College of Natural and Computational Sciences

Samuel E. Kahng , Ph.D.

Samuel E. Kahng , Ph.D.Sam Kahng

Associate Professor of Oceanography

HPU Email: skahng@hpu.edu

Office Telephone: 808-236-3562

Office FAX: 808-544-1159

Office Location: HPU Marine Science Program Office, Oceanic Institute,

41-202 Kalaniana'ole Highway, Waimanalo, HI 96795, USA

Ph.D. Oceanography, University of Hawaii

B.A. Physics, Carleton College

Research Interests:

My research interests are in coral reef ecology. For my dissertation, I researched the biology and ecology of an invasive octocoral species and analyzed it in the context of invasion ecology to explain its ecological success in Hawaii. In general, I am interested in how life history traits (especially reproductive systems) relate to the ecological strategies of dominant benthic organisms. I am also interested in the environmental limits of dominant organisms and the mechanisms underlying those limits. Gaining insight into these issues will enable better forecasting of ecosystem response to global climate change (e.g., ocean acidification, warming, disturbance regime, etc.). I am currently investigating the ecological and physiological mechanisms that enable deep-water, photosynthetic corals to thrive where the dominant, shallow-water reef building corals become light limited. The ecology of this “twilight zone” where skiophilous (shade loving) fauna readily compete for space with photosynthetic organisms is poorly understood despite the large amount of nearshore habitat within this depth range. In Hawaii, vast beds of zooxanthellate scleractinian corals (Leptoseris spp.) form deep reefs and bioherms which provide habitat for an abundance of reef fish and invertebrates. In collaboration with the Waikiki Aquarium, we have initiated the world’s first culture of deep-water Leptoseris spp. collected 70-110 m and are in the process of studying the photobiology of these exceptional organisms.

For prospective MSMS graduate students who are interested in future enrollment, I have the following ongoing and potential projects: ocean acidification & coastal ocean carbonate chemistry (in collaboration with Dr. Chris Winn); fisheries management & quantitative modeling; mesophotic coral eco-physiology; and deep-water precious coral ecology. Prospective HPU MSMS graduate students who are interested in joining my lab are encouraged to contact me via email. Please include a CV/resume, unofficial copy of transcript, and short statement of research & career interests.

 

Marine Science Graduate Students:

Cassandra Pardee, Stock assessment of parrotfish in Hawaii

Dan Luck, Taxonomy and phylogeny of deep-water zooxanthellate corals (Leptoseris spp.) in Hawaii

Martha Maciasz, Stock assessment of the endemic white saddle goatfish Parupeneus porphyreus in Hawaii

Paula Lam, Reproduction of the endemic octocoral Sarcothelia edmondsoni in Hawaii

Lennon Thomas, Stock assessment of the Kona crab (Ranina ranina) fishery in Hawaii (graduated 2011)

Coulson Lanz, Spatio-temporal variability of the carbonate water chemistry in coastal Oahu (graduated 2011)

Peer Reviewed Publications:

Kahng, SE, D Wagner, J Gove, C Lantz, O Vetter, M Merrifield (2012) Temperature related depth limits of warm-water corals. Proceedings of the 12th International Coral Reef Symposium

Kahng, SE, EJ Hochberg, AM Apprill, D Wagner, RR Bidigare (2012) Efficient light harvesting in deep-water, zooxanthellate corals. Marine Ecology Progress Series 455:65-77 (pdf file)

Kahng, SE, Y Benayahu, H Lasker (2011) Sexual reproduction in Octocorals. Marine Ecology Progress Series 443:265-283 (pdf file) (supplement info)

Kahng SE, Spalding H, Garcia R, Brokovich E, Wagner D, Weil E, Hinderstein L & Toonen RJ (2010). A review of community ecology of mesophotic coral reef ecosystems. Coral Reefs 29:255-275 (pdf file)

Concepcion, G, SE Kahng, M Crepeau, E Franklin, SL Coles, RJ Toonen (2010) Molecular data suggest multiple introductions of Carijoa riisei into the Hawaiian archipelago. Marine Ecology Progress Series 401:113-127 (pdf file) 

Chan Y, Pochon X, Fisher MA, Wagner D, Concepcion GT, Kahng SE, Toonen RJ, Gates RD (2009) Generalist dinoflagellate endosymbionts and host genotype diversity detected from mesophotic (67-100m depths) coral Leptoseris BMC Ecology 9:21

Wagner D, Kahng SE, Toonen RJ (2009). Observations on the life history and feeding ecology of a specialized nudibranch predator (Phyllodesmium poindimiei), with implications for biocontrol of an invasive octocoral (Carijoa riisei) in Hawaii. Journal of Experimental Marine Biology and Ecology 372: 64-74. (pdf file)

Kahng, SE, D Wagner, N Rothe, Y Benayahu (2008) Sexual reproduction in Carijoa riisei (Octocorallia: Clavulariidae) in Hawaii. Bulletin of Marine Science 82(1):1-17 (pdf file)

