Lake phosphorus dynamics and climate warming: A mechanistic model approach

Malmaeus, Mikael; Blenckner, Thorsten; Markensten, Hampus; Persson, Irina

doi:10.1016/j.ecolmodel.2005.03.017

Cited by 88 publications

(43 citation statements)

References 36 publications

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“…Our results show that it is equally important to consider the trophic state of a lake when investigating the mechanisms underlying the effect of global warming on phytoplankton bloom formation. In view of future climate warming, further studies are needed to determine how climatic conditions influence the external and internal nutrient loading of lakes (e.g., Malmaeus et al 2006). Moreover, other anthropogenic interventions (such as land use and management changes), which influence the nutrient supply to lakes and rivers, must be taken into account to establish more realistic scenarios of freshwater ecosystems under anticipated climate change.…”

Section: Discussionmentioning

confidence: 99%

Phytoplankton response to climate warming modified by trophic state

Huber

Adrian

Gerten

2008

Limnology & Oceanography

113

104

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We investigated the combined effect of reduced phosphorus supply and warmer winter and spring conditions on the diatom spring bloom of a shallow lake. Simulations with a simple dynamic model indicated that reduced ice cover and increasing water temperatures resulted in a more intense and earlier bloom independently of phosphorous concentrations. However, whereas the collapse of the bloom was caused by silicate limitation under high phosphorus supply, it was caused by Daphnia grazing under reduced phosphorus supply. This switch from a bottom-up to a top-down driven collapse of the diatom spring bloom explains why, despite similarly mild winters, the bloom was observed earlier under high than under reduced phosphorus supply in the lake studied. Thus, an assessment of possible changes in nutrient loading is crucial when anticipating how phytoplankton could evolve under future climate warming.

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Section: Discussionmentioning

confidence: 99%

Phytoplankton response to climate warming modified by trophic state

Huber

Adrian

Gerten

2008

Limnology & Oceanography

113

104

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“…Taking into account the chlorophyll a vector, another ecological gradient becomes evident, with the eutrophic or hypertrophic lakes located in QI (moist and warm climates) while the (ultra)oligotrophic lakes are located in QII or QIII (cooler climates). High trophic levels in our data set seem to be at least partially related with climatic conditions, to warmer and moister climates where chemical weathering is intense and favors faster mobilization of chemical elements, including nutrients (N, P, Si) from the basement rocks into the lakes (Lewis, 1996;Malmaeus et al, 2006;Xia et al, 2015). It is interesting to note that in the PC1 vs. PC2 graph the lakes from opposite sides of the TMVB lie at adjacent quadrants (QIII and QIV) as they share high electric conductivities and total dissolved solids, associated to relatively dry climatic conditions.…”

Section: Climatic and Environmental Gradientsmentioning

confidence: 99%

Basic limnology of 30 continental waterbodies of the Transmexican Volcanic Belt across climatic and environmental gradients

Sigala¹,

Caballero²,

Correa‐Metrio³

et al. 2017

BSGM

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RESUMEN Empleando metodologías estandarizadas se estudiaron 30 cuerpos de agua en la Faja Volcánica Transmexicana a lo largo de un gradiente altitudinal (737 a 4283 msnm) y climatológico. Los lagos se incluyen en tres categorías: tectónicos (4), volcánicos (11 cráteres o maars, 7 represas volcánicas) y presas (8).]. In thirteen lakes, nutrient levels could be limiting primary productivity, mostly P, but also N and Si. Half of the lakes (16) were eutrophic or hypertrophic and most of these were also shallow (< 8 m) and correlated with warm, moist conditions. Ninety-seven taxa of aquatic organisms (phytoplankton, and surface sediment diatoms, testate amoebae, cladoceran and ostracodes) were reported, which could potentially be used as bioindicators. Principal component analysis (PCA) showed that temperature and precipitation were the main environmental gradients related to the lakes' limnological characteristics: colder climates related with lowest TDS (< 100 mg/L); dry climates with subsaline and hyposaline lakes, and warm-moist climates with eutrophic and hypertrophic lakes. Through the Procrustes technique we obtained indications that general geographic variables were important for some of the lakes, whereas the local factors were significant for others. It is through the knowledge of the basic limnology and biodiversity of Mexican lakes that more complex or detailed studies can be proposed leading to a better understanding, management, and conservation of water resources.

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“…Austria is also projected to experience the highest increase in flood risk among European countries (Alfieri et al, 2015). Consequently, lakes are at risk of climate-induced eutrophication (Moss, 2008), as rising air temperature increases the external and internal nutrient loading by accelerating the rate of mineralisation in catchment soils and in lakes (Malmaeus et al, 2006). Higher evapotranspiration may further increase the phosphorus concentration in lakes (Jeppesen et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Do current European lake monitoring programmes reliably estimate phytoplankton community changes?

Bergkemper

Weisse

2017

Hydrobiologia

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Many European lakes are monitored according to the EU Water Framework Directive (WFD), with focus on phytoplankton biomass and species composition. However, the low-frequency WFD monitoring may miss short-term phytoplankton changes. This is an important issue because short-term extreme meteorological events (heat waves and heavy rain) are predicted to increase in frequency and intensity with climate change. We used records from Lake Mondsee (Austria) from 2009 to 2015 to test if a reduction from monthly to seasonal sampling affected the average annual phytoplankton biovolume. Furthermore, we combined inverted light microscopy, FlowCAM and flow cytometry to estimate the effect of sampling during extreme events on average phytoplankton biovolume. Relative to monthly sampling, seasonal sampling significantly overestimated phytoplankton biomass. A heat wave in 2015 and two episodes of heavy rain in 2015 and 2016 caused species-specific changes; biovolumes of chlorophytes and the filamentous cyanobacterium Planktothrix rubescens (De Candolle ex Gomont) Anagnostidis & Komárek increased significantly during the heat wave. Using live material with FlowCAM and flow cytometry, we detected small and fragile cells and colonies that were either ignored or underrepresented by analysing fixed samples with light microscopy. We suggest a modified sampling and analysis strategy to capture short-term changes within the phytoplankton community.

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Lake phosphorus dynamics and climate warming: A mechanistic model approach

Cited by 88 publications

References 36 publications

Phytoplankton response to climate warming modified by trophic state

Phytoplankton response to climate warming modified by trophic state

Basic limnology of 30 continental waterbodies of the Transmexican Volcanic Belt across climatic and environmental gradients

Do current European lake monitoring programmes reliably estimate phytoplankton community changes?

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