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Katherine tutors in Denver, CO

Katherine z.

Private tutor in Denver, CO


Education PhD Zoology 2000 North Carolina State University Raleigh, North Carolina Masters of Biomathematics 1992 North Carolina State University Raleigh, North Carolina B.S. Biology/Minor Chemistry 1989 Wake Forest University Winston-Salem, North Carolina


Teaching Experience Teaching Assistantship 1992-1994 North Carolina State University – Undergraduate Statistics Department Substitute Teacher 1999-2004 Colorado Academy – Pre-K through 8th Grade – All Subjects Outreach Gifted and Talented Teacher – 2000-2001 Adams County – 3rd and 4th Grade – Underperforming Schools Professional Experience Fishery Biologist 2010-2011 North Wind Inc. • Continued to be the lead on the June Sucker Recovery Plan by incorporating all pertaining research results, team member edits, and recovery strategies into the Recovery Plan draft. • Continued to provide analyses results and reports for Stanislaus River discharge analyses, and calculated O. mykiss “Usable Area” using raster files of various discharges created by a hydraulic 2D model. • Completed Rio Grande silvery minnow analyses and report on their use of off-channel areas versus main channel areas. • Performed field studies on the fish egg collection efficiency for new netting device. Analyzed data and completed report which will be submitted to a publication. • Provide surveying expertise using GPS systems, conventional total stations, data collectors, and associated software. Fishery Biologist 2009-2010 U.S. Bureau of Reclamation • Led a team of agency and university professionals in creation of an ESA required June Sucker Recover Plan in Utah. • Performed Instream Flow Incremental Methodology (IFIM) study in Montana river system to ascertain flow relationships in accordance with available habitat for fish populations; Mathematically modeled potential habitat based on discharge for various Bull trout lifestages using PHABSIM. • Gained knowledge of Rio Grande fisheries and their resources in order to perform analytical studies to further understand Rio Grande fishes in their native habitat; Performed proper sampling and handling methodologies for juvenile and adult fish. Fisheries Modeler 2006-2009 S.A.I.C., Inc. • Designed and implemented statistically robust methods of data collection for projects (ie. sample size calculations); Apply standard and customized computer techniques to data collection and analysis (ie. SAS, macro creation in MS Excel, etc.); Ensure that results are valid and reliable and evaluate statistical results in consultation with project members; Write and/or present comprehensive reports based on the data collected; Provide advice and consultation to project team members in sampling design and subsequent analyses considerations for a variety of biological sampling situations. • Conducted study in Stanislaus River, CA to provide information useful in predicting potential effects of Reclamation specific proposed river discharge actions on fisheries and other aquatic resources; Exploring new methodologies, in concert with River 2D modeling, which intend to analyze and describe river system responses and impacts to differing proposed discharges. • Developed habitat availability and use data for fish in Stanislaus River by acquiring field data of fish observations; Calculated metrics of habitat use of and availability to fish via GIS spatial analyses overlay of hydraulic 2D model; Utilize these metrics to create quality output describing relationships between river discharge and fish habitat; Prepared report to document and provide evidence of the impact of various river discharges on Stanislaus fisheries. • Collected, compiled, and analyzed acoustic telemetry data to determine predator–prey relationships in Sacramento-San Joaquin River Delta; Created GIS layers and performed spatial analyses of resulting movement data; Utilized statistical models to test hypotheses of fish movement in relation to independent variables (ie. ANOVA, Pearson, Spearman, Chi-Square, and other parametric and nonparametric techniques). • Ascertained habitat preference and recapture rates for juvenile salmonids using PIT and snorkeling techniques; Created GIS layers to describe fish habitat use in Northern California (Trinity River); Developed study protocol and sampling design for collection of invertebrate data at juvenile salmonid sampling sites. • Performed fish population modeling with Ecosystem Diagnosis and Treatment (EDT) for Reclamation water projects in the Pacific Northwest; Analyzed model output and produced reports in order to validate effects of modeling. • Mathematically-modeled habitat available to fish using their geo-referenced critical habitat overlayed with hydraulic 2D model output raster data of Naches River in Yakima Basin, Washington. Environmental Scientist 2003-2005 Savci Environmental Technologies, Inc.  Performed statistical analysis and data modeling for environmental remediation projects.  Created reports and tables to support analytical conclusions. Adjunct Faculty 2002-2003 Metropolitan State College of Denver  Taught Introduction to Geographic Information Systems which provided students with the basic theoretical, technical, and application knowledge of geographic information systems (GIS).  Introduced and provided direct experience with the techniques used to manipulate and display spatial data using GIS. Senior GIS Specialist 1999-2001 S.A.I.C., Inc  Executed statistical assessments, analyses, and research related to compliance with pertinent Federal (CERCLA, NEPA, etc.), state and local environmental regulations.  Provided Geographical Information System (GIS) technical support in the development, presentation, and maintenance of geospatial data for environmental and engineering projects.  Performed geospatial analysis using ESRI products, and utilized geographical information technologies to create report-ready maps.  Worked closely with a variety of professionals in order to produce client driven products. Fisheries Biologist 1993-1998 U.S. Fish and Wildlife Service  Performed statistical analysis and data modeling in support of an endangered fish ESA Recovery Plan for Gulf sturgeon.  Provided channel of communication with continued dialogue to study teams, regional, and field office personnel regarding collection and use of gulf sturgeon data on ongoing projects, and provided advice on study sampling designs, collection of data, and robust analyses in order to continuously evaluate this fisheries resource.  Applied remote sensing technologies with Geographical Information System (GIS) software to create population movement and habitat use mathematical models.  Utilized a variety of field sampling techniques to acquire data for capture-recapture statistical models to estimate population abundance and population dynamics of fish species.  Collected water quality and habitat data in the field and via state recorded data.  Worked with diverse local, state, and federal agencies many seasons in order to facilitate data collection and report production. Publications Sechrist,J. and K.P. Zehfuss. 2010. Fish Entrainment Investigations at the Fort Shaw Diversion, Sun River, Montana. Intermountain Journal of Sciences 16:4-24 Clark, K., K. P. Zehfuss, R. Mayfield, and M. Bowen. In Process. Quantification of Pre-Screen Loss of Juvenile Steelhead Within Clifton Court Forebay. Program Number 2007-xxx. California Department of Water Resources. Yoder, N.J., M. Bowen, K.P. Zehfuss, J. Hubble, B. Watson, and G.R. Blair, 2006. Systematic Sensitivity Analysis of the EDT Model Applied to Selected Fish Populations in the Yakima River Basin, Technical Memorandum 86-68290-11, U.S. Department of Interior, Bureau of Reclamation, Yakima Area Office, Yakima, Washington and Technical Service Center, Denver, Colorado, 69 pp. Hightower, J. E., K. P. Zehfuss, D. A. Fox, and F. M. Parauka. 2002. Summer habitat use by Gulf sturgeon in the Choctawhatchee River, Florida. Journal of Applied Ichthyology 18:595-600. Zehfuss, K. P. 2000. The status, movement, habitat preference, and monitoring of Gulf sturgeon in several Florida rivers. iii, 158 leaves : ill. ; 29 cm. Thesis (Ph.D.)-North Carolina State University. Zehfuss, K. P., J. E. Hightower, and K. H. Pollock. 1999. Abundance of Gulf sturgeon in the Apalachicola River, Florida. Transactions of the American Fisheries Society 128: 130-143.


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Gym Fitness: Weight Training, Yoga. Horse Riding My three kids :)

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