magistrsko delo
Martina Šuman (Avtor), Sonja Škornik (Mentor), Branko Bakan (Komentor)

Povzetek

Gozdovi predstavljajo glavni življenjski prostor za številne mahove, ki uspevajo na gozdnih tleh, kjer so okoljske razmere dovolj dobre za njihov obstoj. V naši raziskavi smo primerjali pestrost mahov na gozdnih poteh z zmerno motnjo in na stabilnih gozdnih tleh, kjer ni antropogenih motenj. Ugotavljali smo tudi povezavo med abiotskimi dejavniki in pojavljanjem določenih mahovnih tipov (akrokarpni/plevrokarpni/ostali) na različnih gozdnih tleh. Raziskavo smo opravili v manjšem mešanem bukovem gozdu v naselju Jurovski Dol (Slovenske Gorice, SV Slovenija). Za potrebe naše raziskave smo na terenu vzpostavili 50 trajnih popisnih ploskvic velikosti 50 cm x 200 cm, od tega je bilo 40 ploskvic poraslih z mahovno floro, 10 je bilo brez mahovne flore. Na popisnih ploskvicah smo skupno zabeležili 24 taksonov mahov, od tega smo 13 taksonov našli izključno na trajnih popisnih ploskvicah, ki so se nahajale vzdolž gozdnih poti. Na terenu smo merili tudi nekatere abiotske dejavnike (temperaturo tal, zraka in mahovne površine, vlago tal in mahovne površine, pH tal ter osvetljenost mahovne površine). Prav tako smo skozi obdobje 12 mesecev merili višino mahovne površine in višino stelje. Pridobljene podatke smo nato analizirali in izračunali povprečne vrednosti abiotskih dejavnikov, jih primerjali po popisnih ploskvicah. Uporabili smo tudi kompleksnejše multivariatne statistične metode oz. DCA analize za iskanje povezave med pojavljanjem in dominanco taksonov ter abiotskimi dejavniki. Ugotovili smo, da (kontrolne) ploskvice TKP41-50 brez prisotnosti mahov najbolj označujejo višje vrednosti za višino stelje in vlago prsti. Ploskvice TKP31-40 imajo v primerjavi z ostalimi ploskvicami višje vrednosti pH tal, prav tako so tukaj v povprečju mahovi najvišji. Vzorčne popisne ploskvice TVP1-30 pa so heterogene in so se razporedile vzdolž gradientov osvetljenosti, temperature tal, zraka, površine in pH tal ob mahovni površini. Ugotovili smo, da na popisnih ploskvicah vzdolž gozdnih poti prevladuje akrokarpni tip mahov, veliko je tudi predstavnikov višjih jetrenjakov (Jungermanniales). Na ploskvah z višjimi vrednostmi temperature zraka, tal in površine, pH tal ter osvetljenosti mahovne površine, se pojavljajo Diphyscium foliosum, Brachythecium sp., Rhizomnium punctatum, Plagiomnium rostratum, Hypnum cupressiforme, Thuidium tamariscinum, Plagiothecium undulatum. Ploskvice z višjimi vrednostmi za vlago zraka in tal označujejo vrste Dicranodontium denudatum, Pellia epiphylla, Bazzania trilobata, Bazzania trilobata, Pleurozium schreberi, Eurhynchium angustirete, Atrichum undulatum, Calypogeia arguta, Calypogeia fissa, Leucobryum glaucom in na ploskvicah, z višjimi mahovi se pojavljajo Eurhynchium angustirete, Pleurozium schreberi. Ti abiotski dejavniki vplivajo na pojavljanje in kolonizacijo mahov, vendar smo ugotovili, da je glavni dejavnik, ki vpliva na razraščanje mahov zasteljevanje oz. višina listne stelje, ki je omejitveni dejavnik.

Ključne besede

magistrska dela;mahovi (Bryophyta);abiotski dejavniki;plevrokarpni tip;listnati mahovi;jetrenjaki;metoda flotacije semen;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.09 - Magistrsko delo
Organizacija: UM FNM - Fakulteta za naravoslovje in matematiko
Založnik: [M. Šuman]
UDK: 582.321.1(4)(043.2)
COBISS: 24513032 Povezava se bo odprla v novem oknu
Št. ogledov: 598
Št. prenosov: 82
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: ǂThe ǂeffect of certain environmental factors on moss diversity and abundance in the colonization process of forest pathways in acidic Central European beech forests
Sekundarni povzetek: Forests represent the main habitat for many bryophytes that thrive on forest soils where the environmental conditions are good enough for their existence. In our study we compared the variety of bryophytes on the forest paths with moderate disturbance and on stable forest soils, without anthropogenic disturbance. We also examined the relationship between abiotic factors and the appearance of certain moss types (acrocarp/pleurocarp/ combined - liverworts) on various forest soils. The research was carried out in a small mixed beech forest in the settlement Jurovski Dol (Slovenske Gorice, SV Slovenia). We established 50 permanent plots (50 cm x 200 cm) in the forest, of which 40 had bryophyte flora and 10 were without moss flora. On permanent plots we confirmed 24 bryophyte taxa of which 13 taxa were found exclusively on permanent plots located along the forest paths. We measured some abiotic factors: soil, air and moss surface temperature, soil and moss surface moisture, pH level and moss surface illumination. During twelve (12) month period we also measured the height of the moss and the height of leaf litter. Obtained data were analyzed using calculated average values of abiotic factors and comparing them among permanent plots. Using complex multivariate statistical methods (DCA analysis) we tried to find the connection between the occurrence and dominance of taxa and abiotic factors. We found that the TKP41-50 (control) plots without the presence of mosses have higher values for leaf litter height and soil moisture. TKP31-40 plots have higher pH values compared to other plots, and the highest mosses on average. Plots TVP1-30 are heterogeneous and distributed along the gradients of illumination, soil air and surface temperature, and soil pH under grown mosses. On plots above the forest paths the acrocarp type of mosses prevail, as do many representatives of Jungermanniales. Diphyscium foliosum, Brachythecium sp., Rhizomnium punctatum, Plagiomnium rostratum, Hypnum cupressiforme, Thuidium tamariscinum, Plagiothecium undulatum appear on plots with higher air, soil and surface temperature, soil pH and the illumination of the moss surface. Plots with higher air and soil moisture designate the species Dicranodontium denudatum, Pellia epiphylla, Bazzania trilobata, Bazzania trilobata, Pleurozium schreberi, Eurhynchium angustirete, Atrichum undulatum, Calypogeia arguta, Calypogeia fissa, Leucobryum glaucoma and on plots with higher mosses Eurhynchium angustirete, Pleurozium schreberi appear. Mentioned abiotic factors influence the occurrence and colonization of bryophytes, but we found that the main limiting factor affecting the growth of mosses is height of leaf litter.
Sekundarne ključne besede: master theses;Bryophytes;abiotic factors;pleurocarp type;acrocarp type;mosses;liverworts;
URN: URN:SI:UM:
Vrsta dela (COBISS): Magistrsko delo/naloga
Komentar na gradivo: Univ. v Mariboru, Fak. za naravoslovje in matematiko, Oddelek za biologijo
Strani: XIII, 89 f.
ID: 11118438