Sarah A. Spaulding, PhD (Former Employee)
Science and Products
Filter Total Items: 42
Species within the Genus Encyonema Kützing, Including Two New Species Encyonema reimeri sp. nov. and E. nicafei 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. nicafei sp. nov. and E. stoermeri nom. nov., stat. nov.
We observed six diatom taxa from North American samples and one taxon from China that are considered within the genus Encyonema Kützing. Two of the taxa are described as new, Encyonema reimeri Spaulding, Pool et Castro sp. nov. and Encyonema nicafei Spaulding sp. nov. A third taxon, Encyonema stoermeri Spaulding, Pool et Castro nom. nov., shat. nov. is assigned a new name and rank. In...
Authors
S. A. Spaulding, J. R. Pool, S. I. Castro, F. Hinz
The Reimer Diatom Herbarium: An important resource for teaching and research The Reimer Diatom Herbarium: An important resource for teaching and research
The Reimer Diatom Herbarium (ILH) at Iowa Lakeside Laboratory (ILL), a field station of Iowa's state universities, contains 3,280 permanent diatom slides of collections made from prairie potholes, alkaline fens, acid bogs, eutrophic lakes, saline lakes, Pleistocene paleolakes, and Miocene fossil deposits near ILL. The herbarium has a focus on collections made within Dickinson County, a...
Authors
S.J. Rushforth, M.B. Edlund, S. A. Spaulding, E. F. Stoermer
Historical abundance and morphology of Didymosphenia species in Naknek Lake, Alaska Historical abundance and morphology of Didymosphenia species in Naknek Lake, Alaska
Since the 1980s, nuisance blooms of Didymosphenia geminata (Lyngbye) M. Schmidt have been documented in sites that are warmer and more mesotrophic than historical records indicate. While the invasion of D. geminata in New Zealand is well documented, it is less clear whether nuisance blooms in North America are a new phenomenon. In order to test the hypothesis that D. geminata blooms have...
Authors
D.P. Pite, K.A. Lane, A.K. Hermann, S. A. Spaulding, B. P. Finney
Potential habitat distribution for the freshwater diatom Didymosphenia geminata in the continental US Potential habitat distribution for the freshwater diatom Didymosphenia geminata in the continental US
The diatom Didymosphenia geminata is a single-celled alga found in lakes, streams, and rivers. Nuisance blooms of D geminata affect the diversity, abundance, and productivity of other aquatic organisms. Because D geminata can be transported by humans on waders and other gear, accurate spatial prediction of habitat suitability is urgently needed for early detection and rapid response, as...
Authors
S. Kumar, S. A. Spaulding, T.J. Stohlgren, K.A. Hermann, T.S. Schmidt, L.L. Bahls
Holocene depositional environments and surface-level changes at Lake Fryxell, Antarctica Holocene depositional environments and surface-level changes at Lake Fryxell, Antarctica
We report on Holocene surface-level variations of Lake Fryxell, Antarctica, as determined from multi-proxy analyses of 18 sediment cores. During this time accumulating sediments were predominantly aeolian sand with algal and carbonate laminae. Based on stratigraphy, mineralogy and diatom assemblages we suggest some carbonate laminae were deposited when lake level dropped, leading to...
Authors
T.E. Whittaker, B.L. Hall, C.H. Hendy, S. A. Spaulding
Inland diatoms from the McMurdo Dry Valleys and James Ross Island, Antarctica Inland diatoms from the McMurdo Dry Valleys and James Ross Island, Antarctica
Diatom taxa present in the inland streams and lakes of the McMurdo Dry Valleys and James Ross Island, Antarctica, are presented in this paper. A total of nine taxa are illustrated, with descriptions of four new species (Luticola austroatlantica sp. nov., Luticola dolia sp. nov., Luticola laeta sp. nov., Muelleria supra sp. nov.). In the perennially ice-covered lakes of the McMurdo Dry...
