Nutrient dynamics and phytoplankton resource limitation in a deep tropical mountain lake

Jessica R. Corman, Emily Carlson, Margaret Dix, Nancy Girón, Amber Roegner, Jana Veselá, Sudeep Chandra, James Elser, Eliška Rejmánková

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Managing lake eutrophication requires a clear understanding of resource limitation of primary productivity, yet historically research on this subject has focused on temperate lakes. In 2010, we quantified several metrics of resource limitation in Lake Atitlán, Guatemala, Central America's deepest tropical mountain lake that has recently experienced extensive phytoplankton blooms. In contrast to many temperate lakes, Lake Atitlán did not show a relationship between total phosphorus (TP) and chlorophyll a (Chl-a) concentrations. Average molar ratios of total nitrogen (TN) to TP decreased from 16.4 to 4.5 between stratified and mixing conditions. During our monitoring period, Tropical Storm Agatha landed on Guatemala, washing in sediment from the watershed, and concentrations of P temporarily increased in the lake by >60%. Initial experimental bioassays indicated phytoplankton growth was colimited by N and P prior to the storm, whereas post-storm assays suggested limitation by P and trace elements. Compared to previous years, Limnoraphis robusta, an N-fixing cyanobacterium, increased in abundance earlier in the year; however, there was no bloom event during our sampling period. Experimental studies indicated that nitrogenase activity was limited by P and iron availability while light was secondarily limiting of overall phytoplankton growth. This study illustrates the potential for baseline nutrient and phytoplankton growth dynamics to substantially differ for tropical lake systems from conventionally studied temperate lakes and the potential for "pulse" events (e.g., tropical storms) to alter those dynamics.

Original languageEnglish (US)
Pages (from-to)371-386
Number of pages16
JournalInland Waters
Volume5
Issue number4
DOIs
StatePublished - 2015

Fingerprint

nutrient dynamics
phytoplankton
mountains
lakes
mountain
lake
nutrients
resource
Guatemala
algal bloom
phosphorus
light availability
nitrogenase
Central America
algal blooms
transposons
washing
eutrophication
trace elements
primary productivity

Keywords

  • Lake Atitlán
  • Nutrient cycling
  • Nutrient limitation
  • Phytoplankton
  • Tropical montane lake
  • Tropical storm

ASJC Scopus subject areas

  • Aquatic Science
  • Water Science and Technology

Cite this

Corman, J. R., Carlson, E., Dix, M., Girón, N., Roegner, A., Veselá, J., ... Rejmánková, E. (2015). Nutrient dynamics and phytoplankton resource limitation in a deep tropical mountain lake. Inland Waters, 5(4), 371-386. https://doi.org/10.5268/IW-5.4.843

Nutrient dynamics and phytoplankton resource limitation in a deep tropical mountain lake. / Corman, Jessica R.; Carlson, Emily; Dix, Margaret; Girón, Nancy; Roegner, Amber; Veselá, Jana; Chandra, Sudeep; Elser, James; Rejmánková, Eliška.

In: Inland Waters, Vol. 5, No. 4, 2015, p. 371-386.

Research output: Contribution to journalArticle

Corman, JR, Carlson, E, Dix, M, Girón, N, Roegner, A, Veselá, J, Chandra, S, Elser, J & Rejmánková, E 2015, 'Nutrient dynamics and phytoplankton resource limitation in a deep tropical mountain lake', Inland Waters, vol. 5, no. 4, pp. 371-386. https://doi.org/10.5268/IW-5.4.843
Corman JR, Carlson E, Dix M, Girón N, Roegner A, Veselá J et al. Nutrient dynamics and phytoplankton resource limitation in a deep tropical mountain lake. Inland Waters. 2015;5(4):371-386. https://doi.org/10.5268/IW-5.4.843
Corman, Jessica R. ; Carlson, Emily ; Dix, Margaret ; Girón, Nancy ; Roegner, Amber ; Veselá, Jana ; Chandra, Sudeep ; Elser, James ; Rejmánková, Eliška. / Nutrient dynamics and phytoplankton resource limitation in a deep tropical mountain lake. In: Inland Waters. 2015 ; Vol. 5, No. 4. pp. 371-386.
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