Category:Evolutionary Biology
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- Origins of Life
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Remembering E.O. Wilson and Thomas Lovejoy
We celebrate today the lives of two great ecologists: E.O. Wilson, who passed away on December 26 at the age of 92, and Tom Lovejoy, who passed away onDecember 25 at the age of 80. Each made extraordinary contributions to the field of bio-diversity and to the greater public dialog about humans and nature...
Tom and Ed, Pioneering Conservation Biology
Thomas Lovejoy and Edward O. Wilson
The two scientists first met in the mid-nineteen-seventies. At that point, Wilson was in his mid-forties, and teaching biology at Harvard. Lovejoy, a dozen years younger, was working for the World Wildlife Fund. Over lunch, they got to talking about where the W.W.F. should focus its efforts. They agreed that it should be in the tropics, because the tropics are where most species actually live. There wasn’t a good term for what they were trying to preserve, so they tossed one around—“biological diversity”—and put it into circulation. “People just started using it,” Lovejoy recalled, in an interview in 2015. (Later, the phrase would be shortened to “biodiversity.”)
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Evolution
All life on Earth—including humanity—shares a last universal common ancestor (LUCA), which lived approximately 3.5–3.8 billion years ago. The fossil record includes a progression from early biogenic graphite to microbial mat fossils to fossilised multicellular organisms. Existing patterns of biodiversity have been shaped by repeated formations of new species (speciation), changes within species (anagenesis), and loss of species (extinction) throughout the evolutionary history of life on Earth. Morphological and biochemical traits are more similar among species that share a more recent common ancestor, and these traits can be used to reconstruct phylogenetic trees.
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Pages in category "Evolutionary Biology"
The following 3 pages are in this category, out of 3 total.
Media in category "Evolutionary Biology"
The following 11 files are in this category, out of 11 total.
- Daisy Chain Hippie.jpg 564 × 362; 30 KB
- ECOTRAM - Don Perry.png 800 × 474; 390 KB
- Lucy, hominid from the Rift.png 336 × 407; 251 KB
- Protect the Natural World.jpg 800 × 345; 78 KB
- Tree of Life Explorer - Evogeneao.png 800 × 293; 311 KB
- Tree of Life nmicrobiol201648-f1 via Nature.jpg 695 × 833; 98 KB
- Tree of Life on Hand.jpg 336 × 448; 70 KB
- Tree of Life opensourcetreeoflife m.jpg 400 × 365; 47 KB
- We are made of star stuff -- carl sagan.jpg 1,200 × 750; 722 KB
- We are made of star stuff 2-- carl sagan.jpg 800 × 500; 327 KB
- You are here on the cladogenetic tree m.jpg 545 × 521; 73 KB