Published

2006-01-01

PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE

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Authors

  • GABRIEL A. PINILLA-A.
  • JOHN CH. DONATO-R.
  • CARLOS A. RIVERA-R.
Minimum (F0), maximum (Fm), and variable (Fv = Fm - F0) fluorescence and
photosynthetic efficiency (Fv/Fm) of phytoplankton were measured for several
depths and under laboratory conditions during two seasons (June and October of
2000) in Lake Guatavita, Colombia. When the lake was stratified (June) the surface
algae were photoinhibited and photosynthetic efficiency was very low, especially in
the hypolimnion. In October, when the lake was circulating, efficiency was higher
throughout the water column. Laboratory samples exhibited a gradual decline in
efficiency over time, but with higher values in October. Significant differences
between June and October samples were observed both in the laboratory and the
field. Except for hypolimnetic samples for June, there were no significant differences
between field observations and laboratory measures. When the lake was stratified,
the concentration of chlorophyll-a was high in the hypolimnion, but the efficiency
was low. During circulation, the concentration of chlorophyll-a was low but the
efficiency was higher. The results demonstrate that the photosynthetic efficiency
of the phytoplankton is independent of biomass and that in addition to biomass,
other factors, such as availability of nutrients and light could affect photosynthetic
efficiency.

How to Cite

APA

PINILLA-A., G. A., DONATO-R., J. C. and RIVERA-R., C. A. (2006). PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE. Caldasia, 28(1), 57–66. https://revistas.unal.edu.co/index.php/cal/article/view/39269

ACM

[1]
PINILLA-A., G.A., DONATO-R., J.C. and RIVERA-R., C.A. 2006. PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE. Caldasia. 28, 1 (Jan. 2006), 57–66.

ACS

(1)
PINILLA-A., G. A.; DONATO-R., J. C.; RIVERA-R., C. A. PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE. Caldasia 2006, 28, 57-66.

ABNT

PINILLA-A., G. A.; DONATO-R., J. C.; RIVERA-R., C. A. PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE. Caldasia, [S. l.], v. 28, n. 1, p. 57–66, 2006. Disponível em: https://revistas.unal.edu.co/index.php/cal/article/view/39269. Acesso em: 23 nov. 2024.

Chicago

PINILLA-A., GABRIEL A., JOHN CH. DONATO-R., and CARLOS A. RIVERA-R. 2006. “PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE”. Caldasia 28 (1):57-66. https://revistas.unal.edu.co/index.php/cal/article/view/39269.

Harvard

PINILLA-A., G. A., DONATO-R., J. C. and RIVERA-R., C. A. (2006) “PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE”, Caldasia, 28(1), pp. 57–66. Available at: https://revistas.unal.edu.co/index.php/cal/article/view/39269 (Accessed: 23 November 2024).

IEEE

[1]
G. A. PINILLA-A., J. C. DONATO-R., and C. A. RIVERA-R., “PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE”, Caldasia, vol. 28, no. 1, pp. 57–66, Jan. 2006.

MLA

PINILLA-A., G. A., J. C. DONATO-R., and C. A. RIVERA-R. “PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE”. Caldasia, vol. 28, no. 1, Jan. 2006, pp. 57-66, https://revistas.unal.edu.co/index.php/cal/article/view/39269.

Turabian

PINILLA-A., GABRIEL A., JOHN CH. DONATO-R., and CARLOS A. RIVERA-R. “PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE”. Caldasia 28, no. 1 (January 1, 2006): 57–66. Accessed November 23, 2024. https://revistas.unal.edu.co/index.php/cal/article/view/39269.

Vancouver

1.
PINILLA-A. GA, DONATO-R. JC, RIVERA-R. CA. PHOTOSYNTHETIC EFFICIENCY OF PHYTOPLANKTON IN A TROPICAL MOUNTAIN LAKE. Caldasia [Internet]. 2006 Jan. 1 [cited 2024 Nov. 23];28(1):57-66. Available from: https://revistas.unal.edu.co/index.php/cal/article/view/39269

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