Biogeoscience

Members of the new Biogeoscience group investigate living systems as fundamental components of the Earth System and possibly other planetary systems through the integrated study of biology, geochemistry, and geology. In DEES, students have the opportunity to work with faculty in aquatic, wetland and terrestrial ecology, biological oceanography, evolutionary biology, microbial genomics, biogeochemistry, paleobiology and astrobiology. DEES Biogeosciences faculty conduct research on biodiversity and ecosystem function, ecological responses to climate change, biogeochemical cycling and storage of nutrients and carbon, plant physiology and biooptics (both aquatic and terrestrial), and the application of isotopic, fossil and organic geochemical tracers to the study of climate and Earth history. Fieldwork and lab experiments employ diverse analytical, observational and modeling tools to build understanding of the Biosphere and its interactions within the Earth System, in the past, present and future.

Ruth Oliver
Personal Information
Ruth
Oliver
Graduate Student
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
Marine Biology
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US

Fax: 

(845) 365-8150

<p>I am interested in understanding the spatial and temporal dynamics of songbird breeding in arctic-boreal North America. My research leverages a variety of remote sensing tools to detect and understand migration in light of global change.</p>

Education
Master of Arts
Columbia University
05/2015
Bachelor of Arts
Claremont McKenna College
05/2013
Natalie T. Boelman
Personal Information
Natalie
T.
Boelman
Lamont Associate Research Professor
Earth and Environmental Sciences
Biology and Paleo Environment
Lecturer
Lamont-Doherty Earth Observatory
Contact Information
6A Marine Biology
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8480

Fax: 

(845) 365-8150

The main goals of my research are to better understand:

  • the ways in which the composition, physical structure, and phenology of Arctic vegetation are changing in response to climate change (Project websites: NASA: Forest-Tundra Ecotone, and, NASA: LiDAR and tundra shrubs)

  •  how these changes impact resident and migratory animals and in turn how animals mediate climate-induced change in the region (Project websites: NSF: TeamBird,  NASA: Animals on the Move, and NSF: TeamVole)

  • how near and remote-sensing techniques can be used to study dynamics in ecological form and function (see above projects)

 

 

