THE WORLD CONFERENCE ON ECOLOGICAL RESTORATION

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44 Oral Presentations ture without nursing grasses with predominating stress tolerators is better, since it enables a smoother succession course. Keywords: roadside slopes, dry grassland, restoration, floristic composition, permanent plots, succession, Slovenia. A satellite-based approach to plan fluvial habitat restoration Carone M.T. 1,2 , S. Manfreda 1 , T. Simoniello 2 , V. Cuomo 2 1 DIFA (Dipartimento di Ingegneria e Fisica dell'Ambiente)- Università di Basilicata, Potenza, Italy 2 IMAA-CNR (Istituto di Metodologie per l'Analisi Ambientale-Consiglio Nazionale delle Ricerche), Tito Scalo (PZ), Italy The usefulness of remote sensing techniques in analysing landscape structure has been widely demonstrated; whereas the application of these for planning ecological restoration interventions is not thoroughly explored yet. In this study we propose an approach based on satellite data as input for hydrological analyses to identify better sites for restoration ecology interventions in fluvial ecosystems. Among the several existing restoration techniques the construction of buffer strips along fluvial degraded banks is an accepted strategy of ecological restoration for improving water quality and habitat structure. The object of this research is to identify, along a fluvial habitat, critical segments because of the contribution of landscape superficial runoff. The latter is considered as a very important cause for pollutant transporting from fluvial surrounding areas. Such identification allows for precise localizing of buffer strips creation. The study area, the upper part of Agri River Basin, is located in Basilicata region (Southern Italy). This river shows very critical areas along its principal axis because of concrete embankments and widespread agricultural areas in its landscape. Remote sensing techniques were used to obtain a land use map of the territory from a summer LANDSAT-TM (Thematic Mapper) image. This map represented the basis for superficial runoff analyses related to different land use typologies by means of a hydrological distributed model; final data located the segments needing buffer strips creation. Results show that this methodology provides satisfactory information for an efficient intervention planning by evaluating landscape influences for the identification of critical areas in fluvial habitats. Keywords: Landsat-TM, ecological restoration, fluvial ecosystem, hydrological model. The assessment of a restored site in a reclamation area along the northern Adriatic coast Carrara F. Dept. Land and Agroforest Environments (TeSAF) - University of Padova, Italy The study was carried out to evaluate the different ecological values of a natural reserve (Valle Vecchia, Caorle-Venezia), S.I.C. and Z.P.S., and develop a management plan of the different zones. The area consists of two parts: a coastal area, charachterized by the dunal system and an anthropogenic pine woodland, and a more developed area, used for agroforestry practices, with two wetlands, some planted woodlands and many hedgerows planted to separate the cultivated fields. We developed and applied a set of indexes to describe the flora and the fauna of the site. The flora indexes include: species diversity (Margalef), biogeographic value, chromatic asset, number of rare and protected species, degree of naturalness of the community successions, sociological behaviour (Ellenberg). The wildlife indexes (birds and waterfowls) include: vulnerability level, biogeographic value, social value: contactableness level, amenity level, hunting value. We also assesed the different anthropic impacts related to the coastal part, which is the most frequented by visitors, and beach users. The diverse floristic composition and the percentage of surface occupied by paths were considered. The zone characterized by the highest ecological value for the flora and the fauna is the same in areas where the human impact is the lowest and in these areas there are very few synanthropic flora species. The indexes allowed us to establish a zoning criterion and distinguish three diverse zones with a different ecological value. The management plan will be based on three different protection levels for the site. Keywords: indexes, ecological value, restored site, natural reserve, management plan.
2005 The World Conference on Ecological Restoration 45 Restoration of desert abandoned agricultural fields Castellanos 1 A.E., J.L. Moreno 2 , R. Méndez 1 1 DICTUS, Universidad de Sonora, Hermosillo, Sonora. Mexico. 83000 2 Colegio de Sonora, Hermosillo, Sonora. Mexico 83000 Biodiversity, functionality and productivity are main goals for restoration and rehabilitation practices. When large areas are involved, scaling of restoration goals should consider socioeconomic and desertification amelioration issues. When those issues are not considered, arid lands restoration and rehabilitation are perceived as “wasted” efforts that consume large amounts of capital resources. Abandoned agricultural fields in La Costa de Hermosillo within Sonoran desert habitats, have increased in the last 20 years to a patchy landscape close to 100 thousand hectares. Restoration have been initiated considering previous ecological information on historical accounts, plant secondary succession and resource use strategies of dominant plant species in native desert ecosystems. Rehabilitation considers a matrix of different economic potentialities for specific native and introduced plant species into these new habitats. We conclude this paper reviewing the ecological and environmental considerations for developing a restoration strategy that can be successfully applied to abandoned agricultural fields in desert habitats. Keywords: desert secondary succession, abandoned agricultural fields, desertification, environmental costs, desert restoration. Ecological restoration of the gypsum quarry “Rio de Aguas” in Almeria (SE Spain) based on soils and floristic analyses Castelló R., J.M. Castillejo, J.M. Martín, J.L. de la Horra, C. Vizcayno, J. Pastor Centro de Ciencias Medioambientales, CSIC, Madrid This report describes a series of studies aimed at recovering a gypsum quarry area (Rio de Aguas, Sorbas, Almeria, Spain), which through years of mining has suffered intense degradation effects on landscape and geomorphology. The aim of the work was to minimize these effects. It was made a thorough evaluation of the flora and native vegetation of the quarry and its surroundings. The climate and soil of the area were defined and mapped in detail to establish a good time frame for installing a protective plant cover aimed at mitigating erosion-degradation and at integrating the landscape of the quarry within its natural setting. A physico-chemical and mineralogical analysis of the soil allowed to establish suitable amendments for the soil used to cover the area to be restored, mainly in terms of OM, total N and SO 4 contents. Studies of flora and vegetation, specially in natural plant communities, have indicated the presence of numerous species (20% endemic) and their preference for the different landscape units. Thus, some taxa showed a preference for slopes, sunny or shady sites, gypsum substrates or basic nongypsum materials, and also different soil properties. In addition, based on endemism values and ecological preferences, we are presently creating a stock of seeds and have started greenhouse tests to evaluate the behavior of the different taxa. Keywords: landscape degradation, soils, flora, vegetation, ecological preferences. Problematic of hydrologic forest restoration in the semiarid/arid climate: the experiencein the mounts of the Vinalopó basin (Spain) Cavallé-Garrido A., M. Vigil TECNOMA S.A. Valencia. Spain Hydrologic-forest restoration in semiarid/ arid climate: the case of Vinalopó basin. Zone in semiarid climate gravely eroded as consequence of as anthropic as climatologic factors, due mainly to erroneous reforestations and adverse climatic conditions characterised for the scanty of precipitation and torrential rains episodes. The treated themes are the problematic of reforestation in these mounts and the necessary actions to get a satisfactory hydrologic-forest restoration in this environment. Application of new techniques for water utilisation. Importance of implantation irrigation. Physic and biologic techniques for erosion correction. Keybords: hydrologic-forest restoration, semiarid, erosion, water utilisation, irrigation, reforestation techniques.
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AUTHOR INDEX
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268 Author Index Behjou F.K. . . .
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270 Author Index Ehrlén J. . . . .
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THE WORLD CONFERENCE ON ECOLOGICAL RESTORATION

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