Publications / CV

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Princiotta, S.D., A. VanKuren, C.E. Williamson, R.W. Sanders, M.S. Valiñas. 2023. Disentangling the role of light and nutrient limitation on bacterivory by mixotrophic nanoflagellates. Journal of Phycology 00:1-6, online June 2023. [doi:0.1111/jpy.13358]

Millette, N.C., R.J. Gast, J.Y. Luo, H.V. Moeller, K. Stamieszkin, K.H. Andersen, E.F. Brownlee, N. Cohen, S. Duhamel, S. Dutkiewicz, P.M. Glibert, M.D. Johnson, S.G. Leles, A.E. Maloney, G. McManus, N. Poulton, S.D. Princiotta, R.W. Sanders and S. Wilken. 2023. Mixoplankton and mixotrophy: Future research priorities. Journal of Plankton Research. fbad020. [doi:10.1093/plankt/fbad020]

Princiotta, S.D., Nguyen, T.* and R.W. Sanders. 2023. High abundances and negligible grazing during winter by the mixotrophic chrysophyte Dinobryon. Fottea 23:201-207.  [doi: 10.5507/fot.2022.020] *undergraduate researcher

Grattepanche, J.-D., W.J. Jeffrey, R.J. Gast, R.W. Sanders. 2022. Diversity of microbial eukaryotes along the West Antarctic peninsula in austral spring. Frontiers in Microbiology 13:844856 [doi:10.3389/fmicb.2022.844856]

Hamsher, S.E., K. Ellis*, D. Holen and R.W. Sanders. 2020. Effects of light, dissolved nutrients and prey on ingestion and growth of a newly identified mixotrophic alga, Chrysolepidomonas dendrolepidota (Chrysophyceae). Hydrobiologia 847:2923-2932 [doi:10.1007/s10750-020-04293-z] *undergraduate researcher

Leles, S.G., A. Mitra, K.J. Flynn, U. Tillmann, D. Stoecker, H.J. Jeong, J. Burkholder, P.J. Hansen, D.A. Caron, P.M. Glibert, G. Hallegraeff, J. Raven, R.W. Sanders, M. Zubkov. 2019. Sampling bias misrepresents the biogeographic significance of constitutive mixotrophs across global oceans. Global Ecology and Biogeography. [doi: 10.1111/geb.12853 ]

McKie-Krisberg, Z.M.*, R.W. Sanders and R.J. Gast. 2018. Evaluation of mixotrophy-associated gene expression in two species of polar marine algae. Frontiers in Marine Science 5:273. [doi: 10.3389/fmars.2018.00273] *former Sanders Lab member

Gast, R.J., S.A. Fay and R.W. Sanders. 2018. Mixotrophic activity and diversity of Antarctic marine protists in in austral summer. Frontiers in Marine Science 5:13. [doi: 10.3389/fmars.2018.00013]

Hamsher, S.E., C.Y.T Sung* and R.W. Sanders. 2018. Effects of temperature and photorepair radiation on a marine ciliate exposed to UV-B radiation. J. Eukaryotic Microbiology [doi: 10.1111/jeu.12491] *former Sanders Lab member

Leles, S.G., A. Mitra, K.J. Flynn, D.K. Stoecker, P.J. Hansen, A. Calbet, G B. McManus, R.W. Sanders, D.A. Caron, F. Not, G. M. Hallegraeff, P. Pitta, J.A. Raven, M.D. Johnson, P.M. Glibert, S. Våge. 2017. Oceanic protists with different forms of acquired phototrophy display diverse biogeographies and abundance. 2017. Proceedings of the Royal Society B 284: 20170664. [doi: 10.1098/rspb.2017.0664].

