Limiting Resources and the Regulation of Diversity in Phytoplankton Communities

Interlandi, Sebastian J.; Kilham, Susan S.

doi:10.1890/0012-9658(2001)082[1270:lratro]2.0.co;2

Cited by 163 publications

(94 citation statements)

References 42 publications

(57 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 may help to bring closure to two major hypotheses proposed in the 1970s to account for G. Evelyn Hutchinson's (28) Paradox of the Plankton. Both nonequilibrium (29) and equilibrium-based (30)(31)(32) mechanisms have been proposed to account for the patterns of species diversity that we observe in natural phytoplankton communities. We suggest here that ecosystem size may operate to constrain maximum potential species richness primarily through nonequilibrium mechanisms.…”

Section: Discussionmentioning

confidence: 98%

Phytoplankton species richness scales consistently from laboratory microcosms to the world's oceans

Smith

Foster

Grover

et al. 2005

Proc. Natl. Acad. Sci. U.S.A.

142

100

View full text Add to dashboard Cite

Species-area relationships have been observed for virtually all major groups of macroorganisms that have been studied to date but have not been explored for microscopic phytoplankton algae, which are the dominant producers in many freshwater and marine ecosystems. Our analyses of data from 142 different natural ponds, lakes, and oceans and 239 experimental ecosystems reveal a strong species-area relationship with an exponent that is invariant across ecosystems that span >15 orders of magnitude in spatial extent. A striking result is that the species-area relationship derived from small-scale experimental studies correctly scales up to natural aquatic ecosystems. These results significantly broaden our knowledge of the effects of island size on biodiversity and also confirm the relevance of experimentally derived data to the analysis and understanding of larger-scale ecological patterns. In addition, they confirm that patterns in microbial diversity are strongly consistent with those that have been repeatedly reported in the literature for macroorganisms.biodiversity ͉ island biogeography ͉ species-area ͉ scale-invariance

show abstract

Section: Discussionmentioning

confidence: 98%

Phytoplankton species richness scales consistently from laboratory microcosms to the world's oceans

Smith

Foster

Grover

et al. 2005

Proc. Natl. Acad. Sci. U.S.A.

142

100

View full text Add to dashboard Cite

show abstract

“…This was often done with phytoplankton (Flo¨der & Sommer, 1999;Huisman & Weissing, 1999;Interlandi & Kilham, 2001), most likely since resources are easily defined for phytoplankton. The interactions between freshwater zooplankters have also been investigated in some detail, especially the (competitive) interactions between members of one of the most obvious taxa in freshwater environments, the Cladocera (DeMott & Kerfoot, 1982;Matveev, 1983;Bengtsson, 1986;Vanni, 1986;Hessen, 1990;Boersma, 1995).…”

Section: Introductionmentioning

confidence: 99%

Differential Impacts of Copepods and Cladocerans on Lake Seston, and Resulting Effects on Zooplankton Growth

Becker

Feuchtmayr

Brepohl³

et al. 2004

Hydrobiologia

View full text Add to dashboard Cite

In an enclosure study in Scho¨hsee, a small mesotrophic lake in Northern Germany, the impact of copepods and daphniids on the seston community was studied. In general, these two guilds differ in their feeding behaviour. Copepods actively select their food, with a preference for larger particles, whereas most cladocerans are unselective filter-feeders. In this study we investigate how the impact of the two different grazers affects zooplankton growth. We combine results obtained in the laboratory with results measured in situ in the enclosures. Copepods and cladocerans were cultured on seston from enclosures that were inhabited by density gradients of copepods or daphniids. We observed that Daphnia grew faster on seston that was pre-handled by copepods than on seston that was pre-handled by daphniids, and that somatic growth decreased with increasing densities of daphniids in the enclosures. In contrast, we observed no differences in development rates for copepods grown on the different media. The population growth rates of Daphnia in the Daphnia treatments were determined in the enclosures. Growth differences in both somaticand population growth of Daphnia were correlated to food quality aspects of the seston. In the laboratory we found that Daphnia growth was correlated with several fatty acids. The strongest regression was with the concentration of 20:4x3 (r 2 ¼ 0.37). This particular fatty acid also showed the highest correlation with growth after normalisation of the fatty acids to the carbon content of the enclosures (r 2 ¼ 0.33). On the other hand, in the enclosure the population growth correlated most to the particulate nitrogen content (r 2 ¼ 0.78) and only to the N:C ratio, when normalised to carbon (r 2 ¼ 0.51).

show abstract

“…For example, the lowest diversity occurred when few resources were measured at limiting levels. Threshold levels of resources (below which growth is limited and above which there is saturation for the resource) appear to exist in the natural environment, and that diversity is regulated in part by absolute levels of resources available to phytoplankton in aquatic systems (Interlandi & Kilham, 2001). At the level of the entire metacommunity, algal biomass increased with the increasing phosphorus supply, whereas species richness and evenness decreased with increasing phosphorus supply (Hillebrand & Lehmpfuhl, 2011).…”

Section: Space Variation In Tendencies Of Sediment Phosphorus Releasementioning

confidence: 99%

Sediment–water interaction in phosphorus cycling as affected by trophic states in a Chinese shallow lake (Lake Donghu)

Chen

Hou

et al. 2016

Hydrobiologia

View full text Add to dashboard Cite

Lake sediment substantially accumulates nutrients, while little is known regarding the conditions under which it tends to be a sink or source of phosphorus. It is postulated that the above functions were largely dependent on trophic state. To test this hypothesis, composition, abundance, and size-spectrum of phytoplankton were studied in a Chinese shallow lake (Lake Donghu), together with concentrations and sorption behaviors of phosphorus in water column and sediment. Relationships among these variables were also examined by structural equation model. In the basins with the lowest phosphorus concentration, sediment was a phosphorus source as judged by equilibrium phosphorus concentration, directly affecting the abundance of phytoplankton with smaller size. Contrastingly, in the basins with the highest phosphorus concentration, sediment tended to uptake phosphorus, companied by the lowest ratio of nitrogen to phosphorus, diversity, and evenness of phytoplankton with the smaller size one dominating. Oscillatoria sp. was directly affected by ammonia and phosphorus. Moreover, with a balanced exchange of phosphorus between sediment and water column, phytoplankton increased markedly with the highest diversity and evenness in the basins having intermediate phosphorus concentration. Overall, trophic state modulated sediment functions to supply nutrient and was in turn greatly affected by the sediment in shallow lakes.

show abstract

Limiting Resources and the Regulation of Diversity in Phytoplankton Communities

Cited by 163 publications

References 42 publications

Phytoplankton species richness scales consistently from laboratory microcosms to the world's oceans

Phytoplankton species richness scales consistently from laboratory microcosms to the world's oceans

Differential Impacts of Copepods and Cladocerans on Lake Seston, and Resulting Effects on Zooplankton Growth

Sediment–water interaction in phosphorus cycling as affected by trophic states in a Chinese shallow lake (Lake Donghu)

Contact Info

Product

Resources

About