THE DISTRIBUTION AND STRUCTURE OF THE FOREST NATURA 2000 HABITATS FOUND IN THE SANATORIU AND ARSANCA FORESTS OF THE GOVORA RIVER BASIN

The thematic area  provided in this paper is situated in the Govora river basin, Vâlcea County. Within this study had been aimed the identification, description, diversity, ecological analysis and monitoring of the herbaceos and wooden plant communities, which belong to the Natura 2000 habitats and implicitly of the rare plant species, vulnerable, endemic whitin Sanatoriu and Arsanca Forest from the Govora river basin. In this area we identified the following plant communities: Quercetum petraeae-cerris Sóo (1957) 1969; Carpino-Fagetum  (sylvaticae) Paucă 1941; Scirpetum sylvatici Ralski 1931 emend. Schwich 1944; Petasitetum albae Dihoru 1975; Botriochloetum ischaemi (Kristiansen 1937) Pop 1977, Agrostietum stoloniferae (Ujvárosi 1941) Burduja et al. 1956; Calamagrostetum epigei Juraszek 1928. According to the targets of this research, a very important place we gave to the complex studies of the habitats: 91M0 Pannonian-Balkanic turkey oak sessile oak forests, 9170 Galio-Carpinetum oak-hornbeam forests; 91E0*Alluvial forests with Alnus glutinosa and Fraxinus excelsior (Alno-Padion, Alnion incanae, Salicion albae) ; 6430 Hydrophilous tall-herb fringe communities of plains and of the montane to alpine levels; 6440 Alluvial meadows of river valleys of the Cnidion dubii; 6240*Sub-pannonic steppic grasslands; 3150 Natural eutrophic lakes with Magnopotamion or Hydrocharition-type vegetation; 3160 Natural Dystrophic Lakes and Ponds (Gafta and Mountford coord, 2008). Considering the place where the studies had been located to, the  eco-pedo-climatic conditions and the anthropic term exerted we have considered that is necessary to develop some ecological studies for the plants communities for this habitats from this area

Trying to Understand Curriculum in the New Millennium

This paper is focused on presenting curriculum as a core issue of any educational reform, and as a very controversial concept. Two core concepts are underlined within curriculum definitions: learning situation and learning experience and their complementary relation is analyzed. The pyramidal model of curriculum is explained as a new approach. All this presentation aims to present a point of view about the thorny issue of curriculum and it tries to synthetically put together different approaches of the topic in modern and post-modern society. The necessity to rethink and enlarge the competence concept represents a conclusion which could be the basis of a further more detailed analysis of the curriculum development

NEW CHOROLOGICAL DATA FROM OLTENIA (ROMANIA) FOR APHANES AUSTRALIS RYDB. AND MONTIA FONTANA L. SUBSP. CHONDROSPERMA (FENZL) WALTERSSPECIES

In this paper we present the new chorological information from Oltenia (floristic province of Romania) for species Aphanes australis (Rosaceae) and Montia fontana subsp. chondrosperma (Portulacaceae), accompanied by some considerations from ecological and cenological points of view

Phytosociology, Distribution and Ecology of a Willow Community with False Tamarisk from the Lotru Valley (Romanian Carpathians)

The overall objective of this research was to contribute to a better knowledge of the phytosociology, ecology and distribution of the plant community formed by Myricaria germanica (false tamarisk) and the willow species Salix purpurea. This plant community has an important role in reducing the speed and strength of the water flow during floods. The description was based on cover‐abundance data for the faithful, dominant, characteristic and companion species of this plant community. A predominance of Myricaria germanica was observed when analysing the phytocoenoses, as the species finds in this area favourable ecological conditions for an abundant development. Salix purpurea presents a small abundance-dominance or in some phytocoenoses may even lack. The field research also revealed the excessive development of the species Calamagrostis pseudophragmites in some areas, related mostly with the effect of human activities. The anthropogenic disorders have induced modifications in the floristic physiognomy and compositions of the phytocoenoses, favouring also the invasion of opportunistic species such as Ambrosia artemisiifolia, Impatiens glandulifera, Phytolacca amearicana, Amorpha fruticosa, Erigeron annuus, which continuously extend in the studied territory. As Myricaria germanica and Salix purpurea phytocoenoses suffer a great decline throughout Europe, the habitat built by these species was declared of interest and was included in the Habitats Directive

