Brian K. Walker

Research Scientist
Department of Marine and Environmental Sciences
(954) 262-3675
walkerb@nova.edu

Education

Area(s) of Research

Current Graduate Students

News

Disease and Bleaching

The biggest coral reef in the continental U.S. is dissolving into the ocean.”, Washington Post, May 4, 2016

Globally Warming Oceans Are Killing Coral Reefs.” Cleanenergy.org, October 27, 2015

Bleaching and disease are devastating the biggest coral reef in the continental U.S.” Washington Post, October 26,2015

South Florida corals dying from 'unprecedented' bleaching and disease.” Sun Sentinel, April 24, 2016

Our Florida Reefs

Protecting reefs: Proposals would affect boaters, grocery shoppers.” Sun Sentinel, January 22, 2016

DEP PARTNERS WITH NOVA SOUTHEASTERN TO LEARN HOW CORAL REEFS ARE BEING USED.” Florida Department of Environmental Protection, November 26, 2014

Good dolphin catches deep and also shallow.” Sun Sentinel, September 30, 2014

Staghorn Coral

Forests of rare coral discovered off South Florida.” Sun Sentinel, January 2, 2015

Florida's staghorn coral makes surprising return.” Los Angeles Times, January 19, 2015

Study of threatened coral reefs underway.” Science Daily, December 12, 2014

Billfish Tournament Yields Fun & Research.” Marine Industries Association, January 15, 2015

Rare staghorn coral forests found off South Florida coast.” Advanced Aquarist, January 6, 2015

Nearly 40 Acres of Federally Threatened Staghorn Coral Recently Mapped in Southeast Florida.” DEP News, December 23, 2014

Costa B, Walker BK, Dijkstra J. In press. “Spatial patterning in the sea: Mapping and quantifying seascape patterns.” Seascape Ecology: Taking landscape ecology into the sea. Pittman SJ ed. Chapter 3.

D’Antonio N, Walker BK, Gilliam DS. In press. “"Investigating the spatial distribution and effects of nearshore topography on Acropora cervicornis abundance in Southeast Florida.” Peer J

Berry C, Hill RL, Walker BK. 2016. Demographics of a nearshore mating queen conch (Lobatus gigas) aggregation on the southeast Florida Reef Tract. Bull Mar Sci 92(1):59-73.

Larson E.A., Gilliam D.S., Lόpez Padierna M., Walker B.K. 2014. “Possible recovery of Acropora palmata (Scleractinia:Acroporidae) within the Veracruz Reef System, Gulf of Mexico: a survey of 24 reefs to assess the benthic communities.” Rev Biol Trop 62 (Suppl. 3): 75-84.

Walker B.K. & Gilliam D.S. 2013. Determining the Extent and Characterizing Coral Reef Habitats of the Northern Latitudes of the Florida Reef Tract (Martin County). PLoS ONE, 8(11), e80439.

Walker B.K., Larson E.A., Moulding A., and Gilliam, D.S.. 2012. Small-scale mapping of arborescent acroporid coral ( Acropora cervicornis) patches. Coral Reefs:31:885-894. View entire paper.

Walker B.K. (2012). Spatial Analyses of Benthic Habitats to Define Coral Reef Ecosystem Regions and Potential Biogeographic Boundaries Along a Latitudinal Gradient. PLoS One 7:e30466. View entire paper.

Reed, J.K., C. Messing, B. Walker, S. Brooke, T. Correa, M. Brouwer and T. Udouj. 2011 (in press). Habitat characterization, distribution, and areal extent of deep-sea coral ecosystem habitat off Florida, Southeastern United States. Journal of Caribbean Science. View entire paper.

Jordan L.K.B., Banks K.W., Fisher L.E., Walker B.K., and Gilliam D.S. 2009. Elevated sedimentation on coral reefs adjacent to a beach nourishment project. Marine Pollution Bulletin, (60) 261-271. View entire paper.

Walker B. K.. 2009. A Model Framework for Predicting Reef Fish Distributions across the Seascape Using GIS Topographic Metrics and Benthic Habitat Associations. Proceedings of the 11th International Coral Reef Symposium, Ft. Lauderdale, Florida, 7-11 July 2008, pp 657-661. View entire paper.

