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Villy Christensen

February 13, 2024

Villy Christensen is an ecosystem modeller with a background in fisheries science. He is known for his work as a project leader and core developer of Ecopath, an ecosystem modelling software system widely used in fisheries management.[1] Ecopath was initially an initiative of the NOAA, but since primarily developed at the UBC Fisheries Centre of the University of British Columbia. In 2007, it was named as one of the ten biggest scientific breakthroughs in NOAA's 200-year history. The citation states that Ecopath "revolutionized scientists' ability worldwide to understand complex marine ecosystems".[2]

Biography edit

Christensen did his Ph.D. under Sven Erik Jørgensen at Copenhagen University. Jeffrey Polovina initiated the Ecopath approach in the early 1980s.[3] Christensen, along with Daniel Pauly and others, has been involved in the subsequent development of Ecopath since 1990.[4][5]

Christensen currently facilitates international workshops on Ecopath around the world. He is a professor at the UBC Fisheries Centre at the University of British Columbia, specialising in ecosystem modelling. His main project is with the Sea Around Us Project working on "database-driven ecosystem model construction", with the aim of using "global, spatial databases to parameterize, balance and fit ecosystem models".[6] This work includes developing a dynamic exchange model of biomass over time in the Chesapeake Bay area, as well as how marine protected areas can be optimally positioned.[6] He is also director of the Lenfest Ocean Futures Project,[7] where a visualization system is being developed to support decision making in ecosystem-based fisheries management. This system combines Blender, a 3D-gaming engine, with Ecopath.[8][9][10][11]

Selected papers edit

  • Wilson RW, Millero FJ, Taylor JR, Walsh PJ, Christensen V, Jennings S and Grosell M (2009) "Contribution of Fish to the Marine Inorganic Carbon Cycle" Science, 323 (5912) 359–362. (This article provides a first estimate of global fish biomass)
  • Pauly D, Christensen V, Dalsgaard J, Froese R and Torres F (1998) "Fishing down marine food webs" Science, 279: 860–863.
  • Pauly D and Christensen V (1995) "Primary production required to sustain global fisheries" Nature 374(6519): 255–257.
  • Christensen V (1996) "Managing fisheries involving top predator and prey species components"[permanent dead link] Review in Fish Biology and Fisheries, 6:417-442. (First published description of "fishing down the food web" concept)
  • Christensen V (1995) "Ecosystem maturity - towards quantification"[permanent dead link] Ecological Modelling, 77: 3-32.
  • Christensen V and Pauly D (1992) "ECOPATH II - A software for balancing steady-state ecosystem models and calculating network characteristics"[permanent dead link] Ecological Modelling, 61:169-185. (Third-most cited paper in this journal)
  • Refereed publications
  • Non-refereed publications
  • Books and reports

See also edit

  • Sven Erik Jorgensen – Danish ecologist and chemist
  • Irene Tarimo – Tanzanian scientist, biologist and educator
  • Tolly Mbwette – Tanzanian academic (1956-2020)

Notes edit

  1. ^ Ecopath with Ecosym Main website.
  2. ^ NOAA: ECOPATH Modeling: Precursor to an Ecosystem Approach to Fisheries Management Top ten breakthroughs.
  3. ^ Polovina JJ and Marten, GG (1982) "A comparative study of fish yields from various tropical ecosystems". In: Pauly D and Murphy GI (Eds.) Theory and Management of Tropical Fisheries. ICLARM Conference Proceedings 9, 255–286.
  4. ^ Christensen V and Pauly D (1992) "ECOPATH II - A software for balancing steady-state ecosystem models and calculating network characteristics"[permanent dead link] Ecological Modelling, 61:169-185.
  5. ^ Christensen V and Walters CJ (2004) "Ecopath with Ecosim: methods, capabilities and limitations"[permanent dead link] Ecological Modelling 172, 109–139
  6. ^ a b Dr Villy Christensen UBC web site. Retrieved 17 June 2009.
  7. ^ . Archived from the original on 2009-01-04. Retrieved 2008-12-22.
  8. ^ MDM/UBC Fisheries Ocean Viz Collaboration Youtube.
  9. ^ Fish Population Data Visualisation BlenderNation, 9 April 2008
  10. ^ Ocean 120MB video.
  11. ^ Ocean Summits and Virtual Fish: Games for a Sustainable Future

External links edit

  • Dr Villy Christensen UBC web site.
  • NOAA.

