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Biology and Marine Biology 


Information: 796-6200

Fax: 796-6447



Anderson Bldg

11120 Glacier Hwy (AND1)

Juneau, AK 99801

Juneau Faculty

David Tallmon

Professor of Biology & Department Chair - Natural Sciences

Phone: 796-6330 Fax: 796-6447


Anderson Bldg, 205D

Juneau Campus

  • Ph.D. 2001, University of Montana
  • M.S. 1995, University of Montana
  • B.A. 1992, University of California Santa Cruz

My general interests are in evolution, ecology, and conservation biology.  My focus is on understanding the evolutionary and ecological dynamics of natural populations using demographic and genetic models, molecular genetic data, and field data.  I have long-standing interest in combining population genomics and demographic information to infer important evolutionary and demographic parameters for wild populations.  More recently, my post-docs and I have focused upon the role of phenotypic plasticity in adaptation.

I have used models based on likelihood and approximate Bayesian computation to infer demographic vital rates or effective population size with the goal of providing useful results and tools for conservation and evolutionary biology.  As an example, some collaborators and I have recently developed an approach to infer effective size of a population using a single sample of microsatellite data and approximate Bayesian computation. 

We focus on a number of different taxa in my lab, with current work on a handful of terrestrial and marine vertebrates and invertebrates, including: coastrange sculpins, giant Pacific octopus, red king crab, spruce grouse, file dogwinkles, ringed seals and boreal toads.  I enjoy working with students who are highly-motivated, broadly interested in evolution and conservation, and focused on understanding population-level process using descriptive and manipulative approaches.  Prospective grad students should read more here.


Curriculum vitae 
  • Society for the Study of Evolution
  • Ecological Society of America
  • Society for Conservation Biology
  • Wildlife Society of America
  • American Fisheries Society
  • B105 Fundamentals of Biology I
  • B106 Fundamentals of Biology II
  • B271 Ecology
  • B373 Conservation Biology
  • B375 Current Topics in Biology
  • B482 Evolution
  • B492 Biology Seminar
  • B498 Research in Biology
  • B396 Field Studies in Behavior and Ecology

Other Interests: telemark skiing, hiking, soccer and basketball

Sherry Tamone

Professor of Biology

Phone: 796-6599 Fax: 796-6447


Arts and Sciences - Natural Sciences - Biology

Anderson Bldg, 205A

Juneau Campus

My studies are concerned with the role of hormones in regulating physiological processes in decapod Crustacea (crabs and lobsters). Hormones are chemical mediators that regulate physiological processes such as growth, reproduction, and osmoregulation. I am interested in the mechanism by which hormones such as ecdysteroids, methyl farnesoate, and molt-inhibiting hormone regulate growth and reproduction in decapod crustaceans. The majority of crustaceans that I study are commercially important crabs. These include Dungeness crab, Cancer magister, snow crab, Chionoecetes opilio, and king crab, Paralithodes camtschaticus.

Ecdysteroids are crustacean hormones that function to regulate the molt cycle and therefore the growth of these animals. Methyl farnesoate is a sesquiterpenoid hormone derived from the mandibular organ that functions in both reproduction and growth. Methyl farnesoate also may be critical during crustacean larval development and morphogenesis. Methyl farnesoate is structurally similar to the insect juvenile hormones, which regulate insect development.

Other studies related to crustacean physiology involve the effect of endogenous crustacean hormones on ectoparasites. Specifically, I have an interest in how hormones (ecdysteroids, methyl farnesoate) can be exploited by certain parasites. The model for these studies is the infection of the Dungeness crab, Cancer magister by the nemertean worm, Carcinonemertes errans.

