Population Characteristics of the Limpet Patella caerulea (Linnaeus, 1758) in Eastern Mediterranean (Central Greece)

Barnacles are key space-occupiers in rocky shore communities on European coasts. Barnacles of the species Chthamalus stellatus (Poli, 1791) were collected between June 2014 and May 2015 from two sites, two stations per each site with varying degree of exposure to wave action and anthropogenic pressure (trampling), in the Eastern Mediterranean (Pagasitikos Gulf, Central Greece). This study addresses a knowledge gap in population characteristics of C. stellatus populations in the Eastern Mediterranean, assessing population structure and allometric relationships. Patterns of distribution and abundance (density and percentage cover) were studied both temporally (seasonally) and spatially (water level and site). Morphometric characteristics exhibited spatiotemporal variation. Population density was significantly higher at the site with higher wave exposure. The population cover exhibited high levels of similarity among shore levels, both spatially and temporally. Spatial distribution exhibited a clumped pattern of dispersion in autumn, winter, and spring, mainly in the sheltered site. Six dominant age groups were identified, with the dominant cohort in the third-year class. Significant negative allometric relationships were exhibited between all morphometric characteristics. Differences in growth patterns among populations were indicated, with a higher rate of growth at the site of lower wave exposure.

Download Full-text

Data Atlas of Byzantine and Ottoman Material Culture: Archiving Medieval and Post-Medieval Archaeological Fieldwork Data from the Eastern Mediterranean (600–2000 ad), Phase 1

Research Data Journal for the Humanities and Social Sciences ◽

10.1163/24523666-00401003 ◽

2019 ◽

Vol 4 (1) ◽

pp. 27-38

Author(s):

J.A.C. Vroom

Keyword(s):

Material Culture ◽

Eastern Mediterranean ◽

Phase 1 ◽

Rural Settlements ◽

Western Turkey ◽

Central Greece ◽

Eastern Turkey ◽

Urban Sites

This Data Atlas of Byzantine and Ottoman Material Culture involves the archiving, storing and making accessible of Medieval and Post-Medieval data from several archaeological missions in the eastern Mediterranean (period 600–2000 ad). The data mainly originate from pottery studies carried out during excavations in four major urban centres and during two surface surveys in their respective surroundings. The urban sites are Butrint in southern Albania, Athens in central Greece, Ephesus in western Turkey and Tarsus in eastern Turkey, the material culture of which is studied in relation to archaeological finds from rural settlements and towns in their hinterlands (e.g., Aetolia, Boeotia).

Download Full-text

MARBLE SCULPTURES FROM PHTHIOTIS IN THE LAMIA ARCHAEOLOGICAL MUSEUM

The Annual of the British School at Athens ◽

10.1017/s0068245413000099 ◽

2013 ◽

Vol 108 ◽

pp. 275-321

Author(s):

Iphigeneia Leventi

Keyword(s):

Formal Language ◽

Eastern Mediterranean ◽

Asia Minor ◽

Small Scale ◽

Hellenistic Period ◽

Central Greece ◽

Aegean Islands ◽

Marble Sculptures ◽

Eros And Psyche ◽

Greek East

Marble statuettes, now in the Lamia Archaeological Museum, that date to the Classical and above all the Hellenistic periods, and a Hellenistic votive relief depicting Herakles are presented here. This study investigates the relations between the local workshop in central Greece which produced them and the major Classical and Hellenistic sculptural centres of Athens and of the Aegean islands, Asia Minor and the kingdoms of the Greek East generally. A marble statuette of a goddess which may represent Artemis from Melitaia, and a marble statuette of a seated girl of unknown provenance are dated to the Classical period. The subjects portrayed in the Late Hellenistic material show a typical repertory, marble statuettes of Aphrodite or Aphrodite-like figures, and a statuary group of Eros and Psyche in marble, unusual for this period. The ways in which the local sculptors of the Late Hellenistic period in the area of modern Phthiotis adopted the typological and stylistic trends current in the great cosmopolitan centres are a major concern here. In the Hellenistic period, the production of marble statuettes for making offerings at public and domestic sanctuaries and for decorating opulent villas was in vogue, and a common formal language was created especially for small-scale sculpture in the eastern Mediterranean and the new art markets of Italy. The vehicles by which these artistic influences were transmitted to the sculptural production of central Greece will also be investigated.

