00000nam 2200000za 4500 9.612379 CaOODSP 20250522105501 ta 150406|1995||||xxc||||| f|0| 0 eng d 0-662-23559-2 1192-3571 CaOODSP eng n-cn--- R71-49/3-56E Northern River Basins Study (Canada)‏. Long-term trends in ecosystem health : quantitative analysis of river benthic invertebrate communities, Peace and Athabasca Rivers / by Garry J. Scrimgeour et al. Edmonton - Alberta : Northern River Basins Study 1995. xv, 175p. : graphs, maps, references, tables ; 28 cm. + Appendices 2 to 47 [2 diskettes, Quattro Pro for Windows]. Northern River Basins Study project report 1192-3571 No. 56 "This project assessed the long-term trends in ecosystem health of the Peace and Athabasca rivers by evaluating changes in the composition of invertebrate communities in relation to effluent loading. Existing long-term data sets for benthic invertebrates were compiled and their sampling procedures reviewed for deficiencies. Where the sampling procedures were sufficiently similar, quantitative statistical analyses (e.g., time series analyses) was performed on the data to determine whether patterns in benthic community structure were consistent with those predicted impacts from point-source inputs."--Study perspective. Issued also in electronic format. This project assessed the long-term trends in ecosystem health of the Peace and Athabasca rivers by evaluating changes in the composition of invertebrate communities in relation to effluent loading. Existing long-term data sets for benthic invertebrates were compiled and their sampling procedures reviewed for deficiencies. Where the sampling procedures were sufficiently similar, quantitative statistical analyses (e.g., time series analyses) was performed on the data to determine whether patterns in benthic community structure were consistent with those predicted impacts from point-source inputs.--Study perspective Ring binding 96-07 1996-02-16 Marine biology gcpds Scrimgeour, Garry J. Long-term trends in ecosystem health : (CaOODSP)9.951292 Northern River Basins Study project report, 1192-3571 No. 56 (CaOODSP)9.514881 Project 2616-C1