Biodiversity and Globalization
It's amazing the language that gets used around so-called invasive species. New Jersey refers to the 'alien invaders' amongst us where California talks about "Zebra Mussel Outlaws". In the days since 9/11 a fair amount of the protecting the homeland talk has been taken up by environmenalists. We don't want these foregn agents coming into our country and wreaking untold havoc, now do we. It's a long way from the heady days of the nineteenth century where there were societies to turn parts of the United States into bucolic England - one such had the goal of importing and nurturing every plant mentioned in Shakespeare.
It's an odd term, 'invasive species'. Sort of reminds me of the (circum)locutions folks indulge in when they talk about the 'homosexual community'' - it sounds like a reasonable term till you try to imagine its other - the non-invasive species, or the 'heterosexual community'. The unmarked categories (native species, heterosexuals) are not, so the rhetoric goes, a single unit - they are doing just what they should be doing until the outsider comes along to threaten them. Let's stay with the species, since I don't want to strain the
analogy. It's sort of in the nature of species to be invasive. Never met a good species that wasn't. Certainly not our own - we are invaders par excellence - living in a wider set of environments than most other entities on earth. We bring our invaders with us (cats, for example, are a major source of biodiversity loss in Australia - since the marsupials there did not have natural predators in the available trophic slot). We have invaded many landscapes with our wheat, corn and soy. We have ourselves internally been invaded countless times, and are the better for it - infants who don't get a good dose of their mother's bacterial colonies in the birth process at are a signficant health disadvantage. Bring a species to a new place, and of course it will try to survive.
And then there's the problem of what the natural environment is. Take the midwest of the US - that part of it which I know well (the "I" states - Iowa, Illinois, Indiana) live in the rainshadow of the recently created Rocky Mountains. The prairie landscapes which have developed there are still basically in their early stages - there are few or no 'native' species - everything is an invader. Further, when restorationists try to preserve the ancient prairie, they tend to preserve to a period when the Native Americans were practicing fire management of the landscape - were already changing it significantly. So in principle preserving the prairies becomes a somewhat tortuous question of preserving what might have been had there not been two waves of human invasion. I'm a little unclear on why precisely this is worth doing.
I live in the redwood forests. Second growth - billions of metric feet got shipped out, built with, used to fire kilns and so forth till the slaughter stopped. In the troubled area I live in the invasive madrones have come into the environmentally disturbed area and have clawed out a foothold. They tend to get pretty good press. The poor old French broom doens't (isn't it nice when you can associate nationalities to epidemics - just like the Spanish flu?) - many of my friends pull these out of the ground whernever they see them with nary a qualm at the destruction they are causing.
So we arrive at the point where I am generally asked if I'm being just deliberately hornery or whether I have something to say. Surely no-one wants lantana or cane toads in Austrlia, French broom in Calironia, and zebra mussels coursing through our waters. Well I guess not - it does sadden me to see any species die, and if one species is doing a lot of killing in new territory (excepting ourselves I guess) then there's arguments for eradication. However, if we are trully living in one world right now, and are trully travelling as much as we seem to want (as a species) to then I don't think that people jumping up to see if there's any insects in the undercarriages of jets in Hawai'i is really going to do much for the very long term. It's like the British obsession of stopping the 'spread' of rabies - millions of dollars spent keeping a pretty harmless disease (when is the last human vicitim you can think of - and it's endemic in Europe) out of the United Kingdom - united against invasion.
We need to recast the debate - and as with so many issues in our technoscientific world - we can use a similar argument for humans and for non-humans. Creating Maginot lines, massive wallls against Mexican immigrants or between the Palistineans and the Israelis is bound to be a failed endeavour, as well as being wrong-headed. Maintaining purity is a massive amount of work and all historical examples show is that it always fails. ("Beware of purity it is the vitriol of the soul" as Tournier's Robinson Crusoe says). There's a wonderful book by Arthur Waldrup called The Great Wall of China: from History to Myth, where he shows that the Wall, stood at a site of great exchange - often the nomadic hordes invaded through it, became sinicized, and then sat around (became sedentary) for several generations till the next invasion through the Wall. Similarly with nature. If we insist on deploying the communications technology we do (and I'm personally looking forward to a day with less planes, but more airships, since I do love to travel) then we should accept other species as our fellow-travellers. If we don't get so het up about invasion, we may get some really unfortunate things happen along the way (loss of some great species) but we will be acting much more naturally.
The biodiversity debate which isn't happening in this country needs to be careful not to get caught up in cheap and easy rhetoric borrowed from myths of racial purity and crazed aliens. We need to be, socially and naturally, cosmopolitan.
Geof Bowker


inormation about us. Let's stick with humans for the nonce. My own private homeland of England is arguably the most monitored nation on earth - it's hard to walk down the streets of London town without being picked up on cameras as you dip into Tesco's for a Guardian (that should protect you :-)) or swing into the pub for a half pint of Fuller's ESB. On the Underground, the only bit of tape that seems to have gone missing in the past few years is the recording of the unfortunate incident of Jean Charles de Menenez, shot for wearing a bulky jacket.


