Výsledky vyhledávání - "JE Valdez-Holguín"

Akademický článek

Seasonal and spatial characterization of the Gulf of California phytoplankton photosynthetic parameters

Autor: JE Valdez-Holguín, S Álvarez-Borrego, CC Trees

Publikováno v: Ciencias Marinas, Vol 25, Iss 4 (1999)

Photosynthesis-irradiance and phytoplankton absorption data from waters of the central Gulf of California, as well as data in the literature, were analyzed in order to propose working averages of the physiological parameters of phytoplankton to estim

Externí odkaz: https://doaj.org/article/40eefcb4e5c0456aa97dc4ded06b149e

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Akademický článek

Primary productivity in the Gulf of California, calculated from the relationship between superficial irradiance and chlorophyll in the euphotic zone

Autor: JE Valdez-Holguín, G Gaxiola-Castro, R Cervantes-Duarte

Publikováno v: Ciencias Marinas, Vol 21, Iss 3 (1995)

The vertical distribution of chlorophyll a in the Gulf of California during the spring of 1992 showed a subsurface maxima between 10 and 50 m of depth. The average surface chlorophyll concentration was 0.71 mg m–3. It was linearly related to the in

Externí odkaz: https://doaj.org/article/32be3a5182aa413dbcfb88a525bd0577

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Akademický článek

Daily variations of temperature, salinity, dissolved oxygen and chlorophyll a, in a hypersaline lagoon of the Gulf of California

Autor: JE Valdez-Holguín

Publikováno v: Ciencias Marinas, Vol 20, Iss 2 (1994)

Time series of temperature, salinity, dissolved oxygen and chlorophyll a were obtained during one year in La Cruz Lagoon, Sonora (Mexico), in order to know the processes that generate variability in the lagoon. Spectral analysis of these time series

Externí odkaz: https://doaj.org/article/3b1bb36ee8214eb1ab974fe46e5c6827

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Akademický článek

Relationship between surface chlorophyll and chlorophyll in the euphotic zone of the Gulf of California: possible application to estimate primary production with data obtained by remote sensors

Autor: R Cervantes-Duarte, G Gaxiola-Castro, JE Valdez-Holguín

Publikováno v: Ciencias Marinas, Vol 19, Iss 4 (1993)

The vertical distribution of pigments (chlorophyll a) in the study area showed maximum surface chlorophyll to the north of line 240, subsurface and deep chlorophyll maxima to the South of line 320 and both kinds of distribution between lines 240 and

Externí odkaz: https://doaj.org/article/84b4824c94814eaa9660282ff9a300ba

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