| fullrecord |
[{"key": "dc.contributor.advisor", "value": "Ketola, Tarmo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Kronholm, Ilkka", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Liukkonen, Martta", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2020-05-15T05:45:23Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2020-05-15T05:45:23Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2020", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/68991", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ilmastonmuutoksen kiihtyess\u00e4 ja ihmisen aiheuttamien ymp\u00e4rist\u00f6vaikutusten laajentuessa lajien on sopeuduttava yh\u00e4 nopeammin. Jos populaatiolla ei ole fenotyyppist\u00e4 plastisuutta tai mahdollisuutta siirty\u00e4 uudelle alueelle, sen on kyett\u00e4v\u00e4 hy\u00f6dynt\u00e4m\u00e4\u00e4n jo olemassa olevaa geneettist\u00e4 materiaalia tai tuotettava uusia kelpoisuutta lis\u00e4\u00e4vi\u00e4 mutaatioita. T\u00e4ss\u00e4 tutkimuksessa tarkoitukseni oli testata, miten populaation evolutiivinen tausta ja ymp\u00e4rist\u00f6nmuutoksen nopeus vaikuttavat populaation kykyyn selviyty\u00e4 muuttuvissa ymp\u00e4rist\u00f6olosuhteissa. Altistin tasaisessa ja vaihtelevassa l\u00e4mp\u00f6tilassa kasvatettuja Serratia marcescens spp. DB11 \u2013klooneja kahdelle eri l\u00e4mp\u00f6k\u00e4sittelylle (hidas ja nopea) tarkastellakseni vaikuttiko aiempi l\u00e4mp\u00f6k\u00e4sittely populaatioiden kykyyn selviyty\u00e4 \u00e4\u00e4ril\u00e4mp\u00f6tilassa. Kumpikin l\u00e4mp\u00f6k\u00e4sittely p\u00e4\u00e4ttyi ennalta m\u00e4\u00e4riteltyihin maksimil\u00e4mp\u00f6tiloihin (39,5 ja 40,0 \u00b0C). Kokeen tulokset osoittavat, ett\u00e4 l\u00e4mp\u00f6tilan hidas muutos mahdollistaa populaation paremman kasvun \u00e4\u00e4ril\u00e4mp\u00f6tilassa ja lis\u00e4\u00e4 selviytymisen mahdollisuutta. Evolutiivisella taustalla ei ole merkitt\u00e4v\u00e4\u00e4 vaikutusta populaatiokokoon eik\u00e4 selviytymiseen. Tulosteni perusteella nopeat muutokset ymp\u00e4rist\u00f6olosuhteissa rajoittavat lajien kyky\u00e4 sopeutua, ja t\u00e4m\u00e4n takia ilmastonmuutoksen aiheuttamilla s\u00e4\u00e4n \u00e4\u00e4ri-ilmi\u00f6ill\u00e4 ja habitaattien katoamisella on huomattavia vaikutuksia populaatioiden geneettiseen sopeutumiskykyyn, ellei ilmastonmuutosta pystyt\u00e4 hidastamaan.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "As climate change accelerates and habitats free from anthropogenic impacts diminish, populations are forced to adapt quickly. If a population does not have suitable phenotypic plasticity or lacks the ability to migrate, genetic adaptation is the sole way to avert extinction. Evolutionary rescue (ER) is a phenomenon, in which a population that has experienced a population decline due to changed environmental conditions, is able to recover through standing genetic variation or mutation. I tested how the evolutionary background and the speed of environmental change affect populations\u2019 ability to recover through ER by exposing clonal populations of Serratia marcescens spp. DB11 to two different rates of steady temperature increase. Prior to this experiment the clones were subjected to three different thermal treatments resulting in different evolutionary backgrounds. The thermal treatments were stopped once both treatments reached the pre-defined maximum temperatures of 39.5 and 40.0 \u00b0C. The results indicate that a slower environmental change allows populations to grow and recover more efficiently when exposed to environmental extremes resulting in a higher likelihood for ER. Moreover, the evolutionary background has no significant effect on growth or the likelihood of ER, which emphasises the importance that the speed of environmental change has on adaptation. These results underline the importance of understanding how the speed of environmental change affects populations\u2019 genetic adaptation, and what kind of consequences climate change could have unless it is slowed down.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2020-05-15T05:45:23Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2020-05-15T05:45:23Z (GMT). No. of bitstreams: 0\n Previous issue date: 2020", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "29", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "evolutionary history", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "The speed of environmental change affects the likelihood of evolutionary rescue in Serratia marcescens", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202005153213", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ekologia ja evoluutiobiologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ecology and evolutionary biology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4011", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ilmastonmuutokset", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "bakteerit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "l\u00e4mp\u00f6tila", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sopeutuminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ymp\u00e4rist\u00f6nmuutokset", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evoluutiobiologia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evoluutio", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "climate changes", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "bacteria", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "temperature", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "adaptation (change)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "environmental changes", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evolutionary biology", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "evolution", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
|