CONTENTS OF VOLUME 51 Volume 51 No. 1-2 June 1998 MONITORING ECOLOGICAL CONDITION AT REGIONAL SCALES Proceedings of the Third Symposium on the Environmental Monitoring and Assessment Program (EMAP), Albany, NY, U.S.A., April 8—11, 1997 G. VEITH / Preface D. PRYOR, R. BIERBAUM and J. MELILLO/ Environmental Monitoring and Research Initiative: A Priority Activity for the Committee on Environ- mental and Natural Resources S.L. LASKOWSKI and F.W. KUTZ/ Environmental Data in Decision Making in EPA Regional Offices W.S. FISHER / Development and Validation of Ecological Indicators: An ORD Approach R.S. STEMBERGER and E.K. MILLER / A Zooplankton-N:P-Ratio Indicator for Lakes F.B. TAUB and C.D. WISEMAN / Implications of Seasonal and Regional Abundance Patterns of Daphnia on Surface Water Monitoring and Assessment C.O. YODER and E.T. RANKIN / The Role of Biological Indicators in a State Water Quality Management Process N. ROTH, M. SOUTHERLAND, J. CHAILLOU, R. KLAUDA, P. KAZYAK, S. STRANKO, S. WEISBERG, L. HALL, JR. and R. MORGAN II / Maryland Biological Stream Survey: Development of a Fish Index of Biotic Integrity 89-106 R.J. STEVENSON / Diatom Indicators of Stream and Wetland Stressors in a Risk Management Framework 107-118 D.H. WARDROP and R.P. BROOKS / The Occurrence and Impact of Sedi- mentation in Central Pennsylvania Wetlands 119-130 Environmental Monitoring and Assessment 51: 707-710, 1998. 708 R.P. BROOKS, T.J. O°;CONNELL, D.H. WARDROP and L.E. JACKSON / Towards a Regional Index of Biological Integrity: The Example of Forested Riparian Ecosystems 131-143 T.J. O°;CONNELL, L.E. JACKSON and R.P. BROOKS / A Bird Community Index of Biotic Integrity for the Mid-Atlantic Highlands 145-156 W.E. SHARPE and M.C. DEMCHIK / Acid Runoff Caused Fish Loss as an Early Warning of Forest Decline 157-162 M.G. GLENN, S.L. WEBB and M.S. COLE/ Forest Integrity at Anthropogenic Edges: Air Pollution Disrupts Bioindicators 163-169 D.J. RAPPORT, W.G. WHITFORD and M. HILDEN / Common Patterns of Ecosystem Breakdown under Stress 171-178 W.G. WHITFORD, A.G. DE SOYZA, J.W. VAN ZEE, J.E. HERRICK and K.M. HAVSTAD / Vegetation, Soil, and Animal Indicators of Range- land Health M.S. NASH, W.G. WHITFORD, J. VAN ZEE and K. HAVSTAD / Moni- toring Changes in Stressed Ecosystems Using Spatial Patterns of Ant Communities 201-210 J.H. LANDSBERG, B.A. BLAKESLEY, R.O. REESE, G. McRAE and P.R. FORSTCHEN / Parasites of Fish as Indicators of Environmental Stress 211-232 G. McRAE, D.K. CAMP, W.G. LYONS and T.L. DIX / Relating Benthic Infaunal Community Structure to Environmental Variables in Estuaries Using Nonmetric Multidimensional Scaling and Similarity Analysis A.H. RINGWOOD and C.J. KEPPLER / Seed Clam Growth: An Alterna- tive Sediment Bioassay Developed During EMAP in the Carolinian Province 247-257 W.R. DAVIS, A.F.J. DRAXLER, J.F. PAUL and J.J. VITALIANO / Benthic Biological Processes and Ey as a Basis for a Benthic Index 259-268 J.F. PAUL, C.J. STROBEL, B.D. MELZIAN, J.A. KIDDON, J.S. LATIMER, D.E. CAMPBELL and D.J. COBB / State of the Estuaries in the Mid- Atlantic Region of the United States 269-284 K.S. PRICE / A Framework for a Delaware Inland Bays Environmental Classification 285-298 R. KLAUDA, P. KAZYAK, S. STRANKO, M. SOUTHERLAND, N. ROTH and J. CHAILLOU / Maryland Biological Stream Survey: A State Agency Program to Assess the Impact of Anthropogenic Stresses on Stream Habitat Quality and Biota 299-316 CONTENTS OF VOLUME 51 A.S. HELLKAMP, S.R. SHAFER, C.L. CAMPBELL, J.M. BAY, D.A. FIS- CUS, G.R. HESS, B.F. McQUAID, M.J. MUNSTER, G.L. OLSON, S.L. PECK, K.N. EASTERLING, K. SIDIK and M.B. TOOLEY / Assessment of the Condition of Agricultural Lands in Five Mid-Atlantic States 317-324 L.E. JACKSON and M.P. GANT / An Interactive, Spatial