Tagged: Phosphorus

How does agriculture affect New Zealand’s water quality? - Waiology

Waiology Dec 05, 2013

By Bob Wilcock About 40% of the land area of New Zealand is in some form of agriculture. Sheep and beef farming are the most extensive (33%) followed by dairy farming at 6%, and the remainder being horticulture and cropping. Based on a large number of comparative land use studies we have a good understanding of how agriculture affects … Read More

What causes didymo blooms (“rock snot”) in NZ rivers? - Waiology

Waiology Dec 19, 2012

By Cathy Kilroy Ever since the alga Didymosphenia geminata was discovered growing prolifically in a South Island river, scientists have puzzled over how “blooms” (unusually large algal growths) of this alga can form. Rivers below lakes and dams in the South Island have been especially severely affected. Massive, persistent mats of didymo in these rivers have changed their character, reduced … Read More

Fresh out: extraterrestrial life _not_ discovered! - misc.ience

Aimee Whitcroft Dec 03, 2010

You can thank the rampant speculation caused by NASA’s press release for this blog post’s title1. [UPDATE: There’s now a lot of controversy over the paper, which a number of microbiologists says it’s not, um, terribly good…] Very, very tough little bacteria And the thing is, … Read More