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Walter Adey

Walter Adey

Emeritus Research Botanist

Phone: 202-633-0923
Fax: 202-357-3037
E-mail Address:

Postal Address
(Mail and Packages):

Department of Botany, MRC-164
Smithsonian Institution
P.O. Box 37012
Washington, DC 20013-7012

Courier Address:
National Museum of Natural History
West Loading Dock
10th and Constitution Ave, NW
Washington, DC 20560-0166

     B.S., MIT; Geophysics
     MIT/Harvard University; Graduate Work,Biology/Paleontology
     PhD, University of Michigan; Botany

Research Interests
     Biosystematics of coralline algae; algal biogeography; coral reef metabolism and its relationship to the algal community; benthic ecosystem dynamics in relation to algae; microcosm and mesocosm techniques; solar/algal methods in aquaculture and municipal/industrial water purification.

Recent Publications - (All Publications)

Adey, Walter H., Hernandez-Kantun, Jazmin, Gabrielson, Paul W., Nash, Merinda C. and Hayek, Lee-Ann C. 2018. Phymatolithon (Melobesioideae, Hapalidiales) in the Boreal-Subarctic Transition Zone of the North Atlantic. Smithsonian Contributions to Marine Sciences, 41: 2-90. doi:10.5479/si.1943-667X.41

Calahan, Dean, Osenbaugh, Edward and Adey, Walter H. 2018. Expanded algal cultivation can reverse key planetary boundary transgressions. Heliyon, 4(2) doi:10.1016/j.heliyon.2018.e00538

Hetzinger, S., Halfar, J., Kronz, A., Simon, K., Adey, Walter H. and Steneck, R. S. 2018. Reproducibility of Clathromorphum compactum coralline algal Mg/Ca ratios and comparison to high-resolution sea surface temperature data. Geochimica et Cosmochimica Acta, 220: 96-109. doi:10.1016/j.gca.2017.09.044

Hou, A., Halfar, J., Adey, Walter H., Wortmann, U. G., Zajacz, Z., Tsay, A., Williams, B. and Chan, P. 2018. Long-lived coralline alga records multidecadal variability in Labrador Sea carbon isotopes. Chemical Geology, doi:10.1016/j.chemgeo.2018.02.026

Light, Tricia, Williams, Branwen, Halfar, Jochen, Hou, Alicia, Zajacz, Zoltan, Tsay, Alexandra and Adey, Walter 2018. Advancing Mg/Ca Analysis of Coralline Algae as a Climate Proxy by Assessing LA-ICP-OES Sampling and Coupled Mg/Ca-? 18 O Analysis. Geochemistry, Geophysics, Geosystems, 19: 1-19. doi:10.1029/2018GC007504

Light, Tricia, Williams, Branwen, Halfar, Jochen, Hou, Alicia, Zajacz, Zoltan, Tsay, Alexandra and Adey, Walter 2018. Advancing Mg/Ca Analysis of Coralline Algae as a Climate Proxy by Assessing LA-ICP-OES Sampling and Coupled Mg/Ca-delta O-18 Analysis. Geochemistry Geophysics Geosystems, 19(9): 2876-2894. doi:10.1029/2018GC007504

Nash, Merinda C. and Adey, Walter H. 2018. Anatomical structure overrides temperature controls on magnesium uptake -- calcification in the Arctic/subarctic coralline algae Leptophytum laeve and Kvaleya epilaeve (Rhodophyta; Corallinales). Biogeosciences, 15: 781-795. doi:10.5194/bg-2017-180

Pena, Viviana, Hernandez-Kantun, Jazmin J., Adey, Walter H. and Le Gall, Line 2018. Assessment of coralline species diversity in the European coasts supported by sequencing of type material: the case study of Lithophyllum nitorum (Corallinales, Rhodophyta). Cryptogamie Algologie, 39(1): 123-137. doi:10.7872/crya/v39.iss1.2018.123

