Jorge A. Leiva Ph.D. in Soil and Water Sciences
University of Florida Soil and Water Sciences Department Env. Soil Physics Lab. Env. Chemistry and Toxicology Lab. 2181 McCarty Hall PO Box 110290 Gainesville, FL 32611 [email protected] +1(352)359-8165
EDUCATION
Ph.D. Soil & Water Sciences, 2014 University of Florida, Gainesville, FL Research: Environmental Soil Physics; Environmental Fate and Transport of Organic Contaminants (Soils, Water, and Crops).
M.Sc. Agricultural Sciences and Natural Resources, 2007 University of Costa Rica, San José Research: Environmental Pedology, Tropical Dry Forest Succession in the Pacific Northwest of Costa Rica.
B.Sc. Forestry Engineering, 2002 Technological Institute of Costa Rica, Cartago Research: Restoration, Forest Ecology, Succession Lowland Tropical Rain Forest in Costa Rica Caribbean Basin.
RESEARCH AND TEACHING
Postdoctoral Research Associate, 2014-2017 University of Florida, Institute of Food and Agricultural Sciences (UF-IFAS) Soil and Water Science Department (SWS), Gainesville, FL.
Research: Environmental Soil Physics; Fate and Transport of Organic Contaminants in Agricultural Soils and Waters; Solvophobic Interactions of Organic Contaminants in Aqueous-Organic Solvent Mixtures; Analysis of naturally-occurring off-flavor compounds in soils and waters; Pesticides retention in ornamental production growing media; Analytical
method development and validation for organic compounds in soils, fresh and salt-water, and plant matrixes by HPLC-UV, HPLC-MS, GC-ECD, GC-MS.
Teaching: Assistant Lecturer for SWS course in Environmental Soil Physics (SWS-5605C); Teaching Assistant for SWS course in Agriculture and Environmental Quality (ALS-3133).
Graduate Researcher and Teaching Assistant, 2010-2014 UF-IFAS Soil and Water Science Department, Graduate student of Environmental Soil Physics.
Research: Neonicotinoids (Imidacloprid) Fate and Transport in Soil, Water, and Plant during Control of the Asian Citrus Psyllid in Southwest Florida Flatwoods. Analytical method development and validation for the analysis of organic contaminants in soil, water, and plant matrixes by HPLC-UV, and HPLC-MS/MS.
Teaching: Assistant Lecturer for SWS course in Environmental Soil Physics (SWS-5605C); Teaching Assistant for SWS course in Agriculture and Environmental Quality (ALS-3133).
Associate Professor, 2007-2010 • University of Costa Rica (UCR), College of AgriFood Sciences, Agronomy Department • Costa Rica Institute of Technology (ITCR), Forest Engineering Department
Teaching: Assistant Lecturer in Agroforestry (UCR-AF-5209), Agronomy Seminar (UCR- AF-5413), Soil Genesis and Classification (UCR-AF-4606), and Forest Soils and Management (ITCR-FO-2107).
Research: (2008-2009) Community-Based Pest Management in Central American Agriculture. Technical Support Team for Costa Rica. Project website: http://www.umanitoba.ca/afs/centralamerica_cbpm/home_en.htm
Laboratory/Field Experience: (2007-2010) Center of Agronomical Research, University of Costa Rica. > 3000 soil physical analyses (texture, bulk density, particle density, hydraulic conductivity, soil moisture retention curves, and soil penetration resistance). Soil surveys in Costa Rica, Panama (Azuero), and Belize (Northeastern). Soil orders analysed and classified (USDA Soil Taxonomy): Andisols, Alfisols, Entisols, Inceptisols, Oxysols, Ultisols, and Vertisols.
