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Zocht je misschien: spss, says?

Combined genetic and chemical methods boost the precision of tracing illegal timber in Central Africa

Boeschoten, L.E.; Venancio Meyer-Sand, B.R.; Boom, A.; Dipelet Bouka, G.U.; Ciliane-Madikou, J.C.U.; Engone Obiang, N.L. ; Guieshon-Engongoro, M. ; Groot, A. de; Loumeto, J.J. ; Mbika, D.M.F. ; moundounga, G.; Ndangani, M.D.; Ndiade-Bourobou, D.; Sass-Klaassen, U.G.W. (Lector); Smulders, M.J.M.; Tassiamba, S.N.; Tchamba, M.T.; Toumba-Paka, B.B.L.; Vlam, M. (Onderzoeker); Zanguim, H.T. ; Zemtsa, P.T.; Zuidema, P.A.

Enforcement of national and international laws banning illegal tropical timber trade hinges on independent origin verification, such as with genetic or chemical wood properties. This is of particular concern in Central Africa, where illegal trade prevails. However, tracing methods have not yet consistently …

2025-10-15Economie & ManagementArtikel

Mossen en korstmossen op dode bomen

Heijden, I. ter (Student); Sass-Klaassen, U.G.W.

In dit afstudeerproject stonden inlandse eik, beuk en grove den binnen bos/opstand in verschillende afbraakstadia centraal als substraat voor mossen en korstmossen. Hiervoor zijn opnamen uitgevoerd op boomlijken in KDHL en LGM. Het doel van dit onderzoek is erop gericht het effect van beschikbaarheid …

2025-06-10Natuur & LandbouwBachelor

Carbon emissions from fires in eastern Siberian larch forests

Delcourt, C.J.F.; Rogers, B.M.; Akhmetzyanov, L. ; Izbicki, B.; Scholten, R.C.; Shestakova, T.A.; Wees, D. van; Mack, M.C.; Sass-Klaassen, U.G.W. (Lector); Veraverbeke, S.

Siberian boreal forests have experienced increases in fire extent and intensity in recent years, which may threaten their role as carbon (C) sinks. Larch forests (Larix spp.) cover approximately 2.6 million km2 across Siberia, yet little is known about the magnitude and drivers of carbon combustion in …

2025-05-23Natuur & LandbouwArtikel

The importance of tropical tree-ring chronologies for global change research

Groenendijk, P.; Babst, F.; Trouet, V.; Sass-Klaassen, U.G.W. (Lector)

Tropical forests and woodlands are key components of the global carbon and water cycles. Yet, how climate change affects these biogeochemical cycles is poorly understood because of scarce long-term observations of tropical tree growth. The recent rise in tropical tree-ring studies may help to fill this …

2025-03-06Natuur & LandbouwArtikel

Tree growth responses to severe droughts for assessment of forest growth potential under future climate

Bouwman, M.; Akhmetzyanov, L. ; Mohren, F.; Ouden, J. den; Sass-Klaassen, U.G.W.; Copini, P.

More frequently occurring droughts, related to climate change, lead to reduced growth and loss of vitality in trees. The recent drought of 2018 was extreme, long-lasting and resulted in high evaporative demands due to the concurrent high temperatures. The aim of this study was to compare the drought …

2024-12-03Natuur & LandbouwArtikel

Stem decomposition of temperate tree species is determined by stem traits and fungal community composition during early stem decay

Yang, S.; Poorter, L.; Sterck, F.J. ; Cornelissen, J.H.C.; Logtestijn, R.S.P. van; Kuramae, E.E. ; Kowalchuk, G.A. ; Goudzwaard, L.; Chang, C.; Sass-Klaassen, U.G.W.

Understanding what drives deadwood decomposition over time is important to understanding forest carbon dynamics. Using a tailored experimental design in a temperate forest environment, it was found that initially wood characteristics explained the decomposition rate, while subsequently bark characteristics …

2024-03-25Natuur & LandbouwArtikel

Klimaatverandering kaart voor Nederlandse boomsoorten

Duvigneau, G. (Student); Crets-Fokkema, W.; Sass-Klaassen, U.G.W.

Klimaatverandering brengt onzekerheid voor de toekomst van bosbeheer met zich mee, waarbij stijgende temperaturen en droogte een negatieve invloed hebben op Nederlandse bossen (Lerink, Toor, König, & Nabuurs, 2019). Verschillende boomsoorten worden op diverse manieren beïnvloed door deze veranderingen. …

2024-01-08Natuur & LandbouwBachelor

Dieter Eckstein's bibliography and legacy of connection to wood biology and tree-ring science

Čufar, K.; Liang, E.; Smith, K.T.; Ważny, T.; Wrobel, S.; Cherubini, P.; Schmitt, U.; Läänelaid, A.; Burgert, I.; Koch, G.; Pumijumnong, N.; Sander, C.; Seo, J.W.; Sohar, K.; Yonenobu, H.; Sass-Klaassen, U.G.W.

Prof. Dr. Dieter Eckstein (1939 - 2021) significantly influenced the global development of dendrochronology and the underlying science of wood biology. Eckstein’s research areas included dendroclimatology, xylogenesis, ecophysiology, and quantitative wood anatomy. His personal and collaborative work …

2024-01-05Natuur & LandbouwArtikel

Incorporating high-resolution climate, remote sensing and topographic data to map annual forest growth in central and eastern Europe

Jevšenak, J.; Klisz, M.; Mašek, J.; Čada, V.; Janda, P.; Svoboda, M.; Vostarek, O.; Treml, V.; Maaten, E. van der; Popa, A.; Popa, I.; Maaten-Theunissen, M. van der; Zlatanov, T. ; Scharnweber, T.; Ahlgrimm, S.; Stolz, J.; Sochová, I.; Roibu, C.; Pretzsch, H.; Sass-Klaassen, U.G.W.; Schmied, G.; Uhl, E.; Kaczka, R.

To enhance our understanding of forest carbon sequestration, climate change mitigation and drought impact on forest ecosystems, the availability of high-resolution annual forest growth maps based on tree-ring width (TRW) would provide a significant advancement to the field. Site-specific characteristics, …

2023-12-29Natuur & LandbouwArtikel

Vitaal en veelzijdig bos

Sass-Klaassen, U.G.W. (Lector)

Poster en begeleidende audio uit de guided tour van het Open Atelier van CoE Groen op 7 december 2023 over het project Vitaal en veelzijdig bos van het lectoraat Duurzaam bosbeheer aan Hogeschool Van Hall Larenstein. In het project wordt nauw samengewerkt met studenten en professionals om te onderzoeken …

2023-12-07Natuur & LandbouwConferentiebijdrage

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