Volume XIX |

A model of CBT networks and organizations: an African perspective and beyond

Abstract: Community-based tourism networks (CBT-N) are important both locally and globally. However, few studies are dedicated to CBT-N. This paper fills this gap and includes an examination of two CBT networks/associations (CBT-N) to validate their role and service in CBT. The two African CBT-Ns examined in this paper show the real need for partnerships and collaborations with various entities and the multiple services that the CBT-N offers for training, funding, marketing, capacity building and empowerment. This paper reviews related literature and the African CBT-N as a case study and proposes a CBT-N model. The model, while not claiming to be all-inclusive, attempts to illustrate the variety of possible collaborators within CBT-N and the wide range of services and activities that the various entities, in primis the CBT-N itself, can propose, harness and manage.

Volume XVIII |

Professor Constantin Savin Life and Activity

Abstract: In Memoriam

Volume XVIII |

Climate parameters relevant for avalanche triggering in the Făgăraș Mountains (Southern Carpathians)

Abstract: The climate conditions may contribute significantly to the generation of several hazards in mountain areas, such landslides, wildfires, flash floods and avalanches. This study examines the variation of the main meteorological parameters with impact on avalanche triggering conditions at Bâlea-Lac Meteorological Station. At the best of our knowledge, this is the first overview of the basic climate parameters which are potentially avalanche triggers in the Făgăraș Mountains (Southern Carpathians). The study is based on data from only one weather station (Bâlea-Lac) from the period 1979-2017, assuming it is consistently relevant from climatic point of view for avalanche occurrence in the area. The results demonstrate that the theoretical circumstances for avalanche triggering (e.g. snow pack, fresh snow or wind) can be captured. This paper briefly describes the nivologic monitoring system run by the National Meteorological Administration and emphasises its utility for avalanche forecasting and alerts.

Volume XVIII |

Tracing the development of weather radar technology in Romania and worldwide

Abstract: Almost 90 years from the radar invention, the radar technology has evolved enormously and today it presents itself as an instrument of great importance in various research areas (meteorology, aviation, astronomy, air-ecology etc.). The main objective of the article is to identify the periods of development at the global level and also in Romania, as well as to identify the technology of most operational weather radars today. The article is based on publications from international journals and scientific books, covering the period of 1930-2018. The overview presentation demonstrates the reasons today’s weather radar is a powerful tool for studies concerning the atmospheric precipitations prediction, wind speed and direction, rainfall risk assessment and implementation of weather forecasts. Knowing the technological development is needed for the construction of the new generation radar and for exceeding the actual limits with regard to the accuracy of the radar data and the limits of observation. The purpose of this article is to summarize the evolution of the weather radar, with emphasis on the first experiments carried out during the analogue and digital period.

Volume XVIII |

In search of the last remaining giants. Modelling the conservation potential of century old trees within the Continental and Steppic Biogeographical Regions of Romania

Abstract: The present paper aims to model the potential for conservation of some very large specimens of either indigenous or human introduced tree species located within the Continental and Steppic Biogeographical Regions of Romania, areas characterized by considerable natural diversity. Centuries of human intervention have resulted in the major replacement of the natural vegetation with semi natural forests in the highlands, pastures and permanent crops at the hills and arable land in the lower areas. The once pristine landscapes present numerous remains in the form of old trees, while other exotic introduced species are common. In order to assess their conservation potential, we applied an encyclopedically approach centered on numerous field observations, measurements, scientific literature research, historical maps analyses and discussions with locals. The results certify the existence of different species characterized by a medium and high potential for conservation. Some of them are the subject of numerous researches and possess favorable conservation status while many are poorly or virtually unstudied and not protected. Such findings are usable in complex domains, mainly biodiversity conservation, durable ecosystem management and ecotourism.