Sunday, March 22, 2009

Great tits*



The perfect day, for me, would be to get up just before the sun rises, have a cup of tea and feed the cats, pack my optical gear and bird guide, and go somewhere. Anywhere. Just as long as it's out of the range of your average outdoor house cat. There's a reason why small birds are seldom seen in cities, and it's not because of the air pollution.

The Millingerward nature area lies about 11 miles from where I live--a reasonable pedal for some of the best wildlife around. I've seen deer (dameharten), hare, storks, wildfowl, and songbirds there. It's truly amazing, the number of species that can coexist in such a small area--for it is a small area:

As a tributary of the Waal, Millingerward comprises of 2 large ponds/small lakes, and several wooded areas that are either woody or boggy, depending on the state of the Waal. Parts of the preserve are above the water line, even the high water line, and are open fields pocked with tussocks. The vegetation is kept in line by herds of cows and horses that roam "wild" over the ground (and are indeed seen all over the Ooijpolder**). The grazing habits of these beasts are critical for maintaining the health of the plants, which in turn affect the health of the wetland environment.

It is a prime example of wise ecological management. The Dutch are renowned for their water management (1953 says it all) but it was only in recent years--during the building of the Delta Water Project--that they realized that another dike isn't always the answer. Rather than focus on keeping water out, it became "redirecting the water" to where it could be useful. In this case, maintaining the wetland environment.

Wetlands have critical ecological functions, most of which benefit human activity as well. Primarily, they act as filters for nitrogen and phosphorous, the primary ingredients that lead to algae blooms (although it is true that only phosphorous is required for blooms). Because they have such a large capacity for holding fresh water (being wetland, after all), they are able to store huge quantities of fresh water--limiting the damage by flooding, and keeping streams and the ground water flowing when weather conditions might dictate otherwise. Furthermore, by slowing the flow of water out of the river, they decrease soil erosion.

Water control is not only a Dutch issue. The Mississippi River Valley is prone to issues of flood, drought, erosion, with expensive consequences--and never mind the continually-expanding Dead Zone in the Gulf of Mexico, which has basically rendered the ocean sterile for 60-100 miles beyond the Mississippi Delta. What's the big deal about the Mississippi River? Only the breadbasket of the United States. Most of the farmlands in the world are concentrated around major rivers, the health of which depends on these "bogs".

Conservation efforts like the one in place along the Ooijpolder are not conceptually any better than, say, protecting the elephants. But a smelly bit of bog isn't nearly as cute as polar bear cubs, and let's be honest--the Konik horses aren't much to look at. It's sad, really, that conservation has to be linked to something cute in order to convince people that it's worthwhile. Most often those animals aren't even the ones that are that critical to the health of the environment. And fixating on the numbers of a particular animal in existence detracts immensely from the real issues at hand: hanging on to the lands that we still have.

*The bird photographed is actually a long-tailed tit, at least, as far as I can tell.

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