scholarly journals Declines in populations of Salix caprea L.during forest regeneration after strong herbivore pressure

2014 ◽  
Vol 66 (1) ◽  
pp. 87-109 ◽  
Author(s):  
Janusz B. Faliński
Keyword(s):  
National Park ◽  
Good Condition ◽  
Permanent Plots ◽  
Complete Disappearance ◽  
Pioneer Species ◽  
Forest Communities ◽  
Large Herbivores ◽  
Salix Caprea ◽  
Sex Structure ◽  
Białowieża National Park

Communities of broadleaved forest subject to strong pressure from large herbivores underwent degeneration. The relief of this pressure led to regeneration of the community, in which an important role was played by the sallow <em>Salix caprea</em> and other light-seeded pioneer species of tree (<em>Populus tremula</em>, <em>Betula pendula</em> and <em>B. pubescens</em>). Regeneration involving <em>Salix caprea</em> proceeded following the conservatorial protection of the degenerate stands in a reserve and later in Białowieża National Park. The emergence and development of the population of <em>Salix caprea</em> proceeded following the invasion of spruce, which coincided with the period of enhanced animal pressure on broadleaved forest. <em>Salix caprea</em> filled all the gaps in the tree stand arising as a result of the destruction of trees and undergrowth by herbivores (in the years 1892-1915). It also appeared en masse on old, at that time unforested, clearings and felled areas. In these places, <em>Salix caprea</em> created very abundant populations, with particular trees being in good condition, with a habit typical of forest trees and attaining considerable heights. The majority of trees were 50-60 years old at the time of death, although individuals reached 74 years of age. The process of extinction of the sallow population - observed over 19 years on permanent plots and fixed trees - proceeded very quickly, especially in the first decade of observation. It led to the almost complete disappearance of sallow for the forest communities of Białowieża National Park. The death of individual trees is preceded by impairment of their health and reduced annual increments in the 4-9 last years of life. The extinction of the population is associated with the loss of its primary phenological differentiation and with a change in the sex structure of the population from a prevalence of female trees to a near even distribution of the two sexes. The development of the populations of permanent constituents of the forest (<em>Carpinus betulus</em>, <em>Tilia cordata</em>, <em>Acer platanoides</em> and <em>Ulmus glabra</em>) under the canopy of light-seeded trees, and the non-creation of a new generation of pioneer species points to the imminent end of the process of regeneration in the forest communities of Białowieża National Park.

scholarly journals Macromycetes of oak-hornbeam forests in the Białowieża National Park - monitoring studies

2014 ◽  
Vol 33 (2) ◽  
pp. 171-189 ◽  
Author(s):  
Alina Skirgiełło
Keyword(s):  
International Cooperation ◽  
Mycorrhizal Fungi ◽  
National Park ◽  
Permanent Plots ◽  
Oak Forests ◽  
Ecological Groups ◽  
Plant Association ◽  
Multiple Signals ◽  
Białowieża National Park ◽  
European Oak

Mycosociological observations were carried out between 1994-1996 on permanent plots within a <i>Tilio-Carpinetum</i> association in the Białowieża National Park. The project was carried out with international cooperation within the "Mycological monitoring in European oak forests" programme which was a result of multiple signals concerning the disappearance of oaks in our continent. Almost 40 years before mycosociological research in the same plant association and at the same plots were carried out. Studies were mainly concerned with analysing the terrestrial macromycetes, predominantly <i>Boletales</i> and <i>Agaricales</i>. They analysed the occurrence of saprotrophic and mycorrhizal fungi. Totaly 215 species from the above listed ecological groups, but there were only 34 species common to both studies. Dominating species within the mycorrhizal group were found.

scholarly journals Macromycetes in forest associations of the Świętokrzyski National Park

2014 ◽  
Vol 14 (1-2) ◽  
pp. 163-191 ◽  
Author(s):  
Maria Lisiewska
Keyword(s):  
National Park ◽  
Permanent Plots ◽  
Atmospheric Conditions ◽  
Forest Communities ◽  
Świętokrzyski National Park ◽  
Seasonal Aspects

