#Metsätiede2025
Afternoon parallel session of the Forest Biology Club
Forests contain layers from different time periods. Some of these represent the present and renewal, such as the latest needles and annual growth rings of trees, while others are signs of the past, such as pine kelo trees in natural forests. Not all biological layers are visible structures of the forest: Trees and the organisms dependent on them carry genetic material, the evolutionary path of which stretches far into the history of life.
Temporal layers are kind of memory traces, of which the past stages of a forest can be inferred. Based on tree-ring data, it is possible to study the occurrence of wild fires and from soil layers infer the tree species composition of past time periods. Over time, the layering of forests has partially narrowed and partially disappeared.
In the Forest Biology Club’s afternoon session, we will examine the temporal layers of forests. How do past events, such as natural disturbances and successions, as well as human activities, affect and appear in the present-day forests and their organisms? What is the significance of forest layering for biodiversity? How can layering be increased through different forest management methods?
Programme
| 13.15-13.20 | Opening words | Puheenjohtaja Hannes Pasanen; University of Eastern Finland |
| 13.20-13.45 | Ajalliset kerrokset boreaalisessa mäntymetsässä (In Finnish) | Tuomas Aakala; University of Eastern Finland |
| 13.45-14.10 | Värriön Kuutsjärven sedimenttisarja kertoo jääkauden jälkeisen Suomen kasvillisuuden kehityksestä ja äkillisistä ilmaston heilahduksista (In Finnish) | J. Sakari Salonen. University of Helsinki |
| 14.10–14.30 | Maaperän eri kerrosten rooli metsän aluskasvillisuuden vaihtelussa (In Finnish) | Tiina Törmänen1, Jari Oksanen2, Maija Salemaa1, Tiina Tonteri1, Raisa Mäkipää1; 1Natural Resources Institute Finland; 2Finnish Museum of Natural History |
| 14.30–15.00 | Coffee break | |
| 15.00–15.20 | Puiden ja niiden seuralaislajien evoluutio (In Finnish) | Petri Keto-Tokoi; Tampere University of Applied Sciences |
| 15.20–15.40 | Metsää kuvaavien mallien kerroksellisuudesta: Mitä metsätalouden vaikutuksista lintuihin voi mallintamalla päätellä – ja mitä ei? (In Finnish) | Jari Vauhkonen; University of Eastern Finland |
| 15.40–16.00 | Uneven-aged and even-aged forest management shape the fungal community composition and affect soil carbon stabilization (In English) | Eva-Maria Roth1, Outi-Maaria Sietiö2, Bartosz Adamczyk3, Pingping Xu4, Sauli Valkonen3, Eeva-Stiina Tuittila5, Heljä-Sisko Helmisaari1, Kristiina Karhu1; 1University of Helsinki; 2Häme University of Applied Sciences; 3 Natural Resources Institute Finland; 4University of Chinese Academy of Sciences; 5 University of Eastern Finland |