Inventory of Envi- ronmental Data in the Mid-Atlantic Region 325-329 J.L. HYLAND, T.R. SNOOTS and W.L. BALTHIS / Sediment Quality of Estuaries in the Southeastern U.S. 331-343 J. WHITE and G. MERRITT / Evaluation of R-EEMAP Techniques for the Measurement of Ecological Integrity of Streams in Washington State’s Coast Range Ecoregion 345-355 R.K. HALL, P. HUSBY, G. WOLINSKY, O. HANSEN and M. MARES / Site Access and Sample Frame Issues for R-EMAP Central Valley, California, Stream Assessment 357-367 J.K. SUMMERS and K.E. TONNESSEN / Linking Monitoring and Effects Research: EMAP’s Intensive Site Network Program 369-380 V.D. ENGLE and J.K. SUMMERS / Determining the Causes of Benthic Condition 381-397 J.L. STODDARD, C.T. DRISCOLL, J.S. KAHL and J.H. KELLOGG / A Regional Analysis of Lake Acidification Trends for the Northeastern U.S., 1982-1994 399-413 J.E. VOGELMANN, T.L. SOHL, P.V. CAMPBELL and D.M. SHAW/ Region- al Land Cover Characterization Using Landsat Thematic Mapper Data and Ancillary Data Sources 415-428 S.S. HALE, M.M. HUGHES, J.F. PAUL, R.S. McASKILL, S.A. REGO, D.R. BENDER, N.J. DODGE, T.L. RICHTER and J.L. COPELAND / Man- aging Scientific Data: The EMAP Approach D. COOK, C. CRUZ-NEIRA, B.D. KOHLMEYER, U. LECHNER, N. LEWIN, L. NELSON, A. OLSEN, S. PIERSON and J. SYMANZIK/ Exploring Environmental Data in a Highly Immersive Virtual Reality Environment C.C. HOUSE, J.J. GOEBEL, H.T. SCHREUDER, P.H. GEISSLER, W.R. WILLIAMS and A.R. OLSEN / Prototyping a Vision for Inter-Agency Terrestrial Inventory and Monitoring: A Statistical Perspective N.M. BELFIORE and S.L. ANDERSON / Genetic Patterns as a Tool for Monitoring and Assessment of Environmental Impacts: The Example of Genetic Ecotoxicology 710 R.N. SILBIGER, S.A. CHRIST, A.C. LEONARD, M. GARG, D.L. LATTIER, S. DAWES, P. DIMSOSKI, F. McCORMICK, T. WESSENDARP, D.A. GORDON, A.C. ROTH, M.K. SMITH and G.P. TOTH / Preliminary Studies on the Population Genetics of the Central Stoneroller (Campos- toma anomalum) from the Great Miami River Basin, Ohio 481-495 N.A. MAZNIK / Genetic Impact of Low-Dose Radiation on Human and Non- Human Biota in Chernobyl, Ukraine 497-506 J.D. YOUNT / Human Carrying Capacity as an Indicator of Regional Sustainability 507-509 M. WACKERNAGEL and J.D. YOUNT / The Ecological Footprint: An Indi- cator of Progress toward Regional Sustainability 511-529 D.E. CAMPBELL /Emergy Analysis of Human Carrying Capacity and Region- al Sustainability: An Example Using the State of Maine 531-569 J.-Y. KO, C.A.S. HALL and L.G. LOPEZ-LEMUS / Resource Use Rates and Efficiency as Indicators of Regional Sustainability: An Examination of Five Countries 571-593 T. BRYDGES and A. LUMB/ Canada’s Ecological Monitoring and Assessment Network: Where We Are At And Where We Are Going 595-603 Volume 51 No.3 July 1998 MARIELLE THOMAS, ANDRE FLORION and DIDIER CHRETIEN / A New Warning Biomonitor Using a Weakly Electric Fish, Apterono- tus Albifrons (Gymnotiformes), and the Effect of Temperature on the Bioelectric Responses 605-620 R.P. BRECKENRIDGE and A.B. CROCKETT/ Determination of Background Concentrations of Inorganics in Soils and Sediments at Hazardous Waste Sites 621-656 H. PLAISANCE, S. SAUVAGE, P. CODDEVILLE and R. GUILLERMO/ A Comparison of Precipitation Sensors Used on the Wet-Only Collectors 657-671 DENNIS A. WENTZ, IAN R. WAITE and FRANK A. RINELLA/ Comparison of Streambed Sediment and Aquatic Biota as Media for Characteriz- ing Trace Elements and Organochlorine Compounds in the Willamette Basin, Oregon 673-693 ZDENKO FRANIC, GORDANA MAROVIC, NEVENKA LOKOBAUER and JASMINKA SENCAR/ Radiocaesium Activity Concentrations in Milk in the Republic of Croatia and Dose Assessment 695-704 Author Index of Volume 51 705-706 Contents of Volume 51 707-710