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1. Time series of freshwater macroinvertebrate abundances and site characteristics of European streams and rivers

Author

Welti, Ellen A. R., Bowler, Diana E., Sinclair, James S., Altermatt, Florian, Álvarez-Cabria, Mario, Amatulli, Giuseppe, Angeler, David G., Archambaud, Gaït, Arrate Jorrín, Iñaki, Aspin, Thomas, Azpiroz, Iker, Baker, Nathan Jay, Bañares, Iñaki, Barquín Ortiz, José, Bodin, Christian L., Bonacina, Luca, Bonada, Núria, Bottarin, Roberta, Cañedo-Argüelles, Miguel, Csabai, Zoltán, Datry, Thibault, de Eyto, Elvira, Dohet, Alain, Domisch, Sami, Dörflinger, Gerald, Drohan, Emma, Eikland, Knut A., England, Judy, Eriksen, Tor E., Evtimova, Vesela, Feio, Maria J., Ferréol, Martial, Floury, Mathieu, Forcellini, Maxence, Forio, Marie Anne Eurie, Fornaroli, Riccardo, Friberg, Nikolai, Fruget, Jean-François, Garcia Marquez, Jaime R., Georgieva, Galia, Goethals, Peter, Graça, Manuel A. S., House, Andy, Huttunen, Kaisa-Leena, Jensen, Thomas Correll, Johnson, Richard K., Jones, J. Iwan, Kiesel, Jens, Larrañaga, Aitor, Leitner, Patrick, L’Hoste, Lionel, Lizée, Marie-Hélène, Lorenz, Armin W., Maire, Anthony, Manzanos Arnaiz, Jesús Alberto, Mckie, Brendan, Millán, Andrés, Muotka, Timo, Murphy, John F., Ozolins, Davis, Paavola, Riku, Paril, Petr, Peñas Silva, Francisco Jesús, Polasek, Marek, Rasmussen, Jes, Rubio, Manu, Sánchez Fernández, David, Sandin, Leonard, Schäfer, Ralf B., Schmidt-Kloiber, Astrid, Scotti, Alberto, Shen, Longzhu Q., Skuja, Agnija, Stoll, Stefan, Straka, Michal, Stubbington, Rachel, Timm, Henn, Tyufekchieva, Violeta G., Tziortzis, Iakovos, Uzunov, Yordan, van der Lee, Gea H., Vannevel, Rudy, Varadinova, Emilia, Várbíró, Gábor, Velle, Gaute, Verdonschot, Piet F. M., Verdonschot, Ralf C. M., Vidinova, Yanka, Wiberg-Larsen, Peter, and Haase, Peter

Published
2024
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3. The recovery of European freshwater biodiversity has come to a halt

Author

Haase, Peter, Bowler, Diana E., Baker, Nathan J., Bonada, Núria, Domisch, Sami, Garcia Marquez, Jaime R., Heino, Jani, Hering, Daniel, Jähnig, Sonja C., Schmidt-Kloiber, Astrid, Stubbington, Rachel, Altermatt, Florian, Álvarez-Cabria, Mario, Amatulli, Giuseppe, Angeler, David G., Archambaud-Suard, Gaït, Jorrín, Iñaki Arrate, Aspin, Thomas, Azpiroz, Iker, Bañares, Iñaki, Ortiz, José Barquín, Bodin, Christian L., Bonacina, Luca, Bottarin, Roberta, Cañedo-Argüelles, Miguel, Csabai, Zoltán, Datry, Thibault, de Eyto, Elvira, Dohet, Alain, Dörflinger, Gerald, Drohan, Emma, Eikland, Knut A., England, Judy, Eriksen, Tor E., Evtimova, Vesela, Feio, Maria J., Ferréol, Martial, Floury, Mathieu, Forcellini, Maxence, Forio, Marie Anne Eurie, Fornaroli, Riccardo, Friberg, Nikolai, Fruget, Jean-François, Georgieva, Galia, Goethals, Peter, Graça, Manuel A. S., Graf, Wolfram, House, Andy, Huttunen, Kaisa-Leena, Jensen, Thomas C., Johnson, Richard K., Jones, J. Iwan, Kiesel, Jens, Kuglerová, Lenka, Larrañaga, Aitor, Leitner, Patrick, L’Hoste, Lionel, Lizée, Marie-Helène, Lorenz, Armin W., Maire, Anthony, Arnaiz, Jesús Alberto Manzanos, McKie, Brendan G., Millán, Andrés, Monteith, Don, Muotka, Timo, Murphy, John F., Ozolins, Davis, Paavola, Riku, Paril, Petr, Peñas, Francisco J., Pilotto, Francesca, Polášek, Marek, Rasmussen, Jes Jessen, Rubio, Manu, Sánchez-Fernández, David, Sandin, Leonard, Schäfer, Ralf B., Scotti, Alberto, Shen, Longzhu Q., Skuja, Agnija, Stoll, Stefan, Straka, Michal, Timm, Henn, Tyufekchieva, Violeta G., Tziortzis, Iakovos, Uzunov, Yordan, van der Lee, Gea H., Vannevel, Rudy, Varadinova, Emilia, Várbíró, Gábor, Velle, Gaute, Verdonschot, Piet F. M., Verdonschot, Ralf C. M., Vidinova, Yanka, Wiberg-Larsen, Peter, and Welti, Ellen A. R.