Download Full-text

Assessment of the sardine (Sardina pilchardus Walbaum, 1792) fishery in the eastern Mediterranean basin (North Aegean Sea)

Mediterranean Marine Science ◽

10.12681/mms.36 ◽

2011 ◽

Vol 12 (2) ◽

pp. 333 ◽

Cited By ~ 14

Author(s):

K. ANTONAKAKIS ◽

M. GIANNOULAKI ◽

A. MACHIAS ◽

S. SOMARAKIS ◽

S. SANCHEZ ◽

...

Keyword(s):

Mediterranean Basin ◽

Eastern Mediterranean ◽

Population Analysis ◽

Aegean Sea ◽

Population Characteristics ◽

Current Status ◽

Sardina Pilchardus ◽

North Aegean ◽

North Aegean Sea ◽

The Impact

The aim of this study was to describe the biometric characteristics of the European sardine (Sardina pilchardus) catches and assess the current status of sardine stock in North Aegean Sea based on population characteristics and abundance trends. The stock was dominated by age groups 1 and 2, not exceeding age group 4. The sardine stock in this area was assessed through an Integrated Catch-at-Age model which implements a separable Virtual Population Analysis on catch at age data with weighted tuning indices. Sardine landings data derived from the commercial purse seine fishery over the period 2000-2008 were combined with the age structure of the stock as resulted from fisheries independent acoustic surveys. Sensitivity analysis of the impact of natural mortality values on stock assessment results was applied. Additionally forecast of the sardine population parameters and catches under different exploitation scenarios was implemented in a medium term basis. Results indicated that the North Aegean Sea sardine stock is considered fully exploited with the fishery operating close but over the empirical exploitation level for sustainability. Finally, the status of the sardine stock in N. Aegean Sea is discussed in relation to the sardine stocks from the western and the central Mediterranean basin.

Download Full-text

MORPHOMETRIC AND GROWTH PATTERNS OF THE BLOOD CLAM (Anadara granosa) FROM THE BAGAN SIAPI-API COASTAL AREA ROKAN HILIR

Berkala Perikanan Terubuk ◽

10.31258/terubuk.46.3.37-45 ◽

2019 ◽

Vol 46 (3) ◽

pp. 37

Author(s):

Silfia Eka Dewi ◽

Eddiwan Eddiwan ◽

Efawani Efawani

Keyword(s):

Shell Length ◽

Growth Pattern ◽

Coastal Area ◽

Intertidal Zone ◽

Growth Patterns ◽

Morphometric Characteristics ◽

Male And Female ◽

B Values ◽

Blood Clam ◽

Anadara Granosa

This study was conducted in the intertidal zone in the waters of Bagan Siapi-api Rokan Hilir Regency in May-June 2018. This study aims to examine morphometrics and growth patterns in blood clams (Anadara granosa) in Bagan Siapi-api waters. A total of 100 samples (23.89-50.52 mm shell length and 3.85-18.16 grams total weight) were analyzed. From the results of observations it was found that the number of male and female ribs was 8-20, and there were 3 differences in morphometric characteristics between male and female, namely male blood clams longer than females, while female blood shells were wider and thicker than males. Furthermore, the growth pattern of A. granosa was negative allometric, with male b values 1.46 and females 0.74.

Download Full-text

Banggai cardinalfish (Pterapogon kauderni) populations (stocks) around Banggai Island, a geometric and classical morphometric approach

10.7287/peerj.preprints.182 ◽

2013 ◽

Author(s):

Samliok Ndobe ◽

Abigail Moore

Keyword(s):

