scholarly journals Structure and Dynamics of Deadwood in Pine and Oak Stands and their Role in CO2 Sequestration in Lowland Forests of Central Italy

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 253
Author(s):  
Angela Lo Monaco ◽  
Giulia Luziatelli ◽  
Francesco Latterini ◽  
Farzam Tavankar ◽  
Rodolfo Picchio

There are many data values describing deadwood in primary forests, however, there is much less information concerning managed forests, particularly in the Mediterranean area. Whole non-living woody biomass (deadwood) is the main component of forest types that plays a vital role in improving and maintaining biodiversity. The dynamics of deadwood and CO2 sequestration by deadwood were examined in three Mediterranean lowland forests: pine forest Pinus pinea L.), evergreen oak forest (Quercus ilex and Quercus suber L.), and deciduous oak forest (Quercus cerris L.). The aim of this study was to carry out a quantitative and qualitative evaluation of the deadwood to gather useful information for the Mediterranean forest management, and to provide some useful data that can be integrated into the methods of estimation for carbon stored in dead components of Mediterranean forest types. The investigations focused on the characterization of the deadwood, to determine which traits are dominant and their potentially functionality within the forest type. Results indicated the deciduous oak type had the highest amount of stand volume (379 m3/ha), deadwood volume (161.8 m3/ha), and C storage (31.43 t/ha). The major component of dead wood was the standing dead trees or snags. There was a higher volume of deadwood in the deciduous oak forest than in the pine and evergreen oak forests. In addition, the deciduous oak forest had a higher snag creation index, a higher fallen log creation index, and a higher past management index compared to pine and evergreen oak forest types. Deadwood volume increased as the decay class in the deciduous oak forest increased, while this trend decreased in the evergreen oak and pine forests. The amount of deadwood was affected by the forest type and forest management regime. Dynamic and past management of deadwood indices indicated that their structure was still in the initial phase of creation and decay in the pine and evergreen oak forests. A comparison with other studies on similar forest types brought out that the variation range of the main parameters for the management of deadwood fell within the variation of the parameters studied. However, the values of these parameters cover a broad range. The population of each forest type is extremely sensitive to the different evolutionary periods of the forest dynamics.

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1128
Author(s):  
Indra Prasad Subedi ◽  
Prem Bahadur Budha ◽  
Ripu Mardhan Kunwar ◽  
Shambhu Charmakar ◽  
Sunita Ulak ◽  
...  

The information available on the diversity of ant species and their distribution and interaction with forest health in Nepal remains limited. As part of a nationwide project on forest health, we conducted inventories to assess the diversity and distribution of forest ants and their role in forest management in Nepal. Ants were collected from 187 plots of 10 m × 10 m size along the north–south belt transects in eastern, central, and western Nepal. We used vegetation beating, sweeping, and hand collection methods in selected forest types. In each transect, we designed six plots in each major forest type (Sal, Schima–Castanopsis, and broadleaf mixed forests) and three plots each in deodar, Alnus, riverine, and Cryptomeria forests. We recorded 70 ant species from 36 genera and six subfamilies. This includes five genera and nine species new for the country, as well as eight tramp species, four of which are major ecological, agricultural, and/or household pests. Our study indicates that forest ant species richness is high in western Nepal and the Siwaliks, and it decreases as elevation increases. The high diversity of ant species in the forests of Nepal needs to be assessed with further exploration using multiple sampling methods covering all seasons and forest types. Ants can be useful indicators for ecosystem management and human impacts on forests. Reports of invasive ants in Nepalese forests indicate the relevance of urgent interventions through sustainable forest management initiatives to prevent future incursions.


Topola ◽  
2020 ◽  
pp. 41-52
Author(s):  
Vid Rađević ◽  
Predrag Pap ◽  
Verica Vasić

The paper shows a historical overview of the common oak forest management in Ravni Srem from the end of the 19th century to the present. Particular attention is paid on various ways of regeneration, tending and protection measures of these forests in the past and present and proposed the directions for the common oak forests regeneration in the future.


2020 ◽  
Vol 54 (33-34) ◽  
pp. 2125-2176
Author(s):  
Makoto Kato ◽  
Atsushi Kawakita ◽  
Ryutaro Goto ◽  
Tomoko Okamoto ◽  
Chisato Kobayashi ◽  
...  

