Southeastern Europe Research Articles

The influence of the Avar Khanate on the ethno-political situation in South-Eastern Europe

This article provides an in-depth examination of the ethno-political impact of the Avar Khanate in Southeast Europe from the 7th to the 10th centuries. The Avars, through their military prowess and strategic settlement practices, brought about significant changes in the political and cultural landscape of the region. Their influence extended beyond warfare, as they played a crucial role in reshaping the ethnic composition and political equilibrium of Southeast Europe. The article delves into various aspects of Avar life, including their war economy, settlements, and agricultural and craft activities, highlighting how these factors influenced neighboring peoples and cultures. The Avars' interactions with the Byzantine Empire and other neighboring entities are also explored, emphasizing their role in shaping the region's long-term historical trajectory. By analyzing these multifaceted influences, the study provides valuable insights into the ethno-political legacy of the Avar Khanate, offering a nuanced understanding of their lasting impact on the region. The research underscores the importance of the Avars in the broader context of Southeast European history, contributing to a deeper comprehension of the historical forces that have shaped the region's development over the centuries. This comprehensive analysis not only enhances our knowledge of the Avar Khanate but also sheds light on the broader ethno-political processes at play during this critical period in Southeast European history.

Prolonged eosinophilia caused by Strongyloidiasis in a patient with rheumatoid arthritis treated with Upadacitinib.

Rheumatoid arthritis (RA) is a systemic disease, which is caused by dysregulation of the immune system in the susceptible persons, making them immunocompromised and prone to infections during the course of their disease. The majority of RA patients are being treated with immunosuppressive drugs which render them even more immunocompromised. We present a Caucasian patient living in South-eastern Europe who developed prolonged eosinophilia during the treatment of RA with upadacitinib. After a comprehensive work-up she was diagnosed with Strongyloidiasis although living in non-endemic region of the world. We emphasize the importance of regular follow-up of immunocompromised patients and raise awareness of not only typical but also atypical infections which can occur during the course of the disease.

Ruderal Plant Diversity as a Driver for Urban Green Space Sustainability

Urban development in south-eastern Europe has significant ecological consequences, such as a reduction in native plant diversity, the introduction of non-native species, and increased maintenance costs of urban green spaces. Achieving sustainable urban development requires a thorough understanding of the inventory of native plant species to better manage and conserve these areas. This study analyzed 806 vegetation surveys conducted in rural and urban areas over a 30-year period, identifying 450 plant species from 39 distinct plant communities. Our findings revealed generally low dominance index values in all communities, while Shannon diversity index values were particularly high, indicating rich species diversity despite urbanization pressures. Equality index values varied slightly, reflecting differences in species distributions. Principal component analysis (PCA) identified a substantial group of species with low abundance, which is essential for understanding and managing urban biodiversity. These findings have significant implications for urban planning and plant species conservation. Low dominance and high diversity suggest opportunities to improve urban green spaces by integrating diverse native species. In addition, the ecological and practical value of ruderal species, plants that thrive in disturbed environments, was emphasized, as well as their potential in medicine, phytoremediation, green roof design, and pollination services. Through directly correlating biodiversity indices with urban sustainability goals, our study provides useful insights for urban biodiversity management and the strategic integration of native plant species into urban landscapes.

Streetscapes and memories of real socialist anti-fascism in south-eastern Europe: between dystopianism and utopianism

Abstract Historical revisionism towards the Yugoslavian experience of real socialism is gaining ground in Croatia and Slovenia, as exemplified, for example, by the 2017 renaming of Zagreb’s Marshal Tito Square and similar cases in Šibenik or Karlovac, as well as parallel developments in Ljubljana. However, the spaces that once represented the Yugoslavian workers’ movement and the anti-fascist struggle can be also subject to nostalgic practices termed Titostalgia. This study employs an analysis inspired by a discourse-historical approach to scrutinize the arguments used in naming controversies in nine Croatian and Slovenian localities from 2011 to 2022. The investigation of semiotic landscapes draws from extensive fieldwork, including photographic documentation consisting of 1,658 images. Dystopian interpretations of Yugoslavia’s past turn out to be propagated through top–down discourses, circulating in media outlets and endorsed by local authorities through infrastructural signage. These discourses are typically initiated by civil society actors aligned with right and far right politics. Besides mild media opposition, which mainly invokes anti-fascist values, smaller urban centres exhibit passive resistance or inertia towards the renaming, observable in grassroots signage. Conversely, capital cities emerge as hubs of intense expressive and predominantly progressive ideological semiotic practices within the renamed spaces.

