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1. Harmonised statistics and maps of forest biomass and increment in Europe

Author

Avitabile, Valerio, Pilli, Roberto, Migliavacca, Mirco, Duveiller, Gregory, Camia, Andrea, Blujdea, Viorel, Adolt, Radim, Alberdi, Iciar, Barreiro, Susana, Bender, Susann, Borota, Dragan, Bosela, Michal, Bouriaud, Olivier, Breidenbach, Johannes, Cañellas, Isabel, Čavlović, Jura, Colin, Antoine, Di Cosmo, Lucio, Donis, Janis, Fischer, Christoph, Freudenschuss, Alexandra, Fridman, Jonas, Gasparini, Patrizia, Gschwantner, Thomas, Hernández, Laura, Korhonen, Kari, Kulbokas, Gintaras, Kvist, Vivian, Latte, Nicolas, Lazdins, Andis, Lejeune, Philippe, Makovskis, Kristaps, Marin, Gheorghe, Maslo, Jan, Michorczyk, Artur, Mionskowski, Marcin, Morneau, François, Myszkowski, Marcin, Nagy, Kinga, Nilsson, Mats, Nord-Larsen, Thomas, Pantic, Damjan, Perin, Jerôme, Redmond, John, Rizzo, Maria, Šebeň, Vladimír, Skudnik, Mitja, Snorrason, Arnor, Sroga, Radosław, Stoyanov, Todor, Svensson, Arvid, Talarczyk, Andrzej, Teeuwen, Sander, Thürig, Esther, Uva, José, and Mubareka, Sarah

Published
2024
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2. Improved large-area forest increment information in Europe through harmonisation of National Forest Inventories

Author

Gschwantner, Thomas, primary, Riedel, Thomas, additional, Henning, Lea, additional, Adame, Patricia, additional, Adolt, Radim, additional, Aguirre, Ana, additional, Alberdi, Iciar, additional, Avitabile, Valerio, additional, Cañellas, Isabel, additional, Di Cosmo, Lucio, additional, Fischer, Christoph, additional, Freudenschuß, Alexandra, additional, Gasparini, Patrizia, additional, Henttonen, Helena M., additional, Korhonen, Kari T., additional, Kučera, Miloš, additional, Marin, Gheorghe, additional, Máslo, Jan, additional, Mionskowski, Marcin, additional, Morneau, François, additional, Mubareka, Sarah, additional, Neagu, Stefan, additional, Nilsson, Mats, additional, Pesty, Benoit, additional, Schadauer, Klemens, additional, Sroga, Radosław, additional, Talarczyk, Andrzej, additional, and Westerlund, Bertil, additional

Published
2024
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3. Improved large-area forest increment information in Europe through harmonisation of National Forest Inventories

