If this page doesn't display, reset your browser by holding the "shift" key while pressing the "reload" option. Contact the GCMD Help Desk for assistance.

Record Search Query:
Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing
Entry ID: USAP-1341333_1

[Get Data]


The coastal environments of the western Antarctic Peninsula harbor rich assemblages of marine animals and algae. The importance of the interactions between these groups of organisms in the ecology of coastal Antarctica are well known and often mediated by chemical defenses in the tissues of the algae. These chemicals are meant to deter feeding by snails and other marine animals making the ...

The near shore environments of the western Antarctic Peninsula harbor rich assemblages of macroalgae and macroinvertebrates. The importance of predator-prey interactions and chemical defenses in mediating community-wide trophic interactions makes the western Antarctic Peninsula an excellent place to ask important questions about the functional and evolutionary significance of defensive compound diversity for marine communities. This project will focus on three main objectives which are a direct outcome of the past studies of the chemical ecology of shallow-water marine macroalgae and invertebrates on the Antarctic Peninsula by this group of investigators. The first objective is to expand the current understanding of a community-wide mutualism between macroalgae and their associated amphipods to include gastropods, which are also abundant on many macroalgae. The second objective focuses on the diversity of chemical compounds used to defend macroalgae from being consumed, particularly in the common red alga Plocamium cartilagineum. The third objective seeks to understand the relationship between P. cartilagineum and the amphipod Paradexamine fissicauda, including the ecological benefits and costs to P. fissicauda resulting from the ability to consume P. cartilagineum and other chemically defended red algae. The investigators will focus on the costs and benefits related to the ability of P. fissicauda to sequester defensive compounds from the alga P. cartilagineum and use those chemicals to defend itself from predation. The field components of this research will be performed during three expeditions to Palmer Station, Antarctica. During these expeditions, a variety of laboratory feeding bioassays, manipulative field and laboratory experiments, and on-site chemical analyses will be performed. Phylogenetic analyses, detailed secondary metabolite chemical analyses and purifications, and other data analyses will also be performed at the investigators' home institutions between and after their field seasons.

View entire text
Related URL
Description: NSF Award Abstract
View entire list
Data Set Citation
Version: 1
Temporal Coverage
Start Date: 2014-08-01T00:00:00.000Z
Stop Date: 2019-07-31T23:59:59.999Z
Location Keywords
Not applicable
Ancillary Keywords
Data Set Progress
Data Center
United States Antarctic Program Data Center
Data Center URL: http://www.usap-dc.org/

Data Center Personnel
Name: Data Manager
Email: info at usap-dc.org
Contact Address:
Lamont-Doherty Earth Observatory
61 Route 9W
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA
Charles Amsler
Email: amsler at uab.edu
Contact Address:
University of Alabama at Birmingham
View entire list
Amsler, C.D., M.O. Amsler, M.D. Curtis, J.B. McClintock, & B.J. Baker (2019-01-01T00:00:00.000Z), Impacts of macroalgal-associated gastropods on epiphytic microalgae on the ecologically important Antarctic brown alga Himantothallus grandifolius, Antarctic Science, 31, doi:10.1017/S0954102019000014

von Salm, J.L., K.M. Schoenrock, J.B. McClintock, C.D. Amsler, & B.J. Baker (2019-01-01T00:00:00.000Z), The status of marine chemical ecology in Antarctica: form and function of unique high-latitude chemistry. Puglisi, M.P. & M.A. Becerro (eds.), Chemical Ecology: The Ecological Impacts of Marine Natural Products, pp. 27-69, CRC Press
Extended Metadata Properties
Click to view more (Click to view more)

Creation and Review Dates
DIF Creation Date: 2019-03-05
Last DIF Revision Date: 2019-10-15