1,720,990 research outputs found
Interpopulations variability of Teucrium arduini L. (Lamiaceae) essential oil
Full text linkAnaliziran je kemijski sastav eteričnih ulja šest populacija endemske biljke dubčac arduini (Teucrium arduini L.) koje rastu na području Hrvatske plinskom kromatografijom-spektrometrijom masa radi dodatnog istraživanja varijabilnosti unutar populacije. Identificirano je ukupno 43 komponenata a glavnu skupinu čine seskviterpenski ugljikovodici (66,00-89,69%). Germakren D je glavni sastojak ulja dobivenog destilacijom biljaka ubranih na lokaciji Učka (30,51%) i na Biokovu (lokacije Vošac - 34,47% i Sveti Jure - 49,14%) dok je β-kariofilen najprisutnija komponenta eteričnog ulja dobivenog destilacijom biljaka ubranih na Velebitu (Šušanj - 32,09% i Veliki Vaganac - 40,13%) i Sniježnici (36,81%). Od ostalih komponenata najzastupljeniji su bili kariofilen oksid (1,17-13,42%), α-humulen (2,54-7,70%) i spatulenol (1,78-5,00%)
Novi lokaliteti vrsta Berberis croatica Horvat i Teucrium arduini L. na području Dinarida u Hrvatskoj
Full text linkNew localities of the endemic species Berberis croatica Horvat and Teucrium arduini l. in the northwestern and central Dinaric Mountains in Croatia are listed in this paper. Berberis croatica was found in the hinterland mountains of the city of Rij eka, in Gorski kotar (Mt Drgomalj), and on Mt Velebit and Mt Kamešnica. Teucrium arduini was observed in new localities on Mt Velebit, Mt Visoka, Bili Brig near Sinj, Mt Kamešnica, in Cetina River Canyon, on Mt Biokovo, and Brač Island. Information about new sites of B. croatica and T. arduini will be of help in future research of these endemic species, which is essential in ensuring their protectionU radu su navedeni novi, do sada neobjavljeni lokaliteti dviju endemičnih vrsta, hrvatske žutike (Berberis croatica Horvat) i Arduinova dubačca (Teucrium arduini L.) na području Dinarida u Hrvatskoj. Novi lokaliteti hrvatske žutike zabilježeni su na planinama u zaleđu grada Rijeke, u Gorskom kotaru (Drgomalj), na Velebitu i na Kamešnici. Arduinov dubačac pronađen je na novim lokalitetima na Velebitu, na planini Visoka, na Bilom Brigu u blizini Sinja, Kamešnici, u kanjonu rijeke Cetine, na Biokovu te na otoku Braču. Podaci o novim lokalitetima hrvatske žutike i Arduinova dubačca predstavljaju značajan doprinos budućim istraživanjima ovih vrsta, koja su potrebna za njihovu adekvatnu zaštitu, kao i za očuvanje biološke raznolikosti u Republici Hrvatskoj
MORPHO-ANATOMICAL DIFFERENTIATION OF THE BALKAN ENDEMIC SPECIES TEUCRIUM ARDUINI L. (LAMIACEAE)
No full textAbstract — Teucrium arduini L. is an endemic of the Mediteranean to sub-Mediterranean part of the Western Balkans. The ecological plasticity, i.e., inter-population differentiation, of the species Teucrium arduini was analyzed on the basis of morpho-anatomical variability of six populations from different types of vegetation, i.e., of rocky crevices, rocky ground, and a thermophilous forest in the eu-Mediterranean, sub-Mediterranean, and transitional sub-Mediterranean-Central-European climate zones. Univariant statistic analysis included 22 quantitative characters related to leaf and stem anatomy and morphology. In order to establish the variability and significance of morpho-anatomical differentiation, principal component analyses (PCA), multivariant analyses of variances (MANOVA), and discriminant components analysis (DCA) were done. The analyses of plants from these spatially separated populations confirmed that the species T. arduin
Morpho-anatomical differentiation of the Balkan endemic species Teucrium arduini L. (Lamiaceae)
No full textTeucrium arduini L. is an endemic of the Mediteranean to sub-Mediterranean part of the Western Balkans. The ecological plasticity, i.e., inter-population differentiation, of the species Teucrium arduini was analyzed on the basis of morpho-anatomical variability of six populations from different types of vegetation, i.e., of rocky crevices, rocky ground, and a thermophilous forest in the eu-Mediterranean, sub-Mediterranean, and transitional sub-Mediterranean-Central-European climate zones. Univariant statistic analysis included 22 quantitative characters related to leaf and stem anatomy and morphology. In order to establish the variability and significance of morpho-anatomical differentiation, principal component analyses (PCA), multivariant analyses of variances (MANOVA), and discriminant components analysis (DCA) were done. The analyses of plants from these spatially separated populations confirmed that the species T. arduini belongs to the category of xerophytes with malacophyllous leaves
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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