Author

European Commission, Gschwantner, Thomas [0000-0001-9043-6884], Adame, P. [0000-0002-0559-8713], Aguirre, Ana [0000-0001-7723-2078], Alberdi, Iciar [0000-0003-1338-8465], Avitabile, V. [0000-0003-3646-052X], Cañellas, Isabel [0000-0002-9716-7776], Di Cosmo, Lucio [0000-0002-0611-1292], Freudenschuss, A. [0000-0002-6080-2051], Gasparini, P. [0000-0001-8801-0980], Korhonen, Kari T. [0000-0002-6198-853X], Marin, Gheorghe [0000-0003-2720-3038], Maslo, Jan [0009-0001-2188-1105], Mionskowski, Marcin [0000-0002-9222-521X], Morneau, François [0000-0002-6145-6031], Mubareka, S.[0000-0001-9504-4409], Schadauer, K. [0009-0007-9292-7004], Talarczyk, Andrzej [0000-0001-9073-4136], Westerlund, Bertil [0000-0002-1073-8434], Gschwantner, Thomas, Riedel, Thomas, Henning, Lea, Adame, P., Adolt, Radim, Aguirre, Ana, Alberdi, Iciar, Avitabile, V., Cañellas, Isabel, Di Cosmo, Lucio, Fischer, Christoph, Freudenschuss, A., Gasparini, P., Henttonen, Helena M., Korhonen, Kari T., Kucera, Milos, Marin, Gheorghe, Maslo, Jan, Mionskowski, Marcin, Morneau, François, Mubareka, S., Neagu, Stefan, Nilsson, Mats, Pesty, B., Schadauer, K., Sroga, Radosław, Talarczyk, Andrzej, Westerlund, Bertil, European Commission, Gschwantner, Thomas [0000-0001-9043-6884], Adame, P. [0000-0002-0559-8713], Aguirre, Ana [0000-0001-7723-2078], Alberdi, Iciar [0000-0003-1338-8465], Avitabile, V. [0000-0003-3646-052X], Cañellas, Isabel [0000-0002-9716-7776], Di Cosmo, Lucio [0000-0002-0611-1292], Freudenschuss, A. [0000-0002-6080-2051], Gasparini, P. [0000-0001-8801-0980], Korhonen, Kari T. [0000-0002-6198-853X], Marin, Gheorghe [0000-0003-2720-3038], Maslo, Jan [0009-0001-2188-1105], Mionskowski, Marcin [0000-0002-9222-521X], Morneau, François [0000-0002-6145-6031], Mubareka, S.[0000-0001-9504-4409], Schadauer, K. [0009-0007-9292-7004], Talarczyk, Andrzej [0000-0001-9073-4136], Westerlund, Bertil [0000-0002-1073-8434], Gschwantner, Thomas, Riedel, Thomas, Henning, Lea, Adame, P., Adolt, Radim, Aguirre, Ana, Alberdi, Iciar, Avitabile, V., Cañellas, Isabel, Di Cosmo, Lucio, Fischer, Christoph, Freudenschuss, A., Gasparini, P., Henttonen, Helena M., Korhonen, Kari T., Kucera, Milos, Marin, Gheorghe, Maslo, Jan, Mionskowski, Marcin, Morneau, François, Mubareka, S., Neagu, Stefan, Nilsson, Mats, Pesty, B., Schadauer, K., Sroga, Radosław, Talarczyk, Andrzej, and Westerlund, Bertil

Abstract

Consistent knowledge about the increment in European forests gained amplified importance in European policies and decision processes related to forest-based bioeconomy, carbon sequestration, sustainable forest management and environmental changes. Until now, large-area increment information from European countries was lacking international comparability. In this study we present a harmonisation framework in accordance with the principles and the approach established for the harmonisation of National Forest Inventories (NFIs) in Europe. 11 European NFIs, representing a broad range of increment measurement and estimation methods, developed unified reference definitions and methods that were subsequently implemented to provide harmonised increment estimates by NUTS regions (Nomenclature of territorial units for statistics of the European Union), main forest types and tree species groups, and to rate the impact of harmonisation measures. The main emphasis was on gross annual increment (GAI), however, also annual natural losses (ANL) and net annual increment (NAI) were estimated. The data from the latest available NFI cycles were processed. The participating countries represent a forest area of about 130 million ha, and 82% of the European Unions’ (EU) forest area, respectively. The increments were estimated in terms of volume (m³ year−1, m³ ha−1 year−1) and above-ground biomass (t year−1, t ha−1 year−1). The harmonised GAI volume estimates deviate in a range of +12.3% to −26.5% from the estimates according to the national definitions and estimation methods. Within the study area, the harmonised estimates show a considerable range over the NUTS regions for GAI, from 0.6 to 12.3 m³ ha−1 year−1, and 0.8–6.4 t ha−1 year−1, of volume and above-ground biomass, respectively. The largest increment estimates are found in Central Europe and gradually decrease towards the North, South, West and East. In most countries coniferous forests show larger increment estimates per hectare

