Klemen Jerina

Klemen Jerina
University of Ljubljana · Department of Forestry

PhD

About

139
Publications
60,907
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3,138
Citations
Additional affiliations
January 2008 - present
University of Ljubljana
Position
  • Group Leader

Publications

Publications (139)
Article
Full-text available
In this paper, we provide an overview of the causes of death of Alpine chamois (Rupicapra r. rupicapra) diagnosed in the national passive health surveillance of chamois in Slovenia. From 2000 to 2020, 284 free-ranging chamois provided by hunters were necropsied at the Veterinary Faculty, University of Ljubljana, Slovenia. Depending on the results o...
Article
A diverse assemblage of reptiles, birds and mammals, ranging from the smallest to the size of the Brown bear, prey on the Edible Dormouse. Dormice are particularly exposed to predation while actively searching for food in the tree canopy. A much narrower spectrum of species can access dormice during their periods of inactivity, typically spent unde...
Article
Isotope diet-tissue discrimination factors can significantly influence dietary proportions estimated with stable isotope mixing models. For bears, for which discrimination factors from controlled dietary experiments are currently lacking for most tissues and diets, literature reports 3 approaches have so far been used to compile carbon and nitrogen...
Article
Full-text available
Species assemblages often have a non‐random nested organization, which in vertebrate scavenger (carrion‐consuming) assemblages is thought to be driven by facilitation in competitive environments. However, not all scavenger species play the same role in maintaining assemblage structure, as some species are obligate scavengers (i.e., vultures) and ot...
Poster
Full-text available
Interaction between Brown bears and Wild boars at artificial feeding sites in Slovenia Dejan Bordjan1, László Gál2, Klemen Jerina1 1 – Forestry department of Biotechnical faculty, University of Ljubljana, Slovenia 2 – Transylvanian Wildlife Project Brown bear and wild boar occupy similar habitats and have overlapping ecological niche in many dim...
Article
Full-text available
A total of 249 serum samples from 13 wild animal species namely fallow deer (Dama dama, n = 1), roe deer (Capreolus capreolus, n = 80), red deer (Cervus elaphus, n = 22), chamois (Rupicapra rupicapra, n = 21), mouflon (Ovis musimon, n = 4), brown hare (Lepus europaeus, n = 2), nutria (Myocastor coypus, n = 1), red fox (Vulpes vulpes, n = 97), stone...
Chapter
This comprehensive species-specific chapter covers all aspects of the mammalian biology, including paleontology, physiology, genetics, reproduction and development, ecology, habitat, diet, mortality, and behavior. The economic significance and management of mammals and future challenges for research and conservation are addressed as well. The cha...
Article
Full-text available
Human–wildlife conflicts sometimes involve bold animals that do not fear humans and their activities. Such behaviour is detrimental to both wildlife and people and may lead to conflicts, which can be especially serious for large carnivores. Like most wildlife, these species have adapted to live in highly humanized landscapes by adopting human avoid...
Article
Full-text available
In this paper, we provide an overview of the causes of death of roe deer (Capreolus capreolus) diagnosed within the national passive health surveillance of roe deer in Slovenia. From 2000 to 2019, postmortem examinations of 510 free-ranging roe deer provided by hunters were conducted at the Veterinary Faculty, Slovenia. A comprehensive necropsy was...
Article
In human-dominated landscapes throughout the world, wildlife seek out anthropogenic foods because they are high in nutritional value and are consistently available. To investigate this mode of foraging, some researchers use stable isotope analysis to detect these animals in populations and estimate their individual diets. In this study, we develop...
Article
Full-text available
Reliable data and methods for assessing changes in wildlife population size over time are necessary for management and conservation. For most species, assessing abundance is an expensive and labor-intensive task that is not affordable on a frequent basis. We present a novel approach to reconstructing brown bear population dynamics in Slovenia in th...
Chapter
Full-text available
Conflicts between humans and bears have occurred since prehistory. Through time, the catalogue of human–bear conflicts (HBC) has been changing depending on the values and needs of human societies and their interactions with bears. Even today, conflict situations vary among the eight species of bears and geographically across these species’ ranges....
Chapter
Bears have fascinated people since ancient times. The relationship between bears and humans dates back thousands of years, during which time we have also competed with bears for shelter and food. In modern times, bears have come under pressure through encroachment on their habitats, climate change, and illegal trade in their body parts, including t...
Chapter
The media and scientific literature are increasingly reporting an escalation of large carnivore attacks on humans, mainly in the so-called developed countries, such as Europe and North America. Although large carnivore populations have generally increased in developed countries, increased numbers are not solely responsible for the observed rise in...
Article
Full-text available
The organization of ecological assemblages has important implications for ecosystem functioning, but little is known about how scavenger communities organize at the global scale. Here, we test four hypotheses on the factors affecting the network structure of terrestrial vertebrate scavenger assemblages and its implications on ecosystem functioning....
