a 500-?m opening, and preserved in 5% formalin (Birkett et al. 2015). Samples in 2013 were collected in July and August from a total of 45 stations of which 37 were also sampled in 2008. At each station, samples were collected in triplicate with a Ponar grab (0.048 m2), washed through a 500-?m net, and preserved separately in 5 % buffered formalin (Nalepa and Baldridge 2016). Abundance is the the average density (individuals/m2) of individuals of each taxon found at each station (as average of all replicates collected at this station).
Citation(s)