Published
2023
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6. Time series of freshwater macroinvertebrate abundances and site characteristics of European streams and rivers

Author

European Commision, 0000-0001-6944-3422, 0000-0002-4831-6958, 0000-0001-9493-2279, 0000-0002-2983-3335, 0000-0002-6352-3699, 0000-0003-3864-7451, 0000-0003-1390-6736, 0000-0003-2281-2491, 0000-0003-2962-7387, 0000-0002-8127-9335, 0000-0003-0209-4648, 0000-0001-5037-7509, 0000-0001-6675-4751, 0000-0001-7979-6563, 0000-0002-0185-9154, 0000-0003-0239-9468, 0000-0002-3262-6396, 0000-0003-0920-773X, 0000-0003-0036-363X, 0000-0003-3752-2040, 0000-0002-7471-997X, 0000-0003-3213-7135, 0000-0003-3510-1701, 0000-0001-5629-3007, 0000-0001-8475-5109, 0000-0002-9315-7773, 0000-0002-5603-271X, 0000-0002-4126-7452, 0000-0002-9340-0438, Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72], Welti, Ellen A. R., Bowler, Diana E., Sinclair, James S, Altermatt, Florian, Álvarez-Cabria, Mario, Amatulli, Giuseppe, Angeler, David G., Archambaud, Gaït, Arrate Jorrín, Iñaki, Aspin, Thomas, Azpiroz, Iker, Baker, Nathan Jay, Bañares, Iñaki, Barquín Ortiz, José, Bodin, Christian L., Bonacina, Luca, Bonada, Núria, Bottarin, Roberta, Cañedo-Argüelles, Miguel, Csabai, Zoltán, Datry, Thibault, de Eyto, Elvira, Dohet, Alain, Domisch, Sami, Dörflinger, Gerald, Drohan, Emma, Eikland, Knut A, England, Judy, Eriksen, Tor E, Evtimova, Vesela, Feio, Maria J., Ferréol, Martial, Floury, Mathieu, Forcellini, Maxence, Forio, Marie Anne Eurie, Fornaroli, Riccardo, Friberg, Nikolai, Fruget, Jean-François, Garcia Marquez, Jaime R., Georgieva, Galia, Goethals, Peter, Graça, Manuel A. S., House, Andy, Huttunen, Kaisa-Leena, Jensen, Thomas Correll, Johnson, Richard K., Jones, J Iwan, Kiesel, Jens, Larrañaga, Aitor, Leitner, Patrick, L'Hoste, Lionel, Lizée, Marie-Hélène, Lorenz, Armin W., Maire, Anthony, Manzanos Arnaiz, Jesús Alberto, Mckie, Brendan, Millán, Andrés, Muotka, Timo, Murphy, John F., Ozolins, Davis, Paavola, Riku, Paril, Petr, Peñas Silva, Francisco Jesús, Polasek, Marek, Rasmussen, Jes, Rubio, Manu, Sánchez Fernández, David, Sandin, Leonard, Schäfer, Ralf B., Schmidt-Kloiber, Astrid, Scotti, Alberto, Shen, Longzhu Q., Skuja, Agnija, Stoll, Stefan, Straka, Michal, Stubbington, Rachel, Timm, Henn, Tyufekchieva, Violeta G., Tziortzis, Iakovos, Uzunov, Yordan, van der Lee, Gea H., Vannevel, Rudy, Varadinova, Emilia, Várbíró, Gábor, Velle, Gaute, Verdonschot, Piet F. M., Verdonschot, Ralf C. M., Vidinova, Yanka, Wiberg-Larsen, Peter, Haase, Peter, European Commision, 0000-0001-6944-3422, 0000-0002-4831-6958, 0000-0001-9493-2279, 0000-0002-2983-3335, 0000-0002-6352-3699, 0000-0003-3864-7451, 0000-0003-1390-6736, 0000-0003-2281-2491, 0000-0003-2962-7387, 0000-0002-8127-9335, 0000-0003-0209-4648, 0000-0001-5037-7509, 0000-0001-6675-4751, 0000-0001-7979-6563, 0000-0002-0185-9154, 0000-0003-0239-9468, 0000-0002-3262-6396, 0000-0003-0920-773X, 0000-0003-0036-363X, 0000-0003-3752-2040, 0000-0002-7471-997X, 0000-0003-3213-7135, 0000-0003-3510-1701, 0000-0001-5629-3007, 