The Role of Microsites in the Natural Regeneration of Trees in Boreal Tall-Herb Dark Coniferous Forests of the Northern Urals

2019 ◽  
Vol 46 (2) ◽  
pp. 200-209
Author(s):  
A. S. Efimenko ◽  
A. A. Aleinikov
Keyword(s):  
Natural Regeneration ◽  
Coniferous Forests ◽  
Northern Urals

scholarly journals NATURAL REGENERATION OF CONIFEROUS FORESTS OF THE LOWER ANGARA REGION AFTER THE FIRES OF VARYING INTENSITY

ÈKOBIOTEH ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 536-539
Author(s):  
S.V. Zhila ◽  
◽  
G.A. Ivanova ◽  
Keyword(s):  
Forest Ecosystem ◽  
Natural Regeneration ◽  
Forest Ecosystems ◽  
Qualitative Assessment ◽  
Coniferous Forests ◽  
Ecosystem Productivity ◽  
Environmental Processes ◽  
Global Environmental ◽  
Coniferous Plantations

The issue of forest ecosystem productivity and stability of Siberia has not lost its relevance today. The study of this issue is directly related to the assessment of the role of forest ecosystems in global environmental processes. Every year on the territory of Siberia there are thousands of fires, most of which falls on the light coniferous plantations. In connection with what was shown in the quantitative and qualitative assessment of post-natural resumption after fires of different intensity.

Ecological, coenotic and floristic analysis of groups of associations of broadleaved-coniferous forests from central European Russia

2001 ◽  
pp. 38-48 ◽  
Author(s):  
L. B. Zaugolnova ◽  
I. I. Istomina ◽  
E. V. Tikhonova
Keyword(s):  
Wide Distribution ◽  
European Russia ◽  
Coniferous Forests ◽  
Computer Data ◽  
East Europe ◽  
Central European ◽  
Reference Base ◽  
Floristic Analysis ◽  
Regional Factors

Two computer data bases were formed: reference base «Prodromus» including the nomenclature forest syntaxa and experienced geobotanic releves «Forests of European Russia». Ecological, coenotic and floristic analysis of broadleaved-coniferous forests mostly corresponding to association Rhodobryo rosei – Piceetum abietis Korotkov 1986 was conducted with these bases. Releves (305) from South taiga and broadleaved-coniferous subzone were used. The analysis revealed complex syntaxonomy, bo­real-nemoral character and wide distribution ass. Rhodobryo-Piceetum from central European Russia. Ecolo­gical comparison of this association with some no­men­clature types of broadleaved-coniferous communities in East Europe was carried out. Preliminary prodromus for Euro­pean Russian mixed forests is suggested. Role of ecologi­cal, succession and regional factors was shown for dif­ferentiation of syntaxa.

scholarly journals Effects of gap size, gap age, and bamboo Fargesia denudata on Abies faxoniana recruitment in South-western China

2015 ◽  
Vol 24 (2) ◽  
pp. e025 ◽  
Author(s):  
Wen Kang ◽  
Cheng Tian ◽  
Dongwei Kang ◽  
Mengjun Wang ◽  
Yunxi Li ◽  
...  
Keyword(s):  
Natural Regeneration ◽  
Research Area ◽  
Western China ◽  
Coniferous Forests ◽  
Gap Size ◽  
Abies Faxoniana ◽  
Age Gap ◽  
Natural Reserve ◽  
Negative Effect ◽  
Fargesia Denudata

