Sarah A. Spaulding, PhD (Former Employee)
Science and Products
Filter Total Items: 42
Reduction of taxonomic bias in diatom species data Reduction of taxonomic bias in diatom species data
Inconsistency in taxonomic identification and analyst bias impede the effective use of diatom data in regional and national stream and lake surveys. In this study, we evaluated the effect of existing protocols and a revised protocol on the precision of diatom species counts. The revised protocol adjusts four elements of sample preparation, taxon identification and enumeration, and...
Authors
Meredith Tyree, Ian W. Bishop, Charles P. Hawkins, Richard M. Mitchell, Sarah A. Spaulding
Diatom enumeration method influences biological assessments of southeastern USA streams Diatom enumeration method influences biological assessments of southeastern USA streams
Current fixed-count enumeration methods for benthic diatoms are likely inadequate for most research and monitoring objectives. These methods underestimate taxa richness and may fail to detect losses of species caused by human impacts. Consequently, the full potential of diatoms is not realized in current assessments of biological integrity or species diversity. In this study, we...
Authors
Meredith Tyree, Daren M. Carlisle, Sarah A. Spaulding
Taxonomic harmonization may reveal a stronger association between diatom assemblages and total phosphorus in large datasets Taxonomic harmonization may reveal a stronger association between diatom assemblages and total phosphorus in large datasets
Diatom data have been collected in large-scale biological assessments in the United States, such as the U.S. Environmental Protection Agency’s National Rivers and Streams Assessment (NRSA). However, the effectiveness of diatoms as indicators may suffer if inconsistent taxon identifications across different analysts obscure the relationships between assemblage composition and...
Authors
Sylvia S Lee, Ian W. Bishop, Sarah A. Spaulding, Richard M. Mitchell, Lester Yuan
A diatom voucher flora from selected southeast rivers (USA) A diatom voucher flora from selected southeast rivers (USA)
This flora is intended to serve as an image voucher for samples analyzed for the U.S. Geological Survey Southeast Stream Quality Assessment (SESQA). The SESQA study included measurement of watershed and water quality parameters to determine the factors that have the greatest potential to alter biotic condition. Algal samples were collected at 108 sites in 2014, from streams representing...
Authors
Ian W. Bishop, Rhea R.M. Esposito, Meredith Tyree, Sarah A. Spaulding
Paleolimnological records of nitrogen deposition in shallow, high-elevation lakes of Grand Teton National Park, Wyoming, USA Paleolimnological records of nitrogen deposition in shallow, high-elevation lakes of Grand Teton National Park, Wyoming, USA
Reactive nitrogen (Nr) from anthropogenic sources has been altering ecosystem function in lakes of the Rocky Mountains, other regions of western North America, and the Arctic over recent decades. The response of biota in shallow lakes to atmospheric deposition of Nr, however, has not been considered. Benthic algae are dominant in shallow, high-elevation lakes and are less sensitive to...
Authors
Sarah A. Spaulding, Megan K. Otu, Alexander P. Wolfe, Jill Baron
Holocene earthquakes and right-lateral slip on the left-lateral Darrington-Devils Mountain fault zone, northern Puget Sound, Washington Holocene earthquakes and right-lateral slip on the left-lateral Darrington-Devils Mountain fault zone, northern Puget Sound, Washington
Sources of seismic hazard in the Puget Sound region of northwestern Washington include deep earthquakes associated with the Cascadia subduction zone, and shallow earthquakes associated with some of the numerous crustal (upper-plate) faults that crisscross the region. Our paleoseismic investigations on one of the more prominent crustal faults, the Darrington–Devils Mountain fault zone...
Authors
Stephen F. Personius, Richard W. Briggs, Alan R. Nelson, Elizabeth R Schermer, J. Zebulon Maharrey, Brian L. Sherrod, Sarah A. Spaulding, Lee-Ann Bradley
Morphology, ecology and biogeography of Stauroneis pachycephala P.T. Cleve (Bacillariophyta) and its transfer to the genus Envekadea Morphology, ecology and biogeography of Stauroneis pachycephala P.T. Cleve (Bacillariophyta) and its transfer to the genus Envekadea
Stauroneis pachycephala was described in 1881 from the Baakens River, Port Elizabeth, South Africa. Recently, it was found during surveys of the MacKenzie River (Victoria, Australia), the Florida Everglades (USA) and coastal marshes of Louisiana (USA). The morphology, ecology and geographic distribution of this species are described in this article. This naviculoid species is...
Authors
Islam Atazadeh, Mark B. Edlund, Bart van de Vijver, Keely Mills, Sarah A. Spaulding, Peter A. Gell, Simon Crawford, Andrew F. Barton, Sylvia S. Lee, Kathryn E. L. Smith, Peter Newall, Marina Potapova
Response of brown-headed cowbirds and three host species to thinning treatments in low-elevation ponderosa pine forests along the northern Colorado Front Range Response of brown-headed cowbirds and three host species to thinning treatments in low-elevation ponderosa pine forests along the northern Colorado Front Range
Thinning ponderosa pine (Pinus ponderosa) forests to achieve desired ecological conditions remains a priority in the North American west. In addition to reducing the risk of high-severity wildfires in unwanted areas, stand thinning may increase wildlife and plant diversity and provide increased opportunity for seedling recruitment. We initiated conservative (i.e. minimal removal of trees...
Authors
W.H. Keeley, Steve Germaine, Thomas R. Stanley, Sarah A. Spaulding, C.E. Wanner
Automated measurement of diatom size Automated measurement of diatom size
Size analysis of diatom populations has not been widely considered, but it is a potentially powerful tool for understanding diatom life histories, population dynamics, and phylogenetic relationships. However, measuring cell dimensions on a light microscope is a time-consuming process. An alternative technique has been developed using digital flow cytometry on a FlowCAM® (Fluid Imaging...
Authors
Sarah A. Spaulding, David H. Jewson, Rebecca J. Bixby, Harry Nelson, Diane M. McKnight
Didymosphenia geminata: Algal blooms in oligotrophic streams and rivers Didymosphenia geminata: Algal blooms in oligotrophic streams and rivers
In recent decades, the diatom Didymosphenia geminata has emerged as nuisance species in river systems around the world. This periphytic alga forms large "blooms" in temperate streams, presenting a counterintuitive result: the blooms occur primarily in oligotrophic streams and rivers, where phosphorus (P) availability typically limits primary production. The goal of this study is to...
