English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/11109
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Bathymetric distribution, biomass and growth dynamics of intertidal Phyllospadix scouleri and Phyllospadix torreyi in Baja California (Mexico)

AutorRamírez-García, Pedro; Lot, A.; Duarte, Carlos M. ; Terrados, Jorge ; Agawin, Nona S. R.
Palabras claveGrowth dynamics
Primary productivity
Seagrass
Phyllospadix
Baja California
Fecha de publicación12-nov-1998
EditorInter Research
CitaciónMarine Ecology Progress Series (MEPS) 173: 13-23 (1998)
ResumenThe bathymetric distribution, biomass, growth dynamics and production of surfgrass species in Baja California (NW Mexico) were examined. The maximum cover of Phyllospadix scouleri (16 ± 3.6%) was found between 40 and 50 cm below MLWL (mean low water level), whereas P. torreyi showed continuous cover (100%) at the lower intertidal (80 to 90 cm below MLWL). Both species showed similar seasonal patterns, with the lowest rate of production of new leaves and biomass observed in April, when the daytime exposure to air of the intertidal area studied was longest. The production of surfgrass was very high, exceeding 8000 g DW m-2 yr-1, and the rhizome elongation rate ranged from 0.24 to 0.58 mm d-1, resulting in an annual rhizome growth rate of about 8.6 cm yr-1. The growth and biomass of both species tended to decline with increasing exposure to air during day hours, but this decline was strongest for P. torreyi. The leaves of P. torreyi desiccated faster than those of P. scouleri when exposed to air, and the net photosynthesis rate of P. torreyi was more affected than that of P. scouleri after being exposed to air for similar lengths of time. The shoot size of P. torreyi was more affected than that of P. scouleri under the same regime of air exposure. These results suggest that P. torreyi is more sensitive to desiccation than P. scouleri, and point to both species as the most productive seagrass communities yet studied.
Descripción11 pages, 7 figures, 3 tables.
Versión del editorhttp://dx.doi.org/10.3354/meps173013
URIhttp://hdl.handle.net/10261/11109
DOI10.3354/meps173013
ISSN0171-8630 (Print)
1616-1599 (Online)
Aparece en las colecciones: (IMEDEA) Artículos
(CEAB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
m173p013.pdf1,08 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.