Gilliam D.S., Walker B.K., Saelens S.J., Fahy D.P., and Kosmynin V.N. 2009. Recovery of injured giant barrel sponges, Xestospongia muta, offshore southeast Florida. Proceedings of the 11th International Coral Reef Symposium, Ft. Lauderdale, Florida, 7-11 July 2008, pp. 1230-1234. View entire paper.

Fisher L., Banks K., Gilliam D., Dodge R. E., Stout D., Vargas-Angel B., and Walker B. K. 2009. Real-time coral stress observations before, during, and after beach nourishment dredging offshore southeast Florida. Proceedings of the 11th International Coral Reef Symposium, Ft. Lauderdale, Florida, 7-11 July 2008, pp. 34-37. View entire paper.

Walker B.K., Jordan L.K.B., and Spieler R.S. 2009. Relationship of fish assemblages and topographic complexity on southeastern Florida coral reef habitats. Journal of Coastal Research, SI (53) 39-48. View entire paper

Foster G., Walker B.K., Riegl B.M. 2009. Interpretation of single-beam acoustic backscatter using lidar-derived topographic complexity and benthic habitat classifications in a coral reef environment. Journal of Coastal Research, SI (53) 16-26. View entire paper.

Walker B.K., Riegl B.M., and R.E. Dodge. 2008. Mapping Coral Reef Habitats in Southeast Florida Using a Combined Technique Approach. Journal of Coastal Research, 24(5), 1138-1150. View entire paper.

Collier C., Ruzicka R., Banks K., Barbieri L., Beal B., Bingham D., Bohnsack J., Brooke S., Craig N., Dodge R., Fisher L., Gadbois N., Gilliam D., Gregg L., Kellison T., Kosmynin V., Lapointe B., McDevitt E., Phipps J., Poulos N., Proni J., Quinn P., Riegl B., Spieler R., Walczak J., Walker B. and Warrick D. 2008. "The State of Coral Reef Ecosystems of Southeast Florida." In: J.E. Waddell and A.M. Clarke (eds.), The State of Coral Reef Ecosystems of the United States and Pacific Freely Associated States: 2008. NOAA Technical Memorandum NOS NCCOS 73. NOAA/NCCOS Center for Coastal Monitoring and Assessment's Biogeography Team. Silver Spring, MD. 569 pp. View entire paper.

Banks K.W., Riegl B.M., Richards V.P., Walker B.K., Helmle K.P., Jordan L.K.B., Phipps J., Shivji M.S., Spieler R.E., and Dodge R.E.. 2008. "The reef tract of continental southeast Florida (Miami-Dade, Broward, and Palm Beach Counties, USA)." In Coral Reefs of the USA (Eds. Riegl B.M. and Dodge R.E.), pp. 175-220, Springer.

Rangel Avalos M.A., Jordan L.K.B., Walker B.K., Gilliam D.S., Carvajal Hinojosa E., and Spieler R.E. (2008). "Fish and Coral Reef Communities of the Parque Nacional Sistema Arrecifal Veracruzano (Veracruz Coral Reef System National Park) Veracruz, Mexico: Preliminary Results." Proceedings of the 60th Annual Gulf and Caribbean Fisheries Institute Meeting, Punta Cana, Dominican Republic: 60,427-435. View entire paper.

Riegl B., Moyer R.P., Walker B.K., Kohler K., Gilliam D., and Dodge R.E.. 2008. A tale of germs, storms, and bombs: geomorphology and coral assemblage structure at Vieques (Puerto Rico) compared to St. Croix (U.S. Virgin Islands). Journal of Coastal Research, 24(4), 1008-1021. View entire paper.

Walker B.K. 2008. A Seascape Approach to Predicting Reef Fish Distribution. PhD dissertation. Nova Southeastern University, Davie, Florida.

Walker B.K. and R.E. Dodge. "3D Visualization of Coral Reef Habitat." Proceedings to: Seventh International Conference on Remote Sensing for Marine and Coastal Environments, 20-22 May 2002, Miami, Florida, USA. View entire paper.

Moyer R.P., B. Riegl, R.E. Dodge, B.K. Walker, and D.S. Gilliam. "Acoustic Remote-Sensing of Reef Benthos in Broward County, Florida (USA)." Proceedings to: Seventh International Conference on Remote Sensing for Marine and Coastal Environments, 20-22 May 2002, Miami, Florida, USA. View entire paper.

