Stratification strength and light climate explain variation in chlorophyll <scp><i>a</i></scp> at the continental scale in a European multilake survey in a heatwave summer

Donis, Daphné; Mantzouki, Evanthia; Mcginnis, Daniel Frank; Vachon, Dominic; Gallego, Irene; Grossart, Hans‐Peter; Domis, Lisette de Senerpont; Teurlincx, Sven; Seelen, Laura; Lürling, Miquel; Verstijnen, Yvon; Maliaka, Valentini; Fonvielle, Jérémy; Visser, P.; Verspagen, Jolanda M. H.; Herk, Maria van; Antoniou, Maria G.; Tsiarta, Nikoletta; McCarthy, Valerie; Perello, Victor C.; Machado-Vieira, Danielle; Oliveira, Alinne Gurjão de; Maronić, Dubravka Špoljarić; Stević, Filip; Pfeiffer, Tanja Žuna; Vucelić, Itana Bokan; Žutinić, Petar; Udovič, Marija Gligora; Plenković-Moraj, Anđelka; Bláha, Luděk; Geriš, Rodan; Fránková, Markéta; Christoffersen, Kirsten; Warming, Trine Perlt; Feldmann, Tõnu; Laas, Alo; Panksep, Kristel; Tuvikene, Lea; Kangro, Kersti; Koreivienė, Judita; Karosienė, Jūratė; Kasperovičienė, Jūratė; Savadova, Ksenija; Vitonytė, Irma; Häggqvist, Kerstin; Salmi, Pauliina; Арвола, Лаури; Rothhaupt, Karl O.; Avagianos, Christos; Kaloudis, Triantafyllos; Gkelis, Spyros; Panou, Manthos; Triantis, Theodoros M.; Zervou, Sevasti‐Kiriaki; Hiskia, Anastasia; Obertegger, Ulrike; Adriano, Bruno; Flaim, Giovanna; Salmaso, Nico; Cerasino, Leonardo; Haande, Sigrid; Skjelbred, Birger; Grabowska, Magdalena; Karpowicz, Maciej; Chmura, Damian; Nawrocka, Lidia; Kobos, Justyna; Mazur‐Marzec, Hanna; Alcaraz-Párraga, Pablo; Wilk‐Woźniak, Elżbieta; Krztoń, Wojciech; Walusiak, Edward; Gągała-Borowska, Ilona; Mankiewicz-Boczek, Joanna; Toporowska, Magdalena; Pawlik‐Skowrońska, Barbara; Niedźwiecki, Michał; Pęczuła, W.; Napiórkowska‐Krzebietke, Agnieszka; Dunalska, Julita; Sieńska, Justyna; Szymański, Daniel; Kruk, Marek; Budzyńska, Agnieszka; Gołdyn, Ryszard; Kozák, Anna; Rosińska, Joanna; Szeląg-Wasielewska, Elżbieta; Domek, Piotr; Jakubowska-Krepska, Natalia; Kwasiżur, Kinga; Messyasz, Beata; Pełechata, Aleksandra; Pełechaty, Mariusz; Kokociński, Mikołaj; Madrecka-Witkowska, Beata; Kostrzewska-Szlakowska, Iwona; Frąk, Magdalena; Bańkowska-Sobczak, Agnieszka; Wasilewicz, Michał; Ochocka, Agnieszka; Pasztaleniec, Agnieszka; Jasser, Iwona; Antão-Geraldes, Ana Maria; Leira, Manel; Vasconcelos, Vítor; Morais, João; Vale, Micaela; Raposeiro, Pedro M.; Gonçalves, Vítor; Aleksovski, Boris; Krstić, Svetislav; Nemova, Hana; Drastichova, Iveta; Chomova, Lucia; Remec-Rekar, Špela; Eleršek, Tina; Hansson, Lars‐Anders; Urrutia‐Cordero, Pablo; Bravo, Andrea G.; Buck, Moritz; Colom-Montero, William; Mustonen, Kristiina; Pierson, Don; Yang, Yang; Richardson, Jessica; Edwards, Christine; Cromie, Hannah; Delgado‐Martín, Jordi; García, David Granado; Cereijo, José Luis; Gomà, Joan; Trapote, Mari Carmen; Vegas‐Vilarrúbia, Teresa; Obrador, Biel; García-Murcia, Ana; Real, Monserrat; Romans, Elvira; Noguero-Ribes, Jordi; Duque, David Parreño; Fernández-Morán, Elísabeth; Úbeda, Bárbara; Gálvez, J. A.; Catalán, Núria; Pérez‐Martínez, Carmen; Ramos–Rodríguez, Eloísa; Cillero-Castro, Carmen; Moreno‐Ostos, Enrique; Blanco, José María; Rodrı́guez, Valeriano; Montes-Pérez, Jorge Juan; Palomino, Roberto L.; Rodríguez-Pérez, Estela; Hernández, Armand; Carballeira, Rafael; Camacho, Antonio; Picazo, Antonio; Rochera, Carlos; Santamans, Anna C.; Ferriol, Carmen; Romo, Susana; Soria, Juan M.; Özen, Arda; Karan, Tünay; Demir, Nilsun; Beklioğlu, Meryem; Filiz, Nur; Levi, Eti E.; Işkın, Uğur; Bezirci, Gizem; Tavşanoğlu, Ülkü Nіhan; Çelik, Kemal; Özhan, Koray; Karakaya, Nusret; Koçer, Mehmet Ali Turan; Yılmaz, Mete; Maraşlıoğlu, Faruk; Fakıoğlu, Özden; Soylu, Elif Neyran; Yağcı, Meral Apaydın; Çınar, Şakir; Çapkın, Kadir; Yağcı, Abdülkadir; Cesur, Mehmet; Bilgin, Fuat; Bulut, Cafer; Uysal, Rahmi; Latife, Köker; Akçaalan, Reyhan; Albay, Meriç; Tahir, Mehmet; Özkan, Korhan; Sevi̇ndi̇k, Tuğba Ongun; Tunca, Hatice; Önem, Burçin; Paerl, Hans W.; Carey, Cayelan C.; Ibelings, Bastiaan Willem