Published
2024

4. Harmonised statistics and maps of forest biomass and increment in Europe

Author

European Commission, Avitabile, V. [0000-0003-3646-052X], Pilli, Roberto [0000-0003-4541-7056], Migliavacca, Mirco [0000-0003-3546-8407], Duveiller, Gregory [0000-0002-6471-8404], Blujdea, V. [0000-0002-7932-8484], Alberdi, Iciar [0000-0003-1338-8465], Barreiro, Susana [0000-0003-0174-854X], Bender, Susann [0000-0002-3029-9475], Borota, Dragan [0000-0001-6825-2085], Bosela, Michal [0000-0001-6706-8614], Bouriaud, Olivier [0000-0002-8046-466X], Cañellas, Isabel [0000-0002-9716-7776], Di Cosmo, Lucio [0000-0002-0611-1292], Donis, Janis [0000-0002-3365-0566], Fischer, Christoph [0000-0002-7202-148X], Freudenschuss, A. [0000-0002-6080-2051], Fridman, Jonas [0000-0002-8295-665X], Gasparini, P. [0000-0003-2298-770X], Gschwantner, Thomas [0000-0001-9043-6884], Hernández, Laura [0000-0002-0915-9830], Korhonen, Kari T. [0000-0002-6198-853X], Kulbokas, Gintaras [0009-0009-9805-7411], Kvist, Vivian [0000-0002-1268-9787], Latte, Nicolas [0000-0002-3822-315X], Lazdins, Andis [0000-0002-7169-2011], Lejeune, Philippe [0000-0001-9987-9673], Makovskis, Kristaps [0000-0003-4943-1912], Marin, Gheorghe [0000-0003-2720-3038], Maslo, Jan [0009-0001-2188-1105], Mionskowski, Marcin [0000-0002-9222-521X], Morneau, François [0000-0002-6145-6031], Myszkowski, Marcin [0009-0009-8192-1912], Nagy, Kinga [0000-0002-0582-7133], Nord-Larsen, Thomas [0000-0002-5341-6435], Pantic, Damjan [0000-0003-2523-9619], Perin, Jerôme [0000-0001-7463-2615], Sebeň, Vladimír [0000-0003-3692-446X], Skudnik, Mitja [0000-0002-4120-6748], Snorrason, A. [0000-0002-7184-6826], Stoyanov, Todor [0000-0002-1276-6527], Talarczyk, Andrzej [0000-0001-9073-4136], Thürig, E. [0000-0002-7942-0395], Uva, José [0000-0003-1990-0888], Mubareka, S. [0000-0001-9504-4409], Avitabile, V., Pilli, Roberto, Migliavacca, Mirco, Duveiller, Gregory, Camia, Andrea, Blujdea, V., Adolt, Radim, Alberdi, Iciar, Barreiro, Susana, Bender, Susann, Borota, Dragan, Bosela, Michal, Bouriaud, Olivier, Breidenbach, Johannes, Cañellas, Isabel, Čavlović, Jura, Colin, A., Di Cosmo, Lucio, Donis, Janis, Fischer, Christoph, Freudenschuss, A., Fridman, Jonas, Gasparini, P., Gschwantner, Thomas, Hernández, Laura, Korhonen, Kari T., Kulbokas, Gintaras, Kvist, Vivian, Latte, Nicolas, Lazdins, Andis, Lejeune, Philippe, Makovskis, Kristaps, Marin, Gheorghe, Maslo, Jan, Michorczyk, Artur, Mionskowski, Marcin, Morneau, François, Myszkowski, Marcin, Nagy, Kinga, Nilsson, Mats, Nord-Larsen, Thomas, Pantic, Damjan, Perin, Jerôme, Redmond, John, Rizzo, M., Sebeň, Vladimír, Skudnik, Mitja, Snorrason, A., Sroga, Radosław, Stoyanov, Todor, Svensson, Arvid, Talarczyk, Andrzej, Teeuwen, Sander, Thürig, E., Uva, José, Mubareka, S., European