What is forest biometrics?

Forest biometrics research is concerned with the analysis of quantitative problems, the development of quantitative management tools, and the application of statistical methods within forest and ecosystem science.    rio mazagao-Day 1 051 - 2

What does a forest biometrician do?

Forest biometricians create growth and yield models, set up data sampling protocols, analyze experimental data, create new sampling tools, and MORE.  My research aims to promote better forest conservation and management by developing a better understanding of the dynamics of forested systems.  Specifically, my current research includes (but is not limited to):

      *   Design and analysis of experimental data on growth, production, and regeneration of tropical tree species, with an emphasis on the magnificent Brazil nut tree (with Kainer, Wadt, et al.)

      *   Quantification of uncertainty in forest simulation models (with my graduate student, Denis Valle)

      *   Response of intensively managed slash pine to uneven-management conversion scenarios (with my graduate student, Nilesh Timilsina)

      *   Quantifying size and structure distributional differences in forests (with LeMay), and in particular, in pure- versus mixed-family stands of managed southern pine (with Jokela, Martin, et al.)

      *   Predicting damage and debris generated by urban forests during hurricane events (with Escobedo, and graduate students Alicia Lawrence and Benjamin Thompson)

·         Building and enhancing models of urban forest structure and growth, and their responses to hurricanes and exotic invasive woody species in the southeastern US and Puerto Rico (with Escobedo, Young, Zipperer)

      *   Investigating the utility of zero-inflated Poisson models to forestry applications

 

My Research and Publications

Updated: November 16, 2009

Books published

Kozak, A., R.A. Kozak, C.L. Staudhammer, and S. Watts. 2008. Introductory Probability and Statistics: Applications for Forestry and Natural Sciences. CABI.

Errata (last updated February, 2009).

 

Articles published or accepted in refereed journals

Johnson, S.A., M.E. McGarrity, and C.L. Staudhammer. 2010. An effective chemical deterrent for invasive Cuban Treefrogs. Human-Wildlife Conflicts.  In press.

Staudhammer, C., F. Escobedo, C. Luley, and J. Bond. 2009. Urban Forest Debris from the 2004 and 2005 Hurricane Seasons in Florida. Southern Journal of Applied Forestry 33(4): 193-196(4).

Valle, D.R., C.L. Staudhammer, W. Cropper, and P. Van Gardingen. 2009. The importance of multimodel projections to assess uncertainty in projections from simulation models.  Ecological Applications 19(7): 1680-1692.

Escobedo, F., C. Luley, J. Bond, C. Staudhammer, and C. Bartel. 2009. Hurricane debris and damage assessment for Florida urban forests. Arboriculture & Urban Forestry 35(2): 100-106.

Staudhammer, C.L., E.J. Jokela, and T.A. Martin. 2009. Competition dynamics in pure- versus mixed-family stands of loblolly and slash pine in the southeastern United States.  Canadian Journal of Forest Research 39(2): 396-409.

Cotta, J., K. Kainer, L.H.O.Wadt, and C.L. Staudhammer. 2008. Shifting cultivation effects on Brazil nut (Bertholletia excelsa) regeneration.  Forest Ecology and Management 256: 28-35.

Vasconcelos, S.S., D.J. Zarin, M.M.  Araújo, L.G.T. Rangel-Vasconcelos, C.J.R. Carvalho, C.L. Staudhammer, and F. de Assis Oliveira.  2008.  Seasonal and experimental effects on litterfall quantity and quality in eastern Amazonian forest regrowth, Brazil.  Journal of Tropical Ecology 24:27-38.

Wadt, L. H. O., K. A. Kainer, C.L. Staudhammer, and R.O. Peréa Serrano. 2008. Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations.  Biological Conservation 141(1): 332-346.

Valle, D.R., C.L. Staudhammer, and W. Cropper. 2007. Simulating multiple use forest management: How to integrate the simulation of Non-Timber Forest Product (NTFP) extraction to the simulation of timber extraction in tropical mixed forests?  Journal of Forestry 105(6): 301-306(6).

Kainer, K. A., L.H. Wadt and C.L. Staudhammer. 2007.  Explaining variation in Brazil nut fruit production.  Forest Ecology and Management 250 (3): 244-255.

