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How Wind Stilling Is Affecting Insects Search For Food

September 21, 2014 By Brian Galloway 22 Comments

wind-stilling-is-affecting-insects

With dramatic change in global weather patterns, alterations are seen in climate, wind speed and other meteorological factors.  These changes have drastically affected animals and plants behavior towards their environment as reported by Brandon Barton in a news release. Brandon Barton is a postdoctoral investigator at University of Wisconsin-Madison. Dr.Brandon with his team analyzed global stilling and its effect on foraging behavior of insects through his research work. The study is published in Journal of Ecology and was sponsored by National Science Foundation. He also shared his experience of witnessing a strong blow of wind bending stalks of corn with his students; the sight forced him to think about the insect dwelling on the stalk and the effect of a heavy gust on the tiny creature.

Global stilling, the term which defines the decline in speed of wind is a complex problem world is facing from past few years. A study with lead investigator Bichet A. reported 0.3% decrease in mid latitude land area wind velocity over a period of 30 years in northern hemisphere. This stilling is hazardous for environment causing significant damage to the ecosystem.

The study done in UW-Madison under Dr.Brandon focuses on the effect of changes in wind speed on insect’s behavior. The word foraging describes the insects’ habit to look for food resources, the behavior is typically important in maintaining an insect’s fitness while functioning and reproducing. This research has basically elaborated the side effects expected after a study previously published concluding 15% decrease in Midwest within the 21st century.

The investigators notified global warming as a major factor behind this stilling phenomenon. The rise in temperature worldwide has decelerated the wind velocity. The air revolving around the world is getting warm declining the temperature difference that led to formation of winds. Nevertheless, colder winds are required to produce strong winds.

For the research work, soybean plants were grown in alfalfa fields, some of the plants were left to grow in the open air, however in the other pots barricades were installed. The lady beetles with their prey soybean aphids were also made part of this experiment. It was observed that lady beetles were found more in plants which were sheltered as compared to aphids preferring windier climates. Although experiments proved presence of aphids in both the conditions but when the predators were added to plants with winds blockage, they eat aphids twice than normal.

Dr.Brandon concluded his study by saying that its difficult for a predator to feed on its prey if their entire world is moving. He also said that if the plant moves with a heavy gush of wind, it takes approximately four hours for the lady beetle to start eating and it eats less than half as many as aphids in an hour.

Filed Under: Health Tagged With: Affecting Insects, Brandon Barton, Insect, Insects, Search For Food, University of Wisconsin, Wind Speeds, Wind Speeds Affect, Wind Stilling, Wind Stilling Is Affecting Insects

Variation in Wind Speed Sways Insects’ Hunting Pattern

September 21, 2014 By Germaine Hicks 1 Comment

wind-speeds-affect-insect-foraging

A recent study conducted revealed that the varying speed of wind or the global tranquil could alter the affect of insects’ pattern of hunting.

With the continuous rise in temperatures and uneven behaviors of rainfall along with the variations in speed of wind could also destroy the biodiversity, researchers at the University of Wisconsin Madison stated.

Brandon Barton, a PhD researcher at UW-Madison, stated in the statement, ‘There are also various other things altering in the surrounding, that is affecting plants and animals and their interactions with each other.”

Barton stated that there were several other things that inspired me to do research work, “I was standing in a cornfield with my students and a huge gust of wind came by bending corn stalks just about twice. We thought, as of the perception of a creature existing in the corn got to have a big effect.”

Moreover, the researcher stated that the poles of Earth are quickly warming up resulting in lowering the temperature disparity, which enables the formation of winds. In contrast, the man made buildings and structures have slowed down the speed of wind.

According to the scientists, some insects such as Asian Lady Beetle are heavily affected by the variations in the wind speed.

In order to conduct the study, the researchers grew soybeans in the fields of Alfalfa. They also set up the barricades in some sections, as some were left unwrap to the natural wind.

The researchers found that, the Asian Lady Beetle is giving more preference to the sheltered area and their quarry, which is the soybean aphid, cherished living in the wind brushed fields.

Barton further stated that said that, “The soybean emerge on the plants irrespective of the fact that it’s windy or not. We effectively displayed this in lab experiments. Although when the marauders were added with the wind block, the Lady beetles ate a bit like twice as many soybeans,”

Furthermore, the researchers told that they conducted controlled laboratory experiments and stirred wind speeds by twisting and shaking the plants. We have observed that Lady beetles were more likely tending towards a still plant rather than those who are continuously moving.

Barton explained the study in simpler way by saying, “How will be the job of a marauder can be done if the entire world is moving around? Similarly, if the plant is continuously stirring, it takes 4-times as long for the marauder to initiate intake. Moreover, it’s also negatively affect the ability and effectiveness of eating as it can eat less than half as many soybean aphids in an hour.

This study was funded by National Science Foundation and has been published in the journal Ecology.

Filed Under: Tech & Science Tagged With: Affect Insect Foraging, Brandon Barton, Insect Foraging, Speeds Affect, University of Wisconsin Madison, Wind Speeds, Wind Speeds Affect

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