Moorthi, S.D., R. Ptacnik, R.W. Sanders, M. Busch, R. Fischer, H. Hillebrand. 2017. The functional role of planktonic mixotrophs in altering seston stoichiometry. Aquatic Microbial Ecology 79: 235-245. [doi: 10.3354/ame01832]

Princiotta, S.D. and R.W. Sanders. 2017. Heterotrophic and mixotrophic nanoflagellates in a mesotrophic lake: abundance and grazing impacts across season and depth. Limnology & Oceanography 62: 632-644. [doi: 10.1002/lno.10450/full]

Princiotta, S.DeVaul, B. Smith* and R.W. Sanders. 2016. Temperature-dependent phagotrophy and phototrophy in a mixotrophic chrysophyte. Journal of Phycology 52: 432-440. [doi: 10.1111/jpy.12405].        *undergraduate researcher.

Mitra A., K.J. Flynn, U. Tillmann, J.A. Raven, D. Caron, D.K. Stoecker, F. Not, P.J. Hansen, G. Hallegraeff, R. Sanders, S. Wilken, G. McManus, M. Johnson, P. Pitta, S. Våge, T. Berge, A. Calbet, F. Thingstad, H.J. Jeong, J. Burkholder, P.M. Glibert, E. Granéli, V. Lundgren. 2016. Defining planktonic protist functional groups on mechanisms for energy and nutrient acquisition: incorporation of diverse mixotrophic strategies. Protist 167:106-120.

Graham, E.R. and R.W. Sanders. 2016. Species-specific photosynthetic responses of symbiotic zoanthids to thermal stress and ocean acidification. Marine Ecology 37: 442-458. DOI: 10.1111/maec.12291 [online link]

Sanders, R.W., S.L. Cooke, J.M. Fischer, S.B. Fey, A.W. Heinze*, W.H. Jeffrey, A.L. Macaluso*, R.E. Moeller, D.P. Morris, P.J. Neale, M. Olson, J.D. Pakulski, J.A. Porter, D.M. Schoener*, C.E. Williamson. 2015 . Shifts in microbial food web structure and productivity after additions of naturally occurring dissolved organic matter: results from large-scale lacustrine mesocosms. Limnology & Oceanography 60: 2130-2144. DOI: 10.1002/lno.10159. *Sanders Lab member

Graham, E.R., A. Parekh*, R.K. Devassy*, and R.W. Sanders. 2015. Carbonic anhydrase activity changes in response to increased temperature and pCO2 in Symbiodinium-zoanthid associations. Journal of Experimental Marine Biology and Ecology 473:218-226.  DOI: 10.1016/j.jembe.2015.08.017                      *undergraduate researcher

Cooke, S.L., J.M. Fischer, K. Kessler, Craig E. Williamson, R.W. Sanders, D.P. Morris, J.A. Porter, W.H. Jeffrey, S.B.DeVaul*, J.D. Pakulski. 2015. Direct and indirect effects of chromophoric dissolved organic matter additions on zooplankton during large-scale mesocosm experiments in an oligotrophic lake. Freshwater Biology 60:2362-2378.  DOI: 10.1111/fwb.12663.    *Sanders Lab member

McKie-Krisberg, Z.M., R.J. Gast and R.W. Sanders. 2015. Physiological responses of three species of Antarctic mixotrophic phytoflagellates to changes in light and dissolved nutrients. Microbial Ecology 70:21-29.  [doi:10.1007/s00248-014-0543-x]

Sellers, C.G., R.J. Gast and R.W. Sanders. 2014. Selective feeding and foreign plastid retention in an Antarctic dinoflagellate. Journal of Phycology 50:1081-1088. [online link] [doi:10.1111/jpy.12240]

Graham, E.R., Z.M. McKie-Krisberg and R.W. Sanders. 2014. Photosynthetic carbon from algal symbionts supplements Ambystoma maculatum embryos during the later stages of embryonic development. BMC Research Notes 7:764.[online link] [doi:10.1186/1756-0500-7-764]

McKie-Krisberg, Z.M. and R.W. Sanders. 2014. Phagotrophy by the picoeukaryotic green alga Micromonas: implications for Arctic Oceans. ISME Journal 8:1953-1961. [online link] [doi:10.1038/ismej.2014.16]