Marine Protected Area ◽

Function Analysis ◽

Growth Patterns ◽

Canonical Variate ◽

Morphometric Characteristics ◽

Management Units ◽

Geometric Morphometric ◽

Morphometric Variation ◽

Study Results ◽

Endemic Distribution

Background. The identification and characterisation of appropriate management units (stocks) is important as a basis for responsible fisheries management as well as conservation of within species biodiversity. The Banggai cardinalfish Pterapogon kauderni (F.P. Koumans,1933), a mouthbrooding apogonid with Endangered status (IUCN Red List) has been shown to have a high level of genetic population structure across the endemic distribution in the Banggai Archipelago. With a life-cycle making recovery frrm extirpation extremely unlikely, this indicates a need to conserve each reproductively isolated population (stock), in particular to support zonation of Banggai Island in the context of the proposed district marine protected area. Genetic and morphological variations are often but not always related, and ideally both should be used in stock identification. However there were no data on classical or geometric morphometric characteristics of P. kauderni populations. Methods. Adult P. kauderni for classical and geometric morphometric analyses were collected randomly at six sites on Banggai Island (31-34 adult fish/site, total 193). Eleven morphometric parameters were measured and 10 dimensionless ratios were compared using the ANOVA function in Microsoft Excel 2007. A landmark set for P. kauderni was developed. Each specimen was photographed, digitised (tps.dig and tps.util). Characteristics of the six populations were analysed using Canonical Variate Analysis (CVA) and Discriminant Function Analysis (DFA) in MorphoJ geometric morphometric software to identify significant between-site variation. The results were compared with genetic, geophysical, bio-ecological and socio-economic data to determine meaningful stocks or management units. Results. Except for one site pair (Monsongan and Tinakin Laut) we found significant or highly significant differences between sites (sub-populations) in morphometric characteristics, as well as from the CVA and DFA results. The greatest morphometric difference was between sub-populations at the north (Popisi) and southeast (Matanga) extremities of the Banggai Island P. kauderni distribution. The Popisi population was characterised by short/high head shape, Matanga by a more hydrodynamic shape (elongated with a more pointed head). The findings were consonant with genetic study results. We propose a population model with four closed populations and one metapopulation resulting in five P. kauderni stocks around Banggai Island. Discussion. Observed patterns of morphometric variation could be related to geographical spread (radiation or North-South gradient), habitat-driven selection or growth patterns, stochastic events, or a combination. Such fine-scale characterisation calls for intra-species conservation, with implications for the management of this restricted range ornamental fish around Banggai Island and throughout the P. kauderni endemic distribution.

Download Full-text

Exploring Spatial Associations between On-Sale Alcohol Availability, Neighborhood Population Characteristics, and Violent Crime in a Geographically Isolated City

Journal of Addiction ◽

10.1155/2013/356152 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 6

Author(s):

Daikwon Han ◽

Dennis M. Gorman

Keyword(s):

Violent Crime ◽

Spatial Relationship ◽

Population Characteristics ◽

Policy Implications ◽

Neighborhood Characteristics ◽

Alcohol Outlets ◽

Spatial Associations ◽

Alcohol Availability ◽

Global Regression ◽

Geographically Isolated

Objectives. Despite the increasing evidence of the associations between alcohol availability and violence, there are still inconsistent findings on the effects of on- and off-sale alcohol outlets on violent crime. The aim of this study was to examine spatial associations between on-sale alcohol availability, neighborhood characteristics, and violent crime in a geographically isolated city in Texas.Methods. Geographically weighted regression (GWR) and global regression models were employed to analyze the nature of the spatial relationship between violent crime, neighborhood sociocultural characteristics, and on-sale alcohol environment.Results. We found strong effects of neighborhood characteristics combined with on-sale alcohol availability on violence outcomes. Several neighborhood variables combined with alcohol availability explained about 63% of the variability in violence. An additional 7% was explained by the GWR model, while spatially nonstationary associations between violence and some predictor variables were observed.Conclusions. This study provided more credible evidence of the influence of on-sale alcohol outlets on violence in a unique setting. These findings have important policy implications in addressing the question of public health consequences of alcohol-related violence in local contexts.

Download Full-text

Population Characteristics of Co-Managed White Bass and Hybrid Striped Bass in Lake McConaughy, Nebraska

10.32873/unl.dc.tnas.39.1 ◽

2019 ◽

Keyword(s):