Concepcion GT, M Crepeau, D Wagner, SE Kahng, RJ Toonen (2008) An alternative to ITS, a hypervariable, single-copy nuclear intron in corals, and its use in detecting cryptic species within the octocoral genus Carijoa. Coral Reefs 27(2): 323-336

Kahng, SE & C Kelley (2007) Vertical zonation of habitat forming benthic species on the deep reef (60-150m) in the Au’au Channel, Hawaii. Coral Reefs 26(3):679-687. (pdf file)

Wagner, D, SE Kahng, RJ Toonen (2007) New report of predators (Order Nudibranchia) of the alien octocoral Carijoa riisei in the main Hawaiian Islands. Coral Reefs 26(2):411. (pdf file)

Kahng, SE & JE Maragos (2006) The deepest zooxanthellate, scleractinian corals in the world? Coral Reefs 25(2):254.(pdf file)

Kahng, SE & RW Grigg (2005) Impact of an alien octocoral (Carijoa riisei) on black corals in Hawaii. Coral Reefs 24(4):556-562. (pdf file)

Kahng, SE & A Salih (2005) Localization of fluorescent pigments in a nonbioluminescent, azooxanthellate octocoral suggests a photoprotective function. Coral Reefs 24(3):435-436. 

Public Outreach Articles:

Kahng, SE (2005) A silent invasion threatens to overrun pristine black coral beds and alter Hawaii’s deep reef community. NOAA National Centers for Coastal Ocean Science website

Kahng, SE (2005) Unwelcome invaders. Alien soft coral invades Hawaii coral reef community. 

Seminars, Conference Presentations & Abstracts:

2012   12th International Coral Reef Symposium, Cairns, Australia

2012   5th Hawaiian Islands Symposium, Honolulu, Hawaii

2011   ASLO Aquatic Sciences Meeting, San Juan, Puerto Rico

2008    NOAA Center for Sponsored Coastal Ocean Research (CSCOR) Mesophotic Coral Ecosystems Workshop

2008    11th International Coral Reef Symposium, Fort Lauderdale, Florida

2007    Louisiana State University, School of the Coast and Environment (invited speaker)

2006    Bishop Museum, Honolulu, Hawaii (invited speaker)

2006    Hawaii Conservation Conference, Honolulu, Hawaii

2006    ALSO/TOC Ocean Sciences Meeting, Honolulu, Hawaii

2005    3rd International Symposium on Deep-Sea Corals, Miami, Florida

2005    4th International Conference on Marine Bioinvasions, Wellington, New Zealand

2005    Hawaii Conservation Conference, Honolulu, Hawaii

2004    10th International Coral Reef Symposium, Okinawa, Japan

2004    Hawaii Conservation Conference, Honolulu, Hawaii

2004    13th International Aquatic Invasive Species Conference, Shannon, Ireland

2004    ALSO/TOC Ocean Sciences Meeting, Honolulu, Hawaii

Research Grants & Funding:

2012   Coral reef fishery science and management capacity building in the Western Pacific Region, NOAA Western Pacific Regional Fisheries Management Council, SE Kahng, $30,000

2012   Coastal ocean carbonate chemistry in the Northwestern Hawaiian Islands, NOAA Papahānaumokuākea Marine National Monument, SE Kahng, C Winn, $70,915

2011   Coastal ocean carbonate chemistry in the Northwestern Hawaiian Islands, NOAA Papahānaumokuākea Marine National Monument, SE Kahng, C Winn, $70,805

2011       Insular fisheries of the Western Pacific Region, NOAA Western Pacific Regional Fisheries Management Council, SE Kahng, $102,000

2011       Recolonization and community succession of deep-water coral communities in response to disturbance in the form of lava flows, NOAA Undersea Research Program Hawaii Undersea Research Laboratory & Coral Reef Conservation Program, SE Kahng, F Trusdell, RW Grigg, R Waller, M Garcia, D Wagner, J Maragos, $146,480

2010    Carbonate chemistry of near shore waters in the Northwestern Hawaiian Islands, NOAA Papahānaumokuākea Marine National Monument, SE Kahng, C Winn, $49,236

2010    Coral reef fishery science and management capacity building in the western Pacific region, NOAA Western Pacific Fisheries Management Council, SE Kahng, $12,320

2009    Carbonate chemistry of near shore waters in the Northwestern Hawaiian Islands, NOAA Papahānaumokuākea Marine National Monument, SE Kahng, C Winn, $9,000

2009    Stock assessment of the Kona crab fishery in Hawaii, NOAA Western Pacific Fisheries Management Council, SE Kahng, $48,231

2009    Ecological impacts of Carijoa riisei on black coral habitat, NOAA Western Pacific Fisheries Management Council, SE Kahng, RW Grigg, JR Smith, JC Wiltshire, $115,859

2006  Impact of Carijoa riisei on the deep reef, Sea Grant College Program, RW Grigg, SE Kahng, $9,356

2006  Ecological Impacts of Carijoa riisei on black coral habitat, Western Pacific Fisheries Management Council, RW Grigg, SE Kahng, $61,000