Authors
R.M.M. Esposito, S. A. Spaulding, Diane M. McKnight, B. Van De Vijver, K. Kopalova, D. Lubinski, B. Hall, T. Whittaker
Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymosphenia geminata Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymosphenia geminata
The diatom Didymosphenia geminata (Lyngbye) Schmidt is emerging as an organism with an extraordinary capacity to impact stream ecosystems on a global scale. In recent years, streams in New Zealand, North America, Europe, and Asia have been colonized by unprecedented masses of “didymo” and its extracellular stalks (fig. 1). This diatom is able to dominate stream surfaces by covering up to...
Authors
S. A. Spaulding, E. Elwell
Antarctic climate cooling and response of diatoms in glacial meltwater streams Antarctic climate cooling and response of diatoms in glacial meltwater streams
To understand biotic responses to an Antarctic cooling trend diatom samples from glacial meltwater streams in the McMurdo Dry Valleys, the largest ice-free area in Antarctica. Diatoms are abundant in these streams, and 24 of 40 species have only been found in the Antarctic. The percentage of these Antarctic diatom species increased with decreasing annual stream flow and increasing...
Authors
R.M.M. Esposito, S.L. Horn, Diane M. McKnight, M.J. Cox, M.C. Grant, S. A. Spaulding, P.T. Doran, K.D. Cozzetto
Scientific issues relating to temperature criteria for salmon, trout, char native to the Pacific Northwest Scientific issues relating to temperature criteria for salmon, trout, char native to the Pacific Northwest
Abstract not available
Authors
G. Poole, J. Dunham, M. Hicks, D. Keenan, J. Lockwood, E. Materna, D. McCullough, C. Mebane, J. Risley, S. Sauter, S. Spaulding, D. Sturdevant
Bathymetric, geophysical and geologic sample data from Medicine Lake, Siskiyou County, northern California Bathymetric, geophysical and geologic sample data from Medicine Lake, Siskiyou County, northern California
In September, 1999, the U.S. Geological Survey acquired high-resolution bathymetry, seismic reflection profiles, and geologic sample data from Medicine Lake, a high altitude (2,036 m) lake located within the summit caldera/basin at Medicine Lake volcano (MLV), a dormant Quaternary shield volcano located in the Cascade Range, 50 km northeast of Mt. Shasta. It last erupted less than 1000...
Authors
Jonathan R. Childs, J. B. Lowenstern, R. L. Phillips, P. E. Hart, J. J. Rytuba, J. A. Barron, S. W. Starratt, Sarah Spaulding
Valve morphology and systematic position of Navicula walkeri (Bacillariophyceae), a diatom endemic to Oregon and California (USA) Valve morphology and systematic position of Navicula walkeri (Bacillariophyceae), a diatom endemic to Oregon and California (USA)
Variation in valve size and ultrastructure is documented for Navicula walkeri, a freshwater diatom species endemic to Oregon and central California (USA). In LM, this large diatom has longitudinal lines on either side of the axial area, as well as lineolate striae. External proximal raphe ends recurve toward the same side as the deflected distal ends. A large central nodule and bulbous...
Authors
J.P. Kociolek, S. A. Spaulding, J.C. Kingston
Diatoms in sediments of perennially ice-covered Lake Hoare, and implications for interpreting lake history in the McMurdo Dry Valleys of Antarctica Diatoms in sediments of perennially ice-covered Lake Hoare, and implications for interpreting lake history in the McMurdo Dry Valleys of Antarctica
Diatom assemblages in surficial sediments, sediment cores, sediment traps, and inflowing streams of perennially ice-covered Lake Hore, South Victorialand, Antarctica were examined to determine the distribution of diatom taxa, and to ascertain if diatom species composition has changed over time. Lake Hoare is a closed-basin lake with an area of 1.8 km2, maximum depth of 34 m, and mean...
