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Iskalni niz: "avtor" (Polona Hafner) .

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Trajnostno gospodarjenje z gozdovi in trajnostna oskrba lesnopredelovalnih podjetij z lesom
Mitja Skudnik, Polona Hafner, 2021, predgovor, spremna beseda

Objavljeno v DiRROS: 18.12.2021; Ogledov: 323; Prenosov: 114
.pdf Celotno besedilo (46,36 KB)

3.
Stabilni izotopi v gozdnem ekosistemu - analizne metode in uporaba
Saša Zavadlav, Grega E. Voglar, Polona Hafner, Mitja Ferlan, Tom Levanič, 2016, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: stabilni izotopi, masna spektrometrija, laserska absorpcijska spektroskopija, EA-IRMS, OA-ICOS
Objavljeno v DiRROS: 03.11.2021; Ogledov: 324; Prenosov: 115
.pdf Celotno besedilo (1,29 MB)

4.
Environmental signals in Quercus robur L. tree-ring widths and [delta]13C
Polona Hafner, Jožica Gričar, Mitja Skudnik, Tom Levanič, 2015, objavljeni povzetek znanstvenega prispevka na konferenci

Objavljeno v DiRROS: 03.11.2021; Ogledov: 220; Prenosov: 88
.pdf Celotno besedilo (1,05 MB)

5.
Aktivni lastniki gozdov in njihov prispevek k prehodu v brezogljično družbo
Mitja Skudnik, Polona Hafner, 2021, predgovor, spremna beseda

Objavljeno v DiRROS: 26.10.2021; Ogledov: 332; Prenosov: 117
.pdf Celotno besedilo (423,00 KB)

6.
Climatic regulation of leaf and cambial phenology in Quercus pubescens : their interlinkage and impact on xylem and phloem conduits
Jožica Gričar, Jernej Jevšenak, Polona Hafner, Peter Prislan, Mitja Ferlan, Martina Lavrič, Dominik Vodnik, Klemen Eler, 2022, izvirni znanstveni članek

Povzetek: Increased frequency and severity of stressful events affects the growth patterns and functioning of trees which adjust their phenology to given conditions. Here, we analysed environmental effects (temperature, precipitation, VPD and SWC) on the timing of leaf phenology, seasonal stem radial growth patterns, and xylem and phloem anatomy of Quercus pubescens in the sub-Mediterranean in the period 2014%2019, when various adverse weather events occurred, i.e. spring drought in 2015, summer fire in 2016 and summer drought in 2017. Results showed that the timings of leaf and cambium phenology do not occur simultaneously in Q. pubescens, reflecting different environmental and internal constraints. Although year-to-year variability in the timings of leaf and cambial phenology exists, their chronological sequence is fairly fixed. Different effects of weather conditions on different stages of leaf development in spring were observed. Common climatic drivers (i.e., negative effect of hot and dry summers and a positive effect of increasing moisture availability in winter and summer) were found to affect the widths of xylem and phloem increments with more pronounced effect on late formed parts. A legacy effect of the timing of leaf and cambial phenology of the previous growing season on the timing of phenology of the following spring was confirmed. Rarely available phloem data permitted a comprehensive insight into the interlinkage of the timing of cambium and leaf phenology and adjustment strategies of vascular tissues in Mediterranean pubescent oak to various environmental constraints, including frequent extreme events (drought, fire). Our results suggest that predicted changes in autumn/winter and spring climatic conditions for this area could affect the timings of leaf and stem cambial phenology of Q. pubescens in the coming years, which would affect stem xylem and phloem structure and hydraulic properties, and ultimately its performance.
Ključne besede: pubescent oak, leaf development, radial growth, initial earlywood vessel, sieve tube, anatomy, cambial cell production, extreme weather events
Objavljeno v DiRROS: 06.09.2021; Ogledov: 441; Prenosov: 85
.pdf Celotno besedilo (7,00 MB)
Gradivo ima več datotek! Več...

7.
Upravljanje z mestnimi gozdovi za boljšo kakovost bivanja v mestih
Mitja Skudnik, Polona Hafner, 2021, predgovor, spremna beseda

Objavljeno v DiRROS: 02.08.2021; Ogledov: 533; Prenosov: 166
.pdf Celotno besedilo (45,01 KB)

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Želja po ponovni vzpostavitvi ravnovesja v okolju
Mitja Skudnik, Polona Hafner, 2021, predgovor, spremna beseda

Objavljeno v DiRROS: 17.05.2021; Ogledov: 532; Prenosov: 207
.pdf Celotno besedilo (44,36 KB)

10.
Poseganje v naravni razvoj gozdnih rezervatov?
Mitja Skudnik, Polona Hafner, 2021, predgovor, spremna beseda

Ključne besede: gozdni rezervati, pragozdovi, sanitarne sečnje, sprememba zakonodje
Objavljeno v DiRROS: 14.04.2021; Ogledov: 671; Prenosov: 254
.pdf Celotno besedilo (46,37 KB)

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