The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores
This thesis investigated the ability of marine phytoplankton (especially coccolithophores) to utilize organic nutrients and the influence of CO2-induced changes of environmental conditions like a decreased ratio of inorganic to organic nutrients on a phytoplankton community.A North Atlantic phytopla...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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Universität Bremen
2008
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/2494 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000110088 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2494 2023-05-15T17:31:19+02:00 The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores Die Nutzbarbeit organischer Nährstoffe durch marine Phytoplankter mit dem Schwerpunkt Coccolithophoriden Benner, Ina Wolf-Gladrow, Dieter Smetacek, Victor 2008-05-23 application/pdf https://media.suub.uni-bremen.de/handle/elib/2494 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000110088 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/2494 urn:nbn:de:gbv:46-diss000110088 info:eu-repo/semantics/openAccess coccolithophore organic nutrients North Atlantic phytoplankton CO2 temperature calcification urease Emiliania huxleyi Coccolithus pelagicus Calcidiscus leptoporus diatoms dinoflagellates 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2008 ftsubbremen 2022-11-09T07:09:49Z This thesis investigated the ability of marine phytoplankton (especially coccolithophores) to utilize organic nutrients and the influence of CO2-induced changes of environmental conditions like a decreased ratio of inorganic to organic nutrients on a phytoplankton community.A North Atlantic phytoplankton assemblage showed no effect on the composition of the assemblage under a changed ratio of inorganic to organic nutrients, but some diatom genera preferred inorganic or organic nutrients. The ability of genera to utilize organic nutrients indicates a competitive advantage of these genera compared to inorganic nutrient preferring genera when organic nutrients are available.Three coccolithophores were grown on seven different organic nutrient compounds to investigate if the utilization of organic nutrient compounds is species-specific. All three coccolithophores were able to utilize a range of different organic nutrients, but two species did not grow on some organic nutrients. This disability could indicate their dependence on nitrate and phosphate and lead to a competitive advantage over other species which are able to utilize these organic nutrients.The results of this thesis are a further step to understand the utilizability and importance of organic nutrients in the ocean. Species which are not able to utilize organic nutrients may be nitrogen or phosphorus limited under a decreased inorganic to organic nutrient ratio. These limitations may affect silicification and calcification and therefore change biogeochemical cycles. Doctoral or Postdoctoral Thesis North Atlantic Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
coccolithophore organic nutrients North Atlantic phytoplankton CO2 temperature calcification urease Emiliania huxleyi Coccolithus pelagicus Calcidiscus leptoporus diatoms dinoflagellates 570 570 Life sciences biology ddc:570 |
spellingShingle |
coccolithophore organic nutrients North Atlantic phytoplankton CO2 temperature calcification urease Emiliania huxleyi Coccolithus pelagicus Calcidiscus leptoporus diatoms dinoflagellates 570 570 Life sciences biology ddc:570 Benner, Ina The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores |
topic_facet |
coccolithophore organic nutrients North Atlantic phytoplankton CO2 temperature calcification urease Emiliania huxleyi Coccolithus pelagicus Calcidiscus leptoporus diatoms dinoflagellates 570 570 Life sciences biology ddc:570 |
description |
This thesis investigated the ability of marine phytoplankton (especially coccolithophores) to utilize organic nutrients and the influence of CO2-induced changes of environmental conditions like a decreased ratio of inorganic to organic nutrients on a phytoplankton community.A North Atlantic phytoplankton assemblage showed no effect on the composition of the assemblage under a changed ratio of inorganic to organic nutrients, but some diatom genera preferred inorganic or organic nutrients. The ability of genera to utilize organic nutrients indicates a competitive advantage of these genera compared to inorganic nutrient preferring genera when organic nutrients are available.Three coccolithophores were grown on seven different organic nutrient compounds to investigate if the utilization of organic nutrient compounds is species-specific. All three coccolithophores were able to utilize a range of different organic nutrients, but two species did not grow on some organic nutrients. This disability could indicate their dependence on nitrate and phosphate and lead to a competitive advantage over other species which are able to utilize these organic nutrients.The results of this thesis are a further step to understand the utilizability and importance of organic nutrients in the ocean. Species which are not able to utilize organic nutrients may be nitrogen or phosphorus limited under a decreased inorganic to organic nutrient ratio. These limitations may affect silicification and calcification and therefore change biogeochemical cycles. |
author2 |
Wolf-Gladrow, Dieter Smetacek, Victor |
format |
Doctoral or Postdoctoral Thesis |
author |
Benner, Ina |
author_facet |
Benner, Ina |
author_sort |
Benner, Ina |
title |
The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores |
title_short |
The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores |
title_full |
The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores |
title_fullStr |
The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores |
title_full_unstemmed |
The utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores |
title_sort |
utilization of organic nutrients in marine phytoplankton with emphasis on coccolithophores |
publisher |
Universität Bremen |
publishDate |
2008 |
url |
https://media.suub.uni-bremen.de/handle/elib/2494 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000110088 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/2494 urn:nbn:de:gbv:46-diss000110088 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766128814456307712 |