Williams, Siobhan, Adey, Walter, Halfar, Jochen, Kronz, Andreas, Gagnon, Patrick, Belanger, David and Nash, Merinda 2018. Effects of light and temperature on Mg uptake, growth, and calcification in the proxy climate archive Clathromorphum compactum. Biogeosciences, 15(19): 5745-5759. doi:10.5194/bg-15-5745-2018

Chan, P., Halfar, J., Adey, Walter H., Hetzinger, S., Zack, T., Moore, G. W. K., Wortmann, U. G., Williams, B. and Hou, A. 2017. Multicentennial record of Labrador Sea primary productivity and sea-ice variability archived in coralline algal barium. Nature Communications, 8 doi:10.1038/ncomms15543

Chan, P., Halfar, J., Norley, C. J. D., Pollmann, S. I., Adey, Walter H. and Holdsworth, D. W. 2017. Micro-computed tomography: Applications for high-resolution skeletal density determinations: An example using annually banded crustose coralline algae. Geochemistry, Geophysics, Geosystems, 18(9): 3542-3553. doi:10.1002/2017GC006966

Kangas, Patrick, Mulbry, Walter, Klavon, Philip, Laughinghouse, H. D. and Adey, Walter H. 2017. High diversity within the periphyton community of an algal turf scrubber on the Susquehanna River. Ecological Engineering, 108(Pt. B): 564-572. doi:10.1016/j.ecoleng.2017.05.010

Moore, G. W. K., Halfar, J., Majeed, H., Adey, Walter H. and Kronz, A. 2017. Amplification of the Atlantic Multidecadal Oscillation associated with the onset of the industrial-era warming. Scientific Reports, 7 doi:10.1038/srep40861

Nash, Merinda C. and Adey, Walter H. 2017. Multiple phases of mg-calcite in crustose coralline algae suggest caution for temperature proxy and ocean acidification assessment: lessons from the ultrastructure and biomineralization in Phymatolithon (Rhodophyta, Corallinales)1. Journal of Phycology, 53(5): 970-984. doi:10.1111/jpy.12559

Blersch, D. M., Kangas, P. C. and Adey, Walter H. 2016. Freshwater Marsh Community Structure in a Florida Everglades Mesocosm. Transactions of the ASABE, 59(5): 1305-1312. doi:10.13031/trans.59.11599

Hernández-Kantún, Jazmin J., Gabrielson, Paul, Hughey, Jeffery R., Pezzolesi, Laura, Rindi, Fabio, Robinson, Nestor M., Peña, Viviana, Riosmena-Rodriguez, Rafael, Le Gall, Line and Adey, Walter H. 2016. Reassessment of branched Lithophyllum spp. (Corallinales, Rhodophyta) in the Caribbean Sea with global implications. Phycologia, 55(6): 619-639. doi:10.2216/16-7.1

Hernández-Kantún, Jazmin J., Hall-Spencer, J., Grall, J., Adey, Walter H., Rindi, F., Maggs, I. B. and Pena, V. 2016. North Atlantic Rhodolith Beds. In: Riosmena-Rodriguez, Rafael, Nelson, W. and Aguirre, J., Rhodolith/maerl beds: a global perspective. New York: Springer Berlin Heidelberg,() pp.

Jesionek, Michel B., Bahia, Ricardo G., Hernandez-Kanttun, Jazmin J., Adey, Walter H., Yoneshigue-Valentin, Yocie, Longo, Leila L. and Amado-Filho, Gilberto M. 2016. A taxonomic account of non-geniculate coralline algae (Corallinophycidae, Rhodophyta) from shallow reefs of the Abrolhos Bank, Brazil. Algae, 31(4): 317-340. doi:10.4490/algae.2016.31.11.16

Adey, Walter H., Halfar, Jochen, Humphreys, Alexander, Suskiewicz, Thew, Belanger, David, Gagnon, Patrick and Fox, Michael 2015. Subarctic Rhodolith Beds Promote Longevity of Crustose Coralline Algal Buildups and Their Climate Archiving Potential. Palaios, 30(4): 281-293. doi:10.2110/palo.2014.075