Gast, R.J., Z.M. McKie-Krisberg, S.A. Fay, J.R. Rose, and R.W. Sanders. 2014. Antarctic mixotrophic protist abundances by microscopy and molecular methods. FEMS Microbiology Ecology 89:388-401 [online link] [doi: 10.1111/1574-6941.12334]

Gilroy, K.D., S. Neretina and R.W. Sanders. 2014. Behavior of gold nanoparticles in an experimental algal-zooplankton food chain. Journal of Nanoparticle Research 16:2414. [online link] [doi: 10.1007/s11051-014-2414-2]

Fay, S.A., R.J. Gast, and R.W. Sanders. 2013. Linking bacterivory and phyletic diversity of protists with a marker gene survey and experimental feeding with BrdU-labeled bacteria. Aquatic Microbial Ecology 71:141-153. doi: 10.3354/ame01674 [online link].

Heinze, A.W., C.L. Truesdale*, S.B. DeVaul, J. Swinden* and R.W. Sanders. 2013. The role of temperature in growth, feeding and the vertical distribution of the mixotrophic chrysophyte Dinobryon. Aquatic Microbial Ecology. doi: 10.3354/ame01673              [online link]. *undergraduate researcher.

Tsai, A.Y., G.C. Gong, R.W. Sanders and J.K. Huang. 2013. Contribution of viral lysis and nanoflagellate grazing to bacterial mortality in the inner and outer regions of the Changjiang River plume during summer. Journal of Plankton Research 35:1283-1293. doi: 10.1093/plankt/fbt074. [online link]

Tsai, A.Y., G.C. Gong, R.W. Sanders, and K.P. Chiang. 2103. Relationship of Synechococcus abundance to the range of seasonal ocean temperature. Terrestrial, Atmospheric & Oceanic Sciences 24:925-932. doi: 10.3319/TAO.2013.06.17.01(Oc)

Ismail, N.S., D.J. Velinsky, J.T.F. Ashley & R.W. Sanders. 2013. Chorioallantoic membrane as a non-lethal sampling method for polychlorinated biphenyls analysis in the northern diamondback terrapin (Malaclemys terrapin terrapin). Chemistry and Ecology 29:391-403. doi:10.1080/02757540.2013.779680.  [online link]

Graham, E.R., S.A. Fay and R.W. Sanders. 2013. Intracapsular algae provide fixed carbon to developing embryos of the salamander Ambystoma maculatum. Journal of Experimental Biology 216:452-459. [doi:10.1242/jeb.076711] [abstract]

Sanders, R.W. and R.J. Gast. 2012. Bacterivory by phototrophic picoplankton and nanoplankton in Arctic waters. FEMS Microbiology Ecology 82:242-253. [10.1111/j.1574-6941.2011.01253.x]. [abstract]

Tsai, A.Y., G.C. Gong, R.W. Sanders, K.P. Chiang, J.K. Huang, and Y.F. Chan. 2012. Viral lysis and nanoflagellate grazing as factors controlling diel variations of Synechococcus spp. summer abundance in coastal waters of Taiwan. Aquatic Microbial Ecology 66:159-167. [doi:10.3354/ame01566] [full article]

Tsai, A.Y., G.C. Gong, R.W. Sanders, K.P. Chiang, and C.F. Choa. 2012. Heterotrophic bacterial and Synechococcus spp. growth and mortality along the inshore-offshore in the East China Sea in summer. J. Oceanography 68:151-162.  [DOI:10.1007/s10872-011-0076-6] [abstract]

Sanders, R.W. 2011. Alternative nutritional strategies in protists: symposium introduction and a review of freshwater protists that combine photosynthesis and heterotrophy. Journal of Eukaryotic Microbiology 58:181-184. [abstract]