Curriculum vitae


  • B105 & B106 Fundamentals of Biology
  • B305 Invertebrate Zoology
  • B310 Animal Physiology
  • B375 Current Topics in Biology
  • B415 Physiology of Marine Organisms
  • B498 Research in Crustacean Biology

Carolyn A Bergstrom

Associate Professor of Marine Biology

Phone: 796-6582 Fax: 796-6447


Arts and Sciences - Natural Sciences - Biology

Anderson Bldg, 205B

Juneau Campus

  • B.S. 1995, University of Arizona (Tucson, Arizona)
  • Ph.D. 2002, University of Victoria (Victoria, British Columbia)
  • 2003-2007, Alberta Ingenuity Postdoctoral Fellow, Bamfield Marine Science Center
  • 2008-2009, International Polar Year Postdoctoral Fellow, University of Alaska Southeast

How does natural selection maintain phenotypic variation within marine species?  What role do ecological interactions like predation and competition play?  My research interests are broadly concerned with these questions.  More specifically, I investigate (1) how ecological interactions in the ocean orchestrate relationships between form, function, and fitness, (2) the ecofunctional implications of bilateral asymmetries, and (3) the interaction between phenotypic plasticity and heritable variation.   I explore these topics with a variety of techniques, including morphometrics and behavioral observations, field experiments, multivariate statistics, stable isotope analyses, and experimental assessment of fitness.

I currently have two main research projects underway. The first of these is the evolution of body asymmetry in flatfish. Flatfish exhibit remarkably derived body morphology.  They undergo metamorphosis as pelagic larvae, where one eye migrates over the dorsal midline so that both eyes are on the same side of the head.  The fish then lie on the ocean floor, eyed-side facing up.  While the vast majority of the 715 flatfish species contain all left-eyed or all right-eyed individuals, 7 species contain both morphs. To date, we don't have a good understanding of the evolutionary trajectory flatfish took to become asymmetric, or the significance of asymmetry direction.  One polymorphic species, the starry flounder, exhibits a cline in the north Pacific in the relative frequency of left- vs. right-eyed individuals, and the two morphs show evidence of ecological segregation. It is one of the first demonstrations of the ecological significance of polymorphism in a marine species, and contributes to our understanding how asymmetry evolved across the flatfish order. 

My second current research project involves how selective predation maintains variation in body color and color plasticity of sculpins.  Sculpins exhibit tremendous variation in their body coloration and their ability to change color both among and within populations.  Collaborators (David Tallmon, Andrew Whiteley, Tyler Linderoth) and I are currently investigating the role selective predation plays in molding the expression of color and color plasticity in these fish. This could have important implications to our understanding of color variation and ecological selection in other cryptic marine fish species such as juvenile flatfishes and gunnels.

Select publications
Curriculum vitae

  • BIOL 215 Introduction to Marine Biology
  • BIOL 375 Current Topics in Biology
  • BIOL 427 Introduction to Ichthyology
  • BIOL 481 Marine Ecology

Michael Stekoll

Professor of Chemistry and Biochemistry

Phone: 796-6279 Fax: 796-6447


Arts and Sciences - Natural Sciences - Biology

Anderson Bldg, 205E

Juneau Campus

  • B.S., 1971, Stanford University
  • Ph.D., 1976, University of California Los Angeles

The biological communities along most of the rocky shores of Alaska are defined by the marine plant associations. A major portion of the primary production throughout the year is provided by the benthic plants in the nearshore. These communities are often disturbed not only by natural phenomena, such as winter storms and ice, but also by anthropogenic disturbances such as harvesting and pollution.

My research has concentrated in both basic and applied aspects of the biology and ecology of marine benthic plants and on the effects of disturbances on this community. My associates and I have investigated the effects of harvest and pollution on the intertidal and subtidal seaweeds.  We have also developed techniques fore using remote sensing to map floating kelp beds in SE Alaska.

We have conducted applied research on the commercial exploitation of seaweeds. In addition to performing seaweed resource assessments for potential commercial harvest, we have investigated the potential of mariculture as a means to enhance exploited algal resources. There are many organisms that can be cultured which have potential to be developed as a high value product. Among these are seaweeds such as Macrocystis (giant kelp), Nereocystis (bull kelp) and Porphyra (nori).  My lab has worked out the procedures for the successful mariculture of Macrocystis.  We have researched the physiological ecology of Porphyra as it relates to its culture. This plant can be marketed both as nori for the sushi and health food market and as black seaweed for the Native community.  Our latest project is investigating nitrogen partitioning in the red alga Palmaria, a potential feed for abalone culture, throughout its growing season. I am also involved in kelp ecology and mariculture studies in South Africa in cooperation with colleagues at the University of Cape Town and Marine and Coastal Management.

