Donis, DaphneMantzouki, EvanthiaMcGinnis, Daniel F.Vachon, DominicGallego, IreneGrossart, Hans-Peterde Senerpont Domis, Lisette N.Teurlincx, SvenSeelen, LauraLürling, MiquelVerstijnen, YvonMaliaka, ValentiniFonvielle, JeremyVisser, Petra M.Verspagen, Jolandavan Herk, MariaAntoniou, Maria G.Tsiarta, NikolettaMcCarthy, ValeriePerello, Victor C.Machado-Vieira, DanielleGurj~ao de Oliveira, AlinneMaroni, Dubravka ŠpoljaricStevic, FilipPfeiffer, Tanja ŽunaVucelic, Itana BokanŽutinic, PetarUdovic, Marija GligoraPlenkovic-Moraj, AnđelkaBlaha, LudekGeriš, RodanFrankova, MarkétaChristoffersen, Kirsten SeesternWarming, Trine PerltFeldmann, TõnuLaas, AloPanksep, KristelTuvikene, LeaKangro, KerstiKoreiviene, JuditaKarosiene, JurateKasperoviciene, JurateSavadova-Ratkus, KsenijaVitonyte, IrmaHäggqvist, KerstinSalmi, PauliinaArvola, LauriRothhaupt, KarlAvagianos, ChristosKaloudis, TriantafyllosGkelis, SpyrosPanou, ManthosTriantis, TheodorosZervou, Sevasti-KiriakiHiskia, AnastasiaObertegger, UlrikeBoscaini, AdrianoFlaim, GiovannaSalmaso, NicoCerasino, LeonardoHaande, SigridSkjelbred, BirgerGrabowska, MagdalenaKarpowicz, MaciejChmura, DamianNawrocka, LidiaKobos, JustynaMazur-Marzec, HannaAlcaraz-Parraga, PabloWilk-Wozniak, ElżbietaKrzton, WojciechWalusiak, EdwardGagala-Borowska, IlonaMankiewicz-Boczek, JoanaToporowska, MagdalenaPawlik-Skowronska, BarbaraNiedzwiecki, MichałPęczuła, WojciechKruk, MarekBudzynska, AgnieszkaGoldyn, RyszardKozak, AnnaRosinska, JoannaSzeląg-Wasielewska, ElżbietaDomek, PiotrJakubowska-Krepska, NataliaKwasizur, KingaMessyasz, BeataPełechata, AleksandraPełechaty, MariuszKokocinski, MikolajMadrecka-Witkowska, BeataKostrzewska-Szlakowska, IwonaFrąk, MagdalenaJasser, IwonaAntao-Geraldes, Ana M.Leira, ManelVasconcelos, VitorMorais, JoaoVale, MicaelaRaposeiro, Pedro M.Gonçalves, VítorAleksovski, BorisKrstic, SvetislavNemova, HanaDrastichova, IvetaChomova, LuciaRemec-Rekar, SpelaElersek, TinaHansson, Lars-AndersUrrutia-Cordero, PabloBravo, Andrea G.Buck, MoritzColom-Montero, WilliamMustonen, KristiinaPierson, DonYang, YangRichardson, JessicaEdwards, ChristineCromie, HannahDelgado-Martín, JordiGarcía, DavidCereijo, Jose LuísGomà, JoanTrapote, Mari CarmenVegas-Vilarrúbia, TeresaObrador, BielGarcía-Murcia, AnaReal, MonserratRomans, ElviraNoguero-Ribes, JordiDuque, David ParreñoFernandez-Moran, ElísabethÚbeda, BarbaraGalvez, José AngelCatalan, NúriaPérez-Martínez, CarmenRamos-Rodríguez, EloísaCillero-Castro, CarmenMoreno-Ostos, EnriqueBlanco, José MaríaRodríguez, ValerianoMontes-Pérez, Jorge JuanPalomino, Roberto L.Rodríguez-Pérez, EstelaHernandez, ArmandCarballeira, RafaelCamacho, AntonioPicazo, AntonioRochera, CarlosSantamans, Anna C.Ferriol, CarmenRomo, SusanaSoria, Juan MiguelÖzen, ArdaKaran, TünayDemir, NilsunBeklioglu, MeryemFiliz, NurLevi, EtiIskin, UgurBezirci, GizemTavsanoglu, Ülkü NihanÇelik, KemalOzhan, KorayKarakaya, NusretKoçer, Mehmet Ali TuranYilmaz, MeteMaraslıoglu, FarukFakioglu, ÖzdenSoylu, Elif NeyranYagcı, Meral ApaydınÇınar, SakirÇapkın, KadirYagcı, AbdulkadirCesur, MehmetBilgin, FuatBulut, CaferUysal, RahmiLatife, KökerAkçaalan, ReyhanAlbay, MeriçAlp, Mehmet TahirÖzkan, KorhanSevindik, Tugba OngunTunca, HaticeÖnem, BurçinPaerl, HansCarey, Cayelan C.Ibelings, Bastiaan W.2021-11-152021-11-152021-10-30Donis, D., Mantzouki, E., McGinnis, D. F., Vachon, D., Gallego, I., Grossart, H., Senerpont Domis, L. N., Teurlincx, S., Seelen, L., Lürling, M., Verstijnen, Y., Maliaka, V., Fonvielle, J., Visser, P. M., Verspagen, J., Herk, M., Antoniou, M. G., Tsiarta, N., McCarthy, V., Perello, V. C., Machado‐Vieira, D., Oliveira, A. G., Maronić, D. Š., Stević, F., Pfeiffer, T. Ž., Vucelić, I. B., Žutinić, P., Udovič, M. G., Plenković‐Moraj, A., Bláha, L., Geriš, R., Fránková, M., Christoffersen, K. S., Warming, T. P., Feldmann, T., Laas, A., Panksep, K., Tuvikene, L., Kangro, K., Koreivienė, J., Karosienė, J., Kasperovičienė, J., Savadova‐Ratkus, K., Vitonytė, I., Häggqvist, K., Salmi, P., Arvola, L., Rothhaupt, K., Avagianos