Multiscale Experiments in Coastal Ecology: Improving Realism and Advancing Theory

Petersen, James; Kemp, W. Michael; Bartleson, Rick; Boynton, Walter R.; Chen, Chung-Chi; Cornwell, Jeffrey C.; Gardner, Robert H.; Hinkle, Deborah C.; Houde, Edward D.; Malone, Thomas C.; Mowitt, William R.; Murray, Laura; Sanford, Lawrence P.; Stevenson, Jan; Sundberg, Karen; Suttles, Steven E.

doi:10.1641/0006-3568(2003)053[1181:meicei]2.0.co;2

Cited by 84 publications

(47 citation statements)

References 40 publications

(35 reference statements)

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“…It is an open question as to whether natural microcosms serve as direct analogs of other ecological systems, but they can serve as scaled analogs [39,42]. This approach, in which rates are scaled to system size, offers considerable promise.…”

Section: The Case For Natural Microcosmsmentioning

confidence: 99%

“…This approach, in which rates are scaled to system size, offers considerable promise. For example, marine ecologists have derived empirical relationships that relate productivity to mesocosm size, which, when extrapolated to the scale of coastal systems, still provide remarkably good predictions [39]. Natural microcosms show additional, but untapped, promise for screening potential hypotheses before researchers commit resources to experiments in larger, slower systems (such as forests or lakes).…”

Section: The Case For Natural Microcosmsmentioning

confidence: 99%

“…Second, most taxa in natural microcosms have short generation times. Once dispersal and disturbances are scaled by generation times, there might be little difference in their frequency or intensity between natural microcosms and any other system, including larger systems [39]. Spatial effects could be similarly scaled by body size of the organisms involved.…”

Section: Microcosms: Why Go Natural?mentioning

confidence: 99%

See 2 more Smart Citations

Are natural microcosms useful model systems for ecology?

Srivastava

Kolasa

Bengtsson

et al. 2004

Trends in Ecology & Evolution

349

261

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Section: The Case For Natural Microcosmsmentioning

confidence: 99%

Section: The Case For Natural Microcosmsmentioning

confidence: 99%

Section: Microcosms: Why Go Natural?mentioning

confidence: 99%

See 1 more Smart Citation

Are natural microcosms useful model systems for ecology?

Srivastava

Kolasa

Bengtsson

et al. 2004

Trends in Ecology & Evolution

349

261

View full text Add to dashboard Cite

“…Experiments using mesocosms allow the use of large volumes of seawater containing whole communities of plankton with significant control over the environmental conditions (Kemp et al 2001, Petersen et al 2003. Prior mesocosm experiments conducted in Rimouski (Mousseau et al 2000, Chatila et al 2001 examined the influence of UV-B radiation but the temperature, effect was not assessed.…”

Section: Introductionmentioning

confidence: 99%

Combined effects of increased UV-B and temperature on the pigment-determined marine phytoplankton community of the St. Lawrence Estuary

Lionard¹,

Roy²,

Tremblay-Létourneau³

et al. 2012

Mar. Ecol. Prog. Ser.

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The combined effects of increased UV-B and temperature on natural marine phytoplankton from the St. Lawrence Estuary (Canada) were examined in an 8 d mesocosm experiment carried out in Rimouski (Québec, Canada) in August 2008. We tested the hypothesis that increased temperature (+ 3°C) will offset algal growth suppression by UV-B (78% UV-B increase) using duplicate mesocosm experiments containing natural phytoplankton assemblages. The response of the entire phytoplankton community, in terms of HPLC pigment-based phytoplankton bio mass, community composition (CHEMTAX), xanthophyll cycles photoprotection and quantum yield of photosystem II (the ratio of variable to maximum fluorescence: F v /F m ), showed a significant influence of temperature (negative on small phytoplanktonic cells, < 5 µm, and positive on larger diatoms) but only after the peak of the diatom bloom, when nutrients became limited. Interactions between temperature and UV-B treatments were significant only for small cells during post-bloom; UV-B induced an increase in phytoplankton biomass at the normal temperature but had no effect at warmer temperatures. Enhancing UV-B delayed the bloom slightly under the normal temperature and spread it over a longer period of time, with no sign of major cellular damage. Our re sults do not support the tested hypothesis, and they suggest that temperature plays a greater role than UV-B radiation in structuring phytoplankton communities, possibly favouring diatoms rather than small cells in a warmer climate scenario. Other effects such as grazing or coastal eutrophication should be considered in future studies.

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“…The effect of the addition could be seen during all 40 d of the experiment, but it was only within the first 8 d that significant predictions could be made. The analysis of individual time points (2, 4 and 8 d after addition) showed a too high resolution to describe the response, indicating that the response has to be measured at more than one time point, in order to achieve a suitable grain and extent of the temporal scale (Petersen et al 2003). The time series analysis (40 d span) of single solute fluxes (e.g all nitrate fluxes after addition) could not be used for predictive purposes, which most likely is due to the coupled reaction, where the different solutes are linked to one another, a relationship which then is not reflected if only one solute is analyzed on its own.…”

Section: Discussionmentioning

confidence: 99%

Biogeochemical response of an intact coastal sediment to organic matter input: a multivariate approach

Karle¹,

Hall²,

Dahllöf³

2007

Mar. Ecol. Prog. Ser.

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We tested the effect of additions of organic matter of different quality (C:N ratio) and quantity on benthic fluxes of ammonium, nitrate, silicate, oxygen and dissolved inorganic carbon (DIC). Additions were made to intact sediment boxes, according to a 2-level factorial design, and the magnitude and temporal scale of the response were evaluated with Partial Least Square (PLS) regression analysis. Response patterns were followed over a 40 d period following the addition, but only fluxes of ammonium, nitrate, silicate and oxygen for the first 2 d after addition, and nitrate fluxes for the first 8 d after addition, could be used for predictive modelling. The results showed that the response of the microbial community to different qualities and quantities of organic matter may initially be related to its capacity to sequester organic matter, and in the long term, to its growth in response to the respective nutritional supply. The results also suggest that such an experimental approach can be a useful tool for classification of areas with potential risk of eutrophication.

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Multiscale Experiments in Coastal Ecology: Improving Realism and Advancing Theory

Cited by 84 publications

References 40 publications

Are natural microcosms useful model systems for ecology?

Are natural microcosms useful model systems for ecology?

Combined effects of increased UV-B and temperature on the pigment-determined marine phytoplankton community of the St. Lawrence Estuary

Biogeochemical response of an intact coastal sediment to organic matter input: a multivariate approach

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