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Archive for April, 2007

Mitosis

Quickly, a very nice mitosis from a lily, first, and then below in an animal cell… These are nice (dare I say cute?) films found on UTB…
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Mitose

Rapidement, une jolie mitose chez le Lys tout d’abord, puis en dessous chez une cellule animale en culture… Un adorable petit film déniché sur UTB…
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Here is first a list of plant species that I formally identified during the blitz week (there are a few that I didn’t, for I lack time, a good field guide, and a better knowledge of the focal plant). Definitely no trees in the list: too big, no leaves yet (or too young leaves), and I cannot identify them based only on trunk characteristics. Well, it was hard work for me, because many of these species are new to me, except for the European invasive (or conversely, the American species invading Europe). But here it is! (Four small or bigger blitzes so far: the 21st & 22sd of April were in Pittsburgh (the first day in my garden, the second day at Frick Park), and the 24th & 26th of April were near Linesville (PA, at the border with Ohio).

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(some French below)

Hi folks, it’s spring and plants will begin flowering. I have to go to the field for the next two months. I don’t know as to how it will modify this blog’s life yet, but I surely will enjoy a more wilder life and may even have done nice experiments when I’ll come back in June!

Ben oui, c’est le printemps qui s’avance, et ma plante favorite se met à ouvrir des boutons (enfin, pas encore mais elle s’y prépare!). Du coup, nous partons sur le terrain jusqu’à mi juin. La verdure. La nature. La science aussi. Souhaitez nous bonne chance pour les expériences de cette année. Et plein de rencontres naturalistes aussi (sera-ce enfin castoresque cette année? L’année dernière je n’ai vu de cette bestiole qu’une patte s’enfonçant dans l’eau …).

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Blogger BioBlitz 2007Here’s one of the species I have not identified yet, that I’ve met last sunday during my second BioBlitz… If anybody can help with identification of this snake (below), it would helpme fill my Blitz datasheet… :-)

Voici une des bêtes que nous avons rencontré dimanche dernier en nous promenant dans la forêt.

Je raconterai la petite histoire sur cette rencontre (il y en a une, si, si!) bientôt… Pour l’instant j’attends une identification de l’espèce ci présente… Si vous avez la réponse, vous pouvez toujours commenter…

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What’s wrong? Cherchez l’erreur… :-)

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Blogger BioBlitz 2007

(Some French below the fold)


Blogger BioBlitz 2007I signed to Blogger BioBlitz 2007, a blogging naturalist event occuring… now, err this week (from 21-st to 25-th of April). The principle is quite simple: proving systematics is a lot of fun (i.e. naturalizing, botanizing, insecting err bugging, dissecting, flowering, birding, fishing, walking, rooting, making a lot of nice pictures, etc).Furthermore, to the limits of amateur (at least am I) expertise in taxonomy, we may reach an incredible observation of the global biodiversity (at least 0,0000001% of life on earth). Just kidding… I hope we see a lot of living things altogether, documenting species diversity to the best of our ability.

To learn more about official goals and quick history of the event, and to keep in touch with other blogs taking part in this naturalist party, you can read more here, here and starts officially here (and is grossly federated by the Voltage Gate, or at least said I, because I have actually not enough time to go through the whole thing in detail).

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Selfing, or self fertilization, is common in hermaphroditic plants that are self-compatible (i. e. without physiological mechanism to impede fertilization between its own gametes once they are brought together –the point here is that plants can be artificially selfed when one wants to know about the species self-compatibility status).

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L’autofécondation est un phénomène relativement courant chez les plantes hermaphrodites qui sont auto-compatibles (càd. sans mécanisme physiologique pour empêcher la fécondation de ses propres gamètes quand ils sont mis ensembles –le point ici est que les plantes peuvent être artificiellement autofécondées si quelqu’un souhaite savoir le statut de compatibilité de l’espèce en question).

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Just a few comments on the whole bunch of French relationship with science stuff just published in Nature this week. I still wonder why France would deserve so much attention, beside its obviously painfully long divorce between science and politics, even if candidates now play a charming prince game [1, 2, 3].

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