Amanda Demopoulos, Ph.D.
I lead multidisciplinary investigations into coastal and deep-sea benthic communities funded by USGS-EMA and partners, including BOEM and NOAA, that pull together scientists and experts from across USGS, as well as NOAA, BOEM, and many academic institutions. Deep-sea investigations are complex and logistically challenging and require an interdisciplinary approach to disentangle what makes them tick.
Science and Products
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Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill
Extensive information is available about infaunal soft-sediment communities in the Gulf of Mexico (Gulf) (Pequegnat et al. 1990, Rowe and Kennicutt II 2009, Wei et al. 2010), particularly from the large-scale sampling effort of the Deep Gulf of Mexico Benthos (DGOMB) project in the early 2000s (Rowe and Kennicutt II 2009). Infaunal soft-sediment communities in the northern Gulf differ by
Authors
Jill R. Bourque, Amanda W.J. Demopoulos
Estimating the value of mangrove leaf litter in sesarmid crab diets: The importance of fractionation factors Estimating the value of mangrove leaf litter in sesarmid crab diets: The importance of fractionation factors
Sesarmid crabs play an important role in organic matter and carbon cycling of mangrove forests. Visual observations and gut content studies have verified that sesarmid crabs are feeding on mangrove leaves, yet stable isotopes of carbon and nitrogen (13C and 15N) have indicated that leaf litter is not assimilated as a food source. Sesarmid crabs tend to be much more enriched in 13C than...
Authors
R.A. MacKenzie, N. Cormier, Amanda Demopoulos
Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models
Chemosynthetic environments support distinct benthic communities capable of utilizing reduced chemical compounds for nutrition. Hundreds of methane seeps have been documented along the U.S. Atlantic margin (USAM), and detailed investigations at a few seeps have revealed distinct environments containing mussels, microbial mats, authigenic carbonates, and soft sediments. The dominant...
Authors
Amanda Demopoulos, Jennifer McClain Counts, Jill R. Bourque, Nancy G. Prouty, Brian Smith, Sandra Brooke, Steve W. Ross, Carolyn Ruppel
Molecular characterization of Bathymodiolus mussels and gill symbionts associated with chemosynthetic habitats from the U.S. Atlantic margin Molecular characterization of Bathymodiolus mussels and gill symbionts associated with chemosynthetic habitats from the U.S. Atlantic margin
Mussels of the genus Bathymodiolus are among the most widespread colonizers of hydrothermal vent and cold seep environments, sustained by endosymbiosis with chemosynthetic bacteria. Presumed species of Bathymodiolus are abundant at newly discovered cold seeps on the Mid-Atlantic continental slope, however morphological taxonomy is challenging, and their phylogenetic affinities remain...
Authors
Dolly Coykendall, Robert S. Cornman, Nancy G. Prouty, Sandra Brooke, Amanda W. J. Demopoulos, Cheryl L. Morrison
Deep search: Deep sea exploration to advance research on coral/canyon/cold seep habitats Deep search: Deep sea exploration to advance research on coral/canyon/cold seep habitats
Led by the Bureau of Ocean Energy Management (BOEM), the United States Geological Survey (USGS), and OER is an interagency partnership to explore and characterize sensitive deepwater habitats of the U.S. mid- and south Atlantic deep-sea habitats. Sponsored by the National Oceanographic Partnership Program, the study has brought together scientists from six U.S. academic institutions and...
Authors
Erik E. Cordes, Amanda W.J. Demopoulos, Michael Rasser, Caitlin Adams
The influence of seep habitats on sediment macrofaunal biodiversity and functional traits The influence of seep habitats on sediment macrofaunal biodiversity and functional traits
Chemosynthetic ecosystems in the Gulf of Mexico (GOM) support dense communities of seep megafaunal invertebrates that rely on endosymbiotic bacteria for nutrition. Distinct infaunal communities are associated with the biogenic habitats created by seep biota, where habitat heterogeneity and sediment geochemistry influence local macrofaunal community structure. Here we examine the...
Authors
Amanda W. J. Demopoulos, Jill R. Bourque, Alanna Durkin, Erik E. Cordes
Non-USGS Publications**
Demopoulos, A.W.J., B. Fry., C.R. Smith. 2007. Food-web structure in exotic and native mangroves: a Hawaii-Puerto Rico comparison, Oecologia. 153:675-686.