Riegl B., R.P. Moyer, and B.K. Walker. "Integration of satellite remote-sensing of subtidal habitats with vessel-based video survey (Dubai, UAE, Arabian Gulf)" Proceedings to: Seventh International Conference on Remote Sensing for Marine and Coastal Environments, 20-22 May 2002, Miami, Florida, USA.

Walker B.K., Henderson B., and R.S. Spieler. "Biological Assessment of Artificial Reef Materials: Concrete Aggregates and Quarry Stone." Aquatic Living Resources 15: (2002) 95-105.

Walker B.K. Pictorial for "Visions in Sonar." Underwater Magazine. Association of Diving Contractors International. Nov-Dec 2001. p. 62.

Walker B.K. "NCRI 3-D Visualization of Coral Reef Habitat" Currents: Nova Southeastern University Halmos College of Natural Sciences and Oceanography Circulation. Vol. 15, No. 4, p.4 Fall 2001.

Walker B.K. and R.L. Sherman. "Gross brain morphology in the Yellow Stingray, Urobatis jamaicensis." Florida Scientist. Vol. 64, No. 4, Pp.246-249, 2001.

Walker, B. K., & Klug, K. 2015. Southeast Florida Large Coral Assessment 2015. Miami Beach, FL: Florida DEP Coral Reef Conservation Program report. 151.

Walker B, Costaregni A (2015) Our Florida Reefs (OFR) Survey Outreach Efforts. For the Florida Department of Environmental Protection Coral Reef Conservation Program, Miami, FL 29

Walker B, Costaregni A (2014) Data Gathering and Technical Support for the Southeast Florida Coral Reef Initiative (SEFCRI) Our Florida Reefs (OFR) Decision Support Tool. For the Florida Department of Environmental Protection Coral Reef Conservation Program, Miami, FL 34

Kilfoyle K, Walker B, Smith S, Spieler R (2014) Coral Reef Conservation Program (CRCP) Local Action Strategy (LAS) Project 3B “Southeast Florida Coral Reef Fishery-Independent Baseline Assessment” 2012-2013 Interim Report. Florida Department of Environmental Protection 94.

Gilliam D, Walker B (2014) Broward County Port Everglades Proposed Sand Bypass Project: Benthic Resource Impact Summary. Under contract to Olsen Associates, Inc. and Coastal Eco-Group, Inc. for Broward County Natural Resources Planning and Management Division, Fort Lauderdale, FL 25.

Walker, B.K. and Klug, K. (2014). Southeast Florida shallow-water coral reef community baseline habitat mapping and characterization of mapped communities. Florida DEP Coral Reef Conservation Program report. Miami Beach, FL. Pp. 84.

Walker, B. K., Rodericks, I., & Costaregni, A. R. (2013). Accuracy Assessment of the NOAA Florida Keys Benthic Habitat Maps: ROIs 1 – 4 combined (pp. 56). Silver Spring, MD: Prepared for the Office of National Marine Sanctuaries NOS/NOAA.

Walker, B.K., & Costaregni, A. (2013). FDOU Project 23 Part3 Task 4: Our Florida Reef Community Meeting Tool Demonstration and Public Response Summary. (pp. 6). Miami, FL: FDEP CRCP.

Walker, B.K., & Costaregni, A. (2013). Assessment of Spatial Analysis Tools in Support of the Southeast Florida Coral Reef Initiative (SEFCRI) Management Options Identification Process (MOIP). (pp. 14). Miami, FL: FDEP CRCP.

Walker, B. K., Rodericks, I., & Costaregni, A. R. (2013). Accuracy Assessment for the Reclassification of the NOAA Florida Keys mapping: ROI 1 & 2 (pp. 42). Silver Spring, MD: Prepared for the Office of National Marine Sanctuaries NOS/NOAA.

Walker, B.K. 2012. Draft Final Report: Characterizing and Determining the Extent of Coral Reefs and Associated Resources in Southeast Florida through the Acquisition of High-Resolution Bathymetry and Benthic Habitat Mapping. Florida Fish and Wildlife Conservation Commission, Agreement No. 08014:41.

