Vpliv organske zastirke na talno favno izbranih nevretenčarskih skupin travnika

magistrsko delo

Katarina Tušar (Author), Marjetka Suhadolc (Reviewer), Ivan Kos (Mentor), Ivan Kos (Thesis defence commission member), Marjetka Suhadolc (Thesis defence commission member), Rudi Verovnik (Thesis defence commission member)

Abstract

Leto dni (februar 2016 – februar 2017) smo beležili stanje talnih združb izbranih nevretenčarskih skupin v vasi Grebenje (občina Velike Lašče na jugu Slovenije). Spremljali smo populacijske parametre ulovljenih strig, drobnonožk, pajkov, paščipalcev, mravelj, hroščev in mokric v tleh treh različnih okolij: na kserofilnem travniku, na travniku, pokritem z zastirko, in v gozdu. V približno enakih časovnih intervalih smo izvedli 8 vzorčenj z vzorčevalno sondo po metodi kvadratov. Združba v tleh pod zastirko se je tekom vzorčenja najbolj izrazito spremenila. V primerjavi z združbo travnika je dosegala višje ocene vrstne pestrosti in višje vrednosti Shannon-Wienerjevega diverzitetnega indeksa ter indeksa stalnosti. Ugodne mikroklimatske razmere in dodaten vir hrane so omogočili naselitev novih vrst in blažili medvrstno kompeticijo, zato je združba pod zastirko postala bolj heterogena kot travniška združba. Indeks podobnosti med združbami po Renkonenu je kazal postopen upad podobnosti med združbama na travniku in pod zastirko ter relativno bolj stabilno in višjo podobnost med združbama pod zastirko in v gozdu, delno na račun migracije gozdnih vrst v ugodno mikrookolje, delno pa zaradi upada pogostih travniških vrst (predvsem mravelj) pod zastirko. Spremenila se je tudi trofična struktura združbe pod zastirko; v primerjavi s travniško združbo je vsebovala večji delež fungivorov, detritivorov in omnivorov. Zastirka se je izkazala kot učinkovito sredstvo za spodbujanje biodiverzitete in ustvarjanje ugodnih mikroklimatskih razmer v tleh.

Keywords

tla;zastirka;makrofavna;

Data

Language:	Slovenian
Year of publishing:	2018
Typology:	2.09 - Master's Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[K. Tušar]
UDC:	574.1(043.2)
COBISS:	4878927
Views:	697
Downloads:	164
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	ǂThe ǂinfluence of organic mulch on a meadow soil community of selected invertebrate taxa
Secondary abstract:	The state of soil assemblages of selected invertebrate taxa in Grebenje village (municipality Velike Lašče in southern Slovenia) was monitored for one year (February 2016 – February 2017). The population parameters of caught centipedes, symphylans, spiders, pseudoscorpions, ants, beetles, and woodlice were recorded in three different environments: in xerophillic meadow soil, in mulched meadow soil, and in forest soil. At approximately equal time intervals, eight samplings were carried out using a sampling probe based on the quadrat method. Over the course of the sampling period, the assemblage under mulch underwent the most significant change. Compared to the meadow assemblage, higher speciess richness, higher Shannon-Wiener diversity index values and evenness were estimated for the mulch assemblage. A favourable microclimate and additional source of food enabled colonisation of new species and mitigated interspecies competition, so the mulch assemblage became more heterogenous than the meadow community. Renkonen's similarity index showed a gradual decline in similarity between the meadow and the mulch assemblage and relatively higher and more stable similarity between the mulch and the forest assemblage, partially due to migration of forest species into the favourable microenvironment and partially due to the decline of a number of common meadow species (especially ants) under mulch. Furthermore, the trophic structure of the assemblage under mulch changed; compared to the meadow assemblage, it contained a larger ratio of fungivores, detritivors, and omnivores. The mulch has proven to be an effective means of promoting biodiversity and creating favorable microclimate conditions in the soil.
Secondary keywords:	soil;mulch;macrofauna;
Type (COBISS):	Master's thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. Ljubljana, Biotehniška fak.
Pages:	X, 75, [1] f.
ID:	10961127