Chewing up Kenyan gums

This strikes close to home. The Ministry of the Environment in Kenya has instructed farmers in Central Province to cut down eucalyptus trees growing near water courses. Apparently, this constitutes “an attempt to lessen the impact of the drought that is ravaging the country,” because eucalypts are “thirsty.”

The mother-in-law has been managing (by coppicing) a small eucalyptus stand for years. The firewood is what keeps her — and us, when we visit — warm during the cold season. And she sells a few poles every now and then for extra cash. You can see how important gums and other exotic trees are around her place in the Limuru highlands in this picture:

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Now, I’m all in favour of indigenous trees, but the seeds haven’t been available in sufficient quantities until recently (to say nothing of awareness and policies). And the hydrological case against eucalypts is subtle: they certainly use a lot of water, but they are efficient in its use, and a very valuable resource in many places.

It seems unfair to blame and penalize farmers for choosing eucalyptuses and Australian acacias when they needed to plant some trees many years back and those were the species that were available, and were being pushed. I hope the mother-in-law gets to keep her eucalypts, at least until she can get some grevilleas growing. We’ll need them when the cold comes.

Taxonomists to keep jobs until 2515

The second edition of Arthur Chapman’s report “Numbers of Living Species in Australia and the World” was launched this week.

The total number of described species in the world is estimated at just under 1,900,000 — well above the 1,786,000 in the previous report that was published in 2006 1. Chapman’s estimate of the total number of species is close to 11 million. A staggering 83% remain undescribed.

And not because taxonomist aren’t beavering away:

About 18,000 new species are being described each year (16,969 in 2006 and 18,516 in 2007). About 75% of the new species described in 2007 were invertebrates, 11% vascular plants and nearly 7% were vertebrates.

That is an impressive feat. But at this rate it will take until 2515 to describe all the species currently alive. Unfortunately, many of them will be extinct by then.

Featured: Neotropical fruits

Xavier sets Jeremy right on that carob-like fruit in Ecuador:

Must have been an Inga species (called guaba in Ecuador, not to be confused with guava, the English name for Psidium guajava, or guayaba (its Spanish equivalent). In English the species is referred to as pacay or, more attractive, ice-cream bean (I hope you had a chance to try it…)