Rockwell, C.A., K.A. Kainer, C.L. Staudhammer, and C. Baraloto. 2007. Evaluating future crop tree damage in a certified community forest in southwestern Amazonia.  Forest Ecology and Management 242 (2):108-118.

Staudhammer, C. L., Maness, T. C. & Kozak, R. A. 2007.  Profile Charts for Monitoring Lumber Manufacturing Using Laser Range Sensor Data. Journal of Quality Technology. 39(3): 224-240.

Staudhammer, C.L., R.A. Kozak, and T.C. Maness.  2006.  SPC Methods for Detecting Simple Sawing Defects Using Real-Time Laser Range Sensor Data. Wood and Fiber Science. 38(4): 396-416.

Staudhammer, C.L. V.M. LeMay, R.A. Kozak, and T.C. Maness. 2005.  Mixed-Model Development for Real-Time Statistical Process Control Data in Wood Products Manufacturing.  Forest Biometry, Modeling and Information Sciences.  1: 19-35.

Maness, T. C., R.A. Kozak, and C.L. Staudhammer.  2004.  Reliability testing of statistical process control procedures for manufacturing with multiple sources of variation.  Wood and Fiber Science. 36(3): 443-458.

Maness, T.C., R.A. Kozak, and C.L. Staudhammer.  2003.  Applying Real-time Statistical Process Control to Manufacturing Processes Exhibiting Between and Within Part Size Variability.  Journal of Quality Engineering 16(1): 113-125.

Maness, T.C., C.L. Staudhammer, and R.A. Kozak.  2002.  Statistical Considerations for Real-time Size Control Systems in Wood Products Manufacturing.  Wood and Fiber Science.  34(3):476-484.

Staudhammer, C.L. and V.M. LeMay.  2001.  Introduction and Evaluation of Possible Indices of Stand Structural Diversity.  Canadian Journal of Forest Resources. 31(7): 1105-1115.

Staudhammer, C.L. and V.M. LeMay. 2000.  Height Prediction Equations Using Diameter and Stand Density Measures for Species in Coastal B.C.  Forestry Chronicle. 76(2): 303-309.

 

Articles submitted to or in progress for refereed journals

Zhao, M., C.L. Staudhammer, and F. Escobedo, Composition and structure of public and private urban forests in subtropical Miami-Dade County, USA. Submitted to Urban Ecosystems.

Tohver*, I.M., D.J. Zarin, D.C. Nepstad, K. Kitajima, and C.L. Staudhammer.  Response of understory trees to experimental drought in the Tapajós national forest, Brazil.  Submitted to Oecologia.

Staudhammer, C.L.  Methods for modeling over-dispersed count data: an application of the Zero-inflated Poisson model to forest regeneration data.  Submitted to Silva Fennica.

Londres, M., M. Schulze, C.L. Staudhammer, and K. Kainer Population structure and seed production of Carapa guianensis in three floodplain forest types of the Amazon estuary.  Submitted to Forest Ecology and Management.

Lee, H., E.A.G. Schuur, J.G. Vogel, M. Lavoie, D. Bhadra, and C.L. Staudhammer.  Spatially explicit analysis to model carbon fluxes at a larger scale in upland tundra where permafrost is thawing. Submitted to Journal of Geophysical Research-Biogeosciences.

Tamang, B., M.G. Andreu, C.L. Staudhammer, and D.L. Rockwood. Root isotropy and distribution in fast-growing cadaghi (Corymbia torelliana) planted in field windbreaks in Florida. To be submitted to Agroforestry Systems.

Tamang, B., M.G. Andreu, C.L. Staudhammer, and D.L. Rockwood. Biomass equations and carbon sequestration potential of fast-growing cadaghi (Corymbia torelliana) planted in windbreaks in Florida. To be submitted to Agroforestry Systems.

Kainer, K., C.L. Staudhammer, and L.H.O.Wadt. Trade-offs between growth and production in a long-lived tropical tree species.  In preparation.

Zuidema, P. and C.L. Staudhammer. The relationship between fruiting patterns in Brazil nut and long-term weather cycles in the western Amazon.  In preparation.

Staudhammer, C.L., L.F. Osorio, and F. Escobedo. New biomass equations for urban trees in the southeastern US.  In preparation.