PUBLICATIONS (ENGLISH)
Derroire, G.; Balvanera, P.; Castellanos-Castro, C.; Decocq, G.; Kennard, D.K.; Lebrija-Trejos, E.; Leiva, J.A.; Oden, P.C.; Powers, J.S.; Rico-Gray, V.; Tigabu, M.; Healey, J.R. 2016. Resilience of tropical dry forests – a meta-analysis of changes in species diversity and composition during secondary succession. Oikos DOI: 10.1111/oik.03229
Kadyampakeni, D.; Nkedi-Kizza, P.; Leiva, J.A., Muwamba, A., Fletcher, E.V. & K.T. Morgan. 2017. (In review) Ammonium and Nitrate Transport During Saturated and Unsaturated Flow through Sandy Soils. Agricultural Water Management (Elsevier). Leiva, J.A.; Nkedi-Kizza, P.; Borejsza-Wysocki, W.S.; Bauder, V.S.; Morgan, K.T. 2016. Imidacloprid extraction from citrus leaves and analysis by liquid chromatography-mass spectrometry (HPLC-MS/MS). Bull. Environ. Contam. Toxicol. DOI: 10.1007/s00128- 016-1769-8 Leiva, J.A., Nkedi-Kizza, P., Morgan, K.T.; Qureshi, J.A. 2015. Imidacloprid sorption kinetics, equilibria, and degradation in sandy soils of Florida. J. Agric. Food Chem. 63:4915-4921 Leiva J.A. 2014. Imidacloprid fate and transport in Florida flatwoods soils and plants during control of the Asian Citrus Psyllid. Dissertation, University of Florida, Gainesville. Leiva, J.A., Nkedi-Kizza, P., Morgan, K.T.; Kadyampakeni, D. 2017. Imidacloprid transport and sorption nonequilibrium in single and multilayered columns of Immokalee fine sand. PLoS ONE 12(8):e0183767. https://doi.org/10.1371/journal.pone.0183767 Leiva et al. 2017. (In prep.) Imidacloprid field leaching in flatwoods soils of SW Florida during control of the asian citrus psyllid. J. Environ. Qual. (Soil Science Society of America) Leiva et al. 2017. (In prep.) Imidacloprid in plant and soil during control of the Asian Citrus Psyllid (Diaphorina citri Kuwayama) in SW Florida. PLOS One
(SPANISH)
Alvarado, A. & J.A. Leiva. Nutrición y fertilización de Swietenia macrophylla. In: Alvarado, A. & J. Raigosa. 2012. Nutrición y Fertilización Forestal en Regiones Tropicales. San José, Costa Rica. ACCS. p. 307-316. Leiva, J.A. 2001. Comparación de las estrategias de regeneración natural entre los bosques primarios y secundarios en las zonas bajas del atlántico costarricense, Estación Biológica La Selva, Puerto Viejo de Sarapiquí, Heredia. B.S. Tesis, Escuela de Ingeniería Forestal, ITCR. Leiva, J.A. 2007. Regeneración arbórea y características edáficas en bosques secos tropicales desarrollados sobre la meseta ignimbrítica de Santa Rosa, noroeste de Costa Rica. M.S. Tesis, Facultad de Ciencias Agroalimentarias, UCR. Leiva, J.A. & R. Mata. 2007. Suelos de la meseta ignimbrítica de Santa Rosa: génesis, clasificación y fertilidad, bajo regeneración de bosques secos tropicales en Guanacaste, Costa Rica. V Congreso Nacional de Suelos, INBio Parque, ACCS. Leiva, J.A.; Mata, R.; Rocha, O.J. & M.V. Gutiérrez. 2009. Cronología de la regeneración del bosque tropical seco en Santa Rosa, Guanacaste, Costa Rica. I. Características edáficas. Rev. Biol. Trop. 57(3):801-815. Leiva, J.A.; Mata, R.; Rocha, O.J. & M.V. Gutiérrez. 2009. Cronología de la regeneración del bosque tropical seco en Santa Rosa, Guanacaste, Costa Rica. II. La vegetación en relación con el suelo. Rev. Biol. Trop. 57(3):817-836.
Raigosa, J.; Alvarado, A. & J.A. Leiva. Nutrición y fertilización de Calophyllum brasiliense. In: Alvarado, A. & J. Raigosa. 2012. Nutrición y Fertilización Forestal en Regiones Tropicales. San José, Costa Rica. ACCS. p. 207-212.
PRESENTATIONS AND WORKSHOPS
Leiva, J.A., Fábrega, J.R. 2017. Science & Technology Workshop on Tropical Soils in Water Catchments of National Importance: Genesis, Properties, Ecosystem Services. September 18-22, 2017. (Funding provided by Panama Government Science and Technology Office or SENACYT) Centro de Investigaciones Hidráulicas e Hidrotécnicas, Universidad Tecnológica de Panamá. Leiva, J.A., Danmowa, N.M.; Nkedi-Kizza, P.; Morgan, K.T. & J. Jawitz. 2016. Pesticides Sorption Kinetics, Equilibria, and Column Transport using Fertilizer Mixtures Applied to Soils from Florida and Nigeria. ASA-CSSA-SSSA International Annual Meetings (183- 400), Nov. 6-9, Phoenix, Arizona, USA. Danmowa, N.M.; Nkedi-Kizza, P.; J. Jawitz; Morgan, K.T.; Harris, W.; Nair, V.D.; MacDonald, G. & J.A. Leiva. 2016. Sorption and Transport of Phosphorus and Nitrogen in a Mixture of Fertilizers and Pesticides. ASA-CSSA-SSSA International Annual Meetings (467- 316), Nov. 6-9, Phoenix, Arizona, USA. Leiva, J.A., Nkedi-Kizza, P., Morgan, K.T.; Qureshi, J.A & T.A. Obreza. 2013. Imidacloprid fate and transport in Florida flatwoods soils during control of Asian Citrus Psyllid. ASA- CSSA-SSSA International Annual Meetings (418-1), Nov. 3-6, Tampa, Florida, USA. Leiva, J.A., Nkedi-Kizza, P., Morgan, K.T.; Qureshi, J.A & T.A. Obreza. 2013. Imidacloprid fate and transport in Florida flatwoods soils during control of Asian Citrus Psyllid. ASA- CSSA-SSSA International Annual Meetings (290-11), Nov. 3-6, Tampa, Florida, USA.
