Search results for "TLA"
showing 10 items of 1764 documents
Old World Megadroughts and Pluvials During the Common Era
2015
An atlas of megadroughts in Europe and in the Mediterranean Basin during the Common Era provides insights into climate variability.
Eröffnungsfeier des Passagierverkehrs in Riga vom neuen Bahnhof "Riga-Glawnaja" (Haupt-Bahnhof) über die neue Düna-Eisenbahnbrücke
1914
Teksts paralēli krievu, vācu un latviešu valodā.
Paleoclimatic and Paleoceanographic reconstruction of the Pleistocene – Holocene through the study of planktonic foraminifera of two sediment cores, …
2014
The study of climate and oceanographic setting in the recent past plays and important role to prevent what we can expect for the future. This research project is based on the study of two sedimentary cores (ATA13-OF-KT1 and ATA13-OF-KT18), collected during OCEANOGRAFLU 2013 oceanographic survey in Atlantic Ocean, southwestward of the Azores Islands, near the Mid-Atlantic ridge. In agreement with members of Paleobiodiversity and Paleoenvironmental Research Center belonging to the Department of Earth History (MNHN) of Paris, I’ll have to study these two cores, under the supervision of Prof. Annachiara Bartolini, member of this research unit, and Prof. Antonio Caruso (DiSTeM, University of Pal…
ECOHYDROLOGICAL MODELLING IN MEDITERRANEAN AREAS AND WETLANDS
2010
La seguente dissertazione verte sul campo di ricerca noto come Ecoidrologia. Sebbene tale scienza, che studia le mutue interazioni fra ciclo idrologico e gli ecosistemi naturali, sia stata recentemente oggetto di svariati studi, alcuni dei suoi numerosi aspetti rimangono tuttavia ancora alquanto inesplorati. L’obiettivo principale della presente tesi è quello di rivisitare la letteratura scientifica esistente sull’argomento, cercando di adattare concetti e modelli sviluppati per certi ecosistemi anche alle peculiarità di altri ambienti meno studiati, come quelli aridi e semiaridi tipici della zona Mediterranea o le cosiddette “wetlands”, zone umide e paludose. In particolare, viene approfon…
Monitoring Subaquatic Vegetation Using Sentinel-2 Imagery in Gallocanta Lake (Aragón, Spain)
2022
Remote sensing allows the study of aquatic vegetation cover in shallow lakes from the different spectral responses of the water as the vegetation grows from the bottom toward the surface. In the case of Gallocanta Lake, its seasonality and shallow depth (less than 2 m) allow us to appreciate the variations in the aquatic vegetation with the apparent color. Six common vegetation indices were tested, and the one with the best response was the so-called NDI45, which uses the normalized ratio between the far red (705 nm) and red (665 nm) bands. Our aims are to show the variations in the surface area covered by vegetation at the bottom of the lagoon, its growth and disappearance when drying occu…
Multiproxy dietary trait reconstruction in Pleistocene Hippopotamidae from the Mediterranean islands
2019
Abstract Geographically isolated insular species face energetic restrictions and commonly evolve adaptations that distinguish them from their mainland ancestors. During the Pleistocene, several Mediterranean islands were inhabited by now extinct Hippopotamidae. They underwent diverse changes in locomotion, dentition and body size. Based on these differences, it is supposed that they occupied different ecological niches depending on their respective faunal complexes and available resources. In this paper, we assess the paleoecology of dwarfed hippopotami from Crete, Malta, Sicily and Cyprus using a novel dental multiproxy approach. We applied dental topography analysis (SAGA-GIS) to measure …
Behavioral responses of Atlantic cod to sea temperature changes
2015
Understanding responses of marine species to temperature variability is essential to predict impacts of future climate change in the oceans. Most ectotherms are expected to adjust their behavior to avoid extreme temperatures and minimize acute changes in body temperature. However, measuring such behavioral plasticity in the wild is challenging. Combining 4 years of telemetry-derived behavioral data on juvenile and adult (30–80 cm) Atlantic cod (Gadus morhua), and in situ ocean temperature measurements, we found a significant effect of sea temperature on cod depth use and activity level in coastal Skagerrak. During summer, cod were found in deeper waters when sea surface temperature increase…
Unveiling community patterns and trophic niches of tropical and temperate ants using an integrative framework of field data, stable isotopes and fatt…
2018
Background: The use and partitioning of trophic resources is a central aspect of community function. On the ground of tropical forests, dozens of ant species may be found together and ecological mechanisms should act to allow such coexistence. One hypothesis states that niche specialization is higher in the tropics, compared to temperate regions. However, trophic niches of most species are virtually unknown. Several techniques might be combined to study trophic niche, such as field observations, fatty acid analysis (FAA) and stable isotope analysis (SIA). In this work, we combine these three techniques to unveil partitioning of trophic resources in a tropical and a temperate community. We d…
Livland-Estland-Ausstellung: zur Einführung in die Arbeitsgebiete der Ausstellung
1918
Abteilungen: 1. Landeskunde. 2. Geschichte. 3. Kirche. 4. Schule. 5. Schöne Literatur und Presse. 6. Malerei und Plastik. 7.Bünenwesen und Tonkultur. 8. Gesellschaftliche Kultur in Baltenlande. 9. Land und Forstwirtschaft, Fischerei, Jagd. 10. Städtekunde und Bevölkerungswesen. 11. Handel und Schiffahrt. 12. Eine Jahrhundert Rigascher Industrie.
Environmental Benefit of Improving Wastewater Quality: A Shadow Prices Approach for Sensitive Areas
2018
The use of effluents from wastewater treatment plants (WWTPs) as a non-conventional source of water for wetlands in arid and semi-arid regions is becoming the most-often sought solution for maintaining water flow in sensitive wetlands there. However, the managing effluent quality should be a requirement because excess nutrients (mainly nitrogen and phosphorus) can generate eutrophication problems in wetlands. In the Mediterranean area in general, wetlands are strongly vulnerable to eutrophication, which is why they are classified as sensitive areas. Our study uses a data set from 24 WWTPs, effluents of which are discharged to wetlands in the coast of Community of Valencia. We use the shado…