A5002652646- Geology and Paleoclimatology Research
- Archaeology and ancient environmental studies
- Isotope Analysis in Ecology
- Pleistocene-Era Hominins and Archaeology
- Geological formations and processes
- Latin American history and culture
- Research Data Management Practices
- Climate variability and models
- Marine and coastal ecosystems
- Environmental and Cultural Studies in Latin America and Beyond
- Forensic Anthropology and Bioarchaeology Studies
- Species Distribution and Climate Change
- Hydrology and Sediment Transport Processes
- Geological and Geophysical Studies
- Tree-ring climate responses
- Smart Materials for Construction
- Odor and Emission Control Technologies
- Environmental DNA in Biodiversity Studies
- Latin American rural development
- Hybrid Renewable Energy Systems
- Climate Change Policy and Economics
- Atmospheric and Environmental Gas Dynamics
- Electric Vehicles and Infrastructure
- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
Université de Montréal
2024-2025
McGill University
2020-2023
Swiss Federal Institute of Aquatic Science and Technology
2023
Walter Reed National Military Medical Center
2012
Major advances in combat casualty care have led to increased survival of patients with complex extremity trauma. Invasive fungal wound infections (IFIs) are an uncommon, but increasingly recognized, complication following trauma that require greater understanding risk factors and clinical findings reduce morbidity.The patient population includes US military personnel injured during from June 2009 through December 2010. Case definition required necrosis on successive debridements IFI evidence...
Decentralization of energy generation to minimize distribution costs and maximize local production capacity.
The analysis of faecal stanols in lake sediment cores offers a novel opportunity to reconstruct human population change, assuming that variability stanol concentration is reliable proxy for relative populations. ancient lowland Maya Mesoamerica represents an important society whose demographic dynamics many locations remain uncertain. We apply the core retrieved from adjacent archaeological site Itzan, centre southwestern lowlands. sedimentary record Laguna Itzan implies substantial...
This paper reflects the discussions of early and mid-career researchers (EMCRs) during World Climate Research Programme Open Science Conference 2023 EMCRs Symposium, to advance climate knowledge for greater transformative power in society impact on policy-making. These focused three key priority challenges: how produce robust, usable, used information at local scale; address research gaps Global South; could support policy-making with information. We present here our perspective these major...
Abstract Many governments and organisations are currently aligning many aspects of their policies practices to the sustainable development goals (SDGs). Achieving SDGs should increase social-ecological resilience shocks like climate change its impacts. Here, we consider relationship amongst three elements—the SDGs, change—as a positive feedback loop. We argue that long-term memory encoded in historical, archaeological related ‘palaeo-data’ is central understanding each these elements loop,...
Abstract Greenhouse gas emissions from permafrost organic carbon decomposition in lakes and rivers can accelerate global warming. We used radiocarbon ( 14 C) measurements to determine the predominant sources of dissolved (DOC), particulate (POC), inorganic (DIC), methane (CH 4 ) five thermokarst three an area widespread degradation Northern Quebec assess contributions thawing other old (fixed before CE 1950) reservoirs. compared emission pathways (dissolved ebullition), seasons (summer...
This article summarises the scientific methods used to study past climate in Maya Lowlands. It also provides an overview of strategies employed by ancient adapt natural change and address issues associated with their growing population. The response these challenges, including severe droughts between 800 1000 CE, culminated a societal restructuring sometimes referred as “the Classic collapse.” story Lowland may serve “lesson” going forward, we confront similar twenty-first century, e.g.,...
Abstract Paleolimnological evidence indicates the ancient Maya transformed terrestrial ecosystems by felling forest vegetation to construct large civic-ceremonial centers and expand agriculture. Human settlements influenced lacustrine environments but effects of activities on aquatic remain poorly studied. Here we analyzed a sediment core from Lake Petén Itzá, Guatemala, infer paleoenvironmental changes resulting occupation archaeological site Nixtun-Ch’ich’. Increases in charcoal fecal...
Owing to its specialised methodology, palaeoecology is often regarded as a separate field from ecology, even though it essential for understanding long-term ecological processes that have shaped the ecosystems ecologists study and manage. Despite advances in modelling, sample dating, proxy-based reconstructions facilitating direct comparison of palaeoecological data with neo-ecological data, most scientific knowledge derived studies remains siloed. We surveyed group palaeo-researchers...
Abstract This article is composed of three independent commentaries about the state Integrated, Coordinated, Open, Networked (ICON) principles (Goldman et al., 2021, https://doi.org/10.1002/essoar.10508554.1 ) in AGU section paleoclimatology and paleoceanography (P&P), a discussion on opportunities challenges adopting them. Each commentary focuses different topic: (Section 2) Global collaboration, technology transfer application, reproducibility, data sharing infrastructure; 3) Local...
The Northern Mesoamerican Frontier was a complex multicultural region characterized by frequent human settlement changes and shifts in agricultural conditions during the Late Preclassic period (~400 BCE-150 CE). Here, we report high-resolution paleoenvironmental record from varved sedimentary sequence of crater maar La Alberca which spans CE) to part Early Classic (~150 CE-250 corresponding Chupicuaro phase (400 BCE-100 Mixtlan (0–250 Our work aims study rise agriculture provide insights...
Abstract The 14 C content of sedimentary organic matter (OM) and specific molecules provide valuable information on the source age OM stored in sediments, but these data are limited for tropical fluvial lake sediments. We analyzed bulk OM, palmitic acid (C 16 ), long‐chain n ‐alkanoic acids 24 , 26 28 within sediments catchment Lake Izabal, a large tectonic basin Guatemala. combined measurements with compound‐specific δ 13 measurements, as well sediment carbon to nitrogen (OC:N) ratios,...
Paleoclimate information has played an instrumental role in showing how fast climate can vary and large these changes be. It provided the first vivid demonstration of relationships between atmospheric greenhouse gas concentrations surface air temperatures, as well striking representations change impacts possible feedbacks within system, such those associated with vegetation or ice sheet changes. Here, a short review recent advances paleoclimate studies is provided, objective what this on...
May 01 2023 ITZAN Benjamin Keenan, Keenan is an interdisciplinary biogeochemist interested in using insights from the past to inform responses contemporary issues, such as anthropogenic climate change. Search for other works by this author on: This Site Google Scholar Timothy Thomasson a digital artist whose work questions ways moving images are produced and consumed within historic contexts, particularly examining effects computer generated have on society, culture, perception. Author...
Due to a specialised methodology, palaeoecology is often regarded as separate field from ecology even though it essential understand long-term ecological processes that have shaped ecosystems ecologists study and manage. Even advances in modelling, sample dating, proxy-based reconstructions enabled direct comparison of palaeoecological data with neo-ecological data, most the scientific knowledge derived studies remains siloed. We surveyed group palaeo-researchers experience crossing divide...
Faecal stanols offer an exciting opportunity to determine population change in the past but controls of their concentrations and ratios within lake sediments are not well understood. We present variability stanol from lakes across environmental gradients, both between climatic land-use gradients Mexico, Guatemala, Belize order factors controlling preservation degradation lacustrine sediments. also measured physical properties such as dissolved oxygen, pH, water column temperature estimated...