Structural and cytochemical investigation of the leaf of silverleaf nightshade (Solanum elaeagnifolium), a drought-resistant alien weed of the Greek flora

2009 ◽  
Vol 57 (5) ◽  
pp. 432 ◽  
Author(s):  
Nikolaos S. Christodoulakis ◽  
Paraskevi-Niki Lampri ◽  
Costas Fasseas
Keyword(s):  
Mediterranean Region ◽  
Structural Characteristics ◽  
Secretory Activity ◽  
Climatic Conditions ◽  
Cytochemical Investigation ◽  
Silverleaf Nightshade ◽  
Drought Resistant ◽  
The Mediterranean ◽  
Solanum Elaeagnifolium ◽  
Alien Weed

Light and scanning electron microscopy as well as histochemical reactions were employed to investigate the leaf structure and secretory activity of an adventive perennial pest that is rapidly dispersing in the Mediterranean region. Interesting structural characteristics, not common among the well-adapted native Mediterranean phanerophytes, were observed. Although ‘unconventional’, these structural characteristics produce an ecologically equivalent, xeromorphic leaf on a plant that proves to be competitive and very efficient under the Mediterranean climatic conditions.

scholarly journals The 4.2 ka BP Event in the Mediterranean Region: an overview

2018 ◽  
Author(s):  
Monica Bini ◽  
Giovanni Zanchetta ◽  
Aurel Persoiu ◽  
Rosine Cartier ◽  
Albert Català ◽  
...  
Keyword(s):  
North Atlantic ◽  
Mediterranean Region ◽  
Regional Climate ◽  
Climatic Conditions ◽  
Dry Period ◽  
Precipitation Regime ◽  
Regional Heterogeneity ◽  
Climate Patterns ◽  
Lacustrine Carbonate ◽  
The Mediterranean

Abstract. The Mediterranean region and the Levant have returned some of the clearest evidence of a climatically dry period occurring around 4200 years ago. However, some regional evidence are controversial and contradictory, and issues remain regarding timing, progression and regional articulation of this event. In this paper we review the evidence from selected proxies (sea-surface temperature, precipitation and temperature reconstructed from pollen, δ18O on speleothems, and δ18O on lacustrine carbonate) over the Mediterranean basin to infer possible regional climate patterns during the interval between 4.3 and 3.8 cal ka BP. The values and limitations of these proxies are discussed, and their potential for furnishing information on seasonality is also explored. Despite the chronological uncertainties, which are the main limitations for disentangling details of the climatic conditions, the data suggests that winter over the Mediterranean was drier condition, in addition to already dry summers. However, some exceptions to this prevail, – where wetter condition seems to have persisted – suggesting regional heterogeneity in climate patterns. Temperature data, even if sparse, also suggest a cooling anomaly, even if this is not uniform. The most common paradigm to interpret the precipitation regime in the Mediterranean – a North Atlantic Oscillation-like pattern – is not completely satisfactory to interpret the selected data.

scholarly journals The 4.2 ka BP Event in the Mediterranean region: an overview

2019 ◽  
Vol 15 (2) ◽  
pp. 555-577 ◽  
Author(s):  
Monica Bini ◽  
Giovanni Zanchetta ◽  
Aurel Perşoiu ◽  
Rosine Cartier ◽  
Albert Català ◽  
...  
Keyword(s):  
North Atlantic ◽  
Mediterranean Region ◽  
Regional Climate ◽  
Climatic Conditions ◽  
Dry Period ◽  
Precipitation Regime ◽  
Regional Heterogeneity ◽  
Climate Patterns ◽  
Lacustrine Carbonate ◽  
The Mediterranean

Abstract. The Mediterranean region and the Levant have returned some of the clearest evidence of a climatically dry period occurring around 4200 years ago. However, some regional evidence is controversial and contradictory, and issues remain regarding timing, progression, and regional articulation of this event. In this paper, we review the evidence from selected proxies (sea-surface temperature, precipitation, and temperature reconstructed from pollen, δ18O on speleothems, and δ18O on lacustrine carbonate) over the Mediterranean Basin to infer possible regional climate patterns during the interval between 4.3 and 3.8 ka. The values and limitations of these proxies are discussed, and their potential for furnishing information on seasonality is also explored. Despite the chronological uncertainties, which are the main limitations for disentangling details of the climatic conditions, the data suggest that winter over the Mediterranean involved drier conditions, in addition to already dry summers. However, some exceptions to this prevail – where wetter conditions seem to have persisted – suggesting regional heterogeneity in climate patterns. Temperature data, even if sparse, also suggest a cooling anomaly, even if this is not uniform. The most common paradigm to interpret the precipitation regime in the Mediterranean – a North Atlantic Oscillation-like pattern – is not completely satisfactory to interpret the selected data.

scholarly journals Cladonia subturgida (Cladoniaceae, Lecanoromycetes), an overlooked, but common species in the Mediterranean region

Symbiosis ◽  
2020 ◽  
Vol 82 (1-2) ◽  
pp. 9-18
Author(s):  
Raquel Pino-Bodas ◽  
Elena Araujo ◽  
Blanca Gutiérrez-Larruga ◽  
Ana Rosa Burgaz
Keyword(s):  
Mediterranean Region ◽  
Potential Distribution ◽  
Common Species ◽  
Climatic Conditions ◽  
Distribution Area ◽  
Mediterranean Species ◽  
Distribution Models ◽  
Italian Peninsula ◽  
The North ◽  
The Mediterranean

AbstractCladonia subturgida is a Mediterranean species that has been overlooked. Apparently it was restricted to the Iberian Peninsula and Canary Islands. However, during the study of the genus Cladonia in the Mediterranean region, new populations from 44 localities were found in: south France, Sardinia, south Italian peninsula, Crete and continental Greece. Distribution models based on MaxEnt, GLM, GAM and MARS algorithms were used to estimate the potential distribution of C. subturgida. Sicily, Corsica and the north of Africa were regions with suitable climatic conditions for C. subturgida where it has not been reported yet. The climatic variables with greatest relative influence in the C. subturgida distribution were the Precipitation of Warmest Quarter and the Annual Precipitation. Additionally, the ITS rDNA region was used to study the genetic variation of this species across its distribution area. Eleven haplotypes were found, one of them widely distributed through its geographical range. AMOVA analyses indicated lack of geographical structure.

How much did climate force the Messinian salinity crisis? Quantified climatic conditions from pollen records in the Mediterranean region

2006 ◽  
Vol 238 (1-4) ◽  
pp. 281-301 ◽  
Author(s):  
Séverine Fauquette ◽  
Jean-Pierre Suc ◽  
Adele Bertini ◽  
Speranta-Maria Popescu ◽  
Sophie Warny ◽  
...  
Keyword(s):  
Mediterranean Region ◽  
Climatic Conditions ◽  
Messinian Salinity Crisis ◽  
The Mediterranean ◽  
Pollen Records

Existing areas and past changes of wetland extent in the Mediterranean region: an overview

2012 ◽  
Vol 38 (2) ◽  
pp. 53-66 ◽  
Author(s):  
Christian Perennou ◽  
Coralie Beltrame ◽  
Anis Guelmami ◽  
Pere Tomàs Vives ◽  
Pierre Caessteker
Keyword(s):  
Mediterranean Region ◽  
Wetland Extent ◽  
The Mediterranean
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