Authors
S. A. Spaulding, Diane M. McKnight, E. F. Stoermer, P.T. Doran
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
Species within the Genus Encyonema Kützing, Including Two New Species Encyonema reimeri sp. nov. and E. nicafei 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. nicafei sp. nov. and E. stoermeri nom. nov., stat. nov.
We observed six diatom taxa from North American samples and one taxon from China that are considered within the genus Encyonema Kützing. Two of the taxa are described as new, Encyonema reimeri Spaulding, Pool et Castro sp. nov. and Encyonema nicafei Spaulding sp. nov. A third taxon, Encyonema stoermeri Spaulding, Pool et Castro nom. nov., shat. nov. is assigned a new name and rank. In...
Authors
S. A. Spaulding, J. R. Pool, S. I. Castro, F. Hinz
The Reimer Diatom Herbarium: An important resource for teaching and research The Reimer Diatom Herbarium: An important resource for teaching and research
The Reimer Diatom Herbarium (ILH) at Iowa Lakeside Laboratory (ILL), a field station of Iowa's state universities, contains 3,280 permanent diatom slides of collections made from prairie potholes, alkaline fens, acid bogs, eutrophic lakes, saline lakes, Pleistocene paleolakes, and Miocene fossil deposits near ILL. The herbarium has a focus on collections made within Dickinson County, a...
Authors
S.J. Rushforth, M.B. Edlund, S. A. Spaulding, E. F. Stoermer
Historical abundance and morphology of Didymosphenia species in Naknek Lake, Alaska Historical abundance and morphology of Didymosphenia species in Naknek Lake, Alaska
Since the 1980s, nuisance blooms of Didymosphenia geminata (Lyngbye) M. Schmidt have been documented in sites that are warmer and more mesotrophic than historical records indicate. While the invasion of D. geminata in New Zealand is well documented, it is less clear whether nuisance blooms in North America are a new phenomenon. In order to test the hypothesis that D. geminata blooms have...
Authors
D.P. Pite, K.A. Lane, A.K. Hermann, S. A. Spaulding, B. P. Finney
Potential habitat distribution for the freshwater diatom Didymosphenia geminata in the continental US Potential habitat distribution for the freshwater diatom Didymosphenia geminata in the continental US
The diatom Didymosphenia geminata is a single-celled alga found in lakes, streams, and rivers. Nuisance blooms of D geminata affect the diversity, abundance, and productivity of other aquatic organisms. Because D geminata can be transported by humans on waders and other gear, accurate spatial prediction of habitat suitability is urgently needed for early detection and rapid response, as...
Authors
S. Kumar, S. A. Spaulding, T.J. Stohlgren, K.A. Hermann, T.S. Schmidt, L.L. Bahls
Holocene depositional environments and surface-level changes at Lake Fryxell, Antarctica Holocene depositional environments and surface-level changes at Lake Fryxell, Antarctica
We report on Holocene surface-level variations of Lake Fryxell, Antarctica, as determined from multi-proxy analyses of 18 sediment cores. During this time accumulating sediments were predominantly aeolian sand with algal and carbonate laminae. Based on stratigraphy, mineralogy and diatom assemblages we suggest some carbonate laminae were deposited when lake level dropped, leading to...
Authors
T.E. Whittaker, B.L. Hall, C.H. Hendy, S. A. Spaulding
Inland diatoms from the McMurdo Dry Valleys and James Ross Island, Antarctica Inland diatoms from the McMurdo Dry Valleys and James Ross Island, Antarctica
Diatom taxa present in the inland streams and lakes of the McMurdo Dry Valleys and James Ross Island, Antarctica, are presented in this paper. A total of nine taxa are illustrated, with descriptions of four new species (Luticola austroatlantica sp. nov., Luticola dolia sp. nov., Luticola laeta sp. nov., Muelleria supra sp. nov.). In the perennially ice-covered lakes of the McMurdo Dry...