The international study of movement behaviours in the early years: A pilot study from Bosnia and Herzegovina

The World Health Organization (WHO) released guidelines for physical activity (PA), sedentary behavior, and sleep for children under 5 years of age in 2019, but there are no reports on the adherence to the guidelines in southeastern Europe. This study aimed to: (i) determine the proportion of preschool children (aged 3-5 years) who met the WHO guidelines and examine the feasibility of the proposed protocol for the SUNRISE study in Bosnia and Herzegovina (B&H), and (ii) define sex-, and urban/rural-living-specifics in movement-behaviors, anthropometrics, gross-motor-skills, fine-motor- skills, and cognitive-skills. The sample comprised 115 preschool children (63 girls and 52 boys), residing in urban (n = 66) and rural areas (n = 49) from B&H. Participants were tested on movement behaviors (PA, sleep time, screen time) by accelerometry and comprehensive questionnaires. Body height, weight, body mass index, executive function, fine-, and gross-motor skill, and cognitive function were also measured. The results showed that PA-, sleep duration-, and screen time guidelines were met by 64%, 74% and 53% of children, respectively, while only 23% of the children met all three guidelines on movement behaviors. Boys exhibited higher PA than girls, but no differences in gross- and fine motor skills and cognitive functioning were recorded between the sexes. Children living in urban and rural environments did not differ in any of the studied variables. Results evidenced preschool children from B&H being in line with other samples globally about study variables. Although PA was higher in boys than in girls it was not translated to differences in motor skills. Further studies on larger samples and other environments are warranted.

Jet stream controls on European climate and agriculture since 1300 ce

The jet stream is an important dynamic driver of climate variability in the Northern Hemisphere mid-latitudes1–3. Modern variability in the position of summer jet stream latitude in the North Atlantic–European sector (EU JSL) promotes dipole patterns in air pressure, temperature, precipitation and drought between northwestern and southeastern Europe. EU JSL variability and its impacts on regional climatic extremes and societal events are poorly understood, particularly before anthropogenic warming. Based on three temperature-sensitive European tree-ring records, we develop a reconstruction of interannual summer EU JSL variability over the period 1300–2004 ce (R2 = 38.5%) and compare it to independent historical documented climatic and societal records, such as grape harvest, grain prices, plagues and human mortality. Here we show contrasting summer climate extremes associated with EU JSL variability back to 1300 ce as well as biophysical, economic and human demographic impacts, including wildfires and epidemics. In light of projections for altered jet stream behaviour and intensified climate extremes, our findings underscore the importance of considering EU JSL variability when evaluating amplified future climate risk.

The God of Earthquakes: Several Hypotheses Related to One Dedicatory Inscription to Poseidon Asphaleios From Mesambria on Pontus

This article aims to present to the scientific community a dedicative inscription to the God Poseidon in his capacity as Asphaleios -Securer, embedded in one of the churches in Nessebar (Bulgaria)–St. Paraskeva Church. The inscription was found in 2013 during conservation-restoration works in the church. It is published for the first time here, and comments have been made on its connection with earthquakes and seaquakes in Southeastern Europe during so-called Hellenistic Period. The inscription is in the Doric dialect in four lines built in as a spolium on a recess above the altar apse on the church’s southern side in an upside-down position. Based on specific features of palaeography and orthography of the letters, the suggested dating is the second half of the 3rd and the beginning of the 2nd century BC. The epithet of the god in this inscription–Asphaleios is attested in other Dorian poleis; however, here, it cannot be connected with a temple to Poseidon. It was probably brought to Mesambria on Pontus from somewhere else; as exemplified with similar inscriptions originating from Kallatis (present-day Mangalia, Romania) and Dionysopolis (present-day Balchik, Bulgaria). The epiklesis in the mentioned inscriptions hints at the consequences of the seismic activity during the period comprising roughly the second quarter to the middle of the 3rd century BC that swept across Southeastern Europe and caused severe damage. Therefore, this inscription is another example of Poseidon being worshipped in his capacity of Securer and Earth-Stayer and being recognized as a symbol of hope for ancient people.

Association of SCN1A Polymorphisms rs3812718 and rs2298771 with Epilepsy.

