Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species
The Arctic pelagic food web is characterized by a high seasonality in terms of light and therefore primary production. To cope with the long winter periods of low food availability, many species have developed the ability to store large amounts of lipid reserves. These high-energy compounds are of m...
Main Author: | |
---|---|
Format: | Thesis |
Language: | unknown |
Published: |
2017
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/52691/ https://epic.awi.de/id/eprint/52691/1/Thesis_LBoissonnot-2017.pdf https://hdl.handle.net/10013/epic.5b3e7051-87fc-4028-80e8-ba4a1f517f83 |
id |
ftawi:oai:epic.awi.de:52691 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:52691 2024-09-15T17:50:37+00:00 Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species Boissonnot, Lauris 2017-05-23 application/pdf https://epic.awi.de/id/eprint/52691/ https://epic.awi.de/id/eprint/52691/1/Thesis_LBoissonnot-2017.pdf https://hdl.handle.net/10013/epic.5b3e7051-87fc-4028-80e8-ba4a1f517f83 unknown https://epic.awi.de/id/eprint/52691/1/Thesis_LBoissonnot-2017.pdf Boissonnot, L. (2017) Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species , PhD thesis, hdl:10013/epic.5b3e7051-87fc-4028-80e8-ba4a1f517f83 EPIC3169 p. Thesis notRev 2017 ftawi 2024-06-24T04:24:41Z The Arctic pelagic food web is characterized by a high seasonality in terms of light and therefore primary production. To cope with the long winter periods of low food availability, many species have developed the ability to store large amounts of lipid reserves. These high-energy compounds are of major importance in different processes such as somatic growth, survival, development, reproduction and metabolism independently on ambient food levels. In the Arctic pelagic food web, zooplankton plays a crucial role linking primary production and higher trophic levels. The effciency of zooplankton species to transfer lipids and fatty acids in the food web depends on a combination of ecological and physiological aspects such as distribution, life cycle strategies, lipid content and lipid assimilation rapidity. In the context of climate warming, severe shifts in the phyto- and zooplankton communities, and thus changes in trophic interactions, are expected. It is therefore essential to better understand the lipid and fatty acid turnover in the in the lipid-driven Arctic food web. This study aims at evaluating the role of zooplankton in the transfer of lipids from primary producers to higher trophic levels. It combines field observations and experimental work to fill the gaps of knowledge in the ecology and lipid biochemistry of Arctic zooplankton key species, i.e. the copepods Calanus glacialis, Pseudocalanus minutus and Oithona similis, the thecosome pteropods Limacina helicina and L. retroversa and the gymnosome pteropod Clione limacina. The life cycle and the distribution of thecosome pteropods were investigated by field observations that were conducted year-round in 2012 and 2013 in Svalbard waters. These studies aimed at relating the distribution of L. helicina and L. retroversa to environmental parameters and examining the growth of veligers and juveniles. To study the metabolic capacities of key zooplankton species in terms of lipid and fatty acid turnover, feeding experiments were conducted with animals that ... Thesis Arctic Calanus glacialis Clione limacina Limacina helicina Pseudocalanus minutus Svalbard Zooplankton Copepods Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The Arctic pelagic food web is characterized by a high seasonality in terms of light and therefore primary production. To cope with the long winter periods of low food availability, many species have developed the ability to store large amounts of lipid reserves. These high-energy compounds are of major importance in different processes such as somatic growth, survival, development, reproduction and metabolism independently on ambient food levels. In the Arctic pelagic food web, zooplankton plays a crucial role linking primary production and higher trophic levels. The effciency of zooplankton species to transfer lipids and fatty acids in the food web depends on a combination of ecological and physiological aspects such as distribution, life cycle strategies, lipid content and lipid assimilation rapidity. In the context of climate warming, severe shifts in the phyto- and zooplankton communities, and thus changes in trophic interactions, are expected. It is therefore essential to better understand the lipid and fatty acid turnover in the in the lipid-driven Arctic food web. This study aims at evaluating the role of zooplankton in the transfer of lipids from primary producers to higher trophic levels. It combines field observations and experimental work to fill the gaps of knowledge in the ecology and lipid biochemistry of Arctic zooplankton key species, i.e. the copepods Calanus glacialis, Pseudocalanus minutus and Oithona similis, the thecosome pteropods Limacina helicina and L. retroversa and the gymnosome pteropod Clione limacina. The life cycle and the distribution of thecosome pteropods were investigated by field observations that were conducted year-round in 2012 and 2013 in Svalbard waters. These studies aimed at relating the distribution of L. helicina and L. retroversa to environmental parameters and examining the growth of veligers and juveniles. To study the metabolic capacities of key zooplankton species in terms of lipid and fatty acid turnover, feeding experiments were conducted with animals that ... |
format |
Thesis |
author |
Boissonnot, Lauris |
spellingShingle |
Boissonnot, Lauris Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species |
author_facet |
Boissonnot, Lauris |
author_sort |
Boissonnot, Lauris |
title |
Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species |
title_short |
Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species |
title_full |
Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species |
title_fullStr |
Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species |
title_full_unstemmed |
Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species |
title_sort |
turnover of trophic markers and lipid carbon in arctic marine food webs -- the contribution of key zooplankton species |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/52691/ https://epic.awi.de/id/eprint/52691/1/Thesis_LBoissonnot-2017.pdf https://hdl.handle.net/10013/epic.5b3e7051-87fc-4028-80e8-ba4a1f517f83 |
genre |
Arctic Calanus glacialis Clione limacina Limacina helicina Pseudocalanus minutus Svalbard Zooplankton Copepods |
genre_facet |
Arctic Calanus glacialis Clione limacina Limacina helicina Pseudocalanus minutus Svalbard Zooplankton Copepods |
op_source |
EPIC3169 p. |
op_relation |
https://epic.awi.de/id/eprint/52691/1/Thesis_LBoissonnot-2017.pdf Boissonnot, L. (2017) Turnover of trophic markers and lipid carbon in Arctic marine food webs -- The contribution of key zooplankton species , PhD thesis, hdl:10013/epic.5b3e7051-87fc-4028-80e8-ba4a1f517f83 |
_version_ |
1810292432843046912 |