New organic carbon in front of the Baja California Peninsula: time series and climatology

Authors

  • Benigno Hernández de la Torre Instituto Nacional de Ecología y Cambio Climático (INECC). Periférico Sur 5000, Colonia Insurgentes-Cuicuilco, Delegación Coyoacán, C.P. 04530, México, D.F.
  • Gilberto Gaxiola Castro Departamento de Oceanografía Biológica. División de Oceanología. Centro de Investigación Científica y de Educación Superior de Ensenada, CICESE, Carretera Ensenada-Tijuana, No. 3918, Zona Playitas, C.P. 22860, Ensenada, Baja California, México
  • Saúl Álvarez Borrego Departamento de Ecología. División de Oceanología. Centro de Investigación Científica y de Educación Superior de Ensenada, CICESE, Carretera Ensenada-Tijuana, No. 3918, Zona Playitas, CP. 22860, Ensenada, Baja California, México
  • Artemio Gallegos García Instituto de Ciencias del Mar y Limnología, UNAM, Circuito Exterior, Ciudad Universitaria, C.P. 04510, México, D.F.
  • Raúl Aguirre Gómez Instituto de Geografía, UNAM, Circuito Exterior, CU, CP 04510, México, D.F.

Keywords:

Baja California Peninsula, Coastal upwelling, new primary production, Pacific Ocean

Abstract

Time series of new phytoplankton production (Pnew) off Baja California from 1970 to 2008 computed using statistical models of temperature-nitrate relationship in ten groups of coastal and oceanic stations (Lines 90, 107, 120, 137 and 157) of the CalCOFI-IMECOCAL network, are presented. Pnew was calculated from the -ratio and total primary production (Ptotal). Spatially, the most productive areas of the region were Lines 90, 120 and 157. Pnew of lines 107 and 137 had relatively low values. These two lines marked the border between the northern and southern areas of the studied region. Seasonally, Pnew was high in the spring-summer transition, decreased in summer and autumn, and increased in winter. Pnew was related to coastal upwelling index, and we conclude that for an index of less than 200 m3/s/100 m, Pnew increases and its maximum occurs in phase with the coastal upwelling index. For an upwelling index greater than
200 m3/s/100 m Pnew decreases and both series are out of phase.

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How to Cite

Hernández de la Torre, B., Gaxiola Castro, G., Álvarez Borrego, S., Gallegos García, A., & Aguirre Gómez, R. (2016). New organic carbon in front of the Baja California Peninsula: time series and climatology. HIDROBIOLÓGICA, 25(1), 74–85. Retrieved from https://hidrobiologica.izt.uam.mx/hidrobiologica/index.php/revHidro/article/view/463

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