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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Discovering the deep: Exploring remote Pacific marine protected areas Discovering the deep: Exploring remote Pacific marine protected areas
The 2017 Discovering the Deep expedition provided the first glimpse of the deep-sea geology and ecology of the deepwater regions of Swains Island, the Howland and Baker Islands Unit of PRIMNM, Phoenix Islands Protected Areas (PIPA), and the Tokelau Region (Figure 1). Prior to this expedition, virtually no visual reconnaissance had been conducted in any of these areas below scuba diving...
Authors
Amanda W.J. Demopoulos, Steven Auscavitch, Derek Sowers, Nikolai Pawlenko, Brian R. C. Kennedy
Deepwater Program: Lophelia II, continuing ecological research on deep-sea corals and deep-reef habitats in the Gulf of Mexico Deepwater Program: Lophelia II, continuing ecological research on deep-sea corals and deep-reef habitats in the Gulf of Mexico
The deep sea is a rich environment composed of diverse habitat types. While deep-sea coral habitats have been discovered within each ocean basin, knowledge about the ecology of these habitats and associated inhabitants continues to grow. This report presents information and results from the Lophelia II project that examined deep-sea coral habitats in the Gulf of Mexico. The Lophelia II...
Authors
Amanda W.J. Demopoulos, Steve W. Ross, Christina A. Kellogg, Cheryl L. Morrison, Martha S. Nizinski, Nancy G. Prouty, Jill R. Bourque, Julie P. Galkiewicz, Michael A. Gray, Marcus J. Springmann, D. Katharine Coykendall, Andrew Miller, Mike Rhode, Andrea Quattrini, Cheryl L. Ames, Sandra D. Brooke, Jennifer P. McClain-Counts, E. Brendan Roark, Noreen A. Buster, Ryan M. Phillips, Janessy Frometa
Effects of host injury on susceptibility of marine reef fishes to ectoparasitic gnathiid isopods Effects of host injury on susceptibility of marine reef fishes to ectoparasitic gnathiid isopods
The importance of the role that parasites play in ecological communities is becoming increasingly apparent. However much about their impact on hosts and thus populations and communities remains poorly understood. A common observation in wild populations is high variation in levels of parasite infestation among hosts. While high variation could be due to chance encounter, there is...
Authors
William G. Jenkins, Amanda W.J. Demopoulos, Paul C. Sikkel
Food-web dynamics and isotopic niches in deep-sea communities residing in a submarine canyon and on the adjacent open slopes Food-web dynamics and isotopic niches in deep-sea communities residing in a submarine canyon and on the adjacent open slopes
Examination of food webs and trophic niches provide insights into organisms' functional ecology, yet few studies have examined trophodynamics within submarine canyons, where the interaction of canyon morphology and oceanography influences habitat provision and food deposition. Using stable isotope analysis and Bayesian ellipses, we documented deep-sea food-web structure and trophic...
Authors
Amanda W.J. Demopoulos, Jennifer McClain-Counts, Steve W. Ross, Sandra Brooke, Furu Mienis
Deep-sea coral research and technology program: Alaska deep-sea coral and sponge initiative final report Deep-sea coral research and technology program: Alaska deep-sea coral and sponge initiative final report
Deep-sea coral and sponge ecosystems are widespread throughout most of Alaska’s marine waters. In some places, such as the central and western Aleutian Islands, deep-sea coral and sponge resources can be extremely diverse and may rank among the most abundant deep-sea coral and sponge communities in the world. Many different species of fishes and invertebrates are associated with deep-sea...
Authors
Chris Rooper, Robert P. Stone, Peter Etnoyer, Christina Conrath, Jennifer Reynolds, H. Gary Greene, Branwen Williams, Enrique Salgado, Cheryl L. Morrison, Rhian G. Waller, Amanda W.J. Demopoulos
Trophic structure of mesopelagic fishes in the Gulf of Mexico revealed by gut content and stable isotope analyses Trophic structure of mesopelagic fishes in the Gulf of Mexico revealed by gut content and stable isotope analyses
Mesopelagic fishes represent an important component of the marine food web due to their global distributions, high abundances and ability to transport organic material throughout a large part of the water column. This study combined stable isotope (SIAs) and gut content analyses (GCAs) to characterize the trophic structure of mesopelagic fishes in the North-Central Gulf of Mexico...
