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| Format: | Artículo científico |
| Language: | en |
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Universidad Autónoma de Baja California
1996
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| Online Access: | https://www.redalyc.org/articulo.oa?id=48022206 |
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Table of Contents:
- Efecto de la marea en la productividad orgánica primaria en una laguna costera del canal de ballenas, Golfo de California Hector Bustos Serrano Roberto Millan Niñez Ramón Cajal Medrano Ciencias de la Tierra nutrients advection photosynthetic quotient organic primary productivity Phytoplankton organic primary productivity (POP) and nutrient time series were generated in acoastal lagoon of the Gulf of California from 6 to 12 August 1986 to estimate the influente ofBallenas Channel during spring and neap tides. Otean water temperature and salinity varied from 26to 30°C and from 35.54 to 35.63%0, respectively. Oxygen was unsaturated at 85% in more than 70%of the data collected. Values of supersaturated oxygen were obtained during daylight hours only,which increased during neap tides due to the conditioning of the phytoplankton, resuhing in greaterphotosynthesis. It can be inferred from the marked unsaturation that this is an area of high oxygen consumption and CO1 production. The nutrients (nitrate, phosphate and silicate), chlorophyll a andPOP show high values, similar to coastal lagoons of the Pacific coast of Baja California in upwellingconditions. POP maximums were as high as 80 mgCmh in neap tides. It is deduced fiom the calculatedphotosynthetic quotient (PQ) and POP that photosynthesis is supported mainly by nitrates.Based on the C method, the assimilation ratio varied from 10 to 25 mgCmgChia~h. These valuesare close to the theoretical maximums reported; however, the assimilation ratio using the oxygenmethod and PQ = 1.25 varied from 1.6 to 35.6 mgCmgChlah and, with the calculated PQ, it variedfrom 1.0 to 7.2 mgCmgChla~h. It is also deduced that this coastal lagoon is greatly influenced bythe nutrient concentrations (mainly nitrate and silicate) from Ballenas Channel during spring tides.There is also an important increment of POP during neap tides. 1996 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48022206 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.2 Vol.22