In March 2014 I wrote an article about the health of our waterways, & had entered a piece of fibre art into the Nelson Fibre Art exhibition called ‘Downstream.’ I’ve just been reading an article in the Listener about a scientist called Mike Joy who is taking a stand for the wellbeing of New Zealands fresh water resources, here is the link:    http://www.listener.co.nz/current-affairs/ecologic/river-stance/

Our Creek Millstream

I’m interested in the study of species found in the water that act as indicators of water health or otherwise. I’m going to do some research of my own & report back what I find out. At the moment I can’t even identify many species so shall have to get familiar with those creatures we may hope to find in our own creek & other waterways. I have noticed that there seem to be few koura or freshwater crayfish around at the moment & this is unusual as we often see dozens in one spot. We also continue to have large rafts of algae in the slower running places, which block the stream & exacerbate growth of duckweed etc which further blocks the flow, hard to tell if this is a result of upstream pollution or simply that one of the large willows fell down & there is more sunlight warming the water & feeding the algae.The link below is informative on the process of checking the invertebrates in a given water supply. (benthic means at the lowest level, eg. the bottom of a stream bed, including silt.

Now it’s April, I have had one foray into the creek with a net & bucket, but alas also with leaky gumboots, which dampened my enthusiasm. The leaky boots also hindered my attempts to find critters to identify since I am a total sook about cold water. I took a few photos, & identified a couple of things,(I have meantime lost the piece of paper with their names on,) so on the whole it was not a hugely successful outing. We have some intrepid friends visiting this weekend & shall have a more thorough go at finding  some creatures & identifying them. Hopefully I can add some more useful info after that.

Critters from creek march2016 005 (Copy)

http://cber.bio.waikato.ac.nz/images/Macroinvertebrates_and_water_quality.pdf

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