By Laura Husband

Four of the 10 worst countries for environmental impact are from the American continent, a new study has found.

The study, carried out at the University of Adelaide, in Australia awarded Brazil and the US first and second place for being the least environmentally friendly.

Ecology expert Corey Bradshaw from Adelaide’s Environment Institute gave countries environmental rankings based on how much they had damaged the environment.

Fisheries were one of seven factors measured that made Brazil the least environmentally friendly country.

The countries were rated using seven factors: Natural forest loss, habitat conversion, fisheries, fertiliser use, water pollution, carbon emissions from land use and threat to species.

These indicators were chosen because there is a lot of evidence to support that they affect ecosystems and quality of life, explained Bradshaw.

From the American continent, Brazil, the US, Mexico and Peru were all listed in the 10 worst countries category along with China, Indonesia, Japan, India, Russia and Australia.

The total wealth of each country was found to be the most important driver of environmental impact.

The top 10 for being most environmentally friendly were, surprisingly, some of the least wealthy countries, mainly from the Caribbean and Africa: Antigua and Barbuda, St Lucia, Grenada, Djibouti, Barbados, Swaziland, St Vincent and the Grenadines, Gambia, St Kitts and Nevis and Tonga.

“There is a theory that as wealth increases, nations have more access to clean technology and become more environmentally aware so that the environmental impact starts to decline. This theory was not supported by our study,” explained Bradshaw.

By Paul Rodgers

Most creatures that use sound do so for communication, to find a mate, warn off rivals or warn of predators. Bats, and a few other creatures, such as cetaceans, use it differently. Their calls are designed to locate obstacles, prey and each other in space. Or so scientists thought.

Bats can, it turns out, distinguish between calls made by members of their own species and others, even those that are closely related and inhabit similar ecological niches, according to research by scientists at the Max Planck Institute for Ornithology (previously part of the Kaiser Wilhelm Society, which was renamed in honour of the quantum physicist after the Second World War).

Horseshoe bats can hear foreign accents.

Bats living in similar environments tend to use similar echolocation calls to orient themselves and search for food. But in a paper in this month’s American Naturalist, Maike Schuchmann and Bjorn Siemers at the institute’s facility in Seewiesen, Austria, were able to prove that echolocation calls carry more information than assumed.

Horseshoe bat species in Bulgaria were used for the behavioural experiments, in which scientists played the calls of three different species through ultrasonic speakers and analysed the animal’s responses. Both the Bulgarian bat species showed signs of being able to distinguish the calls, although the effect was clearer with calls that were in a clearly separate frequency band from their own.

Siemers reasoned that it would be advantageous for bats to get out of the way of competitively superior species in hunting grounds. And if the other species roosted in similar roosting requirements, identifying them could help the bats find new shelters. The institute’s scientists hope to do follow-up experiments to see whether either of these hypotheses explains the new-found ability.

By Grace Howe

Natural historian and filmmaker Keith Scholey is producing three full length wildlife documentaries that will examine the behaviour of cheetahs, tigers, and lions in their natural habitat.

The first film, due for release in America this autumn, is entitled ‘Big Cats’. Five years in the making, it was made primarily using the new Sony F23 camera, which is discreet and advanced enough to cause minimal interference in any animal’s environment. The camera can be left for days in the wild without needing attendance or interruption from human hands.

This technology provided a unique opportunity for capturing animals in a gathered community. The film is an attempt to view these creatures in an entirely new way, by allowing their natural behaviour and interaction with each other to create a storyline and give phrasing and drama to the piece, with little influence or explanatory commentary from the BBC editing team.

Cheetah with impala kill

I spoke to Keith, co-producer of the Blue Planet and Planet Earth series, about the idea behind this new film and how the production has developed since the final rushes were gathered.

“Keith, What inspired you to become a filmmaker instead of sticking to science on paper? You began this journey with a biology degree!”

“In a rather geek-ish way, the subject just obsessed me, I wanted everyone to be interested in what I was interested in, and excited by the same sights. During travelling and in my first jobs in wildlife documentary, I felt enormously privileged to view what I had done and intrigued by the possibilities of sharing it.”

“In this film, you have attempted to capture the essence of how the Masai-Mara lions and cheetahs interact with each other. It is based in Kenya, and offers a view a to how these big cats live and function in their own life journey, and to create a feature film instead of an ‘informative documentary’ Why did you decide to film with this new objective?”

“We wanted to show these beautiful animals in an entirely new way. It is an attempt to explore how they live and communicate. That animals are aware of their life and their own life span is left to the side of most documentary explanation. This film is shot over two generations of each species, so there is the family line to follow.

