This study of the ecosystem in the hot springs in the Kr\u00edsuv\u00edk area is the third biota assessment carried out within the Framework Program, but the first two dealt with the ecosystem in the hot springs in the Hengill area and in the Torfaj\u00f6kull area.<\/p>\n\n\n\n
Emphasis was placed on the thermal area in Selt\u00fan, where sampling was joint with the geochemists of the Institute of Earth Sciences, which was the first step in an interdisciplinary approach to the subject, which is hoped for, but is still in its early stages. Other areas that were tried to explore were hot springs by Austurengjahver and the area by Gunnuhver in Reykjanes. The temperature in the hot springs in Selt\u00fan was in the range of 53-93 \u00b0 C and furthermore one soil sample was reported which was taken at a lower temperature or 34 \u00b0 C. The acidity of the hot springs in Selt\u00fan was in the range of pH 2.5-6. The temperature in the hot springs at Austurengjahver was between 50-75 \u00b0 C and the pH pH 2.4 - 4.3. The temperature in the hot springs at Gunnuhver was measured in the range of 70-90 \u00b0 C and the pH pH 3.8 - 4.2. A total of thirteen samples were taken in the above areas and DNA was successfully isolated from seven of them. DNA could not be extracted from the samples at Austurengjahver. Nucleic acid amplification of the 16S rRNA, a species-differentiating gene of the nuclear nucleus, was performed on six samples. Amplification was obtained from all these samples with specific real bacterial indicators, but three with ancient bacterial indicators.<\/p>\n\n\n\n
A total of 304 sequences of real bacterial species were obtained in the area known as Selt\u00fan. These species are spread over 26 species which in turn are spread over 10 camps. The primitive species of the Aquificeae array house over 80% sequences and are therefore predominant in these samples and are primary producers in the ecosystems of the hot springs. Five species within this array were found in the samples from Selt\u00fan. Other species are mainly classified into different groups Proteobacteria (13%) but they are a very diverse group. Other species found are sparsely populated and less important here. A total of 81 sequences of ancient bacterial species were obtained from the Selt\u00fan area. Most of them or space 90% are classified as Thermoplasmatales within the Euryarchaeota class, but this is a heat and acid species. Other ancient bacteria in the samples in Selt\u00fan belong to the Chrenarchaeota group, mostly to the genus Desulfurococcales.<\/p>\n\n\n\n
A total of 56 actual bacterial differentiations were obtained from the hot springs at Gunnuhver. The vast majority of them (about 70%) belong to the primitive class Aquificeae, but about 30% to different groups of Proteobacteria. The ancient bacteria in Gunnuhver are homogeneous as they are all of the genus Sulfolobales which is a very heat and acid group. 1 Overall, it can be said that the area around Selt\u00fan shows a typical pattern of a peripheral ecosystem where one species is predominant and other species are spread over various factions. The calculated biodiversity in the samples was relatively low or in the range of 1.0-2.0. For comparison, the same coefficient calculated for samples from the Torfaj\u00f6kull area and at \u00d6lkelduh\u00e1ls was in the range of 1.1-4.7. The environmental conditions of temperature and acidity in Selt\u00fan and Gunnuhver are not on the edge, but it is likely that substances and compounds in the hot springs and clay can affect the diversity of the ecosystem, ie. which species get thrive and which do not.<\/p>\n\n\n\n
Rare species that had only distant relatives in Genbank were found in the Selt\u00fan samples, among others. In most cases, however, there are only 1-2 representatives of the species in question. Most of these distantly related species were classified as Proteobacteria and Acidobacteria.<\/p>\n\n\n\n
Mat\u00eds - Prokaria will probably continue to work on sampling and species analysis in the Kr\u00edsuv\u00edk area. The intention is to include these results in a final summary of the ecosystem in hot springs in Iceland in the last year of the Framework Program.<\/p>","protected":false},"excerpt":{"rendered":"
L\u00edfr\u00edki \u00ed hverum \u00ed Kr\u00edsuv\u00edk og Gunnuhver \u00e1 Reykjanesi: Ranns\u00f3kn unnin vegna Ramma\u00e1\u00e6tlunar um n\u00fdtingu \u00e1 jar\u00f0varma \u00e1 h\u00e1hitasv\u00e6\u00f0um \u00deessi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[15],"tags":[1695,1747,1342,1918,1919,1920,1037,1845,52,1247,1566,1921,1922],"class_list":["post-32679","post","type-post","status-publish","format-standard","hentry","category-skyrsla","tag-16s-rrna","tag-dna","tag-hahitasvaedi","tag-hverasvaedi","tag-hverir","tag-jardvarmi","tag-lifriki","tag-lifriki-i-hverum","tag-nyting","tag-radgreining","tag-rannsokn","tag-synataka","tag-tegundagreining"],"acf":[],"yoast_head":"\n