scholarly journals DISTRIBUTION OF SOME WOODY SPECIES AT THE NORTHERN BOUNDARY IN UST'-LENSKIY NATURE RESERVE (YAKUTIA). COMMUNICATION I. KAYANDER LARCH Larix cajanderi Mayr

2019 ◽  
Keyword(s):  
Nature Reserve ◽  
Woody Species ◽  
Northern Boundary ◽  
Larix Cajanderi

scholarly journals The Alien Fraction of the Woody Flora of Yelanetskyi Step Nature Reserve, Southern Ukraine

2020 ◽  
Vol 39 (4) ◽  
pp. 322-332
Author(s):  
Valeriia O. Konaikova ◽  
Olena V. Vakarenko
Keyword(s):  
Alien Species ◽  
Protected Area ◽  
Nature Reserve ◽  
Robinia Pseudoacacia ◽  
Ecological Factors ◽  
Woody Species ◽  
Carbonate Content ◽  
Steppe Communities ◽  
Trees And Shrubs ◽  
Southern Ukraine

AbstractResults of investigations on the patterns of distribution and dispersal of alien species of trees and shrubs in the territory of a steppe protected area, Yelanetskyi Step Nature Reserve (Mykolaiv Region, southern Ukraine), are presented. We registered within this protected area 10 alien woody species. For the most widespread ones (Ulmus pumila L., Gleditsia triacanthos L., Elaeagnus angustifolia L., Robinia pseudoacacia L.), we carried out ecological analyses. In order to establish the scope of impact of ecological factors upon these species, their specificity, and interdependence between ecological factors, the phytoindication method was applied (Didukh, 2012). The results of our analysis conducted on 12 main ecological factors (as outlined by Didukh, 2011), such as soil water regime (Hd), variability of damping (Fh), soil aeration (Ae), soil acidity (Rc), nitrogen content (Nt), salt regime (Sl), carbonate content in soil (Ca), thermoregime (Tm), climate humidity (Om), continentality (Kn), cryoregime (Cr), and light intensity (Lc), show that dispersal of model alien species does not have ecological limitation. However, E.angustifolia and R.pseudoacacia have the strongest capacity to penetrate the steppe communities, especially disturbed ones. Further dispersal of these alien species in the studied area and adjacent territories is hampered only by the integrity of the structure of steppe communities.

Dynamics of the forest vegetation of the Umtiza Nature Reserve, East London

Bothalia ◽  
1993 ◽  
Vol 23 (1) ◽  
pp. 111-116 ◽  
Author(s):  
J. J. Midgley ◽  
P. N. Gobetz
Keyword(s):  
Nature Reserve ◽  
Multivariate Analyses ◽  
Woody Species ◽  
Size Class ◽  
Forest Community ◽  
Species Occurrence ◽  
Importance Value ◽  
Fine Grained ◽  
Afromontane Forests ◽  
Canopy Species

The forest community at the Umtiza Nature Reserve near East London was surveyed using 24 plots (0.04 ha) in which all woody stems 0.5 m tall were enumerated. Based on a classification using numbers of stems of canopy species, it was assumed that basically only one forest community was sampled. Further multivariate analyses suggest that this forest is fine-grained. Sample plots were similarly placed in ordination space irrespective of whether woody species occurrence was used as importance value or if species occurrence per size class was used separately [seedlings (0.5-1.0 m), saplings (1-5 m) or canopy individuals ( 5 m)). An analysis of size-class distributions of the most common canopy species indicated that the majority of species exhibited inverse J-shaped size-class distributions. This is the expected pattern for a fine-grained forest. In these measures of dynamics, this forest is not fundamentally different to the more temperate Afromontane forests.

scholarly journals Changes in vegetation of the Mszar Bogdaniec nature reserve

2016 ◽  
Vol 77 (2) ◽  
pp. 104-116
Author(s):  
Marcin K. Dyderski ◽  
Andrzej M. Jagodziński
Keyword(s):  
Plant Communities ◽  
Nature Reserve ◽  
Detrended Correspondence Analysis ◽  
Woody Species ◽  
Monitoring And Evaluation ◽  
Ecological Traits ◽  
Current State ◽  
As Species ◽  
Phytosociological Relevés

Abstract Changes of vegetation in forests and wetlands require continuous monitoring and evaluation. Due to the lack of in-depth knowledge, it is still very challenging to predict and record vegetation changes. This study attempts to evaluate changes in forest and transitional bog vegetation over 14 years in the Mszar Bogdaniec nature reserve (West Poland; 21.98 ha). We described the current vegetation using 50 phytosociological relevés conducted in 2012 and 2013. Moreover, we calculated and compared ecological indices describing ecological traits of the vegetation in two different times. We also used Detrended Correspondence Analysis (DCA) to assess changes in floral composition. Most of the studied vegetation traits did not change significantly during the last 14 years. Statistically significant changes occured in the proportion of mosses and cover of the herb layer, both of which increased, as well as species richness in forest plant communities, and the cover of species from Scheuchzerio-Caricetea class in peat bog plant communities, both of which decreased. The current state of the vegetation is a result of former human activity such as drainage and planting monoculture tree stands. The observed changes during the last 14 years were fluctuations rather than direct changes. Encroachment of the woody species into transitional bog is a fluctuation, which may be secondary succession in the long-term.

scholarly journals Natural regeneration in the ‘Czmoń’ nature reserve (Wielkopolska Region)

