Browsing by Author "Sfenthourakis, Spyros"
Now showing items 21-40 of 77
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Does by-catch pose a threat for the conservation of seabird populations in the southern ionian sea (eastern Mediterranean)? A questionnaire-based survey of local fisheries
Karris, Georgios; Fric, Jakob; Kitsou, Z.; Kalfopoulou, J.; Giokas, Sinos; Sfenthourakis, Spyros; Poirazidis, K. (2013)A significant number of studies worldwide have shown that incidental catches (by-catch) of seabirds in fishing gear might pose a considerable risk for the conservation of their populations. Nevertheless, reliable data on ...
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The Eastern Mediterranean fish fauna from the Piacenzian deposits of Polis Graben (Cyprus Island)
Agathangelou, Angelos; Agiadi, Konstantina; Tsiolakis, Efthymios; Sfenthourakis, Spyros; Iliopoulos, George (2022-04)The Mediterranean fish fauna has been affected by the basin changing connections with surrounding seas and climatic changes throughout the geological history of the region. During the Eocene, the area corresponding to the ...
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Environment shapes the digestive performance in a Mediterranean lizard
Karameta, E.; Gourgouliani, N.; Kouvari-Gaglia, D.; Litsi-Mizan, V.; Halle, S.; Meiri, S.; Sfenthourakis, Spyros; Pafilis, P. (2017)An efficient digestive system is of pivotal importance for survival as it governs the energy flow from the environment to organisms. Reptiles require relatively little energy, and their digestive system can readily respond ...
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Estimating the population size of Scopoli's Shearwaters (Calonectris diomedea) frequenting the Strofades islands (Ionian Sea, western Greece) by raft counts and surveys of breeding pairs
Karris, Georgios; Xirouchakis, Stavros M.; Grivas, C.; Voulgaris, M. -D; Sfenthourakis, Spyros; Giokas, Sinos (2017)The Strofades Island complex in the Ionian Sea comprises two small islands, i.e. Stamfani and Arpyia, and several rocks. The islands host a significant Scopoli's Shearwater (Calonectris diomedea) colony, which is regarded ...
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Factors affecting plant species richness and endemism on land-bridge islands - An example from the East Aegean archipelago
Panitsa, M.; Trigas, P.; Iatrou, G.; Sfenthourakis, Spyros (2010)The native flora and a number of environmental factors were recorded for twenty islands in the eastern Aegean archipelago (Greece) in order to study the patterns of native and endemic plant species diversity as well as the ...
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Factors influencing the occurrence of Eleonora's falcon Falco eleonorae breeding colonies on Greek islands
Kassara, Christina; Fric, Jakob; Sfenthourakis, Spyros (2013)During the breeding seasons of 2004-2006, the population of Eleonora's falcon Falco eleonorae was censused on > 900 islands in the Ionian and the Aegean Seas, Greece. However, only one third of the islands hosted breeding ...
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From plots to islands: Species diversity at different scales
Sfenthourakis, Spyros; Panitsa, M. (2012)Aim To investigate how plant diversity of whole islands ('gamma') is related to alpha and beta diversity patterns among sampling plots within each island, thus exploring aspects of diversity patterns across scales. Location ...
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From sampling stations to archipelagos: Investigating aspects of the assemblage of insular biota
Sfenthourakis, Spyros; Giokas, Sinos; Tzanatos, Evangelos (2004)Aim To investigate the formation of nestedness and species co-occurrence patterns at the local (sampling station), the intermediate (island group), and the archipelago scale. Location The study used data on the distribution ...
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Functional response and multiple predator effects of two generalist predators preying on Tuta absoluta eggs
Michaelides, Georgios; Sfenthourakis, Spyros; Pitsillou, Maria; Seraphides, Nicos (2018)BACKROUND: Interactions among invertebrate predators could affect a pest suppression. The hemipteran species Macrolophus pygmaeus (Rambur) and Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) are natural enemies of several ...
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Genetic Data Suggest Multiple Introductions of the Lionfish (Pterois miles) into the Mediterranean Sea
Dimitriou, Andreas C.; Chartosia, Niki; Hall-Spencer, Jason M.; Kleitou, Periklis; Jimenez, Carlos; Antoniou, Charalampos; Hadjioannou, Louis; Kletou, Demetris; Sfenthourakis, Spyros (2019)Widespread reports over the last six years confirm the establishment of lionfish (Pterois miles) populations in the eastern Mediterranean. Accumulated knowledge on lionfish invasions in the western Atlantic Ocean has shown ...