0000-0001-8475-5109, 0000-0002-9315-7773, 0000-0002-5603-271X, 0000-0002-4126-7452, 0000-0002-9340-0438, Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72], Welti, Ellen A. R., Bowler, Diana E., Sinclair, James S, Altermatt, Florian, Álvarez-Cabria, Mario, Amatulli, Giuseppe, Angeler, David G., Archambaud, Gaït, Arrate Jorrín, Iñaki, Aspin, Thomas, Azpiroz, Iker, Baker, Nathan Jay, Bañares, Iñaki, Barquín Ortiz, José, Bodin, Christian L., Bonacina, Luca, Bonada, Núria, Bottarin, Roberta, Cañedo-Argüelles, Miguel, Csabai, Zoltán, Datry, Thibault, de Eyto, Elvira, Dohet, Alain, Domisch, Sami, Dörflinger, Gerald, Drohan, Emma, Eikland, Knut A, England, Judy, Eriksen, Tor E, Evtimova, Vesela, Feio, Maria J., Ferréol, Martial, Floury, Mathieu, Forcellini, Maxence, Forio, Marie Anne Eurie, Fornaroli, Riccardo, Friberg, Nikolai, Fruget, Jean-François, Garcia Marquez, Jaime R., Georgieva, Galia, Goethals, Peter, Graça, Manuel A. S., House, Andy, Huttunen, Kaisa-Leena, Jensen, Thomas Correll, Johnson, Richard K., Jones, J Iwan, Kiesel, Jens, Larrañaga, Aitor, Leitner, Patrick, L'Hoste, Lionel, Lizée, Marie-Hélène, Lorenz, Armin W., Maire, Anthony, Manzanos Arnaiz, Jesús Alberto, Mckie, Brendan, Millán, Andrés, Muotka, Timo, Murphy, John F., Ozolins, Davis, Paavola, Riku, Paril, Petr, Peñas Silva, Francisco Jesús, Polasek, Marek, Rasmussen, Jes, Rubio, Manu, Sánchez Fernández, David, Sandin, Leonard, Schäfer, Ralf B., Schmidt-Kloiber, Astrid, Scotti, Alberto, Shen, Longzhu Q., Skuja, Agnija, Stoll, Stefan, Straka, Michal, Stubbington, Rachel, Timm, Henn, Tyufekchieva, Violeta G., Tziortzis, Iakovos, Uzunov, Yordan, van der Lee, Gea H., Vannevel, Rudy, Varadinova, Emilia, Várbíró, Gábor, Velle, Gaute, Verdonschot, Piet F. M., Verdonschot, Ralf C. M., Vidinova, Yanka, Wiberg-Larsen, Peter, and Haase, Peter

Abstract

Freshwater macroinvertebrates are a diverse group and play key ecological roles, including accelerating nutrient cycling, filtering water, controlling primary producers, and providing food for predators. Their differences in tolerances and short generation times manifest in rapid community responses to change. Macroinvertebrate community composition is an indicator of water quality. In Europe, efforts to improve water quality following environmental legislation, primarily starting in the 1980s, may have driven a recovery of macroinvertebrate communities. Towards understanding temporal and spatial variation of these organisms, we compiled the TREAM dataset (Time seRies of European freshwAter Macroinvertebrates), consisting of macroinvertebrate community time series from 1,816 river and stream sites (mean length of 19.2 years and 14.9 sampling years) of 22 European countries sampled between 1968 and 2020. In total, the data include >93 million sampled individuals of 2,648 taxa from 959 genera and 212 families. These data can be used to test questions ranging from identifying drivers of the population dynamics of specific taxa to assessing the success of legislative and management restoration efforts.