2014 ◽  
Vol 75 (1) ◽  
pp. 61-75
Author(s):  
Paweł Horodecki ◽  
Katarzyna Wiczyńska ◽  
Andrzej M. Jagodziński
Keyword(s):  
Scots Pine ◽  
Natural Regeneration ◽  
Nature Reserve ◽  
Riparian Forest ◽  
Woody Species ◽  
Species Structure ◽  
Canopy Layer ◽  
Artificial Regeneration ◽  
Pine Stands ◽  
Scots Pine Stands

Abstract The ‘Czmoń’ nature reserve (23.65 ha) was established in 1998 to protect one of the best-retained areas of natural oak-hornbeam forest (Galio-Carpinetum) in the center of the Wielkopolska Region. Apart from oak-hornbeam forest, the ash-elm riparian forest (Querco-Ulmetum) and alder riparian forest (Fraxino-Alnetum) are found in the reserve. These plant communities, both natural and degenerated as a consequence of previous forest management, have created the convenient conditions for assessment the phytocoenoses’ regeneration potential. The aim of this study was to assess the age and species structure of woody species natural regeneration of the whole area of the nature reserve. To achieve that target, during August and September 2012, 142 sample plots were established with the total area 3550 m2 on which tree and shrub composition and densities were calculated. Woody species regeneration created various diverse communities among individual sub-units, however oak-hornbeam forest species were predominant in the whole regeneration layer. The character of a ‘natural’ forest was retained on a part of the stands. Moreover, regeneration in degenerated parts of the ‘Czmoń’ nature reserve stands is changing according to potential vegetation. Whereas, the establishment of gaps in the Scots pine stands using artificial regeneration was not worthwhile. The natural regeneration structure under the canopy layer of Scots pine stands unambiguously supports the claim that phytocoenoses can regenerate on their own. In spite of the oak regeneration being infrequent, all stands within the ‘Czmoń’ nature reserve retain substantial rejuvenation potential

scholarly journals Encroachment of woody species on a drained transitional peat bog in ‘Mszar Bogdaniec’ nature reserve (Western Poland)

2015 ◽  
Vol 57 (3) ◽  
pp. 160-172 ◽  
Author(s):  
Marcin K. Dyderski ◽  
Anna K. Gdula ◽  
Andrzej M. Jagodziński
Keyword(s):  
Nature Reserve ◽  
Propagule Pressure ◽  
Woody Species ◽  
Middle Part ◽  
Peat Bog ◽  
Habitat Conditions ◽  
Wetland Ecosystems ◽  
Rate Of Succession ◽  
Herb Species ◽  
Better Than

Abstract One of the most important threats for open peat bog ecosystems is encroachment of woody species, which causes transformation of habitat conditions and leads to retreat of specialised species. Drainage increases the rate of succession. The aim of study is the assessment of human-accelerated succession in a transitional bog. The study was conducted in ‘Mszar Bogdaniec’ nature reserve (W Poland). The structure of vegetation and tree stands was described and compared using ordination methods. Near the peat bog border, tree stands of Betula pubescens developed. Towards the middle part of the peat bog, the number, cover and height of trees decreased. The central part of the peat bog was covered by Sphagno recurvi–Eriophoretum vaginati in dryer parts and Sphagno recurvi–Eriophoretum angustifolii in wetter parts. The study showed that the successional sequence in these conditions differs from the classical bog succession scheme. Despite high propagule pressure of Pinus sylvestris, the most important woody species was B. pubescens, which performed better than other species. Erechtites hieracifolia, an alien invasive herb species, which previously was rarely recorded in bogs, appeared when the bog was dried by drainage. In this study, it reached high frequency and abundance, which shows that it may be a next serious threat to disturbed wetland ecosystems.

scholarly journals Changes in the Diversity of Dry Calcareous Grasslands After Abandonment of Traditional Management in Devínska Kobyla National Nature Reserve (Southwestern Slovakia, Central Europe)

2020 ◽  
Vol 39 (2) ◽  
pp. 101-115
Author(s):  
Alena Rendeková ◽  
Ján Miškovic ◽  
Karol Mičieta ◽  
Martina Michalová ◽  
Mariana Eliašová ◽  
...  
Keyword(s):  
Species Richness ◽  
Nature Reserve ◽  
Woody Species ◽  
Wiener Index ◽  
Species Evenness ◽  
Ellenberg Indicator Values ◽  
Indicator Values ◽  
Traditional Management ◽  
Calcareous Grasslands ◽  
The Past

AbstractThis study is focused on the evaluation of the values of the diversity indices of semi-natural dry calcareous grasslands of the Festuco-Brometea class in the area of Devínska Kobyla National Nature Reserve 50 years after abandonment of traditional management (grazing and mowing). The values of the species richness, the Shannon–Wiener index of diversity, the Simpson index, and Pielou’s measure of species evenness in the communities in the old and recent data, and the values of the environmental variables based on the Ellenberg indicator values of species were analyzed. For most of these analyses, we used Kruskal–Wallis in R 3.5.1. Compared to the past, we have recorded a significant lower values of the species richness, biodiversity, and species evenness in some communities. In some communities, no significant changes were recorded. Only in one community—Poo badensis-Festucetum pallentis, the higher values of Shannon–Wiener index was recorded compared to the past. The analysis of the Ellenberg indicator values revealed a statistically significant higher Ellenberg indicator values for moisture and nutrients and lower values for light in more recent period compared to the old period. The recorded results could be caused by the changes in the management after the year 1965, after abandonment of grazing and the gradual overgrowing by woody species took place in the area. The frequency of occurrence of some woody species (e.g., Populus alba, P. nigra, and Robinia pseudoacacia) in some communities increased compared to the past.

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