GRANTS & PROJECTS
2016-2017 / $10,000 (awarded by SENACYT-Panama) / Instructor / Science & Technology Workshop on Tropical Soils in Water Catchments of National Importance: Genesis, Properties, Ecosystem Services (Taller científico tecnológico sobre suelos tropicales en cuencas hidrográficas de importancia nacional: génesis, propiedades y servicios ecosistémicos). Universidad Tecnológica de Panamá, Ciudad de Panamá. Centro de Investigaciones Hidráulicas e Hidrotécnicas.
2016-2017 / $30,000 (awarded) / Co-PI. Pesticides Retention in Ornamental Production and Growing Media. USDA-ARS-SCRI Project “Clean Water3”. Environmental Chemistry and Toxicology Lab, Soil and Water Sciences Department, University of Florida.
2015 / $250,000 (not awarded) / Co-PI. Amendment of Sandy Soils of Florida with Biochar to Optimize Root Zone Nutrients (N-P-K) and Pesticide Retention, Uptake, and Control of Asian Citrus Psyllid (ACP). Soil and Water Sciences Department, University of Florida.
2014 / $5,000 (awarded) / Co-PI. Solvophobic interactions of Imidacloprid, Atrazine, Diuron in aqueous-organic solvent mixtures in organic and mineral soils of Florida. Soil and Water Sciences Department, University of Florida.
AWARDS
2013: Best Graduate Student Poster, ASA-CSSA-SSSA International Annual Meetings Tampa, Florida, Nov. 3-6. Division of Soil and Environmental Quality, Graduate Student Competition. Prize: $200 2013: Best Poster Presentation, UF Soil and Water Science Department 14th Annual Research Forum. Prize: $500 2012: Best Oral Presentation, UF Soil and Water Science Department 13th Annual Research Forum. Prize: $500. The Honor Society of Agriculture Gamma Sigma Delta Certificate of Membership in recognition of high scholarship, outstanding achievement or service. 2011: University of Florida International Center. Certificate of Outstanding Achievement for maintaining a GPA of 4.0. 2010: Fulbright-LASPAU Scholarship for Young Academic Professionals in Latin America. Awarded by United States of America, Department of State, and the Institute of International Education (IIE). $150,000 2007: Honorific Mention at M.Sc. degree final oral thesis presentation and commencement ceremony at the University of Costa Rica, San Jose.
OTHER SKILLS AND TRAINING
Languages: 1st language: Spanish. 2nd language: English (TOEFLT-IBT 2010 Score: 101. GRE- CAT 2010 Score: 500 Verbal, 720 Quantitative, 4.0 Analytical Writing). Laboratory and Analytical Equipment Environmental Soil Physics (bulk density, particle density, infiltration, hydraulic conductivity, water retention curve, column transport studies for solute modelling under saturated and unsaturated water flow settings). Method development in liquid and gas chromatography (HPLC-UV, HPLC-MS/MS, GC-ECD, GC-MS/MS) extraction, analysis, and quantitation of organic contaminants (pesticides, herbicides, fish off-flavour compounds, etc.) extracted from complex matrices such as soils, fresh and salt water, soilless growing media (peat, perlite, sand, etc.), and plant tissue. Statistics and Programming: Sigma Plot versions 10-14, SysmaStat, R-Studio, R. Water and Solute Transport Modeling: Hydrus-1D (UC-Riverside), RZWQM2 (USDA-ARS, Fort Collins, Colorado), Chem_Transport V2 (Selim, Louisiana State University). GIS: ArcExplorer, ArcView 3.0, ArcGIS 10.0.
PROFESSIONAL MEMBERSHIPS
• American Society of Agronomy and Soil Science Society of America, member #360961. • Costa Rican Association of Soil Science, member #143. • Costa Rica College of Agronomists, member #5615
PROFESSIONAL SERVICE
Reviewer (ad hoc), 2010-2017 • Revista de Biología Tropical (Universidad de Costa Rica) • Journal of Tropical Forest Science (Forest Research Institute of Malaysia) • Journal of Agricultural and Food Chemistry (American Chemical Society) • Bulletin of Env. Contamination and Toxicol. (Springer-Verlag) • Journal of Contaminant Hydrology (Elsevier) • Vadose Zone Journal (Soil Science Society of America) Departmental Committees (ad hoc), 2007-2010 • University of Costa Rica (UCR) – Program of Environmental Management • UCR – School of Agronomy – Scientific Committee for Thesis Evaluation
Scientific Judging (ad hoc), 2014-2016 • ASA-CSSA-SSSA International Annual Meetings, Nov. 6-9, Phoenix, Arizona, USA. Judge Service (ad hoc). Soil and Environmental Quality Division (Chair: Dr. Matthew Polizotto).
• UF-IFAS Soil and Water Science Department, University of Florida. Annual Research Forum, Set., 2014, 2015 & 2016. Gainesville, Florida, USA. Judge Service (ad hoc). (Evaluation Panel Chairmen: Dr. James Jawitz & Dr. Ramesh K. Reddy).