February 13, 2024
villy, christensen, ecosystem, modeller, with, background, fisheries, science, known, work, project, leader, core, developer, ecopath, ecosystem, modelling, software, system, widely, used, fisheries, management, ecopath, initially, initiative, noaa, since, pri. Villy Christensen is an ecosystem modeller with a background in fisheries science He is known for his work as a project leader and core developer of Ecopath an ecosystem modelling software system widely used in fisheries management 1 Ecopath was initially an initiative of the NOAA but since primarily developed at the UBC Fisheries Centre of the University of British Columbia In 2007 it was named as one of the ten biggest scientific breakthroughs in NOAA s 200 year history The citation states that Ecopath revolutionized scientists ability worldwide to understand complex marine ecosystems 2 Villy ChristensenAlma materCopenhagen UniversityKnown forDeveloping EcopathScientific careerFieldsEcosystem modelling fisheries scienceInstitutionsUBC Fisheries Centre University of British ColumbiaDoctoral advisorSven Erik Jorgensen Contents 1 Biography 2 Selected papers 3 See also 4 Notes 5 External linksBiography editChristensen did his Ph D under Sven Erik Jorgensen at Copenhagen University Jeffrey Polovina initiated the Ecopath approach in the early 1980s 3 Christensen along with Daniel Pauly and others has been involved in the subsequent development of Ecopath since 1990 4 5 Christensen currently facilitates international workshops on Ecopath around the world He is a professor at the UBC Fisheries Centre at the University of British Columbia specialising in ecosystem modelling His main project is with the Sea Around Us Project working on database driven ecosystem model construction with the aim of using global spatial databases to parameterize balance and fit ecosystem models 6 This work includes developing a dynamic exchange model of biomass over time in the Chesapeake Bay area as well as how marine protected areas can be optimally positioned 6 He is also director of the Lenfest Ocean Futures Project 7 where a visualization system is being developed to support decision making in ecosystem based fisheries management This system combines Blender a 3D gaming engine with Ecopath 8 9 10 11 Selected papers editWilson RW Millero FJ Taylor JR Walsh PJ Christensen V Jennings S and Grosell M 2009 Contribution of Fish to the Marine Inorganic Carbon Cycle Science 323 5912 359 362 This article provides a first estimate of global fish biomass Pauly D Christensen V Dalsgaard J Froese R and Torres F 1998 Fishing down marine food webs Science 279 860 863 Pauly D and Christensen V 1995 Primary production required to sustain global fisheries Nature 374 6519 255 257 Christensen V 1996 Managing fisheries involving top predator and prey species components permanent dead link Review in Fish Biology and Fisheries 6 417 442 First published description of fishing down the food web concept Christensen V 1995 Ecosystem maturity towards quantification permanent dead link Ecological Modelling 77 3 32 Christensen V and Pauly D 1992 ECOPATH II A software for balancing steady state ecosystem models and calculating network characteristics permanent dead link Ecological Modelling 61 169 185 Third most cited paper in this journal Refereed publications Non refereed publications Books and reportsSee also editSven Erik Jorgensen Danish ecologist and chemistPages displaying short descriptions of redirect targets Irene Tarimo Tanzanian scientist biologist and educator Tolly Mbwette Tanzanian academic 1956 2020 Notes edit Ecopath with Ecosym Main website NOAA ECOPATH Modeling Precursor to an Ecosystem Approach to Fisheries Management Top ten breakthroughs Polovina JJ and Marten GG 1982 A comparative study of fish yields from various tropical ecosystems In Pauly D and Murphy GI Eds Theory and Management of Tropical Fisheries ICLARM Conference Proceedings 9 255 286 Christensen V and Pauly D 1992 ECOPATH II A software for balancing steady state ecosystem models and calculating network characteristics permanent dead link Ecological Modelling 61 169 185 Christensen V and Walters CJ 2004 Ecopath with Ecosim methods capabilities and limitations permanent dead link Ecological Modelling 172 109 139 a b Dr Villy Christensen UBC web site Retrieved 17 June 2009 Lenfest Ocean Futures Project Archived from the original on 2009 01 04 Retrieved 2008 12 22 MDM UBC Fisheries Ocean Viz Collaboration Youtube Fish Population Data Visualisation BlenderNation 9 April 2008 Ocean 120MB video Ocean Summits and Virtual Fish Games for a Sustainable FutureExternal links editDr Villy Christensen UBC web site Animated documentary on Chesapeake Bay NOAA Retrieved from https en wikipedia org w index php title Villy Christensen amp oldid 1162925385, wikipedia, wiki, book, books, library,

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