Epiphytic Bryophyte Communities of Forests Dominated by Alnus glutinosa (L.) Gaertner in Altindere Valley National Park (Trabzon, Turkey)

2021 ◽  
Vol 42 (11) ◽  
Author(s):  
Mevlüt Alataş ◽  
Nevzat Batan ◽  
Tülay Ezer ◽  
Turan Özdemır ◽  
Hüseyin Erata
2020 ◽  
pp. 157-168
Author(s):  
O. Bezrodnova ◽  
I. Tymochko ◽  
І. Solomakha ◽  
О. Chornobrov ◽  
H. Bondarenko

Forest typological and phytososological biodiversity of forest vegetation of Slobozhansky National Park is shown. The park covers 5244 hectares and includes the main parts of the run off valleys of the left-bank Merla River tributary, which belongs to the Vorskla River basin in the Kharkiv region. The main forest-forming species of the Slobozhansky National Nature Park are Pinus sylvestris L. (2779.3 hectares, 59.84%), Quercus robur L. (1451.8 hectares, 31.26%). Minor areas are occupied by Betula pendula Roth (138.3 hectares, 2.98%), Alnus glutinosa (L.) P. Gaertn. (122.5 hectares, 2.64%), Populus tremula L. (45.0 hectares, 0.97%) and other species. Areas covered with forest vegetation are represented by 16 edatopes: all trophotope and almost all hygrotopes, except very dry. Among the trophotopes subors (2015.2 hectares, 43.39%), oak wood (1504.4 hectares, 32.39%) and sugruds (1042.2 hectares, 22.44%) predominate, and the part of pine forest is insignificant (82.5 hectares, 1.78%). Among hygrotopes, the majority are with fresh conditions (4060.6 hectares, 87.43%), much smaller areas are dry (268.4 hectares, 5.78%), damp (184.3 hectares, 3.97%), moist (124.4 hectares, 2.68%) and wet (6.6 hectares, 0.14%) conditions. There are 17 types of forests in the Slobozhansky National Park areas covered with forest vegetation. Fresh oak-pine forest (1780.6 hectares, 38.35%), fresh maple-linden forest (1453.6 hectares, 31.30%), fresh linden-oak-pine sugrud (756.8 hectares, 16.30%) are dominated. Pinus sylvestris plantations grow in 10 forest types. The most common types of pine forests are fresh oak-pine and fresh linden-oak-pine sugrud. Quercus robur growth in 7 forest types, the most common of which is fresh maple-linden oak wood. The distribution of forest typological differences on the territory of the park of vascular plants rare species populations, which have different sozological status is analyzed. Annex I to Resolution 6 of the Berne Convention includes the following species: Dracocephalum ruyschiana L., Jurinea cyanoides (L.) Rchb., Iris pineticola Klokov. A number of species have the appropriate conservation status in Ukraine (Diphasiastrum complanatum (L.) Holub, Lycopodium annotinum L., Dracocephalum ruyschiana, Pulsatilla pratensis (L.) Mill. Sl, Allium ursinum L., Iris furcata M. Bieb., Iris pineticola, Fritillaria meleagris L., F. ruthenica Wikstr., Tulipa quercetorum Klokov & Zoz, Epipactis helleborine (L.) Crantz, Listera ovata (L.) R. Br., Neottia nidus-avis (L.) Rich., Platanthera bifolia (L.) Rich., Stipa borysthenica Klokov ex Prokudin) and 22 species at the regional range.


Author(s):  
Đorđije Milanović ◽  
Vladimir Stupar

The paper deals with the floristic and ecological diversity of the riparian forest and scrub communitiesof the Sutjeska National Park in SE Bosnia and Herzegovina. Watercourses of the NP are represented bymontane to submontane small rivers and creeks with fast-flowing water and frequent strong but shortfloods. This caused specific types of riverine forest vegetation to develop along their banks. Classificationand ordination methods of numerical analysis were applied on 42 relevés sampled in the field. Theclassification has revealed five ecologically interpretable relevé groups: (1) willow scrub of Salix eleagnosand S. caprea on fertile fine grained deposits; (2) forests of Alnus glutinosa and Salix alba also onfiner deposits; (3) narrow strips of Alnus glutinosa along the low banks of smaller streams; (4) narrowstrips of Alnus glutinosa along the steep banks of wider streams; (5) thermo-mesophilous scrub of Salixeleagnos and Ostrya carpinifolia on gravel beds. All five groups are floristically and ecologically welldistinguished. While groups 1 and 3 are similar to already described communities from Central Europe(Salicetum eleagno-purpureae and Stellario nemorum-Alnetum glutinosae, respectivelly), groups 4 and5 most probably present, up to date, undescribed associations. Group 2 is rather floristically and ecologicallyheterogeneous, and as such possess transitional character (between Salicion albae and Alnionincanae alliances). Ordination revealed ecological gradient from nutrient rich (groups 1 and 2) to lessnutrient rich communities (groups 4 and 5).


2019 ◽  
Vol 143 (7-8) ◽  
pp. 304-305
Author(s):  
Joso Vukelić ◽  
Marko Orešković ◽  
Ivana Plišo Vusić ◽  
Igor Poljak ◽  
Giacomo Mei ◽  
...  