Authors
P.V. Sundareshwar, S. Upadhayay, M. Abessa, S. Honomichl, B. Berdanier, S. A. Spaulding, C. Sandvik, A. Trennepohl
Species within the genus Encyonema Kützing, including two new species Encyonema reimeri sp. nov. and E. nickcafei sp. nov. and E. stoermeri nom. nov., stat. nov Species within the genus Encyonema Kützing, including two new species Encyonema reimeri sp. nov. and E. nickcafei sp. nov. and E. stoermeri nom. nov., stat. nov
No abstract available.
Authors
S. A. Spaulding, J. R. Pool, S. I. Castro, F. Hinz
New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa
During a survey of the terrestrial diatom flora of some sub-Antarctic islands in the southern Indian and Atlantic Oceans and of the Antarctic continent, more than 15 taxa belonging to the genus Muelleria were observed. Nine of these taxa are described as new species using light and scanning electron microscopy. Comments are made on their systematic position and how they are distinguished...
Authors
B. Van De Vijver, G. Mataloni, L. Stanish, S. A. Spaulding
Non-USGS Publications**
Enache, M., Potapova, M.G., Tyree, M.A. and Spaulding, S.A. 2022. Aulacoseira novacaesarea sp. nov. (Bacillariophyta) a new centric diatom species from the northeastern United States. Diatom Research doi: 10.1080/0269249X.2022.2118834
Potapova, M.G., Lee, S.S., Spaulding, S.A. and Schulte, N.O. 2022. A harmonized dataset of sediment diatoms from hundreds of lakes in the northeast United States. Scientific Data-Nature 9:540 doi: 10.1038/s41597-022-01661-3
Li, D., Record, S., Sokol, E., Bitters, M.E., Chen, M.Y., Chung, Y.A., Helmus, M. Jaimes, R., Jansen, L., Jarzyna, M.A., Just, M.G., LaMontagne, J.M., Melbourne, B., Moss, W., Norman, K., Parker, S., Robinson, N., Seyednasrollah, B., Smith, C., Spaulding, S., Surasinghe, T., Thomsen, S., Zarnetske, P. 2022. Tidy NEON organismal data for biodiversity research. Ecosphere.
Nagy et al. 2021. Harnessing the NEON data revolution to advance open environmental science with a diverse and data-capable community. Ecosphere. doi: 10.1002/ecs2.3833
Hamsher, S.E., Kociolek, J.P., Spaulding, S.A. and Saleh, A.I. 2021. Taxonomy and nomenclature of members within the Obtusae section of Nitzschia Hassall (Bacillariophyceae) including descriptions of two new species. Fottea 2: 247-258. doi: 10.5507/fot.2021.010
Williams, D.M., Spaulding, S.A. and Bishop, I.W. 2021. Studies on type material from Kützing's diatom collection IV: The basionym, author and type of Tetracyclus rupestre. Phytotaxa. doi: 10.11646/phytotaxa.498.1.5
Benson, M.A., Smith, D.M. and Spaulding, S.A. 2021. Perspectives on the paleolimnology of the late Eocene Florissant lake from diatom and sedimentary records at Clare's Quarry, Teller County, Colorado, USA. Geological Society of America Proceedings. in Starratt, S.W. and Rosen, M.R., eds., From Saline to Freshwater: The Diversity of Western Lakes in Space and Time: Geological Society of America Special Paper 536.
Paul, M.J., Jessup, B., Brown, L., Carter, J., Cantonati, M., Charles, D.F., Gerritsen, J., Herbst, D., Hristova, R.S., Howard, J., Isham, B., Lowe, R., Mazor, R., Mendez, P., Ode, P., O'Dowd, A., Olson, J., Pan, Y., Rehn, A., Spaulding, S.A., Sutula, M. and Theroux, S. 2020. Characterizing benthic macroinvertebrate and algal biological condition gradient models for California wadeable streams, USA. Ecological Indicators 177: 106618. doi: 10.1016/j.ecolind.2020.106618
Meilijson, A., Hilgen, F., Sepúlveda, J., Steinberg, J., Flecker, R., Waldmann, N.D., Spaulding, S.A., Bialik, O.M., Ilner, P., Boudinot, F.G. and Makovsky, Y. 2019. Integrated stratigraphy of Messinian evaporites in the deep Eastern Mediterranean reveal long lasting halite deposition through Atlantic connectivity. Earth Science Reviews 194: 374-398
Lee, S.S., Bishop, I.W., Spaulding, S.A., Mitchell, R. and Yuan, L.L. 2019. Harmonization and revision of a national diatom dataset for use in the development of water quality indicators. Ecological Indicators 102:166-174.
Moser, J., Baron, J., Brahney, J., Olesky, I., Saros, J., Hundey, S., Sadro, S., Kopacek, Sommaruga, Kainze, Strecker, A., Chandra, D., Walters, D., Preston, Michelutti, N., Lepori, Spaulding, S., Hik, Christianson, Melack, J. and Smol, J. 2019. Mountain lakes: eyes on global environmental change. Global and Planetary Change 178: 77-95.
Bishop, I.W., Tucker, S.T., Joeckel, R.M. and Spaulding, S.A. 2018. Rare and diverse benthic fossil diatoms from the upper Ogallala Group (late Miocene) near Scotia, NE (USA) Nova Hedwigia, Beihefte 147: 261-294.
Bishop, I. and Spaulding, S.A. 2017. Seasonal population dynamics and size restoration in Didymosphenia geminata. Journal of Phycology 53: 652-663.
Spaulding, S.A. 2016. An uncertain synergy between atmospheric deposition and warming: high-elevation lakes of Grand Teton National Park. Mountain Views, Chronicles of the Consortium for Integrated Climate Research in Western Mountains 10(1)
Sakaeva, A., Stanish, L.F., Kohler, T.J., Spaulding, S.A., McKnight, D.M., Howkins, A., Welch, K.A., Lyons, W.B., Sokol, E.R. and Barrett, J.E. 2016. Evidence for dispersal and habitat controls on pond diatom communities in the McMurdo Sound Region of Antarctica. Polar Biology 1-16.
Bishop, I. and Spaulding, S.A. 2015. Tetracyclus hinziae (Bacillariophyta), a new species from the central Cascade Mountains (WA, USA). Phytotaxa 205(3). doi: 10.11646/phytotaxa.205.3.7
Bergey, E.A. and Spaulding. S.A. 2015. Didymosphenia: it’s more complicated. A response to the Forum article by Taylor and Bothwell (2014). Bioscience doi:10.1093/biosci/biu226
Cullis, J.D.S., McKnight, D.M. and Spaulding, S.A. 2015. Hydrodynamic control of benthic mats of Didymosphenia geminata at the reach scale. Canadian Journal of Fisheries and Aquatic Sciences 72(6): 902-914.
