International Tree Mortality Network seminar series: Tree mortality modelling by Lisa Hülsmann May 6 (5 pm CEST)
by Henrik Hartmann
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 *May 6, 5 pm CEST*, with:
*Dr. Lisa Hülsmann*
*Title: Tree mortality modelling – a tool for ecological inference and a
challenge for projecting forest dynamics*
_Abstract:_ Tree death is ubiquitous in forests, even without climate
change, and has a lasting impact on forest structure, species
composition, biomass, and biodiversity. By relating tree mortality and
other vital rates to tree, forest, and environmental conditions, we can
therefore identify the mechanisms that govern the shape of forest
ecosystems. In turn, these empirical relationships can be useful for
projecting future forest dynamics and range limits of tree species. In
the talk, I will discuss empirical tree mortality models as a diagnostic
opportunity and a modeling challenge through two examples: the role of
conspecific negative density dependence (Janzen-Connell effects) for
tree diversity and the tighter coupling of dynamic vegetation models to
forest data.
_Bio:_ Dr. Lisa Hülsmann leads a junior research group at the University
of Regensburg (Germany) and combines empirical and simulation models to
investigate biotic interactions, ecosystem productivities, range limits
and their response to environmental change and human activities
especially in forest ecosystems. She studied forest ecology and
hydrogeology at the University of Göttingen and did her PhD on tree
mortality modelling at ETH Zurich.
*Please register for the Zoom Webinar: *
https://zoom.us/webinar/register/1516189233652/WN_F4a4CsEzT6Ct4AsBIruztQ
<https://zoom.us/webinar/register/1516189233652/WN_F4a4CsEzT6Ct4AsBIruztQ>
Note that the talks might be recorded.
*Recordings of previous seminars on YouTube:*
https://t1p.de/lrlv <https://t1p.de/lrlv>
*Visit us at:*
https://www.tree-mortality.net/ <https://www.tree-mortality.net/>
https://www.iufro.org/science/task-forces/tree-mortality-patterns/
<https://www.iufro.org/science/task-forces/tree-mortality-patterns/>
--
---
Dr. (habil.) Henrik Hartmann
Group leader
Plant Allocation
MPI for Biogeochemistry
Hans Knöll Str. 10
07745 Jena, Germany
Contact:hhart@bgc-jena.mpg.de <mailto: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
<https://www.bgc-jena.mpg.de/bgp/index.php/HenrikHartmann/HenrikHartmann>
*Initiatives*:
International Tree Mortality Network
https://www.tree-mortality.net/ <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/
<https://www.iufro.org/science/task-forces/tree-mortality-patterns/>
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FABI International Seminar with Dr Andrew (Sandy) Liebhold
by Brigitte Burger
Dear IUFRO FRIENDS
Please consider attending the upcoming FABI International Seminar (29th April at 16h00 GMT +2) to be presented by Dr Andrew (Sandy) Liebhold. Sandy is very well known to the IUFRO Community having (for example) served Division 7 (Tree Health) Co-ordinator and Chair of the Scientific Committee for our 125th Anniversary Congress in Freiburg in 2017. If you are interested in tree health, biological invasions or forests and forestry in general - this will be a seminar for you to enjoy.
To attend, it is necessary to register -please do so at https://www.fabinet.up.ac.za/index.php/event/FABISerminarSeries/
Background information on Sandy’s talk can be found below and details of the FABI International Seminar Series is on the web site above.
Best regards
Mike
[signature_678126525]
April, 2021
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Speaker: Dr Andrew Liebhold, US Forest Service Northern Research Station, Morgantown, WV USA
Title: Macroecology of Insect Invasions
Date: 29 April 2021 Time: 16:00 (GMT+2)
Abstract: Biological invasions are largely an unintended consequence of globalization. With increasing mobility, humans have accidentally transported organisms around the world, breaking the geographical boundaries that separated species ranges that persisted for millions of years of evolution. Among animals, the insecta is the most species-rich class, with thousands of insect species having been established outside of their native ranges and many of these species causing immense impacts on agriculture, human health and conservation of native ecosystems. Here, I report on a macroecological analysis of historical insect invasions spanning 300 years and 10 world regions. These data are used to compare frequencies of invasions among different insect orders and among different insect families. Species-area relationships for native insect assemblages are generally stronger than for non-native insect assemblages. Certain groups, such as the Hemiptera, Formicidae and the Staphylinidae are generally over-represented in non-native insect assemblages, while other taxa are under-represented. These patterns generally reflect characteristics of these insects that cause them to enter important invasion pathways and biological characteristics that facilitate invasions. These results ultimately allow us to better understand the socio-economic drivers of insect invasions and can be of use when conducting invasive pest risk analysis.
Biography: Andrew “Sandy” Liebhold has been a research entomologist with the US Forest Service Northern Research Station, Morgantown, WV USA since 1988. His research focuses on the ecology and management of biological invasions and the spatial dynamics of insect outbreaks. Liebhold received his PhD in Entomology from the University of California, Berkeley in 1984 and worked as a postdoctoral at the University of Massachusetts before joining the Forest Service. He is a fellow of the AAAS and serves on the editorial board of the journals Population Ecology and Biological Invasions. He also currently serves as a scientific coordinator with the Faculty of Forestry and Wood Science, Czech University of Life Sciences Prague and a visiting scholar with Scion Research in New Zealand.
This message and attachments are subject to a disclaimer.
Please refer to http://upnet.up.ac.za/services/it/documentation/docs/004167.pdf for full details.
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