Greek Island Of Lesvos Research Articles

Long-term stability of extra virgin olive oil: effects of filtration and refrigeration storage on the Kolovi variety.

The composition of extra virgin olive oil (EVOO) defines its sensory, nutritional, and human health benefits, and distinguishes it as a key component of the Mediterranean diet. Nevertheless, EVOO constituents are susceptible to degradation during processing and storage, which reduces the olive oil's quality and limits its shelf life. The present study investigated the effect of molecular filtration before storage and the effect of cool storage at 4 °C on the stability of 'Kolovi' EVOO, a variety originating from the Greek island of Lesvos, over a 24 month period. Storing EVOO at 4 °C positively affected free acidity, peroxide value, K268, fruity qualities, and concentrations of hydroxytyrosol, tyrosol, ligstroside aglycone, lutein, and squalene, in comparison with the control sample stored at room temperature, particularly after 1 year. Molecular filtration significantly affected the ratio of unsaturated fatty acids to saturated fatty acids (UFAs/SFAs). Optimal preservation of parameters such as acidity value and lutein content was achieved by combining molecular filtration with refrigeration. The present study recommends storing EVOO in the refrigerator for up to 18 months. Based on the regulatory limits of the quality characteristics of acidity, peroxide value, K232 value and fruity sensory attributes, the shelf-life of the protected geographical indication (PGI) 'Kolovi' EVOO can reach 2 years under cool storage (4 °C) and with molecular filtration before storage. © 2024 The Author(s). Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

‘Now You See Me’: Refugees Looking Back at the EU’s Border Camp Watch in Lesvos

ABSTRACT In this article, we explore refugees’ countervisuality, an emancipatory protest against the visuality of border watchers. Focusing on the social media campaign ‘Now You See Me, Moria’, led by refugees in the Moria camp on the Greek island of Lesvos, we examine their digital rights claims against camp conditions and the EU-funded new Closed Controlled Access Centre. By analysing refugee-produced images and captions shared online, we unpack how refugees challenge the Greek authorities’ watching out for, of, and over refugees. Our findings indicate a power struggle wherein the authorities employ invisibilisation to shield the camp from external scrutiny while hypervisibilising and disciplining refugees inside the camp, proudly advertised and visibilised to the wider public as exemplary. We clarify how refugees strive to look back, be seen, and be recognised by a transnational audience in their just call for decriminalisation and humanisation, countering the authorities’ visuality regime. We conclude by discussing the significance of emancipating our ways of seeing refugees from an anti-democratic visuality regime imposed by state authorities.

Bees display limited acclimation capacity for heat tolerance.

Bees are essential pollinators and understanding their ability to cope with extreme temperature changes is crucial for predicting their resilience to climate change, but studies are limited. We measured the response of the critical thermal maximum (CTMax) to short-term acclimation in foragers of six bee species from the Greek island of Lesvos, which differ in body size, nesting habit, and level of sociality. We calculated the acclimation response ratio as a metric to assess acclimation capacity and tested whether bees' acclimation capacity was influenced by body size and/or CTMax. We also assessed whether CTMax increases following acute heat exposure simulating a heat wave. Average estimate of CTMax varied among species and increased with body size but did not significantly shift in response to acclimation treatment except in the sweat bee Lasioglossum malachurum. Acclimation capacity averaged 9% among species and it was not significantly associated with body size or CTMax. Similarly, the average CTMax did not increase following acute heat exposure. These results indicate that bees might have limited capacity to enhance heat tolerance via acclimation or in response to prior heat exposure, rendering them physiologically sensitive to rapid temperature changes during extreme weather events. These findings reinforce the idea that insects, like other ectotherms, generally express weak plasticity in CTMax, underscoring the critical role of behavioral thermoregulation for avoidance of extreme temperatures. Conserving and restoring native vegetation can provide bees temporary thermal refuges during extreme weather events.

The Prevalence of Congenitally Missing Permanent Teeth in a Sample of Orthodontic and Non-Orthodontic Caucasian Patients.

