Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/1429
Título: Planktonic primary production and microbial respiration measured by C-14 assimilation and dissolved oxygen changes in coastal waters of the Antarctic Peninsula during austral summer: Implications for carbon flux studies
Autores/as: Aristegui, J. 
Montero del Pino, María F. 
Ballesteros Rodríguez, Salomé
Basterretxea Oyarzabal, Gotzon
Lenning, Kornelis van
Clasificación UNESCO: 251001 Oceanografía biológica
Palabras clave: Biología
Productividad primaria
Regiones antárticas
Respiración microbiana
Primary production, et al.
Fecha de publicación: 1996
Publicación seriada: Marine Ecology - Progress Series 
Resumen: Oxygen consumption and production and carbon fixation by micro-organisms were measured simultaneously in coastal surface waters near the Antarctic Peninsula. Although there was a good qualitative agreement between the oxygen and carbon measurements, total daily water-column integrated carbon incorporation measured by radiocarbon uptake in the particulate fraction underestimated net community production measured by the oxygen method by 29 to 54% (using a photosynthetic quotient of 1.5). Unaccounted-for exudation of dissolved organic carbon during the 14C uptake experiments may explain this discrepancy. Respiratory carbon losses by micro-organisms (largely phytoplankton) ranged between 10 and 50% of gross production, the highest values corresponding to the more productive stations. These estimates are, however, slightly conservative, since they refer to the upper 30 m of the water column, corresponding approximately to the euphotic zone in this region. Our results show that microbial respiration is an important part of the carbon flux of coastal Antarctic plankton. Unless it is considered in carbon flux models, the contribution of higher trophic levels to the carbon fluxes in marine food webs may be seriously overestimated.
URI: http://hdl.handle.net/10553/1429
ISSN: 0171-8630
DOI: 10.3354/meps132191
Fuente: Marine Ecology Progress Series [ISSN 0171-8630], v. 132 (1-3), p. 191-201
Colección:Artículos
miniatura
Adobe PDF (2,05 MB)
Vista completa

Citas SCOPUSTM   

48
actualizado el 24-mar-2024

Citas de WEB OF SCIENCETM
Citations

45
actualizado el 25-feb-2024

Visitas

105
actualizado el 17-mar-2024

Descargas

162
actualizado el 17-mar-2024

Google ScholarTM

Verifica

Altmetric


Comparte



Exporta metadatos



Los elementos en ULPGC accedaCRIS están protegidos por derechos de autor con todos los derechos reservados, a menos que se indique lo contrario.