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Other refereed contributions

Staudhammer, C.L., Roth. B.E., and L.F. Osorio.  2006.  Growth and Yield Differences in Pure- Versus Mixed-Family Stands: Six-Year Results From Slash and Loblolly Pine Trials. Presented at IUFRO 40402 meeting: Sustainable Forest Management with Fast Growing Plantations. October 10-14, 2006. Charleston, SC.

LeMay , V.M. and C.L. Staudhammer, C.L.  2005.  Indices of Stand Structural Diversity: Mixing discrete, continuous, and spatial variables.  Presented at Sustainable forestry in theory and practice:  recent advances in statistics, modeling, and knowledge management, April 5 to 8, Edinburgh, Scotland.

LeMay, V.M. and C.L. Staudhammer.  2000.  Relationships of Stand Structural Diversity to Common Stand Measures.  Presented at the IUFRO 4.01.00 Planning of Long Term Observations, World Forestry Congress, August 7-12, 2000, Kuala Lumpur, Malaysia.

 

Non-refereed contributions

 Invited presentations

Staudhammer, C.L. 2009. Modeling data repeated over time and space: investigations of autocorrelation structures, response variables, and trigonometric random regression.  Presented at the Joseph W. Jones Ecological Research Center, November 12, 2009, Newton, GA.

Staudhammer, C.L.  2007.  Statistical Design for Research in Ecology and Natural Resources.  Presented for students and faculty in Mestrado em Ecologia e Manejo de Recursos Naturais (Masters in Ecology and Natural Resources Management) program at Universidade Federal do Acre (UFAC), Rio Branco, Acre, Brazil, June 27, 2007.

Staudhammer, C.L.  2007.  Sampling and Experimental Design for Natural Resources Professionals.  Presented at Centro de Pesquisa Agroflorestal do Acre (Embrapa Acre), Rio Branco, Acre, Brazil, June 26, 2007.

LeMay, V.M., H. Temesgen, K.L. Froese, and C.L. Staudhammer.  2003. Stand structure - stand and landscape level.  Presented at the 2003 Canadian Forest Inventory Committee meeting, Cypress Hills, Saskatchewan, June 1-5, 2003.

Contributed presentations

Wadt, L.H.O., K.A. Kainer, C.L. Staudhammer, and A. Duchelle. 2009. Seeking sustainability in the Amazon: Shifting from Brazil nut exploitation to conscious management. Poster presented at the XIII World Forestry Conference, October 18-23, 2009, Buenos Aires, Argentina. (Contributed)

Staudhammer, C.L., K.A. Kainer, and L.H.O. Wadt. 2009. Trigonometric random regression modeling: an application describing the growth - production tradeoff in a tropical tree species.  Presented at the Southern Mensurationists Meeting, October 25-27, 2009, San Antonio, TX. (Contributed)

Staudhammer, C., F. Escobedo, C. Luley, and J. Bond. 2009. Urban Forest Debris and Damage Assessment: the Florida 2004-2005 Hurricane Seasons. Talk presented at the Society of American Foresters’ National Convention, September 30-October 4, 2009, Orlando FL. (Contributed)

Escobedo, F., C. Staudhammer, B. Thompson, Z. Szantsoi, S. Smith, M. Duryea, and B. Dewitt. 2009. Rapid Assessment of Urban Forest Damage and Debris Following Hurricanes. Talk presented at the Society of American Foresters’ National Convention, September 30-October 4, 2009, Orlando FL. (Contributed)

Camp, E.V., W.E. Pine III, C.L. Staudhammer, T.K. Frazer.  2009.  Relationships between aquatic habitats and small fish and macroinvertebrates:  consequences of habitat shifts.  Annual meeting of the American Fisheries Society, August 30 - September 3, 2009, Nashville, Tennessee. (Contributed).

