scholarly journals ENTOMOFAUNA FROM THE FOREST DISTRICT VULTURESTI, OLT COUNTY

2021 ◽  
Vol 26 ◽  
pp. 331-334
Author(s):  
Cătălin STAN
Keyword(s):  
Forest District

scholarly journals Occurrence of the Green Shield-Moss Buxbaumia viridis (Moug.) Brid. in the Bieszczady Mountains of Poland

Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 374
Author(s):  
Piotr Brewczyński ◽  
Kamil Grałek ◽  
Piotr Bilański
Keyword(s):  
National Park ◽  
Large Scale ◽  
Conservation Status ◽  
Natura 2000 ◽  
Field Work ◽  
Managed Forests ◽  
Moss Species ◽  
Microhabitat Preferences ◽  
Natura 2000 Site ◽  
Forest District

The small-sized gametophytes and sporophytes of the green shield-moss Buxbaumia viridis (Moug.) Brid. make it difficult to study. However, in Europe, there has been increasing interest in this species in the past few years, mostly as a result of the implementation of the Natura 2000 network. In Poland, B. viridis has only been reported in isolated studies that have been limited in terms of area and the number of participating workers. One of the Polish regions where B. viridis was recently recorded is the Bieszczady Mountains, but there have been no large-scale surveys of that region to date. The objective of the current work was to describe the B. viridis population in the Bieszczady Mountains in terms of its spatial distribution and abundance, investigate its selected microhabitat preferences, and evaluate the conservation status of this moss species within the Natura 2000 site Bieszczady PLC180001. The studied region encompassed 93,490.44 ha, including 69,056.23 ha of managed forests and 24,434.21 ha of forests belonging to the Bieszczady National Park. A preliminary survey was conducted in the Cisna Forest District (forest area of 19,555.82 ha) on 15–17 November 2017, while the main survey was performed in selected forest subcompartments of four forest districts—Baligród, Komańcza, Lutowiska, and Stuposiany—as well as the Bieszczady National Park from 5 to 16 November 2018. The field work consisted of searching for B. viridis sporophytes and setae and recording selected population and locality characteristics. The study led to the discovery of 353 new B. viridis localities in 202 study areas, with 9197 diploid individuals (sporophytes or setae only) growing in 545 microhabitats. The number of B. viridis localities discovered in the Bieszczady Mountains during 17 days of survey in 2017 and 2018 was two times higher than the combined number of localities previously found in Poland over more than 150 years (159 localities). Additionally, the number of sporophytes and setae identified was two times greater than their overall number in previous records. In addition, this study provides information about selected microhabitat preferences and the conservation status of this moss in the Bieszczady Natura 2000 site.

scholarly journals The impact of beaver ponds on water resources in the catchment area in the Browsk Forest District - a case study

2009 ◽  
Vol 70 (4) ◽  
pp. 363-371
Author(s):  
Andrzej Boczoń ◽  
Michał Wróbel ◽  
Valentyn Syniaiev
Keyword(s):  
Water Resources ◽  
Catchment Area ◽  
Beaver Ponds ◽  
The Impact ◽  
Forest District

Wpływ stawów bobrowych na zasoby wodne zlewni na przykładzie badań w Nadleśnictwie Browsk

scholarly journals Intensive Forestry on the West Coast

1978 ◽  
Vol 54 (3) ◽  
pp. 140-146
Author(s):  
J. Harry G. Smith
Keyword(s):  
West Coast ◽  
Private Land ◽  
Research Needs ◽  
Multiple Use ◽  
The West ◽  
Land Owners ◽  
Intensive Forest Management ◽  
Intensive Forestry ◽  
Forest Lands ◽  
Forest District

Intensive forestry on Canada's West Coast has some impressive accomplishments but re-investments of timber capital must increase many times to meet future needs. Intensive forest management requires greatly increased inputs of labour, capital, and knowledge in order to enhance the amount and value of yields from an ultimately limited land base. Attractive incentives must be developed for private land owners and users of public forest lands to sustain current yields of wild stands, to avoid a falldown in harvest as surplus old growth values are liquidated, and to make up for withdrawals from the land base and complications of timber management.Since 1912-13 direct B.C. government forest revenues have exceeded expenditures to 1976 by $847 million. British Columbians and many other Canadians are therefore deeply in debt to the forests of British Columbia, and soon should re-invest past surpluses to help build a base for even greater returns in future.Past trends, the current situation, relation to other areas, costs, responses, sources of funds, multiple use implications, alternatives, research needs, and incentives, are discussed with special reference to the Vancouver Forest District.

Trading space for time: Assessment of tree habitat shifts under climate change using bioclimatic envelopes

2021 ◽  
Author(s):  
Katharina Enigl ◽  
Matthias Schlögl ◽  
Christoph Matulla
Keyword(s):  
Climate Change ◽  
Tree Species ◽  
Ips Typographus ◽  
Future Climate ◽  
Forest Damage ◽  
Climate Conditions ◽  
North East ◽  
Bioclimatic Variables ◽  
The Future ◽  
Forest District

<p>Climate change constitutes a main driver of altering population dynamics of spruce bark beetles (<em>Ips typographus</em>) all over Europe. Their swarming activity as well as development rate are strongly dependent on temperature and the availability of brood trees. Especially over the last years, the latter has substantially increased due to major drought events which led to a widespread weakening of spruce stands. Since both higher temperatures and longer drought periods are to be expected in Central Europe in the decades ahead, foresters face the challenges of maintaining sustainable forest management and safeguarding future yields. One approach used to foster decision support in silviculture relies on the identification of possible alternative tree species suitable for adapting to expected future climate conditions in threatened regions. </p><p>In this study, we focus on the forest district of Horn, a region in Austria‘s north east that is beneficially influenced by the mesoclimate of the Pannonian basin. This fertile yet dry area has been severely affected by mass propagations of <em>Ips typographus</em> due to extensive droughts since 2017, and consequently has suffered from substantial forest damage in recent years. The urgent need for action was realized and has expedited the search for more robust alternative species to ensure sustainable silviculture in the area.</p><p>The determination of suitable tree species is based on the identification of regions whose climatic conditions in the recent past are similar to those that are to be expected in the forest district of Horn in the future. To characterize these conditions, we consider 19 bioclimatic variables that are derived from monthly temperature and rainfall values. Using downscaled CMIP6 projections with a spatial resolution of 2.5 minutes, we determine future conditions in Horn throughout the 21st century. By employing 20-year periods from 2021 to 2100 for the scenarios SSP1-26, SSP2-45, SSP3-70 and SSP5-85,  and comparing them to worldwide past climate conditions, we obtain corresponding bioclimatic regions for four future time slices until the end of the century. The Euclidian distance is applied as measure of similarity, effectively yielding similarity maps on a continuous scale. In order to account for the spatial variability within the forest district, this procedure is performed for the colder northwest and the warmer southeast of the area, individually seeking similar bioclimatic regions for each of these two subregions. Results point to Eastern Europe as well as the Po Valley in northern Italy as areas exhibiting the highest similarity to the future climate in this North-Eastern part of Austria.</p>

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