natural sciences faculty

Nicholas A. Baer

Professor and Chair, Natural Sciences
(603) 526-3066 |

Joined the faculty in 2004. Received B.A. from University of Vermont and Ph.D. from University of Maryland. Teaching interests include freshwater biology, conservation biology, ecology, water resources, and environmental studies. Research interests are in freshwater foodweb dynamics, aquatic macroinvertebrates, water quality, ecosystem structure and function, particularly relating how aquatic organisms respond to changes in water parameters such as pH, conductivity, and nitrogen, phosphorus, dissolved organic carbon concentrations.

Christine Bieszczad

Associate Professor, Natural Sciences
(603) 526-3061 |

Joined the faculty in 2008. Received Ph.D. in Pharmacology and Toxicology from Dartmouth Medical School in 1999. Areas of expertise include anatomy, physiology, microbiology, pharmacology, toxicology and cancer biology.

James Jukosky

Assistant Professor, Natural Sciences
(603) 526-3379 |

Joined faculty in 2010. B.S. in Zoology from University of New Hampshire and a Ph.D. in Molecular, Cellular, and Systems Physiology from Dartmouth College. Professor Jukosky's has way too many research interests, they include: the effects of pollutants on reproduction in wildlife, how chronic exposure to arsenic in drinking water impairs the immune system, using recombineering to engineer knockout mouse models, the effects of cigarette smoke exposure on antimicrobials peptides produces in the upper airways, and Canada Warbler genetics.

Linas Kalvaitis

Assistant Professor, Natural Sciences
(603) 526-3680 |

Joined faculty in 2008. M.S. in anthropology from the University of New Mexico.

Benjamin B. Steele

Professor, Natural Sciences
(603) 526-3677 |

Joined the faculty in 1988. Received B.S. from Harvard, M.S. from Utah State and Ph.D. from Dartmouth Collge. Teaching interests include ecology, evolution, animal behavior and environmental studies. Research interests are in bird behavior and population studies, particularly related to migrating birds and sea ducks. Professor Steele is also a director of the New England Institute for Landscape Ecology, which sponsors research projects in New England and Alaska.

Joshua Steffen

Assistant Professor, Natural Sciences
(603) 526-3679 |

Joshua Steffen comes to Colby-Sawyer from the University of Utah, where he earned his Ph.D. in Biology and was an adjunct professor. Professor Steffen has also taught courses at Salt Lake Community College and Westminster College, both in Utah. Since 2006 he has mentored undergraduate research projects focused on various aspects of Arabidopsis. His post-doctoral research has used novel sequencing methods to investigate the genomic changes that underlie evolution of gene expression in plants.

William A. Thomas

Professor, Natural Sciences
(603) 526-3682 |

Joined the faculty in 1991. Received B.A. from Hamilton College, M.A. and Ph.D. from Princeton University. Professor Thomas is a cellular and developmental biologist. His interests lie in developmental neurobiology with emphasis on cell-to-cell and cell-to-substratum adhesion. He recently completed a sabbatical leave during which he researched cell adhesion at the Curie Institute in Paris. His work there continues for six weeks each summer at the invitation of colleagues.

Peter A. White

Professor, Natural Sciences
(603) 526-3681 |

Joined the faculty in 2001. Received B.S. from University of Massachusetts-Dartmouth, Ph.D. from Indiana State University. Teaching interests include physiology, cellular pathophysiology, cellular biology and molecular biology. Professor White's research interests focus on the cellular and molecular events which characterize acute renal (kidney) failure. Specifically, the alterations to the cell membrane and the underlying actin cytoskeleton of renal proximal tubular cells in response to ATP-depletion. He is also interested in science education and is a member of the Association of College and University Biology Educators.