Recently in Ecosystems Category

American Bird watchers coast to coast are invited to take part in the 13th annual Great Backyard Bird Count, Friday, February 12, through Monday, February 15, 2010.  Participants in the free event will join tens of thousands of volunteers counting birds in their own backyards, local parks or wildlife refuges. 

Each checklist submitted by these "citizen scientists" helps researchers at the Cornell Lab of Ornithology,the National Audubon Society , and Bird Studies Canada learn more about how the birds are doing--and how to protect them. Last year, participants turned in more than 93,600 checklists online, creating the continent's largest instantaneous snapshot of bird populations ever recorded. 

"Taking part in the Great Backyard Bird Count is a great way to get outside with family and friends, have fun, and help birds--all at the same time," said Audubon Education Vice President, Judy Braus. "Even if you can only identify a few species you can provide important information that enables scientists to learn more about how the environment is changing and how that affects our conservation priorities."

Anyone can take part in the Great Backyard Bird Count,
from novice bird watchers to experts.

Participants count birds for as little as 15 minutes (or as long as they wish) on one or more days of the event and report their sightings online at www.birdcount.org. One 2009 participant said, "Thank you for the opportunity to participate in citizen science. I have had my eyes opened to a whole new interest and I love it!"

"The GBBC is a perfect first step towards the sort of intensive monitoring needed to discover how birds are responding to environmental change," said Janis Dickinson, the director of Citizen Science at the Cornell Lab.

Winter is such a vulnerable period for birds, so winter bird distributions are likely to be very sensitive to change.

There is only one way--citizen science--to gather data on private lands where people live and GBBC has been doing this across the continent for many years.

GBBC has enormous potential both as an early warning system and in capturing and engaging people in more intensive sampling of birds across the landscape."

Bird populations are always shifting and changing.

For example, 2009 GBBC data highlighted a huge southern invasion of Pine Siskins across much of the eastern United States. Participants counted 279,469 Pine Siskins on 18,528 checklists, as compared to the previous high of 38,977 birds on 4,069 checklists in 2005. Failure of seed crops farther north caused the siskins to move south to find their favorite food.

Bird Count Website

On the www.birdcount.org website, participants can explore real-time maps and charts that show what others are reporting during the count. The site has tips to help identify birds and special materials for educators. Participants may also enter the GBBC photo contest by uploading images taken during the count. Many images will be featured in the GBBC website's photo gallery. All participants are entered in a drawing for prizes that include bird feeders, binoculars, books, CDs, and many other great birding products.

Canadian Bird Studies Birdcount

In 2010, Bird Studies Canada (BSC) joins the GBBC as the program's Canadian partner. "Bird Studies Canada is delighted to be the Canadian partner for this extremely valuable program," said George Finney, President of BSC. "Participating in the GBBC is an excellent way for Canadians to reconnect with their love of nature and birds."

For more information about the GBBC, visit the website at www.birdcount.org.

Contact the Cornell Lab of Ornithology at (800) 843-2473, gbbc@cornell.edu,

Audubon at (202) 861-2242 ext 3050, citizenscience@audubon.org.

In Canada, participants may contact Bird Studies Canada at 1- (888)- 448-2473 ext. 134 or gbbc@birdscanada.org.  

The Great Backyard Bird Count is made possible, in part, by support from Wild Birds Unlimited.  

Google's philanthropic arm, Google.org, recently unveiled new software that can actually track and monitor global deforestation. If the software becomes more widely implemented, it could serve as a useful tool in helping to cut carbon emissions and combat climate change.

Google.org worked with Greg Asner of the Carnegie Institution for Science and Carlos Souza of Imazon to develop the deforestation program. To evaluate deforestation in a certain area of the world, the software relies on past, present and future models of satellite image data. 

Handle computation in the cloud
What if we could offer scientists and tropical nations access to a high-performance satellite imagery-processing engine running online, in the "Google cloud"?

