Izvorni znanstveni članak
https://doi.org/10.31953/sz.46.1.3
BIOSPELEOLOGICAL INVESTIGATIONS OF THE CAVES AND PITS OF THE NORTHERN VELEBIT NATIONAL PARK IN 2018
Antun Alegro
orcid.org/0000-0001-6193-2395
; Prirodoslovno-matematički fakultet Sveučilišta u Zagrebu,Botanički zavod, Biološki odsjek
Vedran Šegota
orcid.org/0000-0002-9233-7457
; Prirodoslovno-matematički fakultet Sveučilišta u Zagrebu,Botanički zavod, Biološki odsjek
Sažetak
The grasslands of the Northern Velebit National Park are for the most part not a primary type
of vegetation, however, they came about as a consequence of human activity by deforestation,
burning, grazing and mowing.
This process began several millennia ago and has continuously maintained the balance
between the forest and grasslands, and it has resulted in a greater biodiversity than what would
have been in the untouched natural state. In the second half of the 20th century, traditional seasonal
transhumant vertical migrations of people and livestock from Podgorje to the Velebit summer
pastures were discontinued as a consequence of the great depopulation of Podgorje, which today
is the least populated region in Croatia. Studies of the vegetation of the grasslands within the
park during 2009 and 2010 indicated the large diversity of the grasslands which differ from one
another depending on the above sea level altitude, relief of the terrain, features of the soil, influence
of the wind and the former usage of the land. Succession, in other words, the encroachment of
the grassland areas by woody and shrubby species was noted over almost all types of grassland,
however, the intensity of the succesion and also the species which grow depend on the type of
grassland. Succession is significantly slower on grasslands in the upper zones than on grasslands
of the littoral slopes, due to the shorter vegetation period, the harsher climate, the exposure to
the strong bura wind and wider grasslands which under hihger succession pressure than the
smaller, fragmented grasslands that we come across at the lower altitudes. The conservation of
grasslands would have to be a priority for the park’s management, because besides the exceptional
biodiversity, the grasslands also tell us about the history of the whole region, the way of life, the
economy and the movements, and makes up an essential and immeasurable important part of both
the natural and cultural heritage.
Ključne riječi
pastures; succession; transhumance; grazing
Hrčak ID:
231852
URI
Datum izdavanja:
20.12.2019.
Posjeta: 1.593 *