Naslov
Environmental and plant richness changes as a result of long-term different disturbance intensities in Sub-mediterranean grassland (Central Italy)

Autori
Catorci, Andrea: Ottaviani, Gianluigi: Gatti, Renata: Vitasović Kosić, Ivana: Cesaretti, Sabrina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Succession, management and restoration of dry grasslands / Janišová, Monika: Budzáková, Monika: Petrášová, Mária - Bratislava, 2010, 13-14

ISBN
978-80-89133-19-2

Skup
7th European Dry Grassland Meeting

Mjesto i datum
Smolenice, Slovačka, 27.05.2010. - 31.05.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Sub-mediterranean grassland; management modification; Brachypodium genuense; Central Italy

Sažetak
In the whole Europe, semi-natural calcareous grasslands are in strong decline in extension and threatened by abandonment (Riecken et al. 2002) and these managed pastures, being very rich-species ecosystems and representing priority habitat for European Union (92/43/EEC Directive) are noteworthy of conservation (Pärtel et al. 1996, Sebastià et al. 2008). The study area is located in Central Italy at 1500m a.s.l. and it is characterized by calcareous substratum, Northern aspect and a slope of 15-20°. Inside it traditional pastoral activities are mowing at the end of June then grazing. In last decades these practices underwent a collapse and intermediate situations (only mowing) or abandonment occurred. In this study the results regarding long-term change due to management modification (mowing and grazing–data of 1982, mowing and abandonment–data of 2005) are compared for the comprehension of different disturbance regimes effects on floristic richness and ecological differentiation. Contrarily to Grime’s theory (1973), the highest species richness is not noted in intermediately disturbed grassland, but in abandoned pasture ; in unmanaged situation an increase of Brachypodium genuense is evidenced. This provokes floristic (66% of whole flora) and soil parameters changes. The biggest shifts interest biomass and litter production, soil moisture, pH and nitrogen value. B. genuense has big dimension, strong vegetative capacity and high phytomass production that ensuing the formation of big litter amount, thus giving to this species a strong competitive ability. Early flowering strategy allows to avoid the period of top expansion of B. genuense and/or regenerative strategies (stolons first of all) consenting the competition with B. genuense for water and nutrients resources.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija)

POVEZANOST RADA