The investigations on the role of macromycetes in various forest communities of the Świętokrzyski National ark were performed in the years 1964-1968. Fruit bodies growing on the soil, in the litter and on wood were studied on 13 permanent plots. Attention was paid to effects of atmospheric conditions on the fruiting of fungi and to the seasonal aspects of macromycetes.

scholarly journals Marasmius and allied genera in forest communities of the Białowieża National Park

2014 ◽  
Vol 29 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Maria Lisiewska
Keyword(s):  
National Park ◽  
Forest Communities ◽  
Białowieża National Park

Distribution of 13 species of <i>Marasmius</i> and allied genera on a permanent research plot in different forest communities is demonstraled on maps. The following species were taken into account: <i>Marasmius androsaceus, M. bulliardii, M. chordalis, M. cohaerens, M. epiphyllus, M. lupuletorum, M. recubans, M. rotula, M. scordonius, M. splachnoides, M. wynnei, Marasmiellus ramealis</i> and <i>Micromphale perforans.

scholarly journals Population structure of Alnus jorullensis, a species used as firewood by five rural communities in a natural protected area of Mexico

2020 ◽  
Vol 98 (2) ◽  
pp. 238-247
Author(s):  
Carla Leticia López-Sánchez ◽  
Beatriz Bolívar-Cimé ◽  
Armando Aparicio-Rentería ◽  
Héctor Viveros-Viveros
Keyword(s):  
Population Structure ◽  
Rural Communities ◽  
Population Density ◽  
Protected Area ◽  
National Park ◽  
Permanent Plots ◽  
Pioneer Species ◽  
Basal Diameter ◽  
Breast Height ◽  
Standing Trees

Background: Ilite (Alnus jorullensis) is a very important pioneer species for the regeneration of temperate forests but also the source of fuel for the inhabitants of the Cofre de Perote National Park in Veracruz, Mexico. Questions: How much ilite is consumed by families in the Cofre de Perote National Park? What type of population structure is exhibited by Alnus jorullensis? Are there differences in population structure of this species between years? What is the diameter of the individuals extracted for firewood? Study site and dates: The population structure of ilite was evaluated during April 2016 and April 2017 in five localities of the Cofre de Perote National Park. Methods: Eighty families in these localities were interviewed about the use of firewood. Eighteen permanent plots of 20 × 50 m were established in order to record total height and diameter at breast height (130 cm) of standing trees of A. jorullensis and the basal diameter of its stumps. Results: Families in the study area indicated that they use in average 2 loads of ilite as firewood per week and extract adult individuals. Population density of ilite decreased from 2016 to 2017, in both years juvenile individuals were predominant, with a low presence of seedlings. Population structure did not differ between years. The basal diameters of stumps measured between 6 and 214 cm. Conclusions: Extraction of A. jorullensis did not change its population structure between years, however local inhabitants perceive that this activity and clandestine logging are affecting their availability.

scholarly journals What is the use of the research carried out on the permanent plots in the Białowieża National Park?

2016 ◽  
Vol 77 (4) ◽  
pp. 296-301
Author(s):  
Andrzej Bobiec
Keyword(s):  
National Park ◽  
Methodological Approach ◽  
Data Interpretation ◽  
Permanent Plots ◽  
Soil Conditions ◽  
Steady Increase ◽  
Initial State ◽  
Forestry Sector ◽  
Białowieża National Park ◽  
Set Up

Abstract The purpose of the strictly protected area of the Białowieża National Park (BNP) established in early 1900s, was to protect a compact block of the Białowieża forest from any direct human influence and activity. Its founders considered it a ‘laboratory of nature’ In 1936, five rectangular plots with a total area of 15.5 ha (ca. 0.3% of the BNP) were set up for regular monitoring of stand development with regards to the initial state and variability of soil conditions. During the first 76 years of the project, a steady increase in the proportion of hornbeam and lime tree at the expense of shade-intolerant species was observed. This trend has been interpreted by the researchers involved in the monitoring of the permanent BNP plots to constitute a biodiversitythreatening development caused by preservation efforts. Such an interpretation has been widely incorporated in the public debate by political authorities and the forestry sector. In this critical article I challenge the major arguments presented by the key expert in silviculture, Prof. B. Brzeziecki. My criticism is directed at the methodological approach as well as at the data interpretation.