Tsai, A.Y., G.C. Gong, R.W. Sanders, W.H. Chen, C.F. Chao, and K.P. Chiang. 2011. Relative importance of pigmented- and heterotrophic nanoflagellates grazing on bacteria during the warm season in a coastal subtropical ecosystem of the Western Pacific. Aquatic Microbial Ecology 63:9-18. [full article]

Tsai, A.Y., Sanders, R.W., Chao, C., Chiang, K., and Gong, G. 2010. Microbial dynamics in an oligotrophic bay of the western subtropical Pacific: impact of short-term heavy freshwater runoff and upwelling. Journal of Oceanography 66:873-883. [abstract]

Tsai, A.Y., G.W. Gong, R.W. Sanders, C.J. Wang, and K.P. Chiang. 2010. The impact of the Changjiang River plume extension on the nanoflagellate community in the East China Sea. Estuarine Coastal and Shelf Science 89: 21-30. [abstract]

Taylor, W.T. & R.W. Sanders. 2010. Chap. 3. Protozoa. In: Ecology and Classification of North American Freshwater Invertebrates, 3rd ed., J. Thorp & A. Covich (eds.) Academic.

Gast, R.J., R.W. Sanders and D.A. Caron. 2009. Ecological strategies of protists and their symbiotic relationships with prokaryotic microbes. Trends in Microbiology 17:563-569. [abstract]

Heinze, A.W. and R.W. Sanders. 2009. A novel temperature gradient incubator to study the effects of temperature on motile aquatic organisms.  Limnology and Oceanography: Methods 7:216-221. [abstract]

Macaluso, A.L., D.L. Mitchell, and R.W. Sanders. 2009. The direct effects of UV-B radiation on the heterotrophic nanoflagellate Paraphysomonas. Applied and Environmental Microbiology 75:4525-4530. [full article]

Moorthi S.D., D.A. Caron, R. Gast, and R.W. Sanders. 2009. Mixotrophy: a widespread and important ecological strategy for planktonic and sea-ice nanoflagellates in the Ross Sea, Antarctica. Aquatic Microbial Ecology 54:269-277. [full article]

Sanders, R.W. (2009).  Protists. Encyclopedia of Inland Waters, volume 3, pages 252-260.  Gene E. Likens (ed). Oxford: Elsevier  []

Sanders, R.W., A.L. Macaluso, T.J. Sardina, and D.L. Mitchell. 2005. Photoreactivation in two freshwater ciliates: differential responses to variations in UV-B flux and temperature.  Aquatic Microbial Ecology 40:283-292.  [full article]

Seitzinger, S.P., R.W. Sanders, and R. Styles. 2002. Bioavailability of DON from natural and anthropogenic sources to estuarine plankton. Limnology and Oceanography 47(2):353-366.  [full article]

Sanders, R.W., D.A. Caron, J.M. Davidson, M.R. Dennett, and D. Moran. 2001. Nutrient acquisition and population growth of a mixotrophic alga in axenic and bacterized cultures.  Microbial Ecology 42:513-523. [full article]

Taylor, W.T. and R.W. Sanders. 2001. Chapter 3. Protozoa. In: Ecology and Classification of North American Freshwater Invertebrates, 2nd edition, pp. 43-96, J. Thorp & A. Covich (eds.) Academic Press.

Sanders, R.W., U.G. Berninger, E.L. Lim, P.F. Kemp and D.A. Caron. 2000. Heterotrophic and mixotrophic nanoplankton predation on picoplankton in the Sargasso Sea and on Georges Bank. Marine Ecology Progress Series 192:103-118. [full article]

Caron, D.A., E.L. Lim, R.W. Sanders, M.R. Dennett and U.-G. Berninger. 2000. Responses of bacterioplankton and phytoplankton to organic carbon and inorganic nutrient additions in contrasting oceanic ecosystems. Aquatic Microbial Ecology 22:175-184.  [full article]

Sanders, R.W. 1999. Book Review of “Free-Living Freshwater Protozoa: A Colour Guide” by D.J. Patterson. Limnol. Oceanogr. 44:399-400.

