1. Metoda štetja kupčkov iztrebkov kot optimalen način ocenjevanja relativnih gostot jelenjadi na lokalni ravniUrša Fležar, Klemen Jerina, 2020, original scientific article Abstract: Vedno boljše poznavanje pomena parkljarjev za ekosistem in človeka ter hkrati širjenje teh živalskih vrst v evropskem prostoru prinaša potrebo po nadgrajevanju in izpopolnjevanju načinov njihovega upravljanja. V Sloveniji se je v zadnjih letih zaradi stopnjevanja konfliktov interesov gozdarske, lovske in kmetijske stroke pojavila potreba po natančnejšem poznavanju številčnosti domorodnih vrst parkljarjev, še posebno jelenjadi (Cervus elaphus). V tem prispevku smo opredelili metodo štetja kupčkov iztrebkov s predhodnim čiščenjem kot najbolj optimalno metodo za ugotavljanje lokalnih gostot jelenjadi in podrobno razložili metodološke korake za uspešno načrtovanje in izvedbo metode na terenu. Zaključili smo s primerom izvedbe metode v LPN Kompas Peskovci in predstavili rezultate gostot jelenjadi in srnjadi (Capreolus capreolus) na omenjenem območju, pridobljenimi z metodo štetja kupčkov iztrebkov.
Keywords: prostoživeči parkljarji, jelenjad, Cervus elaphus, srnjad, Capreolus capreolus, štetje kupčkov iztrebkov, upravljanje prostoživečih živali, monitoring, LPN Kompas Peskovc
Published in DiRROS: 14.12.2020; Views: 1587; Downloads: 483
 Full text (320,21 KB) |
2. Capital-income breeding in male ungulates : causes and consequences of strategy differences among speciesMarco Apollonio, Enrico Merli, Roberta Chirichella, Boštjan Pokorny, Ajša Alagić, Katarina Flajšman, Philip A. Stephens, 2020, original scientific article Abstract: The capital and income breeding concept links energy resources used during reproduction to the timing of their acquisition. During reproduction, capital breeders rely on resources gained previously and accumulated for reproductive investment. By contrast, income breeders use mainly resources collected during the period of reproductive activity. Most commonly, this concept is applied to females; relatively few studies have considered males. Moreover, there has been little attention to the link between the capital-income divide and other aspects of mating strategy. We studied adult males of three wild ungulates with different levels of polygyny. A large dataset (4,264 red deer, 53,619 roe deer, and 13,537 Alpine chamois, respectively) was obtained during 2007-2017 in the whole territory of Slovenia and in the Trento province, Italy. During the rut, body mass loss of males in highly polygynous species was more than twice that of weakly polygynous species: on average, red deer stags lost 19.5%; chamois bucks 16.0%; and roe deer bucks 7.5% of their body mass. This indicates potential for a hitherto unrecognized link between the degree of intrasexual competition and the degree of capital mating. The variability in body mass at the end of the rut was clearly reduced in both highly polygynous species (from 15.1 to 9.4% in red deer, and from 12.5 to 10.5% in chamois), but did not change in roe deer. Finally, roe deer bucks had recovered body mass to that of the pre-rut period by just 2 months after the rut, while red deer stags did not manage to compensate the loss of weight until the end of the year. We suggest that, at least in ungulates, there is a link between the degree of polygyny and that of capital breeding. Males of capital and income breeders underwent body mass changes resulting from different reproductive investment during the rut. Capital breeders lost considerably more weight, and invested a variable amount of energy among individuals or among years, possibly to cope with different environmental or body conditions. In so doing, they ended the rut with poorer but more even condition among individuals.
Keywords: capital-income breeding, male reproductive investment, Capreolus capreolus, Cervus elaphus, Rupicapra rupicapra
Published in DiRROS: 23.09.2020; Views: 1335; Downloads: 803
Full text (1,10 MB)
This document has many files! More... |
3. Vplivi okoljskih dejavnikov na prostorsko razporeditev jelenjadi v Poljanski dolini in Polhograjskih dolomitihMiran Hafner, Blaž Černe, 2020, original scientific article Abstract: V Sloveniji navadni jelen (Cervus elaphus L.) še vedno širi svojo prisotnost na številna območja, med njimi tudi v Poljansko dolino in Polhograjske dolomite. V raziskavi smo proučili, kateri okoljski dejavniki ključno vplivajo na njegovo prostorsko razporeditev v gričevnatem in ponekod v sredogorskem proučevanem območju s povprečno gozdnatostjo 67 %. Raziskava temelji na vzorcu 585 georeferenciranih lokacij odvzema ter GIS-podatkovnih plasteh 34 okoljskih spremenljivk. Logistična regresija napoveduje, da se verjetnost za primernost prostora za habitat jelena v prvem modelu multivariatno povečuje z večanjem deleža gozdov, z manjšanjem razdalje do sosednjega območja, z večjim deležem dvoslojnih, raznomernih, prebiralnih gozdov ter grmišč in panjevcev, z večanjem deleža sestojev v obnovi ter zmanjšuje z manjšim deležem mladja. V drugem modelu smo odkrili tudi pozitiven vpliv deleža plodonosnega gozdnega drevja v lesni zalogi sestojev ter negativne vplive odsotnosti krmišč, večje razdalje do gozdnih cest in majhnih vrednosti sončnega obsevanja pozimi.
Keywords: navadni jelen, Cervus elaphus, habitat, Poljanska dolina, Polhograjski dolomiti, okoljski dejavniki, prostorska razporeditev, parkljarji, upravljanje z divjadjo, Slovenija
Published in DiRROS: 29.02.2020; Views: 2295; Downloads: 677
Full text (275,67 KB) |
4. Gostota in biomasa srnjadi (Capreolus capreolus L.) in jelenjadi (Cervus elaphus L.) v nekaterih ekosistemih KočevskeMiha Adamič, Marijan Kotar, 1987, original scientific article Keywords: gostota srnjadi, biomasa srnjadi, srnjad, Capreolus capreolus L., Cervus elaphus L., jelenjad, Kočevje
Published in DiRROS: 12.07.2017; Views: 4290; Downloads: 1834
Full text (1,20 MB) |
|