CUCUJUS CINNABERINUS (SCOPOLI, 1774) (COLEOPTERA: CUCUJIDAE) IN ROSCI0045 CORIDORUL JIULUI, ROMANIA

The protection of the Natura 2000 species Cucujus cinnaberinus (Scopoli, 1774), protected by Romanian and European legislation, requires knowledge of distribution, threats and conservation status. In Romania the species is protected in only 9 Natura 2000 areas of the 442 SCI declared until 2021. All the protected areas in which the species is mentioned are located along the Carpathian Arch except ROSCI0135 Pădurea Bârnova – Repedea located in the Central Moldavian Plateau. The identification of the species in ROSCI0045 Coridorul Jiului brings new data about the distribution of the species and its conservation status. Observations on the species in larval stage were made by direct searches in specific habitats in the protected area. In the months of May, August and September 2022, Cucujus cinnaberinus was identified in several points along the protected area: Dăbuleni on poplar wood in the Danube River meadow, Foișor on poplar wood in the Jiului meadow, Bratovoești in ploplar wood of the former channels of the meanders Jiului River, Calopăr on ash wood from the Dâlga valley and Turburea on alder wood in the Gilortului meadow. The identification of Cucujus cinnaberinus Natura 2000 species requires further monitoring at the site and the implementation of appropriate protection and conservation measures

THE INFLUENCE OF POTENTILLA REPTANS EXTRACTS ON THE PHYSIOLOGY OF AGROPYRON REPENS L. PLANTS

During the experiments, the influence of the aqueous extracts obtained from the leaves of Potentilla reptans on the physiology of Agropyron repens was studied.Agropyron repens is a plant of spontaneous flora of Romania, growing on cultivated and uncultivated soils and is one of the most harmful plants in agriculture.In areas where Potentilla reptans grows, couch grass growth is inhibited; this demonstrates that this plant can have an allelopatic action on the couch grass. During these experiments, aqueous extracts from the leaves of Potentilla reptans were used in concentrations of 5 g / l, 10 g / l, 15 g / l and 20 g / l. These extracts were used in order to water the Agropyron repens plants .The experiments focused on the intensity of leaf photosynthesis, leaf respiration intensity, transpiration intensity, leaf water content and chlorophyll content.In the variant with a concentration of 5 g / l, photosynthesis had much lower values, and at 20 g / l the process was reduced by about 50%.Regarding the respiration process, there was an increase, but only at high concentrations of the extracts (15 and 20 g / l). At low concentrations, the differences from the control were undetectable.In the control variant, the intensity of leaf transpiration had the lowest value. In the other variants, it has been found to intensify the transpiration process in proportion to the increase in the concentration of the extracts

PHYTOSOCIOLOGICAL STUDY CONCERNING HABITATS WITH LIGULARIA SIBIRICA (L.) CASS. FROM THE SALONCA AND DELNITA RIVER BASINS, HARGHITA COUNTY, ROMAMIA

Ligularia sibirica (L.) Cass. is one of the most spectacular glacial relict species and rare species of Asteraceae family and one that suffered a significant decrease in Eurasia in the second half of the past century. L. sibirica dates from the Tardiglacial – early Postglacial period. It is of a great floristic, ecological, and phytogeographical importance (Paun and Popescu, 1971), being included in Annex II and IV of  the  Habitats  Directive and  in the IUCN  Red  List  of  Threatened  Species  as  DD (data deficient) (Bernhardt et al. 2011). According to the European Nature Information System species Natura 2000 data base (http://natura2000.eea.europa.eu), Ligularia sibirica is a species of community importance  reported  from  32  Natura  2000  Sites  from  Romania, including our study protected area – ROSCI0323 Ciucului Mountains. In the study area we identified a large number of well-developed populations with large number of individuals but varies depending on the type of habitat and of the variation eco-pedo-climatic conditions. The populations of L. sibirica in this area are stable and well preserved. Following research in this area in the summer of 2019 found that: the soil humidity, nitrogen availability, temperature, and lighting are the ecological factors influencing the morphological features of L. sibirica populations. In the Salonca and Delnita basins this species grows in the following habitats: 3220 - Alpine rivers and the herbaceous vegetation along their banks, CLAS. PAL.: 24.221 şi 24.222; 7110*  Active raised bogs, CLAS. PAL.: 51.1; 6430 - Hydrophilous tall-herb fringe communities of plains and of the montane to alpine levels, CLAS. PAL.: 37.7 şi 37.8; 6440 - Alluvial meadows of river valleys of the Cnidion dubii, CLAS. PAL.: 37.23; 6510 - Lowland hay meadows (Alopecurus pratensis, Sanguisorba officinalis)] CLAS. PAL.: 38.2; 91E0* - Alluvial forests with Alnus glutinosa and Fraxinus excelsior (Alno-Padion, Alnion incanae, Salicion albae), CLAS. PAL.: 44.3, 44.2 şi 44.13 and 9410 - Acidophilous Picea forests of the montane to alpine levels (Vaccinio-Piceetea), CLAS. PAL.: 42.21 up to 42.23, 42.25. (Mountford and Gafta, 2008; Niculescu, M., 2006