Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach
The carbon isotopic signature (delta(13)C) of dissolved inorganic carbon and food web components was examined in two high mountain lakes. Rio Seco Lake is partially surrounded by alpine meadows and has temporal inlets, whereas La Caldera Lake is located on rocky terrain and does not receive inputs f...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00691387 https://doi.org/10.1139/F05-169 |
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ftccsdartic:oai:HAL:hal-00691387v1 2023-05-15T15:43:51+02:00 Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach Pulido-Villena, Elvira Reche, I Morales-Baquero, R Universidad de Granada (UGR) 2005 https://hal.archives-ouvertes.fr/hal-00691387 https://doi.org/10.1139/F05-169 en eng HAL CCSD NRC Research Press info:eu-repo/semantics/altIdentifier/doi/10.1139/F05-169 hal-00691387 https://hal.archives-ouvertes.fr/hal-00691387 doi:10.1139/F05-169 ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.archives-ouvertes.fr/hal-00691387 Canadian Journal of Fisheries and Aquatic Sciences, NRC Research Press, 2005, 62, pp.2640-2648. ⟨10.1139/F05-169⟩ DISSOLVED ORGANIC-MATTER FRESH-WATER ECOSYSTEMS GROWTH-RATE INORGANIC CARBON OLIGOTROPHIC LAKE CO2 CONCENTRATION BERING-SEA LOCH-NESS PHYTOPLANKTON FRACTIONATION [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2005 ftccsdartic https://doi.org/10.1139/F05-169 2021-11-14T00:55:16Z The carbon isotopic signature (delta(13)C) of dissolved inorganic carbon and food web components was examined in two high mountain lakes. Rio Seco Lake is partially surrounded by alpine meadows and has temporal inlets, whereas La Caldera Lake is located on rocky terrain and does not receive inputs from runoff. We assessed whether these contrasting catchments involve differences in the isotopic signature of the food web components and then in the reliance on terrestrial carbon. The delta(13)C of dissolved inorganic carbon was not significantly different between lakes and reflected an atmospheric gas exchange origin. Unexpectedly, bulk particulate organic matter showed enriched delta(13)C values in both lakes, suggesting a terrestrial vegetation influence. Bulk particulate organic matter was exploited mostly by the cladoceran Daphnia pulicaria, whereas the copepod Mixodiaptomus laciniatus was C-13 depleted relative to particulate organic matter, indicating a selective feeding on an isotopically lighter source, likely phytoplankton. The results obtained show that, despite contrasting catchments, the food web of both lakes might be partially supported by terrestrial carbon for which utilization is species specific. Article in Journal/Newspaper Bering Sea Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Bering Sea Canadian Journal of Fisheries and Aquatic Sciences 62 11 2640 2648 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
DISSOLVED ORGANIC-MATTER FRESH-WATER ECOSYSTEMS GROWTH-RATE INORGANIC CARBON OLIGOTROPHIC LAKE CO2 CONCENTRATION BERING-SEA LOCH-NESS PHYTOPLANKTON FRACTIONATION [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
DISSOLVED ORGANIC-MATTER FRESH-WATER ECOSYSTEMS GROWTH-RATE INORGANIC CARBON OLIGOTROPHIC LAKE CO2 CONCENTRATION BERING-SEA LOCH-NESS PHYTOPLANKTON FRACTIONATION [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes Pulido-Villena, Elvira Reche, I Morales-Baquero, R Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach |
topic_facet |
DISSOLVED ORGANIC-MATTER FRESH-WATER ECOSYSTEMS GROWTH-RATE INORGANIC CARBON OLIGOTROPHIC LAKE CO2 CONCENTRATION BERING-SEA LOCH-NESS PHYTOPLANKTON FRACTIONATION [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes |
description |
The carbon isotopic signature (delta(13)C) of dissolved inorganic carbon and food web components was examined in two high mountain lakes. Rio Seco Lake is partially surrounded by alpine meadows and has temporal inlets, whereas La Caldera Lake is located on rocky terrain and does not receive inputs from runoff. We assessed whether these contrasting catchments involve differences in the isotopic signature of the food web components and then in the reliance on terrestrial carbon. The delta(13)C of dissolved inorganic carbon was not significantly different between lakes and reflected an atmospheric gas exchange origin. Unexpectedly, bulk particulate organic matter showed enriched delta(13)C values in both lakes, suggesting a terrestrial vegetation influence. Bulk particulate organic matter was exploited mostly by the cladoceran Daphnia pulicaria, whereas the copepod Mixodiaptomus laciniatus was C-13 depleted relative to particulate organic matter, indicating a selective feeding on an isotopically lighter source, likely phytoplankton. The results obtained show that, despite contrasting catchments, the food web of both lakes might be partially supported by terrestrial carbon for which utilization is species specific. |
author2 |
Universidad de Granada (UGR) |
format |
Article in Journal/Newspaper |
author |
Pulido-Villena, Elvira Reche, I Morales-Baquero, R |
author_facet |
Pulido-Villena, Elvira Reche, I Morales-Baquero, R |
author_sort |
Pulido-Villena, Elvira |
title |
Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach |
title_short |
Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach |
title_full |
Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach |
title_fullStr |
Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach |
title_full_unstemmed |
Food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach |
title_sort |
food web reliance on allochthonous carbon in two high mountain lakes with contrasting catchments: a stable isotope approach |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.archives-ouvertes.fr/hal-00691387 https://doi.org/10.1139/F05-169 |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_source |
ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.archives-ouvertes.fr/hal-00691387 Canadian Journal of Fisheries and Aquatic Sciences, NRC Research Press, 2005, 62, pp.2640-2648. ⟨10.1139/F05-169⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1139/F05-169 hal-00691387 https://hal.archives-ouvertes.fr/hal-00691387 doi:10.1139/F05-169 |
op_doi |
https://doi.org/10.1139/F05-169 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
62 |
container_issue |
11 |
container_start_page |
2640 |
op_container_end_page |
2648 |
_version_ |
1766378056948121600 |