Scientific Publications, Technical Reports, and Presentations
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Phycology Section, Patrick Center for Environmental Research
Scientific Publications, Technical Reports, and Presentations |
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Algae Research with USGS NAWQA Diatom Paleolimnology Data Cooperative Autecological Data - Freshwater Algae
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Scientific Publications (* = peer reviewed) 2007 *Morales, E. A. & Trainor, F. R. 2007. The role of phenotypic plasticity in the interpretation of ecological data. In: Feyen, J., Aguirre, L. F. & Moraes, R. M. (Eds.). Congreso internacional sobre desarrollo y medio ambiente y recursos naturales: sostenibilidad a múltiples niveles y escalas/Internacional congress on development, environment and natural resources: Multi-level and multi-scale sustainability. Vol. II. pp. 1150-1157. Universidad Mayor de San Simón. Talleres Gráficos Kipus. Cochabamba, Bolivia. *Morales, E. A. & Vis, M. 2007. Epilithic diatoms (Bacillariophyceae) from cloud forest and alpine streams in Bolivia, South America. Proceedings of the Academy of Natural Sciences of Philadelphia 126: 123-155. *Siver, P. A., Hamilton, P. B. & Morales, E. A. 2007. Notes on the genus Nupela (Bacillariophyceae) including the description of a new species, Nupela scissura sp. nov. and an expanded description of Nupela paludigena. Phycological Research 55: 125-134. *Potapova, M. and P. B. Hamilton. 2007. Morphological and ecological variation within the Achnanthidium minutissimum (Bacillariophyceae) species complex. Journal of Phycology 43:561-575. *Potapova, M. and D. F. Charles. 2007. Diatom metrics for monitoring eutrophication in rivers of the United States. Ecological Indicators 7:48-70. *Ponader K. C., D. F. Charles & T. J. Belton. 2007. Diatom-based TP and TN inference models and indices for monitoring nutrient enrichment of New Jersey streams. Ecological Indicators 7:79-93. *Ponader, K. C. and M. G. Potapova.. 2007. Diatoms from the genus Achnanthidium in flowing waters of the Appalachian Mountains (North America): Ecology, distribution and taxonomic notes. Limnologica 37: 227-241. 2006 *Edlund, M. B, Morales, E. A. & Spaulding, S. A. 2006. The type and taxonomy of Fragilaria elliptica Schumann, a widely misconstrued taxon. In Witkowski, A. (Ed.). Proceedings of the 18th International Diatom Symposium, Poland. pp 53-59. Biopress Limited, Bristol, England. *Morales, E. A. & Manoylova, K. M. 2006. Staurosirella incognita Morales et Manoylov sp. nov., a non-spiny species from North America, with an emended description of Staurosirella Williams et Round (Bacillariophyceae). In: Proceedings of the 18th International Diatom Symposium, Poland, 2004. p. 325-336. Biopress Ltd. Bristol England. *Morales, E. A. 2006. Staurosira incerta (Bacillariophyceae) a new fragilarioid taxon from freshwater systems in the United States with comments on the structure of girdle bands in Staurosira Ehrenberg and Staurosirella Williams et Round. In Manoylov, K. & Ognjanova, N. (Eds.). Fossil and Recent Phycological studies. Dobrina Temniskova-Topalova. Festschrift. Pp. 133-145. Pensoft Publishers ad University Publishing House. Sophia, Bulgaria. Potapova, M. and Charles, D.F. 2006. Diatom metrics for monitoring eutrophication in rivers of the United States. Ecological Indicators (in press). Potapova, M. and Winter D. 2006. Use of nonparametric multiplicative regression for modeling diatom habitat: a case study of three Geissleria species from North America. Diatom Studies. Festschrift in honor of Dr. Temniskova-Topalova (in press). Sprouffske, K., D. Mellott, D. F. Charles, M. Potapova. 2006. Phyco-AIDE: Algal Indicators and Data Exploration. Version 2.0. Phycology Section, Patrick Center for Environmental Research, Academy of Natural Sciences, Philadelphia, PA (computer program) 2005 *Edlund, M. B., E. A. Morales & S. A. Spaulding. 2005. The type and taxonomy of Fragilaria elliptica Schumann, a widely misconstrued taxon. In Proceedings of the 18th International Diatom Symposium, Międzyzdroje, Poland (in press). *Morales, E. A. & M. Le. 2005. The taxonomy of the diatom Lacunicula sardiniensis Lange-Bertalot, Cavacini, Tagliaventi et Alfinito and its relationship with the genus Craticula Grunow (Bacillariophyceae). Proceedings of the Academy of Natural Sciences of Philadelphia 154: 155-161. *Morales, E. A. & M. Le. 2005. A new species of the diatom genus Adlafia (Bacillariophyceae) from the United States. Proceedings of the Academy of Natural Sciences of Philadelphia 154:149-154. *Morales, E. A. 2005. Observations of the morphology of selected fragilarioid diatoms (Bacillariophyceae) common in ecological studies from the United s. Phycological Research (in press). *Morales, E. A. 2005. Staurosira incerta (Bacillariophyceae) a new fragilarioid taxon from freshwater systems in the United s with comments on the structure of girdle bands in Staurosira Ehrenberg and Staurosirella Williams et Round. In Manoylov, K. & N. Ognjanova (Eds.). Fossil and Recent Phycological studies. Dobrina Temniskova-Topalova. Festschrift. Sophia, Bulgaria (in press). *Morales, E. A., L. L. Bahls & W. R. Cody. 2005. Morphological studies of Distrionella incognita (Reichardt) Williams (Bacillariophyceae) from North America with comments on the taxonomy of Distrionella Williams. Diatom Research (in press). *Morales, E. A. & K. M. Manoylov. 2005. Staurosirella incognita Morales et Manoylov sp. nov., a non-spiny species from North America, with an emended description of Staurosirella Williams et Round (Bacillariophyceae). In Proceedings of the 18th International Diatom Symposium, Międzyzdroje, Poland (in press). *Potapova, M.G. & D.F. Charles. 2005. Choice of substrate in algae-based water quality assessment. Journal of the North American Benthological Society 24: 415-427. [pdf] *Potapova, M.G., J. F. Coles, E. M. Giddings, & H. Zappia. 2005. A comparison of the influences of urbanization in contrasting environmental settings on stream benthic algal assemblages. In: Effects of urbanization on stream ecosystems. American Fisheries Society (in press) *Sprouffske, K., D. F. Charles, E. A. Morales, M. Potapova, K. C. Ponader, D. M. Winter, C. Bell, P. Cotter, R. McCourt, D. Mellott, C. Ratnayaka & D. Waterman. 