Other "non seaweed" projects have involved the effects of pollution on salmon and herring. We completed research on the potential impacts of mining activities on the nearshore benthos, and have investigated the effects of common ions (hard water) from mine wastewater on the growth and development of coho salmon. Another project has been research on delayed effects of oil exposure on zebra fish as a model for salmonid exposure. 

Select Publications

Curriculum vitae

  • BIOL 401 Phycology
  • BIOL 482 Aquatic Pollution
  • CHEM 105 General Chemistry
  • CHEM 341 Organic Chemistry
  • CHEM 342 Biological Chemistry

Heidi Pearson

Assistant Professor of Marine Biology

Phone: 796-6271 Fax: 796-6447


Arts and Sciences - Natural Sciences - Biology

Anderson Bldg, Rm 205C

Juneau Campus

Ph.D., Texas A&M University, College Station, TX, 2008
B.S., Duke University, Durham, NC, 1998

Curriculum vitae (.pdf)

Go here to learn about my marine mammal research lab, BREACH, and read the latest updates from the field.

Biology of Marine Mammals (lecture and lab)
Cetacean Behavior and Behavioral Ecology (lab)
Conservation and Biology of Marine Birds and Sea Turtles (lecture)
Ecosystem Ecology and the Global Environment (lecture)
Human Anatomy and Physiology (lecture and lab)
Introduction to Biology (lecture and lab)
Marine Birds and Mammals (lecture and lab)
Marine Mammals and Ecosystem Change (seminar)
Marine Mammal Field Research Methods (lecture and lab)
Prospects for Planet Earth (lecture)

Johanna Fagen

Assistant Professor of Biology

Phone: 796-6395 Second Phone: 523-4977 Fax: 6447


Arts and Sciences - Natural Sciences - Biology

Anderson Bldg, 205G and Bill Ray Center 202

Juneau Campus

A.A.S. State University of New York at Farmingdale
B.S. Cornell University
M.A. West Chester University

S111 Human Anatomy and Physiology I
S112 Human Anatomy and Physiology II
B441 Animal Behavior
B300 Vertebrate Zoology
B103 Biology and Society

Keith Marlin Cox

Term Assistant Professor of Biology

Phone: 796-6586 Fax: 796-6447


Arts and Sciences - Natural Sciences - Biology

Anderson Bldg, 2056

Juneau Campus

Susan L. Kendig

Term Assistant Professor

Phone: 796-6275 Fax: 796-6447


Arts and Sciences - Natural Sciences - Chemistry

Anderson Bldg, Rm. 205F

Juneau Campus

Trevor Fritz

Chemistry Lab Technician

Phone: 796-6199 Fax: 796-6447


Arts and Sciences - Natural Sciences

Anderson Bldg, Rm. 309

Juneau Campus

Sitka Faculty

Deborah Barnett

Adjunct, Biology

Phone: 747-7700


Sitka Campus

University of Wisconsin-Madison:
B.S.   Biochemistry May 1990 
M.S.   Endocrinology and Reproductive Physiology Dec. 1992  
Ph.D. Cell and Molecular Biology: Developmental Biology Dec. 1995  

Research interests include prenatal programming metabolic and reproductive disorders, programming of the stress axis, neuroendocrine regulation of reproductive behavior and fertility, and the physiology/epidemiology of gestational weight gain in humans. I am interested in the physiological consequences that environmental disruption during important developmental stages can have on adult health.  In particular, I am interested in how the hypothalamus is programmed during its development.

