Dear all,

The International Tree Mortality Network, an initiative of the IUFRO task force on monitoring trends and patterns in global tree mortality, continues the online seminar series join on December 9, 2 pm CET / 4 pm MSK, with:

Dr. Viacheslav Kharuk

Title: Conifer decline and mortality in Siberia

Abstract: Conifer decline and mortality in the 21st century has been observed all over the boreal forests zone (e.g., Boyd et al., 2019), Europe (e.g., Hasenauer, & Seidl, 2017), and Russia (e.g., Kharuk et al., 2020). This report focused mostly on the causes of Siberian pine (Pinus sibirica Du Tour.) and fir (Abies sibirica Ledeb) decline and mortality in Siberia. In addition, recent insect (Zeiraphera griseana) and fungi (Melampsora sp.) attacks on the Larix sibirica stands are considered.

Results
1. Warming caused northward and uphill migration of the Siberian moth (Dendrolimus sibiricus Tschetv.) outbreaks range into the former pristine taiga.
2. Siberian fir mortality caused by the synergy of bark-beetles (Polygraphus proximus Blandford.) attacks and water stress.
3. Siberian pine and fir forest mortality preceded by trees growth index (GI) reduction caused by elevated air temperatures, acute droughts and following on insect attacks.
4. In mountains forest mortality observed mostly at low elevations, whereas within the areas with sufficient moisture availability (i.e., at elevations above ~1000 m) trees GI and forest area are increasing.
5. Consecutive years with elevated air temperature provoked immense insect (Zeiraphera griseana) outbreak within relatively dry larch habitat and fungi (Melampsora sp.) outbreak within moisture larch habitat.
6. With the projected drought increase, precipitation-sensitive Siberian pine and fir would retreat from its southern low elevation ranges and substitute by tolerant species (e.g., Betula spp, Larix sibirica, Pinus sylvestris).

Bio: Dr. Viacheslav Kharuk is the Head of the Forest Monitoring Lab at the Sukachev Institute of Forests. His main research areas are forest ecology and dynamics, remote sensing, climate and biotic impacts, and wildfires.

Please register for the Zoom Webinar:
https://zoom.us/webinar/register/WN_IcCN3wccSGibiphrEsnoBA

Note that the talks might be recorded.

Previous seminars:
Seminar # 1: Matt Hansen - Global forest monitoring using satellite data
https://youtu.be/snUSGNb9bAQ

Seminar # 2: Flavia Costa - Tree mortality in the Amazon
https://youtu.be/5wmzX9ldn4Q

Seminar #3: Belinda Medlyn
https://youtu.be/T6S9VKklbyc

Seminar #4: Nate McDowell

Seminar #5: Lisa Hülsmann

Seminar #6: Craig D Allen

Seminar #7: Yude Pan




--


https://www.tree-mortality.net/

 

---

Dr. (habil.) Henrik Hartmann

Group leader

Plant Allocation

 

MPI for Biogeochemistry

Hans Knöll Str. 10

07745 Jena, Germany

 

 

Contact:  hhart@bgc-jena.mpg.de

Phone:    +49.3641.576294

Mobile:  +49.171.8188273

Website: https://www.bgc-jena.mpg.de/bgp/index.php/HenrikHartmann/HenrikHartmann

 

Initiatives:

International Tree Mortality Network

https://www.tree-mortality.net/

 

IUFRO Task Force on monitoring of global tree mortality patterns and trends

https://www.iufro.org/science/task-forces/tree-mortality-patterns/