Search results for " grasslands"
showing 9 items of 29 documents
The Lygeo-Stipetea class in Sicily
2010
Basing on literature data and unpublished relevés from Sicily, a survey of the syntaxa belonging to the class Lygeo-Stipetea Rivas-Martínez 1978 is presented. This perennial vegetation is characterized by the dominance of big caespitose hemicryptophytes, and it is widely distributed in Sicily from the sea level up to 1500 m a.s.l. The class is represented in Sicily by two orders, floristically and ecologically well differentiated: Lygeo-Stipetalia, including the sole alliance Moricandio-Lygeion exclusively of clayey substrates, and Hyparrhenietalia hirtae, including five alliances (Hyparrhenion hirtae, Avenulo cincinnatae-Ampelodesmion mauritanici, Thero-Brachypodion ramosi, B…
Élaboration du plan de gestion de l’espace naturel sensible des versants de Vuillafans et Châteauvieux-les-Fossés
2014
The value of the “Espace Naturel Sensible des versants de Châteauvieux et Vuillafans” is based on a natural habitats mosaic that support an originality and a diversity of flora and entomological that we want to preserve. However, in dry grasslands which are habitats of the European community, we can see gradually the emergence of shrub and reforestation due to the difficult to mechanize hills and very fragmented private lands that favored the abandonment of agricultural practices on the slopes. To efficiently program the management of this area, a management plan, which is now a recognize tools for managers of natural areas, was written. To achieve the management plan objectives, the privat…
Dabiskie zālāji Vidzemes augstienes agroainavā: biodaudzveidība un tās saglabāšanas sociālekonomiskie aspekti
2015
Bakalaura darba „Dabiskie zālāji Vidzemes agroainavā: biodaudzveidība un tās saglabāšanas sociālekonomiskie aspekti” mērķis ir noskaidrot dabisko zālāju daudzveidību Vidzemes augstienē un tās saglabāšanas sociālekonomiskos faktorus. Visā Latvijas teritorijā dabisko zālāju platības samazinās, tomēr to saglabāšanai ir liela nozīme, jo dabiskajos zālājos ir ļoti augsta gan dzīvnieku, gan augu sugu daudzveidība. Dabiskie zālāji nespēj pastāvēt bez cilvēka klātbūtnes, tieši tāpēc ir svarīgi zināt iemeslus, kāpēc dabiskie zālāji tiek pamesti vai apsaimniekoti nepareizi. Dabisko zālāju biodaudzveidība Vidzemes augstienē samazinās, zemes īpašnieki novērtē dabas vērtību, bet, ņemot vērā šī brīža aps…
Functional ecology for evaluating and predicting the aptitude of permanent grassland to provide services
2013
National audience; Applying the principles of functional ecology helps better predict the services which can be provided by permanent grassland. Farming practices and environmental characteristics influence the functional composition of grassland. Functional plant types have a generic effect on forage services which can be assessed. 13 types of grassland composed of distinct functional types were defined based on 1,283 sample grassland fields located on 8 sites. This approach was validated by checking 8 Ellenberg indicator values (used to evaluate environmental characteristics and farming practices) against climatic data and descriptive data for farming practices. The interest of a function…
Biodiversity surveys of grassland and coastal habitats in 2021 as a documentation of pre-war status in southern Ukraine
2023
This paper presents two sampling-event datasets with occurrences of vascular plants, bryophytes and lichens collected in May-June 2021 in southern Ukraine. We aimed to collect high-quality biodiversity data in an understudied region and contribute it to international databases and networks. The study was carried out during the 15th Eurasian Dry Grassland Group (EDGG) Field Workshop in southern Ukraine and the Dark Diversity Network (DarkDivNet) sampling in the Kamianska Sich National Nature Park. By chance, these datasets were collected shortly before the major escalation of the Russian invasion in Ukraine. Surveyed areas in Kherson and Mykolaiv Regions, including established monitoring plo…
Contemporary spatial and environmental factors determine vascular plant species richness on highly fragmented meadows in Central Finland
2018
Context Habitat loss is a major threat to biodiversity. It can create temporal lags in decline of species in relation to destruction of habitat coverage. Plant species specialized in semi-natural grasslands, especially meadows, often express such extinction debt. Objectives We studied habitat loss and fragmentation of meadows and examined whether the changes in meadow coverage had caused an extinction debt on vascular plants. We also studied whether historical or present landscape patterns or contemporary environmental factors were more important determinants of species occurrence. Methods We surveyed the plant species assemblages of 12 grazed and 12 mown meadows in Central Finland and dete…
Plant-herbivorous beetle networks : molecular characterization of trophic ecology within a threatened steppic environment
2015
DNA barcoding facilitates many evolutionary and ecological studies, including the examination of the dietary diversity of herbivores. In this study, we present a survey of ecological associations between herbivorous beetles and host plants from seriously threatened European steppic grasslands. We determined host plants for the majority (65%) of steppic leaf beetles (55 species) and weevils (59) known from central Europe using two barcodes (trnL and rbcL) and two sequencing strategies (Sanger for mono/oligophagous species and Illumina for polyphagous taxa). To better understand the ecological associations between steppic beetles and their host plants, we tested the hypothesis that leaf beetl…
Mapping productivity and essential biophysical parameters of cultivated tropical grasslands from sentinel-2 imagery.
2020
Nitrogen (N) is the main nutrient element that maintains productivity in forages
Conservation of traditional rural biotopes in Finland : a social-ecological approach
2018
This research focuses on conservation of traditional rural biotopes, which are biodiverse meadows and wood-pastures that are dependent on management through grazing or mowing. These low-intensity management actions have become rare as a result of agricultural modernisation. I have utilised a social-ecological approach in order to seek for the most critical factors hindering conservation of traditional rural biotopes in Finland. I also explore practical solutions that have the potential to improve their conservation status. The coverage of traditional rural biotopes has faced severe habitat loss during the last 150 years. This has led to endangerment of several habitat types and species that…