2005. Academy of Natural Sciences Online Algae Image Resources. In Proceedings of the 18th International Diatom Symposium, Międzyzdroje, Poland (in press). *Thomson, J.R., D.D. Hart, D. F. Charles, T.L. Nightengale, & D. M. Winter. 2005. Effects of removal of a small dam on downstream macroinvertebrate and algal assemblages in a Pennsylvania stream. Journal of the North American Benthological Society 24: 192-207. [pdf] 2004 *Ector L., J.C. Kingston, D.F. Charles, L. Denys, M.S.V. Douglas, K. Manoylov, N. Michelutti, F. Rimet, J.P. Smol, R.J. Stevenson & J. G. Winter. 2004. Workshop report. Freshwater diatoms and their role as ecological indicators. Pages 469-480 in M. Poulin, editor, Proceedings of the 17th International Diatom Symposium, Ottawa, Canada. Biopress Limited, Bristol. *Potapova, M. G. and D. F. Charles. 2004. Potential use of rare diatoms as environmental indicators in USA rivers. Proceedings of the 17th International Diatom Symposium. Ottawa, Canada. Biopress Limited, Bristol. *Potapova, M., D. F. Charles, K. C. Ponader and D. M. Winter. 2004. Quantifying species indicator values for trophic diatom indices: a comparison of approaches. Hydrobiologia 517: 25-41. *Potapova M. G. & K. C. Ponader. 2004. Two common North American diatoms, Achnanthidium rivulare sp. nov. and A. deflexum (Reimer) Kingston: Morphology, ecology and comparison with related species. Diatom Research 19(1) 33-57. *Winter, D. M., J. Arney & S. W. Wise Jr. 2004. Upper Miocene to Pleistocene diatom biostratigraphy, ODP Leg 191 in the Northwest Pacific. In Kanazawa, T., Sager, W.W., Escutia, C., et al., 2001. Proc. ODP, Sci. Results, 191. (in press) 2003 *Hession, W. C., T. E. Johnson, D. F. Charles, R. J. Horwitz, D. A. Kreeger, D. J. Velinsky, J. E. Pizutto, B. D. Marshall & J. D. Newbold. 2003. Ecological benefits of riparian reforestation in urban watersheds. Proceedings of the ASCE-EWRI World Water & Environmental Congress, Protection & Restoration of Urban & Rural Streams, Philadelphia, PA, June 2003. 10 pp. *Manoylova, K. M., E. A. Morales & E. F. Stoermer. 2003. Staurosira stevensonii (Bacillariophyta) a new species from Florida, USA. European Journal of Phycology 38:65-71. [pdf] *Morales, E. A. 2003. On the taxonomic position of the Belonastrum and Synedrella, two new fragilarioid genera described by Round and Maidana (2001). Cryptogamie Algologie 24:277-288. *Morales, E. A. & M. B. Edlund. 2003. Studies in selected fragilarioid diatoms (Bacillariophyceae) from Lake Hovsgol, Mongolia. Phycological Research 54:225-239. *Morales, E. A. 2003. Fragilaria pennsylvanica, a new diatom (Bacillariophyceae) species from the United States of America with comments on the taxonomy of the genus Synedra Ehrenberg. Proceedings of the Academy of Natural Sciences of Philadelphia 153:155-166. *Potapova, M. & D. F. Charles. 2003. Distribution of benthic diatoms in U.S. rivers in relation to conductivity and ionic composition. Freshwater Biology 48:1311-1328. [pdf] *Potapova M. G., K. C. Ponader, R.L. Lowe, T.A. Clason & L.L. Bahls. 2003. Small-celled Nupela species from North America. Diatom Research 18(2):293-306. 2002 *Bushaw-Newton, K. L. , D. D. Hart, J. E. Pizzuto, J. R. Thomson, J. Egan, J. T. Ashley, T. E. Johnson, R. J. Horwitz, M. Keeley, J. Lawrence, D. F. Charles, C. Gatenby, D. A. Kreeger, T. Nightengale, R. L. Thomas & D. J. Velinsky. 2002. An integrative approach towards understanding ecological responses to dam removal: The Manatawny Creek Study. Journal of the American Water Resources Association 38(6):1581-1599. *Hart, D. D., T. E. Johnson, K. L. Bushaw-Newton, R. J. Horwitz, A. T. Bednarek, D. F. Charles, D.A. Kreeger & D.J. Velinsky. 2002. Dam removal: Challenges and opportunities for ecological research and river restoration. BioScience 52:669- 681. *Iwai, M. & D. M. Winter. 2002. Data report: taxonomic notes of Neogene diatoms from the western Antarctic peninsula: Ocean Drilling Program Leg 178. In P. F. Barker, A. Camerlenghi, G. D. Acton, & A.T.S. Ramsay, editors. Proc. ODP, Sci. Results, 178, http://www-odp.tamu.edu/publications/178_SR/chap_35/chap_35.htm. *Morales, E. A. 2002. Studies in selected fragilarioid diatoms of potential indicator value from Florida (USA) with notes on the genus Opephora Petit (Bacillariophyceae). Limnologica 32:102-113. [pdf] *Morales, E. A., F. R. Trainor & C. Schlichting. 2002. Phenotypic plasticity in the algae: ecological and evolutionary implications. Constancea 83, http://ucjeps.berkeley.edu/constancea/83/morales_etal/plasticity.html. *Ponader, K., R. Pienitz, W. Vincent & K. Gajewski. 2002. Limnological conditions in a subarctic lake (northern Quebec, Canada) during the late Holocene: analyses based on fossil diatoms. Journal of Paleolimnology. 27(3):353-366. *Potapova, M. & D. F. Charles. 2002. Benthic diatoms in USA rivers: distribution along spatial and environmental gradients. Journal of Biogeography 29:167-187. [pdf] *Snoeijs, P., S. Busse & M. Potapova. 2002. The importance of diatom cell size in community analysis. Journal of Phycology 38:265-281. *Winter, D. M. & M. Iwai. 2002. Data report: Neogene diatom biostratigraphy, Antarctic Peninsula Pacific margin, ODP Leg 178 rise sites. In P. F. Barker, A. Camerlenghi, G. D. Acton, & A.T.S. Ramsay, editors. Proc. ODP, Sci. Results, 178, http://www-odp.tamu.edu/publications/178_SR/chap_35/chap_35.htm. 1999-2001 *Battarbee, R. W., D. F. Charles, S. S. Dixit & I. Renberg. 1999. Diatoms as indicators of surface water acidity. Pages 85-127 in: E. F. Stoermer & J. P. Smol, editors. The diatoms: applications for the environmental and earth sciences. Cambridge University Press, Cambridge. Camburn, K. E. & D. F. Charles. 2000. Diatoms of low-alkalinity lakes in the Northeastern United States. (A Ppotographic iconograph illustrating nearly 1000 specimens). Special Publication 18, The Academy of Natural Sciences of Philadelphia, Philadelphia, PA. 152 pp. *Dixit, S. S., J. P. Smol, D. F. Charles, R. M. Hughes, S. G. Paulsen & G. B. Collins. 