Managing rivers for conservation and ecotourism in the Kruger National Park

1995 ◽  
Vol 32 (5-6) ◽  
pp. 227-233 ◽  
Author(s):  
F. J. Venter ◽  
A. R. Deacon
Keyword(s):  
National Park ◽  
Good Condition ◽  
Kruger National Park ◽  
Rapid Expansion ◽  
Natural Environments ◽  
The West ◽  
The Past ◽  
Management Actions ◽  
Flow Through ◽  
Three Rivers

Six major rivers flow through the Kruger National Park (KNP). All these rivers originate outside and to the west of the KNP and are highly utilized. They are crucially important for the conservation of the unique natural environments of the KNP. The human population growth in the Lowveld during the past two decades brought with it the rapid expansion of irrigation farming, exotic afforestation and land grazed by domestic stock, as well as the establishment of large towns, mines, dams and industries. Along with these developments came overgrazing, erosion, over-utilization and pollution of rivers, as well as clearing of indigenous forests from large areas outside the borders of the KNP. Over-utilization of the rivers which ultimately flow through the KNP poses one of the most serious challenges to the KNP's management. This paper gives the background to the development in the catchments and highlights the problems which these have caused for the KNP. Management actions which have been taken as well as their results are discussed and solutions to certain problems proposed. Three rivers, namely the Letaba, Olifants and Sabie are respectively described as examples of an over-utilized river, a polluted river and a river which is still in a fairly good condition.

scholarly journals Structure, Diversity, and Environmental Determinants of High-Latitude Threatened Conifer Forests

Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 775
Author(s):  
Carlos Esse ◽  
Francisco Correa-Araneda ◽  
Cristian Acuña ◽  
Rodrigo Santander-Massa ◽  
Patricio De Los Ríos-Escalante ◽  
...  
Keyword(s):  
Water Table ◽  
Environmental Variables ◽  
National Park ◽  
High Water ◽  
Forest Communities ◽  
Competitive Effect ◽  
Forest Patches ◽  
Last Glaciation ◽  
The World ◽  
Local Topography

Pilgerodendron uviferum (D. Don) Florin is an endemic, threatened conifer that grows in South America. In the sub-Antarctic territory, one of the most isolated places in the world, some forest patches remain untouched since the last glaciation. In this study, we analyze the tree structure and tree diversity and characterize the environmental conditions where P. uviferum-dominated stands develop within the Magellanic islands in Kawésqar National Park, Chile. An environmental matrix using the databases WorldClim and SoilGrids and local topography variables was used to identify the main environmental variables that explain the P. uviferum-dominated stands. PCA was used to reduce the environmental variables, and PERMANOVA and nMDS were used to evaluate differences among forest communities. The results show that two forest communities are present within the Magellanic islands. Both forest communities share the fact that they can persist over time due to the high water table that limits the competitive effect from other tree species less tolerant to high soil water table and organic matter. Our results contribute to knowledge of the species’ environmental preference and design conservation programs.

scholarly journals Vegetation structure and floristic composition of tree species in the habitat of Scaphium macropodum in Gunung Leuser National Park, Sumatra, Indonesia

2020 ◽  
Vol 21 (7) ◽  
Author(s):  
ARIDA SUSILOWATI ◽  
DENI ELFIATI ◽  
HENTI HENDALSTUTI RACHMAT ◽  
KUSUMADEWI SRI YULITA ◽  
ADI NURUL HADI ◽  
...  
Keyword(s):  
Tree Species ◽  
Vegetation Structure ◽  
National Park ◽  
Diversity Index ◽  
Good Condition ◽  
Floristic Composition ◽  
Line Transect ◽  
Growth Stages ◽  
Limited Information ◽  
Wiener Diversity Index