Personius, S.F., Briggs, R.W., Nelson, A.R., Schermer, E.R., Maharrey, J.Z., Sherrod, B.L., Spaulding, S.A. and Bradley, L. 2014. Holocene earthquakes and right-lateral slip on the left-lateral Darrington–Devils Mountain fault zone, northern Puget Sound, Washington. Geosphere doi: 10.1130/GES01067.1
Brahney, J., Spaulding, S, Ballantyne, A.P., Otu, M., Neff, J.C. 2014. Separating the influences of diagenesis, productivity, and anthropogenic nitrogen deposition on sedimentary d15N variations. Organic Geochemistry 75: 140-150.
Kociolek, J.P., Spaulding, S.A. and Lowe, R. 2015. Symmetrical Naviculoid Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Second Edition. Academic Press.
Brahney, J., Ballantyne, A., Kociolek, J.P., Spaulding, S.A., Otu, M., Porwall, T. and Neff, J.C. 2014. Dust mediated transfer of phosphorus to alpine lake ecosystems of the Wind River Range, Wyoming, USA. Biogeochemistry 120: 259-278.
Nakov, T., Ruck, E.C., Galachyants, Y., Spaulding, S.A. and Theriot, E. 2014. Molecular phylogeny of the Cymbellales (Heterokonthophyta: Bacillariophyceae) with a comparison of models for accommodating rate-variation across sites. Phycologia 53 (4): 359–373.
Benson, M.E., Kociolek, J.P., Spaulding, S.A., and Smith, D.M. 2012. Pre-Neogene (>23.8 MA) biochronology of non-marine diatoms, with an account of the late Eocene flora of the Florissant Formation, central Colorado, USA. Stratigraphy 9: 131-152.
Spaulding, S.A., Jewson, D., Bixby, R., Nelson, H. and McKnight, D.M. 2012. Automated measurement of diatom size. Limnology and Oceanography: Methods 10: 882-890.
Reid, B.L., Hernandez, K.L., Frangopoulis, M., Bauer, G., Lorca, M., Kilroy, C. and Spaulding, S.A. 2012. The invasion of the freshwater diatom Didymosphenia geminata in Patagonia: prospects, strategies, and implications for biosecurity of invasive species in continental waters. Conservation Letters doi: 10.1111/j.1755-263X.2012.00264.
Stanish, L.F., O’Neill, S.P., Gonzalez-Peña, A., Legg, T.M., Knelman, J., McKnight, D.M., Spaulding, S. and Nemergut, D.R. 2012. Bacterial-diatom community and co-occurrence relationships exist in microbial mats from polar desert streams. Environmental Microbiology doi: 10.1111/j.1462-2920.2012.02872.x.
Sundareshwar, P.V., Upadhayay, S., Abessa, M., Honomichl, S., Berdanier, B., Spaulding, S.A., Sandvik, C. and Trennepohl, A. 2011. Didymosphenia geminata: algal blooms in oligotrophic streams and rivers. Geophysical Research Letters 38: L10405, doi:10.1029/2010GL046599.
Spaulding, S.A., McKnight, D.M., Stanish, L., Van de Vijver, B. and Hodgson, D. 2010. Diatoms as indicators of environmental change in Antarctic and Sub-Antarctic freshwaters. In: Smol, J. and E.F. Stoermer (eds). The Diatoms: Applications for the Environmental and Earth Sciences. Cambridge University Press, Cambridge pp. 267-286.
Spaulding, S.A., Kilroy, C. and Edlund, M. 2010. Diatoms as invasive species. In: Smol, J. and E.F. Stoermer (eds). The Diatoms: Applications for the Environmental and Earth Sciences. Cambridge University Press, Cambridge pp. 560-569.
Rushforth, S.J., Edlund, M.B., Spaulding, S.A. and Stoermer, E.F. 2010. The Reimer Diatom Herbarium: an important resource for teaching and research. Proceedings of the Academy of Natural Sciences of Philadelphia.
Spaulding, S.A., Pool, J.R., Castro, S.I. and Hinz. 2010. Notes on species within the genus Encyonema Kützing, including two new species Encyonema reimeri sp. nov. and E. nickcafei sp. nov. and E. stoermeri nom. nov., stat. nov. Proceedings of the Academy of Natural Sciences of Philadelphia.
Morales, E.A., Edlund, M.B. and Spaulding, S.A. 2010. Description and ultrastructure of fragilarioid diatom species (Bacillariophyceae) morphologically similar to Pseudostaurosira elliptica (Schumann) Edlund et al. Phycological Research 58: 97-107.
Van de Vijver, B., Mataloni, G., Stanish L. and Spaulding, S.A. 2010. New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic Region and South Africa. Phycologia 49: 22-41.
Pite, D., Lane, K., Hermann, A, Spaulding, S.A. and Finney, B. 2009. Historical abundance and morphology of Didymosphenia geminata in Naknek Lake, Alaska. Acta Bot. Croat. 68: 183-197.
Kumar, S., Spaulding, S.A., Stohlgren, T., Hermann, K., Schmidt, T. and Bahls, L. 2009. Modelling the bioclimatic profile of the diatom Didymosphenia geminata. Frontiers in Ecology and the Environment. 8: 415-420.
Esposito, R.M.M., Spaulding, S.A., McKnight, D.M. , Lubinski, D. , Hall, B. , and Whittaker, T. 2008. Inland diatoms from the McMurdo Dry Valleys, Antarctica. Botany 86: 1378-1392.
Whittaker, T.E, Hall, B.L., Hendy, C.H. and Spaulding, S.A. 2008. Holocene surface-level changes and depositional environments at Lake Fryxell, Antarctica. The Holocene 18(5): 775-786.
Bothwell, M.L. and Spaulding, S.A. 2008. Synopsis: the 2007 International workshop on Didymosphenia geminata. Canadian Technical Report of Fisheries and Aquatic Sciences 2795.
Spaulding, S.A., Hermann, K.A. and Johnson, T. 2008. Confirmed distribution of Didymosphenia geminata (Lyngbye) Schmidt in North America. Proceedings, 2007 International Workshop on Didymosphenia geminata, Canadian Technical Report of Fisheries and Aquatic Sciences 2795.