Walker, B.K. and G. Rowlands. 2012. Measuring the light and reflectance of seafloor habitat features in the Marquesas with an underwater spectrometer. National Fish and Wildlife Foundation for NOAA:41.

Messing, C.G. Walker, B.K., Reed, J.K. 2012. Deep-Water. Benthic Habitat Characterization and Cable Impact Assessment for the South Florida Ocean Measurement Facility (SFOMF). West Bethesda, MD, Prepared for Commander Naval Surface Warfare Center, Carderock Division:130

Gilliam, D.S., and B.K. Walker. 2012. Shallow-water Benthic Habitat Characterization and Cable/Benthic Activity Impact Assessment for the South Florida Ocean Measurement Facility (SFOMF). West Bethesda, MD, Prepared for Commander Naval Surface Warfare Center, Carderock Division:75.

Vinick, C., Riccobono, A. Messing, C.G., Walker, B.K., Reed, J.K. and Rogers, S. 2012. Siting study for a Hydrokinetic Energy Project Located Offshore Southeastern Florida: Protocols for Survey Methodology for Offshore Marine Hydrokinetic Energy Projects. Final Report Submitted to United States Department of Energy, Golden Field Office, [DOE Grant Award Number: DEEE0002655] By Dehlsen Associates, LLC in Cooperation with Ecology & Environment, In., Nova Southeastern University Halmos College of Natural Sciences and Oceanography, and Florida Atlantic University (Southeast National Marine Renewable Energy Center/Harbor Branch Oceanographic Institute), II +93 pp. View entire paper.

Walker, B. K. 2010. A Study to Minimize or Eliminate Hard Bottom and Reef Impacts from Anchoring Activities in Designated Anchorages at the Ports of Miami and Palm Beach. Florida DEP report #RM083. Miami Beach, FL. Pp. 59. View entire paper.

Walker, B.K. and J.G. Foster. 2010. "Accuracy Assessment and Monitoring for NOAA Florida Keys mapping AA ROI 2 (Key West)." Prepared for Office of National Marine Sanctuaries NOS/NOAA. Pp. 43. View entire paper.

Walker, B.K. and J.G. Foster. 2009. "Accuracy Assessment and Monitoring for NOAA Florida Keys mapping AA ROI-1 (Hawk Channel near American Shoal)." Prepared for Office of National Marine Sanctuaries NOS/NOAA. Pp. 32. View entire paper.

Walker, B.K. 2009. "Benthic Habitat Mapping of Miami-Dade County: Visual Interpretation of LADS Bathymetry and Aerial Photography." Florida DEP report #RM069. Miami Beach, FL. Pp. 47. View entire paper.

Gilliam D.S., Walker, B.K., and R.S. Spieler. 2008. "Broward County Port Everglades Sand Bypass Project: Benthic Habitat Mapping and Assessment." Prepared for Olsen Associates, Inc. April 2008. Pp.60.

Riegl B, B.K. Walker, J.G. Foster and K. Foster. 2007. "Development of GIS Maps for Southeast Florida Coral Reefs." Technical report submitted to FDEP-CRCP March 2007 under FDEP Agreement No. G0099; NOAA Award NA03NOS4190209. View entire paper.

Messing C.S., B.K. Walker, R.E. Dodge, and J Reed. "Calypso U.S. Pipeline, LLC, Mile Post 31 - 0 Deep-water Marine Benthic Video Survey." Technical Report submitted to Calypso U.S. Pipeline LLC, June 2006.

Messing C.S., B.K. Walker, R.E. Dodge, J Reed, and S.D. Brooke. "Calypso LNG Deepwater Port Project, Florida Marine Benthic Video Survey" Technical Report submitted to Ecology and Environment, Inc. & SUEZ Energy North America, Inc, June 2006.

Gilliam D.S. and B.K. Walker. "EMERALD BAY MARINA NAVIGATIONAL SAFETY PROJECT GREAT BAHAMA ISLAND HABITAT SURVEY REPORT" Technical Report submitted to Coastal System International, Inc. July 2006.

Riegl B. and B.K. Walker. "Development of GIS Maps for Southeast Florida Coral Reefs." Technical report submitted to FWC-FWRI January 2005. View entire paper.

