Monday, October 29, 2007

CEs to promote biodiversity

Bhopal, Oct 25: With the objective of promoting biodiversity, the Madhya Pradesh Council Of Science and Technology (MPCOST) will establish Centres of Excellence in the state. ''The centres -- whose setting up coincides with completion of MPCOST's silver jubilee -- will serve as a medium for enhancing scientific efficiency, technical capability, quality control, according priority to work relating to medicinal and aromatic herbs,'' MPCOST Working Committee Chairman Mahesh Sharma told reporters here today.
The conclusion of the jubilee year would be marked by a three-day Indian Science Conference to get underway here on November 23. The October 27 meeting of MPCOST's Permanent Committee would provide final shape to Conference programmes. A Youth Science Conference is also on the cards.
''Decisions were taken to constitute a Madhya Pradesh Science and Technology Network for MPCOST's statewide expansion, make the Council's Remote-Sensing Centre more effective, initiating programmes for improving MPCOST activities and recruiting scientists,'' Dr Sharma added.
The centres would focus on special skill upgradation of students, youth, farmers, craftspersons and women in the unorganised sector. In three months, MPCOST intends to create a network with two other agencies.
''The Remote-Sensing Centre has begun working on a project affiliated to the Indian Space Research Organisation and on schemes related to the state government's Education, Public Health, Tourism, Environment and Housing departments. Through the medium of the United Nations International Children's Emergency Fund, the Remote-Sensing Centre has taken up a programme for improving potable water sources,'' Dr Sharma explained. Data was prepared on 80,000 of the state's total four lakh sources and a Telemedicine Scheme prepared.

Biofuels Damaging Ecosystems And Biodiversity

LONDON (Dow Jones)--Increased demand for biofuels, along with other agricultural commodities, is resulting in ecosystem degradation and biodiversity loss, said the U.N. Thursday.

Expansion of the agricultural industry, including the rise in land used for biofuel production, could impact particularly negatively on ecosystems supporting poor populations, according to the U.N.'s Global Environment Outlook 4 report.

With the world population forecast to grow to over 9 billion by 2050, food production will need to increase significantly to meet demand, the report said, noting the conflict between agricultural commodity demands for both food and fuel.

However, the U.N. was not particularly optimistic about any near-term relief to the food versus fuel tension or technology developments within inedible biofuel sources.

"Forest products and the nonfood cellulose component of food crops have a huge potential as an energy source, but technologies are still too costly to compete with fossil fuels at current prices," said the report.

Drought Can Destroy Biodiversity

Tue Oct 23

The skimmer and swimmer critters in ponds dried out by drought end up looking the same as each other when waters return, causing a decline in biodiversity, a new study finds.
In worst-case outcomes, drops in biodiversity—the variety and number of species, in a given locale can lead to more serious consequences, such as resulting in ecosystem collapses that affect the web of life and food that supports all animals and humans.
Scientists are more interested than ever in the effects of extreme climate swings, such as prolonged drought, because the computer models predict wilder extremes as one effect of the climate change now underway.
To learn how drought affects pond life, Jonathan Chase, an ecologist at Washington University in St. Louis, imposed drought conditions on 20 artificial ponds and investigated how the harsh conditions affected the species counts and varieties.
Each pond community had the same environmental conditions, but Chase varied the timing of the introduction of species, such as dragonflies, water-bugs, frogs, water fowl and algae, before letting the species naturally flourish.
As the communities began to thrive, the species took hold to varying extents pond by pond, with some harboring only 10 to 20 percent of species in common. Some of the variation was due to plants being randomly introduced as they fell from the feathers of a duck, for example.
After pond communities established themselves, Chase imposed the drought conditions on half. When those ponds were allowed to recover from drought and life moved back in, their species content looked much more similar to each other.
“Drought homogenizes the variance among communities,” Chase said. “It takes all these communities that used to be very different from each other and makes them very similar to each other.”
Why? Because certain species are much hardier than others and are quicker to re-establish themselves once the drought subsides.
"When it comes to drought, there are wimpy species and hardy species," Chase said. "Several types of zooplankton, many water-bugs and some frogs are the hardy ones. A wimpy species, perhaps surprisingly, is the bullfrog. Their tadpoles require two years to grow, so they often don’t rebound very well from drought. “
Zooplankton deposit their eggs in mud, so they lay low until waters return, whereas frogs leave the pond when it dries up. Algae and a few plant species that make lots of seeds also weather droughts fairly well, Chase said.
His study, detailed in the Oct. 15 issue of the journal Proceedings of the National Academy of Sciences, establishes an important distinction between local biodiversity (in one pond) and regional diversity (between several ponds), the latter of which is often overlooked, Chase said.
“I found drought had less than a 10-percent reduction on local diversity, but a nearly 50-percent reduction on regional diversity," Chase said. "This is important because if you just count the number of species in any given pond you might say that drought had little effect on species diversity. But if you take exact data and you ask: 'Did drought affect regional diversity?' I found it had a huge effect on regional diversity.”

