Physical, chemical, and biological oceanographic data can be used to assess the state of an ecosystem and its variability in space and time. These data also provide a means to link organisms at higher trophic levels with this variability, which can significantly affect distribution, abundance, and ecology. Our research uses both remotely sensed oceanographic data and data collected at sea. We have collected oceanographic data in the eastern Pacific Ocean since 1986. A comprehensive review of oceanography in the eastern tropical Pacific Ocean was published in 2006. Long-term trends in the structure of the pycnocline in the eastern tropical and North Pacific were examined in a study published in 2013; these observed trends in the pycnocline, and future changes resulting from global climate change, may have important biological and ecosystem effects.
Fiedler, P. C., R. Mendelssohn, D. M. Palacios, and S. J. Bograd. 2013. Pycnocline variations in the eastern tropical and North Pacific, 1958–2008. Journal of Climate 26: 583-599.
Fiedler, P. C. and L. D. Talley. 2006. Hydrography of the eastern tropical Pacific: A review. Progress in Oceanography, 69(2-4):143-180.
Fiedler, P. C. 2002. Environmental change in the eastern tropical Pacific Ocean: Review of ENSO and decadal variability. Marine Ecology Progress Series, 244, 265-283.
Fiedler, P. C. 2002. The annual cycle and biological effects of the Costa Rica Dome. Deep-Sea Research I, 49, 321-338.
Spear, L.B., L.T. Ballance, and D.G. Ainley. 2001. Response of seabirds to thermal boundaries in the tropical Pacific: the thermocline versus the Equatorial Front. Marine Ecology Progress Series 219:275-289.
Ballance, L.T., R.L. Pitman and S.B. Reilly. 1997. Seabird community structure along a productivity gradient: importance of competition and energetic constraint. Ecology 78:1502-1518.
Fiedler, P. C. 1994. Seasonal and interannual variability of coastal zone color scanner phytoplankton pigments and winds in the eastern tropical Pacific. Journal of Geophysical Research, 99, 18,371-18,384.
Fiedler, P. C., F. P. Chavez, D. W. Behringer and S. B. Reilly. 1992. Physical and biological effects of Los Niсos in the eastern tropical Pacific, 1986-1989. Deep-Sea Research, 39, 199-219.
Fiedler, P. C., V. Philbrick and F. P. Chavez. 1991. Oceanic upwelling and productivity in the eastern tropical Pacific. Limnology and Oceanography, 36(8), 1834-1850.