scholarly journals Early Spring Flora of the Sub-Pannonic Steppic Grassland (NATURA 2000 Site) in Bilje, Northeast Croatia

2016 ◽  
Vol 75 (2) ◽  
pp. 157-163 ◽  
Author(s):  
Tanja Žuna Pfeiffer ◽  
Dubravka Špoljarić Maronić ◽  
Vanda Zahirović ◽  
Filip Stević ◽  
Milorad Zjalić ◽  
...  
Keyword(s):  
Plant Species ◽  
Invasive Plant ◽  
Natura 2000 ◽  
Life Forms ◽  
Early Spring ◽  
Critically Endangered ◽  
Management Tools ◽  
Plant Life Forms ◽  
Central Asian ◽  
Natura 2000 Site

Abstract The diversity of early spring vascular flora was studied in the Sub-Pannonic steppic grassland in the village of Bilje, north eastern Croatia. In all, 109 plant taxa within 35 families were found. The highest number of taxa belongs to the families Poaceae, Fabaceae, Asteraceae, Caryophyllaceae, Lamiaceae and Rosaceae. Specific habitat conditions, characterized by moderately wet and moderately acidic soil with intermediate fertility and the effects of the continental climate favour the development of different plant life forms. Out of the total recorded plant taxa, hemicryptophytes make up 59.6%, followed by therophytes (22.0%) and geophytes (13.8%). Chorological analysis shows that the most numerous are plants of Eurasian (33.9%), Pontic-Central-Asian (21.1%) and Central European (21.1%) floral elements. According to their status in the Red List, three critically endangered (CR), one vulnerable (VU) and three nearly threatened (NT) plant species were found. Altogether, the steppe-like grassland in Bilje is a unique habitat rich in valuable plants of the Croatian flora, including the critically endangered Doronicum hungaricum, therefore it is of great importance to preserve it. Important management tools include mowing and controlling the spreading of cultivated and invasive plant species.

scholarly journals Terrestrial and aquatic flora along a mesotrophic lake shore remaining under increasing human impact: a case study of Lake Powidzkie (Poland)

2010 ◽  
Vol 17 (1) ◽  
pp. 73-90
Author(s):  
Wojciech Stachnowicz
Keyword(s):  
Alien Species ◽  
Human Impact ◽  
Natura 2000 ◽  
Life Forms ◽  
Lake Shore ◽  
Mesotrophic Lake ◽  
Aquatic Flora ◽  
Impatiens Parviflora ◽  
Natura 2000 Site

Terrestrial and aquatic flora along a mesotrophic lake shore remaining under increasing human impact: a case study of Lake Powidzkie (Poland) Floristical investigations were carried out in 2009 in both terrestrial and littoral zones along the NW shore of the mesotrophic Lake Powidzkie (a Natura 2000 site: PLH300026). The results comprise: a general comparison of aquatic vs. terrestrial species richness; a census of 296 species of vascular plants and 7 species of charophytes; the taxonomical, biological (life forms) and geographical-historical (native vs. alien taxa) structure of vascular flora. Distribution of nationally and regionally threatened and legally protected species is presented on maps which illustrate that most of these taxa are concentrated in Lake Powidzkie and in its neighbourhood. The ongoing synanthropization of the flora is assessed and discussed considering localities of chosen alien species and their occurrence within natural plant communities: 21 of 27 aliens were recorded at least once in natural vegetation, whereas 4 of them (Aster lanceolatus, Elodea canadensis, Impatiens parviflora and Rhus typhina) formed their own, xenospontaneous communities. The main conclusion is that while the area still abounds in regionally valuable components of native biodiversity, it simultaneously is more and more threatened by increasing anthropopressure, which has already been manifested by the presence of many potentially invasive alien species.

scholarly journals Variation and adaptation of leaf water content among species, communities, and biomes

2021 ◽  
Vol 16 (12) ◽  
pp. 124038
Author(s):  
Ruomeng Wang ◽  
Nianpeng He ◽  
Shenggong Li ◽  
Li Xu ◽  
Mingxu Li
Keyword(s):  
Water Content ◽  
Plant Species ◽  
Plant Communities ◽  
Cost Effective ◽  
Terrestrial Ecosystems ◽  
Life Forms ◽  
Systematic Investigation ◽  
Leaf Water ◽  
Leaf Water Content ◽  
Plant Life Forms

