Search results for "Succession"
showing 10 items of 401 documents
Tree species influences diversity of ground-dwelling insects in afforested fields
2015
Abstract Impaired natural ecosystems, such as agricultural lands, are restored toward original or other target stage. Because the long agricultural history has changed the physical, chemical and biological features of the soil, afforested fields can harbor novel species assemblages and interactions. Our overall aim was to quantify the diversity of ground beetles and ants in early successional afforested fields. In a large scale field experiment, we compared plots that had been afforested 25 years ago by planting monocultures of birch, pine or spruce trees. A total of 4080 carabid individuals representing 41 species, and 131,933 ant individuals representing 15 species were recorded. Both the…
Dynamics of soil organic matter pools after agricultural abandonment
2014
Changes of land use from croplands to natural vegetation usually increase Carbon (C) stocks in soil. However, the contribution of old and new C to various pools still is not clearly analyzed.We measured the 13C signature of soil organic carbon (SOC) pools after vegetation change from vineyard (C3) to grassland (C4) under Mediterranean climate to assess the changes of old and new C in total SOC, microbial biomass (MB), dissolved organic C (DOC), and CO2 efflux from soil. Development of the perennial grass Hyparrhenia hirta (C4) on vineyard abandoned for 15 or 35 years ago increased C stocks for 13% and 16%, respectively (in the upper 15 cm). This increase was linked to the incorporation of n…
Nurturing the Interpreneur
2007
Few topics in the family business literature have been studied more than management and ownership succession. In today’s competitive global economy, businesses find that innovation, growth and other entrepreneurial behaviors are necessary to survive and prosper. Ernesto Poza (1988) proposed a model for developing entrepreneurial orientations and actions in family business successors, labeling those successors interpreneurs. This study reports the results of interviews with five second-generation company owners and determines how well their experiences match the precepts of Poza’s model. Analyses find that the CEOs behaved entrepreneurially post-transition, but with few examples of conscious…
Afforestation and reforestation: the Sicilian case study
2014
In some regions of the world such as the Northern Hemisphere, the abandonment of agricultural land is one of the most widespread forms of land use change. In general, abandonment is followed by colonization by herbaceous and woody plants. Since the 1950s, wide areas of Southern Italy have been afforested for soil conservation improvement. In order to quantify the effects of agricultural abandonment and artificial afforestation on soil organic carbon (SOC), a dataset of 48 Sicilian sites has been analyzed. Because of their high environmental variability, these sites can be considered as representative of Southern Italy and in general of the Mediterranean basin. Soil samples were taken throug…
Spatial Succession for Degradation of Solid Multicomponent Food Waste and Purification of Toxic Leachate with the Obtaining of Biohydrogen and Biomet…
2022
A huge amount of organic waste is generated annually around the globe. The main sources of solid and liquid organic waste are municipalities and canning and food industries. Most of it is disposed of in an environmentally unfriendly way since none of the modern recycling technologies can cope with such immense volumes of waste. Microbiological and biotechnological approaches are extremely promising for solving this environmental problem. Moreover, organic waste can serve as the substrate to obtain alternative energy, such as biohydrogen (H2) and biomethane (CH4). This work aimed to design and test new technology for the degradation of food waste, coupled with biohydrogen and biomethane prod…
Succession of States in Respect of Treaties on Human Rights
2022
1. Preliminary Remarks. 2. The Vienna Convention on Succession of States in respect of Treaties. 2.1 Scope of Application. 2.2 Reduction in its Scope of Application. 2.3 Increased Scope of Application. 3. Succession of States Practice in respect of United Nations Human Rights Treaties. 3.1 Membership in the United Nations Organization and Succession of States. 3.1.1 Membership in the United Nations Organization. 3.1.2 Succession of States to Membership in the United Nations Organization. 3.2 Succession of States and United Nations Human Rights Treaties. 4. Succession of States Practice in respect of Human Rights Treaties Concluded by the Council of Europe. 4.1 Membership in the Council of E…