Parasites A Key To The Decline Of Red Colobus Monkeys In Forest Fragments

Oct. 28, 2007) — Forest fragmentation threatens biodiversity, often causing declines or local extinctions in a majority of species while enhancing the prospects of a few. A new study from the University of Illinois shows that parasites can play a pivotal role in the decline of species in fragmented forests. This is the first study to look at how forest fragmentation increases the burden of infectious parasites on animals already stressed by disturbances to their habitat.
The study, of black-and-white colobus monkeys and red colobus monkeys in tropical forests in western Uganda, appears in the American Journal of Primatology.
Once dominated by vast forests, Uganda now has less than one-twentieth of its original forest cover. According to the World Resources Institute, its tropical forests are being logged and converted to agricultural land at a rate that outpaces sub-Saharan Africa as a whole. Small tracts remain, however, hemmed in by pastures and croplands. Many of the species that thrived in the original forests are struggling to survive in these parcels, which can be as small as one hectare in size.
“In Uganda, just looking at the primates, it’s one of the most biodiverse places on the earth,” said professor of pathobiology Thomas Gillespie, principal investigator on the study. “You’ve got 12 to 13 species of primates in a core undisturbed forest. But if you go into these forest fragments, you’ll find only three or four species of primates.”
Populations of black-and-white colobus monkeys appear to be stable in the Ugandan forest remnants, while their cousins, the red colobus monkeys, are in decline.
Gillespie and his colleague, Colin Chapman, of McGill University in Montreal, surveyed 20 forest fragments near the western boundary of Kibale National Park, in western Uganda.
They compared the abundance, variety and density of potentially harmful parasites in these fragments to the undisturbed “core forest” of the park.
The researchers followed the monkeys for four years, collecting data on how far the animals ranged, what they ate and which parasites were infecting them.
In those four years, red colobus populations in forest fragments declined 20 percent, whereas populations of black-and-white colobus monkeys remained relatively stable. Both species maintained stable populations in the undisturbed forest.
Scientists have struggled to explain why closely related animals, like these two species of monkeys, can fare so differently in forest fragments. The answer, Gillespie said, lies in a complex interplay of factors, with parasites and nutrition playing key roles.
The researchers focused on two nematodes known to cause significant pathology in monkeys: a whipworm, (Trichuris sp.), and a nodule worm (Oesophagostomum sp.). While feeding on leaves, the monkeys ingest the larval forms of these worms. The larvae mature in the intestines, where they can cause blockages or other damage. The nematodes migrate through blood vessels, causing inflammation, organ damage and, sometimes, death.
The researchers found a higher density of parasites in the forest fragments than in the undisturbed forest. They also found new parasites not seen in the undisturbed forest.
“Several of the parasites in these animals in the fragments never occur in undisturbed forest, and some of these novel parasites are definitely from livestock or people,” Gillespie said. The red colobus monkeys were infected with five of these human or livestock parasites; the black and white colobus carried only two.
Other differences between the two species affect their vulnerability to parasitic infection. Red colobus monkeys congregate and live in large groups, with up to 50 members, compared with about 10 members in the black-and-white groups. Red colobus monkeys eat a much more varied diet. This causes them to travel farther, searching for the foods they need. But many of the plants that make up their diet simply aren’t available in disturbed forest fragments.
“The red colobus typically eat 40 to 50 species of plants, but in these forest fragments we might only have 12 tree species, so there’s a dramatic reduction in what we typically would see them feed on,” Gillespie said.
“The black-and-white colobus tend to feed on whatever’s dominant. They make do with what’s there.”
The black-and-white colobus monkeys’ ability to eat well under a variety of circumstances enhances their ability to withstand parasitic infections, Gillespie said.
Red colobus monkeys’ travels bring them into contact with more parasites. Their compromised nutritional status also weakens them, giving parasites the edge, Gillespie said.
“We asked how parasitism plays into this dynamic of some species doing well and others not doing well after forest fragmentation,” Gillespie said. “This is giving us a new window into what’s happening.”

