It seems that my knowledge of old maps is not as good as I believed. I had thought that in the past when there were lands or seas still to be mapped the explorers often created myths and legends by writing 'here be monsters' on the charts of the time. This would warn other adventurers away from these areas as they were full of unknown dangers and remained uncharted. It appears that the term act...

The current scale of deforestation in tropical regions and the large areas of degraded lands now present underscore the urgent need for interventions to restore biodiversity, ecological functioning, and the supply of goods and ecological services previously used by poor rural communities. Traditional timber plantations have supplied some goods but have made only minor contributions to fulfillin...

internationally, one of the most important purposes to establish a national park is to protect a unique ecosystem with all its inclusive biota. therefore, this will facilitate the management and protection of the neighboring lands. unfortunately, this trend was reversed in iranian national parks. during recent decades, the land cover changes in protected areas have led to the decrease of the re...

Due to heterogeneity of lands over ungauged/sparsely gauged watersheds at which the hydrological flows occur, there is a need to upscale the hydrological conservation equations to the scale of the grid areas of the numerical mesh laid out over the watershed which is being modelled. A literature review of the various methods utilized in hydrology for the upscaling of hydrological conservation eq...

Surface discharges of anthropogenic nutrients historically have been the focus of Florida’s waterquality regulations. Groundwater contributions to eutrophication of Florida’s surface waters are a more recent focus. Florida’s naturally oligotrophic springs, streams, and lakes are experiencing significant anthropogenic nutrient contamination resulting from groundwater discharges with elevated nit...

There is substantial concern that microbial and nutrient pollution by cattle on public lands degrades water quality, threatening human and ecological health. Given the importance of clean water on multiple-use landscapes, additional research is required to document and examine potential water quality issues across common resource use activities. During the 2011 grazing-recreation season, we con...

Mr. UDALL of Colorado. Mr. Speaker, today I am introducing a bill to authorize a program to help states, local governments, and private groups protect open space while enabling ranchers and other private landowners to continue to use their lands for agriculture and other traditional uses. The bill, entitled the ‘‘Cooperative Landscape Conservation Act,’’ is based on provisions that were passed ...

Abstract Desertification is one of the fundamental problems that threaten many arid and semi-arid areas. The formulation of the United Nation Convention to Combat Desertification (UNCCD), adopted in Paris, 1994 and ratified in 1996, with the active participation of Egypt, gave emphasis on combating the major threats to sustainability of dry lands. Recently, different models were developed to fo...

0006-3207/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.biocon.2012.05.003 ⇑ Corresponding author. Tel.: +1 406 994 2670; fax E-mail address: [email protected] (N.B. Piekie U.S. National Park Service land managers face a variety of challenges to preserving the biodiversity in their parks. A principle challenge is to minimize the impacts of surrounding land use on park c...