High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales
We investigated the variability in the mesoscale distribution of the siphonophore Muggiaea atlantica and the hydromedusa Aglaura hemistoma in relation to the rapid spatial oscillations of the shelf-slope front off the Catalan coast (NW Mediterranean). Three extensive surveys were carried out in spri...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2016-12-01
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| Series: | Scientia Marina |
| Subjects: | |
| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1682 |
| _version_ | 1818864413058269184 |
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| author | Elena Guerrero Anna Marrodán Ana Sabatés Covadonga Orejas Josep Maria Gili |
| author_facet | Elena Guerrero Anna Marrodán Ana Sabatés Covadonga Orejas Josep Maria Gili |
| author_sort | Elena Guerrero |
| collection | DOAJ |
| description | We investigated the variability in the mesoscale distribution of the siphonophore Muggiaea atlantica and the hydromedusa Aglaura hemistoma in relation to the rapid spatial oscillations of the shelf-slope front off the Catalan coast (NW Mediterranean). Three extensive surveys were carried out in spring at ten-day intervals. High variability in the position of the front resulted from the advection of low-salinity waters originating in the Gulf of Lions, mainly from the Rhône River runoff. High spatial variability in the distribution of the two species was closely related to the shifting positions of the front. Both species occurred on its inshore side in much higher abundances than on its offshore side, where they were scarce or absent. The front acts as a barrier limiting offshore displacement of these two cnidarians. Statistical analyses showed that bottom depth and salinity, as independent variables, were indicators of the signature and position of the front, explaining most of the variance in the distribution and abundance of the two species. |
| first_indexed | 2024-12-19T10:31:15Z |
| format | Article |
| id | doaj.art-490dda5652e44292bc12c62c2519796f |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-19T10:31:15Z |
| publishDate | 2016-12-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-490dda5652e44292bc12c62c2519796f2022-12-21T20:25:45ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342016-12-0180448749710.3989/scimar.04452.03A1652High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scalesElena Guerrero0Anna Marrodán1Ana Sabatés2Covadonga Orejas3Josep Maria Gili4Institut de Ciències del Mar, CSICInstitut de Ciències del Mar, CSICInstitut de Ciències del Mar, CSICInstitut de Ciències del Mar, CSIC - Instituto Español de Oceanografía (IEO), Centro Oceanográfico de BalearesInstitut de Ciències del Mar, CSICWe investigated the variability in the mesoscale distribution of the siphonophore Muggiaea atlantica and the hydromedusa Aglaura hemistoma in relation to the rapid spatial oscillations of the shelf-slope front off the Catalan coast (NW Mediterranean). Three extensive surveys were carried out in spring at ten-day intervals. High variability in the position of the front resulted from the advection of low-salinity waters originating in the Gulf of Lions, mainly from the Rhône River runoff. High spatial variability in the distribution of the two species was closely related to the shifting positions of the front. Both species occurred on its inshore side in much higher abundances than on its offshore side, where they were scarce or absent. The front acts as a barrier limiting offshore displacement of these two cnidarians. Statistical analyses showed that bottom depth and salinity, as independent variables, were indicators of the signature and position of the front, explaining most of the variance in the distribution and abundance of the two species.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1682siphonophoraehydromedusaemuggiaea atlanticaaglaura hemistomamesoscalenw mediterranean |
| spellingShingle | Elena Guerrero Anna Marrodán Ana Sabatés Covadonga Orejas Josep Maria Gili High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales Scientia Marina siphonophorae hydromedusae muggiaea atlantica aglaura hemistoma mesoscale nw mediterranean |
| title | High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales |
| title_full | High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales |
| title_fullStr | High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales |
| title_full_unstemmed | High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales |
| title_short | High spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf-slope front at short time scales |
| title_sort | high spatial heterogeneity of two planktonic cnidarian species related to the variability of a shelf slope front at short time scales |
| topic | siphonophorae hydromedusae muggiaea atlantica aglaura hemistoma mesoscale nw mediterranean |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1682 |
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