<p><em>Aim of study</em>: to study the effects of gap size, gap age and bamboo <em>Fargesia denudata</em> on natural regeneration of <em>Abies faxoniana</em>, both of which are the ubiquitous dominants in our research area.</p><p><em>Area of study</em>: subalpine coniferous forests in Wanglang Natural Reserve in Southwestern China.</p><p><em>Material and Methods:</em> 10 transect belts were randomly established, and a total of 97 gaps were recorded and used.</p><p><em>Main results</em>: (1) the number of bamboos with coverage of &lt;17% significantly increased with increases of gap size and age, but the latter had little influence on the numbers of <em>F. denudata</em> with coverage of &gt;17%. (2) <em>F. denudata</em> strongly inhibited <em>A. </em><em>faxoniana</em> seedlings and saplings in small, young and old gaps, where the amount of <em>A. </em><em>faxoniana</em> recruitment was relatively abundant, than in other types of gap. (3) The numbers of <em>A. </em><em>faxoniana</em> seedlings in A-gaps, significantly decreased with the increases in gap size. However, in gaps where <em>F. denudate </em>was also present, <em>A. </em><em>faxoniana</em> seedlings and saplings were insensitive to gap size or age. <em>Research highlights</em>: thick <em>F. denudata</em> would not be influenced by gap size or age. Because of the low occurrences of <em>A. </em><em>faxoniana</em> seedlings and saplings, the negative effect of gap size, gap age and <em>F. denudata</em> on <em>A. </em><em>faxoniana</em> recruitment was unclear.</p><p><strong>Key words</strong>: <em>Abies faxoniana</em>; <em>Fargesia denudata</em>; gap age; gap size; regeneration.</p>

The ecological role of tree-dwelling mammals in western coniferous forests

2003 ◽  
pp. 405-443 ◽  
Author(s):  
Keith B. Aubry ◽  
John P. Hayes ◽  
Brian L. Biswell ◽  
Bruce G. Marcot
Keyword(s):  
Coniferous Forests ◽  
Ecological Role

scholarly journals High intraspecific genetic and morphological variation in the pioneer lichen Cladonia rei colonising slag dumps

2014 ◽  
Vol 9 (5) ◽  
pp. 579-591 ◽  
Author(s):  
Piotr Osyczka ◽  
Kaja Rola ◽  
Anna Lenart-Boroń ◽  
Piotr Boroń
Keyword(s):  
Natural Regeneration ◽  
Phenotypic Variability ◽  
Full Range ◽  
Morphological Variability ◽  
Single Population ◽  
Anthropogenic Habitats ◽  
Rdna Sequences ◽  
Geographical Regions ◽  
Outgroup Species

AbstractThis study investigates the genetic and morphological variability of the lichen Cladonia rei inhabiting strongly contaminated postsmelting slag dumps in southern Poland. Altogether, 27 C. rei samples were analysed, including 17 from a single population in one dump. The phylogenetic analysis includes samples of C. rei, outgroup species, and external sequences of Cladonia section representatives from GenBank. Comparative analysis of the internal transcribed spacer (ITS) rDNA sequences revealed the presence of 19 C. rei haplotypes overall, including several of the most frequent, of which 11 are represented by single individuals only. As many as 12 haplotypes were recorded within a single population. Three strongly supported monophyletic clades comprised of specimens from different geographical regions were recovered. Morphometric analysis showed great phenotypic variability within particular clades. Apart from a full range of previously known morphological forms of the species, an additional specific morphotype was recognised in the dumps; however, its representatives do not create a monophyletic group. High genetic variability within a single population suggests that C. rei has a great potential for colonising anthropogenic habitats. This attribute emphasises the role of this lichen as an essential pioneer in the early stages of natural regeneration of such sites.

scholarly journals Emergence levels of pine shoot beetles from roundwood piles of Scots pine and the cascading damage in the surrounding forests

Silva Fennica ◽  
2021 ◽  
Vol 55 (5) ◽  
Author(s):  
Markus Melin ◽  
Tiina Ylioja ◽  
Leena Aarnio ◽  
Katri Hamunen ◽  
Seppo Nevalainen ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Bark Beetle ◽  
Bark Beetles ◽  
Coniferous Forests ◽  
The Future ◽  
Forest Legislation ◽  
Pine Shoot Beetles

