Sentences with phrase «insect populations»

Ontario had a very wet spring this year, and this led to the growth of large insect populations — mosquitoes and black flies in particular.

Yeh, one can almost massage heat, moisture, soil nutrients, insect populations, length of growing seasons etc. in a vague, general way, but how does one detect something from a non-event?

The mountain pine beetle in western North America, pp. 505 - 530 in: Dynamics of Forest Insect Populations., A.A. Berryman ed.

The opportunity to study exactly how these animals affect the landscape and its plant, animal and insect populations is tremendous.

We saw virtually no differences between the biology of insect populations reared on the GM cotton and the non-GM cotton... We have indeed seen a dramatic boost to India's cotton, but we had always anticipated that at some point in time, we'll encounter pests that can withstand the modified plants.

We can use this pattern to learn about insect populations over many centuries!

Latin name: Pinus ponderosa A major application of tree - ring research is learning about insect populations.

Warming springs can cause plants to bloom earlier, change the locations of migrating species, alter the awakening time of hibernating animals, and increase the seasonal insect populations.

Sea levels are rising (ask the Mayor of Miami who has spent tax monies to raise road levels), we've had 15 of the hottest years eve measured, more precipitation is coming down in heavy doses (think Houston), we're seeing more floods and drought than ever before (consistent with predictions), the oceans are measuring warmer, lake ice in North America is thawing sooner (where it happens in northern states and Canada), most glaciers are shrinking, early spring snowpacks out west have declined since the 1950's, growing seasons are longer throughout the plains, bird wintering ranges have moved north, leaf and bloom dates recorded by Thoreau in Walden have shifted in that area, insect populations that used to have one egg - larva - adult cycle in the summer now have two, the list goes on and on.

Researchers believe that climate change may be contributing to a worldwide rise in insect populations which, so far, has y...

Despite the lack of an El Niño effect, 2017 is set to be the second or third hottest year on record; hurricanes unprecedented in their power pummelled the U.S. and Caribbean; the largest wildfires California has seen burned deep into the Northern Hemisphere winter; scientists warned the «Arctic shows no sign of returning to the reliably frozen region of recent past decades»; studies revealed an ecological armageddon amongst insect populations; droughts fuelled famine and insecurity across East Africa and the Middle East; the U.N. warned the number of chronically undernourished people has risen for the first time since the turn of the century due in large part to climate impacts.

Spensa Technologies uses robotics and big data to help farmers monitor insect populations on their farms (the old method?

Are there outbreaks of insect populations creating adverse consequences?

They are critical to controlling insect populations that are harmful to forests and agriculture.

Without food or larvae, the insects will die, and insect populations can diminish.»

More than 1,300 species of bats roam the planet playing ecological roles that are vital to natural ecosystems and human economies — from pollinating plants and keeping insect populations in check, to making valuable fertilizer (guano) and dispersing seeds.

Insect populations are much more difficult to manage.

The Committee has been investigating the use of GM insect technologies to fight infectious disease and to control agricultural pests as the technology now exists to render insects unable to transmit diseases, and to reduce insect populations to minimise their threat to animals and crops.

Eating up to two - thirds of their body weight in insects every night, bats help suppress insect populations, ultimately reducing crop damage and the quantities of insecticides used on crops.

One involves engineering reproductive isolation (speciation) between populations that can otherwise interbreed, so as to limit gene flow; a second involves creating genetic methods that can, reversibly, drive populations of invasive species and / or vectors of disease to local extinction; a third involves creating genetic methods that can drive — in ways that are easily reversible — the spread of beneficial genes into wild insect populations so as to prevent the spread of vector - borne disease.

Insect populations are declining.

Scientists developed the method after studying the history of insect populations in Europe and rare pig species in Southeast Asia.

A new way to make specific genes spread faster through insect populations has been developed, paving the way for novel methods of combating insect - borne diseases such as malaria.

Perfect... Except when insect populations develop resistance to the toxin!

Birds play an important role in a wide variety of ecosystems as both predator and prey, in controlling insect populations, pollinating and seed dispersal for many plants, and in releasing nutrients on to land and sea in the form of guano.

«This is a relatively common way that insect populations change over time.

«Studies that aim to predict the consequences of climate change on insect populations should consider additional factors that may ultimately limit growth and survival, such as the risk of being eaten by a predator,» Culler says.

But no one knows how insect populations will respond to such novel plant defenses.

Current paradigms generally assume that increased plant nitrogen (N) should enhance herbivore performance by relieving protein limitation, increasing herbivorous insect populations.

Insect populations there, the thinking goes, would remain susceptible to Bt and keep that susceptibility trait active in the gene pool.

In addition to their role in ecosystems, amphibians also help humans by controlling insect populations — including the mosquitoes that spread diseases like Zika and dengue fever.

If we do nothing at all, scientists warn, the 1,900 threatened species of frogs, newts, and toads could continue to die off, in turn creating a boom for insect populations and wreaking havoc on ecosystems and food webs.

Research shows that non-native plantings have an impact on the diversity of insect populations.

Many insect populations are just as water - dependant as their plant hosts, said Christian Krupke, an associate professor of entomology at Purdue University.

Findings add fuel to the debate over whether a commonly used chemical damages insect populations

Insects are in turn a vital food source for fish, river birds and bats, so where there are healthy insect populations these other species also benefit.

Recent studies in Japan have virtually all found that the abandonment of small, traditionally managed rice paddies results in less biodiversity among the seminatural grasses and weeds that grow on paddy margins and in the insect populations that depend on that vegetation.

«This work makes us think that increasing urbanization and rising temperatures associated with global climate change could lead to increases in scale insect populations, which could have correspondingly negative effects on trees like the red maple,» Dale says.

«The urban and historical data are so well - aligned that we can view scale insect populations in cities as a preview of what to expect elsewhere,» Youngsteadt adds.

To test this prediction, Youngsteadt went to 20 sites where historical specimens were collected from 1970 to 1997 and sampled their modern scale insect populations.

«Recent studies found that scale insect populations increase on oak and maple trees in warmer urban areas, which raises the possibility that these pests may also increase with global warming,» says Dr. Elsa Youngsteadt, a research associate at NC State and lead author of a paper on the work.

Bats are valuable within their ecosystems for keeping insect populations under control and dispersing fruit seeds across the landscape.

i was raised in a very christian home, educated in 3 fields of scientific study, including experiments creating selective pressures to highlight evolution in insect populations, and am certainly atheist now.

We know that, the insect population is about 80 — 90 % of the entire 7,770,000 species, so making a conservative estimate, we will say it is 90 %.

To control the insect population, and keep seedlings insect - free, inspect the plants daily, weed well around the peppers, dispose of diseased plants immediately, and use insecticide if necessary.

«Three - quarters of the total insect population lost in protected nature reserves.»

Crop loss devastation Yet a major die - off of any insect population isn't necessarily a good thing.

A small oil pond could trap thousands of dragonflies when they are swarming, Horváth says, and nobody has studied yet what impact that would have on the insect population.

As the insect population grows, so will the number of predators, he said.

Preventative measures have been focused on preventing the spread of the carrying insect population.