Search results for "flora"
showing 9 items of 989 documents
Pyrus pedrottiana (Rosaceae), a new species from the Nebrodi Mountains (N-E Sicily)
2022
A new species of Pyrus for the dendroflora of Sicily is here described. It is Pyrus pedrottiana, actually considered endemic to the Nebrodi Mountains, a territory which includes the largest wooded area of the island with a high forest biodiversity.In the same area, P. vallis-demonis and P. ciancioi have also been described in recent times. The authors report diagnostic characters to distinguish the new taxon from the other two sympatric species.
Hieracium umbrosum subsp. abietinum (Asteraceae), a further example of amphi-Adriatic disjunction
2017
So far considered as endemic to Greece, Hieracium umbrosum subsp. abietinum is reported as new for the Italian flora. Its presence has been noted on the Pollino National Park (S Italy). Morphological, ecological and taxonomical notes are given. This discovery increases the list of taxa showing an amphi-Adriatic distribution.
First record of Sphaeralcea bonariensis (Cav.) Griseb. (Malvaceae) as a casual alien species in the Mediterranean area
2022
Sphaeralcea bonariensis (Cav.) Griseb. is here reported for the first time as alien species in Italy and in the Mediterranean area. It is a perennial shrub native to Southern America, where it is often considered a ruderal species frequent in cultivated areas. It was found in a population of a few individuals within Opuntia ficus-indica groves of Rocca Palumba territory (Western Sicily). Actually, due to short-term observational period and the low number of plants, Sphaeralcea bonariensis should be considered as a casual species in Italy. The ecological characteristics of the growing stand and the consistency of the population, as well as the possible causes of its introduction, are briefly…
Importazione massale di dati in Wikiplantbase: l'esperienza con Wikiplantbase #Sicilia
2019
Il progetto Wikiplantbase è stato avviato nel 2013 al fine di offrire un sistema dove caricare record floristici georeferenziati, liberamente accessibili via internet. Sino ad allora, infatti, esistevano un gran numero di banche dati online sulla nomenclatura, tassonomia, erbari, specie aliene, vegetazione, numeri cromosomici e sequenze di DNA, ma non vi era facile accesso ai dati floristici a grande dettaglio geografico. I record floristici costituiscono i dati primari sulla biodiversità utili per qualsiasi ricerca di biologia vegetale. Al fine di aumentare i dati sulla Sicilia disponibili in Wikiplantbase, si sono elaborati e standardizzati alcuni dei dati liberamente accessibili dal sito…
Evaluation of biocidal potential of some plant species from the Mediterranean wild flora
Essential oil crops for sustainable agriculture - A review
2009
Multifunctionality and diversification of farming systems, integration of agricultural practices both inter se and with the non-agricultural productive systems operating on the territory, biodiversity safeguards, and reduction in off-farm inputs, are key factors for all modern development strategies in agricultural areas. Such issues are valid worldwide, but are especially true in areas in which the cultivation of the more widespread and “classical” crops is constrained by factors of varying degree and importance. In Mediterranean areas, where many environmental and economic factors often reduce rural areas to marginal conditions, the search for new crop opportunities has become one of the …
New floristic data of alien vascular plants from Sicily
2019
New records of Commelina communis, Euphorbia hypericifolia, Melia azedarach, Nicotiana tabacum, and Xanthoceras sorbifolium are reported for the Sicilian flora.
Floras izplatības izmaiņas Kurzemes piejūras ciemos pēdējo 20 gadu laikā: Bērzciema piemērs
2015
Bakalaura darba „Floras izplatības izmaiņas Kurzemes piejūras ciemos pēdējo 20 gadu laikā: Bērzciema piemērs” mērķis ir apzināt floras sastāva un telpiskās izplatības izmaiņas Bērzciema apkārtnē pēdējo 20 gadu laikā un noskaidrot to ietekmējošos faktorus. Katrai sugai ir noteiktas prasības pēc vides apstākļiem, tādēļ floras izmaiņas ir netiešs informācijas avots par pārmaiņām apkārtējā vidē. Lai noskaidrotu, kā mainījusies Bērzciema apkārtnes flora pēdējo 20 gadu laikā un kas bijuši pārmaiņu virzītājspēki, analizēti divu floras uzskaišu rezultāti. Pirmā no tām notikusi 20.gs. 80.-90.gados, bet otrā – 2012.-2013.gadā. Apkopojot rezultātus, secināts, ka Bērzciema apkārtnē augu sugu skaits nav…
Invazīvie neofīti Latvijas florā: izplatība un dinamika
2009
ANOTĀCIJA Priede A. 2009. Invazīvie neofīti Latvijas florā: izplatība un dinamika. Promocijas darbs. Latvijas Universitāte, Rīga, 127 lpp. Pētījuma mērķis bija noskaidrot invazīvo neofītu izplatības dinamikas un vides faktoru kopsakarības Latvijā reģionālā kontekstā. Darba ietvaros analizēta neofītu izplatība un dinamika Latvijas mērogā un divās modeļteritorijās. Aprakstītas un klasificētas izplatītākās lakstaugu neofītu sabiedrības, kā arī, balstoties uz fitosocioloģiskajiem aprakstiem, novērtēta invazīvo neofītu ietekme uz augu sabiedrību sugu sastāvu. Sagatavotas dažāda mēroga izplatības kartes, un analizēta neofītu floras un izplatības dinamika un to ietekmējošie faktori. Izplatības kop…