The paper presents the first results of monitoring Natura 2000 habitat type 91E0*in the Plitvice Lakes National Park (Croatia). This type is represented in black alder forests (Alnus glutinosa /L./ Gaertn.) on an area of 44 ha. There, following the Braun-Blanquet method (1964), 25 plots were set up and relevés made, with 175 species of higher plant species recorded. Their environmental and sociological features suggest wetland and periodically flooded habitats with high ground water levels throughout the year, hence hygrophytes are decisive for the community structure. In addition, there is a moderate share of mesophilic species that are not present in the wetland black alder forests along the Sava and Drava rivers in the lowland part of northern Croatia. A comparison of black alder forests of the Plitvice Lakes NP with other black alder syntaxa in Croatia (Figure 2, Table 3) demonstrates that, together with other alder stands in the Dinaric region of Croatia, they belong to the group of wetland forests of the alliance Alnion glutinosae. Their differentiating species with regard to other syntaxa of the alliances Alnion glutinosae and Alnion incanae in Croatia are Fraxinus excelsior, Daphne mezereum, Viburnum lantana, Cirsium oleraceum, Crepis paludosa, Equisetum arvense, Paris quadrifolia, Thalictrum aquilegifolium, Valeriana dioica, Veratrum album, Acer pseudoplatanus, Chaerophyllum hirsutum, Lonicera xylosteum, Filipendula ulmaria, Knautia drymeia, Cruciata glabra. In addition, the researched stands in the Plitvice Lakes NP demonstrate individuality with regard to other stands of the Croatian Dinarides through the differentiating species of Phalaris arundinacea, Dactylorhiza maculata, Cirsium arvense, Primula vulgaris, Listera ovata, Carex acutiformis, C. paniculata, Succisa pratensis, Gentiana asclepiadea. Black alder forests in the Plitvice Lakes NP were created by successive processes in non-forest areas after their fall out of use (Figure 1). They grow by watercourses in karst depressions with occasionally stagnant surface water. Here the river courses are slowed down and distanced from the slopes and surrounding massifs, hence zonal forests do not have a dominant influence on the floral composition. The researched forests are classified in the class Alnetea glutinosae Br.-Bl. et Tx. 1943, order Alnetalia glutinosae Tx. 1937, and alliance Alnion glutinosae Malcuit 1929. They exhibit greatest similarity to the Central European association Carici acutiformis-Alnetum glutinosae. However, these results should not be generalized for the entire Dinaric region of Croatia. Detailed studies of black alder forests in the Dinarides are pending and their results will determine their nomenclature and syntaxonomic character.


2017 ◽  
Vol 59 (3) ◽  
pp. 189-197
Author(s):  
Łukasz Tyburski ◽  
Paweł Przybylski

Abstract During 2015 and 2016, in the Kampinos National Park (KNP), monitoring was conducted for the population of black alder (Alnus glutinosa (L.) Gaertn.), which occupies 12.5% of the tree stands in the park and, after the Scots pine (Pinus sylvestris L.), is the second most important species there. The aim of the observation was to obtain data about the current condition of alder in the National Park. Monitoring was carried out on eight plots designated throughout the park. Stands where alder was not the dominant species were omitted. On each plot, 20 trees were evaluated with a total of 160 plants assessed. The age of the tree stands analysed was 55–120 years. Monitoring was conducted by assessing the tree’s crowns, based on the methodology of forest monitoring implemented by the National Environmental Monitoring. Based on the analyses, it was found that the average defoliation of alder in 2015 reached 28.1%, and 34.4% in 2016, with the differences being statistically significant. Among 70% of the specimens, there was no discoloration of the assimilation apparatus. There were significant differences in defoliation between research plots located inside the park and near its borders, which can be associated with the influence of anthropogenic factors. Based on the monitoring, it was found that the state of alder crowns in KNP is a warning or average, depending on the year of observation. Therefore, it is necessary to continue monitoring the state of alder crowns in KNP. On the basis of the study results, it was also found that the biosocial structure of the researched tree stands is formed correctly. The dendrometric measurements conducted show that the average diameter of the trees analysed, at breast height was 30.5 cm with an average height of 25.5 m. To analyse the changes in height and breast height, dendrometric measurements must be repeated in 2020. Monitoring will be continued in the following years to observe the changes.


Author(s):  
M. R. Edwards ◽  
J. D. Mainwaring

Although the general ultrastructure of Cyanidium caldarium, an acidophilic, thermophilic alga of questionable taxonomic rank, has been extensively studied (see review of literature in reference 1), some peculiar ultrastructural features of the chloroplast of this alga have not been noted by other investigators.Cells were collected and prepared for thin sections at the Yellowstone National Park and were also grown in laboratory cultures (45-52°C; pH 2-5). Fixation (glutaraldehyde-osmium), dehydration (ethanol), and embedding (Epon 812) were accomplished by standard methods. Replicas of frozenfracture d- etched cells were obtained in a Balzers apparatus. In addition, cells were examined after disruption in a French Press.


2011 ◽  
Author(s):  
Levi Zitting ◽  
Britton Mace ◽  
Grant Corser
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