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1. Plastic debris in freshwater systems worldwide

Author

Nava, V, Aherne, J, Alfonso, MB, Antão-Geraldes, AM, Attermeyer, K, Bao, R, Bartrons, M, Berger, SA, Biernaczyk, M, Bissen, R, Brookes, J, Brown, D, Candian, G, Cañedo-Argüelles, M, Canle, M, Capelli, C, Carballeira, R, Cereijo, JL, Chawchai, S, Chen, G, Christensen, ST, Christoffersen, KS, de Eyto, E, Delgado, J, Dornan, T, Doubek, JP, Dusaucy, J, Erina, O, Ersoy, Z, Feuchtmayr, H, Lepori, F, Frezzotti, ML, Galafassi, S, Gateuille, D, Gonçalves, V, Grossart, HP, Hamilton, DP, Harris, T, Kangur, K, Kankılıç, GB, Kessler, R, Kiel, C, Krynak, EM, Leiva-Presa, A, Matias, M, Matsuzaki, SS, McElarney, Y, Mitchell, M, Messyasz, B, Mlambo, M, Motitsoe, SN, Owens, C, Özkundakci, D, Pinnow, S, Pociecha, A, Raposeiro, P, Rõõm, EI, Rotta, F, Salmaso, N, Scordo, F, Sibomana, C, Siewert, D, Stepanowska, K, Sudeep, C, Tavşanoğlu, UN, Tereshina, M, Thompson, J, Tolotti, M, Valois, A, Verburg, P, Wesolek, B, Weyhenmeyer, G, Wu, N, Zawisza, E, Zink, L, Leoni, B, Nava, V, Aherne, J, Alfonso, M, Antão-Geraldes, A, Attermeyer, K, Bao, R, Bartrons, M, Berger, S, Biernaczyk, M, Bissen, R, Brookes, J, Brown, D, Candian, G, Cañedo-Argüelles, M, Canle, M, Capelli, C, Carballeira, R, Cereijo, J, Chawchai, S, Chen, G, Christensen, S, Christoffersen, K, de Eyto, E, Delgado, J, Dornan, T, Doubek, J, Dusaucy, J, Erina, O, Ersoy, Z, Feuchtmayr, H, Lepori, F, Frezzotti, M, Galafassi, S, Gateuille, D, Gonçalves, V, Grossart, H, Hamilton, D, Harris, T, Kangur, K, Kankılıç, G, Kessler, R, Kiel, C, Krynak, E, Leiva-Presa, A, Matias, M, Matsuzaki, S, Mcelarney, Y, Mitchell, M, Messyasz, B, Mlambo, M, Motitsoe, S, Owens, C, Özkundakci, D, Pinnow, S, Pociecha, A, Raposeiro, P, Rõõm, E, Rotta, F, Salmaso, N, Scordo, F, Sibomana, C, Siewert, D, Stepanowska, K, Sudeep, C, Tavşanoğlu, U, Tereshina, M, Thompson, J, Tolotti, M, Valois, A, Verburg, P, Wesolek, B, Weyhenmeyer, G, Wu, N, Zawisza, E, Zink, L, and Leoni, B

Subjects
reservoir, limnology, Settore BIO/07 - ECOLOGIA, pollution, lake, microplastic
Published
2022