Esposito, R. M. M., S. L. Horn, D. M. McKnight, M. J. Cox, M. C. Grant, S. A. Spaulding, P. T. Doran, and K. D. Cozzetto 2006. Antarctic climate cooling and response of diatoms in glacial meltwater streams, Geophys. Res. Lett., 33.
Edlund, M.B., E.A. Morales and S.A. Spaulding. 2006. The type and taxonomy of Fragilaria elliptica Schumann, a widely misconstrued taxon. Proceedings of the International Society of Diatom Research.
Edlund, M.B. and S.A. Spaulding. 2006. Restoration of maximum cell size by uniparental auxosporulation in Scoliopleura Grunow and Muelleria (Frenguelli) Frenguelli. In: Ognjanova-Rumenova and Manoylov (eds.), Fossil and Recent Phycological Studies, pp. 211-223
Kociolek, J.P., S.A. Spaulding, K. Sabbe, and W. Vyverman. 2004. New Gomphonema (Bacillariophyta) species from Tasmania. Phycologia 43:427-444.
Spaulding, S.A., A. Akbulut and J.P. Kociolek 2003. A new species of Aneumastus Mann and Stickle from Central Turkey. Diatom Research 18:149-160.
Kociolek, J.P. and S.A. Spaulding. 2002. Evolutionary relationships, species concepts and implications of two disparate freshwater, fossil centric diatoms (Bacillariophyta) from western North America. Journal of Phycology 38: 821-833.
Kociolek, J.P. and S.A. Spaulding. 2002. Symmetrical Naviculoid Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Academic Press. pp. 637-651.
Kociolek, J.P. and S.A. Spaulding. 2002. Eunotiod and Asymmetrical Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Academic Press. pp. 655-666.
Spaulding, S.A. and J.P. Kociolek. 2003. Freshwater diatoms (Bacillariophyceae) In: Goodman, S. and Benstead, J. (eds). Natural History of Madagascar, University of Chicago Press.
Spaulding, S.A., J.P. Kociolek and D. Davis. 2002. A new diatom genus from a playa lake in New Mexico, USA with the description of two new species. European Journal of Phycology 37: 135-143.
Stoermer, E.F, M. Julius, J.P. Kociolek and S.A. Spaulding. 2002. Centric Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Academic Press. pp. 559-562.
Strelnikova, N.I., E. Fourtanier, J.A. Barron, J.P. Kociolek, A. Mahood and S.A. Spaulding (2002). A species of the genus Coscinodiscus Ehrenberg from the Eocene of California. Proceedings of the 15th International Diatom Symposium, Ganter Verlag, Liechtenstein. pp. 359-380.
Kociolek, J.P., D. Lyon and S. Spaulding 2001. Revision of the South American species of Actinella In: Jahn, R., Kociolek, J.P., Witkowski , A. and Compère P. (eds). Lange-Bertalot-Festschrift: Studies on Diatoms, Koeltz Scientific Books, Koenigstein. pp. 131-166.
Kociolek, J.P. and S.A. Spaulding. 1999. Freshwater diatom biogeography. Nova Hedwigia 71: 223-241.
Spaulding, S.A., J.P. Kociolek and D. Wong. 1999. A taxonomic and systematic revision of the genus Muelleria (Bacillariophyta). Phycologia 38: 314-341.
Spaulding, S.A. and J.P. Kociolek. 1998. New Gomphonema species from Madagascar. Proceedings of the California Academy of Sciences 50: 361-379.
Spaulding, S.A. and J.P. Kociolek. 1998. The diatom genus Orthoseira: Ultrastructure and morphological variation in two species from Madagascar with comments on nomenclature in the genus. Diatom Research 13: 133-147.
Kociolek, J.P., S.A. Spaulding and J.C. Kingston. 1998. Valve morphology and systematic position of Navicula walkeri Sovereign, a diatom endemic to Oregon and California (USA) freshwaters. Nova Hedwigia.
Spaulding, S.A. and D. McKnight. 1998. Diatoms as Indicators of Environmental Change in Antarctic Freshwaters. In: Smol, J. and E.F. Stoermer (eds). The Diatoms: Applications for the Environmental and Earth Sciences. Cambridge University Press, Cambridge. pp. 249-263.
McKnight, D.M., A. Alger, C.M. Tate, G. Shupe and S.A. Spaulding. 1997. Longitudinal patterns in algal abundance and species distribution in meltwater streams in Taylor Valley, Southern Victorialand, Antarctica. In: Priscu, J. (ed.). American Geophysical Union, Antarctic Research Series.
Fountain, A. and S.A. Spaulding. 1997. Researchers pool knowledge about Antarctic Dry Valleys. EOS, Transactions, American Geophysical Union 78: 295-298.
Spaulding, S.A. and E.F. Stoermer. 1997. Taxonomy and distribution of the genus Muelleria Frenguelli. Diatom Research 12: 95-113.
Spaulding, S.A., D. McKnight, E.F. Stoermer and P.T. Doran. 1997. Sedimentary record of diatoms in Lake Hoare, Antarctica. Journal of Paleolimnology 17: 403-420.
Laybourn-Parry, J., M. James, D. McKnight, J. Priscu, S.A. Spaulding and R.Shiel. 1997. The microbial plankton of Lake Fryxell, southern Victoria Land, Antarctica during the summers of 1992 and 1994. Polar Biology 17: 54-61.
Spaulding, S.A. 1996. Algal investigations at varying temporal scales in an extreme environment: McMurdo Dry Valleys lakes, Antarctica. Ph. D. Thesis, Colorado State University.
McKnight, D.M., E.D. Andrews, S.A. Spaulding and G.R. Aiken. 1994. Aquatic fulvic acids in eutrophic coastal ponds in Antarctica and comparison with other aquatic fulvic acids. Limnology and Oceanography 39:1972-1979.
Spaulding, S.A., D.M. McKnight and R.L. Smith. 1994. Temporal dynamics of phytoplankton populations in perennially ice-covered Lake Fryxell. Journal of Plankton Research 16: 527-541.
Spaulding, S.A, J.V. Ward and J. Baron. 1993. Winter phytoplankton dynamics in a subalpine lake. Archiv für Hydrobiology 129: 179-198.
Spaulding, S.A., M.A. Harris, D.M. McKnight and B.D. Rosenlund. 1991. Aquatic Biota. In: J. Baron, Biogeochemisty of Loch Vale Watershed. Springer-Verlag, New York.
