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Stefaniya Kamenova

Stefaniya Kamenova
National Museum of Natural History at the Bulgarian Academy of Sciences

PhD

About

34
Publications
11,520
Reads
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580
Citations
Citations since 2017
23 Research Items
471 Citations
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2017201820192020202120222023020406080
Introduction
Broadly, I am interested in food web ecology, and I develop molecular and stable isotope tools for the empirical characterization of trophic interactions in a variety of organisms.

Publications

Publications (34)
Article
Full-text available
Background Although wild ungulate populations are heavily monitored throughout Europe, we understand little of how parasites affect population dynamics, and there is no systematic, long-term monitoring of parasite diversity and parasite loads. Such monitoring is in part hampered by a lack of time- and cost-effective assay methodologies with high se...
Article
Full-text available
Background Herbivores modify the structure and function of tundra ecosystems. Understanding their impacts is necessary to assess the responses of these ecosystems to ongoing environmental changes. However, the effects of herbivores on plants and ecosystem structure and function vary across the Arctic. Strong spatial variation in herbivore effects i...
Article
Full-text available
During the last decade, methods based on high-throughput sequencing such as DNA metabarcoding have opened up for a range of new questions in animal dietary studies. One of the major advantages of dietary metabarcoding resides in the potential to infer a quantitative relationship between sequence read proportions and biomass of ingested food. Howeve...
Article
Full-text available
Annual monitoring of mortality agents in the course of a spruce budworm (Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae)) population cycle is essential to understanding the factors governing the rise and collapse of outbreaks. To date, assessments of causes of budworm mortality have relied on laboratory rearing of field-collected larv...
Preprint
Full-text available
Maximizing the delivery of key ecosystem services such as biological control through the management of natural enemy communities is one of the major challenges for modern agriculture. The main obstacle lies in our yet limited capacity of identifying the factors that drive the dynamics of trophic interactions within multi-species assemblages. Invert...
Article
Full-text available
The rapidly growing field of molecular diet analysis is becoming increasingly popular among ecologists, especially when investigating methodologically challenging groups, such as invertebrate generalist predators. Prey DNA detection success is known to be affected by multiple factors, however, the type of dietary sample has rarely been considered....
Article
Community-wide stable isotope analysis reveals two distinct trophic groups in a service-providing carabid community – ERRATUM - S. Kamenova, C. Leroux, S.E. Polin, M. Plantegenest
Article
Full-text available
Disentangling trophic interactions among species is important for elucidating mechanisms underlying ecosystem functioning and services. Carabid beetles are an important guild of predators that may regulate pest populations in arable landscapes, but their generalist feeding behavior hinders predictions about their actual contribution to pest control...
Article
Biological invasions exert multiple pervasive effects on ecosystems, potentially disrupting species interactions and global ecological processes. Our ability to successfully predict and manage the ecosystem-level impacts of biological invasions is strongly dependent on our capacity to empirically characterize complex biological interactions and the...
Article
Why do some species successfully invade new environments? Which of these invasive species will alter or even reshape their new environment? The answers to these questions are simultaneously critical and complex. They are critical because invasive species can spectacularly alter their new environment, leading to native species extinctions or loss of...
Article
Full-text available
The rapidly growing field of molecular diet analysis is becoming increasingly popular among ecologists, especially when investigating methodologically challenging groups such as invertebrate generalist predators. Prey DNA detection success is known to be affected by multiple factors, however the type of dietary sample has rarely been considered. He...
Book
Biological invasions exert multiple pervasive effects on ecosystems, potentially disrupting species interactions and global ecological processes. Our ability to successfully predict and manage the ecosystem-level impacts of biological invasions is strongly dependent on our capacity to empirically characterize complex biological interactions and the...
Book
Why do some species successfully invade new environments? Which of these invasive species will alter or even reshape their new environment? The answers to these questions are simultaneously critical and complex. They are critical because invasive species can spectacularly alter their new environment, leading to native species extinctions or loss of...
