If you need a sticker for February 12th (Darwin’s birthday), I finally got myself set up on Redbubble. They claim the stickers will survive 18 months outside, which is great news for those not allowed to bring evolution material in the house. I’ll eventually put up my translated versions, too, so if you need this in Arabic, be patient.
If you’re curious, I designed this image because I wanted a way to show my fondness for evolution but thought the “evolution fish” (the standard image for science and reality fans) was a tad too offensive. More details on my Charles Darwin Has A Posse page.
Photograph above by Paul Begley (Flickr).
Posted in Biology, Graphic design, Science
Tagged biology, charles darwin, charles darwin has a posse, gift, mug, natural history, present, science, stickers, t-shirt
To get myself excited about Spring, I typed up some thoughts on how to protect fruit and vegetable gardens from squirrels. Have a look if that relates to your life.
Posted in Biology, Gardening, Photography, Science
Tagged cage, damage, fruit, garden, illegal, kill, law, legal, legality, nuisance, poison, rodent, shoot, squirrel, tomatoes, trap, trees
Below are three photographs of mistletoe seeds I took at La Selva Research Station in Costa Rica. Seeds were most likely deposited by birds perching on the signs, but I’m not sure whether the birds scraped off the seeds (which can be extremely sticky, due to presence of viscin threads) or simply pooped them. If the latter was the case, the bulk of the poop is long gone, but it rains enough in the tropics for that to happen. There are threads visible on the top photograph, so I’m going to guess that the seeds were attached to the birds somehow, and the birds scraped them off onto the sign.
By the way, mistletoe are parasitic plants … which is why it’s amusing (to me) that they were on a sign. Although they are clearly green and can photosynthesize, they’ll eventually need the water (and other xylem contents) from a host. Under those adhesive pads there is (or will soon be) a haustorium that will attempt to burrow into the substrate in hopes of finding host xylem. If I lived at the station I’d naturally record how long these beasties survived, but staff probably clean off the seedlings every few weeks just so it doesn’t look to nasty. Some species can apparently last a year as self-sufficient seedlings.
Posted in Biology, Education, Graphic design, Photography, Science
Tagged bird, costa rica, dispersal, germination, mistletoe, parasite, parasitic plant, photosynthesis
Some photographs I took during a visit to La Selva Research Station in 2008. Old, but recently discovered they hadn’t transferred to my site when I bailed on Flickr.
I was stuck inside a small room for most of stay (I was consulting for Organization for Tropical Studies), unfortunately, so not as many pics as I’d like. The full album (approximately 50 images) is below. I wish OTS would hire me again.
This little spider is a golden orb weaver (Nephila clavipes), I think:
Jackfruit (Artocarpus heterophyllus) still attached to the tree:
Bromeliad on branch:
My high-security hotel in San José,
Just mouse-over the thumbnails below to see title, or click to see larger.
Posted in Biology, Education, Photography, Science
Tagged animals, costa rica, La Selva, natural history, Organization for Tropical Studies, OTS, photography, plants, research station
Here are some photographs from my December visit to the Baylands Nature Preserve (2500 Embarcadero Road, Palo Alto, CA 94303). I missed the king tide, unfortunately, but will hopefully see that in the future, ideally before they start rearranging the park topography and water flow (e.g., constructing tall refuge hills where the adorable saltmarsh harvest mouse can escape to during king tides). Without a doubt the nicest landfill I’ve ever visited.
To see the whole album, click on any of the images below and use the arrow key to advance. Clicking on the titles will take you to my photo site (where you can read captions and such).