McKnight, D., R.L. Smith, J.P. Bradbury, J. Baron and S.A. Spaulding. 1990. Phytoplankton dynamics in three Rocky Mountain lakes. Arctic and Alpine Research 22: 264-274.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 42
Reduction of taxonomic bias in diatom species data Reduction of taxonomic bias in diatom species data
Inconsistency in taxonomic identification and analyst bias impede the effective use of diatom data in regional and national stream and lake surveys. In this study, we evaluated the effect of existing protocols and a revised protocol on the precision of diatom species counts. The revised protocol adjusts four elements of sample preparation, taxon identification and enumeration, and...
Authors
Meredith Tyree, Ian W. Bishop, Charles P. Hawkins, Richard M. Mitchell, Sarah A. Spaulding
Diatom enumeration method influences biological assessments of southeastern USA streams Diatom enumeration method influences biological assessments of southeastern USA streams
Current fixed-count enumeration methods for benthic diatoms are likely inadequate for most research and monitoring objectives. These methods underestimate taxa richness and may fail to detect losses of species caused by human impacts. Consequently, the full potential of diatoms is not realized in current assessments of biological integrity or species diversity. In this study, we...
Authors
Meredith Tyree, Daren M. Carlisle, Sarah A. Spaulding
Taxonomic harmonization may reveal a stronger association between diatom assemblages and total phosphorus in large datasets Taxonomic harmonization may reveal a stronger association between diatom assemblages and total phosphorus in large datasets
Diatom data have been collected in large-scale biological assessments in the United States, such as the U.S. Environmental Protection Agency’s National Rivers and Streams Assessment (NRSA). However, the effectiveness of diatoms as indicators may suffer if inconsistent taxon identifications across different analysts obscure the relationships between assemblage composition and...
Authors
Sylvia S Lee, Ian W. Bishop, Sarah A. Spaulding, Richard M. Mitchell, Lester Yuan
A diatom voucher flora from selected southeast rivers (USA) A diatom voucher flora from selected southeast rivers (USA)
This flora is intended to serve as an image voucher for samples analyzed for the U.S. Geological Survey Southeast Stream Quality Assessment (SESQA). The SESQA study included measurement of watershed and water quality parameters to determine the factors that have the greatest potential to alter biotic condition. Algal samples were collected at 108 sites in 2014, from streams representing...
Authors
Ian W. Bishop, Rhea R.M. Esposito, Meredith Tyree, Sarah A. Spaulding
Paleolimnological records of nitrogen deposition in shallow, high-elevation lakes of Grand Teton National Park, Wyoming, USA Paleolimnological records of nitrogen deposition in shallow, high-elevation lakes of Grand Teton National Park, Wyoming, USA
Reactive nitrogen (Nr) from anthropogenic sources has been altering ecosystem function in lakes of the Rocky Mountains, other regions of western North America, and the Arctic over recent decades. The response of biota in shallow lakes to atmospheric deposition of Nr, however, has not been considered. Benthic algae are dominant in shallow, high-elevation lakes and are less sensitive to...
Authors
Sarah A. Spaulding, Megan K. Otu, Alexander P. Wolfe, Jill Baron
Holocene earthquakes and right-lateral slip on the left-lateral Darrington-Devils Mountain fault zone, northern Puget Sound, Washington Holocene earthquakes and right-lateral slip on the left-lateral Darrington-Devils Mountain fault zone, northern Puget Sound, Washington
Sources of seismic hazard in the Puget Sound region of northwestern Washington include deep earthquakes associated with the Cascadia subduction zone, and shallow earthquakes associated with some of the numerous crustal (upper-plate) faults that crisscross the region. Our paleoseismic investigations on one of the more prominent crustal faults, the Darrington–Devils Mountain fault zone...
Authors
Stephen F. Personius, Richard W. Briggs, Alan R. Nelson, Elizabeth R Schermer, J. Zebulon Maharrey, Brian L. Sherrod, Sarah A. Spaulding, Lee-Ann Bradley
Morphology, ecology and biogeography of Stauroneis pachycephala P.T. Cleve (Bacillariophyta) and its transfer to the genus Envekadea Morphology, ecology and biogeography of Stauroneis pachycephala P.T. Cleve (Bacillariophyta) and its transfer to the genus Envekadea
Stauroneis pachycephala was described in 1881 from the Baakens River, Port Elizabeth, South Africa. Recently, it was found during surveys of the MacKenzie River (Victoria, Australia), the Florida Everglades (USA) and coastal marshes of Louisiana (USA). The morphology, ecology and geographic distribution of this species are described in this article. This naviculoid species is...
Authors
Islam Atazadeh, Mark B. Edlund, Bart van de Vijver, Keely Mills, Sarah A. Spaulding, Peter A. Gell, Simon Crawford, Andrew F. Barton, Sylvia S. Lee, Kathryn E. L. Smith, Peter Newall, Marina Potapova
Response of brown-headed cowbirds and three host species to thinning treatments in low-elevation ponderosa pine forests along the northern Colorado Front Range Response of brown-headed cowbirds and three host species to thinning treatments in low-elevation ponderosa pine forests along the northern Colorado Front Range
Thinning ponderosa pine (Pinus ponderosa) forests to achieve desired ecological conditions remains a priority in the North American west. In addition to reducing the risk of high-severity wildfires in unwanted areas, stand thinning may increase wildlife and plant diversity and provide increased opportunity for seedling recruitment. We initiated conservative (i.e. minimal removal of trees...
Authors
W.H. Keeley, Steve Germaine, Thomas R. Stanley, Sarah A. Spaulding, C.E. Wanner
Automated measurement of diatom size Automated measurement of diatom size
Size analysis of diatom populations has not been widely considered, but it is a potentially powerful tool for understanding diatom life histories, population dynamics, and phylogenetic relationships. However, measuring cell dimensions on a light microscope is a time-consuming process. An alternative technique has been developed using digital flow cytometry on a FlowCAM® (Fluid Imaging...
Authors
Sarah A. Spaulding, David H. Jewson, Rebecca J. Bixby, Harry Nelson, Diane M. McKnight
Didymosphenia geminata: Algal blooms in oligotrophic streams and rivers Didymosphenia geminata: Algal blooms in oligotrophic streams and rivers
In recent decades, the diatom Didymosphenia geminata has emerged as nuisance species in river systems around the world. This periphytic alga forms large "blooms" in temperate streams, presenting a counterintuitive result: the blooms occur primarily in oligotrophic streams and rivers, where phosphorus (P) availability typically limits primary production. The goal of this study is to...