Biodiversity takes a hit

October 28, 2007
Wildfires last week have engulfed nearly 360,000 acres of the county, burning the life out of plants and animals that help make the region a jewel of biological diversity.
Massive blazes also render the land less hospitable for humans by increasing the likelihood of future wildfires, debris flows, erosion and water pollution.
“These fires are a staggering tragedy for both people and nature,” said David Hogan of San Diego, a conservation manager for the Center for Biological Diversity, a national environmental group.
“This may be the last straw for endangered species that have already suffered so much habitat loss to development and overly frequent fire.”
Native chaparral and coastal sage scrub in the overlapping burn zones may not recover in time to prevent the spread of fast-growing, non-native grasses. The areas were home to most of San Diego County's more than 40 species listed as threatened or endangered by the federal government.
In addition, grasslands are more vulnerable to wildfires than healthy coastal sage scrub and chaparral. A carelessly tossed cigarette is more likely to ignite the exotic invading grasses than it would the native chaparral.
“The backcountry is converting to a simpler, more weedy, less beautiful landscape than the California most of us moved into,” said Wayne Spencer of the Conservation Biology Institute in Encinitas.
A similar pattern has played out across the West, with virtually every state in the region having to battle the problem.
In areas such as eastern Oregon and the Rockies, native plants repeatedly burned by wildfires cannot regain a foothold because cheat grass and other invaders quickly move in and dominate the terrain.
“It's widespread and it does seem to be increasing,” said Christopher Dionigi, assistant director of the National Invasive Species Council in Washington, D.C.
Russian thistle Even before the latest inferno began Sunday, drought had taken a toll on many of San Diego County's native plants. The dry conditions killed scores of oak trees and allowed bark beetles to finish off weakened pines.
Contrary to popular thought, Southern California is not a desert. Shrubland, a mix of sage scrub and chaparral, is the native landscape for much of the region between the Pacific shoreline and the foothills of coastal mountains.
For instance, nearly 90 percent of the Cleveland National Forest is shrubland rather than coniferous forest.
California has about 8.6 million acres of chaparral, but that figure is declining rapidly. From 1946 to 1987, 1.5 million acres were lost because of urban expansion, ranching and wildfires.
Likewise, development and agriculture have reduced coastal sage scrub to less than 15 percent of its expanse when California became a state.
Coastal sage and chaparral have adapted to withstand periodic fires of 20 to 60 years apart. In fact, the seeds of several native plants need fire and smoke to prepare them to germinate.
“Chaparral requires roughly 20 years or more to recover from a fire to be able to withstand a repeat fire,” said Jon Keeley, a fire ecologist with the U.S. Geological Survey near Fresno.
“The native vegetation typically doesn't recover once it has been taken over by alien grasses.”
Researchers studying the aftermath of the 2003 Cedar fire said pines and other trees in Rancho Cuyamaca State Park are not returning as quickly as originally anticipated.
Several environmentally important parts of the county have been scarred by the latest fires, but ecologists haven't been able to go into those areas to assess the extent of the damage.
Properties that appear to have sustained damage include sections of Palomar Mountain and the Ramona grasslands, Santa Ysabel Open Space Preserve and Volcan Mountain Preserve.
Last week, officials at the South County wildlife refuge were assessing fire damage and planning to keep invasive grasses from taking over on roughly 4,000 burned acres. Their efforts will include replanting native species and using herbicides to knock out unwanted plants.
Advertisement However, ecologists said, limited resources will make it impossible to apply similar measures to most of the county's charred zones.
About 60,000 acres burned in areas set aside for dozens of species under the Multiple Species Conservation Program, said Thomas Oberbauer, who oversees the county's portion of the program. The plan was created in the late 1990s to preserve open spaces while making room for development.
Scott Morrison, an ecologist with The Nature Conservancy in San Diego, said many of the organization's properties in San Diego County have been ravaged in recent days.
“What these fires remind us is that ... we need to make sure that our natural conservation lands are larger than the largest catastrophic fire we face ... so that some places remain unburned and provide a refuge for species,” Morrison said.

