The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula
Abstract: The near shore environments of the western Antarctic Peninsula (WAP) harbor extremely high densities of mesograzers (small invertebrate predators approximately 1-25 mm in length) such as benthic amphipods, as well as rich assemblages of macroalgae, endophytes, and macroinvertebrates. Unlik...
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IEDA: US Antarctic Program Data Center
2011
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dataone:http://get.iedadata.org/metadata/iso/600096 2024-06-03T18:46:24+00:00 The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula Baker, Bill BEGINDATE: 2009-09-01T00:00:00Z ENDDATE: 2013-08-31T00:00:00Z 2011-01-01T00:00:00Z http://get.iedadata.org/metadata/iso/600096 unknown IEDA: US Antarctic Program Data Center Algae Antarctic Organisms and Ecosystems Biology Antarctica Southern Ocean Biosphere Oceans Antarctic Peninsula US Antarctic Program Data Center (USAP-DC) Dataset 2011 dataone:urn:node:IEDA_USAP 2024-06-03T18:11:58Z Abstract: The near shore environments of the western Antarctic Peninsula (WAP) harbor extremely high densities of mesograzers (small invertebrate predators approximately 1-25 mm in length) such as benthic amphipods, as well as rich assemblages of macroalgae, endophytes, and macroinvertebrates. Unlike temperate and tropical shallow marine environments, where fish and sea urchins are key grazers structuring the community, mesograzers appear to be much more important in the WAP. Accordingly, the proposed research has two main objectives: (1) To further investigate the interactions between the ecologically dominant large macrophytes, filamentous epi/endophytes, and mesograzers and (2) To determine the nature of interactions between mesograzers and sessile invertebrates. Specifically, the research will examine the following hypotheses: 1: The effects of endophytes on macrophytes are often negative, and consequently macrophytes defend against endophytic infection. 2: Mesoherbivores prevent filamentous algal species, common in the intertidal, from dominating subtidal assemblages. 3: Mesograzer predation pressure on sessile benthic macroinvertebrates, primarily sponges and tunicates, is greatest in shallow habitats dominated by macrophytes, and this impacts depth distributions of macroinvertebrate species. 4: Benthic macroinvertebrates may defend against mesograzers with secondary metabolites which effect molting and/or deter feeding. Broader impacts include involvement of undergraduates, including minorities, in research; training of graduate students, and continuation of the highly successful UAB IN ANTARCTICA interactive web program (two time recipient of awards of excellence from the US Council for Advancement and Support of Education). The researchers also will share their scientific endeavors with teachers, K-12 students, and other members of the community at large while in residence in Antarctica. In addition, the investigators will request the participation of a PolarTREC teacher. Dataset Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean IEDA: US Antarctic Program Data Center (via DataONE) Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
institution |
Open Polar |
collection |
IEDA: US Antarctic Program Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:IEDA_USAP |
language |
unknown |
topic |
Algae Antarctic Organisms and Ecosystems Biology Antarctica Southern Ocean Biosphere Oceans Antarctic Peninsula US Antarctic Program Data Center (USAP-DC) |
spellingShingle |
Algae Antarctic Organisms and Ecosystems Biology Antarctica Southern Ocean Biosphere Oceans Antarctic Peninsula US Antarctic Program Data Center (USAP-DC) Baker, Bill The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula |
topic_facet |
Algae Antarctic Organisms and Ecosystems Biology Antarctica Southern Ocean Biosphere Oceans Antarctic Peninsula US Antarctic Program Data Center (USAP-DC) |
description |
Abstract: The near shore environments of the western Antarctic Peninsula (WAP) harbor extremely high densities of mesograzers (small invertebrate predators approximately 1-25 mm in length) such as benthic amphipods, as well as rich assemblages of macroalgae, endophytes, and macroinvertebrates. Unlike temperate and tropical shallow marine environments, where fish and sea urchins are key grazers structuring the community, mesograzers appear to be much more important in the WAP. Accordingly, the proposed research has two main objectives: (1) To further investigate the interactions between the ecologically dominant large macrophytes, filamentous epi/endophytes, and mesograzers and (2) To determine the nature of interactions between mesograzers and sessile invertebrates. Specifically, the research will examine the following hypotheses: 1: The effects of endophytes on macrophytes are often negative, and consequently macrophytes defend against endophytic infection. 2: Mesoherbivores prevent filamentous algal species, common in the intertidal, from dominating subtidal assemblages. 3: Mesograzer predation pressure on sessile benthic macroinvertebrates, primarily sponges and tunicates, is greatest in shallow habitats dominated by macrophytes, and this impacts depth distributions of macroinvertebrate species. 4: Benthic macroinvertebrates may defend against mesograzers with secondary metabolites which effect molting and/or deter feeding. Broader impacts include involvement of undergraduates, including minorities, in research; training of graduate students, and continuation of the highly successful UAB IN ANTARCTICA interactive web program (two time recipient of awards of excellence from the US Council for Advancement and Support of Education). The researchers also will share their scientific endeavors with teachers, K-12 students, and other members of the community at large while in residence in Antarctica. In addition, the investigators will request the participation of a PolarTREC teacher. |
format |
Dataset |
author |
Baker, Bill |
author_facet |
Baker, Bill |
author_sort |
Baker, Bill |
title |
The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula |
title_short |
The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula |
title_full |
The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula |
title_fullStr |
The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula |
title_full_unstemmed |
The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula |
title_sort |
chemical ecology of shallow-water marine macroalgae and invertebrates on the antarctic peninsula |
publisher |
IEDA: US Antarctic Program Data Center |
publishDate |
2011 |
url |
http://get.iedadata.org/metadata/iso/600096 |
op_coverage |
BEGINDATE: 2009-09-01T00:00:00Z ENDDATE: 2013-08-31T00:00:00Z |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean |
_version_ |
1800873708816957440 |