I wanted to show that cats are aware, as we are, of preference, sadness, meanness, and character. The looks, the mood-changes, the treatment they give each other and the way they strive to survive. After four years of observation we realised that what we were seeing was moving, in a new way, a story of life as well as wild scene. I wanted to communicate that.”

“Films that create an affinity with animals can help to ensure that we prioritise conserving them. Did you have this objective in mind when you made the film?”

“No! We want to take the viewers completely away from themselves. We will not have a voice-over commentary as yet, and we are undecided on where to put necessary explanation, but it is not about human intelligence. What we learnt from it was the clear and gruesome methods of survival. The ruthlessness, determination, affection, love, fear. That is how we found the story line, in the interaction, the strong and weak characters and how they live together.

Particularly fascinating to me was how the female cheetahs are driven to protect their young and fend for themselves in the treacherous environment with the lions. In other parts as with the blue whale young in Blue Planet, we see how and when the mother is driven to desert her young in her own effort to survive - how long it takes them to let the cub go. The film also compares the two challenges of living and breeding within a gang, and living as a solitary parent.”

“The things we expect to divide us from animals, the consciousness that they supposedly don’t have, the decision-making, liking and dislike, love and hatred, exists within any community.”

“All wildlife explanation is best when it increases compassion for animals. In many ways this film can teach human beings, not about their own lives or mind, but how most of what they do and respond to depends on survival and instinct, rather than intelligence. That is what I hope to achieve! We want to show that any animal community contains just as much of the complexities of human nature that we credit as being part of intellect and thought, and the human brain. Our study I believe showed similarities with the human relationships we form and the affiliations we value.”

“Since the earliest natural history documentary films, it has been very influential to include the human touch in some way, with music, commentary, or explanation. Natural scientists such as David Attenborough have set the example of always communicating not just the landscape, the place, the atmosphere, but their own affinity with the animals, which in turn moved people to understand the environment better and to understand animal similarities. Now you are moving away from this as a production team, what will be the biggest hurdle to promoting your film?”

“We specifically aim to reach audiences that would never dream of watching a documentary on television! The time constraints of people’s lives allow for entertainment to be allocated, and it must be a promise to be entertainment, and a break from the routine. We hope that for America in particular they will respond brilliantly to something presented as a full story, with a storyline, and the Disney sponsorship ensures the kind of publicity environmental issues need if we hope to help our wildlife and planet. We had to say yes! I hope it will mean that the next generation get involved in animal conservation as we are.”

‘Big Cats’ will be release across America in September of this year.

By Louis Jagger

Over the last few months, an unusual website has attracted thousands of viewers to discover more about one of the world’s most beautiful birds - the barn owl.

The website, Sportsman’s Paradise Online, has set up a live internet feed inside a barn owl nesting box. Viewers have watched the chicks grow from indiscriminately cute bundles of open-mouthed hunger into their current, almost fully-fledged state.

A barn owl

Another section of the website offers information about barn owls and the testimony of those who set up the camera, in San Marcos, California. Given the 59.000 Facebook shares, 4,000+ comments and 1,195 retweets, it’s safe to say that these owls have touched internet viewers in a way that few organised nature documentaries could have done.

And this nest isn’t the only one being transmitted freely across the internet. The Franklin Institute Hawk Nest cam is currently broadcasting on Ustream with a very young brood of red-tailed hawk chicks, a live chatbox full of enthused bird-lovers, and that all-important link containing more information about The Franklin Institute and its nest-observing project.

Quite what it is about birds of prey which so captures the imagination is up for debate, but on cuteness alone these unwitting internet superstars could charm their way into anyone’s precious internet routine. One might argue that this is an invasion of privacy, but as the birds are unaware of the camera, and grow up normally, it ought to be seen as an opportunity for regular people with a passing ornithological interest to inform and educate themselves upon the mysteries of avian youth. The joy of watching a helpless ball of down grow into a powerful, ruthless winged predator, live on your laptop screen, is a unique experience to say in the least.

And if you’re especially interested in this on-demand nature-viewing, the Sportsman’s Paradise Online site has a link to several other live wildlife cameras you can explore

By Grace Howe

A visit to your local duck-pond can present a few surprises now that new cross- breeds and non-domestic wildfowl have fully integrated themselves into British wetlands.

National Trust conservationists, who manage parks such as Osterley Park and the vast expanses of Hampstead Heath in London, are raising concerns about the number of species now vying for space and shelter within the diminishing lake and pond areas of Britain.

