Saturday, 25 February 2012
Saturday, 18 February 2012
Friday, 17 February 2012
Thursday, 16 February 2012
Wednesday, 15 February 2012
http://www.bbc.co.uk/iplayer/episode/b01c8b5t/How_to_Grow_a_Planet_The_Power_of_Flowers/). The second episode suggested that flowers had driven the development of colour vision in primates, by using colour to signify ripe fruit. One should note, additionally, that some uses of red mean poisonous rather than ready to eat. Even so, it is extremely unlikely that cones in the retina came about solely as a result of manipulation by flowers. Colour vision is important in other sets of circumstances (finding a mate and locating animal prey) and it is much more likely that the plant's signals and the primate detector systems drove each other in evolutionary terms.
http://www.guardian.co.uk/environment/2012/feb/14/washington-deer-cull?INTCMP=SRCH). The Bambis stand accused of causing major damage to forested areas, including completely preventing regeneration by eating seedlings. Accommodating deer within such systems (a relatively small, confined space with no real predators) is difficult as the carrying capacity is likely to be very limited.
Saturday, 11 February 2012
Thursday, 9 February 2012
Tuesday, 7 February 2012
http://www.guardian.co.uk/science/2012/feb/06/mating-call-extinct-bush-cricket?INTCMP=SRCH). This large insect, it has been deduced from fossil evidence, would have produced a 6.4 KHz mating call, which would have been clearly in the human hearing range (many current bush crickets, like the one illustrated, produce calls nearer 20 KHz).
There is a somewhat odd finding that highly toxic Pumpkin toadlets from Brazil apparently cannot hear their own mating calls ( https://w...
A combination of night rain and day-time sun has resulted in more Bynea blooms. The Southern marsh orchid ( Dactylorhiza praetermissa...
A study ( https://www.theguardian.com/science/2017/feb/01/special-spit-is-the-secret-of-uniquely-sticky-frog-tongues-study-reveals ) has...
It is always sad to hear of problems occurring at places you have used for teaching and the outbreak of h5n8 avian influenza at Abbot...