And what if we could gather together all of the earth's raw satellite imagery data -- petabytes of historical, present and future data -- and make it easily available on this platform?

Google decided to find out, by working with Greg and Carlos to re-implement their software online, on top of a prototype platform we've built that gives them easy access to terabytes of satellite imagery and thousands of computers in our data centers.

By processing a decades  of historical images, it is able to extract scientific information on how the size and shape of tree cover has changed over the years. Google hopes that by arming scientists and forest managers with this valuable data, they can better protect the world's forests.

Start with satellite imagery
Satellite imagery data can provide the foundation for measurement and monitoring of the world's forests. For example, in Google Earth today, you can fly to Rondonia, Brazil and easily observe the advancement of deforestation over time, from 1975 to 2001:

Restoring devastated rainforest is a noble goal...but is it possible? 

Yes, says ZERI founder, Gunter Pauli.  Their organization turned waste into a productive, living, sustainable community.  It's a demonstration of natural systems-based environmental and economic development.

The Las Gaviotas reforestation project is not only about planting trees for climate stabilization; it is, primarily, about catalyzing a development program that will pave the way for creating a sustainable future for our children where society is able to provide for the basic needs of all in terms of water, food, health care, shelter, energy, jobs and education with local resources. Las Gaviotas is poised to do nothing less than reshape the face of sustainable development and, consequently, the world.

Aerial view of the 8,000 hectares, replanted with Caribbean Pine.

Imagine miles and miles of desolate savannah in Eastern Colombia, without a tree or bird or child in sight, a veritable no-man's land. For Paolo Lugari this was the perfect place to implement a vision: if a sustainable community could be created in such adverse environmental, social and political conditions, it could be done anywhere on the planet. Las Gaviotas has done just that, and much more.

In 1992, in conjunction with the Kyoto Protocol and the Japanese government, the Environmental Research Center at Las Gaviotas began substantiating the concept of carbon sinks to sequester carbon dioxide and stabilize the climate. Based on the cash generated by its renewable energy project, complemented with funding secured through the Japanese government, Las Gaviotas, founded and directed by Paolo Lugari, planted 8,000 HA of Caribbean pine trees in a savannah that had been unproductive for centuries. It was considered impossible to plant trees in such acidic, inhospitable soil (pH 4) but thanks to the innovative use of mycorrhizal fungi which acts as the saliva for the tree, the forestation was successful. More than just successful, this initiative to initiate economic activities and to validate carbon sinks unleashed a chain reaction of positive effects that surprised even the initiators of the program...

Today, more than a decade later, the forestation of 8,000 HA has resulted in 10 percent more precipitation (some 110,000 m³ per day), converting Las Gaviotas into a net supplier of drinking water, a crystalline water of superior quality. With the cost of drinking water exceeding the cost of petroleum, Las Gaviotas demonstrated that reforestation allows us to address one of the most critical issues the world is facing: access to natural potable water!

For a case study, visit the article "The Renaissance of the Rainforest" by Gunter Pauli.

New Science Estimates Carbon Storage Potential of U.S. Lands
Nation's Forests and Soils Store Equivalent of 50 Years of U.S. CO2 Emissions

The first phase of a groundbreaking national assessment estimates that U.S. forests and soils could remove additional quantities of carbon dioxide (CO2) from the atmosphere as a means to mitigate climate change.

The lower 48 states in the U.S. hypothetically have the potential to store an additional 3-7 billion metric tons of carbon in forests, if agricultural lands were to be used for planting forests.

This potential is equivalent to 2 to 4 years of America's current CO2 emissions from burning fossil fuels.

"Carbon pollution is putting our world--and our way of life--in peril," said Secretary of the Interior Ken Salazar in a keynote speech at the global conference on climate change in Copenhagen, Denmark.  "By restoring ecosystems and protecting certain areas from development, the U.S. can store more carbon in ways that enhance our stewardship of land and natural resources while reducing our contribution to global warming."

