Competition for nutrients and light among phytoplankton species in a mixed water column: Theoretical studies

Huisman, Jef; Weissing, F.J.

doi:10.1016/0273-1223(95)00691-5

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…Light, which attenuates rapidly with depth, reached limiting values at the base of the metalimnion. The two essential resources for phytoplankton communities, light and nutrients, were thus vertically separated, structuring the vertical distribution of phytoplankton biomass in accordance with other studies (Huisman and Weissing 1995;Diehl 2002). Phytoplankton communities formed a thin layer, a DCM, at the optimal depth in terms of light and nutrient, as per the "algal game" (Klausmeier and Litchman 2001).…”

Section: Discussionsupporting

confidence: 84%

Recurrent internal waves in a small lake: Potential ecological consequences for metalimnetic phytoplankton populations

Pannard

Beisner

Bird

et al. 2011

Limn Fluids and Environments

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Worldwide, small lakes (, 1 km 2 ) are numerically dominant, yet the potential for interaction between physical and ecological processes therein has been largely ignored. High-frequency time series of the thermal and current structures in a small dimictic lake (Lake Bromont, Quebec) revealed the occurrence of recurrent internal waves during the summer of 2007. Amplitudes and frequencies of the internal wave modes were characterized, along with wind and stratification conditions, during two focal periods of 5 days at the beginning and the end of the summer. Owing to a resonance with the daily wind, the second and third vertical mode seiches dominated over the first mode, which was observed only during larger wind events. Although the lake is small (0.41 km 2 ) and shallow (mean depth of 4 m), the response of the thermal structure of the lake to wind forcing was very similar to that of alpine and other deep lakes. The phytoplankton community was controlled by the contrasting gradients of light and nutrients. Consequently, metalimnetic communities of cyanobacteria exposed to the recurrent internal waves, which occurred throughout the summer, formed the dominant phytoplankton biomass in the lake. The regular vertical excursion of the metalimnion influenced both light availability and nutrient fluxes and most likely contributed to an enhanced algal biomass.

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Section: Discussionsupporting

confidence: 84%

Recurrent internal waves in a small lake: Potential ecological consequences for metalimnetic phytoplankton populations

Pannard

Beisner

Bird

et al. 2011

Limn Fluids and Environments

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“…However, Chlorophyta was not visibly related to the algae community, as indicated by statistical tools. This might be caused by the impact of both external environmental factors and internal algae species (Huisman and Weissing 1995). The ratio of Chlorophyta and algae communities showed an increasing trend from August to March.…”

Section: Discussionmentioning

confidence: 99%

Chlorophyll ratio analysis of the responses of algae communities to light intensity in spring and summer in Lake Erhai

et al. 2015

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Algae biomass and community structure can reflect the current situation of a lake, especially in response to changes in light intensity. The relationship between chlorophyll a (Chl a) and chlorophyll b (Chl b) ratio and the proportion of Chlorophyta within the algae community were analyzed in this study. Results showed that light was more intense in August than in March. Algae density in August was greater than in March. The concentration of Chl a and b was influenced by light intensity level. In March, Microcystis and Kirchneriella sp dominated surface water, where the light intensity was over 216 lmol m -2 s -1 , Gloeocapsa, Dictyospaerium pulchellum, and Scenedesmus dominated intermediate water, where the light ranged from 36 to 216 lmol m -2 s -1 . Asterionella formosa Hassall and Mougeotia scalaris dominated near the bottom, where the light was below 36 lmol m -2 s -1 . In August, Microcystis and Selenastrum reinsch dominated surface water, where the light was above 18 lmol m -2 -s -1 . Chroococcus, Chlorella, and Scendesmus quadricauda dominated intermediate water, where light ranged from 90 to 180 lmol m -2 s -1 . Anabaena spirioides and Pediastrum simplex dominated bottom water, where the light was below 90 lmol m -2 s -1 . According to the mean value of Chlorophyta density and algae cell density in three different water levels, the ratio of Chlorophyta and algae community declined from March to August, ranging from 12. 35-21.41 to 4.28-11.19 %. The mean value ratio of Chl b and Chl a in three different water levels showed the same tendency from March to August, ranging from 18.05-21.77 to 15.15-17.44 %. These variations in chlorophyll ratio and Chlorophyta ratio indicated that the structure of the algae community structure was influenced by differences in light intensity.

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Light limitation helps stabilize the phytoplankton assemblage steady-state in a temperate and highly turbid, hypertrophic shallow lake (Laguna Chascomús, Argentina)

Iachetti

Llames

2014

Hydrobiologia

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Competition for nutrients and light among phytoplankton species in a mixed water column: Theoretical studies

Cited by 7 publications

References 8 publications

Recurrent internal waves in a small lake: Potential ecological consequences for metalimnetic phytoplankton populations

Recurrent internal waves in a small lake: Potential ecological consequences for metalimnetic phytoplankton populations

Chlorophyll ratio analysis of the responses of algae communities to light intensity in spring and summer in Lake Erhai

Light limitation helps stabilize the phytoplankton assemblage steady-state in a temperate and highly turbid, hypertrophic shallow lake (Laguna Chascomús, Argentina)

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