News
Visualising the Agulhas Current
“A most stately thing and the fairest cape we saw in the whole circumference of the earth.” Constrasting currents of southern Africa.
News
Illegal kelp removal
Removing kelp without a permit? Removing kelp within the Boulders Restriced Zone? That’s poaching my friend
News
Revisiting the kelp map
Out with the Old… Several months back I wrote a blog detailing a preliminary method for classifying kelp from satellite imagery, based on some methods from researchers in California. We drew a couple conclusions from this. Namely, that the resolution of the LANDSAT imagery was not high enough for the Read more…
News
Beautiful rayshading with R
rayshader is a new R package from Tyler Morgan-Wall that makes creating beautiful hillshaded maps dead easy! Check out this quick demo of Table Mountain I threw together.
News
Can we use GIS to improve the Shark Spotters program?
Shark Spotters The Shark Spotters shark safety program began in 2004 as a Proudly South African solution to a surge in the number of shark sightings and shark bites that was occurring at the time. The program aims to provide environmentally friendly and socially responsible shark mitigation measures, one of Read more…
News
Interpreting Shark Movement With Accelerometers
“How do I do that in R?”: Ethographer What’s an accelerometer? Next up in our series of tutorials is a revisiting of some ancient work that I conducted while earning a masters degree at the University of Cape Town. In this project I compared patterns of shark swimming behaviour that Read more…
News
Estimating Kelp cover from LANDSAT imagery
Monitoring the distribution of kelp We love kelp here at Cape RADD, if you haven’t gotten that by now then I don’t know what you’re reading. I try to use the word kelp in a sentence at least once a day and I am pretty sure I’ve seen Jessie feed Read more…
News
Oceanographers discover new ocean current: Southwest Madagascar Coastal Current
Two Oceans We spend a lot of time in our Citizen Science day and biodiversity lectures speaking about oceanography and the Agulhas and Benguela currents. It is largely because of these two ocean currents that Cape Town sees such a rich diversity of marine and terrestrial life. There really aren’t Read more…
News
Incredible Kelp, Keystone of the Environment
We’re in love with all things kelp here at Cape RADD. We love kelp and we love lookin’ at it. Kelp forever! That’s why we loved this new Open-Access article published Tuesday in the journal Functional Ecology. Noisette F, Hurd C. Abiotic and biotic interactions in the diffusive boundary layer Read more…
Freediving
What are apnea tables?
And how can they improve my freediving? First-time freedivers are often asking about a ‘magic bullet’ that will unlock their breath holds; a secret trick that enables us to stay down for so long. Perhaps it’s because seemingly anyone can become a freediver. And rightfully so, anyone can, and some Read more…