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4. Directional turnover towards larger-ranged plants over time and across habitats

Author

Staude, Ingmar R., Pereira, Henrique M., Daskalova, Gergana N., Bernhardt-Römermann, Markus, Diekmann, Martin, Pauli, Harald, Van Calster, Hans, Vellend, Mark, Björkman, Anne D., Brunet, Jörg, De Frenne, Pieter, Hédl, Radim, Jandt, Ute, Lenoir, Jonathan, Myers-Smith, Isla H., Verheyen, Kris, Wipf, Sonja, Wulf, Monika, Andrews, Christopher, Barančok, Peter, Barni, Elena, Benito-Alonso, José-Luis, Bennie, Jonathan, Berki, Imre, Blüml, Volker, Chudomelová, Markéta, Decocq, Guillaume, Dick, Jan, Dirnböck, Thomas, Durak, Tomasz, Eriksson, Ove, Erschbamer, Brigitta, Graae, Bente Jessen, Heinken, Thilo, Høistad Schei, Fride, Jaroszewicz, Bogdan, Kopecký, Martin, Kudernatsch, Thomas, Macek, Martin, Malicki, Marek, Máliš, František, Michelsen, Ottar, Naaf, Tobias, Nagel, Thomas A., Newton, Adrian C., Nicklas, Lena, Oddi, Ludovica, Ortmann-Ajkai, Adrienne, Palaj, Andrej, Petraglia, Alessandro, Petřík, Petr, Pielech, Remigiusz, Porro, Francesco, Puşcaş, Mihai, Reczyńska, Kamila, Rixen, Christian, Schmidt, Wolfgang, Standovár, Tibor, Steinbauer, Klaus, Świerkosz, Krzysztof, Teleki, Balázs, Theurillat, Jean-Paul, Turtureanu, Pavel Dan, Ursu, Tudor-Mihai, Vanneste, Thomas, Vergeer, Philippine, Vild, Ondřej, Villar, Luis, Vittoz, Pascal, Winkler, Manuela, Baeten, Lander, Staude, Ingmar R., Pereira, Henrique M., Daskalova, Gergana N., Bernhardt-Römermann, Markus, Diekmann, Martin, Pauli, Harald, Van Calster, Hans, Vellend, Mark, Björkman, Anne D., Brunet, Jörg, De Frenne, Pieter, Hédl, Radim, Jandt, Ute, Lenoir, Jonathan, Myers-Smith, Isla H., Verheyen, Kris, Wipf, Sonja, Wulf, Monika, Andrews, Christopher, Barančok, Peter, Barni, Elena, Benito-Alonso, José-Luis, Bennie, Jonathan, Berki, Imre, Blüml, Volker, Chudomelová, Markéta, Decocq, Guillaume, Dick, Jan, Dirnböck, Thomas, Durak, Tomasz, Eriksson, Ove, Erschbamer, Brigitta, Graae, Bente Jessen, Heinken, Thilo, Høistad Schei, Fride, Jaroszewicz, Bogdan, Kopecký, Martin, Kudernatsch, Thomas, Macek, Martin, Malicki, Marek, Máliš, František, Michelsen, Ottar, Naaf, Tobias, Nagel, Thomas A., Newton, Adrian C., Nicklas, Lena, Oddi, Ludovica, Ortmann-Ajkai, Adrienne, Palaj, Andrej, Petraglia, Alessandro, Petřík, Petr, Pielech, Remigiusz, Porro, Francesco, Puşcaş, Mihai, Reczyńska, Kamila, Rixen, Christian, Schmidt, Wolfgang, Standovár, Tibor, Steinbauer, Klaus, Świerkosz, Krzysztof, Teleki, Balázs, Theurillat, Jean-Paul, Turtureanu, Pavel Dan, Ursu, Tudor-Mihai, Vanneste, Thomas, Vergeer, Philippine, Vild, Ondřej, Villar, Luis, Vittoz, Pascal, Winkler, Manuela, and Baeten, Lander

Abstract

Species turnover is ubiquitous. However, it remains unknown whether certain types of species are consistently gained or lost across different habitats. Here, we analysed the trajectories of 1827 plant species over time intervals of up to 78 years at 141 sites across mountain summits, forests, and lowland grasslands in Europe. We found, albeit with relatively small effect sizes, displacements of smaller- by larger-ranged species across habitats. Communities shifted in parallel towards more nutrient-demanding species, with species from nutrient-rich habitats having larger ranges. Because these species are typically strong competitors, declines of smaller-ranged species could reflect not only abiotic drivers of global change, but also biotic pressure from increased competition. The ubiquitous component of turnover based on species range size we found here may partially reconcile findings of no net loss in local diversity with global species loss, and link community-scale turnover to macroecological processes such as biotic homogenisation.