Abbott DH, Bruns CR, Barnett DK, Dunaif A, Dumesic DA, Tarantal AF (2010) Experimentally-induced gestational androgen excess disrupts glucoregulation and stimulates growth in fetal and neonatal female rhesus monkeys J Clin Endocrinol Metab 95:2038-2049

Dumesic DA, Patankar MS, Barnett DK, Lesnick TG, Hutcherson BA, Abbott DH. (2009) Early prenatal androgenization results in diminished ovarian reserve in adult female rhesus monkeys. Hum Reprod 2009.

Abbott DH, Barnett DK, Levine JE, Padmanabhan V, Dumesic DA, Jacoris S, Tarantal AF. (2008)  Endocrine antecedents of polycystic ovary syndrome (PCOS) in fetal and infant prenatally androgenized female rhesus monkeys.  Biol Reprod Jul; 79(1):154-63.

Barnett DK, Bunnell, TM, Millar RP and Abbott DH. (2006) Gonadotropin-releasing hormone II stimulates female sexual behavior in marmoset monkeys. Endocrinol 147(1):615-23.

Abbott DH, Bruns CM, Barnett DK, Dumesic DA (2006) Fetal programming of polycystic ovary syndrome. In: Polycystic Ovary Syndrome, 2nd Edition. W.G. Kovacs and R.L. Norman (eds). Cambridge: Cambridge University Press; 262-287.

Abbott DH, Barnett DK, Bruns CM, Dumesic DA. (2005) Androgen excess fetal programming of female reproduction: a developmental aetiology for polycystic ovary syndrome? Hum Reprod Update 11(4):357-74. Review.

Abbott DH, Fong SC, Barnett DK, Dumesic DA (2004) Nonhuman primates contribute unique understanding to anovulatory infertility in women. ILAR 45(2):116-131.

Barnett DK, and Abbott DH. (2003) Reproductive adaptations to a large-brained fetus open a vulnerability to anovulation similar to polycystic ovary syndrome.  Am J Hum Bio 15:296-319.

Abbott DH, Barnett DK, Colman RJ and Schultz-Darken NJ. (2003) Aspects of basic biology and life history of common marmosets important for biomedical research.  J Comp Med 53:339-350.

Barnett DK, Kimura J, Clayton MK and Bavister BD. (1997) Glucose and phosphate toxicity in hamster preimplantation embryos involves disruption of cellular organization, including distribution of active mitochondria.  Molec Reprod Dev 48:1-11.

Barnett DK and Bavister BD. (1996) Inhibitory effect of glucose and phosphate on the second cleavage division of hamster embryos: is it linked to metabolism? Human Reprod 11:177-183.

Barnett DK, Kimura J, Bavister BD. (1996) Translocation of active mitochondria during hamster preimplantation embryo development studied by confocal laser scanning microscopy. Dev Dynamics 205, 64-72.

Barnett DK and Bavister BD. (1996) What is the relationship between metabolism of preimplantation embryos and their developmental competence in vitro.  Molec Reprod Dev 43, 105-143.

Barnett DK and Bavister BD. (1992) Hypotaurine requirement for in vitro development of golden hamster one-cell embryos into morulae and blastocysts, and production of term offspring from in vitro fertilized ova. Biol Reprod 47, 297-304.

Curriculum Vitae

B111: Anatomy and Physiology I
B112: Anatomy and Physiology II
B240: Introduction to Microbiology

Marnie Chapman

Professor, Biology

Phone: 747-7702


Arts and Sciences - Natural Sciences - Biology

Sitka Campus

M.S. Biology University of St. Joseph (Focus: Human Biology) 2008
M.A. Biology Humboldt State University (Focus: Intertidal Biology) 1992
B.A. Zoology Humboldt State University 1983
Graduate coursework at Friday Harbor Laboratory and Bamfield Marine Station

Special Recognition:

UA President’s Award for Outstanding Distance Educator in Alaska (2001)
UAS Faculty Excellence Award Sitka Campus (2012)

BIOL 111 Human Anatomy & Physiology I
BIOL 112 Human Anatomy & Physiology II

Past Courses Taught:

