Water Samples integrated over Depth (Phytoplankton Populations) This section provides the content of an 1978 Technical Report by Shearer (no longer in print) describing two samplers designed to collect water samples integrated over depth. The Integrating Sampler (described first) has (since 1974) been the standard sampler at the ELA for enumerating and identifying phytoplanktonic populations and estimating primary productivity of these communities. It has been recommended for use by those following Canadian Ecological Monitoring and Assessment Network (EMAN) protocols for phytoplankton.
Photosynthesis Calculations integrated over Time and Depth (Phytoplankton Populations) This section provides the updated content of an 1990 Technical Report by Fee (no longer in print) describing programs and procedures designed to calculate the in situ photosynthetic carbon assimilation (primary production) by phytoplankton. The described programs and procedures permit researchers to estimate in situ phytoplankton productivity according to a numerical model developed by Fee and refined over two decades at the ELA and other sites. This model utilizes measurements of carbon uptake versus irradiance data from an artificial light incubator and in situ measurements of irradiances. It produces realistic estimates of photosynthetic carbon uptake in lakes over time and over depth.
Sampling of Phytoplankton Populations (ELA Protocol adopted by EMAN) *
Sampling of Zooplankton Populations (ELA Protocol adopted by EMAN) *
Sampling of Zoobenthic Invertebrate Populations (ELA Protocol adopted by EMAN) *
* EMAN is the Canadian Ecological Monitoring and Assessment Network, coordinated by Environment Canada. These protocols, based on ELA methodologies, have been adopted by EMAN for standardized monitoring across Canada.
