Thresholding using Python

Thanks to Daniel A. da Silva (PhD student at Universidade de Blumenau, Brazil), you can now pre-process your hemispherical images using Python code instead of Matlab. Daniel translated the code for us. Credits along with Daniel’s contact e-mail can be found in the introduction of the code.  Download here:

I tried uploading as file to the blog, but unfortunately python codes are not allowed. For feedback: write to us or Daniel. Thank you.



use your phone to do science?

Rapid estimates of  ground vegetation cover made easier with this app. This looks like a great tool to use in the field working in grasslands, degraded grasslands, croplands and generally low-height vegetation types. I am so excited about this, I advertise it before I even tried it. I am off to the field some time soon, so will updated on the tool’s usefulness once I gathered some data.

Back from Beijing

I (and Izzy, now 10 months old) just returned from Beijing, following two days of listening to talks about forests, their status and biodiversity, and their future. Funded by Forestry University, Beijing, the meeting (First GFBI Conference ever)  was fun, engaging and very international, many of the speakers being members of the Global Forest Biodiversity Initiative:

I also presented some of the findings that the Global LAI project team has produced so far. Please find the talk here: 2017_Beijing_GFBI. Don’t forget to look out for the journal Forest Ecosystems over the coming months. many of the high profile speakers who presented at the conference will publish the research they talked about in that journal. And actually, so will we 🙂 Pfeifer et al. In Review. Tropical forest canopies and their relationships with climate and disturbance: results from a global dataset of consistent field-based measurements. Forest Ecosystems.

And by the way: China was a great and welcoming place to travel to. Izzy was incredibly popular with the local tourists.

Luis in Peru

Several months ago, Luis has acquired hemispherical canopy pictures in forests of Peru. These data have now been analysed and added to the database. Thank you, Luis.

Jose is back from Guyana

Jose has returned from the forests in Guyana. He will be adding canopy structure measurements acquired in 40 plots located in selectively logged forests in Central Guayana to the growing LAI database. Thank you, Jose.

Protocol updated

Another year is gone. Almost. I advertised the Tropical Canopies Project (together with the BIOFRAG project) at two major international conferences: the EEF Congress ‘Ecology at the Interface’ in beautiful Rome (September 2015) and the RSPSoc Meeting in Southampton (September 2015). I also changed the protocol as I realise that the old one was a bit confusing in parts. And if you are in need of a sampling sheet to take to the field with you, here it is.