Cordes EE, Berlet SP, Cardman Z, Dannenberg R, Demopoulos AWJ, Georgian SE, King C, McKean DL, Young DM. 2014. Exploring deep-sea coral communities and the effects of oil and gas inputs to the Gulf of Mexico. Oceanography 27(supplement): 28-29. doi:10.5670/oceanog.2014.supplement.01
ten Brink, U., D.F. Coleman, J. Chaytor, A.W.J. Demopoulos, R. Armstrong, G. Garcia-Moliner, N.A. Raineault, B. Andrews, R. Chastain, K. Rodrigue, M. Mercier-Gingras. 2014. Earthquake, Landslide, and Tsunami Hazards and Benthic Biology in the Greater Antilles. Oceanography 27(supplement): 34-35. doi:10.5670/oceanog.2014.supplement.01
Morrison, C.L., Baco, A.R., Nizinski, M.S., Coykendall, D.K., Demopoulos, A.W.J., Cho, W., Shank, T.M. 2014. Population connectivity of deep-sea corals. In: T.F. Hourigan, P. Etnoyer (Eds). The State of Deep Coral Ecosystems of the United States: NOAA Technical Memorandum. Silver Spring, MD. In Press.
Demopoulos, A.W.J. and C.R. Smith. 2010. Invasive mangroves alter macrofaunal community structure and facilitate opportunistic exotics. Mar. Ecol. Prog. Ser. 404:51-67
Fry, B., N. Cormier, and A.W.J. Demopoulos 2009. Adventures in an isotopically ordered world-the chemical ecology of Micronesian mangroves and crabs, Pages 50-56 in N. Yoshida, ed., Proceedings of the 4th International Conference on Isotopomers, ISI2008-18, 292 pp.
Demopoulos, A.W.J. 2004. Black Mangrove Benthic Community Structure, Seedling Growth and Survival, and Sediment Characteristics in Anthropogenically Disturbed and Pristine Habitats, NOAA/NERR final report, Jobos Bay National Estuarine Research Reserve, Puerto Rico.
Demopoulos, A.W.J. 2003. Introduced mangroves in the Hawaiian Islands: Their history and impact on Hawaiian coastal ecosystems. In: Global Invasive Species Programme-Invasive Species Report following the conference on the Ecological and Socio-Economic Impacts of Invasive Alien Species on Island Ecosystems.
Demopoulos, A.W.J. 2004. Aliens in paradise: a comparative assessment of introduced and native mangrove benthic community composition, food-web structure, and litter-fall production. Ph.D. Thesis. Dept. of Oceanography, University of Hawaii.
Smith, C.R. and A.W.J. Demopoulos. 2003. Ecology of the deep Pacific Ocean floor. In: Ecosystems of the World Volume 28: Ecosystems of the Deep Ocean, P.A. Tyler, ed., Elsevier, Amsterdam, 569 pp.
Demopoulos, A.W.J., C.R. Smith, and P.A. Tyler. 2003. Ecology of the deep Indian Ocean floor. In: Ecosystems of the World Volume 28: Ecosystems of the Deep Ocean, P.A. Tyler, ed., Elsevier, Amsterdam. 569 pp.
Demopoulos, A.W.J., C.R. Smith, D.J. DeMaster and W. Fornes. 2003. Evaluation of excess 234Th activity in sediments as an indicator of food quality for deep-sea deposit feeders. J. Mar. Res. 61:267-284.
Demopoulos, A.W.J. 2000. Evaluation of excess 234Th activity in sediments as an indicator of food quality for deep-sea deposit feeders, M.S. Thesis. Dept. of Oceanography, University of Hawaii.
Levin, L.A., fT.S. Talley, A.A. Larson, A. Jones*. 1997. Faunal composition in the Tijuana River Estuary Intertidal Habitats and the role of life histories in the faunal recovery of Southern California Restored Wetlands. Final Report to the Tijuana River National Estuarine Research Reserve. NOAA Award, No. NA 670R0237. NOAA.