Authors
P.V. Sundareshwar, S. Upadhayay, M. Abessa, S. Honomichl, B. Berdanier, S. A. Spaulding, C. Sandvik, A. Trennepohl
Species within the genus Encyonema Kützing, including two new species Encyonema reimeri sp. nov. and E. nickcafei sp. nov. and E. stoermeri nom. nov., stat. nov Species within the genus Encyonema Kützing, including two new species Encyonema reimeri sp. nov. and E. nickcafei sp. nov. and E. stoermeri nom. nov., stat. nov
No abstract available.
Authors
S. A. Spaulding, J. R. Pool, S. I. Castro, F. Hinz
New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa
During a survey of the terrestrial diatom flora of some sub-Antarctic islands in the southern Indian and Atlantic Oceans and of the Antarctic continent, more than 15 taxa belonging to the genus Muelleria were observed. Nine of these taxa are described as new species using light and scanning electron microscopy. Comments are made on their systematic position and how they are distinguished...
Authors
B. Van De Vijver, G. Mataloni, L. Stanish, S. A. Spaulding
Non-USGS Publications**
Enache, M., Potapova, M.G., Tyree, M.A. and Spaulding, S.A. 2022. Aulacoseira novacaesarea sp. nov. (Bacillariophyta) a new centric diatom species from the northeastern United States. Diatom Research doi: 10.1080/0269249X.2022.2118834
Potapova, M.G., Lee, S.S., Spaulding, S.A. and Schulte, N.O. 2022. A harmonized dataset of sediment diatoms from hundreds of lakes in the northeast United States. Scientific Data-Nature 9:540 doi: 10.1038/s41597-022-01661-3
Li, D., Record, S., Sokol, E., Bitters, M.E., Chen, M.Y., Chung, Y.A., Helmus, M. Jaimes, R., Jansen, L., Jarzyna, M.A., Just, M.G., LaMontagne, J.M., Melbourne, B., Moss, W., Norman, K., Parker, S., Robinson, N., Seyednasrollah, B., Smith, C., Spaulding, S., Surasinghe, T., Thomsen, S., Zarnetske, P. 2022. Tidy NEON organismal data for biodiversity research. Ecosphere.
Nagy et al. 2021. Harnessing the NEON data revolution to advance open environmental science with a diverse and data-capable community. Ecosphere. doi: 10.1002/ecs2.3833
Hamsher, S.E., Kociolek, J.P., Spaulding, S.A. and Saleh, A.I. 2021. Taxonomy and nomenclature of members within the Obtusae section of Nitzschia Hassall (Bacillariophyceae) including descriptions of two new species. Fottea 2: 247-258. doi: 10.5507/fot.2021.010
Williams, D.M., Spaulding, S.A. and Bishop, I.W. 2021. Studies on type material from Kützing's diatom collection IV: The basionym, author and type of Tetracyclus rupestre. Phytotaxa. doi: 10.11646/phytotaxa.498.1.5
Benson, M.A., Smith, D.M. and Spaulding, S.A. 2021. Perspectives on the paleolimnology of the late Eocene Florissant lake from diatom and sedimentary records at Clare's Quarry, Teller County, Colorado, USA. Geological Society of America Proceedings. in Starratt, S.W. and Rosen, M.R., eds., From Saline to Freshwater: The Diversity of Western Lakes in Space and Time: Geological Society of America Special Paper 536.
Paul, M.J., Jessup, B., Brown, L., Carter, J., Cantonati, M., Charles, D.F., Gerritsen, J., Herbst, D., Hristova, R.S., Howard, J., Isham, B., Lowe, R., Mazor, R., Mendez, P., Ode, P., O'Dowd, A., Olson, J., Pan, Y., Rehn, A., Spaulding, S.A., Sutula, M. and Theroux, S. 2020. Characterizing benthic macroinvertebrate and algal biological condition gradient models for California wadeable streams, USA. Ecological Indicators 177: 106618. doi: 10.1016/j.ecolind.2020.106618
Meilijson, A., Hilgen, F., Sepúlveda, J., Steinberg, J., Flecker, R., Waldmann, N.D., Spaulding, S.A., Bialik, O.M., Ilner, P., Boudinot, F.G. and Makovsky, Y. 2019. Integrated stratigraphy of Messinian evaporites in the deep Eastern Mediterranean reveal long lasting halite deposition through Atlantic connectivity. Earth Science Reviews 194: 374-398
Lee, S.S., Bishop, I.W., Spaulding, S.A., Mitchell, R. and Yuan, L.L. 2019. Harmonization and revision of a national diatom dataset for use in the development of water quality indicators. Ecological Indicators 102:166-174.
Moser, J., Baron, J., Brahney, J., Olesky, I., Saros, J., Hundey, S., Sadro, S., Kopacek, Sommaruga, Kainze, Strecker, A., Chandra, D., Walters, D., Preston, Michelutti, N., Lepori, Spaulding, S., Hik, Christianson, Melack, J. and Smol, J. 2019. Mountain lakes: eyes on global environmental change. Global and Planetary Change 178: 77-95.
Bishop, I.W., Tucker, S.T., Joeckel, R.M. and Spaulding, S.A. 2018. Rare and diverse benthic fossil diatoms from the upper Ogallala Group (late Miocene) near Scotia, NE (USA) Nova Hedwigia, Beihefte 147: 261-294.
Bishop, I. and Spaulding, S.A. 2017. Seasonal population dynamics and size restoration in Didymosphenia geminata. Journal of Phycology 53: 652-663.
Spaulding, S.A. 2016. An uncertain synergy between atmospheric deposition and warming: high-elevation lakes of Grand Teton National Park. Mountain Views, Chronicles of the Consortium for Integrated Climate Research in Western Mountains 10(1)
Sakaeva, A., Stanish, L.F., Kohler, T.J., Spaulding, S.A., McKnight, D.M., Howkins, A., Welch, K.A., Lyons, W.B., Sokol, E.R. and Barrett, J.E. 2016. Evidence for dispersal and habitat controls on pond diatom communities in the McMurdo Sound Region of Antarctica. Polar Biology 1-16.
Bishop, I. and Spaulding, S.A. 2015. Tetracyclus hinziae (Bacillariophyta), a new species from the central Cascade Mountains (WA, USA). Phytotaxa 205(3). doi: 10.11646/phytotaxa.205.3.7
Bergey, E.A. and Spaulding. S.A. 2015. Didymosphenia: it’s more complicated. A response to the Forum article by Taylor and Bothwell (2014). Bioscience doi:10.1093/biosci/biu226
Cullis, J.D.S., McKnight, D.M. and Spaulding, S.A. 2015. Hydrodynamic control of benthic mats of Didymosphenia geminata at the reach scale. Canadian Journal of Fisheries and Aquatic Sciences 72(6): 902-914.