Authors
Jennifer P. McClain-Counts, Amanda W.J. Demopoulos, Steve W. Ross
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
Science and Products
Filter Total Items: 19
Filter Total Items: 28
No Result Found
Filter Total Items: 80
Discovering the deep: Exploring remote Pacific marine protected areas Discovering the deep: Exploring remote Pacific marine protected areas
The 2017 Discovering the Deep expedition provided the first glimpse of the deep-sea geology and ecology of the deepwater regions of Swains Island, the Howland and Baker Islands Unit of PRIMNM, Phoenix Islands Protected Areas (PIPA), and the Tokelau Region (Figure 1). Prior to this expedition, virtually no visual reconnaissance had been conducted in any of these areas below scuba diving...
Authors
Amanda W.J. Demopoulos, Steven Auscavitch, Derek Sowers, Nikolai Pawlenko, Brian R. C. Kennedy
Deepwater Program: Lophelia II, continuing ecological research on deep-sea corals and deep-reef habitats in the Gulf of Mexico Deepwater Program: Lophelia II, continuing ecological research on deep-sea corals and deep-reef habitats in the Gulf of Mexico
The deep sea is a rich environment composed of diverse habitat types. While deep-sea coral habitats have been discovered within each ocean basin, knowledge about the ecology of these habitats and associated inhabitants continues to grow. This report presents information and results from the Lophelia II project that examined deep-sea coral habitats in the Gulf of Mexico. The Lophelia II...
Authors
Amanda W.J. Demopoulos, Steve W. Ross, Christina A. Kellogg, Cheryl L. Morrison, Martha S. Nizinski, Nancy G. Prouty, Jill R. Bourque, Julie P. Galkiewicz, Michael A. Gray, Marcus J. Springmann, D. Katharine Coykendall, Andrew Miller, Mike Rhode, Andrea Quattrini, Cheryl L. Ames, Sandra D. Brooke, Jennifer P. McClain-Counts, E. Brendan Roark, Noreen A. Buster, Ryan M. Phillips, Janessy Frometa
Effects of host injury on susceptibility of marine reef fishes to ectoparasitic gnathiid isopods Effects of host injury on susceptibility of marine reef fishes to ectoparasitic gnathiid isopods
The importance of the role that parasites play in ecological communities is becoming increasingly apparent. However much about their impact on hosts and thus populations and communities remains poorly understood. A common observation in wild populations is high variation in levels of parasite infestation among hosts. While high variation could be due to chance encounter, there is...
Authors
William G. Jenkins, Amanda W.J. Demopoulos, Paul C. Sikkel
Food-web dynamics and isotopic niches in deep-sea communities residing in a submarine canyon and on the adjacent open slopes Food-web dynamics and isotopic niches in deep-sea communities residing in a submarine canyon and on the adjacent open slopes
Examination of food webs and trophic niches provide insights into organisms' functional ecology, yet few studies have examined trophodynamics within submarine canyons, where the interaction of canyon morphology and oceanography influences habitat provision and food deposition. Using stable isotope analysis and Bayesian ellipses, we documented deep-sea food-web structure and trophic...
Authors
Amanda W.J. Demopoulos, Jennifer McClain-Counts, Steve W. Ross, Sandra Brooke, Furu Mienis
Deep-sea coral research and technology program: Alaska deep-sea coral and sponge initiative final report Deep-sea coral research and technology program: Alaska deep-sea coral and sponge initiative final report
Deep-sea coral and sponge ecosystems are widespread throughout most of Alaska’s marine waters. In some places, such as the central and western Aleutian Islands, deep-sea coral and sponge resources can be extremely diverse and may rank among the most abundant deep-sea coral and sponge communities in the world. Many different species of fishes and invertebrates are associated with deep-sea...
Authors
Chris Rooper, Robert P. Stone, Peter Etnoyer, Christina Conrath, Jennifer Reynolds, H. Gary Greene, Branwen Williams, Enrique Salgado, Cheryl L. Morrison, Rhian G. Waller, Amanda W.J. Demopoulos
Trophic structure of mesopelagic fishes in the Gulf of Mexico revealed by gut content and stable isotope analyses Trophic structure of mesopelagic fishes in the Gulf of Mexico revealed by gut content and stable isotope analyses
Mesopelagic fishes represent an important component of the marine food web due to their global distributions, high abundances and ability to transport organic material throughout a large part of the water column. This study combined stable isotope (SIAs) and gut content analyses (GCAs) to characterize the trophic structure of mesopelagic fishes in the North-Central Gulf of Mexico...
Authors
Jennifer P. McClain-Counts, Amanda W.J. Demopoulos, Steve W. Ross
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