Seitzinger, S.P. and R.W. Sanders. 1999. Atmospheric inputs of dissolved organic nitrogen stimulate estuarine bacteria and phytoplankton. Limnol. Oceanogr. 44:721-730. [full article]

Seitzinger, S.P. and R.W. Sanders. 1997. Estuarine eutrophication: the contribution of dissolved organic nitrogen. Mar. Ecol. Prog. Ser. 159: 1-12.  [full article]

Sanders, R.W., C.E. Williamson, P.L. Stutzman, R.E. Moeller, C.E. Goulden and R.B. Aoki. 1996. Reproductive success of “herbivorous” zooplankton fed algal and non-algal food resources. Limnol. Oceanogr. 41: 1295-1311.   [full article]

Williamson, C.E., R.W. Sanders, R.E. Moeller, and P.L. Stutzman. 1996. Utilization of subsurface food resources for zooplankton reproduction: implications for vertical migration theory. Limnol. Oceanogr. 41: 224-233.  [full article]

Sanders, R.W. 1995. Seasonal distributions of the photosynthesizing ciliates Laboea strobila and Mesodinium rubrum in an estuary of the Gulf of Maine. Aquat. Microbial Ecol. 9: 237-242. [full article]

Sanders, R.W. and C.C. Gilmour. 1994. Accumulation of selenium in a model freshwater microbial food web. Appl. Environ. Microbiol. 60: 2677-2683. [full article]

Sanders, R.W., D.A. Leeper, C.H. King, and K.G. Porter. 1994. Food web structure and zooplankton grazing impacts on photosynthetic and heterotrophic nanoplankton. Hydrobiologia 288: 167-181. [full article]

Karentz, D., M.L. Bothwell, R.B. Coffin, A. Hanson, G.J. Herndl, S.S. Kilham, M.P. Lesser, M. Lindell, R.E. Moeller, D.P. Morris, P.J. Neale, R.W. Sanders, C.S. Weiler, and R.G. Wetzel. 1994. Impact of UV-B radiation on pelagic freshwater ecosystems: Report of working group on bacteria and phytoplankton. Arch. Hydrobiol. Beih. Ergebn. Limnol. 43: 31-69.

Sanders, R.W. and S.A. Wickham. 1993. Planktonic protists and metazoa: predation, food quality and population control. Marine Microbial Food Webs 7: 197-223. [full article]

Caron, D.A., R.W. Sanders, E.L. Lim, C. Marrasé, L.A. Amaral, S. Whitney, R. Aoki, and K.G. Porter. 1993. Light-dependent phagotrophy in the freshwater mixotrophic chrysophyte Dinobryon cylindricum. Microbial Ecology 25: 93-111. [full article]

Sanders, R.W., D.A. Caron, and U.-G. Berninger. 1992. Relationships between bacteria and heterotrophic nanoplankton in marine and fresh waters: an inter-ecosystem comparison. Marine Ecology Progress Series 86: 1-14. [full article]

Berninger, U.-G., D.A. Caron, and R.W. Sanders. 1992. Mixotrophic algae in three ice-covered lakes of the Pocono Mountains, USA. Freshwater Biol. 28: 263-272. [abstract]

Sanders, R.W. 1991. Mixotrophic protists in marine and freshwater ecosystems. J. Protozoology 38: 76-81. [abstract]

Sanders, R.W. 1991. Trophic strategies among heterotrophic flagellates. In: The Biology of Heterotrophic Flagellates, Systematics Association Special Volume No. 45, pp. 21-38, D.J. Patterson and J. Larsen (eds.). Oxford University Press.

Berninger, U.-G., D.A. Caron, R.W. Sanders, and B. Finlay. 1991. Flagellates of planktonic communities. In: The Biology of Heterotrophic Flagellates, Systematics Assoc. Spec. Vol. No. 45, pp. 39-56.

