Climate change mitigation strategies ignore carbon cycling processes of inland waters

Washington, Sept 2 (ANI): In a new report, scientists have determined that climate change mitigation strategies ignore carbon cycling processes of inland waters.

Scientists from the University of Vienna, Uppsala University in Sweden, University of Antwerp, and the US based Stroud Water Research Center, authored the report, which is published in the September issue of Nature Geoscience.

They argue that current international strategies to mitigate manmade carbon emissions and address climate change have overlooked a critical player – inland waters.

Streams, rivers, lakes, reservoirs, and wetlands play an important role in the carbon cycle that is unaccounted for in conventional carbon cycling models.

According to Dr. Tom J. Battin of the department of Freshwater Ecology at the University of Vienna and lead author of the report, “While inland waters represent only 1 percent of the Earth’s surface, their contribution to the carbon cycle is disproportionately large, underestimated, and not recognized within the models on which the Kyoto protocol was based.”

The team of scientists points out that all current global carbon models consider inland waters static conduits that transfer carbon from the continents to the oceans.

In reality, inland waters are dynamic ecosystems with the potential to alter the fates of terrestrial carbon delivered to them including: burial in sediments leading to long-term storage or sequestration; and metabolism in rivers and subsequent outgassing of respired carbon dioxide to the atmosphere.

“Twenty percent of the continental carbon sequestration actually occurs as burial in inland water sediments,” said Dr. Lars Tranvik, Professor of Limnology at Uppsala University in Sweden.

“River outgassing of respired carbon, contributes carbon to the atmosphere in an amount equivalent to 13 percent of annual fossil fuel burning,” said Dr. Anthony K. Aufdenkampe, a scientist at the Stroud Water Research Center.

Because the amount of atmospheric carbon is well known and conservation of matter requires a balanced global carbon budget, this previously unaccounted for source of carbon to the atmosphere implies the existence of an additional continental carbon sink such as higher rates of biomass accrual in forests.

“A larger accumulation of carbon in forest ecosystems that could offset the outgassing from rivers would be more consistent with current independently-derived estimates of carbon sequestration on the continents,” said Dr. Sebastian Luyssaert of the department of Biology at University of Antwerp in Belgium. (ANI)

High ozone depletes productivity in oil seed rape plants

Washington, June 29 (ANI): A new research indicates that high ozone conditions causes a 30 percent decrease in yield and an increase in the concentration of a group of toxic compounds within oilseed rape plants.

Scientists arrived at these findings by combining the results of previous studies which have shown a decrease in oil, protein and carbohydrate content of oilseed rape seeds in high ozone.

These results could signal a significant income loss for farmers and an indirect effect on human health and the safety of food in future climates.

The research, done by Maarten De Bock of the University of Antwerp, showed changes in the concentration of glucosinolates, a family of compounds involved in plant defences against herbivores, in oilseed rape plants.

Such changes could influence crop resistance to insect pests, or the palatability of food crops.

As oilseed rape is important as a feed crop, increased levels of glucosinolates may cause problems due to the large quantities of fodder consumed by farm animals.

For human consumption, however, an increase in glucosinolates, in cabbage plants for example, would be favourable due to their anticarcinogenic properties.

Interaction of these factors and their impact on the food web in changing climates will be investigated further throughout the course of this ongoing project. (ANI)

New fruit fly model to help scientists study human disease Charcot-Marie-Tooth

Washington, June 23 (ANI): Scientists in Belgium have created the first ever fly model that can help them unravel the molecular mechanism behind Charcot-Marie-Tooth (CMT)-a hereditary disorder of the peripheral nervous system-by putting mutant genes from human patients into fruit flies.

The breakthrough is the result of collaboration between VIB researchers working at the University of Antwerp and the Katholieke Universiteit Leuven.

“By putting mutant genes from human patients into fruit flies, we’ve created the first ever fly model for this kind of neuromuscular disease,” says Albena Jordanova.

“Now we have the opportunity to unravel the molecular mechanism behind Charcot-Marie-Tooth, as well as to start looking for substances with therapeutic value,” the researcher added.

A research article on the study, appearing in the Proceedings of the National Academy of Sciences (PNAS), reveals that CMT patients suffer from progressive motor impairment, muscle wasting and weakness, sensory loss, and foot deformities.

It further states that the disease affects children as well as adults, and that it often starts with minor symptoms, gradually worsening over time. Presently CMT cannot be cured or prevented.

