What to save, the host or the pest? The spatial distribution of xylophage insects within the Mediterranean oak woodlands of Southwestern Spain

2017 ◽  
Vol 392 ◽  
pp. 90-104 ◽  
Author(s):  
J. Duque-Lazo ◽  
R.M. Navarro-Cerrillo
Keyword(s):  
Spatial Distribution ◽  
Oak Woodlands ◽  
The Mediterranean ◽  
Mediterranean Oak Woodlands

scholarly journals The spatio-temporal distribution of lightning over Israel and the neighboring area and its relation to regional synoptic systems

2011 ◽  
Vol 11 (8) ◽  
pp. 2125-2135 ◽  
Author(s):  
S. Shalev ◽  
H. Saaroni ◽  
T. Izsak ◽  
Y. Yair ◽  
B. Ziv
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Temporal Distribution ◽  
Lightning Activity ◽  
Eastern Coast ◽  
Synoptic Situation ◽  
Lightning Flash ◽  
The Mediterranean ◽  
Spatio Temporal ◽  
Neighboring Area

Abstract. The spatio-temporal distribution of lightning flashes over Israel and the neighboring area and its relation to the regional synoptic systems has been studied, based on data obtained from the Israel Lightning Location System (ILLS) operated by the Israel Electric Corporation (IEC). The system detects cloud-to-ground lightning discharges in a range of ~500 km around central Israel (32.5° N, 35° E). The study period was defined for annual activity from August through July, for 5 seasons in the period 2004–2010. The spatial distribution of lightning flash density indicates the highest concentration over the Mediterranean Sea, attributed to the contribution of moisture as well as sensible and latent heat fluxes from the sea surface. Other centers of high density appear along the coastal plain, orographic barriers, especially in northern Israel, and downwind from the metropolitan area of Tel Aviv, Israel. The intra-annual distribution shows an absence of lightning during the summer months (JJA) due to the persistent subsidence over the region. The vast majority of lightning activity occurs during 7 months, October to April. Although over 65 % of the rainfall in Israel is obtained during the winter months (DJF), only 35 % of lightning flashes occur in these months. October is the richest month, with 40 % of total annual flashes. This is attributed both to tropical intrusions, i.e., Red Sea Troughs (RST), which are characterized by intense static instability and convection, and to Cyprus Lows (CLs) arriving from the west. Based on daily study of the spatial distribution of lightning, three patterns have been defined; "land", "maritime" and "hybrid". CLs cause high flash density over the Mediterranean Sea, whereas some of the RST days are typified by flashes over land. The pattern defined "hybrid" is a combination of the other 2 patterns. On CL days, only the maritime pattern was noted, whereas in RST days all 3 patterns were found, including the maritime pattern. It is suggested that atmospheric processes associated with RST produce the land pattern. Hence, the occurrence of a maritime pattern in days identified as RST reflects an "apparent RST". The hybrid pattern was associated with an RST located east of Israel. This synoptic type produced the typical flash maximum over the land, but the upper-level trough together with the onshore winds it induced over the eastern coast of the Mediterranean resulted in lightning activity over the sea as well, similar to that of CLs. It is suggested that the spatial distribution patterns of lightning may better identify the synoptic system responsible, a CL, an "active RST" or an "apparent RST". The electrical activity thus serves as a "fingerprint" for the synoptic situation responsible for its generation.

scholarly journals Variability of ant community composition in cork oak woodlands across the Mediterranean region: implications for forest management

2017 ◽  
Vol 10 (4) ◽  
pp. 707-714 ◽  
Author(s):  
M Verdinelli ◽  
SEB Yakhlef ◽  
CS Cossu ◽  
O Pilia ◽  
R Mannu
Keyword(s):  
Forest Management ◽  
Community Composition ◽  
Mediterranean Region ◽  
Cork Oak ◽  
Oak Woodlands ◽  
Ant Community ◽  
The Mediterranean

Soil organic-C accumulation and N availability under improved pastures established in Mediterranean oak woodlands

2012 ◽  
Vol 28 (4) ◽  
pp. 497-507 ◽  
Author(s):  
M. X. Gómez-Rey ◽  
A. Garcês ◽  
M. Madeira
Keyword(s):  
N Availability ◽  
Soil Organic C ◽  
Organic C ◽  
Oak Woodlands ◽  
Mediterranean Oak Woodlands

Nestling food of three hole-nesting passerine species and experimental increase in their densities in Mediterranean oak woodlands

2016 ◽  
Vol 135 (5) ◽  
pp. 839-847 ◽  
Author(s):  
Ricardo S. Ceia ◽  
Rui A. Machado ◽  
Jaime A. Ramos
Keyword(s):  
Oak Woodlands ◽  
Passerine Species ◽  
Mediterranean Oak Woodlands

Community structure of digenean parasites of sparid and labrid fishes of the Mediterranean sea: a new approach

Parasitology ◽  
1999 ◽  
Vol 119 (6) ◽  
pp. 635-648 ◽  
Author(s):  
P. SASAL ◽  
N. NIQUIL ◽  
P. BARTOLI
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Digestive Tract ◽  
Parasite Species ◽  
Parasite Community ◽  
Community Studies ◽  
Biological Factors ◽  
Parasite Communities ◽  
The Mediterranean ◽  
First Time