Commission, Avitabile, V. [0000-0003-3646-052X], Pilli, Roberto [0000-0003-4541-7056], Migliavacca, Mirco [0000-0003-3546-8407], Duveiller, Gregory [0000-0002-6471-8404], Blujdea, V. [0000-0002-7932-8484], Alberdi, Iciar [0000-0003-1338-8465], Barreiro, Susana [0000-0003-0174-854X], Bender, Susann [0000-0002-3029-9475], Borota, Dragan [0000-0001-6825-2085], Bosela, Michal [0000-0001-6706-8614], Bouriaud, Olivier [0000-0002-8046-466X], Cañellas, Isabel [0000-0002-9716-7776], Di Cosmo, Lucio [0000-0002-0611-1292], Donis, Janis [0000-0002-3365-0566], Fischer, Christoph [0000-0002-7202-148X], Freudenschuss, A. [0000-0002-6080-2051], Fridman, Jonas [0000-0002-8295-665X], Gasparini, P. [0000-0003-2298-770X], Gschwantner, Thomas [0000-0001-9043-6884], Hernández, Laura [0000-0002-0915-9830], Korhonen, Kari T. [0000-0002-6198-853X], Kulbokas, Gintaras [0009-0009-9805-7411], Kvist, Vivian [0000-0002-1268-9787], Latte, Nicolas [0000-0002-3822-315X], Lazdins, Andis [0000-0002-7169-2011], Lejeune, Philippe [0000-0001-9987-9673], Makovskis, Kristaps [0000-0003-4943-1912], Marin, Gheorghe [0000-0003-2720-3038], Maslo, Jan [0009-0001-2188-1105], Mionskowski, Marcin [0000-0002-9222-521X], Morneau, François [0000-0002-6145-6031], Myszkowski, Marcin [0009-0009-8192-1912], Nagy, Kinga [0000-0002-0582-7133], Nord-Larsen, Thomas [0000-0002-5341-6435], Pantic, Damjan [0000-0003-2523-9619], Perin, Jerôme [0000-0001-7463-2615], Sebeň, Vladimír [0000-0003-3692-446X], Skudnik, Mitja [0000-0002-4120-6748], Snorrason, A. [0000-0002-7184-6826], Stoyanov, Todor [0000-0002-1276-6527], Talarczyk, Andrzej [0000-0001-9073-4136], Thürig, E. [0000-0002-7942-0395], Uva, José [0000-0003-1990-0888], Mubareka, S. [0000-0001-9504-4409], Avitabile, V., Pilli, Roberto, Migliavacca, Mirco, Duveiller, Gregory, Camia, Andrea, Blujdea, V., Adolt, Radim, Alberdi, Iciar, Barreiro, Susana, Bender, Susann, Borota, Dragan, Bosela, Michal, Bouriaud, Olivier, Breidenbach, Johannes, Cañellas, Isabel, Čavlović, Jura, Colin, A., Di Cosmo, Lucio, Donis, Janis, Fischer, Christoph, Freudenschuss, A., Fridman, Jonas, Gasparini, P., Gschwantner, Thomas, Hernández, Laura, Korhonen, Kari T., Kulbokas, Gintaras, Kvist, Vivian, Latte, Nicolas, Lazdins, Andis, Lejeune, Philippe, Makovskis, Kristaps, Marin, Gheorghe, Maslo, Jan, Michorczyk, Artur, Mionskowski, Marcin, Morneau, François, Myszkowski, Marcin, Nagy, Kinga, Nilsson, Mats, Nord-Larsen, Thomas, Pantic, Damjan, Perin, Jerôme, Redmond, John, Rizzo, M., Sebeň, Vladimír, Skudnik, Mitja, Snorrason, A., Sroga, Radosław, Stoyanov, Todor, Svensson, Arvid, Talarczyk, Andrzej, Teeuwen, Sander, Thürig, E., Uva, José, and Mubareka, S.