1999. Assessing water quality changes in the lakes of the northeastern United States using sediment diatoms. Canadian Journal of Fisheries and Aquatic Sciences 56:131-152. Hession, W. C., T. E. Johnson, D. F. Charles, D. D. Hart, R. J. Horwitz, D. A. Kreeger, J. E. Pizzuto, D. J. Velinsky, J. D. Newbold, C. Cianfrani, T. Clason, A. M. Compton, N. Coulter, L. Fuselier, B. D. Marshall, and J. Reed. 2000. Ecological benefits of riparian reforestation in urban watersheds: study design and preliminary results. Environmental Monitoring and Assessment 63 (1):211-222. *Morales, E. A. 2001. Morphological studies in selected fragilarioid diatoms (Bacillariophyceae) from Connecticut waters, USA. Proceedings of the Academy of Natural Sciences of Philadelphia 151:39-54. *Morales, E. A., P. A. Siver & F. R. Trainor. 2001. Identification of diatoms during ecological assessments: comparison between light and scanning electron microscopy. Proceedings of the Academy of Natural Sciences of Philadelphia 151:29-37. *Morales, E. A. & F. R. Trainor. 2001. Las algas, conceptos críticos en la evaluación de su diversidad. [The algae, critical concepts for the evaluation of their diversity] Page 77 in R. Primack, R. Rozzi, P. Feisinger, R. Dirzo & F. Massardo, editors. Fundamentos de Conservación Biológica. Fondo de Cultura Económica, México. *Sullivan, T. J., D. F. Charles, J. A. Bernert, B.McMartin, K. B. Vaché & J. Zehr. 1999. Relationship between landscape characteristics, history, and lakewater acidification in the Adirondack Mountains, New York. Water, Air and Soil Pollution 112: 407-427. *Winter, D. M. 2001. Data report: diatom biostratigraphic data and plates from ODP Leg 172, Hole 1063D, with brief discussion of present ecological affinities of taxa. In L. D. Keigwin, D. Rio, G. D. Acton, & E. Arnold, editors. Proc. ODP, Sci. Results, 172, http://www-odp.tamu.edu/publications/172_SR/chap_08/chap_08.htm. *Winter, D. M. & S. W. Wise Jr. 2001. Calcareous nannofossils from Leg 178, Antarctic peninsula, Pacific continental margin: Sites 1096 and 1101. In P. F. Barker, A. Camerlenghi, G. D. Acton, & A.T.S. Ramsay, editors. Proc. ODP, Sci. Results, 178, http://www-odp.tamu.edu/publications/178_SR/chap_26/chap_26.htm Technical Reports and Other Publications 2007 * Charles, D.F., S. Hamsher, and J. Zalack. 2007. Analysis of periphyton data to support development of nutrient criteria for streams in the Mid-Atlantic Piedmont. Final Draft, Report No. 07-02, submitted to the Maryland Department of the Environment. April 2007. Charles, D.F. and J. Zalack. 2007. Report on diatom indicators for New Mexico rivers and streams. Mantell, J.M., M. Potapova, D.T. Mellott, S.J. Mays, D.H. Keller, E.A. Morales, D.F. Charles, K.M. Sprouffske, and J.A. Collins. 2007. Procedures for making additions to the Academy of Natural Sciences of Philadelphia Diatom Herbarium’s New Species File. Protocol No. 13-67 Rev. 1. PCER, ANSP, Philadelphia, PA. 41 pp. Mantell, J.M., M. Potapova, D.T. Mellott, S.J. Mays, D.H. Keller, E.A. Morales, D.F. Charles, K.M. Sprouffske, and J.A. Collins. 2007. Procedures for making additions to the Academy of Natural Sciences of Philadelphia Diatom Herbarium’s Bibliography File. Protocol No. 13-68 Rev. 0. PCER, ANSP, Philadelphia, PA. 41 pp. Ren, Ling, F. Acker and D. F. Charles 2006. Seventeenth NAWQA Workshop on Harmonization of Algal Taxonomy. Report No. 07-09. Patrick Center for Environmental Research, ANSP, Philadelphia, PA. 237 pp. 2006 Morales, E. A. (Ed.). 2006. Twelfth NAWQA Taxonomy Workshop on Harmonization of Algal Taxonomy. Report No. 06-03. Patrick Center for Environmental Research, ANSP, Philadelphia, PA. 193 pp. Morales, E. A. 2006. Fifteenth NAWQA Workshop on Harmonization of Algal Taxonomy April 28-May 1, 2005. Report No. 06-07. Patrick Center for Environmental Research, ANSP, Philadelphia, PA. 271 pp. 2005 Morales, E. A. and D. F. Charles (Eds.). 2005. Tenth NAWQA Taxonomy Workshop on Harmonization of Algal Taxonomy. Report No. 05-1F. Patrick Center for Environmental Research, ANSP, Philadelphia, PA. 121 pp. 2004 Ponader, K. & D. F. Charles. 2004. Understanding the relationship between natural conditions and loadings on eutrophication: Algal indicators of eutrophication for New Jersey streams. Final Report Year 3. PCER, ANSP, Philadelphia, PA. 56 pp. Ponader, K. & D. F. Charles. 2004. Understanding the relationship between natural conditions and loadings on eutrophication: Algal indicators of eutrophication for New Jersey streams. Final Report Year 4. PCER, ANSP, Philadelphia, PA. 46 pp. Ponader, K. & D. F. Charles. 2004. Relationships between periphyton and chemical-physical characteristics of the West Branch Susquehanna River and the influence of acid mind drainage. Analysis of periphyton samples from AMD study of West Branch Susquehanna river. Final Report. PCER, ANSP, Philadelphia, PA. 35 pp. Ponader, K. & D. Winter. 2004. Field sampling procedures for the New Jersey Algae Indicators project: Sampling method for collection of qualitative diatom samples and algal biomass samples from epipsammic/epipelic habitat in the field. PCER Procedure No. P-13-67, PCER, ANSP, Philadelphia, PA. 7pp. Potapova, M.G. 2004. Preliminary results of ecological analysis of the algal (non-diatom) NAWQA national dataset. Unpublished report prepared for the USGS NAWQA program. 2003 Bouchard, R., F. Acker, J. Jackson, R. Horwitz, & R. Davis. 2003. 2001 Savannah River biological surveys for Westinghouse Savannah River Company. Report No. 03-08F. PCER, ANSP, Philadelphia, PA. 265 pp. Charles, D., K. Sprouffske, E. Morales, F. Acker & M. Schadler. 2003. Documentation for algal data submitted by The Academy of Natural Sciences to the NAWQA Bio-TDB in April 2003. Report No. 03-06. PCER, ANSP, Philadelphia, PA. 15 pp. Morales, E. A. 2003. Eighth NAWQA Taxonomy workshop on harmonization of algal taxonomy. Report No. 03-12. PCER, ANSP, Philadelphia, PA. 24 pp. (contains two plates). Morales E. A. & M. Potapova. 2003. Taxonomical studies on selected fragilarioid taxa from the United States. Page 25 in 42nd Northeast Algal Symposium. Saratoga Springs, NY, USA. Morales, E. A. & M. L. Vis. 2003. New diatom taxa from South America. Page 25 in 42nd Northeast Algal Symposium. Saratoga Springs, NY, USA. Ponader, K. & D. F. Charles. 2003. Understanding the relationship between natural conditions and loadings on eutrophication: Algal indicators of eutrophication for New Jersey streams. Final Report Year 2. Report No. 03-04. PCER, ANSP, Philadelphia, PA. 80 pp. http://www.state.nj.us/dep/dsr/wq/wq.htm Ponader, K., D. Winter & D. Charles. 