The aim of this work was to study the structure of the parasite communities of Digeneans of 2 families of Teleost fishes (Sparidae and Labridae) of the Mediterranean sea. We tried to quantify the importance of both the microhabitat requirements of the parasite species and the effect of host biological factors on the parasite communities. We applied, for the first time in parasite community studies, the Canonical Correspondence Analysis (CCA) to analyse (i) the spatial distribution of parasite species within the digestive tract of the hosts; (ii) the host's biological factors (such as diet, host length, gregariousness and abundance) that may influence this spatial distribution of parasite species. Our results showed that potential microhabitats were vacant in the 2 host families studied revealing a lack of niche saturation because either there was little inter- and/or intraspecific competition or there were enough available space and resources within the host. Our results also indicated that the position of the parasite in the digestive tract is much more important than host biological factors for the structure of parasite community. Finally, we highlight the potential use of the CCA method for controlling for phylogenetic constraints in multi-species analyses.

scholarly journals Assessing foraging strategies of herbivores in Mediterranean oak woodlands: a review of key issues and selected methodologies

2013 ◽  
Vol 87 (6) ◽  
pp. 1421-1437 ◽  
Author(s):  
Maria Isabel Ferraz de Oliveira ◽  
Elsa Lamy ◽  
Miguel N. Bugalho ◽  
Margarida Vaz ◽  
Cristina Pinheiro ◽  
...  
Keyword(s):  
Foraging Strategies ◽  
Oak Woodlands ◽  
Key Issues ◽  
Mediterranean Oak Woodlands

scholarly journals Interannual variability of the Mediterranean trophic regimes from ocean color satellites

2015 ◽  
Vol 12 (17) ◽  
pp. 14941-14980 ◽  
Author(s):  
N. Mayot ◽  
F. D'Ortenzio ◽  
M. Ribera d'Alcalà ◽  
H. Lavigne ◽  
H. Claustre
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Interannual Variability ◽  
Deep Convection ◽  
Regional Scale ◽  
Ocean Color ◽  
Run Off ◽  
The Mediterranean ◽  
The One ◽  
The Impact

Abstract. D'Ortenzio and Ribera d'Alcalà (2009, DR09 hereafter) divided the Mediterranean Sea into "bioregions" based on the climatological seasonality (phenology) of phytoplankton. Here we investigate the interannual variability of this bioregionalization. Using 16 years of available ocean color observations (i.e. SeaWiFS and MODIS), we analyzed the spatial distribution of the DR09 trophic regimes on an annual basis. Additionally, we identified new trophic regimes, with seasonal cycles of phytoplankton biomass different from the DR09 climatological description and named "Anomalous". Overall, the classification of the Mediterranean phytoplankton phenology proposed by DR09 (i.e. "No Bloom", "Intermittently", "Bloom" and "Coastal"), is confirmed to be representative of most of the Mediterranean phytoplankton phenologies. The mean spatial distribution of these trophic regimes (i.e. bioregions) over the 16 years studied is also similar to the one proposed by DR09. But at regional scale some annual differences, in their spatial distribution and in the emergence of "Anomalous" trophic regimes, were observed compared to the DR09 description. These dissimilarities with the DR09 study were related to interannual variability in the sub-basin forcing: winter deep convection events, frontal instabilities, inflow of Atlantic or Black Sea Waters and river run-off. The large assortment of phytoplankton phenologies identified in the Mediterranean Sea is thus verified at interannual level, confirming the "sentinel" role of this basin to detect the impact of climate changes on the pelagic environment.

scholarly journals Time-clustering of wave storms in the Mediterranean Sea

2016 ◽  
Author(s):  
Giovanni Besio ◽  
Riccardo Briganti ◽  
Alessandro Romano ◽  
Lorenzo Mentaschi ◽  
Paolo De Girolamo
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Time Scales ◽  
Horizontal Resolution ◽  
North West ◽  
Temporal Sampling ◽  
The North ◽  
Allan Factor ◽  
Long Time ◽  
The Mediterranean

Abstract. In this contribution we identify storm time-clustering in the Mediterranean Sea through the analysis of the spatial distribution of the Allan Factor. This parameter is evaluated from long time series of wave height provided by means of oceanographic buoy measurements and hindcast re-analysis spanning in the period 1979–2014 and characterized by a horizontal resolution of about 0.1 degree in longitude and latitude and a temporal sampling of one hour (Mentaschi et a., 2015). Results reveal clustering mainly for two distinct ranges of time scales. The first range of time scales (12 hrs to 50 days) is associated to sequences of storms generated by the persistence of the same meteorological system. The second range, associated to timescales beteween 50 and 100 days, reveals seasonal fluctuations. Transitional regimes are present at some locations in the basin. The spatial distribution of the Allan Factor reveals that the clustering at smaller time scales is present in the North-West of the Mediterranean, while clustering at larger scales is observed in the whole basin. This analysis is believed to be important to assess the local increased flood and coastal erosion risks due to storm clustering.

Diversity and spatial distribution of Opuntia spp. in the Mediterranean Basin

2009 ◽  
Vol 73 (12) ◽  
pp. 1058-1066 ◽  
Author(s):  
P. Erre ◽  
I. Chessa ◽  
G. Nieddu ◽  
P.G. Jones
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Basin ◽  
The Mediterranean ◽  
Opuntia Spp ◽  
The Mediterranean Basin
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