Published
2022
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5. Directional turnover towards larger-ranged plants over time and across habitats

Author

German Centre for Integrative Biodiversity Research, Gobierno de Aragón, Junta de Castilla y León, Natural Environment Research Council (UK), European Commission, Austrian Science Fund, Slovak Research and Development Agency, Academy of Sciences of the Czech Republic, Ministry of Research and Innovation (Romania), Dutch Research Council, European Research Council, Austrian Academy of Sciences, Federal Office for the Environment (Switzerland), Swiss Federal Office of Education and Science, Swiss National Park, Swiss Academy of Sciences, Projekt DEAL, Benito Alonso, José Luis [0000-0003-1086-8834], Staude, Ingmar R., Pereira, Henrique M., Daskalova, Gergana N., Bernhardt-Römermann, Markus, Diekmann, Martin, Pauli, Harald, Calster, Hans Van, Vellend, Mark, Bjorkman, Anne D., Brunet, Jörg, De Frenne, Pieter, Hédl, Radim, Jandt, Ute, Lenoir, Jonathan, Myers-Smith, Isla H., Verheyen, Kris, Wipf, Sonja, Wulf, Monika, Andrews, Christopher, Barančok, Peter, Barni, Elena, Benito Alonso, José Luis, Bennie, Jonathan, Berki, Imre, Blüml, Volker, Chudomelová, Markéta, Decocq, Guillaume, Dick, Jan, Dirnböck, Thomas, Durak, Tomasz, Eriksson, Ove, Erschbamer, Brigitta, Graae, Bente Jessen, Heinken, Thilo, Schei, Fride Høistad, Jaroszewicz, Bogdan, Kopecký, Martin, Kudernatsch, Thomas, Macek, Martin, Malicki, Marek, Máliš, František, Michelsen, Ottar, Naaf, Tobias, Nagel, Thomas A., Newton, Adrian C., Nicklas, Lena, Oddi, Ludovica, Ortmann-Ajkai, Adrienne, Palaj, Andrej, Petraglia, Alessandro, Petřík, Petr, Pielech, Remigiusz, Porro, Francesco, Puşcaş, Mihai, Reczyńska, Kamila, Rixen, Christian, Schmidt, Wolfgang, Standovár, Tibor, Steinbauer, Klaus, Świerkosz, Krzysztof, Teleki, Balázs, Theurillat, Jean-Paul, Turtureanu, Pavel Dan, Ursu, Tudor-Mihai, Vanneste, Thomas, Vergeer, Philippine, Vild, Ondřej, Villar, Luis, Vittoz, Pascal, Winkler, Manuela, Baeten, Lander, German Centre for Integrative Biodiversity Research, Gobierno de Aragón, Junta de Castilla y León, Natural Environment Research Council (UK), European Commission, Austrian Science Fund, Slovak Research and Development Agency, Academy of Sciences of the Czech Republic, Ministry of Research and Innovation (Romania), Dutch Research Council, European Research Council, Austrian Academy of Sciences, Federal Office for the Environment (Switzerland), Swiss Federal Office of Education and Science, Swiss National Park, Swiss Academy of Sciences, Projekt DEAL, Benito Alonso, José Luis [0000-0003-1086-8834], Staude, Ingmar R., Pereira, Henrique M., Daskalova, Gergana N., Bernhardt-Römermann, Markus, Diekmann, Martin, Pauli, Harald, Calster, Hans Van, Vellend, Mark, Bjorkman, Anne D., Brunet, Jörg, De Frenne, Pieter, Hédl, Radim, Jandt, Ute, Lenoir, Jonathan, Myers-Smith, Isla H., Verheyen, Kris, Wipf, Sonja, Wulf, Monika, Andrews, Christopher, Barančok, Peter, Barni, Elena, Benito Alonso, José Luis, Bennie, Jonathan, Berki, Imre, Blüml, Volker, Chudomelová, Markéta, Decocq, Guillaume, Dick, Jan, Dirnböck, Thomas, Durak, Tomasz, Eriksson, Ove, Erschbamer, Brigitta, Graae, Bente Jessen, Heinken, Thilo, Schei, Fride Høistad, Jaroszewicz, Bogdan, Kopecký, Martin, Kudernatsch, Thomas, Macek, Martin, Malicki, Marek, Máliš, František, Michelsen, Ottar, Naaf, Tobias, Nagel, Thomas A., Newton, Adrian C., Nicklas, Lena, Oddi, Ludovica, Ortmann-Ajkai, Adrienne, Palaj, Andrej, Petraglia, Alessandro, Petřík, Petr, Pielech, Remigiusz, Porro, Francesco, Puşcaş, Mihai, Reczyńska, Kamila, Rixen, Christian, Schmidt, Wolfgang, Standovár, Tibor, Steinbauer, Klaus, Świerkosz, Krzysztof, Teleki, Balázs, Theurillat, Jean-Paul, Turtureanu, Pavel Dan, Ursu, Tudor-Mihai, Vanneste, Thomas, Vergeer, Philippine, Vild, Ondřej, Villar, Luis, Vittoz, Pascal, Winkler, Manuela, and Baeten, Lander