Abstract

Forest biomass is an essential resource in relation to the green transition and its assessment is key for the sustainable management of forest resources. Here, we present a forest biomass dataset for Europe based on the best available inventory and satellite data, with a higher level of harmonisation and spatial resolution than other existing data. This database provides statistics and maps of the forest area, biomass stock and their share available for wood supply in the year 2020, and statistics on gross and net volume increment in 2010-2020, for 38 European countries. The statistics of most countries are available at a sub-national scale and are derived from National Forest Inventory data, harmonised using common reference definitions and estimation methodology, and updated to a common year using a modelling approach. For those counties without harmonised statistics, data were derived from the State of Europe's Forest 2020 Report at the national scale. The maps are coherent with the statistics and depict the spatial distribution of the forest variables at 100 m resolution.

Published
2024

6. Forest Management Plan in Domogt Sharyn Gol, Mongolia is Elaborated on Ecological and Sustainable Principles

Author

Smola Martin, Kusbach Antonín, Štěrba Tadeáš, Adolt Radim, and Nečas Michal

Subjects
forest management plan, mongolia, forest classification, sustainable management, operational inventory, Ecology, QH540-549.5
Abstract

A forest management plan based on ecological principles and forest management sustainability was elaborated for the Domogt Sharyn Gol Company, Mongolia. We presented possibility of use of principles and methods traditionally utilized in forest management planning in the Czech Republic. A used methodology was adjusted for the forestry legislature in Mongolia.

Published
2019
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7. Progress Towards Harmonised Assessment of Availability and Use of Wood Resources in Europe

Author

Vidal, Claude, Gschwantner, Thomas, Korhonen, Kari T., Alberdi, Iciar, Gasparini, Patrizia, Redmond, John, Ginzler, Christian, Fischer, Christoph, Hervé, Jean Christophe, Waser, Lars T., Kuliešis, Andrius, Kasperavičius, Albertas, Bosela, Michal, Adolt, Radim, Petráš, Rudolf, Kučera, Miloš, Fridman, Jonas, Schadauer, Klemens, Vidal, Claude, editor, Alberdi, Iciar A., editor, Hernández Mateo, Laura, editor, and Redmond, John J., editor

Published
2016
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10. Field Survey of Dracaena Cinnabari Populations in Firmihin, Socotra Island: Methodology and Preliminary Results

Author

Adolt Radim, Maděra Petr, Abraham Josef, Čupa Petr, Svátek Martin, Matula Radim, Šebesta Jan, Čermák Martin, Volařík Daniel, Koutecký Tomáš, Rejžek Martin, Šenfeldr Martin, Veska Jiří, Habrová Hana, Čermák Zdeněk, and Němec Petr

Subjects
Ecology, QH540-549.5
Abstract

Between 2010 and 2011 a field survey dedicated to Dracaena cinnabari (DC) population was conducted in Firmihin, Socotra Island (Yemen). It’s main goal was to collect data that would make it possible to unbiasedly estimate main characteristics of the local DC population. Our motivation was to provide reliable information to support decision-making processes as well as other research activities. At the same time we were not aware of a survey which could provide this kind of statistical-sound estimates for the whole population covering an area of almost 700 ha.

Published
2013
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15. Correction to: Harmonised projections of future forest resources in Europe

Author

Vauhkonen, Jari, primary, Berger, Ambros, additional, Gschwantner, Thomas, additional, Schadauer, Klemens, additional, Lejeune, Philippe, additional, Perin, Jérôme, additional, Pitchugin, Mikhail, additional, Adolt, Radim, additional, Zeman, Miroslav, additional, Johannsen, Vivian Kvist, additional, Kepfer-Rojas, Sebastian, additional, Sims, Allan, additional, Bastick, Claire, additional, Morneau, François, additional, Colin, Antoine, additional, Bender, Susann, additional, Kovácsevics, Pál, additional, Solti, György, additional, Kolozs, László, additional, Nagy, Dóra, additional, Nagy, Kinga, additional, Twomey, Mark, additional, Redmond, John, additional, Gasparini, Patrizia, additional, Notarangelo, Monica, additional, Rizzo, Maria, additional, Makovskis, Kristaps, additional, Lazdins, Andis, additional, Lupikis, Ainars, additional, Kulbokas, Gintaras, additional, Antón-Fernández, Clara, additional, Rego, Francisco Castro, additional, Nunes, Leónia, additional, Marin, Gheorghe, additional, Calota, Catalin, additional, Pantić, Damjan, additional, Borota, Dragan, additional, Roessiger, Joerg, additional, Bosela, Michal, additional, Šebeň, Vladimír, additional, Skudnik, Mitja, additional, Adame, Patricia, additional, Alberdi, Iciar, additional, Cañellas, Isabel, additional, Lind, Torgny, additional, Trubins, Renats, additional, Thürig, Esther, additional, Stadelmann, Golo, additional, Ditchburn, Ben, additional, Ross, David, additional, Gilbert, Justin, additional, Halsall, Lesley, additional, Lier, Markus, additional, and Packalen, Tuula, additional