In a previous study, Jordanova and Vincent Timmerman had found that CMT patients in families in Belgium, Bulgaria and the US showed three specific changes in one of the most ubiquitous genes in life: the YARS gene.

YARS is responsible for the production of one of the oldest enzymes in the history of life (tyrosyl-tRNA synthetase), which is vital for the production of proteins. This was an entirely unexpected breakthrough.

Since YARS had been considered a closed chapter in the biology textbooks, no one ever suspected the relationship with specific variants of CMT until the revelation by Jordanova and her colleagues.

These VIB findings open up an entirely new field of research.

The researchers introduced four variants of the YARS gene into fruit flies.

The normal variant, showed no difference in ordinary fruit flies. However, fruit flies with the mutant YARS genes, showed clear symptoms of CMT such as a reduced capacity to move, decreased functioning of the nerve cells and degeneration of the nerve endings. (ANI)

Power Plate exercise may help fight the flab

Washington, May 12 (ANI): Using Power Plate – a vibrating exercise machine, and consuming a healthy diet may help people lose weight and trim harmful belly fat, according to a new study.

In the study, researchers at the University of Antwerp, Belgium, found that overweight or obese people who regularly undertook Power Plate exercise were more successful at long-term weight loss and shedding visceral or belly fat than those who combined dieting with a more conventional fitness routine and those who simply dieted.

The study was carried out over a six-month period, after which subjects returned to their daily lives and reported back for retesting at 12 months.

In terms of weight loss, the Power Plate group lost 11 percent of their body weight and maintained a 10.5 percent loss.

The diet and conventional fitness group lost 7 percent and maintained a 6.9 percent loss.

The diet only group lost 6 percent, and maintained less than 5 percent loss

Even more promising was the reduction of visceral fat. The Power Plate group lost 47.8 sq. cm. (18.8 in.), and maintained a loss of 47.7 sq. cm (18.7 in.) he diet and conventional fitness group lost only 17.6 sq. cm. (6.93 in.), and maintained only a 1.6 sq. cm (.63 in) loss.

The diet only group lost 24.3 sq. cm. (9.57 in.) and maintained only 7.5 sq. cm. (2.95 in.) loss.

The new research has been presented at the 17th European Congress on Obesity (ECO). (ANI)

Vibration plate machines may help weight loss, trim abdominal fat

Washington, May 9 (ANI): Vibration plate exercise machines, if used properly, may help you lose weight and trim the particularly harmful belly fat between the organs, claims a new study.

In a study presented at the European Congress on Obesity, scientists found that overweight or obese people who regularly used the equipment in combination with a calorie restricted diet were more successful at long-term weight loss and shedding the fat around their abdominal organs than those who combined dieting with a more conventional fitness routine.

“These machines are increasingly found in gyms across the industrialized world and have gathered a devoted following in some places, but there has not been any evidence that they help people lose weight. Our study, the first to investigate the effects of vibration in obese people, indicates it’s a promising approach. It looks like these machines could be a useful addition to a weight control package,” said the study’s leader, Dirk Vissers, a physiotherapist at the Artesis University College and the University of Antwerp in Belgium.

To reach the conclusion, Vissers and his colleagues studied the effects of the Power Plate in 61 overweight or obese people – mostly women – for a year. The intervention lasted six months, after which the scientists advised all the volunteers to do the best they could with a healthy diet and exercise regime on their own for another six months. Body measurements, including CT scans of abdominal fat, were taken at the beginning of the study and after three, six and 12 months.

The researchers divided the volunteers into four groups. One group was prescribed an individually calculated calorie restricted diet. Dietician visits were scheduled every fortnight for the first three months and every month for the second three months. The dieters were asked not to engage in any exercise for the duration of the six-month intervention.

A second group received the same diet intervention, with the addition of a conventional fitness regime. They attended supervised exercise classes twice a week for an hour and were urged to exercise on their own a third time each week. The sessions included group cycling, swimming, running, step aerobics and some general muscle strengthening exercises.

A third group got the diet intervention plus supervised vibration plate training instead of conventional exercise. They were asked not to do any aerobic exercise during the six-month intervention phase. The physiotherapists gradually increased the speed and intensity of the machine each week, as well as the variety and duration of the exercises from 30 seconds for each of 10 exercises to 60 seconds for each of 22 exercises, such as squats, lunges, calf raises, push-ups and abdominal crunches.

