Characteristics of a bottomland hardwood forest under greentree reservoir management in East Central Arkansas

Greentree réservoirs sont une option viable pour la création de l'habitat et la chasse des possibilités de migration de la sauvagine. Malheureusement, l'inondation annuelle prolongés souvent associés à la gestion des réservoirs de Greentree peut être très préjudiciable à la plupart des espèces d'arbres souhaitable dans ces stands. Au cours de l'été 2004, un total de 327 plot centers ont été créés dans un réservoir de Greentree en vertu d'un régime annuel des inondations. À chaque parcelle center, une parcelle de conception imbriqué a été utilisé pour établir une 1/5-acre overstory parcelle, une parcelle 1/40-acre midstory, 1/100-acre et une sous-intrigue. Notre objectif était de caractériser la composition de multiplication végétative et l'abondance des bas-fonds dans un stand de bois qui avait été dans le cadre d'un régime d'inondation annuelle de plus de 50 ans. Les résultats indiquent que overcup chêne est dominant dans les trois couches verticales tandis que le plus souhaitable saule chêne commun est que dans le overstory.

Tips to Keep Your Attic Cool

Don't Let Your Roof Take the Heat

By Marc Richmond-Powers, City of Austin Green Building Program
It's a hot and humid Austin summer day. You head for the indoors and some relief from your trusty air conditioning (A/C) system. Three hours later, you're slightly cooler, but you're wondering why your A/C unit hasn't shut off yet. Here's why: all day long, solar radiation has been heating up your home through the windows, walls, doors and especially the roof. Your attic temperature can easily reach over 140 degrees. That heat up there is working its way through your meager attic insulation into your home and through the A/C ductwork, located in your attic, into your cooling system. Your A/C system has to fight that added heat to change all that hot air in your home into cool air.

You can install solar screens for the windows, porches around the house for shade, and plant trees around the home, but what do you do about the roof which accounts for a third of all the heat build-up of your house?

Here are a few options:
Ventilate your attic with ridge and soffit vents. Vents are louvers, grills, or screen materials which allow passage or air through them. They are typically installed along the top peak (ridge) of your roof, at the top of the side wall (gable), and on the underside of your roof overhang (soffit). Ventilation moves air through your attic by force of wind or by heat rising through natural convection. This leaves cooler air sitting on top of the insulation on the attic floor. Ventilation also has the ability to remove humidity which has built up in your attic and which reduces the effectiveness of your insulation. It is often best to hire a contractor to install these.

Insulate your attic floor to R-30. R-30 is roughly a10 inch thick layer of insulation material above your ceiling. This is a job for any handy homeowner or it could be handed over to a contractor. When installing the insulation, be careful not to block your vents.

Install a radiant barrier between your roof and your attic insulation. A radiant barrier is an aluminum foil material which prevents 95 percent of the heat that radiates from your roof from reaching the insulation on your attic floor. It comes in a roll and is stapled to the underside of your roof rafters. Radiant barriers are sold in most building material supply centers and can be easily installed by a homeowner. This system can save you up to eight percent on your summer cooling bills.

Two Timber Firms Pretending To Be 'Green,' Groups Allege

Two of the nation's largest timber companies, Weyerhaeuser and Plum Creek Timber, have polished their public images for years by participating in a program that certifies that their logging is environmentally friendly.
But in separate challenges this month from the far corners of the United States, environmental groups in Washington state and in Maine are accusing Weyerhaeuser Co. and Plum Creek Timber Co. of using the forest industry's green-labeling program as a cover while they log in ways that harm endangered spotted owls in Washington and violate forestry laws in Maine.