Hypodontia represents a notable clinical and public health concern. To assess the prevalence of congenitally missing permanent teeth in a sample of orthodontic/dental patients of Caucasian origin originating from the Greek island of Lesvos. Panoramic X-rays from 621 children and adolescents, aged 9 to 16 years (average age 12.5 years), 521 seeking orthodontic care (orthodontic group) and 100 seeking dental care (non-orthodontic group) were examined to identify congenitally missing permanent teeth. The orthodontic group exhibited a 5.5% prevalence of congenitally missing permanent teeth (2.8% females; 2.7% males), while the non-orthodontic group showed a prevalence of 4% (3% females; 1% males). The descending order of prevalence for missing tooth types was as follows: lower second premolars, upper laterals, lower central incisors, lower canines, upper second premolars, and lower second molars. Among orthodontic patients with missing teeth, 62% presented with an Angle's Class II malocclusion. Hypodontia was most frequently observed in the mandible. No statistically significant differences were observed between the orthodontic and non-orthodontic groups in terms of the percentage of children and types of congenitally missing teeth. Congenitally missing teeth were observed in about 4-5% of the studied population with a female predilection. The lower second premolar was the most commonly absent tooth, followed by the maxillary lateral incisors. An Angle's Class II malocclusion was present in the majority of orthodontic patients with hypodontia, mostly in the mandible.

Transient communities: The case of a refugee choir in the Catholic church of Lesvos — Eirini Papanikolaou, Jennifer Sherrill & Antonis Ververis

For many refugees fleeing conflict in the Middle East and Africa, the Greek island of Lesvos is the first point of entry into the European Union. However, due to an agreement between the European Union and Turkey declared in March of 2016, people crossing the Aegean Sea without formal travel documents would be detained on the Greek islands until their asylum applications were examined. This bureaucratic slowdown trapped refugees on Lesvos for months and years of unknown waiting. At the same time, the arrival of refugees from various African countries led to a flourishing of the small Catholic church in the capital city, Mytilene. In 2017, a parish choir was established by Congolese refugees with the purpose of providing a refuge to members who sought a sense of community, spirituality, and normality. Through interviews, participatory observation, and polyvocal ethnography, we address the following research areas: the importance of spirituality in the lives of refugees, how participation in the choir helped them to feel a sense of community, and the use of choral singing as a form of integration. More specifically, we discuss how the refugee-initiated autonomous aspect of the choir created an environment in which each member had a personal stake in developing and caring for the choir community as a whole. As a majority of the interviewees felt that singing for God was the highest purpose, participation in this choir helped members connect to their faith while also giving a much-needed sense of purpose in uncertain times.

Necroharms: the normalisation and routinisation of social death in refugee camps on the Greek Island of Lesvos

ABSTRACT This paper explores the consequences of the necropolitical border regime on border crossers’ lives on the Greek island of Lesvos. It focuses on the manifold abandonments (left-to-die practices) that border crossers experience inside and beyond the refugee camps and detention centres, arguing that this inhuman and degrading treatment inflicts, normalises and naturalises disposability, humiliation, and social death. The paper combines a social harm approach, critical migration and border studies, and insights from anthropology to analyse border crossers’ lived experiences of violence. In doing so, the paper contributes to the growing literature on the politics of abandonment and disposability as a modus operandi of migration governance. It also expands on social harm typologies by introducing a new conceptual category of harm which I term ‘necroharms’.

A causal model for creating public value (in institutional voids)—the case of Lesvos

The Greek island of Lesvos is a holiday destination that became the main entry point for forced migrants to Europe during 2015 and 2016. These circumstances of disruptive societal change are used as the basis for developing a causal and dynamic model that creates public value in institutional voids.The clash between a holiday location and a humanitarian-ecological disaster and the fact that volunteers were the frontline response at the border of the EU in a politically complex situation made this, at the time, a very special case. The attention of celebrities and the media, Lesvos’ geographical proximity to Turkey, the historical conflicts between the two neighbouring countries, the lack of interaction between local people and the involvement of international NGOs spurred conflicts between various actors, causing social fragmentation on the island.The model identifies the core aspects of strengthening social capital and building trust to counter such societal fragmentation. Following Archer’s morphogenetic approach as a meta-concept, and the identification of causalities for understanding the social dynamics on Lesvos as a starting point, an extended version of Moore’s public value concept was used to build the empirical basis for the development of the model.The model presented can be used to distinguish between three very separate pathways of creating public value. I call this public value (PV) outcome creation. These pathways are described separately by using causal loop diagrams (CLDs). When aligned, they suggest a causal understanding of how adaptive leadership and collaborative governance can be a core element and a generative mechanism of social change that creates public value.Although the paper draws on a case study that is relevant to migration studies, it is not a migration study, but rather an attempt to use and improve “social-theory reflection” by applying a systems thinking approach as we embark on addressing public value creation, social problems and social-systems transformation (in institutional voids).

