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Alternativ modell för miljöundervisning i dagens gymnasieskola - modellekosystem
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
2011 (Swedish)Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Studier visar att dagens elever känner oro inför framtiden och de klimatförändringar vår värld utsätts för. Skolverkets nationella kartläggning utav miljöundervisning i skolan visar dock att cirka hälften av de tillfrågade gymnasielärarna inte bedriver någon undervisning i ämnet. Denna studie beskriver en alternativ modell för undervisning i klimatfrågor. Elever ges genom modellering av ekosystem möjlighet att fördjupa sin förståelse kring klimatförändringar i samband med exploatering av topp-predatorer. Detta är ett realistiskt problem då en mängd studier visar att dagens ekosystem utsätts för en mängd stressfaktorer, med ursprung i klimatförändringar, och att exploatering av topp-predatorer kan leda till konsekvenser med artutdöende som följd. Modellen som används i undersökningen är en generell Lotka-Volterra-modell vilken fungerar som analytiskt verktyg. Skolverket betonar matematikens roll som ämnesöverskridande verktyg och modellekosystem ger elever möjlighet att använda matematiska kunskaper i ett verkligt scenario. I studien undersöks även hur pass stor exploatering topp-predatorer kan utsättas för i takt med ökade klimatförändringar. De undersökta områdena inbegriper tre- och fyr-artssystem i marina och terrestra miljöer. Resultaten visar att exploateringen måste minska i takt med ökade klimatorsakade förändringar i samtliga fall, undantag terrestra tre-artsystem som utsätts för förändrade interaktionsstyrkor.

Abstract [en]

Studies show that today's students are worried about the future and the increasing climate change. A survey made by the Swedish National Agency for Education about environmental education shows that approximately half of the surveyed secondary school teachers are not engaged in teaching in the field. This study describes an alternative model for teaching environmental issues. Students are by the modeling of ecosystem given an opportunity to deepen their understanding of climate change associated with the exploitation of top predators. This is a realistic problem, numerous studies show that today's ecosystems are exposed to a variety of stressors, with the origin of climate change, and the exploitation of top predators can lead to serious consequences with extinction as a result. The model used in this study is a generalized Lotka-Volterra model which works as an analytical tool. The Swedish National Agency for Education emphasizes the role of mathematics as interdisciplinary tools and model ecosystem gives students the opportunity to use math skills in a real scenario. The study also investigated how much exploitation top predators can be exposed to in line with increased climate change. The research sites include three-and four-species system of marine and terrestrial environments. The results show that the exploitation must be reduced in line with increased climate-caused changes in all cases, except terrestrial three-species system exposed to changes in interaction strengths.

Place, publisher, year, edition, pages
2011. , 21 p.
Keyword [en]
Exploitation, climate change, model ecosystems, trophic control, trophic mismatch, species interactions, environmental education
Keyword [sv]
exploatering, klimatförändringar, modellekosystem, trofisk kontroll, trofisk obalans, artinteraktioner, miljöundervisning
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:liu:diva-71690ISRN: LIU-LÄR- BI-A--11/103--SEOAI: oai:DiVA.org:liu-71690DiVA: diva2:452979
Subject / course
Biology
Educational program
Teacher Education
Uppsok
Life Earth Science
Supervisors
Examiners
Available from: 2012-06-28 Created: 2011-10-31 Last updated: 2012-09-10Bibliographically approved

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Exjobb-modellekosystem(388 kB)309 downloads
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Department of Physics, Chemistry and BiologyThe Institute of Technology
Biological Sciences

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