EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES
In field experiments the interactive effects of UVR and grazing on early life stages of a hard bottom algal community were studied. In a two-factorial design, experimental units (1. ambient radiation, >280 nm; 2. ambient minus UV-B, >320 nm; 3. ambient minus UVR, >400 nm vs. grazer - no gra...
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Universität Bremen
2007
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Online Access: | https://media.suub.uni-bremen.de/handle/elib/2385 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000107412 |
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/2385 2023-05-15T13:42:31+02:00 EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES Effekte der UV-Strahlung auf antarktische benthische Algen - mit Schwerpunkt auf junge Entwicklungsstadien und Gemeinschaften Zacher, Katharina Wiencke, Christian Hanelt, Dieter 2007-03-08 application/pdf https://media.suub.uni-bremen.de/handle/elib/2385 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000107412 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/2385 urn:nbn:de:gbv:46-diss000107412 info:eu-repo/semantics/openAccess Antarctica grazing macroalgae microlagae photosynthesis UV radiation 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2007 ftsubbremen 2022-11-09T07:09:48Z In field experiments the interactive effects of UVR and grazing on early life stages of a hard bottom algal community were studied. In a two-factorial design, experimental units (1. ambient radiation, >280 nm; 2. ambient minus UV-B, >320 nm; 3. ambient minus UVR, >400 nm vs. grazer - no grazer) were installed for 2.5 and 3.5 months in the field. In conclusion, the results showed that the ambient UVR do not seem to be a threat to benthic marine Antarctic diatoms while grazers acted as important drivers on the complete intertidal algal community structure. In contrast, UV-B radiation significantly shaped macroalgal diversity and species composition. Limpets could mediate negative effects of ambient UVR on species richness and diversity to a certain level. On the basis of these results we hypothesise that ambient UV-B radiation, and a potential further increase of these wavelengths has the ability to affect the zonation, composition and diversity of Antarctic intertidal macroalgae altering trophic interactions in this system. Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctica Antarktis* Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Antarctic |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Antarctica grazing macroalgae microlagae photosynthesis UV radiation 570 570 Life sciences biology ddc:570 |
spellingShingle |
Antarctica grazing macroalgae microlagae photosynthesis UV radiation 570 570 Life sciences biology ddc:570 Zacher, Katharina EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES |
topic_facet |
Antarctica grazing macroalgae microlagae photosynthesis UV radiation 570 570 Life sciences biology ddc:570 |
description |
In field experiments the interactive effects of UVR and grazing on early life stages of a hard bottom algal community were studied. In a two-factorial design, experimental units (1. ambient radiation, >280 nm; 2. ambient minus UV-B, >320 nm; 3. ambient minus UVR, >400 nm vs. grazer - no grazer) were installed for 2.5 and 3.5 months in the field. In conclusion, the results showed that the ambient UVR do not seem to be a threat to benthic marine Antarctic diatoms while grazers acted as important drivers on the complete intertidal algal community structure. In contrast, UV-B radiation significantly shaped macroalgal diversity and species composition. Limpets could mediate negative effects of ambient UVR on species richness and diversity to a certain level. On the basis of these results we hypothesise that ambient UV-B radiation, and a potential further increase of these wavelengths has the ability to affect the zonation, composition and diversity of Antarctic intertidal macroalgae altering trophic interactions in this system. |
author2 |
Wiencke, Christian Hanelt, Dieter |
format |
Doctoral or Postdoctoral Thesis |
author |
Zacher, Katharina |
author_facet |
Zacher, Katharina |
author_sort |
Zacher, Katharina |
title |
EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES |
title_short |
EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES |
title_full |
EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES |
title_fullStr |
EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES |
title_full_unstemmed |
EFFECTS OF UV RADIATION ON ANTARCTIC BENTHIC ALGAE - WITH EMPHASIS ON EARLY SUCCESSIONAL STAGES AND COMMUNITIES |
title_sort |
effects of uv radiation on antarctic benthic algae - with emphasis on early successional stages and communities |
publisher |
Universität Bremen |
publishDate |
2007 |
url |
https://media.suub.uni-bremen.de/handle/elib/2385 https://nbn-resolving.org/urn:nbn:de:gbv:46-diss000107412 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Antarktis* |
genre_facet |
Antarc* Antarctic Antarctica Antarktis* |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/2385 urn:nbn:de:gbv:46-diss000107412 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766168708447731712 |