doi:10.1002/lno.11963

Cited by 25 publications

(4 citation statements)

References 88 publications

(115 reference statements)

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“…The average satellite observation frequency for the dataset over the study period was 1.7 days, which is close to the recommended sampling frequency of once every two days required to detect short-term perturbations in phytoplankton dynamics [43] and compares favorably with large-scale in situ synoptic sampling efforts. It is also well above the frequencies recommended by EU policy [44][45][46]. The timing of Chl-a and turbidity peaks after a fire occurrence were also identified by this analysis.…”

Section: Data and Statistical Analysissupporting

confidence: 60%

Investigating the Impact of Wildfires on Lake Water Quality Using Earth Observation Satellites

Caroni,

Pinardi,

Free

et al. 2024

Applied Sciences

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A study was carried out to investigate the effects of wildfires on lake water quality using a source dataset of 2024 lakes worldwide, covering different lake types and ecological settings. Satellite-derived datasets (Lakes_cci and Fire_cci) were used and a Source Pathway Receptor approach applied which was conceptually represented by fires (burned area) as a source, precipitation/drought representing transport dynamics, and lakes as the ultimate receptor. This identified 106 lakes worldwide that are likely prone to be impacted by wildfires via a terrestrial pathway. Satellite-derived chlorophyll-a (Chl-a) and turbidity variables were used as indicators to detect changes in lake water quality potentially induced by wildfires over a four-year period. The lakes with the largest catchment areas burned and characterized by regular annual fires were located in Africa. Evidence for a strong influence of wildfires was not found across the dataset examined, although clearer responses were seen for some individual lakes. However, among the hydro-morphological characteristics examined, lake depth was found to be significant in determining Chl-a concentration peaks which were higher in shallow and lower in deep lakes. Lake turbidity responses indicated a dependence on lake catchment and weather conditions. While wildfires are likely to contribute to the nutrient load of lakes as found in previous studies, it is possible that in many cases it is not a dominant pressure and that its manifestation as a signal in lake Chl-a or turbidity values depends to a large part on lake typology and catchment characteristics. Assessment of lake water quality changes six months after a fire showed that Chl-a concentrations either increased, decreased, or showed no changes in a similar number of lakes, indicating that a lake specific ecological and hydro-morphological context is important for understanding lake responses to wildfires.

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Section: Data and Statistical Analysissupporting

confidence: 60%

Investigating the Impact of Wildfires on Lake Water Quality Using Earth Observation Satellites

Caroni,

Pinardi,

Free

et al. 2024

Applied Sciences

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“…However, the differences were not significant. It has been shown that under high nitrogen and phosphorus loading, heatwaves favor algal growth more than continuous warming, potentially due to the fact that extreme temperature fluctuations facilitate growth of cyanobacteria at high levels of nutrients. , As shown by Chen et al and Donis et al., summer extreme climate events (i.e., heatwaves) facilitate an increased productivity and an increased cycling of nutrients in the pelagic, resulting in a higher peak of cyanobacteria biomass in lake ecosystems. Meanwhile, heatwaves may, directly or indirectly, favor cyanobacteria by increasing the stability of the water column, which can provide optimal buoyancy conditions, or by facilitating sediment nutrient release .…”

Section: Resultsmentioning

confidence: 99%

Chemodiversity of Cyanobacterial Toxins Driven by Future Scenarios of Climate Warming and Eutrophication

Yang

Wang

Yan

et al. 2023

Environ. Sci. Technol.