The average time spent on the machine was 11.9 minutes per session in the first three months and 14.2 minutes in the second three months.

A fourth group got no intervention. There were no significant differences between the groups in obesity and abdominal, or visceral, fat at the start of the study.

“Over the year, only the conventional fitness and vibration groups managed to maintain a 5 percent weight loss, which is what is considered enough to improve health,” Vissers said.

During the first six months, the diet only group lost about 6 percent of their initial body weight, but could not maintain a 5 percent weight loss in the subsequent six months. The group that got diet plus conventional fitness lost about 7 percent of their initial body weight in the first six months, but they didn’t put much of it back on and by the end of the study, they had managed to keep off a 6.9 percent loss.

The vibration group lost 11 percent of their body weight during the intervention phase and by the end of the follow-up period they had maintained a 10.5 percent loss. The control group gained about 1.5 percent of their original body weight.

The vibration group lost 47.8 square centimetres of visceral fat during the first six months and still had a loss of 47.7 square centimetres at 12 months. Visceral fat shrank by 17.6 square centimetres in the conventional fitness group in the first six months, but by the end of the year, it was only 1.6 square centimetres less than at the beginning. The diet group had a visceral fat loss of 24.3 square centimetres after six months and 7.5 square centimetres after a year. (ANI)

Indian Maritime University to introduce several new courses: Baalu

New Delhi, Feb.18 (ANI): The newly established Indian Maritime University (IMU) will introduce several new courses in the 2009-10 session.

Disclosing this to members of the Parliamentary Consultative Committee attached to his Ministry, Union Minister of Shipping, Road Transport and Highways T.R. Baalu said on Wednesday the new courses would include a program on maritime law in collaboration with the International Marine Law Institute at Malta, an M.B.A. in international transport and logistics managements in collaboration with the University of Antwerp, Belgium, an E.M.B.A. program in maritime management for mariners in collaboration with the Indian Institute of Management, Ahmedabad, and a B.Tech degree in naval architecture and shipbuilding in collaboration with the Indian Institute of Technology, Chennai.

Baalu said that with the inauguration of the Indian Maritime University (IMU) at Chennai on December 31, 2008, the existing seven Government and Government-aided maritime training and research institutes, viz., Marine Engineering and Research Institute, Kolkata, Marine Engineering and Research Institute, Mumbai, Lal Bahadur Shastri College of Advanced Maritime Studies and Research, Mumbai, T.S. Chanakya, Navi Mumbai, the National Maritime Academy, Chennai, the Indian Institute of Port Management, Kolkata, and the National Ship Design and Research Centre, Visakhapatnam, have been merged with the IMU.

The Minister said that with the emergence of the IMU, offering of long-term career to our seafarers will be possible by consolidating the present excellence in the maritime field, providing standardized education and training; creating platform for long term career opportunities and revamping course curriculum as per the need of the various stakeholders such as shipping companies, ports, ship building, dredging and offshore, etc.

Baalu said the university will also provide platform for integrated training, give credit to ship board training, make possible to learn and earn and get diplomas or degrees while working onboard ships, allow midstream joining for higher education and finally provide platform for research and innovation for full shipping industry for the benefit of all the stakeholders.

He said the university has to promote higher learning in maritime studies and the frontier areas of maritime science and technology so that India can remain in the forefront among the maritime nations.

He also informed the members about the progress being made in the surface transport sector.

“Today, if we were to compute the progress in road sector in 1,685 days, i.e., from 1st June 2004 to 31st December 2008, we would find that under NHDP, we have completed a whopping 6,792 kms of National Highways at a rate of 4.03 kms per day. 194 contracts for construction of 9,013 kms of National Highways at an estimated cost of Rs.58, 915 crore have been awarded during this period” Baalu said, adding that the Government has decided to enhance the scope of the original National Highways Development Project (NHDP) from two phases to seven phases which now entails massive unprecedented investments of Rs.2,35,690 crore.

The members congratulated Baalu and his ministry for setting up the IMU and gave various suggestions to improve the functioning of the university.

M. Rajamohan Reddy, Faggan Singh Kulaste, Harischandra D. Chavan, Subhash Maharia, Laxman Rao Patil, Hari Kewal Prasad, Lakshman Chandra Seth, Santosh Gangwar, Mabel Rebello and Sushila Tiriya attended the meeting. (ANI)