Tutukaka Harbour has been subject to sustained negative impacts over the past several decades; including substantial sedimentation from land clearing and development in the catchment, excess nutrients and pollutants from agricultural, domestic, and recreational sources, and overfishing of ecologically important key species, such as kōura (crayfish) and tāmure (snapper). The result is a highly degraded … Continue reading Kelp regeneration in Tutukaka Harbour
Inspired by Michal Kravčík's work I have been using a thermal imaging camera to show the cooling impact of plants. It's a Seek Compact XR lens that plugs into the usb port on my mobile phone. This first image is from Coronation Reserve in Whāngarei. The bottom image is a thermal image of the same … Continue reading Plants cool!
A paper about methane that I have been working on with a team of scientists and practitioners is now published. A nuanced understanding of methane is important for Aotearoa, as the dominant view positions methane emissions as a major problem. But our predominantly pasture-based agricultural systems operate in ways that emit methane, also support the … Continue reading Methane: Sources, Sinks and Uncertainties
When someone claims that we can cool the earth safely and naturally in a decade, you would think people would be interested, right? This would be especially so when this claim comes from climate scientist Walter Jehne. I picked up Walter's ideas from a good friend who was very patient with me because I was … Continue reading More evidence for direct cooling
Tai Tokerau is a slim peninsula about 320 km long. The Northland Region has 3200 kms of coastline and harbour shoreline, including the Kaipara Harbour, which has the longest shoreline of any harbour in the world. Our marine ecosystems range from the pristine Poor Knights Islands, to the degraded waterways in our harbours. 700,000 tonnes … Continue reading Marine permaculture for Tai Tokerau?