Abstract

Species turnover is ubiquitous. However, it remains unknown whether certain types of species are consistently gained or lost across different habitats. Here, we analysed the trajectories of 1827 plant species over time intervals of up to 78 years at 141 sites across mountain summits, forests, and lowland grasslands in Europe. We found, albeit with relatively small effect sizes, displacements of smaller- by larger-ranged species across habitats. Communities shifted in parallel towards more nutrient-demanding species, with species from nutrient-rich habitats having larger ranges. Because these species are typically strong competitors, declines of smaller-ranged species could reflect not only abiotic drivers of global change, but also biotic pressure from increased competition. The ubiquitous component of turnover based on species range size we found here may partially reconcile findings of no net loss in local diversity with global species loss, and link community-scale turnover to macroecological processes such as biotic homogenisation.

Published
2022

8. Directional turnover towards larger‐ranged plants over time and across habitats

Author

Staude, Ingmar R., primary, Pereira, Henrique M., additional, Daskalova, Gergana N., additional, Bernhardt‐Römermann, Markus, additional, Diekmann, Martin, additional, Pauli, Harald, additional, Van Calster, Hans, additional, Vellend, Mark, additional, Bjorkman, Anne D., additional, Brunet, Jörg, additional, De Frenne, Pieter, additional, Hédl, Radim, additional, Jandt, Ute, additional, Lenoir, Jonathan, additional, Myers‐Smith, Isla H., additional, Verheyen, Kris, additional, Wipf, Sonja, additional, Wulf, Monika, additional, Andrews, Christopher, additional, Barančok, Peter, additional, Barni, Elena, additional, Benito‐Alonso, José‐Luis, additional, Bennie, Jonathan, additional, Berki, Imre, additional, Blüml, Volker, additional, Chudomelová, Markéta, additional, Decocq, Guillaume, additional, Dick, Jan, additional, Dirnböck, Thomas, additional, Durak, Tomasz, additional, Eriksson, Ove, additional, Erschbamer, Brigitta, additional, Graae, Bente Jessen, additional, Heinken, Thilo, additional, Schei, Fride Høistad, additional, Jaroszewicz, Bogdan, additional, Kopecký, Martin, additional, Kudernatsch, Thomas, additional, Macek, Martin, additional, Malicki, Marek, additional, Máliš, František, additional, Michelsen, Ottar, additional, Naaf, Tobias, additional, Nagel, Thomas A., additional, Newton, Adrian C., additional, Nicklas, Lena, additional, Oddi, Ludovica, additional, Ortmann‐Ajkai, Adrienne, additional, Palaj, Andrej, additional, Petraglia, Alessandro, additional, Petřík, Petr, additional, Pielech, Remigiusz, additional, Porro, Francesco, additional, Puşcaş, Mihai, additional, Reczyńska, Kamila, additional, Rixen, Christian, additional, Schmidt, Wolfgang, additional, Standovár, Tibor, additional, Steinbauer, Klaus, additional, Świerkosz, Krzysztof, additional, Teleki, Balázs, additional, Theurillat, Jean‐Paul, additional, Turtureanu, Pavel Dan, additional, Ursu, Tudor‐Mihai, additional, Vanneste, Thomas, additional, Vergeer, Philippine, additional, Vild, Ondřej, additional, Villar, Luis, additional, Vittoz, Pascal, additional, Winkler, Manuela, additional, and Baeten, Lander, additional