, C., Kaloudis, T., Gkelis, S., Panou, M., Triantis, T., Zervou, S., Hiskia, A., Obertegger, U., Boscaini, A., Flaim, G., Salmaso, N., Cerasino, L., Haande, S., Skjelbred, B., Grabowska, M., Karpowicz, M., Chmura, D., Nawrocka, L., Kobos, J., Mazur‐Marzec, H., Alcaraz‐Párraga, P., Wilk‐Woźniak, E., Krztoń, W., Walusiak, E., Gagala‐Borowska, I., Mankiewicz‐Boczek, J., Toporowska, M., Pawlik‐Skowronska, B., Niedźwiecki, M., Pęczuła, W., Napiórkowska‐Krzebietke, A., Dunalska, J., Sieńska, J., Szymański, D., Kruk, M., Budzyńska, A., Goldyn, R., Kozak, A., Rosińska, J., Szeląg‐Wasielewska, E., Domek, P., Jakubowska‐Krepska, N., Kwasizur, K., Messyasz, B., Pełechata, A., Pełechaty, M., Kokocinski, M., Madrecka‐Witkowska, B., Kostrzewska‐Szlakowska, I., Frąk, M., Bańkowska‐Sobczak, A., Wasilewicz, M., Ochocka, A., Pasztaleniec, A., Jasser, I., Antão‐Geraldes, A. M., Leira, M., Vasconcelos, V., Morais, J., Vale, M., Raposeiro, P. M., Gonçalves, V., Aleksovski, B., Krstić, S., Nemova, H., Drastichova, I., Chomova, L., Remec‐Rekar, S., Elersek, T., Hansson, L., Urrutia‐Cordero, P., Bravo, A. G., Buck, M., Colom‐Montero, W., Mustonen, K., Pierson, D., Yang, Y., Richardson, J., Edwards, C., Cromie, H., Delgado‐Martín, J., García, D., Cereijo, J. L., Gomà, J., Trapote, M. C., Vegas‐Vilarrúbia, T., Obrador, B., García‐Murcia, A., Real, M., Romans, E., Noguero‐Ribes, J., Duque, D. P., Fernández‐Morán, E., Úbeda, B., Gálvez, J. Á., Catalán, N., Pérez‐Martínez, C., Ramos‐Rodríguez, E., Cillero‐Castro, C., Moreno‐Ostos, E., Blanco, J. M., Rodríguez, V., Montes‐Pérez, J. J., Palomino, R. L., Rodríguez‐Pérez, E., Hernández, A., Carballeira, R., Camacho, A., Picazo, A., Rochera, C., Santamans, A. C., Ferriol, C., Romo, S., Soria, J. M., Özen, A., Karan, T., Demir, N., Beklioğlu, M., Filiz, N., Levi, E., Iskin, U., Bezirci, G., Tavşanoğlu, Ü. N., Çelik, K., Ozhan, K., Karakaya, N., Koçer, M. A. T., Yilmaz, M., Maraşlıoğlu, F., Fakioglu, Ö., Soylu, E. N., Yağcı, M. A., Çınar, Ş., Çapkın, K., Yağcı, A., Cesur, M., Bilgin, F., Bulut, C., Uysal, R., Latife, K., Akçaalan, R., Albay, M., Alp, M. T., Özkan, K., Sevindik, T. O., Tunca, H., Önem, B., Paerl, H., Carey, C. C. and Ibelings, B. W. (2021) ‘Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summer’, Limnology and Oceanography. Wiley. doi: 10.1002/lno.11963.0024-3590https://doi.org/10.1002/lno.11963Publication history: Accepted - 8 October 2021; Published online - 30 October 2021.To determine the drivers of phytoplankton biomass, we collected standardized morphometric, physical, and biological data in 230 lakes across the Mediterranean, Continental, and Boreal climatic zones of the European continent. Multilinear regression models tested on this snapshot of mostly eutrophic lakes (median total phosphorus [TP] = 0.06 and total nitrogen [TN] = 0.7 mg L−1), and its subsets (2 depth types and 3 climatic zones), show that light climate and stratification strength were the most significant explanatory variables for chlorophyll a (Chl a) variance. TN was a significant predictor for phytoplankton biomass for shallow and continental lakes, while TP never appeared as an explanatory variable, suggesting that under high TP, light, which partially controls stratification strength, becomes limiting for phytoplankton development. Mediterranean lakes were the warmest yet most weakly stratified and had significantly less Chl a than Boreal lakes, where the temperature anomaly from the long-term average, during a summer heatwave was the highest (+4°C) and showed a significant, exponential relationship with stratification strength. This European survey represents a summer snapshot of phytoplankton biomass and its drivers, and lends support that light and stratification metrics, which are both affected by climate change, are better predictors for phytoplankton biomass in nutrient-rich lakes than nutrient concentrations and surface temperature.en© 2021 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.Article