Microbiology, Natural History of Alaska, Intertidal Biology, General Biology, Biology & Society,
General Zoology, Alaska Naturalist Program; Science for K-8 Teachers

I’m originally from Northern California and lived in Bethel and Skagway before moving to Sitka in 1992. I enjoy helping students build a firm foundation in the topic that will serve them well in their careers. I am active in the Human Anatomy and Physiology Society (HAPS).  As part of HAPS I helped develop standards for undergraduate human anatomy and physiology courses taught in the US and Canada. I am committed to quality eLearning opportunities and developed and delivered the first distance science courses offered by UAS. As Sitka’s lab director I currently help oversee the lab support portion of UAS Sitka Distance Science courses which have grown to involve multiple faculty members and currently serve over 200 students each semester.  I believe it is important to give back to my community by doing what I can to enrich science literacy, assist in community-based scientific research, and help create science-related opportunities for everyone, especially K-12 students.

Community Projects:

  • Served as an invited researcher for Scientist in the Schools programs at elementary, middle, and high school levels.
  • Helped establish science clubs at the local elementary and middle school that give kids a chance to interact with scientists and collect data for meaningful research projects.
  • Found opportunities for K-12 students to meet and work with scientists from the Smithsonian Environmental Research Center, UCSF, UAF and Project Budburst.
  • Assisted with marine invertebrate identification for community BioBlitzes and provided intertidal ecology expertise for many community organizations.
  • Involved in a project to revisit historical work done in Sitka by Ed (Doc) Ricketts and link it to modern intertidal survey protocols.

I am particularly interested in the ecology and functional anatomy of intertidal organisms, especially with respect to predator-prey relationships.  I am also very involved in marine invasive issues and research, particularly with respect to invasive tunicates. I am a member of the Alaska Marine Invasive Species subcommittee and the Didemnum vexillum Rapid Response Team.

Jan Straley

Associate Professor, Marine Biology

Phone: 747-7779


Arts and Sciences - Natural Sciences - Biology

Sitka Campus

Kitty LaBounty

Assistant Professor, Biology

Phone: 747-9432


Arts and Sciences - Natural Sciences - Biology

Sitka Campus

Paul Bahna

Assistant Professor, Biology

Phone: 747-7749


Arts and Sciences - Natural Sciences - Biology

Sitka Campus

Jon Martin

Assistant Professor, Biology

Phone: 747-7752


Arts and Sciences - Natural Sciences - Biology

Sitka Campus

Ketchikan Faculty

Christopher Donar

Assistant Professor of Science

Phone: 228-4557


Arts and Sciences Department

Paul Bldg, Room 510

Ketchikan Campus

University of Michigan-Ann Arbor (1994 - 1999)  

Ph. D., Natural Resources and Environment

Dissertation: Holocene Paleolimnology of Lakes in the Central Highlands Region of Florida.

Eastern Michigan University-Ypsilanti (1990 - 1992)

M. S., Biology

Thesis: Paleolimnology of the Ford Lake Reservoir.    


Eastern Michigan University-Ypsilanti (1982 - 1988)

B. S., Biology

My research interests are in the ecology, taxonomy and systematics of diatoms (Bacillariophyta) and other freshwater algae. I am particularly interested in paleolimnology and the use of diatoms to infer short-term historical changes in aquatic ecosystems due to human modification and long-term changes in response to climatic factors. I feel that among algal groups, diatoms can provide numerous research opportunities in ecological studies, paleoecology, cell physiology, and systematic biology. I have conducted field research on the growth characteristics of periphyton mats in the Florida Everglades. Presently, I am investigating the taxonomy of algal assemblages in lakes and aquatic ecosystems of Isle Royale National Park. 

Born in Des Moines Iowa, raised in Southeast Michigan. I am a practicing member of the Hakuryu Karate Do and have attained the rank of Nidan, 2nd degree black belt. 


Sara Caldwell

Biology Lab Technician

Phone: 796-6316 Second Phone: 723-8081


Arts and Sciences - Natural Sciences - Biology

Anderson Bldg, Rm 310

Juneau Campus

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