Levin, L., D. Talley, T. Talley, A. Larson, A. Jones*, G. Thayer, C. Currin, and C. Lund. 1997. Restoration of Spartina marsh function: An infaunal perspective. Conference Proceedings, Society for Ecological Restoration, 1995 International Conference. Seattle, Washington. Sept. 14-16, 1995.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
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Science and Products
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Filter Total Items: 28
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Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill Quantifying changes to infaunal communities associated with several deep-sea coral habitats in the Gulf of Mexico and their potential recovery from the DWH oil spill
Extensive information is available about infaunal soft-sediment communities in the Gulf of Mexico (Gulf) (Pequegnat et al. 1990, Rowe and Kennicutt II 2009, Wei et al. 2010), particularly from the large-scale sampling effort of the Deep Gulf of Mexico Benthos (DGOMB) project in the early 2000s (Rowe and Kennicutt II 2009). Infaunal soft-sediment communities in the northern Gulf differ by
Authors
Jill R. Bourque, Amanda W.J. Demopoulos
Estimating the value of mangrove leaf litter in sesarmid crab diets: The importance of fractionation factors Estimating the value of mangrove leaf litter in sesarmid crab diets: The importance of fractionation factors
Sesarmid crabs play an important role in organic matter and carbon cycling of mangrove forests. Visual observations and gut content studies have verified that sesarmid crabs are feeding on mangrove leaves, yet stable isotopes of carbon and nitrogen (13C and 15N) have indicated that leaf litter is not assimilated as a food source. Sesarmid crabs tend to be much more enriched in 13C than...
Authors
R.A. MacKenzie, N. Cormier, Amanda Demopoulos
Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models
Chemosynthetic environments support distinct benthic communities capable of utilizing reduced chemical compounds for nutrition. Hundreds of methane seeps have been documented along the U.S. Atlantic margin (USAM), and detailed investigations at a few seeps have revealed distinct environments containing mussels, microbial mats, authigenic carbonates, and soft sediments. The dominant...
Authors
Amanda Demopoulos, Jennifer McClain Counts, Jill R. Bourque, Nancy G. Prouty, Brian Smith, Sandra Brooke, Steve W. Ross, Carolyn Ruppel
Molecular characterization of Bathymodiolus mussels and gill symbionts associated with chemosynthetic habitats from the U.S. Atlantic margin Molecular characterization of Bathymodiolus mussels and gill symbionts associated with chemosynthetic habitats from the U.S. Atlantic margin
Mussels of the genus Bathymodiolus are among the most widespread colonizers of hydrothermal vent and cold seep environments, sustained by endosymbiosis with chemosynthetic bacteria. Presumed species of Bathymodiolus are abundant at newly discovered cold seeps on the Mid-Atlantic continental slope, however morphological taxonomy is challenging, and their phylogenetic affinities remain...
Authors
Dolly Coykendall, Robert S. Cornman, Nancy G. Prouty, Sandra Brooke, Amanda W. J. Demopoulos, Cheryl L. Morrison
Deep search: Deep sea exploration to advance research on coral/canyon/cold seep habitats Deep search: Deep sea exploration to advance research on coral/canyon/cold seep habitats
Led by the Bureau of Ocean Energy Management (BOEM), the United States Geological Survey (USGS), and OER is an interagency partnership to explore and characterize sensitive deepwater habitats of the U.S. mid- and south Atlantic deep-sea habitats. Sponsored by the National Oceanographic Partnership Program, the study has brought together scientists from six U.S. academic institutions and...
Authors
Erik E. Cordes, Amanda W.J. Demopoulos, Michael Rasser, Caitlin Adams
The influence of seep habitats on sediment macrofaunal biodiversity and functional traits The influence of seep habitats on sediment macrofaunal biodiversity and functional traits
Chemosynthetic ecosystems in the Gulf of Mexico (GOM) support dense communities of seep megafaunal invertebrates that rely on endosymbiotic bacteria for nutrition. Distinct infaunal communities are associated with the biogenic habitats created by seep biota, where habitat heterogeneity and sediment geochemistry influence local macrofaunal community structure. Here we examine the...
Authors
Amanda W. J. Demopoulos, Jill R. Bourque, Alanna Durkin, Erik E. Cordes
Non-USGS Publications**
Demopoulos, A.W.J., B. Fry., C.R. Smith. 2007. Food-web structure in exotic and native mangroves: a Hawaii-Puerto Rico comparison, Oecologia. 153:675-686.
