scholarly journals Using stable isotopes of nitrogen and carbon to study seabird ecology: applications in the Mediterranean seabird community

2003 ◽  
Vol 67 (S2) ◽  
pp. 23-32 ◽  
Author(s):  
Manuela G. Forero ◽  
Keith A. Hobson
Keyword(s):  
Stable Isotopes ◽  
The Mediterranean ◽  
Seabird Ecology

Mediterranean Temporary Ponds: using isotope hydrology tools to describe and understand their behaviour

2021 ◽  
Author(s):  
Alexandra Mattei ◽  
Laurent Sorba ◽  
Emilie Garel ◽  
Sebastien Santoni ◽  
Sophie Orsini ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Hydrological Cycle ◽  
Anthropogenic Impacts ◽  
Conservation Status ◽  
Temporary Ponds ◽  
Temporary Pond ◽  
Isotope Hydrology ◽  
Mediterranean Temporary Ponds ◽  
The Mediterranean ◽  
Hydrological Functioning

<p>Mediterranean temporary ponds are very shallow ponds, isolated from permanent water bodies, which undergo a periodic cycle of flooding and drought, and have a characteristic flora and fauna adapted to this alternation. This habitat is mainly distributed in dry and sub-arid areas. Mediterranean temporary ponds are identified as one of the worldwide biodiversity hotspots and constitutes therefore a priority habitats according to the Natura 2000 network of the European Union (3170*, Council Directive 92/43/CEE). The development of flora and fauna in this type of ecosystem is defined by the natural length of the hydro-period. However, little is known about the hydrological functioning of these very specific hydrosystems. DespiteHS10 this protective conservation status, this habitat has suffered continuous degradation and loss disappearing at a fast rate due anthropogenic impacts and climate pressures. In most cases, temporary wetland disappearance is unintentional and related to a lack of understanding of its hydrological functioning within the watershed.</p><p>The aim of this work is, hence, to use the tools of the isotope hydrology to increase our basic understanding of the hydrological functioning of the Mediterranean temporary ponds. Our study focuses on the Musella temporary pond located in Southern Corsica (France) which undergoes important man-induced and climatic pressures. During one full hydrological cycle, surface and groundwater levels, major ions, stable isotopes of the water molecules as well as field parameters (temperature, pH, electrical conductivity, dissolved oxygen) have been measured every month.</p><p>Results bring information on the water quality, chemical stability and temporal evolution in terms of surface water level as well as potential connection with the underlying carbonated aquifer. The stable isotopes inform about the origin of water, its mixing processes with groundwater, and its evaporative status through time.</p><p>Flooding and drying processes of the Musella temporary pond are now better constrained and documented projections can now be set up towards the resilience of the hydrosystem considering the future consequences of climate change in the Mediterranean region.</p>

Zooming into the Mediterranean outflow fossil moat during the 1.2–1.8millionyears period (Early-Pleistocene) — An approach by radiogenic and stable isotopes

2015 ◽  
Vol 135 ◽  
pp. 104-118 ◽  
Author(s):  
Susana M. Lebreiro ◽  
Laura Antón ◽  
M. Isabel Reguera ◽  
Marta Fernández ◽  
Estefanía Conde ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Early Pleistocene ◽  
Mediterranean Outflow ◽  
The Mediterranean

Middle Miocene stepwise climate evolution in the Mediterranean region through high-resolution stable isotopes and calcareous plankton records

2021 ◽  
pp. 102030
Author(s):  
Niccolò Baldassini ◽  
Luca Maria Foresi ◽  
Fabrizio Lirer ◽  
Mario Sprovieri ◽  
Elena Turco ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
High Resolution ◽  
Mediterranean Region ◽  
Middle Miocene ◽  
Climate Evolution ◽  
Calcareous Plankton ◽  
The Mediterranean

scholarly journals Hydrological dynamics of water sources in a Mediterranean lagoon

2014 ◽  
Vol 11 (7) ◽  
pp. 7229-7253
Author(s):  
C. Stumpp ◽  
A. Ekdal ◽  
I. E. Gönenc ◽  
P. Maloszewski
Keyword(s):  
Stable Isotopes ◽  
Mediterranean Sea ◽  
Temporal Dynamics ◽  
Salt Water ◽  
Water Sources ◽  
Dry Season ◽  
Marine Water ◽  
Wet Season ◽  
The Mediterranean ◽  
Over Time