2015 ◽  
Vol 05 (03) ◽  
pp. 260-273 ◽  
Author(s):  
Mohamed Boulmane ◽  
María del Carmen Santa-Regina ◽  
Mohamed Halim ◽  
Abderrahim Khia ◽  
Hayat Oubrahim ◽  
...  

2017 ◽  
Vol 26 (2) ◽  
pp. eRC01S
Author(s):  
Míriam Piqué ◽  
Pau Vericat ◽  
Mario Beltrán

Aim of the study: To develop regional guidelines for sustainable forest management.Area of the study: Forests of Catalonia (NE Spain).Material and methods: The process of developing the forest management guidelines (FMG) started by establishing a thorough classification of forest types at stand level. This classification hinges on two attributes: tree species composition and site quality based on ecological variables, which together determine potential productivity. From there, the management guidelines establish certain objectives and silvicultural models for each forest type. The forest type classifications, like the silvicultural models, were produced using both existing and newly-built growth models based on data from the National Forest Inventory (NFI) and expert knowledge. The effort involved over 20 expert working groups in order to better integrate the expertise and vision of different sectorial agents.Main results: The FMG consist in quantitative silvicultural models that include typical silvicultural variables, technical descriptions of treatments and codes of good practice. Guidelines now cover almost all forest types in Catalonia (spanning up to 90% of the Catalan forest area). Different silvicultural models have been developed for pure and mixed stands, different site quality classes (2–3 classes per species), and even- and multi-aged stands.Research highlights: FMG: i) orient the management of private and public forests, (ii) provide a technical scaffold for efficient allocation/investment of public subsidies in forest management, and (iii) bridge forest planning instruments at regional (strategic-tactical) and stand (operational) level.


2015 ◽  
Vol 166 (1) ◽  
pp. 24-31
Author(s):  
Mirjam Bader ◽  
Urs Gimmi ◽  
Matthias Bürgi

The forests in the Canton of Zurich around 1823 – forest types and tree species Based on early forest management plans from 1823, this paper analyses forest management practices and tree species composition in the public forests of the Canton of Zurich in the early 19th century. Forest type distribution across the canton is reconstructed and detailed tree species composition is shown for 31 communities in the north-western part of the canton. For these communities, we compared the historical tree species composition with modern data from a regional forest inventory. The results show that coppice with standards was the most important forest type in the early 19th century. Tree species composition largely depends on the forest types. The highest diversity in tree species can be found in coppice and coppice-with-standards forests. The analyses reveal no clear relationship between tree species composition and environmental factors such as climate, topography and soil. This leads to the conclusion that in the early 19th century already management had a stronger influence on tree composition than natural conditions. During the last 200 years, tree species composition in the Canton of Zurich changed profoundly. Whereas today's forests are more natural in terms of species composition, they are less diverse in species. Knowing the tree species composition in the past can thus be helpful in conservation projects, e.g. in establishing coppice and coppice-with- standards forests in order to promote rare light-demanding plant and animal species.


2021 ◽  
Author(s):  
John M Zobel ◽  
Alan R Ek ◽  
Christopher B Edgar

Abstract Over the last four decades, forest management goals have transitioned to multiuse objectives, begging the question of their impact on wildlife habitat. Using USDA Forest Service Forest Inventory and Analysis data and the WHINGS (Wildlife Habitat Indicator for Native Genera and Species) model, the trends in wildlife habitat were quantified from 1977 to 2018 across Minnesota. Statewide, 35.5% of species experienced significant improvement in habitat, 29% significant reductions, and 35.5% nonsignificant change. The extent of habitat (acreage) increased for 100% of species, but the quality declined for 63% of species. Results were explained by the reduction in acreage of larger size classes of the aspen, balsam, and birch forest type and increases in smaller, younger forest area. Specifically, forest management that converted aspen stands to other forest types benefited certain wildlife species over others. Future forest management should consider the balance between the habitat requirements of the diverse native species in Minnesota. Study Implications Trends in forest wildlife habitat over the last four decades across Minnesota highlight that forest management often favors one species at the expense of another. Statewide, wildlife species with preferences for larger, older aspen experienced diminished habitat, whereas habitat for species preferring younger forest types or older nonaspen types increased. Regionally, the forested ecoregions in Minnesota (northeast) generally saw reduced habitat, whereas the prairie/agricultural regions (south and northwest) saw the largest increases. Through this and further applications, forest and wildlife managers can rapidly assess the habitat implications of proposed management, whether for environmental review, forest planning, or harvest scheduling.


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