Despite being targeted as a conservation flagship species for several decades, the tiger (Panthera tigris) grows ever more imperiled. Debate exists as to where tiger conservation should focus: on protected nature reserves or larger landscapes. We developed a landscape scale, density-based model to assess whether reasonably effective management of current reserves is adequate to ensure the survi...

The successful operation of interconnected power systems requires the balance of electricity generation and consumption. This is performed by frequency control that comprises three level control processes known as primary, secondary, and tertiary control. First, primary control stabilizes frequency within some seconds. Next, secondary control keeps the frequency close to its nominal values and ...

The body condition score (BCS) system is a subjective scoring method of evaluating the energy reserves of dairy animals to provide better understanding of biological relationships between body fat, milk production and reproduction. This method helps in adopting the optimum management practices to derive maximum production and maintain optimum health of the livestock. In this study, a new BCS sy...

Marine reserves, areas closed to all forms of fishing, continue to be advocated and implemented to supplement fisheries and conserve populations. However, although the reproductive potential of important fishery species can dramatically increase inside reserves, the extent to which larval offspring are exported and the relative contribution of reserves to recruitment in fished and protected pop...

We examined whether nitrogen (N) and carbohydrates reserves allow Veratrum album, an alpine forb, to start spring growth earlier than the neighbouring vegetation and to survive unpredictable disturbances resulting in loss of above-ground biomass. * Seasonal dynamics of plant reserves, soil N availability and vegetation growth were monitored. Veratrum album shoots were experimentally removed whe...

The existence of mineralization, mining and deposits non-ferrous precious other metals (Pb-Zn, Ag; Cu, Au, as well B-Li, Mg, Sb, etc.) in the territory Serbia is conditioned by structural-geological-metallogenetic structure processes formation mineral raw materials a certain period geohistorical development. Mining activity Serbia, i.e. extraction metal ores, goes back thousands years, which re...

Nature reserves are established to protect ecosystems and rare flora and fauna. However, with the rapid development of the social economy, many nature reserves are facing enormous pressures from human activities. The assessment of the sustainability of nature reserves is a fundamental task for the planning and management of such areas. In this study, the sustainability of China’s 319 national n...

Recently, a dramatic accumulation of foreign exchange reserves has been widely observed among developing countries. The purpose of this paper is to explore what macroeconomic impacts accumulated foreign reserves have in developing countries. In the first part, we analyze a simple open economy model where increased foreign reserves reduce costs of liquidity risk. Given the amount of foreign rese...