A5031187624- Geology and Paleoclimatology Research
- Pacific and Southeast Asian Studies
- Isotope Analysis in Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Polar Research and Ecology
- Marine and coastal ecosystems
- Archaeology and ancient environmental studies
- Pleistocene-Era Hominins and Archaeology
- Geological and Geophysical Studies Worldwide
- Diatoms and Algae Research
- Archaeological and Geological Studies
- Cryospheric studies and observations
- Tree-ring climate responses
- Climate variability and models
- Maritime and Coastal Archaeology
- Climate change and permafrost
- Geological formations and processes
- Freshwater macroinvertebrate diversity and ecology
- Soil and Water Nutrient Dynamics
- Coastal wetland ecosystem dynamics
- Mediterranean and Iberian flora and fauna
- Marine and environmental studies
- Archaeological and Historical Studies
- Protist diversity and phylogeny
- Heavy metals in environment
Centre for Research on Ecology and Forestry Applications
2016-2025
Universitat Autònoma de Barcelona
2015-2025
University of Johannesburg
2022-2024
Austrian Academy of Sciences
2018
Consejo Superior de Investigaciones Científicas
2011-2017
University of Maine
2016
University of Essex
2016
Loughborough University
2006-2016
Centre d'Estudis Avançats de Blanes
2008-2015
Queen's University
2004-2008
High mountain lakes offer research opportunities beyond what could be expected from their quantitative relevance in the Earth system.In this article we present a brief summary of carried out Pyrenees last twenty years by group limnology Centre for Mountain Research (CRAM) University Barcelona.The studies can included three main topics: life extreme conditions, catchment-lake relationships and environmental changes.
The increase in aridity, mainly by decreases precipitation but also higher temperatures, is likely the main threat to diversity and survival of Mediterranean forests. Changes land use, including abandonment extensive crop activities, mountains remote areas, increases human settlements demand for more resources with resulting fragmentation landscape, hinder establishment appropriate management tools protect forests their provision services biodiversity. Experiments observations indicate that...
Summary 1. Species assemblages of diatoms, rotifers, chydorids, planktonic crustaceans and chironomids were studied in 235 alpine lakes the Alps, Pyrenees, Tatras (Western Carpathians), Retezat (Southern Carpathians) Rila Mountains (Balkans). 2. For all taxonomic groups we found a hierarchical structure community assemblage using distinct scales lake clustering (number k ‐means groups) based on species composition similarity (Hellinger distance). We determined optimal partition types (i.e....
Abstract The North Atlantic Oscillation (NAO) is the major atmospheric mode that controls winter European climate variability because its strength and phase determine regional temperature, precipitation storm tracks. NAO spatial structure associated climatic impacts over Europe are not stationary making it crucial to understanding past evolution in order improve predictability of future scenarios. In this regard, there has been a dramatic increase number studies aimed at reconstructing...
The Kangerlussuaq area of southwest Greenland encompasses diverse ecological, geomorphic, and climate gradients that function over a range spatial temporal scales. Ecosystems from the microbial communities on ice sheet moisture-stressed terrestrial vegetation (and their associated herbivores) to freshwater oligosaline lakes. These ecosystems are linked by dynamic glacio-fluvial-aeolian geomorphic system transports water, geological material, organic carbon nutrients glacier surface adjacent...
Significance We use a diverse set of lake and landscape proxy indicators to characterize initial human occupation its impacts on the Azores Archipelago. The these islands began between 700 850 CE, years earlier than suggested by documentary sources. These early occupations caused widespread ecological disturbance raise doubts about islands' presumed pristine nature during Portuguese arrival. earliest explorers arrived at end Middle Ages, when temperatures were higher average, westerly winds...
Abstract. This paper reviews multi-proxy paleoclimatic reconstructions with robust age-control derived from lacustrine, dendrochronological and geomorphological records characterizes the main environmental changes that occurred in Southern Pyrenees during last millennium. Warmer relatively arid conditions prevailed Medieval Climate Anomaly (MCA, ca. 900–1300 AD), a significant development of xerophytes Mediterranean vegetation limited deciduous tree formations (mesophytes). The Little Ice...
The rate of bitumen extraction in northeastern Alberta, Canada, is outpacing the state ecological understanding region, so that extent potential disturbances caused by atmospheric deposition remains largely unknown. Atmospheric SO 2 emissions from Fort McMurray region Alberta (∼300 t·day –1 ) constitute ∼5% Canadian total. Combined with an estimated NO x production ∼300 , these have to acidify surface waters. Diatom assemblages dated sediment cores eight acid-sensitive lakes were analyzed...
Abstract Prediction of high latitude response to climate change is hampered by poor understanding the role nonlinear changes in ecosystem forcing and response. While effects are often delayed or dampened internal dynamics, recent warming events Arctic have driven rapid environmental response, raising questions how terrestrial freshwater systems this region may shift abrupt change. We quantified responses West Greenland using long-term monitoring paleoecological reconstructions. Using >40...
Collapses of food producer societies are recurrent events in prehistory and have triggered a growing concern for identifying the underlying causes convergences/divergences across cultures around world. One most studied used as paradigmatic case is population collapse Rapa Nui society. Here, we test different hypotheses about it by developing explicit dynamic models that integrate feedbacks between climatic, demographic ecological factors underpinned socio-cultural trajectory these people. We...
The reigning paradigm holds that Easter Island suffered an eco-societal collapse (ecocidal or not) sometime in the last millennium, prior to European contact (AD 1720). We discuss some novel palaeoecological and archaeological evidence challenges this assumption. use case study propose a closer collaboration between archaeology, palaeoecology palaeoccology. This allows us unravel historical trends which both environmental changes human activities might have acted, alone coupled, as drivers...
Abstract The chronostratigraphy of the sedimentary record Limnopolar Lake, located on Byers Peninsula (Livingston Island, South Shetland Islands, Maritime Antarctica), is described based radionuclides and radiocarbon age dating. oldest moss macrofossil was 6700±50 yr bp (7510±80 cal ) from which age/depth model estimates a basal for c. 8300 , suggesting an earlier deglaciation than reported in previous studies. Lithological units other stratigraphic zones are throughout sediment core,...
Abstract The caldera collapse of Deception Island Volcano, Antarctica, was comparable in scale to some the largest eruptions on Earth over last several millennia. Despite its magnitude and potential for far-reaching environmental effects, age this event has never been established, with estimates ranging from late Pleistocene 3370 years before present. Here we analyse nearby lake sediments which identify a singular produced by Island’s that occurred 3980 ± 125 calibrated erupted tephra record...