Nature in L.A.

Showing posts with label : dragonfly

December 6, 2016

Dragonfly Mouthparts Under the Microscope...the Scanning Electron Microscope

These monstrous looking pinchers are the mouthparts of a dragonfly larva imaged with a Scanning Electron Microscope (SEM). Amazingly, this image wasn’t taken of the animal itself, but rather of its abandoned exoskeleton (called an exuvium) that the larval and freshwater-living dragonfly (or naiad) leaves behind when it becomes a winged dragonfly. This dragonfly and the ones below are from the family Aeshnidae. 

A green darner dragonfly at NHM's Nature Garden. This is a female ovipositing (egg-laying) in the vegetation.

Below is the...

July 12, 2013

Fire in the L.A. River

Many of you know I am a huge L.A. river fan. As a fan of the river and an advocate for river access, I was of course shocked and worried to hear about the fire that took place in the pilot recreation zone last Saturday.

The fire raged on a sandbar adjacent to the river bike path (image courtesy of Anthea Raymond).

The fire was caused by a gasoline tanker that crashed in the interchange tunnel between the 2 freeway and Interstate 5 (incidentally causing some of the most heinous traffic some of us have experienced in a long while). After it overturned, some of the 8,500 gallons of gas it was transporting leaked into a storm drain and traveled about half a mile into the river. The resulting fire was thankfully constrained to a...