2. Widespread diminishing anthropogenic effects on calcium in freshwaters

Author

Weyhenmeyer, G.A., Hartmann, J., Hessen, D.O., Kopácek, J., Hejzlar, J., Jacquet, S., Hamilton, S.K., Verburg, P., Leach, T.H., Schmid, M., Flaim, G., Nõges, T., Nõges, P., Wentzky, V.C., Rogora, M., Rusak, J.A., Kosten, S., Paterson, A.M., Teubner, K., Higgins, S.N., Lawrence, Genica, Kangur, K., Kokorite, I., Cerasino, L., Funk, C., Harvey, R., Moatar, Florentina, de Wit, H.A., Zechmeister, T., Uppsala Universitet [Uppsala], UNIVERSITY OF HAMBURG DEU, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), University of Oslo (UiO), INSTITUTE OF HYDROBIOLOGY CZE, Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), MICHIGAN STATE UNIVERSITY USA, National Institute of Water and Atmospheric Research [Auckland] (NIWA), RENSSELAER POLYTECHNIC INSTITUTE TROY USA, EAWAG SWISS FEDERAL INSTITUTE OF AQUATIC SCIENCE AND TECHNOLOGY CHE, FONDAZIONE EDMUND MACH SAN MICHELE ALL ADIGE ITA, ESTONIAN UNIVERSITY OF LIFE SCIENCES TARTU EST, HELMHOLTZ CENTRE FOR ENVIRONMENTAL RESEARCH MAGDEBURG DEU, CNR Water Research Institute (IRSA), Consiglio Nazionale delle Ricerche (CNR), DORSET ENVIRONMENTAL SCIENCE CENTRE DORSET CAN, RADBOUD UNIVERSITY NIJMEGEN NLD, UNIVERSITY OF VIENNA AUT, IISD EXPERIMENTAL LAKES AREA CAN, US GEOLOGICAL SURVEY TROY USA, UNIVERSITY OF LATVIA LVA, U.S. ENVIRONMENTAL PROTECTION AGENCY USA, VERMONT DEPARTMENT OF ENVIRONMENTAL SERVICES USA, RiverLy (UR Riverly), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Norwegian Institute for Water Research (NIVA), BIOLOGICAL STATION LAKE NEUSIEDL ILLMITZ AUT, Swedish Research Council 2016-04153, European Union 643052, Knut and Alice Wallenberg Foundation (KAW project), and Deutsche Forschungsgemeinschaft (DFG) under Germany's Excellence Strategy - EXC 20 2037 'Climate, Climatic Change, and Society' 390683824

Subjects
[SDE]Environmental Sciences
Abstract

Calcium (Ca) is an essential element for almost all living organisms. Here, we examined global variation and controls of freshwater Ca concentrations, using 440 599 water samples from 43 184 inland water sites in 57 countries. We found that the global median Ca concentration was 4.0 mg L-1 with 20.7% of the water samples showing Ca concentrations ≤ 1.5 mg L-1, a threshold considered critical for the survival of many Ca-demanding organisms. Spatially, freshwater Ca concentrations were strongly and proportionally linked to carbonate alkalinity, with the highest Ca and carbonate alkalinity in waters with a pH around 8.0 and decreasing in concentrations towards lower pH. However, on a temporal scale, by analyzing decadal trends in >200 water bodies since the 1980s, we observed a frequent decoupling between carbonate alkalinity and Ca concentrations, which we attributed mainly to the influence of anthropogenic acid deposition. As acid deposition has been ameliorated, in many freshwaters carbonate alkalinity concentrations have increased or remained constant, while Ca concentrations have rapidly declined towards or even below pre-industrial conditions as a consequence of recovery from anthropogenic acidification. Thus, a paradoxical outcome of the successful remediation of acid deposition is a globally widespread freshwater Ca concentration decline towards critically low levels for many aquatic organisms.

Published
2019

5. Increasing Iron Concentrations

Author

Björnerås, C., Weyhenmeyer, G. A., Evans, C. D., Gessner, M. O., Grossart, H.-P., Kangur, K., Kokorite, I., Kortelainen, P., Laudon, H., Lehtoranta, J., Lottig, N., Monteith, D. T., Nõges, P., Nõges, T., Oulehle, F., Riise, G., Rusak, J. A., Räike, A., Sire, J., Sterling, S., and Kritzberg, E. S.

Subjects
browning, trends, climate change, iron, Geochemistry, freshwaters, Geokemi, Institut für Biochemie und Biologie, Ecology and Environment
Abstract

Recent reports of increasing iron (Fe) concentrations in freshwaters are of concern, given the fundamental role of Fe in biogeochemical processes. Still, little is known about the frequency and geographical distribution of Fe trends or about the underlying drivers. We analyzed temporal trends of Fe concentrations across 340 water bodies distributed over 10 countries in northern Europe and North America in order to gain a clearer understanding of where, to what extent, and why Fe concentrations are on the rise. We found that Fe concentrations have significantly increased in 28% of sites, and decreased in 4%, with most positive trends located in northern Europe. Regions with rising Fe concentrations tend to coincide with those with organic carbon (OC) increases. Fe and OC increases may not be directly mechanistically linked, but may nevertheless be responding to common regional-scale drivers such as declining sulfur deposition or hydrological changes. A role of hydrological factors was supported by covarying trends in Fe and dissolved silica, as these elements tend to stem from similar soil depths. A positive relationship between Fe increases and conifer cover suggests that changing land use and expanded forestry could have contributed to enhanced Fe export, although increases were also observed in nonforested areas. We conclude that the phenomenon of increasing Fe concentrations is widespread, especially in northern Europe, with potentially significant implications for wider ecosystem biogeochemistry, and for the current browning of freshwaters.

