BBC release old Magellanic Woodpecker footage

Thanks to Bill Benish for his recent post on his woodpecker blog which alerted me to a high quality version of the famous David Attenborough clip on the Magellanic Woodpecker released by the BBC. Check it out below.

Finalmente!

At last my masters is over! I'm now going to be leaving my job at Foster + Partners to do some voluntary work abroad (more to follow). I've included the final habitat suitability map for the Magellanic woodpecker. Please see the separate website for more details.

Campephilus-GIS

Only a month to go till my dissertation deadline! I have created a website for discussing the different environmental factors that affect habitat suitability for the Magellanic Woodpecker on Tierra del Fuego.

The main aim of the website is to get expert feedback on these factors so the model can be justified.

Campephilus-GIS

Fuzzy Feelings

ahhh it's nice to be using Idrisi again. When it comes to multi-criteria analysis its far superior to ArcGIS. Idrisi has a handy tool called Fuzzy which allows you to use fuzzy logic to create countinuous boundaries around (in my case) roads and rivers. For my project I was thinking of creating a 5km buffer around roads as the Magellanic woodpecker prefers undisturbed environments but buffers aren't very clever. The buffer approach would assume that being 1cm from the road is the same as being 4.9 km from the road. The fuzzy tool in Idrisi allows me to create a rule based on a membership function stating for example that you will definitely not find a woodpecker within 100m of the road and that your chances would increase up to 5km after which the road would have no effect at all. I will also apply fuzzy logic to distance from rivers and elevation. The images below shows the buffer and fuzzy approach applied to the road network. Click for detail.

The image below shows the Idrisi Distance tool applied to the river network of the study area. Each pixel is assigned the value of its distance to the nearest river in metres.

More here

Enter The Beaver

The woodpecker project is now fully underway! I've been collecting data on vegetation, hydrology, roads etc as well as getting hold of a good DEM of the study area. The main factor determining habitat suitability is undoubtedly vegetation type. Woodpeckers are only found in native mature lenga (beech) forests. Which areas of these forests are more suitable is likely to be dependent on proximity to beaver colonies. The dams created by the beavers produce localised flooding which results in more rotten trees which suit woodpecker nesting.



The American Beaver (Castor canadensis) was introduced to Tierra del Fuego in 1946 and is thought to have reached its full abundance potential along the river systems. Although 8.5% of the Island’s Beech forest have been destroyed by beaver activity the swampland they create is favoured by the woodpeckers due to increased fungal action on trees facilitating nesting.

I should be getting some more data on beaver colonies from the Wildlife Conservation Society. The coverage is unlikely to be complete for my area of study so I will have to look at ways of identifying sections of river likely to contain beaver colonies.

Karukinka Dreaming.....

If all goes well I will be doing my dissertation on creating habitat suitability maps for the Magellanic Woodpekcer in Karukinka National park, Patagonia. This species of woodpeck is endangered and is a bioindicator for non-disturbed enviroments due to its sensitivity. It is also a keystone species for the Patagonian ecosystem.

The aim of the project is to use remotely sensed satellite data along with other environmental variables to create habitat suitability maps for the species. This will indicate areas where the woodpecker is likely to be found so field ecologists can save resources searching vast areas for species presence.