A5031900401- Pacific and Southeast Asian Studies
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Soil Carbon and Nitrogen Dynamics
- Ecology and Vegetation Dynamics Studies
- Archaeology and ancient environmental studies
- Soil Management and Crop Yield
- Peatlands and Wetlands Ecology
- Climate change and permafrost
- Plant Water Relations and Carbon Dynamics
- Soil and Water Nutrient Dynamics
- Mercury impact and mitigation studies
- Plant nutrient uptake and metabolism
- Forest Ecology and Biodiversity Studies
- Indigenous Studies and Ecology
- Forest ecology and management
- Ecology and biodiversity studies
- Marine and coastal ecosystems
- Plant Ecology and Soil Science
- Soil erosion and sediment transport
- Island Studies and Pacific Affairs
- Phytase and its Applications
- Conservation, Biodiversity, and Resource Management
- Geological formations and processes
- Freshwater macroinvertebrate diversity and ecology
Universitat de Barcelona
2013-2024
Centre for Research on Ecology and Forestry Applications
2015-2023
Universitat Autònoma de Barcelona
2015-2022
Consejo Superior de Investigaciones Científicas
2010-2022
Centre for Ecological Research
2022
Global Ecology Unit CREAF-CSIC-UAB
2017-2021
Research Applications (United States)
2020
Geociencias Barcelona
2012-2014
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...
Abstract We observed strong positive relationships between soil properties and forest dynamics of growth mortality across twelve primary lowland tropical forests in a phosphorus-poor region the Guiana Shield. Average tree (diameter at breast height) increased from 0.81 to 2.1 mm yr −1 along texture gradient 0 67% clay, increasing metal-oxide content. Soil organic carbon stocks top 30 cm ranged 118 tons C ha , phosphorus content 7 600 mg kg soil, relative abundance arbuscular mycorrhizal...
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...
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...
Peatlands are critical ecosystems for climate change mitigation due to their substantial soil organic carbon (C) stocks, which have accumulated over millennia. Although they cover only 3% of the Earth's land surface, peatlands store a third world's C, exceeding C stored in forests and atmosphere combined. However, these highly sensitive human activities, threaten ability function as net sinks.The Pyrenean peatlands, located at intersection Euro-Siberian Mediterranean bioclimatic zones,...
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...
OPINION article Front. Ecol. Evol., 29 March 2016Sec. Paleoecology Volume 4 - 2016 | https://doi.org/10.3389/fevo.2016.00029
Acid phosphatase produced by plants and microbes plays a fundamental role in the recycling of soil phosphorus (P). A quantification spatial variation potential acid activity (AP) on large scales its drivers can help to reduce uncertainty our understanding bio-availability P. We applied two machine-learning methods (Random forests back-propagation artificial networks) simulate patterns AP across Europe scaling up 126 site observations from field samples measured laboratory, using 12...
Abstract Resorption is the active withdrawal of nutrients before leaf abscission. This mechanism represents an important strategy to maintain efficient nutrient cycling; however, resorption poorly characterized in old‐growth tropical forests growing nutrient‐poor soils. We investigated from leaves 39 tree species two on Guiana Shield, French Guiana, investigate whether efficiencies varied with soil nutrient, seasonality, and traits. The stocks P leaves, litter, were low at both sites,...
Soil fauna is a key control of the decomposition rate leaf litter, yet its interactions with litter quality and soil environment remain elusive. We conducted experiment across different topographic levels within landscape replicated in two rainforest sites providing natural gradients fertility to test hypothesis that low nutrient availability increases strength over decomposition. crossed these data large dataset 44 variables characterizing biotic abiotic microenvironment each sampling point...
This paper reviews the existing hypotheses concerning cultural shift from Ancient Cult (AC) to Birdman (BC) that occurred on Easter Island (Rapa Nui) during last millennium and introduces a holistic new hypothesis called CLAFS (Climate-Landscape-Anthropogenic Feedbacks Synergies), which considers variety of potential drivers change their interactions. The can be tested with future paleoecological studies sedimentary sequences such as continuous coherent record encompassing Rano Kao...
The study of mercury accumulation in peat cores provides an excellent opportunity to improve the knowledge on cycling and depositional processes at remote locations far from pollution sources. We analyzed concentrations 150 samples two Rano Aroi (Easter Island, 27° S) selected vegetation present-day flora island, order characterize for last ~71 ka BP. showed values ranging between 35 200 ng g−1, except a large maxima (~1000 g−1) which occurred end Last Glacial Maximum (LGM, ~20 cal BP) both...
Easter Island (Rapa Nui) deforestation has traditionally been viewed as a single event, synchronous in time and space across the island caused by Polynesian settlers. However, recent studies have challenged this idea, introducing concept of spatiotemporal heterogeneity suggesting role for climate change. This paper presents continuous paleovegetation record last millennium (~960 to ~1710 CE), based on palynological analysis core from Lake Kao. During interval, was gradual, with three main...