Estimating Productivity, Detecting Biotic Disturbances, and Assessing the Health State of Traditional Olive Groves, Using Nondestructive Phenotypic Techniques

Conservation of traditional olive groves through effective monitoring of their health state is crucial both at a tree and at a population level. In this study, we introduce a comprehensive methodological framework for estimating the traditional olive grove health state, by considering the fundamental phenotypic, spectral, and thermal traits of the olive trees. We obtained phenotypic information from olive trees on the Greek island of Lesvos by combining this with in situ measurement of spectral reflectance and thermal indices to investigate the effect of the olive tree traits on productivity, the presence of the olive leaf spot disease (OLS), and olive tree classification based on their health state. In this context, we identified a suite of important features, derived from linear and logistic regression models, which can explain productivity and accurately evaluate infected and noninfected trees. The results indicated that either specific traits or combinations of them are statistically significant predictors of productivity, while the occurrence of OLS symptoms can be identified by both the olives’ vitality traits and by the thermal variables. Finally, the classification of olive trees into different health states possibly offers significant information to explain traditional olive grove dynamics for their sustainable management.

Sexual violence against migrants and asylum seekers. The experience of the MSF clinic on Lesvos Island, Greece.

Sexual violence can have a destructive impact on the lives of people. It is more common in unstable conditions such as during displacement or migration of people. On the Greek island of Lesvos, Médecins Sans Frontières provided medical care to survivors of sexual violence among the population of asylum seekers. This study describes the patterns of sexual violence reported by migrants and asylum seekers and the clinical care provided to them. This is a descriptive study, using routine program data. The study population consisted of migrants and asylum seekers treated for conditions related to sexual violence at the Médecins Sans Frontières clinic on Lesvos Island (September 2017-January 2018). There were 215 survivors of sexual violence who presented for care, of whom 60 (28%) were male. The majority of incidents reported (94%) were cases of rape; 174 (81%) of survivors were from Africa and 185 (86%) of the incidents occurred over a month before presentation. Half the incidents (118) occurred in transit, mainly in Turkey, and 76 (35%) in the country of origin; 10 cases (5%) occurred on Lesvos. The perpetrator was known to the survivor in 23% of the cases. The need for mental health care exceeded the capacity of available mental care services. Even though the majority of cases delayed seeking medical care after the incident, it is crucial that access to mental health services is guaranteed for those in need. Such access and security measures for people in transit need to be put in place along migration routes, including in countries nominally considered safe, and secure routes need to be developed.

Effect of pan trap size on the diversity of sampled bees and abundance of bycatch

Monitoring pollinator health and pollination is among the top priorities to safeguard pollinators and secure pollinator services. Assessments of sampling methods are therefore essential for developing a standardized protocol for long-term pollinator monitoring. Pan trapping is a popular technique to survey pollinators, but limited information is available on the effect of pan trap diameter on the abundance, richness, and body size of sampled bees, as well as on the abundance of bycatch (non-targeted arthropods). We conducted experiments using four diameters of yellow pan traps in three habitats (a semi-natural phrygana habitat, a roadside, and a salt flat) on the Greek island of Lesvos during a 10-day period in late June/early July of 2017 and 2018. We found that pan traps of 4, 7, 10, and 12 cm captured a similar richness of bees and have little or no effect on the abundance estimates of bees and flies. Pan trap diameter did not affect body size of collected bees. Bycatch accounted for 62.8% of the arthropods collected and increased with the diameter of the pan traps in the phrygana and roadside habitats. According to literature, many researchers, especially outside Europe, use pan traps of various diameters (7–34 cm), volumes (96.1–2000 ml), and shapes (round, square, rectangular, or hexagonal). To reduce potential negative effects on populations of other beneficial arthropods, as well as to minimize processing effort and costs, we recommend using small pan traps (7 cm), unless standardized pan trapping protocols have already been adopted.

