Changes in shallow lake functioning: response to climate change and nutrient reduction

Carvalho, Laurence; Kirika, A.

doi:10.1023/b:hydr.0000008600.84544.0a

Cited by 108 publications

(88 citation statements)

References 12 publications

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“…This is in concurrence with the results of previous studies on the loch (Carvalho & Kirika, 2003;Elliott & May, 2008) and other experimental investigations . Furthermore, there was no evidence, either annually or seasonally, of temperature enhancing cyanobacteria abundance.…”

Section: Resultssupporting

confidence: 93%

“…DeStasio et al, 1996;Carvalho & Kirika, 2003;Winder & Schindler, 2004;Elliott et al, 2006;Elliott & May, 2008).…”

Section: Introductionunclassified

“…Loch Leven was chosen for this study because it is a well studied water body that has already shown signs of being influenced by climate change (Carvalho & Kirika, 2003). It is also an important generator of income to the local economy, with an estimated value of $US 2.4M ann -1 .…”

Section: Introductionmentioning

confidence: 99%

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Modelling the response of phytoplankton in a shallow lake (Loch Leven, UK) to changes in lake retention time and water temperature

Elliott

Defew

2011

Hydrobiologia

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Article (refereed) -postprint Elliott, J.A.; Defew, L.. 2012 Modelling the response of phytoplankton in a shallow lake (Loch Leven, UK) to changes in lake retention time and water temperature. Hydrobiologia, 681 (1). 105-116. 10.1007/s10750-011-0930-y Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner.1 TitleModelling the response of phytoplankton in a shallow lake (Loch Leven, UK) to changes in lake retention time and water temperature. Keywords:Phytoplankton, retention time, climate change, cyanobacteria, PROTECH This paper has not been submitted elsewhere in identical or similar form, nor will it be during the first three months after its submission to Hydrobiologia. 2 AbstractThe phytoplankton community of Loch Leven in 2005 was modelled and subjected to a combination of different flushing rates and water temperatures in order to assess the lake's sensitivity to these two climatic drivers. Whilst the simulated annual mean total chlorophyll a proved relatively insensitive to these changes, at the species level marked changes were recorded. Some species responded positively to increased temperature (e.g. Aulacoseira), some negatively (e.g. Asterionella), whilst others were negatively affected by increased flow (e.g. Aphanocapsa) and others enhanced (e.g.Stephanodiscus). However, this relationship with flow was season dependent with, for example, a simulated increase in summer inflows actually benefiting some species through increased nutrient supply, whereas an equivalent increase in flow in wetter seasons would have negatively affected those species (i.e. through flushing loss).Overall, the simulations showed that the range of species types simulated in the community was sufficient for one species to always benefit from the changing niches created by the multiple climatic drivers applied in this study. The level of exploitation by such a species was only constrained by the nutrient carrying capacity of the system, which led to the overall dampened response in the total chlorophyll a measure, both at the annual and season scale. Thus, whilst overall biomass showed relatively little reaction to the two climatic drivers tested, the phytoplankton community composition responded markedly.

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Section: Resultssupporting

confidence: 93%

“…DeStasio et al, 1996;Carvalho & Kirika, 2003;Winder & Schindler, 2004;Elliott et al, 2006;Elliott & May, 2008).…”

Section: Introductionunclassified

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Modelling the response of phytoplankton in a shallow lake (Loch Leven, UK) to changes in lake retention time and water temperature

Elliott

Defew

2011

Hydrobiologia

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“…Shallow lakes are expected to be particularly influenced by climate warming (Baulch et al 2005;Carvalho and Kirika 2003;Gyllstrom et al 2005;Moss et al 2003). The fact that the global distribution of lakes is dominated by millions of small water bodies (Downing et al 2006) suggests that the response observed in this experiment to warming may be important to carbon cycling on a global scale.…”

Section: Discussionmentioning

confidence: 87%

Experimental warming increases CO2 saturation in a shallow prairie pond

Flanagan¹,

McCauley

2010

Aquat Ecol

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There is an urgent need to understand the effect of climate warming on the carbon dynamics of lakes and ponds in order to assess contributions to global carbon budgets. Currently, we are unable to predict how the exchange of carbon gases (i.e. CO 2 ) across the air-water boundary and organic carbon storage in the sediments will be altered with realistic warming scenarios downscaled from climatic models. Given the prevalence of shallow systems and tight atmospheric coupling, we conducted a mesocosm experiment to test the impacts of warming on CO 2 saturation in a shallow prairie pond. We outline and test three possible scenarios for the effect of warming on the CO 2 saturation of ponds, resulting in either an increase, decrease or no net effect for CO 2 saturation. We show that with approximately a two-degree (8C) increase in average water temperature, the pCO 2 of the warmed mesocosms was nine times greater than the ambient temperature mesocosms by the end of the 5-week experiment. Changes in water colour (a measure of dissolved organic carbon) in warmed systems indicate that decomposition of organic matter in the sediments and water column was the main contributor to the increase in pCO 2 in the warmed mesocosms. Our results show that with warming, the release of CO 2 from shallow ponds to the atmosphere will increase and carbon storage in the sediments will decrease, altering the current functioning of shallow prairie ponds and influencing the contribution of ponds to the global carbon cycle.

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“…In the subtropical part of China, the past half century has also seen pronounced warming (Hu et al, 2003). The strongest temperature increases are often observed in winter and spring (Sha et al, 2002;Carvalho and Kirika, 2003), perhaps induced by large-scale meteorological phenomena such as the North Atlantic Oscillation (NAO) or the Arctic Oscillation (AO) (Gong et al, 2004;Blenckner et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton response to winter warming modified by large-bodied zooplankton: an experimental microcosm study

He¹,

Zhu

Song³

et al. 2015

J Limnol

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Changes in shallow lake functioning: response to climate change and nutrient reduction

Cited by 108 publications

References 12 publications

Modelling the response of phytoplankton in a shallow lake (Loch Leven, UK) to changes in lake retention time and water temperature

Modelling the response of phytoplankton in a shallow lake (Loch Leven, UK) to changes in lake retention time and water temperature

Experimental warming increases CO2 saturation in a shallow prairie pond

Phytoplankton response to winter warming modified by large-bodied zooplankton: an experimental microcosm study

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