Published
2017

6. Widespread Increases in Iron Concentration in European and North American Freshwaters

Author

Björnerås, C., Weyhenmeyer, Gesa A., Evans, C. D., Gessner, M. O., Grossart, H. P., Kangur, K., Kokorite, I., Kortelainen, P., Laudon, H., Lehtoranta, J., Lottig, N., Monteith, D. T., Nõges, P., Nõges, T., Oulehle, F., Riise, G., Rusak, J. A., Räike, A., Sire, J., Sterling, S., Kritzberg, E. S., Björnerås, C., Weyhenmeyer, Gesa A., Evans, C. D., Gessner, M. O., Grossart, H. P., Kangur, K., Kokorite, I., Kortelainen, P., Laudon, H., Lehtoranta, J., Lottig, N., Monteith, D. T., Nõges, P., Nõges, T., Oulehle, F., Riise, G., Rusak, J. A., Räike, A., Sire, J., Sterling, S., and Kritzberg, E. S.

Abstract

Recent reports of increasing iron (Fe) concentrations in freshwaters are of concern, given the fundamental role of Fe in biogeochemical processes. Still, little is known about the frequency and geographical distribution of Fe trends or about the underlying drivers. We analyzed temporal trends of Fe concentrations across 340 water bodies distributed over 10 countries in northern Europe and North America in order to gain a clearer understanding of where, to what extent, and why Fe concentrations are on the rise. We found that Fe concentrations have significantly increased in 28% of sites, and decreased in 4%, with most positive trends located in northern Europe. Regions with rising Fe concentrations tend to coincide with those with organic carbon (OC) increases. Fe and OC increases may not be directly mechanistically linked, but may nevertheless be responding to common regional-scale drivers such as declining sulfur deposition or hydrological changes. A role of hydrological factors was supported by covarying trends in Fe and dissolved silica, as these elements tend to stem from similar soil depths. A positive relationship between Fe increases and conifer cover suggests that changing land use and expanded forestry could have contributed to enhanced Fe export, although increases were also observed in nonforested areas. We conclude that the phenomenon of increasing Fe concentrations is widespread, especially in northern Europe, with potentially significant implications for wider ecosystem biogeochemistry, and for the current browning of freshwaters.

Published
2017
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7. Widespread Increases in Iron Concentration in European and North American Freshwaters

Author

Björnerås, C., primary, Weyhenmeyer, G. A., additional, Evans, C. D., additional, Gessner, M. O., additional, Grossart, H.-P., additional, Kangur, K., additional, Kokorite, I., additional, Kortelainen, P., additional, Laudon, H., additional, Lehtoranta, J., additional, Lottig, N., additional, Monteith, D. T., additional, Nõges, P., additional, Nõges, T., additional, Oulehle, F., additional, Riise, G., additional, Rusak, J. A., additional, Räike, A., additional, Sire, J., additional, Sterling, S., additional, and Kritzberg, E. S., additional

Published
2017
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15. Focus Group Methodology

Author

Gooch, Geoffrey, Kangur, K., Gooch, Geoffrey, and Kangur, K.

Abstract

This publication presents the results of the international research project – River Dialogue. From 2003 to 2004, the River Dialogue project aimed at identifying the best approaches to increase public participation in the implementation of the EU Water Framework Directive, including preparation and implementation of river basin management plans. based on discussions with a wide range of specialists, stakeholders and local citizens in the three European river basins, this publication presents recommendations on approaches for involving scientists on the one hand and the public on the other hand in water management decision and policy-making.

Published
2004

27. LAKE PEIPSI AND ITS ECOSYSTEM

Author

Haberman, J, primary, Jaani, A, primary, Kangur, A, primary, Kangur, K, primary, Laugaste, R, primary, Milius, A, primary, Mäemets, H, primary, and Pihu, E, primary

Published
2000
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35. Ruffe (Gymnocephalus cernuus)

Author

Rösch, R., Kangur, A., Kangur, K., Krämer, A., Ráb, P., Schlechta, V., Tapaninen, M., and Jim Treasurer