Article
Species diversity, and the various interactions that occur between species, supports ecosystems functioning and benefit human societies. Monitoring the response of species interactions to human alterations of the environment is thus crucial for preserving ecosystems. Ecological networks are now the standard method for representing and simultaneousl...
Article
Full-text available
The study of space use and population density in different habitats is an important step in understanding the expansion process of an introduced species and in gathering useful knowledge for management actions. Pallas's squirrel (Callosciurus erythraeus) was introduced on the Cap d'Antibes (southeastern France) at the end of the 1960s. We used dire...
Article
Maximizing farmland biodiversity has been widely promotedthrough public policies as a sustainable alternative to chemicalinputs. The biodiversity of naturally occurring generalist predators,such as spiders or ground-living beetles, has been positively associatedwith pest control in intensively managed agro-ecosystems. However,our ability to success...
Article
Full-text available
Carabid beetles form rich and abundant communities in arable landscapes. Their generalist feeding behaviour and similar environmental requirements raise questions about the mechanisms allowing the coexistence of such species-rich assemblages. We hypothesized that subtle niche partitioning comes into play on spatial, temporal, or trophic basis. To t...
Chapter
Food webs in agricultural systems are complex and trophic linkages are difficult to track using conventional methodologies. Here, we review three alternative approaches that allow empirical assessment of feeding interactions: DNA-based techniques, and stable isotope and fatty acid analyses. DNA-based methods, namely multiplex PCR and next-generatio...
Thesis
Les agro-écosystèmes occupent un tiers de la surface globale terrestre (FAOSTAT 1999), constituant la surface la plus importante en terres exploitées par l’homme. Cette expansion considérable, associée à une intensification de la production agricole au cours la révolution verte a permis de subvenir aux besoins alimentaires de la population mondiale...
Article
Food webs in agricultural systems are complex and trophic linkages are difficult to track using conventional methodologies. Here, we review three alternative approaches that allow empirical assessment of feeding interactions: DNA-based techniques, and stable isotope and fatty acid analyses. DNA-based methods, namely multiplex PCR and next generatio...
Book
Food webs in agricultural systems are complex and trophic linkages are difficult to track using conventional methodologies. Here, we review three alternative approaches that allow empirical assessment of feeding interactions: DNA-based techniques, and stable isotope and fatty acid analyses. DNA-based methods, namely multiplex PCR and next-generatio...
Conference Paper
Background/Question/Methods Agricultural landscapes host an important part of common biodiversity. Recent intensification of agricultural practices allowed satisfying food demand of growing populations but was detrimental for the majority of species and ecosystem services they provide. The promotion of biological control of pests by their natural...
Article
Full-text available
Les plantes sont sessiles et les flux génétiques entre populations sont donc limités. Cette faible mobilité renforce une sélection divergente dans des environnements contrastés. Par conséquent, on peut partir du principe que dans un milieu donné, les populations locales présentent une "fitness" supérieure à celle des populations non locales. Cepend...

Questions

Questions (2)
Question
I am working with degraded eDNA (bird poop, dead insect larvae, etc.) and I usually use BSA but this is the first time I will be using a ready-to-go PCR mix. I was wondering if such mix is already optimized for degraded template DNA so that I wouldn't need to add the BSA anymore. Thanks!
Question
I would like to extract bird faeces for NGS diet analysis.

Network

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Projects

Project (1)
Project
The objectives of REININ project are two-fold: 1) Documenting variations in reindeer diet quality and composition across seasons, habitats and geographic regions, and in relation with the presence/absence of other herbivore species in the Arctic, such as geese, ptarmigan or rodents; 2) Integrating this ecosystem-based information with socio-economic data and local knowledge of reindeer herders in order to identify relevant governance solutions for sustainable reindeer husbandry and resilient tundra ecosystem management in the face of global change. We will be using DNA metabarcoding and stable isotope ratios for analyzing the geographic, climatic and seasonal variations in reindeer diet across different socio-economic and ecological contexts in four arctic regions: Svalbard (wild reindeer populations, no management), Finnmark (semi-domesticated reindeers, long traditions in herding), Russian Arctic (wild and domestic reindeers, long traditions in herding), Canada and Alaska (wild populations of caribou and recently introduced reindeer herding).