U.S. Geological Survey scientists also found that the conterminous U.S. presently stores 73 billion metric tons of carbon in soils and 17 billion metric tons in forests.

This is equivalent to more than 50 years of America's current CO2 emissions from burning fossil fuels. This shows the need to protect existing carbon stores to prevent additional warming and future harm to ecosystems.

Habitat Carbon Absorption = 30% of Fuel Emissions

America's forests and soils are currently insufficient in soaking up the nation's accelerating pace of emissions. They currently absorb about 30 percent (0.5 billion metric tons of carbon) of the nation's fossil fuel emissions per year (1.6 billion metric tons of carbon). Enhancing the carbon storage capacity of America's and the world's ecosystems is an important tool to reduce carbon emissions and help ecosystems adapt to changing climate conditions.

Biologic carbon sequestration

"The tools the USGS is developing--and the technologies behind those tools--will be of great use to communities around the world that are making management decisions on carbon storage," said USGS Director Marcia McNutt. "The USGS is conducting a national assessment of biologic carbon sequestration, as well as an assessment of ecosystem carbon and greenhouse gas fluxes, which will help determine how we can reduce atmospheric CO2 levels while preserving other ecological functions."

To determine how much more carbon could be stored in forests and soils, USGS scientists analyzed maps that represent historical vegetation cover before human alterations, as well as maps of vegetation that might occur if there were no natural disturbances, such as fires, pests and drought. These maps were compared to maps of current vegetation and carbon storage.

The next phase of this work will assess the additional amount of carbon stored in Alaska's ecosystems, including its soils and forests. The USGS plans to collaborate with U.S. Department of Agriculture and other agencies to examine potential carbon storage in soils.

The USGS is conducting research on a number of other fronts related to carbon sequestration. These efforts include evaluating the potential for storing carbon dioxide in geologic formations below the Earth's surface, potential release of greenhouse gases from Arctic soils and permafrost, and mapping the distribution of rocks suitable for potential mineral sequestration efforts.

For more information about this assessment, visit http://pubs.usgs.gov/ofr/2009/1283.

Pacific Northwest temperate rainforests can attain the greatest biomass per acre of any ecosystem on earth.  Wow!  Did you know that?  I didn't.  Temperate and boreal forests are very extensive and currently serve as net carbon sinks.  And that's a good thing --  a very good thing!

Carbon storage by forests is complementary with other important ecosystem services provided by forests.

• Clean Water
• Fish and wildlife habitat
• Soil conservation
• Economic diversification
• Capture, storage and release of water, nutrients and sediment
• Air filtration
• Mediation of urban heat islands
  

Princeton Biology and Public Policy Professor Lee Silver describes a vision (admittedly "sci-fi" for now) in which biotechnology has taken over the natural world--but in a responsible, sustainable way. He looks forward a potential distant future where, for example, trees are engineered to produce fuel.

"If you can imagine something," he says, "it's probably going to be done."

The bad boy of biotech has a vision... "we want to have renewable fuel... that doesn't affect the atmosphere. We want to maintain nature and forests...we love them. And we want to do it sustainably. Craig Venter wants to create organisms that are trees that produce diesel fuel...or some other source of energy. Sunlight is converted directly into fuel. That's what plants do...convert sunlight into energy...." (Craig Venter Received an EMC Information Leadership Award)

The forest provides comfort to us, the fuel is carbon neutral and the fuel is then used to create hydrogen fuel or some clean fuel. It's all dependent on manipulating the earth... like we've been doing for hundreds or thousands of years.

That's the future science fiction visionaries are seeing... biotech is the pathway through the forests of tomorrow.

Hmmmm....

A study of the magicians of the soil is an endless endeavor! Paul Stamets makes it a bit easier to learn about mushrooms with this TED talk. Mushrooms are both a citizen of the micro world of soil, but they are the manufacturers of the very soil in which they live. What a sentient approach to sustainability.

