Journal of Environmental Sciences Juniper Publishers

  Juniper Publishers-Open Access Journal of Environmental Sciences & Natural Resources Will Climate Change Cause Hurricanes Like Maria to Become More Common? Authored by Ronald T Richards Abstract Hurricane Maria, a category 4 storm devastated Puerto Rico on 20 September 2018. For most people, the power blackout lasted three or more months. With the electricity, all aspects of modern society such as telephones, Internet, radio stations, newspapers, first responders, food, water, propane, and gasoline became hard to get. The death toll is still being debated and will never be know exactly. When Hurricane Katrina hit New Orleans in 2005 most deaths were due to flooding when the levees failed. In Hurricane Maria more of the deaths are due to the collapse of the health care system. Many climate models predict that climate change will make powerful hurricanes more common, but this has yet to be proven. Keywords:   Hurricane Maria; Puerto Rico; Climate Change Go to Introduction ...

  Juniper Publishers-Open Access Journal of Environmental Sciences & Natural Resources Within and Between-Tree Variation in Growth Ring Width of   Pinus oocarpa   Wood Authored by Edwin Hara Abstract Variation in growth ring width of 25-years-old   Pinus oocarpa   trees planted in central Malawi was investigated. A total of 30 discs were collected from six trees at breast height (1.3m from the ground level), 25%, 50%, 75% and 90% stem height. The estimated mean growth ring width was 5.98±0.15 mm. The boundary between juvenile and mature wood was marked on ring number 8 from the pith. Growth ring width significantly (P<0.001) decreased from pith to bark and significantly (P<0.001) decreased from butt upwards. However, there were no statistical significant (P>0.05) differences in growth ring width in mature wood at different stem heights and radial position. Growth ring width had a significant (P<0.001) linear relationship with early wood width in ...