Population Dynamics ◽

Striped Bass ◽

Growth Patterns ◽

Population Characteristics ◽

Hybrid Striped Bass ◽

White Bass ◽

Morone Chrysops ◽

Class Strength ◽

Variability Index ◽

Variable Recruitment

White Bass (Morone chrysops) and Hybrid Striped Bass (M. saxatillis × M. chrysops) populations often coexist in the same waterbody and are known to achieve different lengths, have differing reproductive success, and provide different opportunities for anglers. However, comparative population dynamics from systems where Moronids are managed with the same regulation is often lacking. This study aimed to assess the recruitment, mortality, and growth of these species from seasonal samples collected at Lake McConaughy in 2015 and fall 2016. White Bass demonstrated highly variable recruitment in Lake McConaughy despite stocking efforts (mean recruitment variability index = 0.157). Hybrid Striped Bass year class strength was also variable, but RVI was not calculated as the number of missing year classes exceed the number of present year classes. Total annual mortality estimates for Hybrid Striped Bass (39.7%) and White Bass (41.4%) were consistent with values reported in other populations, but both species were observed to achieve uncommon longevity. Both species exhibited sexual size dimorphism, and growth was moderate and consistent with average values presented for North American populations. This study provides insight into the population dynamics of two species with trophy potential managed by the same regulation in Lake McConaughy. Differences in growth patterns indicate the current regulation affects each species differently, and managers may be able to utilize this to inform decisions about management of coexisting Moronid populations.

Download Full-text

Banggai cardinalfish (Pterapogon kauderni) populations (stocks) around Banggai Island, a geometric and classical morphometric approach

10.7287/peerj.preprints.182v1 ◽

2013 ◽

Author(s):

Samliok Ndobe ◽

Abigail Moore

Keyword(s):

Marine Protected Area ◽

Function Analysis ◽

Growth Patterns ◽

Canonical Variate ◽

Morphometric Characteristics ◽

Management Units ◽

Geometric Morphometric ◽

Morphometric Variation ◽

Study Results ◽

Endemic Distribution

Background. The identification and characterisation of appropriate management units (stocks) is important as a basis for responsible fisheries management as well as conservation of within species biodiversity. The Banggai cardinalfish Pterapogon kauderni (F.P. Koumans,1933), a mouthbrooding apogonid with Endangered status (IUCN Red List) has been shown to have a high level of genetic population structure across the endemic distribution in the Banggai Archipelago. With a life-cycle making recovery frrm extirpation extremely unlikely, this indicates a need to conserve each reproductively isolated population (stock), in particular to support zonation of Banggai Island in the context of the proposed district marine protected area. Genetic and morphological variations are often but not always related, and ideally both should be used in stock identification. However there were no data on classical or geometric morphometric characteristics of P. kauderni populations. Methods. Adult P. kauderni for classical and geometric morphometric analyses were collected randomly at six sites on Banggai Island (31-34 adult fish/site, total 193). Eleven morphometric parameters were measured and 10 dimensionless ratios were compared using the ANOVA function in Microsoft Excel 2007. A landmark set for P. kauderni was developed. Each specimen was photographed, digitised (tps.dig and tps.util). Characteristics of the six populations were analysed using Canonical Variate Analysis (CVA) and Discriminant Function Analysis (DFA) in MorphoJ geometric morphometric software to identify significant between-site variation. The results were compared with genetic, geophysical, bio-ecological and socio-economic data to determine meaningful stocks or management units. Results. Except for one site pair (Monsongan and Tinakin Laut) we found significant or highly significant differences between sites (sub-populations) in morphometric characteristics, as well as from the CVA and DFA results. The greatest morphometric difference was between sub-populations at the north (Popisi) and southeast (Matanga) extremities of the Banggai Island P. kauderni distribution. The Popisi population was characterised by short/high head shape, Matanga by a more hydrodynamic shape (elongated with a more pointed head). The findings were consonant with genetic study results. We propose a population model with four closed populations and one metapopulation resulting in five P. kauderni stocks around Banggai Island. Discussion. Observed patterns of morphometric variation could be related to geographical spread (radiation or North-South gradient), habitat-driven selection or growth patterns, stochastic events, or a combination. Such fine-scale characterisation calls for intra-species conservation, with implications for the management of this restricted range ornamental fish around Banggai Island and throughout the P. kauderni endemic distribution.

Download Full-text

Geodetic determination of the kinematics of central Greece with respect to Europe: Implications for eastern Mediterranean tectonics

Journal of Geophysical Research Atmospheres ◽

10.1029/95jb00317 ◽

1995 ◽

Vol 100 (B7) ◽

pp. 12675-12690 ◽

Cited By ~ 360

Author(s):

Xavier Le Pichon ◽

Nicolas Chamot-Rooke ◽

Siegfried Lallemant ◽

Ron Noomen ◽

George Veis

Keyword(s):

Eastern Mediterranean ◽

Central Greece

Download Full-text