Camp, E, W.E. Pine, C.L. Staudhammer, and T.K. Frazer. 2009. Macrophyte declines in Florida's spring-fed rivers:  implications for faunal organisms Assessing relationships between aquatic habitats and small fish and macroinvertebrates: does plant type matter?  Talk presented at the 94th Ecological Society of America Annual Meeting, August 2-7, 2009, Albuquerque, New Mexico. (Contributed)

Staudhammer, C.L., F.E. Escobedo, and M. Zhao. 2009.  Patterns of invasive woody trees in a tropical urban forest: Implications for land management and ecosystem services Poster presented at the 94th Ecological Society of America Annual Meeting, August 2-7, 2009, Albuquerque, New Mexico. (Contributed)

Staudhammer, C.L., F.E. Escobedo, and L.F. Osorio. 2009. An Investigation of the Effect of Selection Probabilities in Randomized Branch Sampling for Urban Quercus Trees. Talk presented at the Western Mensurationists Meeting, Vancouver, Washington, June 21-23, 2009. (Contributed)

Camp, E, W.E. Pine, C.L. Staudhammer, and T.K. Frazer. 2009. Assessing relationships between aquatic habitats and small fish and macroinvertebrates: does plant type matter?  Presented at the Annual Meeting of the Florida Chapter of the American Fisheries Society, February 17-19 2009, Altoona, Florida.

Escobedo, F.J., M. Duryea, C. L. Staudhammer, S. Smith, B. Dewitt, L.F. Osorio, Z. Szantsoi, and B. Thompson.  2008. Rapid Assessment of Urban Forest Landscapes Following a Hurricane:  Damage and Debris.  Proceedings of the IUFRO 8.01.02 International Conference. Landscape Ecology and Forest Management: Challenges and Solutions. Chengdu, China. September 16–22, 2008, 74-75.

Valle, D.R. and C.L. Staudhammer. 2008.  Assessing model uncertainty in forest dynamic models. Poster presented at Working Forests in the Tropics Meeting, October 5-7, 2008, Gainesville, Florida. (Contributed)

Lawrence, A.B., F.J. Escobedo, and C. L. Staudhammer.  2008. Analysis of Biomass Equations for Common Urban Trees in Gainesville, FL.  Poster presented at ACES (A Conference on Ecosystem Services) 2008: Using Science for Decision Making in Dynamic Systems, Naples, FL. December 8-11, 2008.

Timilsina, N. and C.L. Staudhammer. 2008. Simulation modeling to test harvest regimes for stand conversion and old-growth restoration in southern pine.  Poster presented at School of Forest Resources & Conservation - Society of American Foresters 39th Annual Spring Symposium, April 16-17, 2008, Gainesville, FL.

Staudhammer , C.L., K.A. Kainer, and L.H.O. Wadt. 2007 Modelling Brazil nut demography and fruit fate: issues of scale and dispersion.  Presented at the Southern Mensurationists Meeting, November 12-14, 2007, Orange Beach, Alabama.

Valle, D.R. and C.L. Staudhammer. 2007.  Assessing uncertainty in forest dynamic models. Poster presented at Ecological Society of America/Society for Ecological Restoration Meeting, August 5-August 10, 2007, San Jose, California.

Wadt, L.H.O., K.A. Kainer, C.L. Staudhammer, and R.O.P. Serrano. 2007. Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. Presented at Association of Tropical Biology and Conservation Annual Meeting, July 15-19, 2007, Morelia, Mexico.

LeMay, V.M. and C.L. Staudhammer.  2007.  A stand structural diversity index for horizontal, vertical, and spatial diversity.  Presented at IUFRO Complex Stands Structures and Associated Dynamics: measurement indices and modelling approaches, July 29 to August 2, 2007, Sault Ste. Marie, Ontario, Canada.

Staudhammer, C.L., E. Jokela, T.A. Martin.  2007. Differences in Growth, Yield, and Size Distributions In Pure- Versus Mixed-Family Stands: Six-Year Results From Slash And Loblolly Pine Trials.  Presented at: Biennial Southern Silvicultural Research Conference, February 26-March 1, 2007, Athens, GA.

Staudhammer, C.L., M.C. Monroe, L. McDonell, D.R. Carter, E. Macie, A. Hermansen-Báez.  Wood to Energy: Utilizing Interface Fuels for Bioenergy in the Southern United States.  Presented at the 6th National Conference on Science, Policy and the Environment: Energy for a Sustainable and Secure Future, January 26-27, 2006, Washington, DC.

Staudhammer, C.L., T.C. Maness, and R.A. Kozak.  2004.  Research challenges in real-time wood products SPC.  Presented at Forest Products Society Meeting, Grand Rapids , MI, June 27-30, 2004.