Education
Ph.D. in Earth & Environmental Sciences
Columbia University
09/2004
M.A. in Earth & Environmental Sciences
Columbia University
06/2001
Bachelor of Science in Physical Geography
McGill University
1999
Victoria Diaz-Bonilla (former Senior Thesis student, DEES)
Elizabeth Tupper (former Senior Thesis student, Barnard College)
Adam Formica (current Senior Thesis student, DEES)
Lacey-Harris-Coble (current Senior Thesis student, E3B)
Case Prager (current PhD Student, E3B)
Jess Gersony (current Senior Thesis student, E3B)
Rebecca Gibson (current Senior Thesis student, E3B)
Selected Publications:
NDVI as a predictor of canopy arthropod biomass in the Alaskan arctic tundra, Sweet, S.; Asmus, A.; Rich, M.E.; Gough, L.; Wingfield, J.C.; Boelman, N.T. Ecological Applications (2015)
Greater deciduous shrub abundance extends the annual period of maximum tundra greenness and increases modeled net CO2 uptake, Sweet, S.; Griffin, K.L.; Steltzer, H.; Gough, L.; Boelman, N.T. Global Change Biology (2015)
Tall deciduous shrubs offset delayed start of growing season through rapid leaf development in the Alaskan arctic tundra, Sweet, S. K.; Gough, L.; Griffin, K. L.; Boelman, N. T. Arctic, Antarctic and Alpine Research 09/2014, Volume: 46, Issue: 3 p.: 16 (2014) DOI: http://dx.doi.org/10.1657/1938-4246-46.3.682
Greater shrub dominance alters breeding habitat and food resources for migratory songbirds in Alaskan arctic tundra, Boelman, N.T., L.;Gough, J.C.,Wingfield; S., Goetz, A. Asmus; H.E., Chmura; J.S., Krause; J.H., Perez; S.K., Sweet; K.C., Guay Global Change Biology (2014)
Maximum photosynthetic electron transport decreases down slope in a small Arctic watershed, Griffin, K.L.; D.J. Epstein; Boelman, N.T. Arctic, Antarctic and Alpine Research, Volume: 45, Issue: 1 p.: 10 (2013) http://dx.doi.org/10.1657/1938-4246-45.1.39
Arctic arthropod assemblages in habitats of differing shrub dominance, Rich, M.E.; L. Gough; Boelman, N.T. Ecography, Volume: 36 (2013) 10.1111/j.1600-0587.2012.00078.x
Urban heat island effect in New York City promotes growth in Northern red oak seedlings, Searle, S.Y.; M. H. Turnbull; Boelman, N.T.; William S.F. Schuster; Dan Yakir; and K.L. Griffin. Tree Physiology, Volume: 32, Issue: 4 p.: 11 (2012) 10.1093/treephys/tps027
Does NDVI reflect variation in the structural attributes associated with increasing shrub dominance in arctic tundra?, Boelman, N.T., Gough, L., McLaren, J.R., Greaves, H. Environmental Research Letters, Volume: 6 (2011)
Understanding burn severity sensing in Arctic tundra: Exploring vegetation indices, sub-optimal assessment timing and the impact of increasing pixel size, Boelman, N.T., Rocha, A.V. and Shaver, G.R. International Journal of Remote Sensing, Volume: iFirst p.: 1-24 (2011)
Multi-trophic invasion resistance in Hawaii: Bioacoustics, field surveys, and airborne remote sensing, Boelman, N. T.; Asner, G. P.; Hart, P. J.; Martin, R. E. Ecological Applications Dec, Volume: 17, Issue: 8 p.: 2137-2144 (2007)
Inter-annual variability of NDVI in response to long-term warming and fertilization in wet sedge and tussock tundra, Boelman, N. T.; Stieglitz, M.; Griffin, K. L.; Shaver, G. R. Oecologia May, Volume: 143, Issue: 4 p.: 588-597 (2005) DOI 10.1007/s00442-005-0012-9
Photosynthesis and reflectance indices for rainforest species in ecosystems undergoing progression and retrogression along a soil fertility chronosequence in New Zealand, Whitehead, D.; Boelman, N. T.; Turnbull, M. H.; Griffin, K. L.; Tissue, D. T.; Barbour, M. M.; Hunt, J. E.; Richardson, S. J.; Peltzer, D. A. Oecologia Jun, Volume: 144, Issue: 2 p.: 233-244 (2005) DOI 10.1007/s00442-005-0068-6
Response of NDVI, biomass, and ecosystem gas exchange to long-term warming and fertilization in wet sedge tundra, Boelman, N. T.; Stieglitz, M.; Rueth, H. M.; Sommerkorn, M.; Griffin, K. L.; Shaver, G. R.; Gamon, J. A. Oecologia May, Volume: 135, Issue: 3 p.: 414-421 (2003) DOI 10.1007/s00442-003-1198-3
Mukund Rao
Personal Information
Mukund
Rao
Graduate Student
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
Tree Ring Lab
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(917) 834-5543

Fax: 

(845) 365-8150

- Using tree-rings to understand long-term climate and streamflow variability.
- Climate, ecosystem, and societal interactions, focussing on pastoral nomadic herding communities in the Mongolian forest-steppe.
- Statistical methods of reconstructing past climate.

