Digitalni repozitorij raziskovalnih organizacij Slovenije

Iskanje po repozitoriju
A+ | A- | Pomoč | SLO | ENG

Na voljo sta dva načina iskanja: enostavno in napredno. Enostavno iskanje lahko zajema niz več besed iz naslova, povzetka, ključnih besed, celotnega besedila in avtorja, zaenkrat pa ne omogoča uporabe operatorjev iskanja. Napredno iskanje omogoča omejevanje števila rezultatov iskanja z vnosom iskalnih pojmov različnih kategorij v iskalna okna in uporabo logičnih operatorjev (IN, ALI ter IN NE). V rezultatih iskanja se izpišejo krajši zapisi podatkov o gradivu, ki vsebujejo različne povezave, ki omogočajo vpogled v podroben opis gradiva (povezava iz naslova) ali sprožijo novo iskanje (po avtorjih ali ključnih besedah).

Pomoč
Išči po:
Možnosti:
 

1 - 10 / 500
Na začetekNa prejšnjo stran12345678910Na naslednjo stranNa konec
1.
2.
3.
4.
5.
6.
7.
8.
The conservation status assessment of Natura 2000 forest habitats in Europe : capabilities, potentials and challenges of national forest inventories data
Iciar Alberdi, Leónia Nunes, Marko Kovač, Ingrid Bonheme, Isabel Cañellas, Francisco Castro Rego, Susana Dias, Inês Duarte, Monica Notarangelo, Maria Rizzo, Patrizia Gasparini, 2019

Povzetek: Key message There is a need to improve the consistency of international information concerning the conservation status assessment of the species and habitat types in the Natura 2000 reports. National Forest Inventories could contribute towards a more objective and harmonised assessment although their use shows some challenges as low precision for rare or small area habitats. Recommendations for a set of 12 structural and functional indicators are provided. Context There are differences among Member States as regards applying conservation status assessment and priorities according to the Directive on the conservation of natural habitats (Habitats Directive). Aims This paper aims to analyse the consistency as regards forest habitat types reporting and the use and suitability of National Forest Inventories (NFIs) to assess their conservation status, as well as to provide recommendations for harmonised assessments through NFIs. Methods A survey was carried out concerning the use of NFI data to report within the commitments of the Habitat Directive. The survey covered 13 European countries, accounting for 62% of forest habitat area. Additionally, case studies were carried out in four countries. Results The identification of forest habitat types and the set of quantitative and/or qualitative indicators differ between countries. The use of NFI data is being considered in seven countries and it is expected to increase for the 2013%2018 reporting period. The main challenges reported of use of NFI data are related to the habitat identification and their mapping, and the monitoring frequency, design and costs (i.e. rare or small area habitats).
Ključne besede: forest biodiversity, function and structure indicators, international reporting, vegetation, reference value, thresholds, NFI, harmonination
DiRROS - Objavljeno: 17.10.2019; Ogledov: 2; Prenosov: 1
URL Celotno besedilo (0,00 KB)

9.
Towards a set of national forest inventory indicators to be used for assessing the conservation status of the Habitats Directive forest habitat types
Marko Kovač, Patrizia Gasparini, Monica Notarangelo, Maria Rizzo, Isabel Cañellas, Laura Fernández-de-Uña, Iciar Alberdi, 2019

Povzetek: Since the enactment of the EU Habitats Directive, the conservation status of forest habitat types, habitats of species, and species has become the central concept of the Directive's nature conservation legislation. Despite its role, it has drawn relatively little attention. Within a rather short research period, a few research papers have addressed the existing definitions, indicators for the conservation status assessment, and assessment techniques. This paper attempted to complete the set of measurable indicators available in national forest inventories and connect them with the forest habitat types% conservation status components (area, function, structure, and prospects). A set of 40 indicators was defined, labelled with one or more of the four conservation status components and assessed with the quality dimensions. The analysis uncovered that five indicators could be used to assess the component of range and area, 20 that of structure, 22 that of function and 27 that of prospects. It also showed that conventional forestry indicators such as tree species, diameter at breast height, and regeneration are less sensitive regarding the data quality. Conversely, some typical biodiversity indicators lacked completeness, timeliness, and precision. In addition to this analysis, the data distributions (data for them were provided by the national forest inventories of Italy, Slovenia, and Spain) of some indicators were analysed. Based on all the results, it was also possible to conclude that there is a shortage of national forest inventory indicators for the assessments of the area and function conservation status components. While the area component should be described with the indicators of forest habitat type fragmentation, mingling and perforation with non-forest and other forest vegetation communities, the functional component is bereft of indicators describing processes such as biomass growth and carbon cycling. Future research should thus search for more indicators to represent all conservation status components in a more balanced way. More efforts should also be expended into the harmonisation of indicators.
Ključne besede: European forests, forests, forest structure, forest function, prospect, quality dimensions
DiRROS - Objavljeno: 17.10.2019; Ogledov: 2; Prenosov: 1
URL Celotno besedilo (0,00 KB)

10.
Iskanje izvedeno v 0 sek.
Na vrh