Background/Objectives: Epilepsy is a brain disease with both environmental and genetic inputs. Ion channel dysfunction seems to be of great significance for abnormal neuronal behavior during epileptic seizures. Within neurons, the voltage-gated sodium channels are crucial proteins contributing to the initiation and propagation of action potentials. The voltage-gated sodium channel α subunit 1 (SCN1A) gene encodes for the α subunit of a voltage-gated ion channel. The aim of the study was to investigate the relation of two common SCN1A variants, i.e., rs3812718 and rs2298771, with distinct epileptic phenotypes in a South-Eastern European population. Methods: DNA was extracted from 214 unrelated participants with focal onset, focal to bilateral tonic-clonic, or generalized onset epileptic seizures and genotyped using real-time PCR (LightSNiP assays) followed by melting curve analysis. Statistical analysis of the results was performed using IBM SPSS Statistics software (version 29.0 for Windows). Results: Genotype frequency distribution analysis indicated an association for the A-allele-containing genotypes of both rs3812718 and rs2298771 polymorphisms of SCN1A with generalized onset seizures and focal to bilateral tonic-clonic seizures versus focal onset seizures. Conclusions: Consequently, the study provides evidence that supports a potential association of the investigated SCN1A polymorphisms with distinct seizure subtype susceptibility in South-Eastern Europeans.

The expression of the MIS 12 glacial stage in Southeastern Europe and its impact over the Middle Pleistocene hominins in Megalopolis Basin (Greece)

Southern Europe is hypothesized to have acted as a glacial refugium for hominin populations during the Pleistocene. Of particular importance is South-East Europe, which most likely played a dual role, both as refugium and dispersal corridor, especially during the Middle Pleistocene glaciations, when drastic climatic conditions led to major sea level drops in the Aegean. However, little is known about the palaeoenvironmental conditions at the time of hominin presence in this region, making these hypotheses difficult to test. Here we analyze biomarker data and leaf wax stable isotopic compositions of the MIS 12 Lower Palaeolithic site Marathousa 1 (Megalopolis Basin, Greece) to assess the climatic conditions accompanying the time of hominin presence in the area. Our data indicate a major cooling affecting the north Mediterranean/Aegean domain during this time interval, with lowest temperatures recorded between ∼440–432 ka. The glacial peak is associated with changes in vegetation (i.e., from more forested to more open landscape), reduction of humidity and water availability (i.e., moisture depletion, increased evaporation). Hominins are present at the Marathousa 1 location at the end of this interval (434–432 ka), confirming that the Megalopolis Basin served as a refugium for hunter-gatherer groups during periods of harsh climatic conditions. Additionally, the progressive cooling is associated with an important sedimentary hiatus between ∼465–440 ka reflected in all circum-Mediterranean records (both marine and continental), indicating a regional impact of the MIS 12 glaciation over surface processes.

Unsuccessful Peace-making: the Mission of Francesco da Collo and Antonio de Conti to Moscow (1518-1519)

This article explores the peace mission of Francesco da Collo and Antonio de Conti, envoys of Emperor Maximilian I of the Holy Roman Empire, to Grand Prince Vasily III of Moscow in 1518–1519. The mission aimed to mediate between Moscow and the PolishLithuanian Commonwealth, seeking to align both states for a planned united Christian campaign against the Ottoman Empire, whose expansion in Southeastern Europe posed a serious threat. The study centers on da Collo’s report from the mission, which not only chronicles the negotiations but also provides rare insights into Russian diplomacy and courtly traditions of the early 16th century. The article underscores the critical role of ceremonial practices, such as receptions, banquets, and hunts, in the diplomatic culture of the period.Particular focus is given to da Collo's accounts of his interactions with Vasily III and his entourage, highlighting the crucial importance of personal meetings and informal contacts in the diplomatic process of the time. Despite the envoys' efforts, the mission achieved only a temporary one-year truce, with insurmountable barriers to a comprehensive peace including territorial disputes—especially over the control of Smolensk—and the issue of repatriating Russian prisoners of war from Poland.Furthermore, da Collo’s report serves as an early illustration of how Muscovy was constructed as an eastern, despotic power, offering one of the first examples of Russia being depicted as the “Other” in early modern European thought. The study sheds light on the complex dynamics of diplomacy in this era and reveals how these interactions contributed to the broader European perception of Russia as an alien and adversarial state.