A recent study at Oregon State University has shown that native bumble bee species have consistently high pollination and seed production levels in red clover.

The bumble bee pollination findings offer promise for the use of bumble bee crop pollinators as an alternative to European honey bees, whose populations have recently declined in many areas of the United States.

Red clover, which is grown for forage and as a rotation crop to improve soil, is raised for seed in western Oregon's Willamette Valley. It will not produce seed without pollination, so growers typically place two to five European honey bee hives on each hectare. 

Search for Alternative Pollinators

Bee diseases, mites, and colony collapse disorder have recently limited availability and resulted in higher costs for hive rentals. Given these changes, an alternative pollinator for red clover seed crops is needed.

Worldwide there are over 200 species of bumble bees; some of whom are known to pollinate red clover. While commercially reared bumble bee species are available to growers elsewhere, they are considered exotic species in Oregon and cannot be introduced into the state. This leaves Oregon growers dependent on naturally occurring populations of bumble bees as pollinators. However, there is currently no information on the pollination efficiency of native bumble bee species.

Scientific Evaluation of Blooms and Seed Set

Through funding from the Clover Commission, scientists at Oregon State University investigated native bumble bees in commercial fields of red clover seed crops in the Polk County region of the Willamette Valley. Prior to bloom, researchers covered plants with mesh-screened cages. European honey bee hives were placed in some cages and nests of B. vosnesenskii, a native Oregon bumble bee,in others. Some cages were also left vacant. After bloom, seed yield and seed set were compared amongst the different cages. Seed set was also evaluated in four different fields without cages to assess the efficiency of existing bee pollinators. In addition to analyzing seed set, researchers assessed the diversity and abundance of native bumble bees through visual observations of foragers on red clover flowers and through trapping bumble bees in blue vane traps. 

Pollination Differences between Bumble Bees and Honey Bees

While there were no differences in seed yield or average seed set in cages with bumble bees compared to honey bees, the study revealed:

• Variability across cages was lower with bumble bees indicating that bumble bee pollination is more uniform than pollination by European honey bees.
  
• The abundance of bumble bee peaked during mid-to-late bloom.
  
• They recorded six species of bumble bees gathering pollen from red clover flowers. Of these, more than 92% consisted of B. vosnesenskii, indicating that it is the key pollinator in Oregon.
  
• 25 more species of native solitary bees, belonging to 12 genera and five families, were collected in the bee traps.

Research Findings

The study has not only documented a great diversity of native bees in synchrony with red clover bloom, but it has also found that seed set was uniform and high across four fields. Under current pollinator regimes, researchers believe red clover seed production is close to its maximum in Oregon.

Solutions for Pollination

"To sustain these high yields in Oregon, we must

• Conserve the habitat of bees,
  
• Use pesticides judiciously and
  
• Provide floral resources prior to red clover bloom

Oregon State University entomologist Sujaya Rao, one of the researchers on the study, concluded,  "Globally, where red clover seed is produced, similar studies are needed. If seed set is found to be well below the maximum, appropriate alternative options such as augmentation with commercial bumble bees could be considered."

Research is ongoing at Oregon State University to determine whether high yields can be achieved by native pollinators alone. If so, European honey bee hive rentals would not be required, and this could lead to more economic red clover seed production in Oregon.

The Crop Science Society of America (CSSA), founded in 1955, is an international scientific society comprised of 6,000+ members with its headquarters in Madison, WI. Members advance the discipline of crop science by acquiring and disseminating information about crop breeding and genetics; crop physiology; crop ecology, management, and quality; seed physiology, production, and technology; turfgrass science; forage and grazinglands; genomics, molecular genetics, and biotechnology; and biomedical and enhanced plants.

