The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir
13 pages, 6 figures 1. The near-surface distribution of phytoplankton cells along the thalweg of a canyon-shaped reservoir (El Gergal, southern Spain) during two surveys is described and interpreted as the result of time-varying large-scale circulation patterns, vertical mixing processes and the phy...
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Language: | English |
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Blackwell Publishing
2010
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Online Access: | http://hdl.handle.net/10261/75348 https://doi.org/10.1111/j.1365-2427.2010.02428.x |
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ftcsic:oai:digital.csic.es:10261/75348 2024-02-11T10:03:22+01:00 The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir Vidal, Javier Moreno-Ostos, Enrique Escot, Carmelo Quesada, R. Rueda, Francisco J. 2010-09 http://hdl.handle.net/10261/75348 https://doi.org/10.1111/j.1365-2427.2010.02428.x en eng Blackwell Publishing https://doi.org/10.1111/j.1365-2427.2010.02428.x doi:10.1111/j.1365-2427.2010.02428.x issn: 0046-5070 e-issn: 1365-2427 Freshwater Biology 55(9): 1945-1957 (2010) http://hdl.handle.net/10261/75348 none Circulation Distribution Mixing Phytoplankton Reservoirs artículo http://purl.org/coar/resource_type/c_6501 2010 ftcsic https://doi.org/10.1111/j.1365-2427.2010.02428.x 2024-01-16T09:49:03Z 13 pages, 6 figures 1. The near-surface distribution of phytoplankton cells along the thalweg of a canyon-shaped reservoir (El Gergal, southern Spain) during two surveys is described and interpreted as the result of time-varying large-scale circulation patterns, vertical mixing processes and the physiological capacity of algal cells to regulate its position in the water column. 2. Vertical gradients of chlorophyll-a concentration developed in the water column during the day but disappeared at night, as a result of the shoaling and deepening of the diurnal mixed layer (dml). The changes in the depth of the dml are largely controlled in El Gergal by convectively driven mixing processes. The longitudinal circulation changes, in turn, as a result of weak and diurnal land-sea breezes. The distribution of algal cells was patchy at all times but did not change during any of the surveys. 3. An expression is proposed to estimate time scales for the development of horizontal patchiness TP based on simple concepts of transport. It is shown that TP is in the order of a week, indicating that horizontal patchiness does not respond immediately to hourly changes in the controlling factors. The magnitude of TP, though, depends on how the vertical distribution of chlorophyll-a and longitudinal currents change on subdiurnal time scales. In particular, TP is sensitive to the lag existing between the momentum and heat fluxes through the free surface, driving circulation and vertical mixing The research was funded by Ministerio de Ciencia e Innovación (project CGL2005-04070/HID) Peer Reviewed Article in Journal/Newspaper DML Digital.CSIC (Spanish National Research Council) Freshwater Biology 55 9 1945 1957 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Circulation Distribution Mixing Phytoplankton Reservoirs |
spellingShingle |
Circulation Distribution Mixing Phytoplankton Reservoirs Vidal, Javier Moreno-Ostos, Enrique Escot, Carmelo Quesada, R. Rueda, Francisco J. The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir |
topic_facet |
Circulation Distribution Mixing Phytoplankton Reservoirs |
description |
13 pages, 6 figures 1. The near-surface distribution of phytoplankton cells along the thalweg of a canyon-shaped reservoir (El Gergal, southern Spain) during two surveys is described and interpreted as the result of time-varying large-scale circulation patterns, vertical mixing processes and the physiological capacity of algal cells to regulate its position in the water column. 2. Vertical gradients of chlorophyll-a concentration developed in the water column during the day but disappeared at night, as a result of the shoaling and deepening of the diurnal mixed layer (dml). The changes in the depth of the dml are largely controlled in El Gergal by convectively driven mixing processes. The longitudinal circulation changes, in turn, as a result of weak and diurnal land-sea breezes. The distribution of algal cells was patchy at all times but did not change during any of the surveys. 3. An expression is proposed to estimate time scales for the development of horizontal patchiness TP based on simple concepts of transport. It is shown that TP is in the order of a week, indicating that horizontal patchiness does not respond immediately to hourly changes in the controlling factors. The magnitude of TP, though, depends on how the vertical distribution of chlorophyll-a and longitudinal currents change on subdiurnal time scales. In particular, TP is sensitive to the lag existing between the momentum and heat fluxes through the free surface, driving circulation and vertical mixing The research was funded by Ministerio de Ciencia e Innovación (project CGL2005-04070/HID) Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Vidal, Javier Moreno-Ostos, Enrique Escot, Carmelo Quesada, R. Rueda, Francisco J. |
author_facet |
Vidal, Javier Moreno-Ostos, Enrique Escot, Carmelo Quesada, R. Rueda, Francisco J. |
author_sort |
Vidal, Javier |
title |
The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir |
title_short |
The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir |
title_full |
The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir |
title_fullStr |
The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir |
title_full_unstemmed |
The effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped Mediterranean reservoir |
title_sort |
effects of diel changes in circulation and mixing on the longitudinal distribution of phytoplankton in a canyon-shaped mediterranean reservoir |
publisher |
Blackwell Publishing |
publishDate |
2010 |
url |
http://hdl.handle.net/10261/75348 https://doi.org/10.1111/j.1365-2427.2010.02428.x |
genre |
DML |
genre_facet |
DML |
op_relation |
https://doi.org/10.1111/j.1365-2427.2010.02428.x doi:10.1111/j.1365-2427.2010.02428.x issn: 0046-5070 e-issn: 1365-2427 Freshwater Biology 55(9): 1945-1957 (2010) http://hdl.handle.net/10261/75348 |
op_rights |
none |
op_doi |
https://doi.org/10.1111/j.1365-2427.2010.02428.x |
container_title |
Freshwater Biology |
container_volume |
55 |
container_issue |
9 |
container_start_page |
1945 |
op_container_end_page |
1957 |
_version_ |
1790599592748777472 |