Complete list of publications:
https://scholar.google.com/citations?user=sJ8d66gAAAAJ&hl=en

Education
M.A. Climate and Society
Columbia University, USA
08/2013
B.Tech Chemical Engineering
Amrita School of Engineering, India
07/2012
Selected Publications:
European and Mediterranean hydroclimate responses to tropical volcanic forcing over the last millennium, Rao, M. P.; Cook, B. I.; Cook, E. R.; D'Arrigo, R. D.; Krusic, P. J.; Anchukaitis, K. J.; LeGrande, A. N.; Buckley, B. M.; Davi, N. K.; Leland, C; Griffin, K. L. Geophysical Research Letters (2017) 10.1002/2017GL073057
Karakorum temperature out of phase with hemispheric trends for the past five centuries, Zafar, M. U.; Ahmed, M.; Rao, M. P.; Buckley, B. M.; Khan, N.; Wahab, M.; Palmer, J. Climate Dynamics 06/2015 p.: 1-10 (2015) 10.1007/s00382-015-2685-z
A long-term context (931–2005 CE) for rapid warming over Central Asia, Davi, N. K.; D'Arrigo, R.; Jacoby, G. C.; Cook, E. R.; Anchukaitis, K.; Nachin, B.; Rao, M. P., Leland, C. Quaternary Science Reviews 08/2015, Volume: 121 p.: 89-97 (2015) http://dx.doi.org/10.1016/j.quascirev.2015.05.020
Dzuds, droughts, and livestock mortality in Mongolia, Rao, M. P.; Davi, N. K.; D'Arrigo, R. D.; Skees, J.; Nachin, B.; Leland, C.; Lyon, B.; Wang, S. Y.; Byambasuren, O. Environmental Research Letters 07/2015, Volume: 10, Issue: 7 p.: 074012 (2015) doi:10.1088/1748-9326/10/7/074012
Maureen Raymo
Personal Information
Maureen
Raymo
Bruce C. Heezen/Lamont Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Adjunct Professor
Earth and Environmental Sciences
Director - Core Repository
Lamont-Doherty Earth Observatory
Contact Information
105E Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8801

Fax: 

(845) 365-8150
Selected Publications:
Departures from eustasy in Pliocene sea-level records, Raymo, Maureen E.; Mitrovica, Jerry X.; O'Leary, Michael J.; DeConto, Robert M.; Hearty, Paul L. NATURE GEOSCIENCE MAY, Volume: 4 p.: 328–332 (2011)
Diachronous benthic delta O-18 responses during late Pleistocene terminations, Lisiecki, Lorraine E.; Raymo, Maureen E. PALEOCEANOGRAPHY SEP 23, Volume: 24 p.: PA3210 (2009)
Plio-Pleistocene Ice Volume, Antarctic Climate, and the Global δ18O Record, Raymo, M. E., L. E. Lisiecki, and K. H. Nisancioglu Science, Volume: 313 p.: 492 (2006)
A Pliocene-Pleistocene stack of 57 globally distributed benthic delta O-18 records, Lisiecki, L. E.; Raymo, M. E. PALEOCEANOGRAPHY JAN 18, Volume: 20 p.: PA1003 (2005)
The 41 kyr world: Milankovitch's other unsolved mystery, Raymo, M. E.; Nisancioglu, K. PALEOCEANOGRAPHY MAR 6, Volume: 18 p.: 1011 (2003)
The timing of major climate terminations, Raymo, M. E. PALEOCEANOGRAPHY AUG, Volume: 12 p.: 577–585 (1997)
THE HIMALAYAS, ORGANIC-CARBON BURIAL, AND CLIMATE IN THE MIOCENE, RAYMO, ME PALEOCEANOGRAPHY JUN, Volume: 9 p.: 399–404 (1994)
Tectonic forcing of late Cenozoic climate, Raymo, M.E. and W.F. Ruddiman Nature, Volume: 359 p.: 117-122 (1992)
Evolution of Atlantic Pacific Delta-C-13 Gradients over the Last 2.5 My, Raymo, M. E.; Ruddiman, W. F.; Shackleton, N. J.; Oppo, D. W. Earth and Planetary Science Letters Mar, Volume: 97, Issue: 3-4 p.: 353-368 (1990)
Andrew Juhl
Personal Information
Andrew
Juhl
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Biology and Paleo Environment
Adjunct Associate Professor
Earth and Environmental Sciences
Contact Information
2A Marine Biology
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8837

Fax: 

(845) 365-8150

Fields of interest: 

Plankton ecology, Phytoplankton growth and physiology, Zooplankton grazing, Harmful algae, Dinoflagellate blooms, Physical/biological interactions, Nutrient/microbial pollution of coastal waters, Sea-ice algae

As an aquatic ecologist and oceanographer, my research and teaching focus on how aquatic microorganisms and their predators interact with each other and their physical/chemical environment. I emphasize a holistic perspective encompassing the range of planktonic organisms found in coastal marine systems, estuaries, rivers and lakes, including: planktonic algae, protist microzooplankton, invertebrate zooplankton, and bacteria.    