Marine Bioblitz uncovers biodiversity bonanza

Monday, 29 October 2007

Wellington’s Marine Bioblitz has uncovered a biodiversity bonanza, identifying 551 species – including at least four new species during the month-long search.
Marine Bioblitz Co-ordinator Heather Anderson says the Marine Bioblitz – the world’s first – was a tremendous success in revealing the incredible diversity and richness of plant and animal life in Wellington’s marine environment.
“We knew that Wellington was rich in an abundance of marine life, but the variety and number of species found has been really exciting, and demonstrates how little we know about the underwater life that exists right on our doorstep.”
The Bioblitz, conducted in the area off Wellington’s south coast to be announced as the Kupe-Kevin Marine Reserve in January, found four new species:• A many-tentacled tube anemone found by NIWA scientist Malcolm Francis • A tiny red and green nudibranch (sea slug) found by Forest & Bird marine advocate Kirstie Knowles • A bryozoan (a tiny animal that builds a stony skeleton, also known as moss animals or sea mats) found by Kirstie Knowles and NIWA’s Adam Smith• A diatom (a single-celled phytoplankton) found by Margaret Harper of Victoria University.
Dive teams from Island Bay Divers and Dive HQ also found six more potential new species, including a minute “red blob” – the origin of which is so puzzling that the experts are completely baffled about what phylum it might belong to.
These discoveries will now be analysed in more detail by experts to determine whether they are indeed new species previously unknown to science
Another highlight of the Bioblitz was the appearance of two species of whale – an orca and a southern right whale.
Heather Anderson says the Bioblitz brought together scientists, conservationists, divers and the Wellington public and raised public awareness of Wellington’s unique marine biodiversity.
“The Kupe-Kevin Smith Marine Reserve will be New Zealand’s first marine reserve located so close to a major urban centre, and will be the first marine reserve in Cook Strait, which has a diversity of unique marine plants and animals. The marine reserve will play an important role in protecting this rich underwater world.”

Estimating the value of biodiversity

One ground-breaking aspect of the Global Environment Outlook 2007 issued last week is the attempt to estimate the monetary value of biodiversity.
For instance, the value of coral reefs for fisheries and tourism is estimated at US$30 billion per year, and the value of the herbal medicine market at roughly US$43 billion in 2001 figures.
Although such estimates are often attempted at local levels, expanding the effort to a global level significantly inflates the figure, thus enhancing the shock value of the potential damage and giving it a greater sense of priority.
The authors of the Global Environment Outlook are clearly hoping to build on the success in calculating the economic value of travel and tourism as a job creator and foreign exchange earner, which has helped policy-makers create the conditions for generating phenomenal tourism growth in the last few decades.
They believe the same can be done by estimating the value of biodiversity and its value to tourism.
The report says: "Identifying economic values of ecosystem services, together with the notions of intrinsic value and other factors, will assist significantly in future decisions relating to trade-offs in ecosystem management."
Citing one example, the report says that the global net value of coral reefs relating to fisheries, coastal protection, tourism and biodiversity is estimated at US$29.8 billion oer year. It highlights the Caribbean, a popular tourist region, where human activities reportedly threaten nearly two-thirds of coral reefs.
The report also notes that countries are attempting new ways of raising revenues for environmental protection.
For example, it says, the Protected Areas Conservation Trust in Belize receives most of its revenue from an airport tax of about US$3.75, paid by all visitors upon departure, together with a 20% commission on cruise ship passenger fees. The British overseas island territory of Turks and Caicos designates 1% of a 9% hotel tax to support the maintenance and protection of the country's protected areas.
These so-called "green taxes", although opposed by industry interest groups, are putting pressure on the world's major polluters and environment destroyers, the report says.
At the same time, it says, Environmental degradation due to development raises deep ethical questions that go beyond economic cost-benefit ratios.
"The question of justice is perhaps the greatest moral question emerging in relation to environmental change and sustainable development. Growing evidence indicates that the burden of environmental change is falling far from the greatest consumers of environmental resources, who experience the benefits of development," the report says.
"Often, people living in poverty in the developing world, suffer the negative effects of environmental degradation. Furthermore, costs of environmental degradation will be experienced by humankind in future generations. Profound ethical questions are raised when benefits are extracted from the environment by those who do not bear the burden."
Both tourism and its first-cousin, the air transport industry, produce many economic benefits but are criticised for not doing enough on the ecological front.
Tourism is an economic mainstay in many parts of the world, especially island nations such as the Seychelles, as well as the Mediterranean coastal areas.
At the same time, it cites the urban sprawl of Las Vegas, the fastest-growing metropolitan area in the United States _ a reference that may soon be applicable to Singapore and Macau as they seek to develop their gaming industries on the Las Vegas model.
"As the (Las Vegas) gaming and tourism industry blossomed, so has the city's population," the report says.
"Population growth has put a strain on water supplies," it adds. "Satellite imagery of Las Vegas provides a dramatic illustration of the spatial patterns and rates of change resulting from the city's urban sprawl."
Another example is the state of Quintana Roo in Mexico, which is experiencing a significant growth in tourism infrastructure all along the Caribbean coast.
The conversion of mangrove forest into beachfront tourist resorts along the Mayan Riviera, south of Cancu{aac}n, has left the coastlines vulnerable. Playa del Carmen, at 14%, has the fastest growth in tourism infrastructure in Mexico. Threats to the aquifers come from increasing water use, of which 99% is withdrawn from groundwater and wastewater disposal, the report says.