Bark beetles are amongst the most aggressive pest agents of coniferous forests. Due to this, many boreal countries have designated laws aiming to lower the risk of bark beetle epidemics. Finland’s forest legislation has pre-emptive measures targeted against bark beetles, and for Scots pine ( L.), the law concerns pine shoot beetles ( spp.). This study used data collected around 25 piles of Scots pine roundwood that were harvested in the winter but left in the forest until the following November. Thus, the pine shoot beetles were able to use the piles for breeding. We assessed the number of emerged insects from the piles and the cascading damage they caused in the surrounding forests. All roundwood piles, regardless of their volume, were used by the beetles for breeding. Highest densities of beetle exit holes were found from the parts of the log with thick and intact bark. If the bark of the log was damaged by the harvester head, the number of beetles decreased significantly. Depending on the volume of the roundwood pile, the cascading damage (fallen shoots) was noticeable up to ca. 40–60 m from the roundwood pile. Storing of piles smaller than 50 m did not cause excess damage. The number of fallen shoots per tree was generally below the known thresholds for when growth losses can occur. However, the study was conducted in mature forests, and it can be assumed that the recorded damage levels would severely affect the growth of young pines, raising the question of where to store the roundwood. As with other bark beetles, the role of beetles as damage agents may change in the future, but based on this as well as past studies, the species can be viewed as a notable damage agents only around long-term wood storage sites in the current northern conditions.Pinus sylvestrisTomicus3Tomicus

scholarly journals Features of formation of micromosaic structure of dark coniferous forests of the Northern Urals

2017 ◽  
pp. 42-54 ◽  
Author(s):  
Алейников ◽  
Aleksey Aleynikov ◽  
Тюрин ◽  
Aleksandr Tyurin ◽  
Ефименко ◽  
...  
Keyword(s):  
Coniferous Forests ◽  
Northern Urals

Effects of riparian woody vegetation on EPT functional connectivity in Western Germany

2021 ◽  
Author(s):  
Andrés Peredo Arce ◽  
Martin Palt ◽  
Martin Schletterer ◽  
Jochem Kail
Keyword(s):  
Water Pollution ◽  
Functional Connectivity ◽  
Riparian Vegetation ◽  
Habitat Degradation ◽  
Riparian Forest ◽  
Landscape Connectivity ◽  
Riparian Forests ◽  
Coniferous Forests ◽  
Western Germany

&lt;p&gt;In the degraded European landscapes riparian corridors had have become key features to maintain connectivity between habitat patches for multitude of organisms. This role of riparian forests has been assessed from the purely structural point of view, to complex models specific for particular species or groups of species, from mammals to plants, from endangered to invasive species.&lt;/p&gt;&lt;p&gt;Dispersion is a key part of the lifecycle of EPTs (Ephemeroptera, Plecoptera and Trichoptera) as they live most of their lives as aquatic juveniles, being drifted downstream, and disperse back upstream when they become short-lived winged adults. These three families of aquatic macroinvertebrates are widely used as bioindicators because of their sensitivity to water pollution and habitat degradation, but little is known about how the riparian vegetation impacts their ability to disperse and recolonize. For example, riparian vegetation could help EPTs dispersion by protecting them from harsh weather conditions, or by helping them to orientate themselves by changing how the reflexion of the light on the water polarises.&lt;/p&gt;&lt;p&gt;Nevertheless, connectivity is not the only driver of the EPT community as other parameters can have a direct effect on the community composition. For example, water pollution is an important driver of the freshwater macroinvertebrate community and in locations where pollution is high is not expected to find almost any EPTs individual regardless of the landscape connectivity. Furthermore, other landscape features can hinder the role of riparian forests as corridors for being a barrier to EPT dispersion, like dams or coniferous forests.&lt;/p&gt;&lt;p&gt;In this study we compare the EPT communities on 120 pairs of sites, each pair located in the same river at 1 to 5 km distance, with different riparian vegetation conditions in Western Germany. The communities are characterised by their overall dispersion capacity using the Species Flying Propensity index (Sarremejane et al. 2017). The riparian vegetation is identified using areal images in the 10 meters and 30 meters buffer from the river.&lt;/p&gt;&lt;p&gt;We expect that riparian forest fragmentation will directly impact functional connectivity, and therefore, in locations with less fragmented riparian forests the EPT community will be mainly composed by weak dispersers (and &lt;em&gt;vice versa&lt;/em&gt;). Nevertheless, covariates that can impact or mask this effect were taken into account: catchment land use, saprobic pollution, naturalness, hidromorphological hydromorphological degradation and also other features as coniferous forests or dams.&lt;/p&gt;

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