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Nature
Switched On
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introduction |
a S T A M M E R project 2008 July 5 -15 How different is the aspect of the terrain compared with the situation one year ago. The vegetation is not only much greener but many species start to flower several weeks later. Species that were dominating last year (Daucus carota, Melilotus officinales, Senecia jacobea) are now much less abundant whereas Hypericum perforatum, Verbascum blattaria, Agrimonia eupatoria and Vicia peregrina are considerably more abundant. The barley in the neighbouring cereal fields hasn't been harvested yet. Weather conditions will be mainly responsible for these oscillations. There is still falling quite some rain with every 10 days or so a welcome thunderstorm.
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Central higher terrace. |
Central higher terrace. Looking
north-west. 12 July 10:19 |
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The ponds are still half full with rainwater. Sometimes the submerged pump is activated to transport water from the lower, backing pond up to the first pond.
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Higher pond with Iris
pseudacorus. 12 July 10:08 |
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Lower pond. |
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The presence of Wavyleaf mullein (Verbascum sinuatum) has been quite constant over two years but they flower much more conspicuously these days. Many Mullein species seem to open their flowers with more enthusiasm on wet, cloudy days.
Reflexed Stonecrop (Sedum reflexum) here
in the middle on the image on the right, was planted last spring and flowers abundantly on
several sites. |
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Verbascum sinuatum with Eryngium
campestre on
the background. |
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Blue Delphinium
halteratum, yellow Sedum reflexum and white
Daucus carota. Central terrace, looking north. 15 July 8:40 |
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The
experiments with the
rammed earth technique continue to be promising. The first 'bricks'
that were rammed on 26 June still look great, without cracks and
haven't shrunken noticeable. |
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Two samples of rammed earth with
layers of different soil. 14 July 9:52 |
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Quite a surprise was the detection of Trifolium fragiferum on the lowest western terrace that was recently mown . There are about four tufts growing among some tussocks of Dactylis glomerata. The leaves are very similar to White clover (Trifolium repens) but the flowers and especially the fruit are very characteristic. It is surprising because this plant prefers wet soils that may even be flooded sometimes. It could be a case of a subspecies adapted to drier soil conditions.
At a distance of only one metre I detected one specimen of another new species: Shrubby plantain (Plantago sempervirens). As the name indicates it is a small shrub with lignified stems. In contrast with the anterior species, this one is typically Mediterranean and prefers dry soils.
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Trifolium fragiferum on the lower
western terrace. |
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Inflorescence of Trifolium fragiferum. |
Fruit of Trifolium
fragiferum. 14 July 9:45 |
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Inflorescence of Plantago
sempervirens 14 July 9:49 |
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The Common teasel (Dipsacus
fullonum) is growing frequently in the region but this is the
first time on the terrain. Perhaps the result of my sowing last
year.
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Dipsacus fullonum on the lower,
central terrace. |
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Close-up of Prickly Lettuce (Lactuca
serriola). 6 July 8:47 |
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Leave of Common |
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I have finished the distribution maps of all existing species on the terrain. Quite a job that won't probably repeated every year but an interval of 4 or 5 years would give an interesting illustration of the changes in the vegetation over time. Have a look at the floristic catalogue, clicking on the menu on the left. |
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Example of a distribution map for Purple-stem catstail (Phleum phleoides) | ||
introduction
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Latest revision on: 01/08/2018