Download PDF by William Bryant Logan: Oak: The Frame of Civilization

By William Bryant Logan

Specialist arborist and award-winning nature author William Bryant Logan deftly relates the pleasant historical past of the reciprocal dating among people and oak timber given that time immemorial—a profound hyperlink that has nearly been forgotten. From the ink of Bach’s cantatas, to the 1st boat to arrive the hot global, to the wagon, the barrel, and the sword, oak bushes were a relentless presence all through our background. actually, civilization prospered the place oaks grew, and for hundreds of years those supremely adaptable, beneficiant bushes have supported humankind in approximately each side of existence. “With an unabashed enthusiasm for his subject” (Carol Haggas, Booklist) Logan combines technology, philosophy, spirituality, and heritage with a contagious interest approximately why the wildlife works how it does. without delay funny and reverent, “this wonderful acknowledgment of a ordinary marvel” (Publishing News) reintroduces the oak tree in order that we would see its shiny presence all through our historical past and our glossy international.

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2011; Lim & Sorensen 2012). 2). 4 Female hormone pheromones co-ordinate reproduction in the goldfish, Carassius auratus, by primer and releaser effects on the male (Stacey & Sorensen 2009, 2011). 3. In the female, the rise and fall of blood concentrations of a succession of hormones (top), from 17β-estradiol (E2) to luteinizing hormone (LH), steroids, and prostaglandin F2α (PGF2α), stimulate release to the water of a succession of hormone pheromones that reflect her hormone levels. First, an unidentified recrudescent pheromone attracts males.

Pheromones themselves can prompt learning. 5), the pheromone stimulates learning of other odors, which will then also stimulate suckling (Coureaud et al. 2010; Schaal et al. 2009). Contact with the male mouse protein pheromone, darcin, prompts a female mouse to learn both his volatile individual signature mixture and the location of the scent mark (Chapter 9) (Roberts et al. 2010, 2012). 2 Biochemical convergence of pheromones among ants, bees, moths and termites and other animals including mammals.

2 to emit rather than secrete).

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