Published
2021
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9. Consistent replacement of small- by large-ranged plant species across habitats

Author

Schmidt, Wolfgang, Michelsen, Ottar, Pauli, Harald, De Frenne, Pieter, Wulf, Monika, Bernhardt-Römermann, Markus, Daskalova, Gergana, Palaj, Andrej, Macek, Martin, Nagel, Thomas, Oddi, Ludovica, Naaf, Tobias, Bennie, Jonathan, Turtureanu, Pavel, Jaroszewicz, Bogdan, Vanneste, Thomas, Kudernatsch, Thomas, Blüml, Volker, Durak, Tomasz, Erschbamer, Brigitta, Vergeer, Philippine, Ursu, Tudor-Mihai, Graae, Bente, Pielech, Remigiusz, Bjorkman, Anne, Schei, Fride, Malicki, Marek, Standovár, Tibor, Andrews, Christopher, Porro, Francesco, Petřík, Petr, Pereira, Henrique, Jandt, Ute, Rixen, Christian, Wipf, Sonja, Myers-Smith, Isla, Lenoir, Jonathan, Hédl, Radim, Staude, Ingmar, Vellend, Mark, Chudomelová, Markéta, Barančok, Peter, Reczyńska, Kamila, Dick, Jan, Teleki, Balázs, Heinken, Thilo, Pușcaș, Mihai, Berki, Imre, Benito-Alonso, José-Luis, Vild, Ondřej, Máliš, František, Dirnböck, Thomas, Vittoz, Pascal, Winkler, Manuela, Świerkosz, Krzysztof, Theurillat, Jean-Paul, Verheyen, Kris, Brunet, Jörg, Decocq, Guillaume, Diekmann, Martin, Baeten, Lander, Barni, Elena, Eriksson, Ove, Newton, Adrian, Van Calster, Hans, Nicklas, Lena, Villar, Luis, Ortmann-Ajkai, Adrienne, Petraglia, Alessandro, Kopecký, Martin, and Steinbauer, Klaus

Subjects
bepress|Life Sciences, bepress|Life Sciences|Biodiversity
Abstract

The direction and magnitude of long-term changes in local plant species richness are highly variable among studies, while species turnover is ubiquitous. However, it is unknown whether the nature of species turnover is idiosyncratic or whether certain types of species are consistently gained or lost across different habitats. To address this question, we analyzed the trajectories of 1,827 vascular plant species over time intervals of up to 78 years at 141 sites in three habitats in Europe – mountain summits, forests, and lowland grasslands. Consistent across all habitats, we found that plant species with small geographic ranges tended to be replaced by species with large ranges, despite habitat-specific trends in species richness. Our results point to a predictable component of species turnover, likely explained by aspects of species’ niches correlated with geographic range size. Species with larger ranges tend to be associated with nutrient-rich sites and we found community composition shifts towards more nutrient-demanding species in all three habitats. Global changes involving increased resource availability are thus likely to favor large-ranged, nutrient-demanding species, which are typically strong competitors. Declines of small-ranged species could reflect not only abiotic drivers of global change, but also biotic pressure from increased competition. Our study highlights the need to consider the traits of species such as the geographic range size when predicting how ecological communities will respond to global change.