Polyploidisation and niche differentiation drive the diversification of the Euphorbia epithymoides group (Euphorbiaceae) in southeastern Europe

Species groups spanning large areas of southeastern Europe gained little attention in phylogenetic studies. We here inferred relationships within the Euphorbia epithymoides group, distributed across the Balkan Peninsula, the southeastern margin of the Alps, the Pannonian Basin, and the Carpathians, and explored how polyploidisation is related to environmental niche differentiation. We used an integrative approach, including phylogenetic analyses (AFLP fingerprinting, ITS sequencing), estimates of ploidy level based on relative genome size, multivariate morphometrics, environmental niche analyses and species distribution modelling. Dating analyses inferred the origin of the E. epithymoides group at the Miocene/Pliocene boundary. Environmental changes facilitated the main divergence within the group, leading to the polyploid origin of E. fragifera and its niche contraction to a warmer Mediterranean climate. Within the more widespread and mesophyllous E. epithymoides s.l., the main genetic divergence, although with considerable geneflow, occurred in the central Balkan Peninsula. It was not accompanied by pronounced morphological differentiation, but rather by significant divergence of genome sizes and environmental niches. Our results corroborate the niche shift hypothesis as one of the powerful mechanisms for overcoming the minority cytotype exclusion after polyploidisation. Distribution modelling highlights the importance of the southern and eastern Balkan Peninsula and the adjacent Carpathians for the large-scale long-term survival and persistence of mesophilous (forest) vegetation throughout the Pleistocene. With exception of distinct E. fragifera, all other taxa (E. epithymoides, E. gregersenii, E. lingulata) should rather be considered subspecies of widespread, morphologically and ecologically variable E. epithymoides.

Geospatial modeling of wildfire susceptibility on a national scale in Montenegro: A comparative evaluation of F-AHP and FR methodologies

Abstract Wildfires pose a significant ecological, environmental, and socioeconomic challenge in southeastern Europe. The preservation of wildlands is not only essential but also a foremost priority for Montenegro, a country recognized as the world’s first ecological state. Consequently, the development of optimal methodologies and models is of paramount importance to enhance fire protection measures. With this objective in mind, this study strives to create a wildfire susceptibility model on a national scale for Montenegro. The study employed seven natural and anthropogenic causative criteria: vegetation type; aspect; slope; elevation; climate classification; distance from road; and population. The modeling process integrates both natural and anthropogenic causal criteria, employing the Fuzzy Analytic Hierarchy Process (F-AHP) and Frequency Ratio (FR) within geoinformatics environment. The outcomes of the F-AHP model reveal that 72.84% of the total area is categorized as having high to very high susceptibility. Conversely, based on the FR model, only 29.07% of the area falls within these susceptibility levels. In terms of validation, the area under curvature values indicates good performance of the F-AHP model. In contrast, the FR model demonstrates poor performance. These novel findings, pertaining to Montenegro at a national scale, offer valuable insights for preemptive wildfire safeguarding efforts. Moreover, the methodologies employed, with necessary modifications, hold potential for application in geographically diverse regions.

Borders, regions, and identities in Central and South-Eastern Europe

Borders, regions, and identities in Central and South-Eastern Europe

The Balkans or South-Eastern Europe: a new conceptualization of the spatial and political image of the region (late 20<sup>th</sup> – early 2<sup>st</sup> century)

The author analyzes the process of geospatial diversification of the traditional historical and cultural Balkan region in the national discourses of a number of Balkan countries. It is based on the search for a new identity in the context of a strengthening European political orientation and the desire to minimize the existing negative image of the Balkans, associated in the European political tradition with the phenomenon of «Balkanization». The formulation of the concept of a new broader political space of South-Eastern Europe, the definition of which appeared at the beginning of the 19th century, is accompanied by the discussions in both public and academic circles in the states of the region regarding the combination of traditional cultural and historical identity traits and strengthening the political component that determines the course towards a «return to Europe» as a way out of the so-called geo-historical Balkan impasse. The search for a «geographical alternative» in the modern Balkans has acquired the character of a sharply expressed contrast between the so-called traditional historical Balkan realities and the new trend of Europeanization of this region. At the same time, the Balkan self-identification continues to be preserved in the public narrative in a number of countries, and it is adjacent to the definition of South-Eastern Europe that is increasingly gaining strength and has a wider geographical scope. It is this that allows to emphasize the historical ties of the Balkan peoples and their states with neighboring countries located in the «border zone» between the so-called classical Europe and its virtual periphery.