Abstract. Lagoons are important ecosystems occupying large coastal areas worldwide. Lagoons contain various mixtures of marine and freshwater sources which are highly dynamic in time. However, it often remains a challenge to identify and quantify dynamic changes of water sources, particularly in heterogeneous lagoon systems like the Köycegiz-Dalyan Lagoon (KDL), which is located at the southwest of Turkey on the Mediterranean Sea coast. The objective of this study was to quantify different contributions of potential water sources i.e. surface water, groundwater and seawater in the lagoon and how these water sources changed over time and space. In the wet and dry season stable isotopes of water, chloride concentration (Cl-) and salinity were measured in two depths in the lagoon and surrounding water bodies (sea, lake, groundwater). Different components of water sources were quantified with a three component endmember mixing analysis. Differences in Cl- and stable isotopes over time indicated the dynamic behaviour of the system. Generally, none of the groundwater samples was impacted by water of the Mediterranean Sea. During the wet season, most of the lagoon water (>95%) was influenced by freshwater and vertically well mixed. During the dry season, high Cl- in the deeper sampling locations indicated a high contribution of marine water throughout the entire lagoon system due to salt water intrusion. However, a distinct layering in the lagoon was obvious from low Cl- and depleted isotope contents close to the surface supporting freshwater inflow into the system even during the dry season. Besides temporal dynamics also spatial heterogeneities were identified. Changes in water sources were most evident in the main lagoon channel compared to more isolate lagoon lakes, which were influenced by marine water even in the wet season, and compared to side branches indicating slower turnover times. We found that environmental tracers helped to quantify contributions of different water sources in the Köycegiz-Dalyan Lagoon which is a highly dynamic and heterogeneous groundwater dependent ecosystem.

scholarly journals Hydrological dynamics of water sources in a Mediterranean lagoon

2014 ◽  
Vol 18 (12) ◽  
pp. 4825-4837 ◽  
Author(s):  
C. Stumpp ◽  
A. Ekdal ◽  
I. E. Gönenc ◽  
P. Maloszewski
Keyword(s):  
Stable Isotopes ◽  
Mediterranean Sea ◽  
Temporal Dynamics ◽  
Chloride Concentration ◽  
Water Sources ◽  
Dry Season ◽  
Marine Water ◽  
Wet Season ◽  
The Mediterranean ◽  
Over Time

Abstract. Lagoons are important ecosystems occupying large coastal areas worldwide. Lagoons contain various mixtures of marine and freshwater sources which are highly dynamic in time. However, it often remains a challenge to identify and quantify dynamic changes of water sources, particularly in heterogeneous lagoon systems like the Köycegiz–Dalyan lagoon (KDL), which is located at the south-west of Turkey on the Mediterranean Sea coast. The objective of this study was to quantify different contributions of potential water sources i.e. surface water, groundwater and seawater in the lagoon and how these water sources changed over time and space. In the wet- and dry-season stable isotopes of water, chloride concentration (Cl-) and salinity were measured in two depths in the lagoon and surrounding water bodies (sea, lake, groundwater). Different components of water sources were quantified with a three component endmember mixing analysis. Differences in Cl- and stable isotopes over time indicated the dynamic behaviour of the system. Generally, none of the groundwater samples was impacted by water of the Mediterranean Sea. During the wet season, most of the lagoon water (> 95%) was influenced by freshwater and vertically well mixed. During the dry season, high Cl- in the deeper sampling locations indicated a high contribution of marine water throughout the entire lagoon system due to saltwater intrusion. However, a distinct layering in the lagoon was obvious from low Cl- and depleted isotope contents close to the surface supporting freshwater inflow into the system even during the dry season. Besides temporal dynamics also spatial heterogeneities were identified. Changes in water sources were most evident in the main lagoon channel compared to more isolate lagoon lakes, which were influenced by marine water even in the wet season, and compared to side branches indicating slower turnover times. We found that environmental tracers helped to quantify highly dynamic and heterogeneous contributions of different water sources in the Köycegiz–Dalyan lagoon.

scholarly journals Sources of mercury in deep-sea sediments of the Mediterranean Sea as revealed by mercury stable isotopes

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Nives Ogrinc ◽  
Holger Hintelmann ◽  
Jože Kotnik ◽  
Milena Horvat ◽  
Nicola Pirrone
Keyword(s):  
Stable Isotopes ◽  
Mediterranean Sea ◽  
Deep Sea ◽  
Deep Sea Sediments ◽  
The Mediterranean ◽  
Mercury Stable Isotopes

115 Heart failure mortality due to ischemic etiology: is it the same in the Mediterranean lifestyle?

2006 ◽  
Vol 5 (1) ◽  
pp. 28-29
Author(s):  
M JIMENEZNAVARRO ◽  
J GOMEZDOBLAS ◽  
G GOMEZHERNANDEZ ◽  
A DOMINGUEZFRANCO ◽  
J GARCIAPINILLA ◽  
...  
Keyword(s):  
Heart Failure ◽  
The Mediterranean
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