SOURCE:  ©2009 Newswise, Inc

Protection of our natural resources in becoming increasingly dependent on careful monitoring, data collection and interpretation of these observations of how our world works.  The AmeriFlux network provides scientific development of methods as well as gathering and analysis of ecosystem data. These scientists quantify and advance understanding of processes regulating carbon assimilation, respiration, and storage, and linkages between carbon, water, energy and nitrogen through measurements and modeling.

The AmeriFlux network includes more than 120 independently funded sites operating across North, Central, and South America. AmeriFlux sites include tundra, grassland, agricultural crops, tropical forests and temperate coniferous and deciduous forests.

Nations of the world face challenges in developing sound policies and directions for addressing global change. The scientific community has the responsibility to provide the scientific basis for those policies.

This includes developing the understanding of the influence of land, ocean and atmospheric processes in climate change.

The goal of AmeriFlux is to develop a coordinated research network of long-term flux sites in the Americas for quantifying and understanding the role of the terrestrial biosphere in global climate change. Specifically, Ameriflux aims to provide reliable estimates of carbon storage, carbon dioxide and water vapor exchange, and improve our description and understanding of variation, and its causes at relevant temporal and spatial scales. We expect to provide the quantitative information to adequately predict large-scale long-term responses to changing environmental conditions.

This will be accomplished using micrometeorological and biological measurements at the intensive flux sites coupled with extensive measurements (e.g. surveys and remote sensing) and modeling.

The AmeriFlux network was established in 1996. The network provides continuous observations of ecosystem level exchanges of CO₂, water, energy and momentum spanning diurnal, synoptic, seasonal, and interannual time scales and is currently composed of sites from North America, Central America, and South America.

AmeriFlux is part of a "network of regional networks" (FLUXNET) which coordinates regional and global analysis of observations from micrometeorological tower sites. Learn more about FLUXNET and other regional carbon flux networks.

The network role is to address the scientific uncertainties associated with global change. AmeriFlux' focus is to address these scientific questions:

1. What are the magnitudes of carbon storage and the exchanges of energy, CO₂ and water vapor in terrestrial systems? What is the spatial and temporal variability?


2. How is this variability influenced by vegetation type, phenology, changes in land use, management, and disturbance history, and what is the relative effect of these factors?


3. What is the causal link between climate and the exchanges of energy, CO₂ and water vapor for major vegetation types, and how does seasonal and inter-annual climate variability and anomalies influence fluxes?


4. What is the spatial and temporal variation of boundary layer CO₂ concentrations, and how does this vary with topography, climatic zone and vegetation?

Recommendations for enhanced instrumentation at research sites

• Aspirated temperature. The AmeriFlux network needs to ensure temperature measurements are unbiased and stable with time
• Net Radiation. All sites should consistently use aspirators and account for any wind-speed corrections in their radiation measurements.
• Photosynthetic Photon Flux Density (PPFD) and incident radiation.
• Sonic Anemometry. There is no model of sonic anemometer-thermometers (SATs) that is ideal for all situations. Model type should be chosen by the site PI to best suit the site conditions and overall research questions.Scalar density measurements for CO2 and H2O. Precise scalar concentrations are needed to quantify the high frequency turbulent fluctuations of scalar density in making flux measurementsProfile systems. Because any 30-min scalar flux is the sum of both turbulent exchange and the vertical integrated rate of change of the scalar, it is important to have a CO2 profile system particularly at sites that have a developed canopy > 1 m in height.
• Soil respiration. Automated continuous measurements of soil respiration, and accompanying spatial representation with portable chambers, plus soil temperature and moisture profiles should be added to Tier 1 sites, and possibly some Tier 2 sites. We have found that automated chamber measurements of soil respiration (hourly)Water budget components. One key AmeriFlux objective is to explain the processes that control the fluxes of water vapor, and to determine how water vapor flux temporally and spatially affect the exchange of carbon (AmeriFlux Science Plan).
• Reporting calibration records (metadata) and data quality flags (for each 30-min period) in a centralized data repository (i.e., CDIAC) should also be explored to enhance overall network data quality