Adey, Walter H., Hernández-Kantún, Jazmin J., Johnson, Gabriel and Gabrielson, Paul W. 2015. DNA sequencing, anatomy, and calcification patterns support a monophyletic, subarctic, carbonate reef-forming Clathromorphum (Hapalidiaceae, Corallinales, Rhodophyta). Journal of Phycology, 51(1): 189-203. doi:10.1111/jpy.12266

Bahia, Ricardo G., Amado-Filho, Gilberto, Maneveldt, Gavin W., Adey, Walter H., Johnson, Gabriel, Jesionek, Michel B. and Longo, Leila L. 2015. Sporolithon yoneshigueae sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta), a new rhodolith-forming coralline alga from the southwest Atlantic. Phytotaxa, 224(2): 140-158. doi:10.11646/phytotaxa.224.2.2

Bougeois, Laurie, Williams, Branwen, Halfar, Jochen, Konar, Brenda, Adey, Walter H., Kronz, Andreas and Wortmann, Ulrich G. 2015. Does the Coralline Alga Leptophytum foecundum (Kjellman) Capture Paleoenvironmental Variability in the Arctic Ocean?. Arctic, Antarctic, and Alpine Research, 47(2): 375-387. doi:10.1657/AAAR0014-061

Calahan, Dean, Blersch, David and Adey, Walter H. 2015. Weeds in the algae garden - A source of biomass for the algae-to-biofuels program. Ecological Engineering, 85: 275-282. doi:10.1016/j.ecoleng.2015.10.014

Hernández-Kantún, Jazmin J., Rindi, Fabio, Adey, Walter H., Heesch, Svenja, Peña, Viviana, Le Gall, Line and Gabrielson, Paul W. 2015. Sequencing type material resolves the identity and distribution of the generitype Lithophyllum incrustans, and related European species L. hibernicum and L. bathyporum (Corallinales, Rhodophyta). Journal of Phycology: An International Journal of Algal Research, 51(4): 791-807. doi:10.1111/jpy.12319

Laughinghouse, Haywood Dail, Müller, Kirsten M., Adey, Walter H., Lara, Yannick, Young, Robert and Johnson, Gabriel P. 2015. Evolution of the Northern Rockweed, Fucus distichus, in a Regime of Glacial Cycling: Implications for Benthic Algal Phylogenetics. PloS One, 10(12): 1-17. doi:10.1371/journal.pone.0143795

Peña, Viviana, Pardo, Cristina, López, Lúa, Carro, Belén, Hernández-Kantún, Jazmin J., Adey, Walter H., Bárbara, Ignacio, Barreiro, Rodolfo and Gall, Line Le 2015. Phymatolithon lusitanicum sp. nov. (Hapalidiales, Rhodophyta): The Third Most Abundant Maerl-Forming Species in the Atlantic Iberian Peninsula. Cryptogamie, Algologie, 36(4): 429-459. doi:10.7872/crya/v36.iss4.2015.429

Bahia, Ricardo G., Amado-Filho, Gilberto, Maneveldt, Gavin W., Adey, Walter H., Johnson, Gabriel, Marins, Bianca V. and Longo, Leila L. 2014. Sporolithon tenue sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta): A new rhodolith-forming species from the tropical southwestern Atlantic. Phycological Research, 62(1): 44-54. doi:10.1111/pre.12033

Sandefur, Heather N., Johnston, Ryan Z., Matlock, Marty D., Costello, Thomas A., Adey, Walter H. and Laughinghouse IV, Haywood D. 2014. Hydrodynamic regime considerations for the cultivation of periphytic biofilms in two tertiary wastewater treatment systems. Ecological Engineering, 71: 527-532. doi:10.1016/j.ecoleng.2014.07.070

Sherman, Clark E., Fletcher, Charles H., Rubin, Ken H., Simmons, Kathleen R. and Adey, Walter H. 2014. Sea-level and reef accretion history of Marine Oxygen Isotope Stage 7 and late Stage 5 based on age and facies of submerged late Pleistocene reefs, Oahu, Hawaii. Quaternary Research, 81(1): 138-150. doi:10.1016/j.yqres.2013.11.001

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