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| 2. |
- Beckman, Jenny
(författare)
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Amatörbotanikens 1900-tal
- 2007
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Ingår i: Svensk botanisk tidskrift. - 0039-646X. ; 101:1, s. 55-64
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Tidskriftsartikel (refereegranskat)abstract
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| 3. |
- Björn, Lars Olof, et al.
(författare)
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Dinoflagellater : Hopplock från livets smörgåsbord
- 2005
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Ingår i: Svensk Botanisk Tidskrift. - 0039-646X. ; 99:1, s. 7-16
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Tidskriftsartikel (refereegranskat)abstract
- The dinoflagellates constitute a group within the protistan supergroup Alveolata, and can be referred neither to the plant nor the animal kingdom. They swim about using two flagella and are able to orient using various stimuli. About half the living dinoflagellate species are capable of oxygenic photosynthesis, but most of them complement this with capture of prey. Some live ebtirely by capturing small organisms, others are parasites. Some species are able to emit light. The group has a long evolutionary history, and almost as many extinct species as extant ones have been described. Most remarkable is the way the photosynthetically potent dinoflagellates have aquiered their chloroplasts by endosymbiosis with photosynthetic organisms from many different groups. In some cases repeated endosymbiontic events have taken place.
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| 4. |
- Björn, Lars Olof, et al.
(författare)
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Dinoflagellater – hopplock från livets smörgåsbord [Dinoflagellates – collections from the smorgasbord of the living world]
- 2005
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Ingår i: Svensk Botanisk Tidskrift. - 0039-646X. ; 99, s. 7-16
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- The dinoflagellates constitute a group within the protistan supergroup Alveolata, and can be referred neither to the plant nor the animal kingdom. They swim about using two flagella and orient using various stimuli. About half of the species are capable of oxygenic photosynthesis, but most of them complement this with capture of prey. Some live entirely by capturing small organisms, others are parasites. Some species are able to emit light. The group has a long evolutionary history, and almost as many extinct species as extant ones have been described. Remarkable is the way the photosynthetically potent dinoflagellates have acquired their chloroplasts by endosymbiosis with photosynthetic organisms from many different groups. In some cases repeated endosymbiotic events have taken place.
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| 5. |
- Björn, Lars Olof, et al.
(författare)
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Fotosyntesprocessens evolution
- 2008
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Ingår i: Svensk Botanisk Tidskrift. - 0039-646X. ; 102:6, s. 297-305
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Fotosyntesen är växternas fantastiska och för oss livgivande metod att med hjälp av energin i solljuset omvandla luftens koldioxid till växtbiomassa och syre. Men många lägre organismer har en fotosyntes som inte producerar nŒgot syre, medan åter andra organismer kan binda koldioxid med hjälp av någon annan energikälla än solljuset. Lars Olof Björn och Jan Bergström reder ut begreppen.
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| 6. |
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| 7. |
- Björn, Lars Olof, et al.
(författare)
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Koraller och dinoflagellater — ett marint partnerskap
- 2006
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Ingår i: Svensk Botanisk Tidskrift. - 0039-646X. ; 100:4, s. 263-270
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Most reef-building corals live in partnership with so-called zooxanthellae in a mutually dependent way. Zooxanthellae are unicellular algae (dinoflagellates) inside the coral polyps, and by their photosynthesis they contribute to the sustenance of the coral. Corals already existed during the Cambrian period, more than 500 million years ago, bu these were very different from today's reef-building species. The scleractinians or stony star corals, the main structural component in modern reefs, did not appear until after the great end-Permian extinction 261 million years ago. The dinoflagellate genus Symbiodinium, which forms the symbiosis with the corals, also stems from this time. The coral reefs of the world, the marine ecosystems with the highest biological diversity, are now endangered due to coastal "development", oil spills and other local pollution, acidification due to atmospheric carbon dioxide increase, and climate change.
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| 8. |
- Björn, Lars-Olof, et al.
(författare)
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Koraller och zooxantheller : ett marint partnerskap
- 2006
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Ingår i: Svensk botanisk tidskrift. - 0039-646X. ; 100:4, s. 263-270
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Tidskriftsartikel (refereegranskat)abstract
- De flesta revbildande koraller lever i ett ömsesidigt beroende med så kallade zooxanteller, encelliga alger som lever inuti koralldjuret och som med hjälp av sin fotosyntes bidrar till försörjningen.
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