36. Effects of climate and land-use changes on fish catches across lakes at a global scale

Author

Kao, Y.C., Rogers, M.W., Bunnell, D.B., Cowx, I.G., Qian, S.S., Anneville, O, Beard Jr, D.T., Brinker, A., Britton, J.R., Chura-Cruz, R., Gownaris, N.J., Jackson, J.R., Kangur, K., Kolding, J., Lukin, A.A, Lynch, A.J., Mercado-Silva, N., Moncayo-Estrada, Njaya, F.J., Ostrovsky, I., Rudstam, L.G., Sandström, A.L.E., Sato, Y., Siguayro-Maman, H., Thorpe, A., van Zwieten, P.A.M., Volta, P, Wang, Y., Weiperth, A., Weyl, O.L.F., Young, J.D., Kao, Y.C., Rogers, M.W., Bunnell, D.B., Cowx, I.G., Qian, S.S., Anneville, O, Beard Jr, D.T., Brinker, A., Britton, J.R., Chura-Cruz, R., Gownaris, N.J., Jackson, J.R., Kangur, K., Kolding, J., Lukin, A.A, Lynch, A.J., Mercado-Silva, N., Moncayo-Estrada, Njaya, F.J., Ostrovsky, I., Rudstam, L.G., Sandström, A.L.E., Sato, Y., Siguayro-Maman, H., Thorpe, A., van Zwieten, P.A.M., Volta, P, Wang, Y., Weiperth, A., Weyl, O.L.F., and Young, J.D.

Abstract

Globally, our knowledge on lake fisheries is still limited despite their importance to food security and livelihoods. Here we show that fish catches can respond either positively or negatively to climate and land-use changes, by analyzing time-series data (1970–2014) for 31 lakes across five continents. We find that effects of a climate or land-use driver (e.g., air temperature) on lake environment could be relatively consistent in directions, but consequential changes in a lake-environmental factor (e.g., water temperature) could result in either increases or decreases in fish catch in a given lake. A subsequent correlation analysis indicates that reductions in fish catch was less likely to occur in response to potential climate and land-use changes if a lake is located in a region with greater access to clean water. This finding suggests that adequate investments for water-quality protection and water-use efficiency can provide additional benefits to lake fisheries and food security.

43. Macrozoobenthos of Lake Peipsi-Pihkva: taxonomical composition, abundance, biomass, and their relations to some ecological parameters

Author

Kangur, K., Timm, T., Timm, H., and Timm, V.

Subjects
WATER quality monitoring, FRESHWATER biology
Abstract

The large but shallow (3,558 k m{sup}2{end} , up to 15.3 m deep) lake is eutrophic, with Chironomus plumosus and Potamothrix hammoniensisas dominating macroinvertebrates in the profundal. The extensive well-aerated sublittoral with sandy bottom sediments has a mesotrophic appearance and supports a diverse fauna with several oxyphilous species, including a very abundant population of Dreissena polymorpha. The phytophilous fauna is limited to small sheltered areas only. The average abundance of the "small" animals of macrozoobenthos (without big molluscs) was 2,617 ind. m{sup}- 2{end} , their biomass 12.34 g m{sup}-2{end} (corresponding to 52.2 kJ m{sup}- 2{end} ) in 1964-1994. Thesame figures for big molluscs (mostly Dreissena) were 304 ind. m{sup}-2{end} and 238 g m{sup}-2{end} in 1964-1994, and even 864 ind. m{sup}-2{end} and 687 g m{sup}-2{end} in 1985-1988, at the time of their special mapping. The sublittoral zone revealed the lowest biomass of 11 "small" animals but the highest biomass of big molluscs. The southern, shallower lake regions, more enriched with nutrients and better protected from wind, revealed a significantly higher biomass of "small" macrozoobenthos in the near-shore zone than the cleaner and open northern part, while no positive effect of enrichment was observed neither in the biomass of profundal zoobenthos nor in that of big molluscs. The production of the "small" macrozoobenthos was calculated as 111 and 53 kJ m{sup}-2{end} during two annual cycles in Lake Peipsi s.s., the most productive period being the autumn overtum. Lake Peipsi-Pihkva has the highest abundance and biomass of macrozoobenthos among the large lakes of North Europe. [ABSTRACT FROM AUTHOR]

