Der Klimawandel macht auch vor dem Amazonas-Regenwald nicht halt. Ein internationales Forscherteam ergründet nun, wie seine Bäume darauf reagieren Manaus/Wien – (derstandard.at›Wissenschaft›Forschung Spezial, Text von Bernadette Strohmaier, 12.6.2017)
Recently we have been investigating species composition and vegetation structure in 20 one-hectare plots established along edaphic and topographic gradients across the OSA peninsula, Costa Rica comparing plot-based field measurements with data derived from terrestrial laser scanning (TLS). Check out some scans right here:
In the currently running LACOSA project we will be investigating species composition and vegetation structure of >10.000 tree individuals that have been mapped and identified in 20 one-hectare plots established in SW Costa Rica. By using TLS to map aboveground C stocks across topoedaphic and successional gradients on the OSA peninsula we aim to create a more mechanistic understanding of how the controlling state factors (e.g. climate, geology, time and biota) determine the distribution of aboveground C stocks at the landscape-scale. Check out some of the scans right here:
Performing a terrestrial laser scanning campaign to investigate vegetation structure and aboveground C stocks along topographic gradients and across different stages of succession in tropical forest ecosystems.
Read more about the project here: tropicalbio.me/projects
Read more on this blog post: http://disneytls.blogspot.fr/2017/02/ghostly-stairs-and-old-paris.html
See more at Mat’s blog: http://disneytls.blogspot.fr/2017/02/back-to-kew.html
The impacts of elevated atmospheric CO2 (eCO2) and alterations in nutrient availability on the carbon storage capacity and resilience of the Amazon forest remain highly uncertain. Carbon dynamics are controlled by multiple eco-physiological processes responding to environmental change, but we lack solid experimental evidence, hampering theory development and thus representation in ecosystem models.
Here, we present two ecosystem-scale manipulation experiments, to be carried out in the Amazon, that examine tropical ecosystem responses to eCO2 and alterations in nutrient availability and thus will elucidate the representation of crucial ecological processes by ecosystem models.
We highlight current gaps in our understanding of tropical ecosystem responses to projected global changes in light of the eco-physiological assumptions considered by current ecosystem models.
We conclude that a more detailed process- based representation of the spatial (e.g., soil type; plant functional type) and temporal (seasonal and inter-annual) variability of tropical forests is needed to enhance model predictions of ecosystem responses to projected global environmental change.
Link to contribution “Amazon forest responses to elevated atmospheric CO2”: http://journal.frontiersin.org/article/10.3389/feart.2016.00019/full