A mallard duck

Most commonly seen in wildfowl parks across London now is the large red South African mallard duck, a relation to our very common British mallard. Although the birds cause intrigue for onlookers, with their beautiful red, black and tawny markings, they are felt to cause a hazard when it comes to feeding time. The South African mallard is up to four times the size and three times the height of its British counterpart, with a neck and body length of a goose. It can also reach for food far quicker than any other species commonly seen and can move quickly on land - where our water-bound ducks have not yet adapted their waddling manner for, despite the competition. We are used to seeing and feeding the common African black duck and the Asian white–faced whistling duck, yet these birds have posed little threat as they require roughly the same space and maintenance as our domestic breed.

Conservationists believe that these new species have been breeding in Britain for nearly three years but have only recently produced a sustained population growth that enables them to infiltrate our local city parks and be seen by the public.

Anine Akhtar, head of nutrition at the Wildfowl and Wetlands centre in Barnes, commented that “the problem here is not about conserved areas, because here we can ensure that all species receive adequate care and food. But in unmanaged areas such as local ponds and council-owned parks, there is the threat that the larger birds will take over. They take over space, nutrition, and water space.”

When asked if these changes are attributable to global warming influences and changes to the British climate, he said: “It is more a result of travelling and smuggling birds unfortunately, although the warmer winters here have certainly changed how all species of plant and wildlife breed, even within the last ten years.”

If you see these birds around, make sure you’re looking out for their less glamorous cousins.

By Smitha Peter

According to United Nations Convention, every child has a right to not to go hungry and provision of free school meals is a way to address this problem. But how effective is the school meal program in UK at present? “More than one million children living in poverty don’t qualify for free school meals as per current policy and 39% of those who are eligible won’t take them,” said Professor Martin Caraher, Centre for Food Policy, City University in his lecture on the topic ‘Food Poverty and Inequality: The growth of hunger in the UK’.

Healthy school meals have the capacity to reduce dietary inequalities. Image credit: Henrique Dante de Almeida

Current policy excludes secondary school children from working house holds with a low income. This means around 60% of secondary students living in poor household are not eligible for free school meals. At the same time many children who are eligible won’t take it because of the issues related to stigma and availability of low priced unhealthy food.

The Low Income Diet and Nutrition Survey by Food Standard Agency reveal that children from low income families eat more fast food and processed meat than those from richer background. They often eat inadequate level of iron, folate and vitamin D.

The Survey also observed that 36% of low-income population cannot afford to eat balanced meals, 22% report reducing or skipping meals and 5% do not have enough money to eat for a full day. Local variation in food prices makes the existing situation worse.

Providing free school meals to all children from households earning below £20,000 a year would cost an extra £1.53 billion a year. However, it can reduce the cost of health related diseases and can increase work place productivity in long run. At present child poverty costs the health care system £2 billion a year.

Children currently eligible for free school meals:

  1. Children whose parents are getting
    • Income support
    • Income-based jobseeker’s allowance
    • Income-related employment and supporters allowance
    • Support under part VI of immigration and asylum act
    • The guarantee credit of pension credit
  2. Children whose parents are workless, with an annual income of £16,190 or less
  3. Primary school children from working house hold with an income below £16,190

Children who are not eligible:

  1. Secondary school children from working households with a low income
  2. Primary school children whose parents have a household income over £16,190

By Jennifer Green and Julius Goldthorpe

Japanese Knotweed causes millions of pounds worth of damage to buildings and roads in Britain every year. If attempted, eradicating the weed using traditional methods would cost around £1.5 billion pounds. But scientists have Cab International think they have come up with a natural solution, a tiny psyllid from Japan. The bug, set to be released here this year, will be the first live agent introduced in Europe to control a weed…

By Smitha Peter

A recent study by Natural England on threats to biodiversity revealed that the country is losing more than two animals and plants a year. A region-wise list of lost species of England published in the Guardian, based on the study; shows an interesting fact- six out of eight regions listed have lost a butterfly/moth species. This includes Marsh fritillary, Scotch argus and Chalkhill blue.

Marsh fritillary. Image credit: Julio Reis

The report warns that almost one third of the butterfly species across England is in decline. According to the European red list report for the European commission, intensive farming, climate change, forest fires and expansion of tourism are the major threats for the habitat.

“Many of the grass varieties cultivated for animal feeding are not butterfly friendly. The farming techniques based on monoculture with little plant diversity worsen the situation,” says Malcolm Bridge of Butterfly Conservation, one of the prominent insect conservation societies in Europe. Loss of grass land habitat has severely effected species like Marsh fritillary.

“It is difficult to reintroduce a butterfly species once its habitat is destroyed in a particular region. The butterfly colonies are usually located far apart. So even if the habitat is recreated, butterflies may not be able to travel back,” he added. Reintroduction of woodland butterflies like Pearl- bordered fritillary often faced this problem.