My research approach links hypothesis-driven, controlled laboratory experiments with small-scale field manipulations and field observations. Such research is inherently interdisciplinary, connecting cell biology and physiology with ecology, and physics and chemistry of the environment. My work finds application in addressing basic and applied questions related to aquatic geochemical fluxes, harmful algal blooms, pollution and water quality, and sea ice ecology

Please see my website for more information.

 

 

 

Education
Ph.D. - Biological Oceanography
Scripps Institution of Oceanography, University of California, San Diego
2000
M. S. - Biological Oceanography
College of Oceanography, Oregon State University
1991
B.S. - Zoology
University of Wisconsin, Madison
1988
Selected Publications:
Overwintering of gelatinous zooplankton in the coastal arctic ocean, Purcell, Jennifer E.; Juhl, Andrew R.; Mańko, Maciej K.; Aumack, Craig F. Marine Ecology Progress Series (2017)
Conserved transcriptional responses to nutrient stress in bloom-forming algae, Harke, Matthew J; Juhl, Andrew R.; Haley, Sheean T.; Alexander, Harriet; Dyhrman, Sonya T. Frontiers in Microbiology (2017)
Transcriptional response of the harmful raphidophyte Heterosigma akashiwo to nitrate and phosphate stress, Haley, Sheean T.; Alexander, Harriet; Juhl, Andrew R.; T. Dyhrman, Sonya T. Harmful Algae (2017)
Jan-Erik Tesdal
Personal Information
Jan-Erik
Tesdal
Graduate Student
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
Jan-Erik_Tesdal.jpg
10 Marine Biology
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8781

Fax: 

(845) 365-8150
Elizabeth Min
Personal Information
Elizabeth
Min
Graduate Student
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
Elizabeth_Min.jpg
6 Marine Biology
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(718) 578-8588

Fax: 

(845) 365-8150
Sam Phelps
Personal Information
Sam
Phelps
Graduate Student
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
104 Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8727

Fax: 

(845) 365-8150
Kyle Frischkorn
Personal Information
Kyle
Frischkorn
Graduate Student
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
102D Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8178

Fax: 

(845) 365-8150

Phycology, cross-kingdom interactions, biogeochemistry, microscopy and, recreationally, the microbiology of fermented foods. 

I am a graduate student in Dr. Sonya Dyhrman's microbial oceanography laboratory; I'm most interested in the molecular underpinnings of how marine microorganisms (and their viruses) interact with each other and their environment, and ultimately biogeochemical implications of these interactions.  

Education
Bachelor of Science
University of Washington
06/2011
SONYA DYHRMAN
Personal Information
Sonya
Dyhrman
Associate Professor
Earth and Environmental Sciences
Biology and Paleo Environment
Contact Information
102E Geoscience
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8165

Fax: 

(845) 365-8163

I am broadly interested in how marine microbes like phytoplankton interact with their geochemical environment, where I use molecular level tools to study the intersection of microbial physiology and biogeochemistry.

Microbial oceanography group members are using a suite of genome-enabled approaches to examine the distribution and activities of marine phytoplankton, and how they influence cycling of carbon, nitrogen and phosphorus. Our work often uses model cultures to understand and bound field observations made on research cruises that span the from polar to tropical systems. This research emphasis provides advanced training for undergraduates, graduate students, and postdoctoral scholars and it is also used as a framework for the development and implementation of inquiry-based educational activities for children.

Education
Ph.D.
Scripps Institution of Oceanography, University of California San Diego
11/1999
B.A.
Dartmouth College
06/1994

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