Pinus mugo Turra and its Therapeutic Potential: A Narrative Review

Pinus mugo Turra is a coniferous species of shrub or small tree typical of central and south-eastern Europe. It is commonly called mugo pine, mountain pine, or dwarf mountain pine referring to its habit and small size. Indeed, this plant lives at higher altitude above 1400 m above the see level where it deals with harsh conditions typical of high mountain. From an ethnotraditional point of view, P. mugo is mainly used for respiratory disorders and wound healing. In particular, its essential oils have been shown to possess interesting antimicrobial and antioxidant activities, which can substantiate its potential therapeutic effect in pulmonary and urinary tract diseases, as well as antinflammatory and antitumor effects. This review also offers a summary on the chemical constituents of P. mugo that contribute to its therapeutic potential.

Red Army operations 1944: are they appreciated in the historical memory of Russia?

Ten strategic offensives of the Workers’ and Peasants’ Red Army in 1944 (“Stalin’s ten offensives”) led to the liberation of vast territories in the western part of the USSR, the beginning of the cleansing of the “brown plague” of the countries of Eastern, Southeastern and Northern Europe, and the critical weakening of the Wehrmacht itself. Nevertheless, these events have not yet received sufficient attention in the politics of Russia`s historical memory. When referring to the lists of days of military glory, hero cities, cities of military glory, as well as art cinema, it turned out that no more than half of the 10 key operations of 1944 were noted. The focus is on the campaigns of 1943, when the mass liberation of the territories of the USSR began, and 1945 when there was the final surrender of the Third Reich. Russian society perceived 1944 only as an intermediate stage, although eventful, but not so bright. It is also important that in 1944, not only the territories of the RSFSR were already liberated, but the Union`s republics located to the west, which became independent states after the collapse of the USSR. Currently, Western policy, together with the policy of the Kiev regime, is trying to turn the coverage of the Red Army’s liberation role into a purely national agenda of Russia. The article suggests possible solutions to this problem which are the expanding the list of days of military glory due to the landmark dates of 1944 and the establishment of a day of complete liberation from Nazi occupation of each subject of the Russian Federation, as well as close coordination in this area with Belarus and Serbia.

The forgotten wartime letters of Abraham Benaroya (1943–1945): an unusual story of Jewish resistance in Greece and Nazi-Germany

ABSTRACT Focusing on Abraham Benaroya, a prominent labor leader in southeastern Europe, this research examines his experiences during World War II, a period often neglected in prior studies. Existing scholarship has predominantly highlighted Benaroya's contributions to the Pan-Hellenic labor movement from 1909 to 1924/5, incorrectly assuming that his removal from political power signaled the end of his influence on both Jewish and non-Jewish historiography; however, his wartime writings challenge this notion, revealing a compelling story of individual and familial resistance against Nazi Germany. During the tumultuous years of 1942–1945, amidst the Nazi occupation in Greece, Benaroya's fate took a unique turn. Despite being Jewish, he avoided extermination, and as a Greek Socialist activist he escaped execution and survived internment in various German prisoner-of-war camps. By employing the biographical turn approach and exploring Benaroya's forgotten Holocaust-era letters from captivity, this study presents a narrative of Greek-Jewish individual and familial struggles, choices, and resilience. In doing so, it contributes fresh perspectives to the current bottom-up scholarship, which moves beyond the generalized narrative of Jewish passivity. Instead, the current study offers a profound discourse on the complexities of Jewish survival and resistance under the extraordinary circumstances of the Nazi regime in Occupied Greece.

Genetically divergent 'Candidatus Phytoplasma solani' isolates in Croatian vineyard pathosystems suggest complex epidemiological networks