Published
2021

10. Directional turnover towards larger‐ranged plants over time and across habitats

Author

Staude, Ingmar R., Pereira, Henrique M., Daskalova, Gergana N., Bernhardt‐Römermann, Markus, Diekmann, Martin, Pauli, Harald, Van Calster, Hans, Vellend, Mark, Bjorkman, Anne D., Brunet, Jörg, De Frenne, Pieter, Hédl, Radim, Jandt, Ute, Lenoir, Jonathan, Myers‐Smith, Isla H., Verheyen, Kris, Wipf, Sonja, Wulf, Monika, Andrews, Christopher, Barančok, Peter, Barni, Elena, Benito‐Alonso, José‐Luis, Bennie, Jonathan, Berki, Imre, Blüml, Volker, Chudomelová, Markéta, Decocq, Guillaume, Dick, Jan, Dirnböck, Thomas, Durak, Tomasz, Eriksson, Ove, Erschbamer, Brigitta, Graae, Bente Jessen, Heinken, Thilo, Schei, Fride Høistad, Jaroszewicz, Bogdan, Kopecký, Martin, Kudernatsch, Thomas, Macek, Martin, Malicki, Marek, Máliš, František, Michelsen, Ottar, Naaf, Tobias, Nagel, Thomas A., Newton, Adrian C., Nicklas, Lena, Oddi, Ludovica, Ortmann‐Ajkai, Adrienne, Palaj, Andrej, Petraglia, Alessandro, Petřík, Petr, Pielech, Remigiusz, Porro, Francesco, Puşcaş, Mihai, Reczyńska, Kamila, Rixen, Christian, Schmidt, Wolfgang, Standovár, Tibor, Steinbauer, Klaus, Świerkosz, Krzysztof, Teleki, Balázs, Theurillat, Jean‐Paul, Turtureanu, Pavel Dan, Ursu, Tudor‐Mihai, Vanneste, Thomas, Vergeer, Philippine, Vild, Ondřej, Villar, Luis, Vittoz, Pascal, Winkler, Manuela, Baeten, Lander, Staude, Ingmar R., Pereira, Henrique M., Daskalova, Gergana N., Bernhardt‐Römermann, Markus, Diekmann, Martin, Pauli, Harald, Van Calster, Hans, Vellend, Mark, Bjorkman, Anne D., Brunet, Jörg, De Frenne, Pieter, Hédl, Radim, Jandt, Ute, Lenoir, Jonathan, Myers‐Smith, Isla H., Verheyen, Kris, Wipf, Sonja, Wulf, Monika, Andrews, Christopher, Barančok, Peter, Barni, Elena, Benito‐Alonso, José‐Luis, Bennie, Jonathan, Berki, Imre, Blüml, Volker, Chudomelová, Markéta, Decocq, Guillaume, Dick, Jan, Dirnböck, Thomas, Durak, Tomasz, Eriksson, Ove, Erschbamer, Brigitta, Graae, Bente Jessen, Heinken, Thilo, Schei, Fride Høistad, Jaroszewicz, Bogdan, Kopecký, Martin, Kudernatsch, Thomas, Macek, Martin, Malicki, Marek, Máliš, František, Michelsen, Ottar, Naaf, Tobias, Nagel, Thomas A., Newton, Adrian C., Nicklas, Lena, Oddi, Ludovica, Ortmann‐Ajkai, Adrienne, Palaj, Andrej, Petraglia, Alessandro, Petřík, Petr, Pielech, Remigiusz, Porro, Francesco, Puşcaş, Mihai, Reczyńska, Kamila, Rixen, Christian, Schmidt, Wolfgang, Standovár, Tibor, Steinbauer, Klaus, Świerkosz, Krzysztof, Teleki, Balázs, Theurillat, Jean‐Paul, Turtureanu, Pavel Dan, Ursu, Tudor‐Mihai, Vanneste, Thomas, Vergeer, Philippine, Vild, Ondřej, Villar, Luis, Vittoz, Pascal, Winkler, Manuela, and Baeten, Lander

Abstract

Species turnover is ubiquitous. However, it remains unknown whether certain types of species are consistently gained or lost across different habitats. Here, we analysed the trajectories of 1827 plant species over time intervals of up to 78 years at 141 sites across mountain summits, forests, and lowland grasslands in Europe. We found, albeit with relatively small effect sizes, displacements of smaller- by larger-ranged species across habitats. Communities shifted in parallel towards more nutrient-demanding species, with species from nutrient-rich habitats having larger ranges. Because these species are typically strong competitors, declines of smaller-ranged species could reflect not only abiotic drivers of global change, but also biotic pressure from increased competition. The ubiquitous component of turnover based on species range size we found here may partially reconcile findings of no net loss in local diversity with global species loss, and link community-scale turnover to macroecological processes such as biotic homogenisation.