Arcese, P., A. Burger, A. Fall, D. Lank, S. Runyan, E. Selak, D. Steventon, C. Staudhammer, G. Sutherland.  2004.  Monitoring Population Trend in the Marbled Murrelet.  Presented at Species at Risk 2004: Pathways to Recovery, March 2-6, 2004, Victoria, BC.

Staudhammer, C.L., T.C. Maness, R.A. Kozak, and V.M. LeMay.  2003.  Mixed model analysis of highly correlated data: applications in Wood Products Manufacturing.  Presented at Western Mensurationists Conference, July 1-3, 2003, Victoria, BC.

Staudhammer, C.L., T.C. Maness, and R.A. Kozak. 2003.  Case Study of Real-time SPC in Lumber Manufacturing.  Technical Forum (Poster) Presentation at Forest Products Society Meeting, June 23, 2003, Bellevue, WA.

LeMay, V.M., H. Temesgen, K.L. Froese, and C.L. Staudhammer.  2003. Stand structure - stand and landscape level.  Presented at the 2003 Canadian Forest Inventory Committee meeting, Cypress Hills, Saskatchewan, June 1-5, 2003.

Staudhammer, C.L., T.C. Maness, and R.A. Kozak. 2003.  Analysis of real-time statistical process control data in lumber manufacturing.  Presented at the IUFRO – All Division 5 Conference, March 11-15, 2003, Rotorua, New Zealand.

Staudhammer, C.L., T.C. Maness, and R.A. Kozak.  2002.  Applying real-time statistical process control to manufacturing processes exhibiting between and within part size variability.  Presented at Forest Products Society Meeting, Madison, WI.

Staudhammer, C.L., T.C. Maness, and R.A. Kozak.  2002.  Real-time Size Control Systems in Wood Products Manufacturing.  UBC Faculty of Forestry Research Poster Presentations (in association with the Faculty of Forestry Jubilee Lecture Series), January 22, 2002, Vancouver, B.C.

Kovacs, C.L. and V.M. LeMay.  1998.  Measurement of Biodiversity in Structurally Diverse Forests.  Presented at Western Mensurationists Conference, Port Ludlow, Washington.

 

image008Proprietary Research and Reports

Reports prepared for J.S. Thrower and Associates

o   Tree Farm License (TFL) 45 Inventory Audit and Statistical Adjustment.  Prepared for International Forest Products Ltd, Vancouver, B.C. (April, 2001)

o  Vegetation Resources Inventory Statistical Adjustment for the Lignum Innovative Forest Practices Area (IFPA) Area.  Prepared for Lignum Ltd., Williams Lake, B.C. (March, 2001)

o  TFL 15 Site Index Adjustment Interim Report.  Prepared for Weyerhaeuser Company Ltd., Okanagan Falls, B.C. (March, 2001)

o  Potential Site Index Estimates for Douglas-Fir, Western Hemlock, Pacific Silver Fir, and Western Red Cedar on TFL 46.  Prepared for TimberWest Forest Corp., Vancouver, B.C. (March, 2001)

o  Vegetation Resources Inventory Statistical Adjustment for the Merritt TSA.  Prepared for the Ministry of Forests, Merritt Forest District, Merritt, B.C. (March, 2001)

o  Characterizing Stand Structure on the Lignum IFPA.  Prepared for Lignum Ltd., Williams Lake, B.C. (March, 2001)

o  Potential Site Index Estimates for Major Commercial Tree Species on TFL 8.  Prepared for Pope and Talbot Ltd., Midway, B.C. (March, 2001)

o  Potential Site Index Estimates for Major Commercial Tree Species on TFL 15.  Prepared for Weyerhaeuser Company Ltd., Okanagan Falls, B.C. (March, 2001)

o  Volume Estimates from Map Attributes On TFL 37.  Prepared for Canadian Forest Products Ltd., Woss, B.C. (March, 2000)

o   Potential Site Index Estimates for Major Commercial Tree Species in the Hope IFPA.  Prepared for International Forest Products Ltd., Hope, B.C. (March, 2000)

o  Potential Site Index Estimates for Major Commercial Tree Species on TFL 37.  Prepared for Canadian Forest Products Ltd., Woss, B.C. (March, 2000)