Abstract Leaf water content (LWC) is essential for the physiological activities in plants, but its spatial variation and the underlying mechanisms in natural plant communities are unclear. In this study, we measured the LWC of 5641 plant species from 72 natural communities in China, covering most terrestrial ecosystems, to answer these questions. Our results showed that LWC, on average, was 0.690 g g–1, and was significantly higher in forests and deserts than in grasslands. LWC was significantly different among different plant life forms, and ranked on averages in the following order: herbs > shrubs > trees. Interestingly, LWC decreased with increasing humidity and increased in dry environments. Furthermore, the variations of LWC in plant communities were higher in arid areas and those species with lower LWC in a plant community were more sensitive to changing environments. These results demonstrated the adaptations of plants to water regime in their habitats. Although, phylogeny has no significant effect on LWC, plant species both in forests and grasslands evolve toward higher LWC. Variations of LWC from species to community to biome represent the cost-effective strategy of plants, where plant species in drier environment require higher input to keep higher LWC to balance water availability and heat regulation. This systematic investigation fills the gaps on how LWC varies spatially and clarifies the different adaptation mechanisms regulating LWC across scales.

scholarly journals The occurrence of ladybells (Adenophora liliifolia) in border meadow Drahos (Drahoše) near Hollóháza (NE Hungary) and Skároš (SE Slovakia)

2021 ◽  
Author(s):  
Tünde Farkas
Keyword(s):  
Plant Species ◽  
Natura 2000 ◽  
Habitats Directive ◽  
Glacial Relict ◽  
Natura 2000 Site ◽  
Number Of Individuals ◽  
The Eu

The ladybells (Adenophora liliifolia (L.) Besser) is a glacial relict plant species and is endangered throughout Europe. The species is strictly protected in Hungary and listed in the Habitats Directive of the EU. It is a designating species of the HUBN20085 Északi-Zempléni-hegység Natura 2000 site in Hungary. The occurrence of the species is limited to very few localities both in Hungary and Slovakia. This study was undertaken to characterize the habitats of ladybells from a phytosociological perspective and analyse the structure of its population in Drahos (Drahoše) meadow. Two relevés were sampled, one at each side of the border. The number of individuals was recorded, and selected quantitative variables of the stem, leaves, and inflorescence of each individual were evaluated during eight years of the survey.

scholarly journals Analysis and distributional patterns of the invasive flora in a protected mountain area - a case study of Medvednica Nature Park (Croatia)

2011 ◽  
Vol 79 (4) ◽  
pp. 285-294 ◽  
Author(s):  
Nina Vuković ◽  
Anita Bernardić ◽  
Toni Nikolić ◽  
Vladimir Hršak ◽  
Miško Plazibat ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Plant Species ◽  
Invasive Plants ◽  
Invasive Plant ◽  
Life Forms ◽  
Multiple Regression Model ◽  
Mountain Area ◽  
Widespread Species ◽  
Invasive Flora ◽  
Nature Park

In this paper we have analysed invasive flora of Medvednica Nature Park, Croatia with respect to their origins, life forms, systematic positions, types of seed dispersal, Ellenberg indicator values and spatial distributions using MTB 1/64 grid units for analyses. A total of 27 invasive plant species, belonging to 14 families, were recorded with <em>Asteraceae</em> being the most frequently occurring family. Therophytes were the most common life form, as is generally true of Croatian invasive plants; however, hemicryptophytes and geophytes were more frequent in Medvednica. Here, invasive plants originated mainly from both Americas with slightly lower portion in comparison to all Croatian invasive plants, while contrary was the case when comparing those originated from Asia. The most widespread species was <em>Erigeron annuus</em> (L.) Pers., and the species with the lowest occurrence were <em>Chamomilla suaveolens</em> (Pursh.) Rydb and <em>Datura innoxia</em> Mill. A multiple regression model explains 44% of the spatial variability in the invasive plants data per MTB 1/64 unit, using the number of all recorded plant species, the average elevation and the lengths of paths and roads as estimators. The latter two variables also had the most influence on the ordination axes in analyses of the spatial distribution of seed dispersal types present in each MTB 1/64 unit. Anemochory was the most frequent type of seed dispersal.

scholarly journals THE SYNTAXONOMIC AND SPECIES DIVERSITY OF THE CLASS FESTUCO-BROMETEA BR.-BL. EX KLIKA & HADAČ 1944 IN THE AREA OF PREČKO POLJE

