| Rodrigo Riera,Juan Domingo Delgado,Myriam Rodríguez,Óscar Monterroso,Eva Ramos. 2012. Macrofaunal communities of threatened subtidal maërl seabeds on Tenerife (Canary Islands, north-east Atlantic Ocean) in summer. Acta Oceanologica Sinica, (1):98－105 |
| Macrofaunal communities of threatened subtidal maërl seabeds on Tenerife (Canary Islands, north-east Atlantic Ocean) in summer |
| Macrofaunal communities of threatened subtidal maërl seabeds on Tenerife (Canary Islands, north-east Atlantic Ocean) in summer |
| Received:October 09, 2010 Revised:April 18, 2011 |
| DOI：10.1007/s13131-012-0181-4 |
| Key words:Macrofauna Polychaetes Amphipods Molluscs soft-bottoms subtidal Tenerife Canary Islands |
| 中文关键词: Macrofauna Polychaetes Amphipods Molluscs soft-bottoms subtidal Tenerife Canary Islands |
| 基金项目: |
| Author Name | Affiliation | E-mail | | Rodrigo Riera | Centro de Investigaciones Medioambientales del Atlá
ntico(CIMA SL), C/Arzobispo Elí
as Yanes, 44, 38206 La Laguna, Tenerife, Canary Islands, Spain | rodrigo@cimacanarias.com | | Juan Domingo Delgado | Á
rea de Ecologí
a, Departamento de Sistemas Fí
sicos, Quí
micos y Naturales. Facultad de Ciencias Experimentales, Universidad Pablo de Olavide, Ctra. de Utrera km. 1, 41013 Sevilla, Spain | | | Myriam Rodríguez | Centro de Investigaciones Medioambientales del Atlá
ntico(CIMA SL), C/Arzobispo Elí
as Yanes, 44, 38206 La Laguna, Tenerife, Canary Islands, Spain | | | Óscar Monterroso | Centro de Investigaciones Medioambientales del Atlá
ntico(CIMA SL), C/Arzobispo Elí
as Yanes, 44, 38206 La Laguna, Tenerife, Canary Islands, Spain | | | Eva Ramos | Centro de Investigaciones Medioambientales del Atlá
ntico(CIMA SL), C/Arzobispo Elí
as Yanes, 44, 38206 La Laguna, Tenerife, Canary Islands, Spain | |
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| Abstract: |
| This study contributes with the first data on physical and taxonomical structure of macrofaunal assemblages of maërl beds from the Canary Islands. Maërl beds and Cymodocea nodosa meadows of the Canary Islands are considered biodiversity hot-spots in terms of taxonomic and functional biodiversity with a broad geographical and depth ranges. The authors have studied the structure of the macrofaunal assemblages on different habitat types (Cymodocea, Caulerpa, sabellid field, garden eel and maërl beds). Samples were taken at a range of depths between 14 and 46 m. Correlations were performed among abiotic variables (granulometry, organic matter, nitrogen and phosphates) and the most abundant taxa. Similarity analysis was performed to explore the patchiness of seabeds at a local scale. Significant differences were found in macrofaunal assemblages among seabed types, with highest abundances and lowest biodiversity in sabellid fields, where the sabellid Bispira viola dominated. The polychaetes Aponuphis bilineata and Chone filicauda and the mollusc Turritella brochii were the most abundant taxa on maërl beds. The mosaic of granulometric conditions would explain the associated macroinfaunal community structure and contribute to the creation of diversity on these relatively well preserved seabeds at a local scale. |
| 中文摘要: |
| This study contributes with the first data on physical and taxonomical structure of macrofaunal assemblages of maërl beds from the Canary Islands. Maërl beds and Cymodocea nodosa meadows of the Canary Islands are considered biodiversity hot-spots in terms of taxonomic and functional biodiversity with a broad geographical and depth ranges. The authors have studied the structure of the macrofaunal assemblages on different habitat types (Cymodocea, Caulerpa, sabellid field, garden eel and maërl beds). Samples were taken at a range of depths between 14 and 46 m. Correlations were performed among abiotic variables (granulometry, organic matter, nitrogen and phosphates) and the most abundant taxa. Similarity analysis was performed to explore the patchiness of seabeds at a local scale. Significant differences were found in macrofaunal assemblages among seabed types, with highest abundances and lowest biodiversity in sabellid fields, where the sabellid Bispira viola dominated. The polychaetes Aponuphis bilineata and Chone filicauda and the mollusc Turritella brochii were the most abundant taxa on maërl beds. The mosaic of granulometric conditions would explain the associated macroinfaunal community structure and contribute to the creation of diversity on these relatively well preserved seabeds at a local scale. |
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