Abstract. Susilowati A, Elfiati D, Rachmat HH, Yulita KS, Hadi AN, Kusuma YS, Batu SAL. 2020. Vegetation structure and floristic composition of tree species in the habitat of Scaphium macropodum in Gunung Leuser National Park, Sumatra, Indonesia. Biodiversitas 21: 3025-3033. Scaphium macropodum (Miq.) Beumee Ex K Heyne is a member of Malvaceae tree species and globally recognized as malva nut and locally known as ‘kembang semangkok’, ‘tempayang’, ‘merpayang’ or ‘kepayang’. The nut of S. macropodum has many benefits for medicinal purposes, yet destructive extraction of this tree species has led them to extinction. Among its natural distribution in Indonesia, North Sumatra Province, Indonesia is known as its original range, but there is limited information about the existence of this species. This study aimed to determine the vegetation structure of some tree species in the habitat of S. macropodum in Sikundur, Gunung Leuser National Park, Sumatra, Indonesia. Purposive sampling technique was employed by creating line transect at some forest areas where the population of S. macropodum is known to grow naturally. Four line transects with each transect consisting of five plots with nested plots within were established to record data at four growth stages, resulting in 80 plots in total. The results showed that the Important Value Index (IVI) of S. macropodum within the floristic community at the studied area was 21.98, 13.85, 27.30, and 39.60 for tree, pole, sapling, and seedlings stages, respectively. The Shannon-Wiener Diversity Index (H) were 3.80, 3.70, 3.06 and 2.45, Index of evenness (E) are 0.94, 0.92, 0.86, 0.77 and the Index of Richness (R) are 11.76, 10.73, 6.59, 4.10 for tree, pole, sapling, and seedlings stages. This result suggests that the natural population of S. macropodum in Sikundur forest was still in good condition at all stages from tree to seedling.

scholarly journals Characteristics of General Soils, Natural Saltlicks and Artificial Saltlicks for Wild Asian Elephants (Elephas Maximus) Conservation in the Western Forests of Thailand

2021 ◽  
Author(s):  
Rattanawat Chaiyarat ◽  
Salisa Kanthachompoo ◽  
Nikorn Thongthip ◽  
Monthira Yuttitham
Keyword(s):  
National Park ◽  
Natural Forest ◽  
Elephas Maximus ◽  
Chemical Compositions ◽  
Wildlife Sanctuary ◽  
Primary Target ◽  
Wildlife Health ◽  
Large Herbivores ◽  
Key Resources ◽  
Keystone Resource

Abstract Saltlicks are a keystone resource of wildlife. This study aimed to compare the characteristics among general soil, natural saltlicks and artificial saltlicks in the natural forest of Salakphra Wildlife Sanctuary (SWS) and restoration habitat for elephant (Elephas maximus) in Kui Buri National Park (KNP), western Thailand. Twenty general soils, 33 natural and 35 artificial saltlicks were analyzed. The chemical compositions in natural saltlicks were not consistent. The K, Mg, Fe and Cu in natural saltlicks were higher than artificial saltlicks in both areas. The Ca and Zn in artificial saltlicks in SES were higher than natural saltlicks of KNP. The salinity in artificial saltlicks was highest and higher than in natural saltlicks in both areas and can provide supplemental Na, thereby increasing salinity in both areas. The artificial saltlicks cannot provide Ca, K, Mg, Fe and Cu when compared to natural saltlicks that can provide a primary target for elephants at these sites. The findings have consequences for conservation of elephants and other large herbivores by supplementing essential macro- and micro-nutrients in artificial saltlicks. The key resources can provide information to help maintain the wildlife health and fecundity of the region.

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