Selected Works

(This is only a small amount of the things I have been involved in over the years, I am constantly adding more of my past and present projects here.)


Science Writing


Walker, N.J.; Lee, L.; Rootes-Murdy, K.; Dolloff, C.; Prasad, V.; De Mutsert, K.; Aguirre, A.A. Stock assessment, prioritization of habitat, conservation priorities, and cultural significance of the American eel (Anguilla rostrata) in the Chesapeake Bay Watershed. In: FISH Magazine, Institute of Fisheries Management. August 2017. PDF


American Eels in the Potomac Watershed in National Capital Region Natural Resource Quarterly, Summer 2016. PDF

Paula T.A.R. & Walker N.J. (2013) Reproductive Morphology and Physiology of the Male Capybara. In: Moreira J., Ferraz K., Herrera E., Macdonald D. (eds) Capybara. Springer, New York, NY. Google Books.


Balarini, M.K.; Paula, T.A.R.; Matta, S.L.P.; Peixoto, J.V.; Guião-Leite, F.L.; Júnior, J.L.R.; Junior, A.C.C; Walker, N.J.Stages and duration of the cycle of the seminiferous epithelium in oncilla (Leopardus tigrinus), Schreber, 1775). Theriogenology 77. March 2012. PDF

SANTANA, M.; Giongo, P. ; Travenzoli, N. M. ; Walker, N. J. ; SAMPAIO, W. M. S. DIVERSIDADE CARIOTÍPICA DE PIRANHA VERMELHA (Pygocentrus nattereri) (CHARACIFORMES, CHARACIDAE), RIO SALOBO, BACIA DO ARAGUAIA, PARÁ, BRASIL. Evolução e Conservação da Biodiversidade, v. 2, p. 98-103, June 2011. PDF

Walker, N.J. Improving Stormwater Management Through Low Impact Development, Fall 2006; PDF

Presentations & Conference Proceedings

Walker, N.J. American eel conservation research overview and ArcGIS applications. George Mason University. Fairfax, VA. 10/17/2017. PDF

Walker, N.J. Stock assessment, conservation strategies and cultural impacts of the American eel (Anguilla rostrata) in the Chesapeake Bay watershed. Meeting of the Student Fisheries Society at North Carolina State University. October 3rd 2017.

Walker, N.J. An interdisciplinary approach to teaching environmental science to non-STEM majors. Innovations in Teaching & Learning Conference. September 22, 2017. George Mason University. Fairfax, VA. PDF

N.J. WALKER, K. DE MUTSERT, C.A. DOLLOFF, A.A. AGUIRRE. “Fish Passage and Conservation Prioritization for American eel (Anguilla rostrata) in Virginia and Maryland tributaries of the Chesapeake Bay Watershed” In: The Sixth International Conference on Agro-Geoinformatics at George Mason University. Fairfax VA. August 7 2017.

N.J. WALKER, K. DE MUTSERT, C.A. DOLLOFF, A.A. AGUIRRE. “Stock assessment and prioritization of habitat and passage of American eel (Anguilla rostrata) in the Chesapeake Bay Watershed.” In: 1st UK International Eel Science Symposium at the Zoological Society of London, London, UK. June 14 2017. Award for “Most Optimism in a Presentation”.

N.J. WALKER, P.M. GILLEVET, K. DE MUTSERT, C.A. DOLLOFF, A.A. AGUIRRE. “Fish Habitat Prioritization for American eel (Anguilla rostrata) in Virginia and Maryland tributaries of the Chesapeake Bay Watershed” In: 2017 Association of Mid-Atlantic Aquatic Biologists Workshop at Cacapon State Park Berkeley Springs, WV. March 31 2017. PDF

N.J. WALKER, P.M. GILLEVET, K. DE MUTSERT, C.A. DOLLOFF, A.A. AGUIRRE. “Prioritizing Fish Habitat for American eel (Anguilla rostrata) in the Chesapeake Bay Watershed” In: American Fisheries Society Southern Division 2017 Meeting of the Virginia and Virginia Tech Chapter at Lexington, VA. February 22 2017.

Walker, N.J. ArcGIS: Applications in research and work. George Mason University. Fairfax, VA. April 14th, 2016. PDF

Walker, N.J. & Dergam, J.A. Cytogenetic and Molecular Characterization of two Populations of Minnows Astyanax giton Eigenmann 1908 And Astyanax aff. fasciatus (Characiformes: Characidae) in the São Bartolomeu Creek, Minas Gerais State, Brazil. 2013 Association of Mid-Atlantic Aquatic Biologists meeting. April 2013. PDF.