Article
Full-text available
An increasing number of countries are becoming aware of the presence of non-native species that may exhibit invasive features and cause biodiversity loss. A two-year camera trap survey was performed on Mt. Mosor, Croatia to determine the daily and seasonal activity patterns of recently introduced non-native aoudad. Aoudad was most active in open ro...
Article
Following historical restrictions to isolated and patchy populations, large carnivores like the brown bear Ursus arctos are recolonizing areas of their historical range in Europe. This process is of particular interest in the Alps and the Dinaric Mountainsin Central Europe, the largest mountain range in the continent and of transboundary conservati...
Technical Report
Full-text available
Rjavi medved je v Sloveniji in drugih državah EU strogo zavarovana vrsta; v več teh državah je tudi močno ogrožen. V Sloveniji sta se njegova številčnost in razširjenost v preteklem stoletju najprej počasi, po strogi zaščiti leta 1993 pa hitro povečevali. Številčnost medveda v Sloveniji znaša ≈1000, celotna Dinarsko-Pindska populacija pa šteje prek...
Article
PDF of submitted version available for free at: http://publish.illinois.edu/maxallen/files/2019/06/Sebastian-Gonzalez-et-al.-MS.pdf Understanding the distribution of biodiversity across the Earth is one of the most challenging questions in biology. Much research has been directed at explaining the species latitudinal pattern showing that communi...
Article
Full-text available
The information on absolute and/or relative abundance of wild ungulates is one of the key parameters for sustainable and efficient management. Wild ungulates are the most important and abundant group of game species in Slovenia; however, there are currently no standard census methods, which would be performed on the annual basis. There are various...
Article
Full-text available
Satellite telemetry is an increasingly utilized technology in wildlife research, and current devices can track individual animal movements at unprecedented spatial and temporal resolutions. However, as we enter the golden age of satellite telemetry, we need an in-depth understanding of the main technological, species-specific and environmental fact...
Data
R-code for boosted beta regression (Fix acquisition rate). (R)
Data
Covariate partial effects on the variability of the fix acquisition rate. (PDF)
Data
Tagged individuals per species. (PDF)
Data
Covariate partial effects on the variability of the Overall fix success rate. (PDF)
Data
Trends in observed data. (PDF)
Data
Global dataset for boosted beta regressions. (CSV)
Data
Description of data fields in S1 Data. (CSV)
Data
Satellite telemetry articles published. (PDF)
Data
Distribution of response variables and covariates. (PDF)
Data
Unit purchase and operation costs. (PDF)
Data
R-code for boosted beta regression (Overall fix success rate). (R)
Data
Standardized data collection questionnaire. (PDF)
Data
Satellite telemetry evaluations. (PDF)
Article
Full-text available
Muscle, liver and kidney of 21 Barbary sheep (Ammotragus lervia) from Mosor Mountain, Croatia, were sampled to quantify the activity of caesium and potassium radionuclides, five toxic and ten essential stabile elements in order to establish reference values for this species and to evaluate the potential of Barbary sheep tissues to reflect environme...
Article
Full-text available
Ethanol storage and lipid extraction can alter the isotopic composition of animal tissues, which can bias dietary estimates calculated by stable isotope mixing models. We examined the effects of ethanol storage and lipid extraction on δ13C, δ15N, and δ34S values measured in brown bear (Ursus arctos) muscles and livers. We also used isotopic data fr...
Article
Full-text available
Artificial feeding of wildlife is a widely used tool for a range of conservation and management goals. While the effects of artificial feeding on target species have been studied rather extensively, little is known about its effects on non-target species. We used automatic video surveillance to monitor the vertebrate species using artificial feedin...
Technical Report
This is a technical report to the European Union on the assessment methods of angiosperms in Norwegian coastal waters1 in relation to the Water Framework Directive (WFD)
Article
Full-text available
Pan-European legislation stimulates international cooperation to overarching challenges of large carnivore management across jurisdictions. We present an analysis for current transboundary brown bear (Ursus arctos) population management in Croatia and Slovenia. Slovenia's bear management attempts aimed to reduce human-bear conflicts, by limiting th...
Chapter
Large carnivores are challenging to manage, partly because they are wide-ranging and therefore have large distribution ranges that may cross political or administrative boundaries. Moreover, large carnivores are conflict prone in relation with some human activities, which results in diverse conservation and management policies. The conservation and...
Poster
Full-text available
Master thesis lead inside the Life European project frame "LIFE DINALP BEAR" act to protect and conserve the dinaric population of the brown bear (Ursus arctos). http://dinalpbear.eu/en/ The study was lead at 18 selected feeding sites inside the Core Bear Protective Area in the south of Slovenia. Females with cubs adopt their behavior in order to a...
Poster