Thermal tolerance varies with dim‐light foraging and elevation in large carpenter bees (Hymenoptera: Apidae: Xylocopini)

1. Thermal tolerance has a strong predictive power for understanding the ecology and distribution of organisms, as well as their responses to changes in land use and global warming. However, relatively few studies have assessed thermal tolerances for bees.2. The present study aimed to determine whether the critical thermal maximum (CTmax) of carpenter bees (Apidae: genus Xylocopa Latreille) varies with different patterns of foraging activity and elevation. In addition, the influence of body size, body water content and relative age was examined with respect to their CTmax and differences in thoracic temperature (Tth) among species were evaluated.3. The CTmax of one crepuscular (Xylocopa olivieri) and two diurnal species (Xylocopa violacea and Xylocopa iris) of carpenter bees was assessed at sea level on the Greek island of Lesvos. To detect variation as a result of elevation, the CTmax of a population of X. violacea at 625 m.a.s l. was assessed and compared with that from sea level.4. Xylocopa olivieri displayed a similar CTmax to that of X. violacea but lower than that of X. iris. Body size, body water content, and relative age did not affect CTmax. In X. violacea, CTmax decreased with elevation and all three species have high Tth independent of ambient temperatures.5. The results of the present study are consistent with variations in CTmax predicted by broad spatial and temporal patterns reported for other insects, including honey and bumble bees. The implications of the results are discussed aiming to understand the differences in the foraging pattern of these bees.

Writings on the Wall: Textual Traces of Transit in the Aegean Borderscape

The Greek island of Lesvos has a centuries-old history as a site of departure, arrival, coexistence and resistance for the forcibly displaced. This migratory chronology, however, was overwritten by the unprecedented attention that Lesvos attracted during the 2015 ‘refugee crisis’. This paper examines vernacular aspects of bordering, specifically the practice of border crossers and other groups standing in solidarity with—or against—them, to inscribe messages on walls in and around carceral and public spaces, viewed as a process of constructing and contesting borders from below. Closely reading numerous inscriptions collected around Lesvos reveals how borders are constructed, enacted and contested from below through borderlanders’ discursive practices on some of the very walls that constitute the EU frontier’s material infrastructure. This study aims to advance understandings of the historical continuity of the Aegean borderscape as a complex landscape of border effects and affects that exceed borders’ legal, infrastructural and political dimensions, while also highlighting the persistence and importance of personal agency, self-authorship and identity reclamation by border populations even in the direst of circumstances.

Civil society between void and action – the case of refugee support on Lesvos

ABSTRACTThe Greek island of Lesvos, a holiday destination, became the main entry point for forced migrants to Europe in the fall 2015. The role that civil society has played in tackling the forced migration crisis on Lesvos, like in many other places in the EU, has been immense. However, the sheer number of refugees arriving, the interplay between local and international initiatives, conflicts between actors, the specific, and often one-sided, attention of the media, the clash between the holiday location and the humanitarian- ecological disaster and the fact that volunteers were the frontline response at the border of Europe for quite some time makes this a special case. Geuijen et al. [2016. “Creating Public Value in Global Wicked Problems.” Public Management Review 19 (5): 621–639. doi:10.1080/14719037.2016.1192163] explored if the Public Value theory by Moore [1995. Creating Public Value: Strategic Management in Government. Cambridge: Harvard University Press] could be useful in guiding analysis and action with respect to situations as experienced on Lesvos. Bryson et al. [2016. “Towards A Multi-Actor Theory of Public Value Co-Creation.” Draft submission to Public Management Review. Accessed November 2017. https://brage.bibsys.no/xmlui/bitstream/handle/11250/2433237/Sorensen.pdf?sequence=2&isAllowed=y] has called for a modification of the theory of public value, in particular the strategic triangle framework, to adapt it to a more complicated world and building a more general theory of public value creation. In this article a conceptual model will be presented that builds on Moore's Public Value but, extended to help deal with the complexity of situations like on Lesvos.