Published
1996

44. Plastic debris in lakes and reservoirs

Author

Nava, Veronica, Chandra, Sudeep, Aherne, Julian, Alfonso, María B, Antão-Geraldes, Ana M, Attermeyer, Katrin, Bao, Roberto, Bartrons, Mireia, Berger, Stella A, Biernaczyk, Marcin, Bissen, Raphael, Brookes, Justin D, Brown, David, Cañedo-Argüelles, Miguel, Canle, Moisés, Capelli, Camilla, Carballeira, Rafael, Cereijo, José Luis, Chawchai, Sakonvan, Christensen, Søren T, Christoffersen, Kirsten S, de Eyto, Elvira, Delgado, Jorge, Dornan, Tyler N, Doubek, Jonathan P, Dusaucy, Julia, Erina, Oxana, Ersoy, Zeynep, Feuchtmayr, Heidrun, Frezzotti, Maria Luce, Galafassi, Silvia, Gateuille, David, Gonçalves, Vitor, Grossart, Hans-Peter, Hamilton, David P, Harris, Ted D, Kangur, Külli, Kankılıç, Gökben Başaran, Kessler, Rebecca, Kiel, Christine, Krynak, Edward M, Leiva-Presa, Àngels, Lepori, Fabio, Matias, Miguel G, Matsuzaki, Shin-Ichiro S, McElarney, Yvonne, Messyasz, Beata, Mitchell, Mark, Mlambo, Musa C, Motitsoe, Samuel N, Nandini, Sarma, Orlandi, Valentina, Owens, Caroline, Özkundakci, Deniz, Pinnow, Solvig, Pociecha, Agnieszka, Raposeiro, Pedro Miguel, Rõõm, Eva-Ingrid, Rotta, Federica, Salmaso, Nico, Sarma, S S S, Sartirana, Davide, Scordo, Facundo, Sibomana, Claver, Siewert, Daniel, Stepanowska, Katarzyna, Tavşanoğlu, Ülkü Nihan, Tereshina, Maria, Thompson, James, Tolotti, Monica, Valois, Amanda, Verburg, Piet, Welsh, Brittany, Wesolek, Brian, Weyhenmeyer, Gesa A, Wu, Naicheng, Zawisza, Edyta, Zink, Lauren, Leoni, Barbara, Nava, V, Chandra, S, Aherne, J, Alfonso, M, Antão-Geraldes, A, Attermeyer, K, Bao, R, Bartrons, M, Berger, S, Biernaczyk, M, Bissen, R, Brookes, J, Brown, D, Cañedo-Argüelles, M, Canle, M, Capelli, C, Carballeira, R, Cereijo, J, Chawchai, S, Christensen, S, Christoffersen, K, de Eyto, E, Delgado, J, Dornan, T, Doubek, J, Dusaucy, J, Erina, O, Ersoy, Z, Feuchtmayr, H, Frezzotti, M, Galafassi, S, Gateuille, D, Gonçalves, V, Grossart, H, Hamilton, D, Harris, T, Kangur, K, Kankılıç, G, Kessler, R, Kiel, C, Krynak, E, Leiva-Presa, À, Lepori, F, Matias, M, Matsuzaki, S, Mcelarney, Y, Messyasz, B, Mitchell, M, Mlambo, M, Motitsoe, S, Nandini, S, Orlandi, V, Owens, C, Özkundakci, D, Pinnow, S, Pociecha, A, Raposeiro, P, Rõõm, E, Rotta, F, Salmaso, N, Sarma, S, Sartirana, D, Scordo, F, Sibomana, C, Siewert, D, Stepanowska, K, Tavşanoğlu, Ü, Tereshina, M, Thompson, J, Tolotti, M, Valois, A, Verburg, P, Welsh, B, Wesolek, B, Weyhenmeyer, G, Wu, N, Zawisza, E, Zink, L, and Leoni, B

Subjects
plastic pollution, Lakes, Settore BIO/07 - ECOLOGIA, Plastic, microplastic, lentic systems
Abstract

Plastic debris is thought to be widespread in freshwater ecosystems globally1. However, a lack of comprehensive and comparable data makes rigorous assessment of its distribution challenging2,3. Here we present a standardized cross-national survey that assesses the abundance and type of plastic debris (>250 μm) in freshwater ecosystems. We sample surface waters of 38 lakes and reservoirs, distributed across gradients of geographical position and limnological attributes, with the aim to identify factors associated with an increased observation of plastics. We find plastic debris in all studied lakes and reservoirs, suggesting that these ecosystems play a key role in the plastic-pollution cycle. Our results indicate that two types of lakes are particularly vulnerable to plastic contamination: lakes and reservoirs in densely populated and urbanized areas and large lakes and reservoirs with elevated deposition areas, long water-retention times and high levels of anthropogenic influence. Plastic concentrations vary widely among lakes; in the most polluted, concentrations reach or even exceed those reported in the subtropical oceanic gyres, marine areas collecting large amounts of debris4. Our findings highlight the importance of including lakes and reservoirs when addressing plastic pollution, in the context of pollution management and for the continued provision of lake ecosystem services.