Cordes EE, Berlet SP, Cardman Z, Dannenberg R, Demopoulos AWJ, Georgian SE, King C, McKean DL, Young DM. 2014. Exploring deep-sea coral communities and the effects of oil and gas inputs to the Gulf of Mexico. Oceanography 27(supplement): 28-29. doi:10.5670/oceanog.2014.supplement.01
ten Brink, U., D.F. Coleman, J. Chaytor, A.W.J. Demopoulos, R. Armstrong, G. Garcia-Moliner, N.A. Raineault, B. Andrews, R. Chastain, K. Rodrigue, M. Mercier-Gingras. 2014. Earthquake, Landslide, and Tsunami Hazards and Benthic Biology in the Greater Antilles. Oceanography 27(supplement): 34-35. doi:10.5670/oceanog.2014.supplement.01
Morrison, C.L., Baco, A.R., Nizinski, M.S., Coykendall, D.K., Demopoulos, A.W.J., Cho, W., Shank, T.M. 2014. Population connectivity of deep-sea corals. In: T.F. Hourigan, P. Etnoyer (Eds). The State of Deep Coral Ecosystems of the United States: NOAA Technical Memorandum. Silver Spring, MD. In Press.
Demopoulos, A.W.J. and C.R. Smith. 2010. Invasive mangroves alter macrofaunal community structure and facilitate opportunistic exotics. Mar. Ecol. Prog. Ser. 404:51-67
Fry, B., N. Cormier, and A.W.J. Demopoulos 2009. Adventures in an isotopically ordered world-the chemical ecology of Micronesian mangroves and crabs, Pages 50-56 in N. Yoshida, ed., Proceedings of the 4th International Conference on Isotopomers, ISI2008-18, 292 pp.
Demopoulos, A.W.J. 2004. Black Mangrove Benthic Community Structure, Seedling Growth and Survival, and Sediment Characteristics in Anthropogenically Disturbed and Pristine Habitats, NOAA/NERR final report, Jobos Bay National Estuarine Research Reserve, Puerto Rico.
Demopoulos, A.W.J. 2003. Introduced mangroves in the Hawaiian Islands: Their history and impact on Hawaiian coastal ecosystems. In: Global Invasive Species Programme-Invasive Species Report following the conference on the Ecological and Socio-Economic Impacts of Invasive Alien Species on Island Ecosystems.
Demopoulos, A.W.J. 2004. Aliens in paradise: a comparative assessment of introduced and native mangrove benthic community composition, food-web structure, and litter-fall production. Ph.D. Thesis. Dept. of Oceanography, University of Hawaii.
Smith, C.R. and A.W.J. Demopoulos. 2003. Ecology of the deep Pacific Ocean floor. In: Ecosystems of the World Volume 28: Ecosystems of the Deep Ocean, P.A. Tyler, ed., Elsevier, Amsterdam, 569 pp.
Demopoulos, A.W.J., C.R. Smith, and P.A. Tyler. 2003. Ecology of the deep Indian Ocean floor. In: Ecosystems of the World Volume 28: Ecosystems of the Deep Ocean, P.A. Tyler, ed., Elsevier, Amsterdam. 569 pp.
Demopoulos, A.W.J., C.R. Smith, D.J. DeMaster and W. Fornes. 2003. Evaluation of excess 234Th activity in sediments as an indicator of food quality for deep-sea deposit feeders. J. Mar. Res. 61:267-284.
Demopoulos, A.W.J. 2000. Evaluation of excess 234Th activity in sediments as an indicator of food quality for deep-sea deposit feeders, M.S. Thesis. Dept. of Oceanography, University of Hawaii.
Levin, L.A., fT.S. Talley, A.A. Larson, A. Jones*. 1997. Faunal composition in the Tijuana River Estuary Intertidal Habitats and the role of life histories in the faunal recovery of Southern California Restored Wetlands. Final Report to the Tijuana River National Estuarine Research Reserve. NOAA Award, No. NA 670R0237. NOAA.
Levin, L., D. Talley, T. Talley, A. Larson, A. Jones*, G. Thayer, C. Currin, and C. Lund. 1997. Restoration of Spartina marsh function: An infaunal perspective. Conference Proceedings, Society for Ecological Restoration, 1995 International Conference. Seattle, Washington. Sept. 14-16, 1995.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Filter Total Items: 27