Published
2019
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16. Harmonised projections of future forest resources in Europe

Author

Vauhkonen, Jari, primary, Berger, Ambros, additional, Gschwantner, Thomas, additional, Schadauer, Klemens, additional, Lejeune, Philippe, additional, Perin, Jérôme, additional, Pitchugin, Mikhail, additional, Adolt, Radim, additional, Zeman, Miroslav, additional, Johannsen, Vivian Kvist, additional, Kepfer-Rojas, Sebastian, additional, Sims, Allan, additional, Bastick, Claire, additional, Morneau, François, additional, Colin, Antoine, additional, Bender, Susann, additional, Kovácsevics, Pál, additional, Solti, György, additional, Kolozs, László, additional, Nagy, Dóra, additional, Nagy, Kinga, additional, Twomey, Mark, additional, Redmond, John, additional, Gasparini, Patrizia, additional, Notarangelo, Monica, additional, Rizzo, Maria, additional, Makovskis, Kristaps, additional, Lazdins, Andis, additional, Lupikis, Ainars, additional, Kulbokas, Gintaras, additional, Antón-Fernández, Clara, additional, Rego, Francisco Castro, additional, Nunes, Leónia, additional, Marin, Gheorghe, additional, Calota, Catalin, additional, Pantić, Damjan, additional, Borota, Dragan, additional, Roessiger, Joerg, additional, Bosela, Michal, additional, Šebeň, Vladimír, additional, Skudnik, Mitja, additional, Adame, Patricia, additional, Alberdi, Iciar, additional, Cañellas, Isabel, additional, Lind, Torgny, additional, Trubins, Renats, additional, Thürig, Esther, additional, Stadelmann, Golo, additional, Ditchburn, Ben, additional, Ross, David, additional, Gilbert, Justin, additional, Halsall, Lesley, additional, Lier, Markus, additional, and Packalen, Tuula, additional

Published
2019
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17. Harmonised projections of future forest resources in Europe