Escape to the island: International volunteer engagement on Lesvos during the refugee crisis

ABSTRACTAs hundreds of thousands of refugees and migrants haphazardly crossed the strait between Turkey and the Greek island of Lesvos on their way to safety in Europe in 2015, thousands of citizens from all over Europe temporarily abandoned their day jobs to be of some sort of assistance for the refugees as they arrived on the beaches of Lesvos. We analyze the process and the relationships between the various stakeholders who were involved in the refugee crisis between April 2015 and January 2018, arguing that there is a need to find new ways of managing this type of spontaneous volunteerism without on the one hand strangling flexible and innovative volunteering initiatives, and on the other hand without compromising knowledge-based humanitarian responses.

Epidemiology of First Epileptic Seizures in the Northern Aegean Island of Lesvos, Greece.

We aimed at establishing the epidemiologic profile of first epileptic seizures (FES) in the Greek island of Lesvos. During a 1-year period (01/06/2010 to 31/05/2011), cases of FES admitted to the Lesvos General Hospital/addressed by general practitioners/private neurologists were prospectively identified. A total of 45 cases (30 males and 15 females; mean age ± SD of 59.4 ± 28.4 and 58.9 ± 26.8 years, respectively), were collected. The FES incidence rate was 52.1 (95% CI 37-67) per 105 persons. Provoked and unprovoked FES had an incidence of, 16.2 and 35.9 cases per 105 persons, respectively. Following age-adjustment to the 2000 US census population, incidence rates of FES (all types combined) were, 40.5 (95% CI 28-56) per 105 persons. Cerebrovascular disease (CVD) was the most prevalent etiologic factor. The present findings indicate a low-ranking incidence of FES in the studied population and highlight CVD as a leading causative factor.

Bee visitors of Centaurea solstitialis L. (Asteraceae) in an urban environment in northwestern Turkey

Information on the pollination ecology and floral visitors of the noxious weed Centaurea solstitialis is available for several populations in its invasive range, but limited information is available in its native range, with most studies conducted on the Greek island of Lesvos. Herein, we document the visitation pattern of bees and explore the relationship of bee body size and nectar availability in weedy populations of C. solstitialis from an urban environment within its native range in northwestern Turkey. Studies were conducted at patches of C. solstitialis in abandoned lots at the Uludag University near the city of Bursa. A total of 41 species, including honey bees, belonging to five families and 19 genera were recorded. Small megachilid and halictid bee species were the most common visitors. Average nectar standing crop volume per floret was low (0.003–0.117 μL) and did not significantly vary throughout the day. Average bee head width significantly correlated with average nectar standing crop volume but did not significantly change throughout the day. Analyses of pollen loads as well as direct observations of bee foraging behavior indicate that a large number of bees visit C. solstitialis, primarily in search of nectar while carrying a large percentage of pollen grains of this plant species on their bodies. These results are similar to previous observations on a non-weedy population of C. solstitialis from the island of Lesvos.

Drugs of abuse and alcohol consumption among different groups of population on the Greek Island of Lesvos through sewage-based epidemiology

The occurrence of 22 drugs of abuse, their metabolites, and the alcohol metabolite ethyl sulphate was investigated in raw sewage samples collected during the non-touristic season from three sewage treatment plants (STPs), which serve different sizes and types of population in the Greek island of Lesvos. Using the sewage-based epidemiology approach, the consumption of these substances was estimated. Five target analytes, cocaine (COC), benzoylecgonine (BE), 3,4-methylenedioxymethamphetamine (MDMA), 11-nor-9-carboxy-delta-9-tetrahydrocannabinol (THC-COOH) and ethyl sulphate (EtS) were detected at concentrations above their limit of quantification, whereas the rest eighteen target compounds were not detected. THC-COOH was detected in most of the samples with concentrations ranging between <20 and 90ngL−1, followed by EtS (range <1700–12,243ngL−1). COC, BE, and MDMA were present only in the STP that serves Mytilene (the main city of the island), at mean concentrations of 3.9ngL−1 for COC (95% CI: 1.7–6.1), 9.4ngL−1 for BE (95% CI: −1.6–23) and 3.2ngL−1 for MDMA (95% CI: 1.2–5.1). Back-calculations to an amount of used substance indicated more intense use of drugs among city population than rural and University population with average values of 9.5 and 1.2mgday−1 per 1000 inhabitants for COC (95% CI: −1.43–20.4) and MDMA (95% CI: 0.52–1.85), respectively, and 2.8gday−1 per 1000 inhabitants for tetrahydrocannabinol (THC) (95% CI: 2.4–3.1), the active ingredient of cannabis. Alcohol consumption was observed to be higher in the city population (5.4mL pure alcohol per day per inhabitant) than in the rural population (3.4mL pure alcohol per day per inhabitant), but the difference was not statistically significant. Consumption of THC differed significantly among the three STPs.