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Genetic evidence against monophyly of Oniscidea implies a need to revise scenarios for the origin of terrestrial isopods
Dimitriou, Andreas C.; Taiti, Stefano; Sfenthourakis, Spyros (2019)Among the few crustacean taxa that managed to inhabit terrestrial environments, Oniscidea includes the most successful colonizers in terms of species richness and abundance. However, neither morphological traits nor molecular ...
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Habitat diversity, ecological requirements of species and the Small Island Effect
Sfenthourakis, Spyros; Triantis, Kostas A. (2009)Aim: To explore the causal factors leading to a significant Small Island Effect (SIE), that is, the absence of the commonly found species-area relationships below an island size, on the terrestrial isopod communities from ...
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Hotspots of endemic terrestrial invertebrates in southern Greece
Sfenthourakis, Spyros; Legakis, A. (2001)In the present paper we identify biodiversity hotspots of endemic terrestrial invertebrates in southern Greece, using four different criteria and five taxonomic groups. The hotspots identification procedure was facilitated ...
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An improved method for the identification of areas of endemism using species co-occurrences
Giokas, Sinos; Sfenthourakis, Spyros (2008)Aim: To develop a simple method that (1) combines the notions of biotic elements (groups of taxa with ranges significantly more similar to each other than to the ranges of other taxa) and of areas of endemism (AoE, areas ...
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Increased genetic diversity in Greek populations of the genus Ligidium (Crustacea: Isopoda: Oniscidea) revealed by RFLP analysis of mtDNA segments
Klossa-Kilia, E.; Kilias, G.; Sfenthourakis, Spyros (2006)We investigated mtDNA genetic differentiation and the phylogenetic relationships of 11 populations of the oniscidean genus Ligidium. We studied nine populations from Greece, assigned to three nominal species (L. euboicum, ...
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Increased molecular divergence of two endemic Trachelipus (Isopoda, Oniscidea) species from Greece reveals patterns not congruent with current taxonomy
Parmakelis, A.; Klossa-Kilia, E.; Kilias, G.; Triantis, Kostas A.; Sfenthourakis, Spyros (2008)In the present study, we employed three mitochondrial DNA genetic markers in a phylogenetic analysis aiming at the delineation of the relationships amongst nominal Trachelipus kytherensis populations, as well as between ...
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Insights into how predator diversity, population density and habitat type may affect defensive behaviour in a Mediterranean lizard
Savvides, Pantelis; Poliviou, Venetia; Stavrou, Maria; Sfenthourakis, Spyros; Pafilis, Panayiotis (2019)Various factors may alter anti-predatory responses among conspecifics. Here we assess some of these factors using three populations of a Mediterranean lizard (Acanthodactylus schreiberi) in Cyprus that differ in their ...
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Invasive lionfish in the Mediterranean: Low public awareness yet high stakeholder concerns
Kleitou, Periklis; Savva, Ioannis; Kletou, Demetris; Hall-Spencer, Jason M.; Antoniou, Charalampos; Christodoulides, Yiannis; Chartosia, Niki; Hadjioannou, Louis; Dimitriou, Andreas C.; Jimenez, Carlos; Petrou, Antonis; Sfenthourakis, Spyros; Rees, Sian (2019)A lionfish invasion in the Western Atlantic has been one of the most ecologically harmful fish invasions to date. Experience there has shown that its management is most effective when the public and stakeholders are involved. ...
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Island biogeography is not a single-variable discipline: The small island effect debate
Triantis, Kostas A.; Sfenthourakis, Spyros (2012)In some island systems, an 'anomalous' feature of species richness on smaller islands, in comparison with larger ones, has been observed. This has been described as the small island effect (SIE). The precise meaning of the ...
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The island rule is not valid in terrestrial isopods (Crustacea: Oniscidea)
Karagkouni, Maria; Sfenthourakis, Spyros; Meiri, S. (2017)The island rule posits that small animals grow larger on islands, whereas large-bodied ones are expected to dwarf, but remains largely unexplored in invertebrates. We tested the rule at an inter-specific level on terrestrial ...