Sentences with phrase «number of trees estimated»

The methodological flaws led to an inflated number of trees estimated in a pre-European Sierra Nevada forest, Levine and colleagues argue.

Not exact matches

It's estimated that over one million trees were planted that day across the Cornhusker State, with prizes offered to the counties and individuals who properly planted the largest number of trees that day.

Around 15 billion trees are cut down each year, the researchers estimate; since the onset of agriculture about 12,000 years ago, the number of trees worldwide has dropped by 46 %.

About 30 years ago, entomologist Terry Erwin of the Smithsonian Institution's National Museum of Natural History in Washington, D.C., came up with an equation to estimate the number of insects in the tropics by measuring how much beetles specialize on tree species.

Number 189 is just one of the more than 100 million trees researchers estimate died during California's five - year drought, which ended this spring.

Estimating the Number of Leaves on the Tree Have students count as accurately as possible the number of leaves on a small twig from theNumber of Leaves on the Tree Have students count as accurately as possible the number of leaves on a small twig from the tTree Have students count as accurately as possible the number of leaves on a small twig from thenumber of leaves on a small twig from the treetree.

Pupils devise a method for estimating the numbers of trees in a plantation then use their method to estimate the numbers of two different kinds of tree.

The storm toppled 150 trees and conservative estimate put the number of memorials and monuments damaged at 100.

More recently, an aerial survey using high - tech laser equipment upended that number, estimating the death toll at close to 120 million trees — as much as 20 percent of the state's total.

Because there will always be an «oldest tree», and overall a smaller number within the oldest age class, the curve estimate will be less robust toward the tail — but unless the behavior of the oldest trees is typically erratic this issue should be of minor importance.

the goal of regional curve standardization is to remove a common age - related growth trend while preserving low frequency climate variability — to have any hope of estimating this you need a large number of trees whose actual period of growth was well - distributed over time.

Re: RomanM (# 275), «there could still be a problem when estimating the age effect due to the very small number of trees with long lifetimes in the sample»

As a result, the number of acres covered by monarchs and counts of monarch - filled trees are thought to provide reliable estimates of colony size.

If the number of trees cut down were halved, experts estimate that it could save close to 500 million metric tons of carbon annually and contribute to the 12 percent of greenhouse gas emission reductions needed to prevent the pernicious effects of global warming.

In the first study of its kind, Chhatre and Arun Agrawal of the University of Michigan in Ann Arbor compared forest ownership with data on carbon sequestration, which is estimated from the size and number of trees in a forest.

The Paperless Project estimates that as many as 51,000 trees per day are required to replace the number of paper towels discarded every day.

Also, a good piece on the first attempt to estimate the number of insect species dependent on (the energy of) one species of tree — http://faculty.plattsburgh.edu/thomas.wolosz/howmanysp.htm

These results were combined with computer models to estimate biomass distribution and the number of dead trees in the region.

A conservative estimate is that chatbots could replace 1 - 800 numbers, offering more comfortable customer support experiences without the hassle of synchronous phone conversations, hold times and annoying phone trees.

They gave me an option of 15 years at 5.25 % or 20 years at 5.7 % that's 460 or so / 406 a month Asking price 62,500 2 bed 1 and half bath 1260 sqft.36 lot MAO: 58,400 Estimated Property Value: 73,000 Repairs: Next to nothing besides carpet and trimming of the tree Rent 550 My plan is to put it up for lease but with those numbers I don't like it.