2021 ◽  
Vol 49 (2) ◽  
pp. 27-32
Author(s):  
Sabina Trakić ◽  
Emina Sarač-Mehić ◽  
Velida Durmić ◽  
Sedik Velić
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Biological Diversity ◽  
Conservation Status ◽  
Natura 2000 ◽  
Orchid Species ◽  
Natura 2000 Site ◽  
Mesobromion Erecti ◽  
High Degree ◽  
Rare Endemic

UDK: 581.55(497.6) The ecosystems of the class Festuco-Brometea in Bosnia and Herzegovina play an important role in the overall biological diversity. They are distinguished by a large number of vegetation units, as well as by significant number of rare, endemic or relict plant species. The study area, Prečko polje, covers 1.27  at 1100 m a.s.l., and takes place in the heart of mountain complex Treskavica-Visočica-Bjelašnica. We analised thermophylous meadows of Prečko polje after method of phytocoenological relevé. The class Festuco-Brometea in study area is being differentiated into the alliances Xerobromion erecti (with suballiance Fumano-Scabiosenion leucophyllae) and Mesobromion erecti (with suballiance Eu-Mesobromenion). In general, thermophylous meadows are characterized by high degree of species diversity. Moreover, within thermophylous meadows of Prečko polje we have identified nine species which are considered to have certain conservation status, according to the national and/or international legislation. Our study has shown that investigated area should be considered as potential Natura 2000 site for it is inhabited by a significant number of rare and/or endangered orchid species.

scholarly journals Plant Species Composition and Their Conspecific Association in Natural Tropical Rainforest, South Papua

2016 ◽  
Vol 8 (1) ◽  
pp. 33
Author(s):  
Agustinus Murdjoko ◽  
Djoko Marsono ◽  
Ronggo Sadono ◽  
Suwarno Hadisusanto
Keyword(s):  
Plant Species ◽  
Tropical Rainforest ◽  
Detrended Correspondence Analysis ◽  
Life Forms ◽  
Importance Value Index ◽  
Importance Value ◽  
Plant Life Forms ◽  
Plant Life ◽  
Lack Of Information ◽  
Dominant Plant Species

<p>Papua has so many wide lowland areas that cover high diversity in plant from life-forms.  In contrast, there is a lack of information concerning species diversity.  The objectives of the research were to describe species of plant life-forms and described conspecific associations between small individuals and large individuals in natural tropical rainforest, south Papua.  Then, 46 nested plots were placed systematically in natural tropical rainforest of Boven Digoel Regency, Papua.  Density, frequency, dominance and importance value index (IVI) were analyzed to describe plant diversity, while detrended correspondence analysis (DCA) was to describe conspecific association between small individuals and large individuals.  Results found 2040 individuals in this forest consisting 194 plant species.  Those are from pteridophytes, angiosperms and gymnosperms.  The plant life-forms are herbs, orchids, palms, pandans, shrubs, rattans, vines and trees in which of the plant life-forms, trees are the most abundant according to number of species.  In the dominant plant species, two types of conspecific association occurred between small individuals and large individuals.  Analysis of DCA revealed that three are large plant species grow along with their small individuals.  Another type is that small individuals grow far from their large individuals.</p>

scholarly journals Plant species diversity of the wet meadows under natural and anthropogenic interventions: The case of the Lakes Amvrakia and Ozeros (W. Greece)

2021 ◽  
Vol 49 (3) ◽  
pp. 12435
Author(s):  
Anastasios ZOTOS ◽  
Chariklia KOSMA ◽  
Vassilios TRIANTAFYLLIDIS ◽  
Ioanna KAKABOUKI ◽  
George KEHAYIAS ◽  
...  
Keyword(s):  
Plant Species ◽  
Habitat Preferences ◽  
Natura 2000 ◽  
Life Forms ◽  
Ecological Value ◽  
Habitat Types ◽  
Wet Meadow ◽  
Total N ◽  
Wet Meadows ◽  
Natural Lakes

The Lakes Amvrakia and Ozeros (W. Greece) belong to the western chain of Greek wetlands running along the coast of the Ionian Sea. They are both natural lakes belonging to the Natura 2000, Site of Community Importance (pSCI) and are characterized by high ecological value. Wet meadows are typical habitat types of these wetland ecosystems which are in contact with rural ecosystems which they interact with. Due to the high conservation value of these habitat types, in the framework of this study the flora of the wet meadows was recorded and a floristic analysis concerning chorology, life forms and habitat preferences was made. A total number of 152 taxa was found in the wet meadows of both lakes from which only 47 taxa were common. The families with the greatest number of species were Fabaceae (22 taxa), Asteraceae (14 taxa) and Poaceae (9 taxa) for the wet meadow vegetation of the Lake Amvrakia and Fabaceae, Poaceae (17 and 13 taxa, respectively) for the Lake Ozeros. In both lakes the prevalence of the Therophytes is evident, while the life forms of Chamephytes and Aquatics were absent from the Lake Amvrakia. From the results of the canonical correspondence analysis among species, sampling plots and selected environmental variables, a clear separation between species and sampling plots was found, presenting strong correlation with specific edaphic parameters (pH, CaCO3, EC, , Total N, SOC and ). These edaphic properties, as a result of natural and anthropogenic interventions, seem to play an important role in the wet meadows plant species distribution pattern.