The Seattle Audubon Society and the Natural Resources Council of Maine have demanded in documents sent to the Sustainable Forestry Board that it revoke certification for the companies until they comply with standards they have pledged to uphold.
Both companies say the demands are unjustified and show ignorance of relevant facts.
The requests mark the first time that mainstream environmental groups have publicly attempted to turn the forest industry's green certification process against big timber companies by insisting that they be suspended from the program, the Sustainable Forestry Initiative, said William H. Banzhaf, president of the forestry board, which oversees certification.
Green labeling is a major marketing tool in the timber industry. It allows companies to reach a bigger marketplace while assuring increasingly sophisticated consumers that their purchases are not harming the environment.
As worry about global warming increases, green building codes are becoming politically fashionable. They have recently been adopted for private construction in the District, Montgomery County and Pasadena, Calif. Eighteen states and 11 federal agencies use such codes for their own buildings. And green codes often give credit to builders who use timber certified to have been logged in a sustainable way.
The timber industry's main lobby, the American Forest & Paper Association, developed the Sustainable Forest Initiative in 1994. That was a year after the Forest Stewardship Council, a group of environmentalists, forestry experts, sociologists and indigenous groups, created another certification system that is often described as far less friendly to the interests of big timber companies.
The competing certification regimes are usually referred to by initialisms -- SFI and FSC -- that can be easily confused. Some environmentalists say this is an intentional industry effort to muddy the green-labeling waters and confuse the public. Timber companies dispute that assertion.
Unlike the industry-created SFI program, FSC rules allow virtually no cutting of old-growth forests, nor do they allow operators to log off a diverse stand of trees and replace it with a plantation forest dominated by a single species, which is often done to enhance the commercial value of forestland.
Home Depot, Ikea and Williams-Sonoma are among the major retailers that have announced their preference for FSC-certified lumber or paper. The U.S. Green Building Council, which oversees green standards for construction in the District and Montgomery County, among other places, credits only builders that use FSC lumber. But other retailers, such as OfficeMax, have preferences that do not distinguish between certification systems.
The Seattle Audubon Society and the Natural Resources Council of Maine argue that the Sustainable Forest Initiative could lose all credibility if its board does not suspend Weyerhaeuser and Plum Creek until they clean up their forestry practices.

Forest environmental services

Forests are commonly known for the goods that they provide - timber, fuelwood, fodder and other non-timber forest products. Less commonly known is the fact that forests also provide a number of crucial ecosystem services, for example, their role in sequestering carbon from the atmosphere, protecting upstream watersheds, conserving biodiversity and gene-pools for future generations and in providing landscape beauty. Forest environmental services also include regulation of the water cycle and climate, soil formation, nutrient recycling, and plant pollination. While the ever-increasing demand for forest goods is widely recognized, the increased demand and need for forest services is often not as well known.

One reason for this is the failure of markets, and society in general, to adequately value these services in economic or financial terms. Consequently, forest environmental services are rarely accounted for in national Gross Domestic Product (GDP) statistics and few well-developed markets exist for them. However, today there is growing awareness of the need to adequately acknowledge and measure the value of these services, so that decisions involving forest land use change are based on the true worth of forests, rather than on the immediate tangible goods that they provide. There is also an urgent need to develop appropriate mechanisms, market-based or otherwise, that can generate income flows to communities or institutions protecting forests and providing these services, so that there is a direct incentive for them to continue doing so.

Forests and Water Linkages
Water in theory is the most renewable of resources. Yet, careless use, population growth, and increasing demand all mean that provision of adequate safe supplies of water is now a major source of concern, expense, and even international tension. The links between forests and watersheds are complicated and vary with geography, weather patterns, and management. Forests in catchments generally result in cleaner water downstream, thus significantly reducing the costs of purification (to what extent depends on the level and type of contamination). In addition, particular forests such as tropical moist cloud forests appear to increase flow into catchments as well as ameliorate local flooding.

With water shortages increasing in many parts of the world, the importance of this link is being rapidly realized today. Twenty-eight per cent of the world's forests are located in mountains and these forests are the source of some 60-80% of the world's fresh water resources. They are also natural barriers for landslides, torrents, and floods. Tropical Montane Cloud Forests (TMCFs), which have unique hydrological values and high rates of species endemism, are today being lost faster than any other major forest ecosystem. However, nearly 30% of the world's major watersheds have lost more than three-quarters of their original forest cover.

Recognizing this problem, some countries have already started protecting or replanting trees on degraded hill slopes to safeguard their water supplies. Generating more knowledge on this forest environmental service, and developing appropriate payment or compensation mechanisms between upstream watershed service providers and the downstream beneficiaries, will be a key challenge for the forestry sector in the coming years.

Festivals in India

India, the land of festivals and fairs. It is a land of festivity - religious as well as folkloristic. Whether you go to the East or the West, North or the South you would be able to enjoy every month a festival or a fair. Every day of the year there is a festival celebrated in some part of the country. Be it cultural or religious, it gives everyone an opportunity to enjoy and join the festivity. More... http://www.pagesofindia.com

Green Tree Ant

Some Special Trees of Green Lake

Green Lake is Seattle's most heavily visited park. In its fame as a local natural attraction it may not be as dominant as New York City's Central Park, but only because in comparison Seattle offers such an enviable abundance of parkland and greenery. Green Lake's trees are a most impressive collection, and I recently wrote a book about them because so many people love the place.
An acquaintance of mine who has utterly no knowledge of trees besides what we all possess in common, was moved to expressions of delight when the silent songs and mute histories of Green Lake trees were revealed by my booming voice, as, like an uncorked bottle, I let forth on the subject so dear to me. Since people respond to love, here is some for you --three Green Lake trees that stir my heart.