Published
2024

23. The recovery of European freshwater biodiversity has come to a halt

Author

0000-0002-9340-0438, 0000-0002-7775-1668, 0000-0001-7948-106X, 0000-0002-8127-9335, 0000-0003-1235-6613, 0000-0002-6349-9561, 0000-0001-8839-5913, 0000-0002-4831-6958, 0000-0003-2709-5030, 0000-0003-2197-7470, 0000-0003-1897-2636, 0000-0002-4695-5932, 0000-0002-6352-3699, 0000-0003-3864-7451, 0000-0003-1700-2574, 0000-0003-2281-2491, 0000-0003-2962-7387, 0000-0003-0209-4648, 0000-0002-3391-3100, 0000-0001-5037-7509, 0000-0001-5247-4812, 0000-0003-2033-6399, 0000-0002-6358-8011, 0000-0003-0362-6802, 0000-0001-6740-3654, 0000-0002-4952-5807, 0000-0003-4921-2189, 0000-0001-6326-5653, 0000-0003-3367-3802, 0000-0002-6470-8919, 0000-0003-0488-1274, 0000-0003-2777-2759, 0000-0002-7238-2509, 0000-0002-4371-6434, 0000-0003-0239-9468, 0000-0002-3262-6396, 0000-0003-0920-773X, 0000-0003-3219-1772, 0000-0003-2102-7686, 0000-0003-3752-2040, 0000-0002-4708-1413, 0000-0002-7471-997X, 0000-0003-1848-3154, 0000-0003-3213-7135, 0000-0002-5932-3125, 0000-0001-5225-9557, 0000-0003-1766-0761, 0000-0003-3510-1701, 0000-0002-3656-417X, 0000-0001-9324-0430, 0000-0002-9315-7773, 0000-0002-8731-682X, 0000-0002-2382-9191, 0000-0001-5907-3472, 0000-0002-5603-271X, 0000-0002-4126-7452, 0000-0002-0977-5975, 0000-0002-6438-2349, 0000-0001-6944-3422, Haase, Peter, Bowler, Diana E., Baker, Nathan J., Bonada, Núria, Domisch, Sami, Garcia Marquez, Jaime R., Heino, Jani, Hering, Daniel, Jähnig, Sonja C., Schmidt-Kloiber, Astrid, Stubbington, Rachel, Altermatt, Florian, Álvarez-Cabria, Mario, Amatulli, Giuseppe, Angeler, David G., Archambaud-Suard, Gaït, Jorrín, Iñaki Arrate, Aspin, Thomas, Azpiroz, Iker, Bañares, Iñaki, Ortiz, José Barquín, Bodin, Christian L., Bonacina, Luca, Bottarin, Roberta, Cañedo-Argüelles, Miguel, Csabai, Zoltán, Datry, Thibault, de Eyto, Elvira, Dohet, Alain, Dörflinger, Gerald, Drohan, Emma, Eikland, Knut A., England, Judy, Eriksen, Tor E., Evtimova, Vesela, Feio, Maria J., Ferréol, Martial, Floury, Mathieu, Forcellini, Maxence, Forio, Marie Anne Eurie, Fornaroli, Riccardo, Friberg, Nikolai, Fruget, Jean-François, Georgieva, Galia, Goethals, Peter, Graça, Manuel A. S., Graf, Wolfram, House, Andy, Huttunen, Kaisa-Leena, Jensen, Thomas C., Johnson, Richard K, Jones, J Iwan, Kiesel, Jens, Kuglerová, Lenka, Larrañaga, Aitor, Leitner, Patrick, L'Hoste, Lionel, Lizée, Marie-Helène, Lorenz, Armin W., Maire, Anthony, Arnaiz, Jesús Alberto Manzanos, McKie, Brendan G., Millán, Andrés, Monteith, Don, Muotka, Timo, Murphy, John F., Ozolins, Davis, Paavola, Riku, Paril, Petr, Peñas, Francisco J., Pilotto, Francesca, Polášek, Marek, Rasmussen, Jes Jessen, Rubio, Manu, Sánchez-Fernández, David, Sandin, Leonard, Schäfer, Ralf B., Scotti, Alberto, Shen, Longzhu Q., Skuja, Agnija, Stoll, Stefan, Straka, Michal, Timm, Henn, Tyufekchieva, Violeta G., Tziortzis, Iakovos, Uzunov, Yordan, van der Lee, Gea H., Vannevel, Rudy, Varadinova, Emilia, Várbíró, Gábor, Velle, Gaute, Verdonschot, Piet F. M., Verdonschot, Ralf