2003. Field sampling procedure for the New Jersey algae indicators project: use of diatometer artificial substrates. Patrick Center for Environmental Research Procedure No. P-16-66. PCER, ANSP, Philadelphia, PA. 32 pp. Sprouffske, K. & D. Charles. 2003. Requirements for Algal Data Aggregation and Analysis (ADAA), Version 2. PCER, ANSP, Philadelphia, PA. 11 pp. 2002 Acker, F. 2002. 1998-1999 White River Diatometer Studies. Report No. 02-23F. PCER, ANSP, Philadelphia, PA. Charles, D. F., C. A. Knowles & R. S. Davis, editors. 2002. Protocols for the analysis of algal samples collected as part of the U.S. Geological Survey National Water-Quality Assessment Program. Report No. 02-06. PCER, ANSP, Philadelphia, PA. 124 pp. http://diatom.acnatsci.org/nawqa/pdfs/ProtocolPublication.pdf Morales, E. A. 2002. Sixth NAWQA workshop on harmonization of algal taxonomy. Report No. 02-10. PCER, ANSP, Philadelphia, PA. 37 pp. (contains 17 plates) Morales, E. A. & P. B. Hamilton. 2002. Seventh NAWQA Workshop on harmonization of algal taxonomy. Report No. 02-21. PCER, ANSP, Philadelphia, PA. 52 pp. (contains 17 plates) Ponader, K. & D. Winter. 2002. Procedure for semi-quantitative analysis of soft-algae and diatoms. Procedure No. P-13-65. PCER, ANSP, Philadelphia, PA. 6 pp. Sprouffske, K. 2002. Subcontractor soft algae database guide. PCER, ANSP, Philadelphia, PA. 10 pp. Sprouffske, K. & D. Charles. 2002. Requirements for algal data aggregation and analysis (ADAA), Version 1. PCER, ANSP, Philadelphia, PA. 13 pp. Sprouffske, K. & C. Ratnayaka. 2002. BioTDB Export User’s Guide. PCER, ANSP, Philadelphia, PA. 8 pp. Sprouffske, K., D. Winter & D. F. Charles. 2002. DPDC Data Entry Instruction Manual. PCER, ANSP, Philadelphia, PA. 32 pp. 2001-1999 Bouchard, R., F. Acker, D. Charles, T. Nightengale, R. Horwitz, D. Velinsky, R. Davis, R. Thomas & J. McNair. 2001. 2000 Sabine River studies for the Eastman Chemical Company, Texas Operations. Report No. 01-8F. PCER, ANSP, Philadelphia, PA. 249 pp. Bouchard, R., F. Acker, D. Charles, T. Nightengale, R. Horwitz, D. Velinsky, R. Davis & R. Thomas. 2001. Biological and chemical studies of the Guadalupe River, 2000. Report No. 01-10F. PCER, ANSP, Philadelphia, PA. 136 pp. Bouchard, R., F. Acker, R. Grant, Jr., J. Jackson, R. Horwitz, R. Davis & R. Thomas. 2001. Progress Report on 1999-2000 river quality surveys conducted by the Academy of Natural Sciences of Philadelphia on the Savannah River. Reporty No. 01-03. PCER, ANSP, Philadelphia, PA. 9 pp. Bouchard, R., F. Acker, R. Grant, Jr., J. Jackson, R. Horwitz, R. Davis, R. Thomas & J. McNair. 2001. 2000 Savannah River biological surveys for Westinghouse Savannah River Company. Reporty No. 01-16F. PCER, ANSP, Philadelphia, PA. 261 pp. Charles, D. F. 2001. Distribution of riffles, runs, pools and aquatic macrophytes in the Jackson River from Covington to Clifton Forge, VA: observations made during a canoe trip, 12-13 October 2000. Report No. 00-22. PCER, ANSP, Philadelphia, PA. 13 pp. Charles, D. F. 2000. Further evaluation of diatom periphyton as indicators of cultivation and grazing impairment in Montana wetlands. Report No. 00-10R. PCER, ANSP, Philadelphia, PA. 40 pp. Charles, D. F. 1999. An evaluation of diatom periphyton as indicators of cultivation and grazing impairment in Montana wetlands. Report 99-1F. PCER, ANSP, Philadelphia, PA. 50 pp. Charles, D., D. Winter & M. Hoffman. 2000. Field Sampling procedures for the New Jersey Algae Indicators project. PCER Procedure P-13-64. PCER, ANSP, Philadelphia, PA. 11 pp. Clason, T. A. & D. F. Charles. 2000. Second NAWQA taxonomy workshop on harmonization of algal taxonomy, November 1999. Report No.00-7. PCER, ANSP, Philadelphia, PA. Clason, T. A. & D. F. Charles. 1999. First NAWQA taxonomy workshop on harmonization of algal taxonomy, May 1999. Report No.99-14. PCER, ANSP, Philadelphia, PA. 20 pp. Cotter, P. Tabulator installation and users guide. 2001. PCER, ANSP, Philadelphia, PA. 24 pp. Cotter, P., K. Sprouffske, D. Charles, F. Acker, C. Knowles & E. A. Morales. 2001. Procedure of entry of 1991- and 1994-Start NAWQA algae data into ANSP data into ANSP databases and transfer to the Bio-TDB in August 2001. PCER, ANSP, Philadelphia, PA. 66 pp. Morales, E. A. 2001. On the adoption of new diatom genera names for the Savannah Diatometer Study. Pages 47-55 in Academy of Natural Sciences of Philadelphia. 2000 Savannah River biological surveys for Westinghouse Savannah River Company. Appendix A-1, Report No. 01-16F. PCER, ANSP, Philadelphia, PA. 261 pp. Morales, E. A. 2001. Fourth NAWQA workshop on harmonization of algal taxonomy. October 2000. Report No. 00-21F. PCER, ANSP, Philadelphia, PA. 40 pp. (contains 12 plates). Morales, E. A. 2001. Fourth NAWQA taxonomy workshop. 16-18 October 2000. Diatom Analysis Laboratory. PCER, ANSP, Philadelphia, PA. (electronic version) Morales, E. A. 2001. Fifth NAWQA workshop on harmonization of algal taxonomy. Report No. 02-09. PCER, ANSP, Philadelphia, PA. 59 pp. (contains 7 plates) Morales, E. A. 1999-2001. First, second, third, fourth, and fifth NAWQA taxonomy workshops. PCER, ANSP, Philadelphia, PA. (electronic version) Morales, E. A. & M. Potapova. 2000. Third NAWQA workshop on harmonization of algal taxonomy, May 2000. Report No.00-8. PCER, ANSP, Philadelphia, PA. 52 pp. Ponader, K. & D. Charles. 2001. Understanding the relationship between natural conditions and loadings on eutrophication: algal indicators of eutrophication for New Jersey streams. Final Report Year 1. Report No. 01-26. PCER, ANSP, Philadelphia, PA. 23 pp. Sprouffske, K., F. Acker, D. F. Charles & M. Schadler. 2001. Reconciliation of University of Louisville and ANSP cell density calculations. Addendum to: procedure of entry of 1991- and 1994-Start NAWQA algae data into ANSP data into ANSP databases and transfer to the Bio-TDB in August 2001. PCER, ANSP, Philadelphia, PA. 32 pp. Presentations 2007 Charles, D.F., S. Hamsher and J. Zalack. 2007. Diatom indicators of nutrients in the Mid-Atlantic region. 8th Annual 2007 Mid-Atlantic NPS/TMDL/WQS/WQM Training Workshop, Ocean City, MD, May 21-24. Flinders, C.A., D.F. Charles, O. Gibb, D.D. Hart, R.J. Horwitz, R.L. Thomas, D.J. Velinsky and J. Zalack. 