Reis, V.J.C.; Walker, N.J.; Dergam, J.A. Description of the karyotype and the nucleolar organizer regions of Prochilodus vimboides Kner 1859, lake Curimbatá, (Prochilodontidae) of the Doce River Basin, Minas Gerais State Brazil, September 2012. 58° Congresso Brasileiro de Genética – Sociedade Brasileira de Genética. PDF

Walker, N.J. Science Writing Workshop at the Universidade Federal de Viçosa. Journal Editors of America LLC. December 2011. PDF

Vanner Boere; Alexandre de Oliveira Tavela; Bruno Edésio dos Santos Melo; Marcos Vinícius Rodrigues; Nicholas Walker;  Ita de Oliveira e Silva. O comportamento estereotipado em um casal de lobos-guará cativos está sincronizado aos dias da semana. In: XXIX Encontro de Etologia. Uberlândia, Minas Gerais State, Brazil. October 15th-16th, 2011. PDF

Walker, N.J.; Johnson, M.; Dergam, J.A. Principles of Scientific Photography. At: Departamento de Biologia Animal, Universidade Federal de Viçosa. April 19th-20th, 2011.

Walker, N.J.; Silva, P.C.; Silva, A.P.A.; Travenzoli, N.M.; Sanches, N.C.; da Cunha, M.S.; Santana, M.P.; Dergam, J.A. Região organizadora de nucléolos em Leporinus steindachneri  Eigenmann 1907 (Characiformes: Anostomidae) Lagoa Juiz de Fora, Bacia do Rio Doce, MG. In: III Conferência Latinoamerica sobre Cultivo de Peixes Nativos / III Congresso Brasileiro de Produção de Peixes Nativos. Lavras, Minas Gerais, Brasil. February 2011. PDF

Walker, N.J.; Silva, P.C.; Travenzoli, M.N.; Sanches, N.C.; Cunha, M.S.; Dergam, J.A.The Karyotype of Henochilus wheatlandii, Garman 1890 (Characidae, Bryconinae).  In: III Conferência Latinoamerica sobre Cultivo de Peixes Nativos / III Congresso Brasileiro de Produção de Peixes Nativos. Lavras, Minas Gerais, Brasil. February 2011. PDF Abstract.

Walker, N.J.; Silva, P.C.; Travenzoli, N.M.; Dergam, J.A. Karyoype of Leporinus steindachneri Eigenmann 1907 (Characiformes: Anostomidae). XIX Encontro Brasileiro de Ictiologia. Manaus, Amazonas, Brazil. January 2011. Abstract. PDF

Walker, N.J. Marcadores Molecular e Biologia de Conservação. BAN 704. Viçosa, Minas Gerais State, Brazil. 11/30/2017. PDF

Walker, N.J.; McCormick, M.; Wingfield, A.; Sweetman, S. Effective Citizenship–an Interdisciplinary Perspective. Association of American Colleges & Universities Bringing Theory to Practice Conference. Providence, Rhode Island. November 10th-12th, 2005. Conference Proceedings PDF

Walker, N.J., Pierce, J.T. Integrations: Liberal Learning in a Diverse World. Joint conference of the Association for Integrative Studies (AIS) and Association for General & Liberal Studies (AIGS). Fairfax, VA. October 6th-9th, 2005. (We created public relations content and helped organize this conference).

Public Relations

Mason Students Serve Virginia Communities in Summer Project, October 24, 2008
Staff Senate Taps Erek Perry for Outstanding Supervisor Award, October 22, 2008
Public Policy Professor Davidson Blazed Trail as Air Force Pilot, October 6, 2008; republished in Currents
Public Policy Graduate Students Win Bryce Harlow Awards, October 3, 2008
Dan Gieckel Named October Employee of the Month, October 1, 2008; republished on ituadmin.gmu.edu
Employee-Created Program for Seniors Wins State Award, September 19, 2008
Study Abroad Students Share Their Experiences, September 18, 2008
Provost Selects Fellow for Sustainability Curricula, September 3, 2008
Record Number of Mason Students, Alumni Win 2008 Fulbrights, August 25, 2008; republished in ICAR News, October 2008
University Life Helps Fund ‘The Patriot Express’, August 25, 2008
Virtual Computer Lab Makes Specialized Software Available Anytime, Anywhere, August 14, 2008
Comm Class Exercise Generates Soccer Balls for African Children, August 11, 2008
Global Affairs Student Wins Award at International Forum, July 31, 2008
Mason Pond Grove Honors Deceased; Marks Notable Occasions, July 29, 2008
Mason Clock a Landmark in More Ways Than One, July 18, 2008
California School Class Adopts Mason, July 17, 2008
Travels to France, Italy Keep Retired Robinson Professor Dumont Busy, July 11, 2008
Mason Launches New Rewards to Encourage Sustainability, July 10, 2008
On the Job: Grounds Supervisor Lets Landscape ‘Build Itself’, July 9, 2008
Karla Posselt Is July Employee of the Month, July 1st, 2008
Off the Clock: Connie Kirkland Follows Her Fancy to Africa, June 16, 2008
Mason Students Get Credit for Going to Camp, June 10, 2008
Student Representatives to Board of Visitors Selected, June 6, 2008
Jessica Montfort Is June Employee of the Month, June 2, 2008; republished on ITUadmin.gmu.edu
Who Was That? Buildings Named for Key Players in University’s History, May 30, 2008


Feature Stories

Bio Ritmo Band, Winter 2009. PDF

Salsa Fuego Dance Group, Fall 2009. PDF

Sin Miedo Band, Summer 2009. PDF

Eileen Torres: D.C.’s Salsa Ambassador, Summer 2009. PDF

Guns on Campus. December 11, 2008.