Personius, S.F., Briggs, R.W., Nelson, A.R., Schermer, E.R., Maharrey, J.Z., Sherrod, B.L., Spaulding, S.A. and Bradley, L. 2014. Holocene earthquakes and right-lateral slip on the left-lateral Darrington–Devils Mountain fault zone, northern Puget Sound, Washington. Geosphere doi: 10.1130/GES01067.1
Brahney, J., Spaulding, S, Ballantyne, A.P., Otu, M., Neff, J.C. 2014. Separating the influences of diagenesis, productivity, and anthropogenic nitrogen deposition on sedimentary d15N variations. Organic Geochemistry 75: 140-150.
Kociolek, J.P., Spaulding, S.A. and Lowe, R. 2015. Symmetrical Naviculoid Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Second Edition. Academic Press.
Brahney, J., Ballantyne, A., Kociolek, J.P., Spaulding, S.A., Otu, M., Porwall, T. and Neff, J.C. 2014. Dust mediated transfer of phosphorus to alpine lake ecosystems of the Wind River Range, Wyoming, USA. Biogeochemistry 120: 259-278.
Nakov, T., Ruck, E.C., Galachyants, Y., Spaulding, S.A. and Theriot, E. 2014. Molecular phylogeny of the Cymbellales (Heterokonthophyta: Bacillariophyceae) with a comparison of models for accommodating rate-variation across sites. Phycologia 53 (4): 359–373.
Benson, M.E., Kociolek, J.P., Spaulding, S.A., and Smith, D.M. 2012. Pre-Neogene (>23.8 MA) biochronology of non-marine diatoms, with an account of the late Eocene flora of the Florissant Formation, central Colorado, USA. Stratigraphy 9: 131-152.
Spaulding, S.A., Jewson, D., Bixby, R., Nelson, H. and McKnight, D.M. 2012. Automated measurement of diatom size. Limnology and Oceanography: Methods 10: 882-890.
Reid, B.L., Hernandez, K.L., Frangopoulis, M., Bauer, G., Lorca, M., Kilroy, C. and Spaulding, S.A. 2012. The invasion of the freshwater diatom Didymosphenia geminata in Patagonia: prospects, strategies, and implications for biosecurity of invasive species in continental waters. Conservation Letters doi: 10.1111/j.1755-263X.2012.00264.
Stanish, L.F., O’Neill, S.P., Gonzalez-Peña, A., Legg, T.M., Knelman, J., McKnight, D.M., Spaulding, S. and Nemergut, D.R. 2012. Bacterial-diatom community and co-occurrence relationships exist in microbial mats from polar desert streams. Environmental Microbiology doi: 10.1111/j.1462-2920.2012.02872.x.
Sundareshwar, P.V., Upadhayay, S., Abessa, M., Honomichl, S., Berdanier, B., Spaulding, S.A., Sandvik, C. and Trennepohl, A. 2011. Didymosphenia geminata: algal blooms in oligotrophic streams and rivers. Geophysical Research Letters 38: L10405, doi:10.1029/2010GL046599.
Spaulding, S.A., McKnight, D.M., Stanish, L., Van de Vijver, B. and Hodgson, D. 2010. Diatoms as indicators of environmental change in Antarctic and Sub-Antarctic freshwaters. In: Smol, J. and E.F. Stoermer (eds). The Diatoms: Applications for the Environmental and Earth Sciences. Cambridge University Press, Cambridge pp. 267-286.
Spaulding, S.A., Kilroy, C. and Edlund, M. 2010. Diatoms as invasive species. In: Smol, J. and E.F. Stoermer (eds). The Diatoms: Applications for the Environmental and Earth Sciences. Cambridge University Press, Cambridge pp. 560-569.
Rushforth, S.J., Edlund, M.B., Spaulding, S.A. and Stoermer, E.F. 2010. The Reimer Diatom Herbarium: an important resource for teaching and research. Proceedings of the Academy of Natural Sciences of Philadelphia.
Spaulding, S.A., Pool, J.R., Castro, S.I. and Hinz. 2010. Notes on species within the genus Encyonema Kützing, including two new species Encyonema reimeri sp. nov. and E. nickcafei sp. nov. and E. stoermeri nom. nov., stat. nov. Proceedings of the Academy of Natural Sciences of Philadelphia.
Morales, E.A., Edlund, M.B. and Spaulding, S.A. 2010. Description and ultrastructure of fragilarioid diatom species (Bacillariophyceae) morphologically similar to Pseudostaurosira elliptica (Schumann) Edlund et al. Phycological Research 58: 97-107.
Van de Vijver, B., Mataloni, G., Stanish L. and Spaulding, S.A. 2010. New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic Region and South Africa. Phycologia 49: 22-41.
Pite, D., Lane, K., Hermann, A, Spaulding, S.A. and Finney, B. 2009. Historical abundance and morphology of Didymosphenia geminata in Naknek Lake, Alaska. Acta Bot. Croat. 68: 183-197.
Kumar, S., Spaulding, S.A., Stohlgren, T., Hermann, K., Schmidt, T. and Bahls, L. 2009. Modelling the bioclimatic profile of the diatom Didymosphenia geminata. Frontiers in Ecology and the Environment. 8: 415-420.
Esposito, R.M.M., Spaulding, S.A., McKnight, D.M. , Lubinski, D. , Hall, B. , and Whittaker, T. 2008. Inland diatoms from the McMurdo Dry Valleys, Antarctica. Botany 86: 1378-1392.
Whittaker, T.E, Hall, B.L., Hendy, C.H. and Spaulding, S.A. 2008. Holocene surface-level changes and depositional environments at Lake Fryxell, Antarctica. The Holocene 18(5): 775-786.
Bothwell, M.L. and Spaulding, S.A. 2008. Synopsis: the 2007 International workshop on Didymosphenia geminata. Canadian Technical Report of Fisheries and Aquatic Sciences 2795.
Spaulding, S.A., Hermann, K.A. and Johnson, T. 2008. Confirmed distribution of Didymosphenia geminata (Lyngbye) Schmidt in North America. Proceedings, 2007 International Workshop on Didymosphenia geminata, Canadian Technical Report of Fisheries and Aquatic Sciences 2795.
Esposito, R. M. M., S. L. Horn, D. M. McKnight, M. J. Cox, M. C. Grant, S. A. Spaulding, P. T. Doran, and K. D. Cozzetto 2006. Antarctic climate cooling and response of diatoms in glacial meltwater streams, Geophys. Res. Lett., 33.