2007. Controlling lotic periphyton using pulsed flows in the Jackson River: Spatial effects of a planned and natural pulsed flow event on biomass. North American Benthological Society 55th Annual Meeting, June 3-8, 2007, Columbia, South Carolina. Hart, D.D., J. Ashley, A. Bednarek, R. Brown, K. Bushaw-Newton, D. F. Charles, R.J. Horwitz, J. Pizzuto and D.J. Velinsky. 2007. Dam removal: Research needs for guiding effective conservation strategies. Same meeting as above. Horwitz, R.J., D.F. Charles, C.A. Flinders, D.D. Hart, D.H. Keller, R.L. Thomas, D.J. Velinsky and J. Zalack. 2007. Controlling lotic periphyton using pulsed flows in the Jackson River: Effects of high flow refuges on periphyton biomass during a pulsed flow experiment. Same meeting as above. Thomas, R.L., D.F. Charles, C.A. Flinders and D.J. Velinsky. 2007. A multi-year study of periphyton dynamics in the Jackson river: Patterns of biomass and community structure and the relationship to physico-chemical conditions. Same meeting as above. * Charles, D.F., F.A. Acker, P.A. Bukaveckas, W.H. Shaw, C.W. Boylen, and S.A. Nierzwicki-Bauer. 2007. Response of phytoplankton assemblages to decreasing acidic deposition in Adirondack mountain lakes (New York, USA). 30th Congress of the International Association of Theoretical and Applied Limnology (SIL), Montreal, Quebec, Canada, August 12-18, 2007. * Charles, D.F., D. Mellott and M. Potapova. 2007. Computer applications and electronic resources for diatom research at the Academy of Natural Sciences. North American Diatom Symposium, University of Michigan Biological Station, Douglas Lake, MI, September 12-16, 2007. * Hondula, K., D.F. Charles and M. Potapova. 2007. An investigation of the freshwater diatom genus Reimeria: Distinctions between Reimeria sinuata and Reimeria uniseriata. Same NADS meeting as above. * Charles, D.F. 2007. New approaches for using diatoms as indicators of nutrient conditions in rivers and streams. Biology Department seminar. The Ohio University, Athens, OH, March 8-10, 2007. Invited and hosted by Dr. Morgan Vis. Also had several meeting with honors and undergraduate students. * Charles, D.F. 2007. The science of nutrients: Diatoms as nutrient indicators in rivers and streams. Nutrient Forum. Sponsored by the US EPA and the PA Department of Environmental Protection. Philadelphia Visitor’s Center, October 4, 2007. * Charles, D.F. Presentation to Academy Board of Trustees. Phycology / ANSP Diatom research, April 18. Zalack, J.T. and D.F. Charles. 2007. Changes in the Jackson River, VA: Effects of management techniques on algal biomass and taxonomic composition. Same NADS meeting as above. Charles, D.F., F.A. Acker, P.A. Bukaveckas, W.H. Shaw, C.W. Boylen, and S.A. Nierzwicki-Bauer. 2007. Response of phytoplankton assemblages to decreasing acidic deposition in Adirondack mountain lakes. (Poster). EMAP Conference - Environmental Monitoring, Evaluation, and Protection in New York: Linking Science and Policy, NYSERDA (New York State Energy Research and Development Authority), November 15-16, Albany, NY. Potapova, M. 2007. A New Diatom Genus Based on Achnanthes kriegeri Krasske, presented at the 19th North American Diatom Symposium, Michigan, September 12-16, 2007. Potapova, M. & K. Ponader. 2007. The Diversity of Sellaphoraceae in Rivers and Springs of the Southeastern United States, presented at the 19th North American Diatom Symposium, Michigan, September 12-16, 2007. S.A. Spaulding, D. Lubinski, M. Potapova, J. Thompson, J. Kinsey, and M. Edlund. 2007. Developing a web-based identification guide and ecological resource for diatoms of western North America, presented at the 19th North American Diatom Symposium, Michigan, September 12-16, 2007. Potapova, M. 2007. River algae: Taxonomy and Use for Environmental Assessments, presented at annual meeting of the Association of Mid-Atlantic Aquatic Biologists, Cacapon State Park, Berkeley Springs, West Virginia, April 4-5, 2007. 2005 Morales, E. A. & S. E. Hamsher. 2005. Girdle band structure in the fragilarioid genera Staurosira and Staurosirella (Bacillariophyceae). 44th North East Algal Society Symposium, Rockport, Maine, USA. p. 25-26. Potapova, M. G. 2005. What can and what cannot be done with the NAWQA algal dataset? 14th NAWQA Taxonomy Workshop, ANSP, Philadelphia, PA, January, 2005. Potapova, M. G. & D. F. Charles. 2005. Diatom metrics for monitoring eutrophication in US rivers. American Society of Limnology and Oceanography 2005 Aquatic Sciences Meeting, Salt Lake City, Utah, February 20-25, 2005. 2004 Edlund, M. B., E. A. Morales & S. A. Spaulding. 2004. The type and taxonomy of Fragilaria elliptica Schumann, a widely misconstrued taxon. 18th International Diatom Symposium, Międzyzdroje, Poland, 2-7 September, 2004. p. 36. Hamilton, P. & E. A. Morales. Fragilariales: On Ulnaria and its relationship to Synedra and Fragilaria. 13th NAWQA Taxonomy Workshop on Harmonization of Algal Taxonomy. December 2004. ANSP, Philadelphia, PA. Charles, D.F., F.W. Acker, D.D. Hart, & C.W. Reimer. 2004. Regional-scale variation in diatom-water chemistry relationships in the eastern U.S. North American Benthological Society, Vancouver, BC, June 6-10, 2004 Charles, D. F., K. Sprouffske, E. A. Morales, M. Potapova, K. C. Ponader, D. M. Winter, C. Bell, P. Cotter, R. McCourt, D. Mellott, C. Ratnayaka, & D. Waterman. 2004. Academy of Natural Sciences online algae image resources. 18th International Diatom Symposium, Międzyzdroje, Poland, 2-7 September, 2004. p. 69. Boylen, C.W., J.W. Sutherland, D.A. Winkler, D.F. Charles, F. W. Acker, J.A. Bloomfield, S.O. Quinn, and S.A. Nierzwicki-Bauer. 2004. Changing nutrient chemistries in Adirondack lakes prompt changes in phytoplankton. American Society of Limnology and Oceanography, Savannah, GA, June 13-18, 2004. Brown, R.L., D. Hart, D. Velinsky, J. Pizzuto, D. Charles, R. Horwitz, T. Johnson, K. Skalak, D. Winter, T. Nightengale, J. Carr & J. McNair. 2004. Prioritizing sites for dam removal: how dam size translates to ecological impact. Ecological Society of America, Portland OR, August 1-6, 2004. Manoylov, K. M. & E. A. Morales. 2004. Staurosirella incognita Morales et Manoylov sp. nov., a non-spiny species from North America, with an emended description of Staurosirella Williams et Round (Bacillariophyceae). 