2005  Ecology of a specialized nudibranch predator (Phyllodesmium poindimiei) and implications for potential biocontrol of an invasive octocoral (Carijoa riisei) in Hawaii, Hawaii Invasive Species Council, RJ Toonen, SE Kahng, $52,018

2005  Ecology and management implications of an invasive soft coral species, Carijoa riisei in Hawaii, Hawaii Invasive Species Council, RJ Toonen, SE Kahng, $40,534

2005  Reproduction and developmental characteristics of an alien soft coral (Carijoa riisei) in Hawaii, Hawaii Coral Reef Initiative, RJ Toonen, Y Benayahu, SE Kahng, $71,898

2005  Aspects of Carijoa riisei ecology and photobiology, Sea Grant College Program, RW Grigg, SE Kahng, $5,883

2004  The ecology and ecological impact of a highly invasive marine invertebrate in Hawaii’s coral reef communities, NOAA Undersea Research Program Hawaii Undersea Research Laboratory & Coral Reef Conservation Program, RW Grigg, SE Kahng, RJ Toonen, $63,472

2004  The ecology and ecological impact of a highly invasive marine invertebrate in Hawaii’s coral reef communities, NOAA Undersea Research Program National Institute of Undersea Technology, RW Grigg, SE Kahng, RJ Toonen, $47,408

2004  Phylogeography and origin of a highly invasive alien octocoral Sea Grant College Program, RJ Toonen, RW Grigg, SL Coles, SE Kahng, $9,986

Science Expeditions:

Sept. 27 – Oct 1, 2011: Chief Scientist, Hawaii Undersea Research Laboratory (R/V Ka‘imikai-o-Kanaloa) Deep water coral surveys of the Big Island

Nov. 19-23, 2009: Chief Scientist, Hawaii Undersea Research Laboratory (R/V Ka‘imikai-o-Kanaloa) Deep water coral surveys of Maui and Kauai

Oct. 11 – Nov. 9, 2007: Scientific Diver, NOAA National Marine Fisheries Service Coral Reef Ecosystem Division (R/V Oscar Elton Sette) Northwestern Hawaiian Islands marine debris removal (Pearl & Hermes, French Frigate Shoals)

Jul. 18 – Aug. 13, 2007: Scientific Diver, NOAA National Marine Fisheries Service Coral Reef Ecosystem Division (R/V Oscar Elton Sette) Northwestern Hawaiian Islands marine debris removal (Kure, Pearl & Hermes, Laysan)

Oct. 21-27, 2006: Chief Scientist, Hawaii Undersea Research Laboratory (R/V Ka‘imikai-o-Kanaloa) Deep water coral survey of the Au’au Channel, Maui

Sept. 8-15, 2004: Chief Scientist, Hawaii Undersea Research Laboratory (R/V Ka‘imikai-o-Kanaloa) Deep water coral survey of Maui, Kauai, and Kaula

Dec. 12-14, 2003: Chief Scientist, Hawaii Undersea Research Laboratory (R/V Ka‘imikai-o-Kanaloa) Deep water coral survey of the Au’au Channel, Maui

Nov. 22-25, 2002: Technician, Hawaii Undersea Research Laboratory (R/V Ka‘imikai-o-Kanaloa) Deep water coral survey of South Point, Hawaii

Courses Taught:

MARS6002 Marine Systems II

MARS6020 Marine Science Field Methods

MARS6090 Biological Oceanography

MARS6120 Coral Reef Ecology

MARS6910 Current Topics in Marine Science – Biological Oceanography

MARS6910 Current Topics in Marine Science – Fisheries Management

NSCI3950 Natural Sciences Practicum

NSCI4800 Field Experience in Natural Sciences – Deep Water Coral Reef Exploration

NSCI6900 Master's Research

BIOL2050 General Biology I

BIOL2051 General Biology Laboratory I

BIOL2053 General Biology Laboratory II

BIOL3081 Ecology Laboratory

Volunteer Experience:

2002    United States Forest Service, Tongass National Forest, Alaska: Archaeological Survey

2002    Volunteers for Peace, Liaocheng, China: English Teacher

2002    Okavango Crocodile Project, Maun, Botswana: Nile Crocodile Population Study

2001    Virgin Islands Department of Planning & Natural Resources, Fish & Wildlife Division, St. Croix, USVI: Leatherback Turtle Conservation   

2001    Gerace Field Station, San Salvador, Bahamas: Coral Reef Monitoring

1999    ALNITAK Marine Environment Research & Education Center, Madrid, Spain: Cetacean Behavioral Study  

1999    Center for Whale Research, Friday Harbor, Washington: Orca Photo Identification Survey 

 

Profession Work Experience:

1999-2001 Principal, PricewaterhouseCoopers LLP

1991-1999 Manager, Andersen Consulting LLC

Black Coral photo by Sam Kahng