forests
gregladen | August 26, 2016Treecology: 30 Activities and Observations for Exploring the World of Trees and Forests is an excellent new nature activity book for kids of a fairly wide range of ages.
Like a tree, the pattern of the book is pretty straightforward but fractal like; you start off simple but end up pretty much anywhere in the world of ecology. The book begins with the basic definition of a tree, simple tree anatomy, some phylogeny, some tree physiology and biology, but then branches off (pun intended) into things that are related to trees, like things that live on them, eat parts of them, etc. Seeds and…
jhalper | July 6, 2013Right above the tree tops -- where most people might think there is just air -- Prof. Dan Yakir sees a distinctive atmospheric layer in which all sorts of complex exchanges are taking place. CO2, of course, is one of the important ones, and we still don’t understand all of the ins and outs of its flux through the forest, soil and atmosphere. Moisture, heat (and by extension light) and oxygen all cycle through the interface between the forest canopy and the lower atmosphere, as do a number of volatile organic compounds (VOCs) released by many trees. These compounds may contribute to the…
jhalper | April 10, 2011
These guys are as adept with a lug wrench as they are with a mass spectrometer. Prof. Dan Yakir (second from right) and members of his group had to become licensed truck drivers to operate their newest equipment - which is all packed into a custom-built truck for hauling around the country. Until now, Yakir and his team have been working from the Yatir station - a fixed tower set in a pine forest on the edge of the Negev desert. This station is part of a global network that continuously measures carbon exchange and other nutrient cycles in different forest settings. Now, he and his team will…
jhalper | December 20, 2010
Today's guest blogger is Prof. Dan Yakir. Until recently, Yakir was head of the Environmental Sciences and Energy Research Department at the Institute, and he heads the Yatir Forest research station, which monitors, among other things, carbon exchange in a man-made semi-arid pine forest.
This piece comes in the wake of the worst fire in Israel's history, in which extreme drought, winds and a long fire season that depleted fire retardant supplies combined to flame a few embers into a major conflagration that burned thousands of acres of natural scrub forest.Tens of human lives were lost, many…
lborkowski | September 27, 2010The latest issue of The Economist features a special report on forests, which perform valuable services like sequestering carbon and regulating runoff. Because people can easily get paid for timber (or crops grown on deforested land) but not so easily for preserving forests, deforestation is rampant. As countries become wealthier, they generally start taking more actions to preserve their forests, but that process won't happen quickly enough to avert an environmental crisis. The Economist's leader article highlights one strategy to speed the transition - and the challenges it faces:
The main…
grrlscientist | June 11, 2009tags: TEDTalks, ornithology, dodo bird, Adam Savage, streaming video
A unique ecosystem of plants, birds and monkeys thrives in the treetops of the rainforest. Nalini Nadkarni explores these canopy worlds -- and shares her findings with the world below, through dance, art and bold partnerships [18:15]
TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes. Featured speakers have included Al Gore on climate change, Philippe Starck on design, Jill Bolte Taylor on…