o  Time Trends in Growth Intercept Predictions of Interior Spruce.  Prepared for the Ministry of Forests, Forest Practices Branch, Victoria, B.C. (March, 2000)

o  Statistical Adjustment of the Vegetation Resources Inventory in the Hope IFPA.  Prepared for International Forest Products Ltd., Hope, B.C. (March, 2000)

o  Dry Belt Interior Douglas-fir Studies in Pothole Creek and the Merritt Timber Supply Area: 1999 and 2000.  Prepared for Weyerhaeuser Company Ltd., Kamloops, B.C. (March, 2000)

o  Time Trends in Growth Intercept Predictions of Coastal Douglas-Fir: Phase I.  Prepared for the Ministry of Forests, Forest Practices Branch, Victoria, B.C. (March, 1999)

 
Other Reports

Staudhammer, C.L., E.A. Jokela, and T.A. Martin.  2007.  Study A00 – Spacing by cultural interactions for elite southern pine genotypes: summary from the eastern PPINES series at age 7 years.  Forest Biology Research Cooperative Report #59.

Staudhammer, C.L., B.E. Roth, and L.F. Osorio.  2006.  Study A11G – Predicting pure plot performance of elite full-sib genotypes from mixed plots.  FBRC Report #49.

Kovacs, C.L. and V.M. LeMay.  Height-Diameter Equations for the Malcolm Knapp Research Forest.  Prepared for the UBC. Malcolm Knapp Research Forest, Haney, B.C. (1999)

LeMay, V.M., C.L. Kovacs, and P.L. Marshall.  Developing a Permanent Sample Plot Matrix:  Criteria for Pooling or Separating Permanent Sample Plot Data.  Prepared for the Ministry of Forests, Resources Inventory Branch, Victoria, B.C. (1998)

LeMay, V.M., C.L. Kovacs, and P.L. Marshall.  Developing a Permanent Sample Plot Matrix:  Differences in Permanent Sample Plot Data by BEC Zone.  Prepared for the Ministry of Forests, Resources Inventory Branch, Victoria, B.C. (1998)


HONORS

Finalist, Marra Award, 2006 (Society of Wood Science and Technology).  Award given to the best paper in Wood and Fiber Science.

Runner-up, Brumbaugh Award, 2007 (American Society for Quality). Award given to the paper in an ASQ journal that made the largest contribution to the development of quality control.

spring2 025Service to Professional Organizations

American Statistical Association

Society of American Foresters

IUFRO 4.01.01 working group (design, performance and evaluation of experiments)

Southern Mensurationists: 2008 Meeting chair

Southern Mensurationists: 2007 Meeting committee

Western Mensurationists: 2005 Meeting committee

Forest Products Society: Chairman of Quality Control, Process Control, and Production Management Group

North American Teachers of Agriculture

Reviewer for Scholarly Journals

Canadian Journal of Forest Research

Forest Science

Silva Fennica

Forest Ecology and Management

Forest Biometry, Management and Information Science

Journal of Theoretical Biology

Southern Journal of Applied Forestry

Environmental and Ecological Statistics

Currently Funded Research

Date

Value

Funding Agency

Title

Role

2005 - 2008

$663,031

U S D A

Wood to Energy: a Training Program to Utilize Interface Fuels for Bioenergy

Co-PI

2007

 $1,000

UF/IFAS

International Travel Award (Brazil)

PI

2007 - 2009

$99,956

USDA Forest Service

Rapid Assessment of the Urban Forest Following a Hurricane (Phase 2)

Co-PI

2007 - 2009

$99,960

FDACS – Division of Forestry

Urban Forestry Rapid Damage Assessment (Phase 1)

Co-PI

2008 - 20010

  $268,146

Florida FWC – State Wildlife Grants

Fish-habitat relationships in Florida springs: Do submersed plants and filamentous algae influence the population structure and production of small-bodied fishes?

Co-PI

2009-2011

$117,520

USDA-CSREES Tropical Subtropical Agriculture Research

Spatial vegetation-social dynamics of invasive tree species

PI

2009-2014

$236,000

USDA-CSREES National Needs Graduate and Postgraduate Fellowship Grants Program

Developing Adaptive Management Strategies for Ecosystems in Transition

PI

 

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[1] Former name: Christina Kovacs