scholarly journals A Dynamic Modeling Framework to Evaluate the Efficacy of Control Actions for a Woody Invasive Plant, Hakea sericea

2021 ◽  
Vol 9 ◽  
Author(s):  
Maria C. Morais ◽  
Berta Gonçalves ◽  
João A. Cabral
Keyword(s):  
Dynamic Modeling ◽  
Invasive Plant ◽  
Cost Effective ◽  
Natura 2000 ◽  
Global Changes ◽  
Modeling Framework ◽  
Fire Event ◽  
Control Actions ◽  
Practical Standpoint ◽  
Natura 2000 Site

Invasive alien species (IAS) are a significant component of global changes, causing severe economic and biodiversity damage. In this regard, Hakea sericea is one of the most widespread IAS throughout the Mediterranean region, including Portugal. The difficulty surrounding its management is exacerbated by post-fire situations, signifying a challenging task for managers. To assist in this effort, we used a system dynamic approach to model the population dynamics of Hakea sericea regarding the combinations of wildfire risk and control scenarios, which differ in periodicity, type of interventions, and cohort age. The ultimate goal of this study was to assess the effectiveness and costs of control efforts at reducing the abundance of this IAS. A Natura 2000 site Alvão/Marão (code PTCON0003) in northern Portugal, severely invaded by Hakea sericea, served as the study site. The modeling results demonstrate that Hakea sericea is likely to continue spreading if left uncontrolled. Although it may not be possible to ensure eradication of Hakea sericea from the study, repeated control actions aimed at the entire IAS population could be very effective in reducing its area. From a practical standpoint, removing all plants 24 months after each fire event followed by subsequent monitoring appears to be the most cost-effective strategy for managing Hakea sericea. Considering the modeling results, the dynamic modeling framework developed is a versatile, instructive tool that can support decision-making aimed at effective management of Hakea sericea.

scholarly journals New Evidence on the Distribution of the Highly Endangered Natrix natrix cypriaca and Implications for Its Conservation

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1077
Author(s):  
Savvas Zotos ◽  
Marilena Stamatiou ◽  
Andrea Naziri ◽  
Sotiris Meletiou ◽  
Stalo Demosthenous ◽  
...  
Keyword(s):  
Natura 2000 ◽  
Critically Endangered ◽  
Ephemeral Streams ◽  
New Localities ◽  
Conservation Actions ◽  
Complete Survey ◽  
Natura 2000 Site ◽  
Almost All ◽  
First Time ◽  
New Evidence

The critically endangered Cyprus grass snake (Natrix cypriaca) has been studied for the past 25 years. Although the need for a complete survey on the distribution of its population, outside the strict boundaries of the known mountainous localities, had been stressed, such an effort has not been conducted to date. In this study, we used a rapid survey approach to investigate possible sightings of the species upstream of the known distribution in the Troodos Mountains. We are presenting evidence from 13 sightings of the species that expand the previously known distribution in Cyprus by nearly 70%. This is the first time that new localities for the critically endangered N. n. cypriaca have been reported since the rediscovery of the species in 1992 and the extensive work that followed. Almost all new localities were discovered outside of the currently known species distribution, while individuals were found, for the first time, within the Natura 2000 site of Dasos Machaira (CY2000004) with indications of healthy populations in the area. New localities were recorded within watersheds of the Pediaios and Gialias Rivers, the first sightings outside of Serrachis watershed, indicating an even broader distribution of the species in the Troodos region. The importance of sparse springs within systems of ephemeral streams is highlighted as an exceptional niche for the population in the region. We are discussing the importance of our findings for the conservation of the species and propose targeted conservation actions that will highly improve connectivity of the populations in the region. We underline the necessity of expanding the research on this critically endangered subspecies, based on current findings, so as to fully comprehend its ecology and distribution range in the region.

Sign in / Sign up

Export Citation Format

Share Document