C. M., Vidinova, Yanka, Wiberg-Larsen, Peter, Welti, Ellen A. R., 0000-0002-9340-0438, 0000-0002-7775-1668, 0000-0001-7948-106X, 0000-0002-8127-9335, 0000-0003-1235-6613, 0000-0002-6349-9561, 0000-0001-8839-5913, 0000-0002-4831-6958, 0000-0003-2709-5030, 0000-0003-2197-7470, 0000-0003-1897-2636, 0000-0002-4695-5932, 0000-0002-6352-3699, 0000-0003-3864-7451, 0000-0003-1700-2574, 0000-0003-2281-2491, 0000-0003-2962-7387, 0000-0003-0209-4648, 0000-0002-3391-3100, 0000-0001-5037-7509, 0000-0001-5247-4812, 0000-0003-2033-6399, 0000-0002-6358-8011, 0000-0003-0362-6802, 0000-0001-6740-3654, 0000-0002-4952-5807, 0000-0003-4921-2189, 0000-0001-6326-5653, 0000-0003-3367-3802, 0000-0002-6470-8919, 0000-0003-0488-1274, 0000-0003-2777-2759, 0000-0002-7238-2509, 0000-0002-4371-6434, 0000-0003-0239-9468, 0000-0002-3262-6396, 0000-0003-0920-773X, 0000-0003-3219-1772, 0000-0003-2102-7686, 0000-0003-3752-2040, 0000-0002-4708-1413, 0000-0002-7471-997X, 0000-0003-1848-3154, 0000-0003-3213-7135, 0000-0002-5932-3125, 0000-0001-5225-9557, 0000-0003-1766-0761, 0000-0003-3510-1701, 0000-0002-3656-417X, 0000-0001-9324-0430, 0000-0002-9315-7773, 0000-0002-8731-682X, 0000-0002-2382-9191, 0000-0001-5907-3472, 0000-0002-5603-271X, 0000-0002-4126-7452, 0000-0002-0977-5975, 0000-0002-6438-2349, 0000-0001-6944-3422, Haase, Peter, Bowler, Diana E., Baker, Nathan J., Bonada, Núria, Domisch, Sami, Garcia Marquez, Jaime R., Heino, Jani, Hering, Daniel, Jähnig, Sonja C., Schmidt-Kloiber, Astrid, Stubbington, Rachel, Altermatt, Florian, Álvarez-Cabria, Mario, Amatulli, Giuseppe, Angeler, David G., Archambaud-Suard, Gaït, Jorrín, Iñaki Arrate, Aspin, Thomas, Azpiroz, Iker, Bañares, Iñaki, Ortiz, José Barquín, Bodin, Christian L., Bonacina, Luca, Bottarin, Roberta, Cañedo-Argüelles, Miguel, Csabai, Zoltán, Datry, Thibault, de Eyto, Elvira, Dohet, Alain, Dörflinger, Gerald, Drohan, Emma, Eikland, Knut A., England, Judy, Eriksen, Tor E., Evtimova, Vesela, Feio, Maria J., Ferréol, Martial, Floury, Mathieu, Forcellini, Maxence, Forio, Marie Anne Eurie, Fornaroli, Riccardo, Friberg, Nikolai, Fruget, Jean-François, Georgieva, Galia, Goethals, Peter, Graça, Manuel A. S., Graf, Wolfram, House, Andy, Huttunen, Kaisa-Leena, Jensen, Thomas C., Johnson, Richard K, Jones, J Iwan, Kiesel, Jens, Kuglerová, Lenka, Larrañaga, Aitor, Leitner, Patrick, L'Hoste, Lionel, Lizée, Marie-Helène, Lorenz, Armin W., Maire, Anthony, Arnaiz, Jesús Alberto Manzanos, McKie, Brendan G., Millán, Andrés, Monteith, Don, Muotka, Timo, Murphy, John F., Ozolins, Davis, Paavola, Riku, Paril, Petr, Peñas, Francisco J., Pilotto, Francesca, Polášek, Marek, Rasmussen, Jes Jessen, Rubio, Manu, Sánchez-Fernández, David, Sandin, Leonard, Schäfer, Ralf B., Scotti, Alberto, Shen, Longzhu Q., Skuja, Agnija, Stoll, Stefan, Straka, Michal, Timm, Henn, Tyufekchieva, Violeta G., Tziortzis, Iakovos, Uzunov, Yordan, van der Lee, Gea H., Vannevel, Rudy, Varadinova, Emilia, Várbíró, Gábor, Velle, Gaute, Verdonschot, Piet F. M., Verdonschot, Ralf C. M., Vidinova, Yanka, Wiberg-Larsen, Peter, and Welti, Ellen A. R.