Edlund, M.B., E.A. Morales and S.A. Spaulding. 2006. The type and taxonomy of Fragilaria elliptica Schumann, a widely misconstrued taxon. Proceedings of the International Society of Diatom Research.
Edlund, M.B. and S.A. Spaulding. 2006. Restoration of maximum cell size by uniparental auxosporulation in Scoliopleura Grunow and Muelleria (Frenguelli) Frenguelli. In: Ognjanova-Rumenova and Manoylov (eds.), Fossil and Recent Phycological Studies, pp. 211-223
Kociolek, J.P., S.A. Spaulding, K. Sabbe, and W. Vyverman. 2004. New Gomphonema (Bacillariophyta) species from Tasmania. Phycologia 43:427-444.
Spaulding, S.A., A. Akbulut and J.P. Kociolek 2003. A new species of Aneumastus Mann and Stickle from Central Turkey. Diatom Research 18:149-160.
Kociolek, J.P. and S.A. Spaulding. 2002. Evolutionary relationships, species concepts and implications of two disparate freshwater, fossil centric diatoms (Bacillariophyta) from western North America. Journal of Phycology 38: 821-833.
Kociolek, J.P. and S.A. Spaulding. 2002. Symmetrical Naviculoid Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Academic Press. pp. 637-651.
Kociolek, J.P. and S.A. Spaulding. 2002. Eunotiod and Asymmetrical Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Academic Press. pp. 655-666.
Spaulding, S.A. and J.P. Kociolek. 2003. Freshwater diatoms (Bacillariophyceae) In: Goodman, S. and Benstead, J. (eds). Natural History of Madagascar, University of Chicago Press.
Spaulding, S.A., J.P. Kociolek and D. Davis. 2002. A new diatom genus from a playa lake in New Mexico, USA with the description of two new species. European Journal of Phycology 37: 135-143.
Stoermer, E.F, M. Julius, J.P. Kociolek and S.A. Spaulding. 2002. Centric Diatoms. In: Sheath, R. and Wehr, J. (eds). Freshwater Algae of North America, Academic Press. pp. 559-562.
Strelnikova, N.I., E. Fourtanier, J.A. Barron, J.P. Kociolek, A. Mahood and S.A. Spaulding (2002). A species of the genus Coscinodiscus Ehrenberg from the Eocene of California. Proceedings of the 15th International Diatom Symposium, Ganter Verlag, Liechtenstein. pp. 359-380.
Kociolek, J.P., D. Lyon and S. Spaulding 2001. Revision of the South American species of Actinella In: Jahn, R., Kociolek, J.P., Witkowski , A. and Compère P. (eds). Lange-Bertalot-Festschrift: Studies on Diatoms, Koeltz Scientific Books, Koenigstein. pp. 131-166.
Kociolek, J.P. and S.A. Spaulding. 1999. Freshwater diatom biogeography. Nova Hedwigia 71: 223-241.
Spaulding, S.A., J.P. Kociolek and D. Wong. 1999. A taxonomic and systematic revision of the genus Muelleria (Bacillariophyta). Phycologia 38: 314-341.
Spaulding, S.A. and J.P. Kociolek. 1998. New Gomphonema species from Madagascar. Proceedings of the California Academy of Sciences 50: 361-379.
Spaulding, S.A. and J.P. Kociolek. 1998. The diatom genus Orthoseira: Ultrastructure and morphological variation in two species from Madagascar with comments on nomenclature in the genus. Diatom Research 13: 133-147.
Kociolek, J.P., S.A. Spaulding and J.C. Kingston. 1998. Valve morphology and systematic position of Navicula walkeri Sovereign, a diatom endemic to Oregon and California (USA) freshwaters. Nova Hedwigia.
Spaulding, S.A. and D. McKnight. 1998. Diatoms as Indicators of Environmental Change in Antarctic Freshwaters. In: Smol, J. and E.F. Stoermer (eds). The Diatoms: Applications for the Environmental and Earth Sciences. Cambridge University Press, Cambridge. pp. 249-263.
McKnight, D.M., A. Alger, C.M. Tate, G. Shupe and S.A. Spaulding. 1997. Longitudinal patterns in algal abundance and species distribution in meltwater streams in Taylor Valley, Southern Victorialand, Antarctica. In: Priscu, J. (ed.). American Geophysical Union, Antarctic Research Series.
Fountain, A. and S.A. Spaulding. 1997. Researchers pool knowledge about Antarctic Dry Valleys. EOS, Transactions, American Geophysical Union 78: 295-298.
Spaulding, S.A. and E.F. Stoermer. 1997. Taxonomy and distribution of the genus Muelleria Frenguelli. Diatom Research 12: 95-113.
Spaulding, S.A., D. McKnight, E.F. Stoermer and P.T. Doran. 1997. Sedimentary record of diatoms in Lake Hoare, Antarctica. Journal of Paleolimnology 17: 403-420.
Laybourn-Parry, J., M. James, D. McKnight, J. Priscu, S.A. Spaulding and R.Shiel. 1997. The microbial plankton of Lake Fryxell, southern Victoria Land, Antarctica during the summers of 1992 and 1994. Polar Biology 17: 54-61.
Spaulding, S.A. 1996. Algal investigations at varying temporal scales in an extreme environment: McMurdo Dry Valleys lakes, Antarctica. Ph. D. Thesis, Colorado State University.
McKnight, D.M., E.D. Andrews, S.A. Spaulding and G.R. Aiken. 1994. Aquatic fulvic acids in eutrophic coastal ponds in Antarctica and comparison with other aquatic fulvic acids. Limnology and Oceanography 39:1972-1979.
Spaulding, S.A., D.M. McKnight and R.L. Smith. 1994. Temporal dynamics of phytoplankton populations in perennially ice-covered Lake Fryxell. Journal of Plankton Research 16: 527-541.
Spaulding, S.A, J.V. Ward and J. Baron. 1993. Winter phytoplankton dynamics in a subalpine lake. Archiv für Hydrobiology 129: 179-198.
Spaulding, S.A., M.A. Harris, D.M. McKnight and B.D. Rosenlund. 1991. Aquatic Biota. In: J. Baron, Biogeochemisty of Loch Vale Watershed. Springer-Verlag, New York.
McKnight, D., R.L. Smith, J.P. Bradbury, J. Baron and S.A. Spaulding. 1990. Phytoplankton dynamics in three Rocky Mountain lakes. Arctic and Alpine Research 22: 264-274.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government