Students Excited About Southside Dining Options, October 6, 2008

Meet Mason’s Sustainability Heroes: David Brazer, July 2008. PDF


Student Government Members Discuss Involvement, November 17, 2008; print copy
On-Campus Nature Walk Identifies Invasive Species, April 23, 2008
Native Plants Garden to Upgrade for a Greener GMU, April 3, 2008
GMUEA: What is Happening Around You?, February 19, 2008


Journal Editors of America LLC


Packaging properties and control of Listeria monocytogenes in bologna by cellulosic films incorporated with pediocin. Brazilian Journal of Food Technology, July/Sept 2013. Epub Sept 2013.
Physical-mechanical and anti-microbial properties of nanocomposite films with pediocin and ZnO nanoparticles. Carbohydrate Polymers, 94(1), 199-208. Epub April 2013.
Optimized dispersion of ZnO nanoparticles and antimicrobial activity against foodborne pathogens and spoilage microorganisms. Journal of Nanoparticle Research, 15:1324. Epub January 2013.
Assessment of the efficiency of essential oils in the preservation of postharvest papaya in an antimicrobial packaging systemBrazilian Journal of Food Technology, 15(4), 333-342. Epub October 23, 2012.
The Unique Karyotype of Henochilus wheatlandii, a Critically Endangered Fish living in a Fast-Developing Region in Minas Gerais State, Brazil. PLoS One. Epub July 27 2012.
Zinc Oxide Nanoparticles: Synthesis, Antimicrobial Activity and Food Packaging Activities. Food and Bioprocess Technology, 5(5) 1447-1464. Epub July 1, 2012.

Plagioscion squamosissimus (Sciaenidae) and Parachromis managuensis (Cichlidae): A Threat to Native Fishes of the Doce River in Minas Gerais, Brazil. PLoS One. Epub June 13 2012.
Bioactive Peptides: Synthesis, Properties and Applications in the Packaging and Preservation of Food. Comprehensive Reviews in Food Science and Food Safety, 11(2) 187-204. Epub March 2012.

Citizenworks Biennial Report (Editor & Layout). CitizenWorks, Washington, D.C. Summer 2005. PDF

The Scene Magazine

Winter 2009 Spring 2009 Summer 2009 Fall 2009



2015-2016. Landscape inventory and planning for Park Fairfax Condominium Owners Association (286 units). Maps made using GIS data from the City of Alexandria. Contracted on behalf of JP Lange Consulting. (These images were created entirely with vectors and can be reproduced at any size; some were printed at 60″x40″ at 300 dpi — nearly a half a gigapixel of data!)

Walker, N.J. & Dergam, J.A. Dependência Humana de Biodiversidade.  Museu de Biodiversidade de Frutal, Minas Gerais State, Brazil. 2/2/2013. PDF

Walker, N.J. & Dergam, J.A. Diversidade de Peixes e Rios Neotropicais.  Museu de Biodiversidade de Frutal, Minas Gerais State, Brazil. 9/13/2012. PDF

Walker, N.J. The Impact of Climate Change on the Middle East and North Africa. 9/13/2006. (Minor updates and formatting 9/28/2017).

Walker, N.J. Brochure and flyer designed for Northern Virginia Soil & Water Conservation District Stormwater Marketing Program. Fall 2006.

Walker, N.J. Free speech interactive art exhibit at George Mason University. 12/1/2005. (First photo (C) DCJohn/Flickr). This project was covered in the 12/8/2005 edition of the Broadside.

Walker, N.J. Is the HIV virus weakening over time? An analysis of biology topics in the news. 11/1/2005 (minor updates and formatting 9/27/2017).

Walker, N. The emergent wetlands of Huntley Meadows11/18/2003 (minor updates and formatting 9/28/2017).

Walker, N. & Snyder, R. Uranus: Voyage to the Unknown. 10/25/2000. PDF (NB: Looking back, this must have been the day I discovered the gradient tool…)



October 2017 — Award for Outstanding Core Course at George Mason University (2x)
August 2017 — Recognition from Stearns Center “Thank-A-Teacher” Program
June 2017 — Most Optimism in a Presentation by the Sustainable Eel Group at the 1st Ever International Eel Symposium.
April 2017 — Award for Outstanding Core Course at George Mason University.
Summer 2016 — Provost Research Fellowship at George Mason University.
2013 — Presidential Award Scholarship at George Mason University.
2010 — Research Award through CAPES at the Federal University of Viçosa.
2005 — Elizabeth Gunn Writing Award at George Mason University.
2004 — President’s Call to Service Award (lifetime achievement).
2004 — Governor’s Service Award.

May 29th, 2003 — Third Street Community Center Letter of Appreciation. PDF
February 2002 — Employee Recognition Award, United Parcel Service.
2000 — UCM Community Solutions Volunteer of the Year Award.