Abstract

Owing to a long history of anthropogenic pressures, freshwater ecosystems are among the most vulnerable to biodiversity loss1. Mitigation measures, including wastewater treatment and hydromorphological restoration, have aimed to improve environmental quality and foster the recovery of freshwater biodiversity2. Here, using 1,816 time series of freshwater invertebrate communities collected across 22 European countries between 1968 and 2020, we quantified temporal trends in taxonomic and functional diversity and their responses to environmental pressures and gradients. We observed overall increases in taxon richness (0.73% per year), functional richness (2.4% per year) and abundance (1.17% per year). However, these increases primarily occurred before the 2010s, and have since plateaued. Freshwater communities downstream of dams, urban areas and cropland were less likely to experience recovery. Communities at sites with faster rates of warming had fewer gains in taxon richness, functional richness and abundance. Although biodiversity gains in the 1990s and 2000s probably reflect the effectiveness of water-quality improvements and restoration projects, the decelerating trajectory in the 2010s suggests that the current measures offer diminishing returns. Given new and persistent pressures on freshwater ecosystems, including emerging pollutants, climate change and the spread of invasive species, we call for additional mitigation to revive the recovery of freshwater biodiversity.

Published
2023

29. Contrasting the roles of section length and instream habitat enhancement for river restoration success: a field study of 20 European restoration projects

Author

Hering, Daniel, Aroviita, Jukka, Baattrup-Pedersen, Annette, Brabec, Karel, Buijse, Tom, Ecke, Frauke, Friberg, Nikolai, Gielczewski, Marek, Januschke, Kathrin, Köhler, Jan, Kupilas, Benjamin, Lorenz, Armin W., Muhar, Susanne, Paillex, Amael, Poppe, Michaela, Schmidt, Torsten, Schmutz, Stefan, Vermaat, Jan, Verdonschot, Piet F. M., Verdonschot, Ralf C. M., Wolter, Christian, and Kail, Jochem

Published
2015

31. Wastewater treatment plant contaminant profiles affect macroinvertebrate sludge degradation

Author

van der Meer, Tom V, Verdonschot, Piet F M, van Eck, Lisa, Narain-Ford, Dominique M, Kraak, Michiel H S, Environmental Sciences, Freshwater and Marine Ecology (IBED, FNWI), and Environmental Sciences

Subjects
WIMEK, Water and Food, Environmental Engineering, Sewage, Macroinvertebrates, Ecological Modeling, Biotic interactions, Water en Voedsel, Stress gradient hypothesis, Wastewater, Waste Disposal, Fluid, Pollution, Waste treatment plants, Water Purification, Ecological Modelling, Excess sludge, Waste Management and Disposal, Civil and Structural Engineering, Water Science and Technology
Abstract

Disposal of the overwhelming amounts of excess wastewater treatment plant (WWTP) sludge is an increasing financial and environmental problem, and new methods to reduce the amount of excess sludge are therefore required. In the natural environment, interactions between multiple macroinvertebrate detritivores mediate the degradation of organic matter. Macroinvertebrates may thus also be able to degrade WWTP sludge, but may meanwhile be impacted by the associated contaminants. Therefore, the aim of the present study was to examine if WWTPs contaminant concentrations and profiles affect the biotic interactions and macroinvertebrate mediated degradation of sludge. Assessing degradation of sludge from three WWTPs differing in contaminant profile by (combinations of) three macroinvertebrate detritovore taxa, revealed that macroinvertebrate enhanced sludge degradation was WWTP and taxa combination specific. Yet, taxa combinations only had an additional positive effect on sludge degradation when compared to single taxa in sludge with a higher contaminant load. This was confirmed by the results of a Cu-spiked sludge degradation experiment, indicating a possible effect of biotic interactions. It was concluded that macroinvertebrates are a potential tool for the reduction of excess WWTP sludge, and that using multispecies assemblages of detritivorous macroinvertebrates may increase the resilience of this additional treatment step.

Published
2022

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