Stable isotopes derived from muscle and liver tissues of bears can be used to study their diets at the population and individual level. Ethanol (high concentrated ethanol-water solution) is a commonly used preservative for such samples, because it is relatively inexpensive, easy to handle and safe. As such it has been long used for long-term storag...
Poster
Full-text available
Stable isotopes derived from muscle and liver tissues of bears can be used to study their diets at the population and individual level. Ethanol (high concentrated ethanol-water solution) is a commonly used preservative for such samples, because it is relatively inexpensive, easy to handle and safe. As such it has been long used for long-term storag...
Conference Paper
Full-text available
In Europe, human-bear conflicts are an important topic for research and management. There are some scientific evidences that anthropogenic foods near settlements are promoting the development of conflict behavior by bears and are therefore causing human-bear conflicts. Some countries, including Slovenia, use controversial management practices such...
Poster
The poster is illustrating the important aspect of a widespread wildlife management practice; the side-effects of artificial feeding of brown bear. Many non-target species visit these feeding sites, with important differences in species diversity and community composition between seasons and between feeding sites provided with different type of foo...
Technical Report
Full-text available
life dinalp bear - action a3 Action A3: Analysis of spatial connectivity and preparation of environmental impact assessment guidelines 1 Methodological design (but for section 2.7), conducted the analyses, interpreted the results, and wrote the report. 2 Methodological design for section 2.7, interpreted the results, and commented on the report.
Article
Full-text available
• Evolutionary traps, and their derivative, ecological traps, occur when animals make maladaptive decisions based on seemingly reliable environmental cues, and are important mechanistic explanations for declines in animal populations. • Despite the interest in large carnivore conservation in human‐modified landscapes, the emergence of traps and the...
Article
Foreliggende vurdering omfatter marin natur i fjorder og kystområder på Svalbard. Svalbard omfatter etter Svalbardtraktaten de store øyene Spitsbergen og Nordaustlandet, alle omkringliggende øyer, samt Bjørnøya og Hopen. https://www.artsdatabanken.no/Pages/259184
Conference Paper
Full-text available
The mitigation of the conflicts associated to livestock predation and agriculture damage is pivotal for the conservation of large carnivores in Europe. Aiming to identify the management strategies that more efficiently mitigate these conflicts, we made a critical review of the current policies to manage damage made by brown bears, lynx, wolves and...
Presentation
When available, bears readily use concentrated food sources, such as large animal carcasses, salmon streams, artificial feeding sites and garbage dumps. These provide bears with abundant and often predictable foraging opportunities. However, using such resources can be risky for a bear or its offspring due to increased possibility of aggressive bea...
Article
Full-text available
For successful large carnivore conservation it is important to understand mechanisms how large carnivores adapt to human presence, including anthropogenic environmental modifications. Widespread Holarctic distribution throughout various levels of human-use makes the brown bear (Ursus arctos) an appropriate model species for studying response to ant...
Article
Full-text available
Diversionary feeding uses food to lure animals away from areas where they are unwanted or could cause conflicts with people. With bears (Ursidae) increasingly attracted to human food sources worldwide, diversionary feeding represents a seemingly logical and publicly acceptable means of alleviating conflicts. Feeding wildlife is widely practiced in...
Article
Full-text available
Large quantities of food subsidies provided by humans to animal communities have the potential to change a variety of animal life traits, including denning behaviour of facultative hibernators like bears. Brown bears Ursus arctos regularly use anthropogenic food, but it has remained unclear if human food subsidies affect their hibernation and denni...
Article
Full-text available
Red deer (Cervus elaphus L.) is in many parts of the world ecologically important and highly popular game species. Its population densities and environmental impacts largely depend on habitat suitability, which in turn is under strong influence of humans. Wildlife management intentionally improves habitat suitability, while forestry's impacts on re...
Article
Full-text available
We analysed effects of females’ body mass and age on reproductive capacity of European roe deer (Capreolus capreolus) in a large sample set of 1312 females (305 yearlings and 1007 adults), hunted throughout Slovenia, central Europe, in the period 2013–2015. Body mass positively affected probability of ovulation and potential litter size (number of...
Data
Corrections of body mass by removing the temporal effect. (DOCX)
Data
Individual data on roe deer females (assessed age, body mass, number of corpora lutea in ovaries) used in the study. (XLSX)
Data
Percentage of females with given number of corpora lutea in different body mass classes. (DOCX)
Data
General Regression Model of body mass of roe deer females in Slovenia. The explanatory variables are year, age class, day in a year (covariate) and interaction year × age class; model was built using the best subset approach and Mallow’s Cp selection criterion; last level of each categorical variable served as contrast (estimate = 0) for the remain...