Wood white. Image credit: Clemens M. Brandstetter

Butterflies play an important role as pollinators in the ecosystem. They are often regarded as an indicator of a healthy environment. The population movement of butterflies are often analysed to get information about the changes in climatic conditions.

Here is some interesting information about the butterflies wiped out from different parts of England.

Yorkshire and Humberside/ East Anglia- Marsh fritillary butterfly

It is a charming butterfly with orange, brown and yellow chequered markings on wings. They live in colonies and occupy different types of habitat including hillsides, moor land, and meadows. The mating ritual of the Marsh fritillary is interesting. After mating, the male seals the genital opening of the female with a substance to prevent another male mating with her. They might be the first species discovered the use of ‘chastity belt’.

East midlands- Wood white butterfly

The Wood White is a delicate butterfly with a very slow flight. The males have a black spot at the tip of the forewings which is greatly reduced in the female. This butterfly lives in discrete colonies and can be found in wood lands and meadows.

West midlands- Chalkhill blue butterfly

Chalkhill blue. Image credit: www.entomart.be

The males are pale sky blue in colour, while females are chocolate brown. They live in groups and can found roosting communally in grass stems at hillsides. As the name suggest, they inhabit areas with chalk or lime rich soil. Food includes nectar from a variety of sources and minerals gathered from soil and animal droppings.

North West-Scarce crimson and gold moth

They are small in size with pink, yellow and grey shades in wings. The preferred habitat is costal dunes with plenty of wild thyme, the larval food plant. They are very active during warm weather, especially in June and August.

North East-Scotch argus butterfly

Scotch argus is a dark brown butterfly with a row of black eye spot on each wing. They are found in tall grass lands and are fond of sunshine. During sunny days males fly restlessly in search of a mate, while females spend their time basking. Their main food plant is blue moor grass.

Reference: http://www.ukbutterflies.co.uk/index.php

By Smitha Mundasad

Sensors that could be implanted in the body to collect data about fracture healing are being developed by Turkish and American researchers.

“More than 10 per cent of fractures do not heal properly, but doctors are not able to see the bones healing, instead they have to make educated guesses,” said Emre Unal, a nanotechnologist at Bilkent University in Turkey.

X-ray of fractured femur. Image credit: Smitha Mundasad

In experimental models, sensors are applied to metal plates, similar to ones used by surgeons to fix fractures in place. The wireless sensors can then pick up information on the strain applied to them.

The nanotechnologists hypothesise that, over time, as bones heal and patients start to become mobile, less strain will be detected by the sensors as more will be taken up by the healing bone. When fully developed, they suggest, a doctor could monitor strain data over time to check whether a fracture is healing as expected. This important information could be obtained without scans and invasive procedures.

Experiments are currently taking place on sheep metatarsals in the US, which show promising results.

There are still, however, many barriers that need to be overcome if this is to become a clinically useful tool. “Sensors will need to be made of biocompatible material, and tests will have to take place on human bones,” explained Unal.

“Nanotechnological advances are set to make a huge contribution to medicine,” said Mohan, a Bristol surgeon.

By Smitha Peter

Frogs are often treated as environmental indicators because of their extreme sensitivity to changes in the ecosystem. According to the American Museum of Natural History website, scientists have recorded a major decline in the frog population around the world during the last fifty years as a result of habitat destruction, chemical pollution and climate changes.

Image credit: LiquidGhoul

A recent study on the timing of frogs spawning in the UK indicates that the future of these delicate creatures is at risk in the changing climate as they are genetically adapted to the local climatic conditions. The study, published in Proceedings of the National Academy of Sciences, used more than 50,000 records to find out how frogs are responding to variation in temperature across different parts of the UK.

During warmer years, frogs spawn in early spring to maximise the survival chance of offspring with a longer period for their development. The new study revealed that frogs in the warmer South West region spawn up to seven days earlier than those in the colder Northern region of UK. This shows that they are well adapted to their local environment.

However, this makes them more vulnerable to the temperature changes caused by global warming. It has been predicted that the temperature will raise by up to 1.7C in North East and 3 C in South West between 2050 and 2070. As a result, the frogs in the Southern part need to spawn about 30 days earlier, which is very unlikely to happen in this short time period. Otherwise they should move to further North to find favourable conditions. It is impossible for most of the frog population in the South as the English Channel acts as a a total barrier to any Continental migration.

According to the Woodland Trust, the resource for records utilised in the study, a large number of the UK’s wildlife species may face similar challenges.