Published
2021

12. Competitive dominance mediates the effects of topography on plant richness in a mountain grassland

Author

Filibeck, Goffredo, primary, Sperandii, Marta G., additional, Bragazza, Luca, additional, Bricca, Alessandro, additional, Chelli, Stefano, additional, Maccherini, Simona, additional, Wellstein, Camilla, additional, Conte, Antonio L., additional, Di Donatantonio, Marta, additional, Forte, T'ai G.W., additional, Lazzaro, Lorenzo, additional, Macchiavelli, Tania, additional, Maestri, Samuele, additional, Marchesini, Roberta, additional, Marignani, Michela, additional, Midolo, Gabriele, additional, Oddi, Ludovica, additional, Rosati, Leonardo, additional, Silan, Giulia, additional, and Cancellieri, Laura, additional

Published
2020
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13. Additional file 8: of Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis

Author

Carotenuto, Gennaro, Sciascia, Ivan, Oddi, Ludovica, Volpe, Veronica, and Genre, Andrea

Abstract

Maps of putative ploidy in the cortex of uninoculated and mycorrhizal roots of M. truncatula. Based on the Sturges rule analysis of all nuclear volume measures derived by 3D Object Counter (Additional file 7), four and eight ploidy classes were respectively identified in uninoculated (a) and mycorrhizal (b) sections. Panels show representative images. Scale bars = 50 μm (PDF 671 kb)

Published
2019
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14. Additional file 2: of Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis

Author

Carotenuto, Gennaro, Sciascia, Ivan, Oddi, Ludovica, Volpe, Veronica, and Genre, Andrea

Abstract

Schematic illustration showing how nuclear area and volume are detected by TrackMate method. (a) The nuclear blobs are tracked across the z-stack and tagged with univocal IDs. (b) All IDs associated with their diameters (red dashed lines) - sharing the same x-y centroid coordinates - are selected using an SQL analysis. The correspondent tridimensional image is created with Fiji 3D surface plot plugin. (c) The largest diameter (dMAX) was identified for each ID-tagged nucleus and used to estimate the equatorial plane area as π•(dMAX/2)2. (d) Based on the z-stack slice interval (1.5 μm, violet double arrow), nuclear volumes were calculated as ∑ i = 1 n Π • di 2 2 • 1.5 $$ \sum \limits_{i=1}^n\left[\left(\Pi \bullet {\left(\frac{\mathrm{di}}{2}\right)}^2\right)\bullet 1.5\right] $$ . Scale bars = 50 μm (a,b) 20 μm (c) (PDF 972 kb)

Published
2019
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15. Additional file 1: of Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis

Author

Carotenuto, Gennaro, Sciascia, Ivan, Oddi, Ludovica, Volpe, Veronica, and Genre, Andrea

Abstract

Descriptive statistics of nuclear areas and volumes measured by manual, TrackMate, Round Surface Detector and 3D Object Counter methods in mycorrhizal (Myc) and uninoculated (Ctr) root segments of wild-type M. truncatula; skewness and kurtosis values of the distribution curves obtained by a bootstrap resampling method of the nuclear areas and volumes detected by the different methods (PDF 46 kb)

Published
2019
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16. Additional file 5: of Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis

Author

Carotenuto, Gennaro, Sciascia, Ivan, Oddi, Ludovica, Volpe, Veronica, and Genre, Andrea

Abstract

Schematic illustration showing how nuclear volumes are detected using 3D Object Counter. (a) Original DAPI-stained image is spatially calibrated and adjusted in brightness and contrast. (b) A threshold was applied to define the limit intensity value separating the voxels between background voxels (intensities below the selected value) and objects voxels. (c) A 3D surface map containing only nuclear voxels is generated and the volume of each nucleus is calculated. (d) A merge between original z-stacks and 3D surface map is created. Scale bars = 50 μm (PDF 2518 kb)

Published
2019
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17. Additional file 7: of Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis

Author

Carotenuto, Gennaro, Sciascia, Ivan, Oddi, Ludovica, Volpe, Veronica, and Genre, Andrea