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Climate change and eutrophication are two environmental threats that can alter the structure of freshwater ecosystems and their service functions, but we know little about how ecosystem structure and function will evolve in future scenarios of climate warming. Therefore, we created different experimental climate scenarios, including present-day conditions, a 3.0 °C increase in mean temperature, and a "heatwaves" scenario (i.e., an increase in temperature variability) to assess the effects of climate change on phytoplankton communities under simultaneous stress from eutrophication and herbicides. We show that the effects of climate warming, particularly heatwaves, are associated with elevated cyanobacterial abundances and toxin production, driven by a change from mainly nontoxic to toxic Microcystis spp. The reason for higher cyanobacterial toxin concentrations is likely an increase in abundances because under the dual pressures of climate warming and eutrophication individual Microcystis toxin-producing ability decreased. Eutrophication and higher temperatures significantly increased the biomass of Microcystis, leading to an increase in the cyanobacterial toxin concentrations. In contrast, warming alone did not produce higher cyanobacterial abundances or cyanobacterial toxin concentrations likely due to the depletion of the available nutrient pool. Similarly, the herbicide glyphosate alone did not affect abundances of any phytoplankton taxa. In the case of nutrient enrichment, cyanobacterial toxin concentrations were much higher than under warming alone due to a strong boost in biomass of potential cyanobacterial toxin producers. From a broader perspective our study shows that in a future warmer climate, nutrient loading has to be reduced if toxic cyanobacterial dominance is to be controlled.

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“…However, a shift in the wind pattern was observed before the end of May, indicating the end of the Northeast Monsoon, and marking the start of the Southwest Monsoon. Along with wind speed, the wind direction can be an indicator of a high concentration of different water quality parameters in the surface of the lake and can also act as a regulator of the physical environment since it can either disrupt or deepen the layer of stratification, depending on the morphology of the water body [53,54].…”

Section: Thermal Structure Of the Lakementioning

confidence: 99%

Identifying Challenges to 3D Hydrodynamic Modeling for a Small, Stratified Tropical Lake in the Philippines

Duka,

Monterey,

Casim

et al. 2024

Water

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Three-dimensional hydrodynamic modeling for small, stratified tropical lakes in the Philippines and in Southeast Asia in general is not deeply explored. This study pioneers investigating the hydrodynamics of a small crater lake in the Philippines with a focus on temperature simulation using a Fantom Refined 3D model that has been tested mostly for temperate and sub-tropical lakes. The lake’s monthly temperature during the dry season served as a reference for the model’s initial condition and validation. For the simulation to proceed, input data such as weather, inflow, and bathymetry were prepared. In the absence of hourly meteorological data from local weather stations, this paper adopted the satellite weather data from Solcast. Simple correlation analysis of daily weather data between local stations and Solcast showed valid and acceptable results. Inflow values were estimated using the rational method while the stream temperature was estimated from a regression equation using air temperatures as input. The validated satellite-derived data and runoff model can therefore be employed for 3D modeling. The simulations resulted in extremely higher temperatures compared with those observed when using previous default model settings. Direct modifications were then applied to weather parameters, compromising their integrity but resulting in reasonable profiles. By adding scaling factors to heat flux equations and multiplying their components by 0.75 (shortwave), 1.35 (longwave), 0.935 (air temperature), and 0.80 (wind), better results were achieved. This study identifies several challenges in performing 3D hydrodynamic modeling, such as paucity in input hydro-meteorologic and limnologic data and the need for heat flux model improvement. Overall, this study was successful in employing 3D hydrodynamic modeling in a tropical lake, which can pave directions and serve as an excellent reference for future modeling in the same region.

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Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summer

Cited by 25 publications

References 88 publications

Investigating the Impact of Wildfires on Lake Water Quality Using Earth Observation Satellites

Investigating the Impact of Wildfires on Lake Water Quality Using Earth Observation Satellites

Chemodiversity of Cyanobacterial Toxins Driven by Future Scenarios of Climate Warming and Eutrophication

Identifying Challenges to 3D Hydrodynamic Modeling for a Small, Stratified Tropical Lake in the Philippines

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