The pattern of markers and sequenced genes best fit the scenario of the high-alpine lineage arising from the other two species
and later following its own evolutionary path, the researchers say in a paper that Science has posted online.
In many cases, the details of ecologic parameters associated with occurrences of diseases or of species
participating in disease transmission (e.
Fisher discovered another new species
when he hacked into a log and a swarm of ants ran up his arm and started stinging him.
The act is a safety net intended to stop us before we drive a species
to extinction," says Cat Lazaroff of the law firm Earthjustice.
Four of them consist of diverse associations but are dominated by species
belonging to a single genus, which co-occur with several subordinate genera and a bunch of rare taxa.
Interspecific comparison of rubber biochemistry also can provide information as to the likelihood of being able to over-express or suppress specific rubber biosynthetic genes within (1) the host plant and (2) within a different species
, to achieve the desired effects on rubber yield and quality.
, including the San Fernando Valley spineflower, the Mohave ground squirrel to the endangered Southwestern arroyo toad and the red-legged frog, have emerged on land eyed for development from Ventura County east to the Antelope Valley.
At the same time, he's gallant, generous, intelligent, and articulate, and he knows more than most about the native plants of Hawaii, a state called the endangered species
capital of the U.
He also argues that lawmakers should establish minimum criteria for scientific studies used as the basis for listing species
and require peer review of the data.
Only a small fraction of the world's plant species
has been studied in detail but as many as half are threatened with extinction.
introductions continue at a rate of 20 per year, slipping through on airline flights, in the mail and as ship cargo.
Introduced tree species
have been brought into the United States.
McDonald added that some wood species
do not provide any particular advantage if cooked separately, but they are less expensive and therefore useful as fillers to lower total wood cost.
In southeast Alaska, over forty species
of mammals and birds feed on salmon.
The Building Owners and Manager Association (BOMA) International, a leading advocacy group for the commercial real estate industry, announced that four issues of major concern to building owners and property managers have been added to its already full 1997 agenda: re-authorization of the Intermodal Surface Transportation Efficiency Act (ISTEA); reform of the Endangered Species
Act (ESA); brownfields revitalization; and Superfund re-authorization and reform.