Abstract

Putative ploidy classes based on Sturges analysis of nuclear volume measures. All nuclear volumes measured with 3D Object Counter in 375x375x45μm z-stack projections from M. truncatula uninoculated (6 root sections, 594 nuclei) and mycorrhizal (6 root sections, 893 nuclei) ROC segments were clustered according to Sturges’ rule into 25 μm3 wide classes. Four classes were identified in uninoculated and eight in mycorrhizal sections; size limits and average volume ± standard deviation are presented for each class (PDF 29 kb)

Published
2019
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18. Additional file 6: of Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis

Author

Carotenuto, Gennaro, Sciascia, Ivan, Oddi, Ludovica, Volpe, Veronica, and Genre, Andrea

Abstract

Nuclear volume analysis of M. truncatula root cortex. Schematic illustration showing how nuclear volume detection is restricted to the cortical tissue by cropping (red box and right panel) the original z-stacks (left panel). The image dataset was then analysed using Fiji plugin 3D Object Counter, discriminating between the brighter nuclear voxels and the darker background. Scale bars = 50 μm (PDF 954 kb)

Published
2019
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19. Additional file 3: of Size matters: three methods for estimating nuclear size in mycorrhizal roots of Medicago truncatula by image analysis

Author

Carotenuto, Gennaro, Sciascia, Ivan, Oddi, Ludovica, Volpe, Veronica, and Genre, Andrea

Abstract

Schematic illustration showing how nuclei are detected by the automated digital image analysis method (Round Surface Detector). (a) Original DAPI-stained image is spatially calibrated. (b) Result of 8-bit conversion followed by adjustement of brightness and contrast of each frame with final 3D rendering. (c) Result after the increase of image quality by subtracting background and calibrating the threshold in order to obtain a mask. (d) Mask based on threshold is before blurred with a smooth (e) then adjusted by filling holes and separating linked objects with a watershed in order to define the nuclear borders. (f) Selection from E loaded into the original image where the surfaces are measured using a high circularity index (0,7–1). Scale bars = 50 μm (PDF 1789 kb)

Published
2019
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20. Directional turnover towards larger-ranged plants over time and across habitats.

Author

Staude IR, Pereira HM, Daskalova GN, Bernhardt-Römermann M, Diekmann M, Pauli H, Van Calster H, Vellend M, Bjorkman AD, Brunet J, De Frenne P, Hédl R, Jandt U, Lenoir J, Myers-Smith IH, Verheyen K, Wipf S, Wulf M, Andrews C, Barančok P, Barni E, Benito-Alonso JL, Bennie J, Berki I, Blüml V, Chudomelová M, Decocq G, Dick J, Dirnböck T, Durak T, Eriksson O, Erschbamer B, Graae BJ, Heinken T, Schei FH, Jaroszewicz B, Kopecký M, Kudernatsch T, Macek M, Malicki M, Máliš F, Michelsen O, Naaf T, Nagel TA, Newton AC, Nicklas L, Oddi L, Ortmann-Ajkai A, Palaj A, Petraglia A, Petřík P, Pielech R, Porro F, Puşcaş M, Reczyńska K, Rixen C, Schmidt W, Standovár T, Steinbauer K, Świerkosz K, Teleki B, Theurillat JP, Turtureanu PD, Ursu TM, Vanneste T, Vergeer P, Vild O, Villar L, Vittoz P, Winkler M, and Baeten L

Subjects
Ecosystem, Forests, Plants, Biodiversity, Grassland
Abstract

Species turnover is ubiquitous. However, it remains unknown whether certain types of species are consistently gained or lost across different habitats. Here, we analysed the trajectories of 1827 plant species over time intervals of up to 78 years at 141 sites across mountain summits, forests, and lowland grasslands in Europe. We found, albeit with relatively small effect sizes, displacements of smaller- by larger-ranged species across habitats. Communities shifted in parallel towards more nutrient-demanding species, with species from nutrient-rich habitats having larger ranges. Because these species are typically strong competitors, declines of smaller-ranged species could reflect not only abiotic drivers of global change, but also biotic pressure from increased competition. The ubiquitous component of turnover based on species range size we found here may partially reconcile findings of no net loss in local diversity with global species loss, and link community-scale turnover to macroecological processes such as biotic homogenisation., (© 2021 The Authors. Ecology Letters published by John Wiley & Sons Ltd.)

Published
2022
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