Decline of arable flora diversity in Istria (from the year 2005 to the year 2017)
Changes in floristic composition of weed flora were assessed comparing two phytocoenological surveys carried out during vegetation seasons in 2005 and in 2017 on the Istrian Peninsula. A total of 50 fields (row crops, cereals, alfalfa fields, orchards/vineyards and ruderal areas) were surveyed for e...
| Permalink: | http://skupni.nsk.hr/Record/nsk.NSK01001028486/Details |
|---|---|
| Matična publikacija: |
Zbornik Veleučilišta u Rijeci (Online) 6 (2018), 1 ; str. 385-397 |
| Glavni autori: | Štefanić, Edita (Author), Kovačević, Vesna, inženjerka biologije, Antunović, Slavica |
| Vrsta građe: | e-članak |
| Jezik: | eng |
| Predmet: | |
| Online pristup: |
https://doi.org/10.31784/zvr.6.1.25 Hrčak |
| LEADER | 04722naa a22003854i 4500 | ||
|---|---|---|---|
| 001 | NSK01001028486 | ||
| 003 | HR-ZaNSK | ||
| 005 | 20190521105422.0 | ||
| 006 | m d | ||
| 007 | cr|||||||||||| | ||
| 008 | 190426s2018 ci | |0|| ||eng | ||
| 024 | 7 | |2 doi |a 10.31784/zvr.6.1.25 | |
| 035 | |a (HR-ZaNSK)001028486 | ||
| 040 | |a HR-ZaNSK |b hrv |c HR-ZaNSK |e ppiak | ||
| 041 | 0 | |a eng |b eng |b hrv | |
| 042 | |a croatica | ||
| 044 | |a ci |c hr | ||
| 080 | 1 | |a 57 |2 2011 | |
| 100 | 1 | |a Štefanić, Edita |4 aut | |
| 245 | 1 | 0 | |a Decline of arable flora diversity in Istria (from the year 2005 to the year 2017) |h [Elektronička građa] / |c Edita Štefanić, Vesna Kovačević, Slavica Antunović. |
| 300 | |b Ilustr. | ||
| 504 | |a Bibliografija: str. 395-396. | ||
| 504 | |a Abstract ; Sažetak. | ||
| 520 | |a Changes in floristic composition of weed flora were assessed comparing two phytocoenological surveys carried out during vegetation seasons in 2005 and in 2017 on the Istrian Peninsula. A total of 50 fields (row crops, cereals, alfalfa fields, orchards/vineyards and ruderal areas) were surveyed for each of the sampling time using Braun-Blanquet cover-abundance scale. Altogether 175 vascular plant species were recognized in both investigations. The most abundant species in 2005 were Avena fatua, Setaria verticilata, Lolium multiflorum and Veronica persica. In the recent survey these species became very rare or were even not detected in some habitats. In contrast, some species with very low relative abundance or not recorded in the earlier survey were found abundant in 2017. These are: Pastinaca sativa, Conyza canadensis, Picris echioides, Polygonum aviculare, and Heliotropium europaeum. The species richness was significantly higher in the earlier survey when 143 (82%) weeds were detected compared to only 97 species (55%) found in 2017. Only 64 species were found in both surveys, and these were considered frequent weeds. The comparison of weed communities from the earlier to the recent survey reflects the reduction of the weed flora at the regional scale, as well as at the field scale. The mean values of Shannon-Wiener diversity index were also higher in the earlier period and it decreased over time, particularly in row crops, cereals and ruderal habitats. This decrease was related to decline of species richness, and to the increase in inequality in the relative abundance of species. On the whole, canonical correspondence analysis indicated the major variations in species composition between different habitats. | ||
| 520 | |a Promjene u florističkom sastavu korovne flore Istre procijenjenje su putem dvije fitocenološke analize vegetacije izvršene tijekom 2005. i 2017. godine. U oba istraživanja pregledano je 50 polja korištenjem kombinirane procjene brojnosti i pokrovnosti vrsta metodom po Braun-Blanquetu. Ukupno je na istraživanom području evidentirano 175 vrsta vaskularne flore. Najvećom abundacijom u 2005. isticale su se Avena fatua, Setaria verticilata, Lolium multiflorum i Veronica persica, dok su u 2017. bile vrlo rijetke ili su čak nestale s nekih staništa. Nasuprot tome, neki korovi koji su bili neznatno zastupljeni ili ih nije bilo u ranijem istraživanju zabilježeni su s visokom abundacijom u istraživanjima 2017. godine. To su vrste Pastinaca sativa, Conyza canadensis, Picris echioides, Polygonum aviculare i Heliotropium europaeum. Floristički su bogatija bila istraživanja iz 2005. godine kada je utvrđeno 143 vrste korova (82 %) u odnosu na istraživanja izvršena 2017. kada je zabilježeno samo 97 vrsta, odnosno 55 % od ukupno evidentirane flore. Zajedničke u oba istraživana razdoblja bile su 64 korovne vrste koje pripadaju tipičnim i frekventnim korovima istraživanog područja. Promjene unutar korovnih zajednica utvrđene su ne samo na regionalnoj razini veći i unutar samih polja. Na to ukazuje i smanjenje Shannon-Wienerova indeksa raznolikosti (H’), posebice u okopavinama, žitaricama i na ruderalnim staništima. Na smanjenje Shannon-Wienerova indeksa raznolikosti utjecala je redukcija broja vrsta kao i njihova nejednaka abundacija. U konačnici, multivarijantna analiza (CCA) potvrdila je fluktuacije u florističkom sastavu korovne zajednice. | ||
| 653 | 0 | |a Bioraznolikost |a Korov |a Kartiranje flore | |
| 653 | 5 | |a Istra |a Hrvatska | |
| 700 | 1 | |a Kovačević, Vesna, |c inženjerka biologije |4 aut | |
| 700 | 1 | |a Antunović, Slavica |4 aut | |
| 773 | 0 | |t Zbornik Veleučilišta u Rijeci (Online) |x 1849-1723 |g 6 (2018), 1 ; str. 385-397 |w nsk.(HR-ZaNSK)000859884 | |
| 981 | |b Be2018 |b B01/18 | ||
| 998 | |b tino1905 | ||
| 856 | 4 | 0 | |u https://doi.org/10.31784/zvr.6.1.25 |
| 856 | 4 | 0 | |u https://hrcak.srce.hr/199930 |y Hrčak |
| 856 | 4 | 1 | |y Digitalna.nsk.hr |