Messing C.S., D.S. Gilliam, B.K. Walker, R.P. Moyer and R.E. Dodge. "Tractebel Bahamas LNG Project Marine Survey Final Report" Technical Report submitted to Ecology and Environment, Inc. September 2003.

Messing C.S., D.S. Gilliam, B.K. Walker, R.P. Moyer and R.E. Dodge. "Deep-water Biological Habitat Survey Report for the Tractebel Calypso Natural gas Pipeline Extension of Existing Survey to 200m Depth." Technical Report submitted to URS Corporation, May 2003.

Gilliam D.S., B.K. Walker, G. McIntosh and R.E. Dodge. "Lagniappe II Restoration and Baseline Monitoring Report." Technical Report submitted to Florida Keys National Marine Sanctuary. October 2002.

Gilliam D.S., B. Riegl, B.K. Walker, L.K.B. Jordan, K.J.P. Deslarzes, G. McIntosh and R.E. Dodge "Reef ecosystem baseline assessment survey and monitoring Vieques Island, Naval Station Roosevelt Roads, PR." Atlantic Division Naval Facilities Engineering Command Technical Draft Report Prepared by Geo-Marine, Inc. & National Coral Reef Institute. August 2002.

Walker, B.K., Henderson, B., Spieler, R.E., 2002. Fish assemblages associated with artificial reefs of concrete aggregates or quarry stone offshore Miami Beach, Florida, USA. Aquat Living Resour 15, 95-105. View entire paper.

Florida Department of Environmental Protection Agency Coral Reef Conservation Program. 2009. Southeast Florida Coral Reef Initiative map illustrations. Project 32 - Coral Reef Education signs at boat ramps. [URL: http://www.dep.state.fl.us/coastal/programs/coral/reports/AA/Project32.pdf]

PBS&J. 2008. "Best Management Practices (BMPs) for Construction, Dredge and Fill and Other Activities Adjacent to Coral Reefs." Southeast Florida Coral Reef Initiative Maritime Industry and Coastal Construction Impacts Focus Team Local Action Strategy Project # 6; Florida Department of Environmental Protection Coral Reef Conservation Program. Contract RM6011.

Calypso U.S. Pipeline, LLC Port Everglades Offshore Anchorage Feasibility Study. MNI No. 5905, Jan 2007. Pp. 120.

Jaap WC, Hudson JH, Dodge RE, Gilliam DS, and R Shaul. 2006. "Coral Reef Restoration with Case Studies from Florida." In Coral Reef Conservation, Cote IM and JD Reynolds (eds.), Cambridge University Press, New York.

Arena PT, LKB Jordan, and RE Spieler. 2007. "Fish assemblages on sunken vessels and natural reefs in southeast Florida, USA." Hydrobiologia, v.580, pp. 157-171.

Ferro F, LKB Jordan, and RE Spieler. 2005. "The Marine Fishes of Broward County Florida: Final Report of 1998-2002 Survey Results." NOAA Technical Memorandum. NMFS-SEFSC-532. 73p.

Andrews K, Nall L, Jeffrey C, and S Pittman. 2005. The State of Coral Reef Ecosystems of Florida. Pp. 150-200. In: J. Waddell (ed.), The State of Coral Reef Ecosystems of the United States and Pacific Freely Associated States: 2005. NOAA Technical Memorandum NOS NCCOS 11. NOAA/NCCOS Center for Coastal Monitoring and Assessment's Biogeography Team. Silver Springs, MD. 522 pp.

Baron R.M., LKB Jordan, and RS Spieler. 2004. "Characterization of the marine fish assemblage associated with the nearshore hardbottom of Broward County, Florida, USA" Estuarine, Coastal and Shelf Science, Vol. 60., Pp. 431-443.

Vargas-Angel B., Thomas J.D., and M. Hoke. 2003 "High-latitude Acropora Cervicornis Thickets off Fort Lauderdale, Florida, USA" Coral Reefs: Vol. 22, Pp. 465-473.

Schmitt E.F., R.D. Sluka, and K.M. Sullivan-Sealey. "Evaluating the use of roving diver and transect surveys to assess the coral reef fish assemblage off southeastern Hispaniola" Coral Reefs: Vol. 21, Part 2, Pp. 216, 2002.

John U. Lloyd Beach State Park Handout. "Coral Reefs". 2002. View entire paper.