Author

Vauhkonen, Jari, Berger, Ambros, Gschwantner, Thomas, Schadauer, Klemens, Lejeune, Philippe, Perin, Jerome, Pitchugin, Mikhail, Adolt, Radim, Zeman, Miroslav, Johannsen, Vivian Kvist, Kepfer-Rojas, Sebastian, Sims, Allan, Bastick, Claire, Morneau, Francois, Colin, Antoine, Bender, Susann, Kovacsevics, Pal, Solti, Gyorgy, Kolozs, Laszlo, Nagy, Dora, Nagy, Kinga, Twomey, Mark, Redmond, John, Gasparini, Patrizia, Notarangelo, Monica, Rizzo, Maria, Makovskis, Kristaps, Lazdins, Andis, Lupikis, Ainars, Kulbokas, Gintaras, Anton-Fernandez, Clara, Rego, Francisco Castro, Nunes, Leonia, Marin, Gheorghe, Calota, Catalin, Pantic, Damjan, Borota, Dragan, Roessiger, Joerg, Bosela, Michal, Seben, Vladimir, Skudnik, Mitja, Adame, Patricia, Alberdi, Iciar, Canellas, Isabel, Lind, Torgny, Trubins, Renats, Thurig, Esther, Stadelmann, Golo, Ditchburn, Ben, Ross, David, Gilbert, Justin, Halsall, Lesley, Lier, Markus, Packalen, Tuula, Vauhkonen, Jari, Berger, Ambros, Gschwantner, Thomas, Schadauer, Klemens, Lejeune, Philippe, Perin, Jerome, Pitchugin, Mikhail, Adolt, Radim, Zeman, Miroslav, Johannsen, Vivian Kvist, Kepfer-Rojas, Sebastian, Sims, Allan, Bastick, Claire, Morneau, Francois, Colin, Antoine, Bender, Susann, Kovacsevics, Pal, Solti, Gyorgy, Kolozs, Laszlo, Nagy, Dora, Nagy, Kinga, Twomey, Mark, Redmond, John, Gasparini, Patrizia, Notarangelo, Monica, Rizzo, Maria, Makovskis, Kristaps, Lazdins, Andis, Lupikis, Ainars, Kulbokas, Gintaras, Anton-Fernandez, Clara, Rego, Francisco Castro, Nunes, Leonia, Marin, Gheorghe, Calota, Catalin, Pantic, Damjan, Borota, Dragan, Roessiger, Joerg, Bosela, Michal, Seben, Vladimir, Skudnik, Mitja, Adame, Patricia, Alberdi, Iciar, Canellas, Isabel, Lind, Torgny, Trubins, Renats, Thurig, Esther, Stadelmann, Golo, Ditchburn, Ben, Ross, David, Gilbert, Justin, Halsall, Lesley, Lier, Markus, and Packalen, Tuula

Published
2019

18. Stem quality assessment in European National Forest Inventories: an opportunity for harmonised reporting?

Author

Bosela, Michal, primary, Redmond, John, additional, Kučera, Miloš, additional, Marin, Gheorghe, additional, Adolt, Radim, additional, Gschwantner, Thomas, additional, Petráš, Rudolf, additional, Korhonen, Kari, additional, Kuliešis, Andrius, additional, Kulbokas, Gintaras, additional, Fischer, Christoph, additional, and Lanz, Adrian, additional

Published
2015
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19. Age structure and growth ofDracaena cinnabaripopulations on Socotra

Author

Adolt, Radim and Pavlis, Jindrich

Abstract

UniqueDracaena cinnabariwoodlands on Socotra Island—relics of the Mio-Pliocene xerophile-sclerophyllous southern Tethys Flora—were examined in detail, especially with regard to their age structure. Detailed statistical analyses of sets of 50 trees at four localities were performed in order to define a model reflecting relationships between specific growth habit and actual age. The problematic nature of determining the age of an individual tree or specific populations ofD. cinnabariis illustrated by three models relating to orders of branching, frequency of fruiting, etc. which allow the actual tree age to be calculated. Based on statistical analyses as well as direct field observations,D. cinnabari populations on Socotra do not regenerate to a great extent and their age structure generally indicates overmaturity. The unique FirmihinD. cinnabari woodland will reach the stage of intensive disintegration within 30–77 years with 95% probability. According to our analysis of dead trees, it is evident that, on average,D. cinnabari in populations at Firmihin dies after reaching 17 orders of peripheral branches.UniqueDracaena cinnabariwoodlands on Socotra Island—relics of the Mio-Pliocene xerophile-sclerophyllous southern Tethys Flora—were examined in detail, especially with regard to their age structure. Detailed statistical analyses of sets of 50 trees at four localities were performed in order to define a model reflecting relationships between specific growth habit and actual age. The problematic nature of determining the age of an individual tree or specific populations ofD. cinnabariis illustrated by three models relating to orders of branching, frequency of fruiting, etc. which allow the actual tree age to be calculated. Based on statistical analyses as well as direct field observations,D. cinnabari populations on Socotra do not regenerate to a great extent and their age structure generally indicates overmaturity. The unique FirmihinD. cinnabari woodland will reach the stage of intensive disintegration within 30–77 years with 95% probability. According to our analysis of dead trees, it is evident that, on average,D. cinnabari in populations at Firmihin dies after reaching 17 orders of peripheral branches.

Published
2004
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