Published
2023

45. Global patterns and predictors of microplastic occurrence and abundance in lentic systems

Author

Nava, Veronica, Frezzotti, Maria Luce, Aherne, Julian, Alfonso, María B., Geraldes, Ana Maria, Attermeyer, Katrin, Bah, Abdou R., Bao, Roberto, Bartrons, Mireia, Berger, Stella, Biernaczyk, Marcin, Breider, Florian, Brookes, Justin, Cañedo-Argüelles, Miguel, Canle, Moisés, Capelli, Camilla, Carballeira, Rafael, Cereijo, Jose Luís, Christensen, Søren T., Christoffersen, Kirsten Seestern, Clayer, Francois, Eyto, Elvira de, Domis, Lisette N. de Senerpont, Delgado, Martín Jordi, Doubek, Jonathan, Eaton, Ashley, Seyda, Erdogan, Erina, Oxana, Ersoy, Zeynep, Feuchtmayr, Heidrun, Fugère, Vincent F., Galafassi, Silvia, Gonçalves, Vítor, Grossart, Hans-Peter, Hamilton, David, Hanson, Paul C., Harris, Ted, Kankılıç, Gökben Başaran, Kessler, Rebecca, Jacquet, Stéphan, Kangur, Külli, Kiel, Christine, Knoll, Lesley, Kokorīte, Ilga, Lavoie, Isabelle, Leiva-Presa, Àngels, Lepori, Fabio, Lusher, Amy, Macintyre, Sally, Matias, Miguel, Matsuzaki, Shin-Ichiro, McCarthy, Valerie, McElarney, Yvonne, McNally, David, Belay, Berte Mekonen, Messyasz, Beata, Mlambo, Musa, Nandini, Sarma, Nodine, Emily, Özen, Arda, Ozkundakci, Deniz, Vazquez Perez, Ricardo, Pociecha, Agnieszka, Raposeiro, Pedro M., Rõõm, Eva-Ingrid, Salmaso, Nico, Singaraju, S.S. Sarma, Saulnier-Talbot, Émilie, Scordo, Facundo, Sibomana, Claver, Stepanowska, Katarzyna, Tavşanoğlu, Ülkü Nihan, Tolotti, Monica, Udoh, Abel, Urrutia-Cordero, Pablo, Valois, Amanda, Vandergoes, Marcus, Verburg, Piet, Volta, Pietro, Wain, Danielle, Wesolek, Brian, Weyhenmeyer, Gesa, Wightman, Ryan, Wood, Susie, Naicheng, Wu, Zawiska, Izabela, Zawisza, Edyta, Zink, Lauren, Leoni, Barbara, Nava, V, Frezzotti, M, Aherne, J, Alfonso, M, Antão-Geraldes, A, Attermeyer, K, Bah, A, Bao, R, Bartrons, M, Berger, S, Biernaczyk, M, Breider, F, Brookes, J, Cañedo-Argüelles, M, Canle, M, Capelli, C, Carballeira, R, Cereijo, J, Christensen, S, Christoffersen, K, Clayer, F, De Eyto, E, De Senerpont Domis, L, Delgado, M, Doubek, J, Eaton, A, Erdogan, S, Erina, O, Ersoy, Z, Feuchtmayr, H, Fugère, V, Galafassi, S, Gonçalves, V, Grossart, H, Hamilton, D, Hanson, P, Harris, T, Kankılıç, G, Kessler, R, Jacquet, S, Kangur, K, Kiel, C, Knoll, L, Kokorīte, I, Lavoie, I, Leiva-Presa, A, Lepori, F, Lusher, A, Macintyre, S, Matias, M, Matsuzaki, S, Mccarthy, V, Mcelarney, Y, Mcnally, D, Belay, B, Messyasz, B, Mlambo, M, Nandini, S, Nodine, E, Özen, A, Ozkundakci, D, Perez, R, Pociecha, A, Raposeiro, P, Rõõm, E, Salmaso, N, Sarma, S, Saulnier-Talbot, E, Scordo, F, Sibomana, C, Stepanowska, K, Tavşanoğlu, U, Tolotti, M, Udoh, A, Urrutia Cordera, P, Valois, A, Vandergoes, M, Verburg, P, Volta, P, Wain, D, Wesolek, B, Weyhenmeyer, G, Wightman, R, Wood, S, Wu, N, Zawiska, I, Zawisza, E, Zink, L, and Leoni, B