18th International Diatom Symposium, Międzyzdroje, Poland, 2-7 September, 2004. p. 127. Morales, E. A. & M. Le. 2004. Taxonomía de la diatomea Lacunicula sardiniensis Lange-Bertalot, Cavacini, Tagliaventi et Alfinito y su relación con el género Craticula Grunow (Bacillariophyceae) [Taxonomy of the diatom Lacunicula sardiniensis Lange-Bertalot, Cavacini, Tagliaventi et Alfinito an its relationship with the genus Craticula Grunow (Bacillariophyceae)]. First Peruvian Phycological Congress/First South American Phycological Congress. Lima, Peru. p. 61. Morales, E. A., D. F. Charles, K. Sprouffske, , M. Potapova, K. C. Ponader, D. M. Winter, C. Bell, P. Cotter, R. McCourt, D. Mellott, C. Ratnayaka, & D. Waterman. 2004. Bases de datos en línea conteniendo fotografías electrónicas pertenecientes a la Academia de Ciencias Naturales de Filadelfia [On line databases containing electronic images from The Academy of Natural Sciences of Philadelphia]. First Peruvian Phycological Congress/First South American Phycological Congress. Lima, Peru. p. 31. Morales, E. A., M. Potapova. & D. F. Charles. 2004. Las diatomeas bénticas como indicadores de la calidad del agua [Benthic diatoms as indicators of water quality]. Universidad Mayor de San Simón, Facultad de Ciencias y Tecnología, Cochabamba, Bolivia. Morales, E. A. 2004. Current topics in diatom taxonomy and systematics. Bryn Athyn College, Bryn Athyn, PA. Invited Speaker. Morales, E. A. 2004. Diatoms : Champions of the world. ANSP WINS Program. Philadelphia, PA. Morales, E. A. & M. Le. 2004. Lacunicula sardiniensis Lange-Bertalot et al. (Bacillariophyceae) and its relationship with the genus Craticula Grunow. 43rd Northeast Algal Symposium. University of Connecticut, Avery Point, CT. p. 38. Morales, E. A. 2004. Diatom science, some current aspects. ANSP Diversity of Life Workshop for School Teachers. Philadelphia, PA. Morales, E. A. 2004. Current trends in freshwater fragilarioid diatom classification with emphasis on Fragilaria sensu lato. 13th NAWQA Taxonomy Workshop on Harmonization of Algal Taxonomy. ANSP, Philadelphia, PA. Pienitz R., É. Saulnier-Talbot, M.-A. Fallu, T. Laing, K. Ponader, K. Swadling & Ian Walker. 2004. Long-term climate stability in the Québec-Labrador (Canada) region: Evidence from paleolimnological studies. Arctic Climate Impact Assessment (ACIA) International Symposium on Climate Change in the Arctic. Reykjavik, Iceland, 9-12 November 2004. Ponader, K. C., D. F. Charles & T. J. Belton. 2004. Trophic diatom indices as tools for monitoring nutrients in New Jersey streams and rivers. North American Benthological Society, Vancouver, BC, Canada, June 2004. Potapova, M. G. 2004. Staurosirella in the NAWQA counts: ecological analysis reveals problems with identification and taxonomy. 12th NAWQA Taxonomy Workshop, ANSP, Philadelphia, PA, February, 2004. Potapova, M. G. 2004. Synedra ulna and related taxa: ecological data and occurrence in the NAWQA and ANSP counts. 13th NAWQA Taxonomy Workshop, ANSP, Philadelphia, PA, December 9-12, 2004. Potapova, M. G., J. F. Coles, E. M. Giddings, & H. Zappia. 2004. Impact of urbanization on stream benthic algal assemblages in contrasting environmental settings, presented at the annual meeting of the North American Benthological Society, Vancouver, British Columbia, June 6-10, 2004. Sprouffske, K. and P. J. Morris. Building internet databases for biodiversity informatics. REU Seminar Series. ANSP, Philadelphia, PA, USA. 2003 Acker, F., D. Winter & C. Grafe. 2003. Idaho database. 17th North American Diatom Symposium, Islamorada, FL. Charles, D. F. 2003. Environment: managing natural resources (panel presentation). Looking forward 30 years: Celebrating the 30th Anniversary of the Adirondack Park Agency Act and Examining the Private Land Use and Development Plan. Lake Placid, NY, October 2-3, 2003. Charles, D. F. & K. Ponader. 2003. Implementation of an algae indicator monitoring program for New Jersey streams. New Jersey Department of Environmental Protection, Trenton, NJ, November 5, 2003. Charles, D. F., M. Potapova, K. C. Ponader & D. M. Winter. 2003. Diatom-based methods for assessing nutrient enrichment in Northern Piedmont rivers. North American Benthological Society, Athens, GA, May 27-31, 2003. Charles, D. F., M. Potapova, K. Ponader & D. M. Winter. 2003. Quantifying diatom autecological characteristics using the USGS NAWQA dataset. 17th North American Diatom Symposium, Islamorada, Florida, October 21-26, 2003. Charles, D. F., K. Sprouffske, P. R. Sweets, T. J. Sullivan & D. Winter. 2003. The diatom paleolimnology data cooperative (DPDC). (Poster presentation) 9th International Paleolimnology Symposium, Espoo, Finland, August 24-28, 2003. Hagan E., C. A. Flinders, N. E. Saxe, D. J. Velinsky, D. F. Charles & R. L. Thomas. 2003. Ecological studies of algal communities in the Jackson River (Covington, VA): An assessment of stream health through multi-year nutrient and biomass monitoring. North American Benthological Society, Athens, Georgia, May 29, 2003. Morales, E. A. & M. L. Vis. 2003. New diatom taxa from South America. 42nd Northeast Algal Symposium. Saratoga Springs, NY, USA. Morales E. A. & M. Potapova. 2003. Taxonomical studies on selected fragilarioid taxa from the United States. 42nd Northeast Algal Symposium. Saratoga Springs, NY, USA. Ponader, K., and D. F. Charles. 2003. Implementation of an algae indicator monitoring program for New Jersey streams. New Jersey Department of Environmental Protection, Trenton, NJ, November 5, 2003. Also presented as a seminar in PCER on November 4, 2003. Sachen, K. , C. A. Firth, N. E. Saxe, C. A. Flinders, F. Acker & D. F. Charles. An ecological study of algal communities in the Jackson River (Covington, VA): Spatial and temporal trends in the taxonomic composition of algal assemblages. North American Benthological Society, Athens, Georgia, May 29, 2003. Sprouffske, K. 2003. Phyco-AIDE Program: algal indicators and data exploration, presented as NAWQA CyberSeminar. July. Sprouffske, K., D. F. Charles, P. R. Sweets, T. J. Sullivan, and D. Winter. 2003. The Diatom paleolimnology data cooperative (DPDC). 17th North American Diatom Symposium, Islamorada, Florida, October 21-26, 2003. Winter, D. M. & D. F. Charles. 2003. Influence of dams and impoundments on diatom assemblages at 16 sites in Southeastern Pennsylvania, Northern Maryland and Northern Delaware. 