Taylor, W.T. and R.W. Sanders. Protozoa. 1991. In: Ecology and Classification of North American Freshwater Invertebrates, pp. 37-93, J. Thorp and A. Covich (eds.). Academic Press.

King, C.H., R.W. Sanders, E.B. Shotts, Jr., and K.G. Porter. 1991. Differential survival of bacteria ingested by zooplankton in an eutrophic lake. Limnol. Oceanogr. 36: 829-845.   [full article]

Sanders, R.W. and K.G. Porter. 1990. Bacterivorous flagellates as food resources for the freshwater crustacean zooplankter Daphnia ambigua. Limnol. Oceanogr. 35: 188-191.   [full article]

Sanders, R.W., K.G. Porter, and D.A. Caron. 1990. Relationship between phototrophy and phagotrophy in the mixotrophic chrysophyte Poterioochromonas malhamensis. Microbial Ecology 19: 97-109. [full article]

Bennett, S.J., R.W. Sanders, and K.G. Porter. 1990. Heterotrophic, autotrophic, and mixotrophic nanoflagellates: Seasonal abundances and bacterivory in a eutrophic lake. Limnol. Oceanogr. 35: 1821-1832.  [full article]

Caron, D.A., K.G. Porter, and R.W. Sanders. 1990. Carbon, nitrogen, and phosphorus budgets for the mixotrophic phytoflagellate Poterioochromonas malhamensis (Chrysophyceae) during bacterial ingestion. Limnol. Oceanography 35: 433-443.   [full article]

DeBiase, A.E., R.W. Sanders, and K.G. Porter. 1990. Relative nutritional value of ciliated protozoa and algae as food for Daphnia. Microbial Ecology 19: 199-210. [full article]

Sanders, R.W., K.G. Porter, S.J. Bennett, and A.E. DeBiase. 1989. Seasonal patterns of bacterivory by flagellates, ciliates, rotifers, and cladocerans in a freshwater planktonic community. Limnol. Oceanogr. 34: 673-687.  INCLUDES MIXOTROPHS  [full article]

Sanders, R.W. 1988. Feeding by Cyclidium sp. (Ciliophora, Scuticociliatida) on particles of different sizes and surface properties. Bulletin of Marine Science 43: 446-457. [link to full article]

Sanders, R.W. and K.G. Porter. 1988. Phagotrophic phytoflagellates. In: K.C. Marshall, (Ed.) Advances in Microbial Ecology 10: 167-192.

Bennett, S.J., R.W. Sanders, and K.G. Porter. 1988. Chemosensory responses of heterotrophic and mixotrophic flagellates to potential food sources. Bulletin of Marine Science 43: 764-771. [link to full article]

Sanders, R.W. 1987. Tintinnids and other microzooplankton – seasonal distributions and relationships to resources and hydrography in a Maine estuary. Journal of Plankton Research 9: 65-77. [full article]

Gerritsen, J., R.W. Sanders, S.W. Bradley, & K.G. Porter. 1987. Individual feeding variability of protozoan and crustacean zooplankton analyzed with flow cytometry. Limnol. Oceanogr. 32: 691-699.   [full article]

Sanders, R.W. and K.G. Porter. 1986. Use of metabolic inhibitors to estimate protozooplankton grazing and bacterial production in a monomictic eutrophic lake with an anaerobic hypolimnion. Appl. Environ. Microbiol. 52: 101-107. [full article]

McDonough, R.J., R.W. Sanders, K.G. Porter, and D.L. Kirchman. 1986. Depth distribution of bacterial production in a stratified lake with an anoxic hypolimnion. Appl. Environ. Microbiol. 52: 992-1000.  [full article]

Porter, K.G., E.B. Sherr, B.F. Sherr, M.L. Pace, and R.W. Sanders. 1985. Protozoa in planktonic food webs. Journal of Protozoology 32: 409-415. [full article]