Subjects
reservoir, watershed feature, lake, micro-Raman spectroscopy, Plastics, microplastic
Abstract

The majority of microplastic research has focused on seawater, with fewer than 4% of microplasticsrelated studies occurring on freshwaters. The limited available information suggests that the abundance of microplastics in freshwaters is often as high or even higher than marine environments. However, comprehensive investigations on occurrence and fate of microplastics in freshwaters are scarce and highly fragmented, partly because detection and identification of microplastic particles is rather complex. In addition, up to now, harmonized and standardized protocols for the sampling and analysis of microplastics in freshwaters do not exist, and studies with different research aims and hypotheses often report unstandardized results, making comparison among studies difficult. In the present study, we performed the first global standardized sampling and analysis effort to investigate the occurrence and distribution of microplastics in surface water of lakes and reservoirs with different anthropogenic impacts. Participants aim to collect water samples of freshwater systems with different features (e.g., area, depth, thermal behavior, watershed), following a common protocol. This 18 establishes the collection of samples by horizontal trawling of a plankton net and, after treatment with hydrogen peroxide, the polymer identification through micro-Raman spectroscopy. This GLEON project will allow obtaining comparable data about microplastic contamination in different freshwater systems around the globe. With this global dataset, our goals are to determine whether a relationship exists between the abundance of microplastics and the waterbody/watershed attributes and understand which factors are likely to influence the occurrence of microplastics in surface water of lentic systems. info:eu-repo/semantics/publishedVersion

Published
2020

49. Keeping social distance in a classroom while interacting via a telepresence robot: a pilot study.

Author

Marmor K, Leoste J, Heidmets M, Kangur K, Rebane M, Pöial J, and Kasuk T

Abstract

Introduction: The use of various telecommunication tools has grown significantly. However, many of these tools (e.g., computer-based teleconferencing) are problematic in relaying non-verbal human communication. Telepresence robots (TPRs) are seen as telecommunication tools that can support non-verbal communication., Methods: In this paper, we examine the usability of TPRs, and communication distance related behavioral realism in communication situations between physically present persons and a TPR-mediated person. Twenty-four participants, who played out 36 communication situations with TPRs, were observed and interviewed., Results: The results indicate that TPR-mediated people, especially women, choose shorter than normal communication distances. The type of the robot did not influence the choice of communication distance. The participants perceived the use of TPRs positively as a feasible telecommunication method., Discussion: When introducing TPRs, situations with greater intrapersonal distances require more practice compared to scenarios where a physically present person communicates with a telepresent individual in the audience. In the latter situation, the robot-mediated person could be perceived as "behaviorally realistic" much faster than in vice versa communication situations., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Marmor, Leoste, Heidmets, Kangur, Rebane, Pöial and Kasuk.)

Published
2024
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50. Testing scenarios for using telepresence robots in healthcare settings.

Author

Leoste J, Strömberg-Järvis K, Robal T, Marmor K, Kangur K, and Rebane AM

Abstract

The ageing global population puts heavy pressure on healthcare systems everywhere. Addressing ageing-related chronic conditions requires employment of novel innovative solutions. Telehealth technologies, including telepresence robots (TPRs), are being rapidly developed to provide healthcare services efficiently wherever needed. This article explores the role of TPRs in addressing the challenges of providing healthcare to an ageing population, emphasizing their potential advantages and drawbacks. Employing an exploratory research approach with qualitative data collection techniques, we tested three TPR usage scenarios in simulated healthcare settings: anamnesis, measurements, and falls and frailty. The study employed a non-random purposive sample comprising 25 participants, and was conducted at a medical facility in June 2023. The findings suggest that TPRs offer promising solutions for healthcare professionals and patients, especially in scenarios when physical presence is impossible or physical isolation is required to prevent contagion. However, the technology is not yet ready to substitute fully human medical workers, potentially causing patient reluctance and emphasizing the need for patient-centered approaches to technology adoption. In addition, more studies are needed to address ethical, privacy, and scalability concerns., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)

Published
2024
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