Includes bibliographical references and index.

Molecular ecology of aquatic communities: reflections and future directions / J.P. Zehr & M.A. Voytek -- Plasmid ecology of marine sediment microbial communities / P.A. Sobecky -- Use of the polymerase chain reaction and denaturing gradient gel electrophoresis to study diversity in natural virus communities / S.M. Short & C.A. Suttle -- Flow cytometry in molecular aquatic ecology / J.L. Collier & L. Campbell -- Distribution of microbial assemblages in the Central Arctic Ocean Basin studied by PCR/DGGE: analysis of a large data set / V.C. Ferrari & J.T. Hollibaugh -- Bacterial populations in replicate marine enrichment cultures: assessing variablity in abundance using 16S rRNA-based probes / J.M. Gonzalez, R.E. Hodson & M.A. Moran -- Diversity of bacterial communities in Adirondack lakes: do species assemblages reflect lake water chemistry? / B.A. Methe & J.P. Zehr -- New insights on old bacteria: diversity and function of morphologically conspicuous sulfur bacteria in aquatic systems / N.D. Gray & I.M. Head -- The distribution and relative abundance of ammonia-oxidizing bacteria in lakes of the McMurdo Dry Valley, Antarctica / M.A. Voytek, J.C. Priscu & B.B. Ward -- Microscopic detection of the toluene dioxygenase gene and its expression inside bacterial cells in seawater using prokaryotic in situ PCR / F. Chen, W.A. Dustman & R.E. Hodson -- Variability in bacterial community structure during upwelling in the coastal ocean / L.J. Kerkof, ... {et al.} -- Application of molecular techniques to addressing the role of P as a key effector in marine ecosystems / D.J. Scanlan & W.H. Wilson -- Immunological and molecular probes to detect phytoplankton responses to environmental stress in nature / J. La Roche, R.M.L. McKay & P. Boyd -- Spatial scale and the diversity of benthic cyanobacteria and datoms in salina / U. Nubel, ... {et al.} -- A rapid method to score plastic haplotypes in red seaweeds and its use in determining parental inheritance of plastids in the red alga Bostrychia (Ceramiales) / G.C. Zuccarello, ... {et al.} -- Protistan community structure: molecular approaches for answering ecological questions / D.A. Caron, ... {et al.} -- Molecular and demographic measures of arsenic stress in Daphnia pulex / C.Y. Chen, ... {et al.} -- Taxonomic and systematic assessment of planktonic copepods using mitochondrial COI sequence variation and competitive, species-specific PCR / A. Bucklin, ... {et al.} -- Ecological implications of molecular biomarkers: assaying sub-lethal stress in the midge Chironomus tentans using heat shock protein 70 (HSP-70) expression / N.K. Karouna-Renier & J.P. Zehr -- RNA-DNA ratio and other nucleic acid-based indicators for growth and condition of marine fishes / L. Buckley, E. Caldarone & T.-L. Ong.