Authors
R.M.M. Esposito, S. A. Spaulding, Diane M. McKnight, B. Van De Vijver, K. Kopalova, D. Lubinski, B. Hall, T. Whittaker
Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymosphenia geminata Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymosphenia geminata
The diatom Didymosphenia geminata (Lyngbye) Schmidt is emerging as an organism with an extraordinary capacity to impact stream ecosystems on a global scale. In recent years, streams in New Zealand, North America, Europe, and Asia have been colonized by unprecedented masses of “didymo” and its extracellular stalks (fig. 1). This diatom is able to dominate stream surfaces by covering up to...
Authors
S. A. Spaulding, E. Elwell
Antarctic climate cooling and response of diatoms in glacial meltwater streams Antarctic climate cooling and response of diatoms in glacial meltwater streams
To understand biotic responses to an Antarctic cooling trend diatom samples from glacial meltwater streams in the McMurdo Dry Valleys, the largest ice-free area in Antarctica. Diatoms are abundant in these streams, and 24 of 40 species have only been found in the Antarctic. The percentage of these Antarctic diatom species increased with decreasing annual stream flow and increasing...
Authors
R.M.M. Esposito, S.L. Horn, Diane M. McKnight, M.J. Cox, M.C. Grant, S. A. Spaulding, P.T. Doran, K.D. Cozzetto
Scientific issues relating to temperature criteria for salmon, trout, char native to the Pacific Northwest Scientific issues relating to temperature criteria for salmon, trout, char native to the Pacific Northwest
Abstract not available
Authors
G. Poole, J. Dunham, M. Hicks, D. Keenan, J. Lockwood, E. Materna, D. McCullough, C. Mebane, J. Risley, S. Sauter, S. Spaulding, D. Sturdevant
Bathymetric, geophysical and geologic sample data from Medicine Lake, Siskiyou County, northern California Bathymetric, geophysical and geologic sample data from Medicine Lake, Siskiyou County, northern California
In September, 1999, the U.S. Geological Survey acquired high-resolution bathymetry, seismic reflection profiles, and geologic sample data from Medicine Lake, a high altitude (2,036 m) lake located within the summit caldera/basin at Medicine Lake volcano (MLV), a dormant Quaternary shield volcano located in the Cascade Range, 50 km northeast of Mt. Shasta. It last erupted less than 1000...
Authors
Jonathan R. Childs, J. B. Lowenstern, R. L. Phillips, P. E. Hart, J. J. Rytuba, J. A. Barron, S. W. Starratt, Sarah Spaulding
Valve morphology and systematic position of Navicula walkeri (Bacillariophyceae), a diatom endemic to Oregon and California (USA) Valve morphology and systematic position of Navicula walkeri (Bacillariophyceae), a diatom endemic to Oregon and California (USA)
Variation in valve size and ultrastructure is documented for Navicula walkeri, a freshwater diatom species endemic to Oregon and central California (USA). In LM, this large diatom has longitudinal lines on either side of the axial area, as well as lineolate striae. External proximal raphe ends recurve toward the same side as the deflected distal ends. A large central nodule and bulbous...
Authors
J.P. Kociolek, S. A. Spaulding, J.C. Kingston
Diatoms in sediments of perennially ice-covered Lake Hoare, and implications for interpreting lake history in the McMurdo Dry Valleys of Antarctica Diatoms in sediments of perennially ice-covered Lake Hoare, and implications for interpreting lake history in the McMurdo Dry Valleys of Antarctica
Diatom assemblages in surficial sediments, sediment cores, sediment traps, and inflowing streams of perennially ice-covered Lake Hore, South Victorialand, Antarctica were examined to determine the distribution of diatom taxa, and to ascertain if diatom species composition has changed over time. Lake Hoare is a closed-basin lake with an area of 1.8 km2, maximum depth of 34 m, and mean...
Authors
S. A. Spaulding, Diane M. McKnight, E. F. Stoermer, P.T. Doran
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