17th North American Diatom Symposium, Islamorada, Florida, October 21-26, 2003. 2002 Acker, F. 2002. Modern cyanobacteria taxonomy: report on a workshop by Jeff Johnasen to the ANSP, PCER Phycology Section. Charles, D. F. 2002. Algal research and ecological synthesis, ANSP and NAWQA co-operative agreement: overview. NAWQA Leadership Team meeting, Philadelphia, PA., February 6, 2002. Charles, D. F. & F. W. Acker. 2002. Phytoplankton assemblages in lakes studied by the Adirondack Effects Assessment Program. Northeast Natural History Conference VII., April 25-26, 2002. Charles, D. F. & F. W. Acker. 2002. Phytoplankton assemblages in lakes studied by the Adirondack Effects Assessment Program. 9th Annual Conference on the Adirondacks, Saranac Lake, NY, May 2002. Charles, D. F. & F. W. Acker. 2002. Phytoplankton. Adirondack Effects Assessment Program Workshop, Sagamore Hotel and Darrin Fresh Water Institute, Boulton Landing, NY, June 18-20, 2002. Charles, D. F. & M. Potapova. 2002. Calibration sets for quantifying ecological characteristics of river algae: habitat variability and spatial scale. North American Benthological Society, Pittsburgh, PA, June 2002. Charles, D. F., M. Potapova, K. Ponader. & D. Winter. 2002. Diatom-based methods for assessing nutrient enrichment in rivers of the Northern Piedmont Ecoregion (USA). 17th International Diatom Symposium, Ottawa, Canada, August 2002. Morales, E. A. 2002. New fresh and brackish water fragilarioid diatoms from the United States. 41st Northeast Algal Symposium. University of New Hampshire, Durham. Morales, E. A. 2002. Current topics in diatom taxonomy. The Academy of Natural Sciences of Philadelphia/Sigma-Xi Seminar Series. Philadelphia, PA. Morales, E. A. & A. Jasinski. 2002. Morphological studies in the Gomphonema parvulum complex: evidence of cryptic species? 17th International Diatom Symposium, Ottawa, Canada, August 25-31, 2002. Morales, E. A. 2002. Crítica de los esquemas de clasificación actuales de las diatomeas fragilarioideas de aguas continentales [A critique of current freshwater fragilarioid diatom classification]. VI Latin American Phycological Congress/IV Panamerican Phycological Reunion. Ponce, Puerto Rico. Morales, E. A. 2002. Métodos taxonómicos utilizados para el análisis de muestras colectadas para NAWQA (National Water Quality Assessment Program) [Taxonomic methods used in the analysis of algal samples collected as part of the National Water Quality Assessment Program (NAWQA). VI Latin American Phycological Congress/IV Panamerican Phycological Reunion. Ponce, Puerto Rico. Morales, E. A. 2002. Diatom taxonomy and related issues, ANSP and NAWQA co-operative agreement. NAWQA Leadership Team meeting, Philadelphia, PA., February 6, 2002. Morales, E. A. & A. Jasinski. 2002. Estudios morfológicos en el complejo Gomphonema parvulum [Morphological studies in the Gomphonema parvulum complex]. VI Latin American Phycological Congress/IV Panamerican Phycological Reunion. Ponce, Puerto Rico. Morales, E. A., M. G. Potapova, & D. F. Charles. 2002. Utilizacion de diatomeas bén ticas para la evaluación de la calidad del agua en ríos de los EE.UU. [The use of benthic diatoms in the evaluation of water quality in USA rivers]. VI Latin American Phycological Congress/IV Pan-American Phycological Reunion. Ponce, Puerto Rico. Morales, E. A., M. Potapova & D. F. Charles. 2002. Development of diatom-based water quality indicators in the NAWQA program. VI Latin American Phycological Congress, September 2002, Ponce, Puerto Rico. Ponader, K. C., D. F. Charles & T.J. Belton. 2002. Development on algal indicators for monitoring eutrophication in New Jersey streams. Biology seminar, Bryn Athyn College, Pennsylvania, April 2002. Ponader, K. C., D. F. Charles & T. J. Belton. 2002. Development of algal indicators for monitoring eutrophication in New Jersey streams. North American Benthological Society, Pittsburgh, PA, June 2002. Ponader, K. C., D. F. Charles & T. J. Belton. 2002. Benthic diatoms as indicators of nutrient levels in New Jersey streams. 17th International diatom symposium, Ottawa, Canada, August 2002. Ponader, K. C., D. F. Charles & T. J. Belton. 2002. Diatomées benthiques indicatrices des taux de nutriments dans les rivi Pres du New Jersey. 21 Pme Colloque de l'Association des Diatomistes de Langue Française (ADLaF). Nantes, France, September 2002. Potapova, M. 2002. Analysis of NAWQA algal data: development of nutrient indicators and evaluation of sample types. NAWQA CyberSeminar, November 2002. Potapova, M. 2002. Analysis of the NAWQA algal data. NAWQA Leadership Team meeting, Philadelphia, PA., February 6, 2002. Potapova, M. & D. F. Charles. 2002. Choice of substrate type for water quality assessment using benthic algae. North American Benthological Society, Pittsburgh, PA, June 2002. Potapova, M. & D. F. Charles. 2002. Potential use of rare diatoms as environmental indicators in USA rivers. 17th International Diatom Symposium, Ottawa, Canada, August 2002. Potapova, M. & D. F.Charles. 2002. Choice of substrate type for water quality assessment using benthic algae. North American Benthological Society, Pittsburgh, PA, June 2002. Sprouffske, K. 2002. Computer applications supporting the analysis of NAWQA algal data. NAWQA Leadership Team meeting, Philadelphia, PA., February 6, 2002. Winter, D. M., D. F. Charles & M. Potapova. 2002. Benthic diatoms in Manatawny Creek, southeastern Pennsylvania: temporal variability and the effects of dam removal. 17th International Diatom Symposium, Ottawa, Canada, August 2002. Wynn, K. H. & F. Acker. 2002. Integrated assessment of instream impacts associated with urbanization in the Eagle River watershed, Colorado. Annual Water Resources Conference, Philadelphia, PA, November 2002. 1999-2001 Acker F. W. & D. Winter. 2001. 50+ Years of diatom studies on the lower Guadalupe River, Texas. 