Exploring the Role of Ad Hoc Grassroots Organizations Providing Humanitarian Aid on Lesvos, Greece.

Introduction: Syrian refugees displaced into Turkey have attempted high-risk sea migrations to reach safer destinations in Europe, most often initially arriving on the Greek island of Lesvos. These refugees were often in need of basic humanitarian assistance that has been provided in part by a new category of ad hoc grassroots organizations (AHGOs). The aim of this study was to understand the internal and external operations of these AHGOs and their role on Lesvos.Methods: The experiences of AHGOs were investigated through a qualitative research design utilizing semi-structured interviews with organization leaders and spokespersons. AHGOs identified through media and social media sources as new Lesvos-specific organizations were purposively invited to complete an interview over phone, Skype or email. Data analysis of the transcribed interviews was performed by Systematic Text Condensation.Results: Forty-one organizations were contacted and 13 interviews were conducted. Most organizations were formed in autumn 2015 responding to the greater influx of refugees and migrants at that time and reported an absence of professional humanitarian agencies providing aid on Lesvos. Three categories emerged from the material. Features of organizations; Features of volunteers and; Evolution of AHGOs. The organizations perceived themselves capable of evaluating needs, mobilizing resources, funding and providing quick response. The volunteers came with limited humanitarian experience and from a wide variety of nationalities and professional backgrounds, and the organizations developed while on Lesvos.Discussion: Knowledge from our findings of AHGOs response to this complex disaster on Lesvos could be utilized in future catastrophes. We conclude that AHGOs may prove effective at providing humanitarian aid in a surge response when international non-governmental organizations are unable to respond quickly. In future complex disasters AHGOs should be recognized as new humanitarian actors and conditions should be made favourable for their operations.

The role of NIMBY in opposing the siting of wind farms: evidence from Greece

This paper aims to assess the relative importance of a NIMBY (‘Not-In-My-Back-Yard’) stance on an individual's opposition to the siting of a wind farm vis-à-vis other predictors, such as perceived effects (costs, risks and benefits associated with the project), perceived fairness of the siting decision and societal trust. Data originate from two case studies, a small wind farm of just two wind turbines in southern Greece and a mega-project of 153 turbines on the Greek island of Lesvos (aggregate N = 334). We use structural equation modelling (SEM) for testing the theoretically-suggested relations between the various constructs. We find that NIMBY is not the most important predictor of opposition while it is strongly correlated with other predictors, such as the perceived unfairness of the siting decision as well as the risks and costs associated with the wind farm. These latter findings undermine the common-sense idea that wishing a wind farm out of one's vicinity (‘Not-In-My-Back-Yard’) is an example of mere ‘free-riding’. Since the fit of the SEM models was found to be moderate, we discuss the limitations of our study and the implications of our findings as well as suggesting pathways for future research.

Intracellular eukaryotic pathogens in brown macroalgae in the Eastern Mediterranean, including LSU rRNA data for the oomycete Eurychasma dicksonii.

For the Mediterranean Sea, and indeed most of the world's oceans, the biodiversity and biogeography of eukaryotic pathogens infecting marine macroalgae remains poorly known, yet their ecological impact is probably significant. Based on 2 sampling campaigns on the Greek island of Lesvos in 2009 and 1 in northern Greece in 2012, this study provides first records of 3 intracellular eukaryotic pathogens infecting filamentous brown algae at these locations: Eurychasma dicksonii, Anisolpidium sphacellarum, and A. ectocarpii. Field and microscopic observations of the 3 pathogens are complemented by the first E. dicksonii large subunit ribosomal RNA (LSU rRNA) gene sequence analyses of isolates from Lesvos and other parts of the world. The latter highlights the monophyly of E. dicksonii worldwide and confirms the basal position of this pathogen within the oomycete lineage (Peronosporomycotina). The results of this study strongly support the notion that the geographic distribution of the relatively few eukaryotic seaweed pathogens is probably much larger than previously thought and that many of the world's marine bioregions remain seriously undersampled and understudied in this respect.