'Candidatus Phytoplasma solani’ (CPs), a phytoplasma endemic to the Euro-Mediterranean basin is a causative agent of several plant diseases, including the grapevine yellows disease “bois noir” (BN). As different CPs strains have been shown to have different ecological reservoirs and pathways for spread, the genetic characterization of CPs strains is a prerequisite, and better control of BN relies on the identification of reservoir plants. The variability of the phytoplasma genotypes involved in the BN pathosystem in Croatian vineyards was assessed by a multilocus sequence typing (MLST) approach. The genotyping was performed on selected grapevine, wild plants, and insects collected within the eleven years of national survey conducted in all Croatian viticultural regions. The extensive tuf, secY, stamp, and vmp1 genes-based MLST analyses revealed two new genotypes for stamp and vmp1 genes, designated as ST59 and V28, respectively, and overall identified 28 different CPs MLST genotypes. The prevalent MLST genotype in grapevine CPsSqt21 (S6/ST6/V18/tuf-b2) was widespread in nine counties across Uplands, Slavonia, and Danube wine regions and was affiliated to the known vector Hyalesthes obsoletus and to Urtica dioica. The other two most frequent genotypes were the U. dioica-associated CPsSqt28 (S39/ST46/V3/tuf-a) and the C. arvensis-associated CPsSqt2 (S1/ST9/V4/tuf-b1). CPs of different vmp1 genotypes was also detected in Cixius wagneri specimens originating from different parts of Croatia. In addition, CPs was detected in several Dichtyophara europaea insects and in two new potential plant reservoirs Ailanthus altissima and Robinia pseudoacacia. The substantial number of found MLST genotypes indicates the presence of several independent epidemiological cycles and is certainly a consequence of a unique geographical position of Croatia, bridging the different eco-climatic areas of central and south-eastern Europe.

Adverse event assessment in a parenting programme: experiences from a multisite randomised controlled trial

BackgroundClinicians and researchers should consider the expected benefits and potential harms of an intervention. Parenting programmes are a widely used evidence-based intervention for child behaviour problems. However, few data are available on potential negative effects. The aims of this paper were to increase systematic knowledge of adverse event (AE) assessment in parenting programmes and to provide an AE assessment tool.MethodsAs part of the RISE project (prevention of child mental health problems in South-eastern Europe—adapt, optimise, test and extend parenting for lifelong health), we developed and tested an AE assessment procedure in three sequential studies for parents of children with child behaviour problems aged 2 to 9 years in North Macedonia, Republic of Moldova, and Romania. This paper reports on the development of the assessment tool in phase 1 (N = 140), phase 2 (N = 835), and the final experiences with using the optimised procedures in phase 3 (multisite randomised controlled trial, N = 823) in which AEs were assessed before, three times during intervention delivery, and at 1 year follow-up. At each time point, the participants completed a 12-item AE checklist. If moderate-to-severe problems of parent or child were reported, a structured follow-up interview was conducted.ResultsThe response rate on the AE assessment tool increased from 6% (phase 1) to 100% (phase 3) indicating improvement in collecting these data based on the experiences of each phase. Results of the RCT (phase 3) showed generally low (S)AE frequencies with the finally optimised procedure: During the intervention, no serious adverse events (SAE) were registered; at least one AE was reported by 10% (after the first session), 7% (after the third session), and 4% (after the last fifth session) of participants. None of the identified (S)AEs was causally related to the study or intervention. Cost–benefit considerations are needed to determine the best way to ensure participant safety in parenting programmes.ConclusionThe applied active AE assessment procedure provides a comprehensive AE assessment tool that can be used by others—with adaptations for the specific context, if needed. Based on our experiences, we outline recommendations for future studies.Trial registrationClinicalTrials.gov, registration number phase 1: NCT03552250; phase 2: NCT03865485, phase 3: NCT04721730. Registered on 13 January 2021.

Expanding European protected areas through rewilding

Rewilding seeks to address biodiversity loss by restoring trophic interactions and fostering self-regulating ecosystems. Although gaining traction in Europe and North America, the extent to which rewilding can meet post-2020 protected-area targets remains uncertain. We formulated criteria to map suitable areas for rewilding by identifying large tracts of land with minimal human disturbances and the presence of key mammal species. We find that one-quarter of Europe, approximately 117 million hectares (ha), is compatible with our rewilding criteria. Of these, 70% are in cooler climates. Passive rewilding opportunities, focused on managing existing wilderness, are predominant in Scandinavia, Scotland, the Iberian Peninsula, and notably in the Baltic states, Ireland, and southeastern Europe. Active rewilding opportunities, marked by reintroduction of absent trophic guilds, are identified in Corsica, Sardinia, southern France, and parts of the Netherlands, Denmark, Sweden, and Norway. Our mapping supports European nations in leveraging land abandonment to expand areas for nature conservation, aligning with the European Biodiversity Strategy for 2030. Nevertheless, countries with limited potential for rewilding should consider alternative conservation strategies.