Skip to main content

Splatometer

Walking my dog every day around this small Wairarapa town, it seems to me there are very few insects around; the environment seems so sterile somehow. Inspecting my car after driving around the countryside, the windscreens and grill are relatively free of dead insects, no splattered moths and squashed flies and wasps and bees. Are insects disappearing? And what might be the consequences for our birds? When did I last see a stick insect, a dragonfly, a lady bird, or one of those brilliant native hunting wasps? And are moths as numerous as they used to be? So what is happening? Does anyone care? After all bugs are everyone’s bug bear!

Yesterday I watched a thrush stumble away from my dog, making me think that perhaps it had picked up a poisoned slug, having watched a neighbor put out slug bait the day before. And every night I watch the television advertisements encouraging people to slaughter everything that moves in and around the house. We have got very efficient at destroying bugs without a doubt.

How many people give the birds or other natural predators a chance to control the bugs? Does anyone educate the public about it? Birds will go a long way towards doing the job if given half a chance. The use of pesticides has never struck me as a very intelligent solution to a problem as the first thing that chemicals do is kill off the natural predators. Plants and insects have been waging chemical war fare since the beginning of time, trying to outwit each other in the evolutionary game. Plants produce the most amazing toxins to ward off insects. Rather than have gone the down the road of producing pesticides, it’s a pity our scientists have not learned to work with the plant’s ability to do the job itself.

But I have not been alone in wondering about that state of our insects. The Royal Society for the Protection of Birds (RSPB) says species like tree sparrows and corn buntings are on the decline. It wants to know whether the apparent decline in the number of bees, ladybirds, moths and other insects has anything to do with this. . The Royal Society for the Protection of Birds’ (RSPB) Big Bug Count, staged throughout June 2004, aimed to paint an accurate picture of the population of the dreaded midge and the UK’s other 23,000 insect species. Nearly 40,000 motorists, including some 2,500 north of the border, attached a Splatometer - a cardboard grid to aid counting - on to their number plate and counted the number of "splats". They counted a total 324,814 insects at an average rate of only one splat every five miles.

Jonathan Osborne, RSPB Scotland’s Big Bug Count coordinator, said the survey - believed to be the first of its kind in the world - would form a baseline against which the organisation could compare data from future years. "Because this is the first survey of its kind, we can't yet say definitively that insect numbers have declined, but something worrying is going on, and potentially there will be an impact on our bird population. Britain's 23,000 species of insects are their bread and butter and the consequences of a decline have serious implications.”

Should we be initiating a similar count here in New Zealand?

Comments

Popular posts from this blog

Tunnel-web spiders and golden hunting wasps

My wildlife experiences these days are pretty much confined to my backyard and a daily ramble around the village of Greytown, New Zealand.  During my daily walks, it is the birds which attract my attention:  skylarks, (“Hail to thee, blithe spirit”), goldfinches, (“gaillard he was as a goldfynch in the shawe”),  black birds, (“shouting all day at nothing in leafy dells alone”), the song thrush, greenfinch, chaffinch, dunnock, california quail, house sparrow, eastern rosella, Australian magpie, starling, yellowhammer –foreigners all. Most of them were introduced in the nineteenth century as bio-agents to control plagues of insects brought about by the wholesale destruction of the bush and the consequential severe disruption of the eco-system. I welcome them all, knowing that in the not too distant future we may be lucky to see any bird at all.  I do see the odd native bird; kotare, the kingfisher, pipiwharauroa, the shining cuckoo and its dupe riro, the greywarbl

The Precipitous Decline of the Birds of the New Zealand Countryside

With all the hullabaloo about the impact of intensive farming on waterways, the impact on birds has been overlooked.  Millions of birds have been lost from New Zealand countryside over the past thirty odd years. Most of them were introduced birds so have not been missed but surely someone should have recognised that their loss indicated something had gone very wrong with farmland ecosystems.   We have a survey on New Zealand’s backyard birds, initiated by Landcare Research, but no up to date information on the birds of the countryside. The only comprehensive data we have is from the Ornithological Society of New Zealand’s  Atlas of Bird Distribution in New Zealand 1999-2004 which was published 2007. It was noted at its launch that  the Waikato region had become  a "bird desert" probably because of the dominance of dairy farming in the region.  Birds have not, it seems, fared quite so badly on the less intensive meat and wool farms,  but very little, if any,

Of Aphis and Ants, the end of the anthropocene

Marta had been awoken as usual by their antennae softly stroking her on the inner wrist. They seemed to wait until they were sure she was awake before crawling up her arm. They stroked her arm again just inside the elbow. She suspected they were administering a local anaesthetic.  She waited with the usual sense of dread for the tiny pin pricks as they probed. There were always just three of them.  Were they the same three ants every day? She couldn't tell. They were on the large size for ants, but ants they were, although their proboscides was more mosquito like than  that of any ant.  It was over in a few minutes. They waddled off with the bags inside their legs full of her blood. They disappeared under the door.  There was no keeping them out. They could fire off acid to dissolve any lock, any door, and leave humans a pulpy heap if they resisted or tried to fight back. They always made Marta think of the ants on the rose bushes she observed as a child, herding and milking