16th North American Diatom Symposium, Ely, MN. Charles, D. F. 2001. European diatom database initiative: final workshop. ECRC, University College London, July 23 - 24. Invited as an Advisor to EDDI and made presentation on DPDC project. Charles, D. F. 2000. Use of diatom algae to monitor river and stream water quality. Pennsylvania Department of Environmental Protection Biologists meeting, Stroud Water Research Center, November 2, 2000. Charles, D. F. 1999. Algae as water-quality indicators in the eastern USA. Part of symposium on Algae as Environmental Indicators: Past, Present and Future, XVI International Botanical Congress, Saint Louis, MO, August 6, 1999. Invited speaker. Charles, D. F. 1999. Large-scale variation in diatom assemblages in eastern US rivers and implications for water quality monitoring. Department of Geology, University of Delaware, Newark, DE. September 9, 1999. Charles, D. F. 1999. Diatom periphyton as indicators of cultivation and grazing impairment in Montana wetlands. 15th North American Diatom Symposium, Pingree Park Campus of Colorado State University, September 23-25, 1999. Charles, D. F. 1999. Large-scale variation in distribution of diatom algae in eastern U.S. rivers: implications for water quality monitoring. Sigma Xi sponsored seminar, ANSP, Philadelphia, PA. November 5, 1999,. Charles, D. F., P. B. Cotter, P. R. Sweets, T. J. Sullivan & K.B. Vaché. 2000. A Diatom Paleolimnology Data Cooperative (DPDC) for paleoclimate research. Poster. 8th International Paleolimnology Symposium, Queen's University (Kingston, Ontario), August 20-24, 2000. Charles, D. F., P. R. Sweets, T. J. Sullivan, P. B. Cotter and K. B. Vaché. 1999. A diatom paleolimnology data cooperative (DPDC) for paleoclimate research. 15th North American Diatom Symposium, Pingree Park Campus of Colorado State University, September 23-25, 1999. Charles, D. F. & K. Ponader. 2001. Biomonitoring with algae to measure nutrient loads to streams. Watershed Research Seminar, New Jersey Department of Environmental Protection, Trenton, NJ, March 2001. Charles, D. F. & M. G. Potapova. 2001. Influence of spatial and temporal scale on models for inferring nutrients in U.S. rivers from benthic diatom assemblages. North American Benthological Society, LaCrosse, WI, June 2-8, 2001. Charles, D. F. & M. G. Potapova. 2001. Analysis of diatom assemblages for the USGS NAWQA program. 16th North American Diatom Symposium, Ely, MN, September, 2001. Charles, D. F. & M. Potapova. 2000. Inferring phosphorus concentrations in USA rivers from diatom assemblages: initial results. 16th International diatom symposium, Athens, Greece, August 25-September 1, 2000. Clason, T. A., D. F. Charles, W. C. Hession, D. J. Velinski & T. E. Johnson. 1999. Ecological benefits of riparian reforestation in urban watersheds: evidence from diatom community analysis. 15th North American Diatom Symposium, Pingree Park Campus of Colorado State University, September 23-25, 1999. Cotter, P. B., D. F. Charles, P. R. Sweets, T. J. Sullivan & K. B. Vaché. 2000. A Diatom Paleolimnology Data Cooperative (DPDC) for paleoclimate research. Poster. 8th International Paleolimnology Symposium, Queen's University (Kingston, Ontario), August 20-24, 2000. Cotter, P. B., D. F. Charles, P. R. Sweets, T. J. Sullivan & K. B. Vaché. 2000. A Diatom Paleolimnology Data Cooperative (DPDC) for paleoclimate research. Poster. 16th International Diatom Symposium, Athens, Greece, August 25 -September 1, 2000. Flinders, C. A., D. D. Hart, D. F. Charles, D. J. Velinsky & R. L. Thomas. 2001. River restoration via pulsed flows: effects of increased water velocity on benthic algae. North American Benthological Society, LaCrosse, WI. June 2-8, 2001. Hart, D. D., K. L. Bushaw-Newton, S. Carney, D. F. Charles & 8 others. 2001. Manatawny Creek dam removal: species and community characteristics. North American Benthological Society, LaCrosse, WI. June 2-8, 2001. Hruška, J., D. F. Charles, E. Bízová & J. Veselý. 2000. How much acidification has occurred in Prášilské Lake since preindustrial times? Conference on Acidified Lakes in the Bohemian/Bavarian Forest - History, Present and Future, Ceske Budejovice, Czech Republic, March 2000. Johnson, T. E., W. C. Hession, D. F. Charles, R. J. Horwitz, D. A. Kreeger, B. D. Marshall, J. D. Newbold, J. E. Pizzuto & D. J. Velinsky. 2001. An interdisciplinary study of the ecological benefits of riparian reforestation in urban watersheds. World Water and Environmental Resources Congress (ASCE), Orlando, FL, May 20-24, 2001. Manoylov, K., E. A. Morales & E. F.Stoermer 2001. Staurosira stevensonii (Bacillariophyta) a new species from acidic environments. 16th North American Diatom Symposium. Camp du Nord, MN. Morales, E. A. 2001. The use of morphological characters in diatom taxonomy: alternative and complementary hypotheses concerning identity and relationships of taxa. 16th North American Diatom Symposium. Camp du Nord, MN. Morales, E. A. 2001. Utilización de diatomeas como indicadores de la calidad del agua. Universidad Mayor de San Simón, Facultad de Ciencias y Tecnología, Cochabamba, Bolivia (Invited Speaker). Morales, E. A. & F. R.Trainor. 2001. A new paradigm for freshwater fragilarioid diatom classification? A critique of Lange-Bertalot’s new system. 40th Northeast Algal Symposium. Plymouth, MA. Morales, E. A. & F. R. Trainor. 2001. A new paradigm for freshwater fragilarioid diatom classification? A critique of Lange-Bertalot’s new system (revisited). Phycological Society of America, Estes Park, CO . Ponader, K., R. Pienitz & K. Swadling. 1999. Paleolimnological analysis of environmental change in a subarctic lake in northwestern Québec. 15th North American Diatom Symposium, Pingree Park Campus, CO, September 1999. Ponader, K. & D. F. Charles. 2001. Diatoms as indicators of nutrient levels in New Jersey streams. 16th North American Diatom Symposium, Ely, MN, June 2001. Potapova, M. G. & D. F. Charles. 2001. Nutrient optima of diatom species in U.S. rivers. 16th North American Diatom Symposium, Ely, MN, September 19-22, 2001. Potapova, M. G. & D. F. Charles. 2000. Benthic diatoms in USA rivers: distribution patterns and use as indicators of eutrophication. 4th International Symposium on Use of Algae for Monitoring Rivers, Durham, UK, July 17-20. Potapova, M. G. & D. F. Charles. 2000. Patterns of diatom species distribution in USA rivers. 16th International Diatom Symposium, Athens, Greece, August 25 -September 1, 2000. Potapova, M., Ponader, K.C. & Clason, T.A. 2001. New Nupela species from eastern rivers of the United States. 16th North American Diatom Symposium, Ely, MN, September 2001. Winter, D. M. & M. G. Potapova. 2001. A study of three Geissleria Species common in rivers of the southeastern United States. 16th North American Diatom Symposium, Ely, MN. |