Adelges tsugae also commonly known as the Hemlock Woolly Adelgid (HWA), a bug less than 1.5 mm long and dark in color. They are part of the Adelgidae family, having an asexual and sexual generation life cycle with all generations laying eggs (Havill, Nathan, and Salom 2014, 1). HWA originates from Asia and is accidentally brought to the United State in the 20th century. In the United State, the HWA flourish greatly because there are no natural predators, and the hemlocks in the United State are not
Remote Sensing is a technology that can offer data and information across an extremely broad range of topics, making it an invaluable tool to researchers, scientists, and many people across the world today. One such invaluable use of remote sensing is in the application of forestry. In the past, scientists used to collect data on the ground from a relatively small section of a forest, and assume that their data would be an accurate representation of the forest as a whole. Today, studying forests
PINE TREES OF PENNSYLVANIA Pennsylvania is home to a wide variety of of evergreen tree species. Some of which include: e_hemlock_cones_full http://www.bio.brandeis.edu/ Eastern Hemlock (Tsuga canadensis) The Eastern Hemlock is often used for construction timber. The Eastern Hemlock is the offical state tree of Pennsylvania and is often found in cool moist habitats. This evergreen produces cones 3/4" long that are egg-shaped and hanging singly from the tips of twigs. Under each small section of
The 1992 earth summit agreed on the concept of sustainable development as the base standing on the three pillars of economic viability, environmental sustainability, and social equity. However, the pillar of economic has always been stronger compared to the other two pillars. The emerging discipline of environmental economics helps to design a much better base by giving equal importance to all the three pillars. The subject of environmental economics seek to capture the essence of environment and
A REPORT ON WASHINGTON STATE The State of Washington is located in the far northwest corner of the United States. It has 66,582 square miles between the Pacific Ocean on the west and the Idaho boarder to the east. Washington borders Canada on the north and Oregon on the south along the Columbia River. Washington is the 20th largest state and has very different western and eastern natural environments, which are divided by the Cascade Range. It is home to 6 million residents (2001 census estimate)
Native Dye Plants of the United States The first to use native dye plants in the United States were the Native Americans. Their culture was totally dependent on what the land produced. This is reflected in the wealth of information Native Americans possessed about useful plants, from medicinal to ceremonial and dye plants. This is reflected in the types of houses they built and the names of places (often after the plants that grew there). Early European colonists foolishly ignored the wisdom of