A5012555741- Climate change and permafrost
- Cryospheric studies and observations
- Isotope Analysis in Ecology
- Environmental and biological studies
- Atmospheric and Environmental Gas Dynamics
- Geographies of human-animal interactions
- Muscle metabolism and nutrition
- Plant Diversity and Evolution
- Human-Animal Interaction Studies
- Forest ecology and management
- Plant and animal studies
- Mercury impact and mitigation studies
- Nutritional Studies and Diet
- Meat and Animal Product Quality
- Conservation, Biodiversity, and Resource Management
- Soil Management and Crop Yield
- Marine animal studies overview
- Ecology and Vegetation Dynamics Studies
- Geological Studies and Exploration
- Soil Carbon and Nitrogen Dynamics
- Methane Hydrates and Related Phenomena
- Soil erosion and sediment transport
Universität Hamburg
2021-2023
Universidade de São Paulo
2019-2020
Abstract Motivation Leaf traits represent an important component of plant functional strategies, and those related to carbon fixation nutrient acquisition form the leaf economics spectrum. However, observations are underrepresented in tropical regions comparison with temperate areas. Brazil, a country continental scale vast biodiversity is timely example, where many biomes impacted by human activities climate change. relevant understand vegetation responses these impacts remain poorly...
Abstract Arctic warming causes permafrost thaw and accelerates microbial decomposition of soil organic matter (SOM) to carbon dioxide (CO 2 ) methane (CH 4 ). The determining factors for the ratio between CO CH formation are still not well understood due scarce in situ measurements, particularly remote regions. We quantified :CH ratios SOM wet dry tundra soils by using fluxes from clipped plots vegetated plots. At water‐saturated site, decreased sharply 95 at beginning July about 10 August...
Abstract Simulations using land surface models suggest future increases in Arctic methane emissions to be limited by the thaw-induced drying of permafrost landscapes. Here we use Max Planck Institute Earth System Model show that this constraint may weaker than previously thought owing compensatory atmospheric feedbacks. In two sets extreme scenario simulations, a modification hydrology resulted diverging hydroclimatic trajectories that, however, led comparable fluxes. While wet showed almost...
Background Brazil is a low- to medium-income country and has the second largest pet food market in world with 8% of consumption. The lowest-income social class spends around 17% their domestic budget on other items related pets. Consumers are frequently misled by advertising as there no precise information about main sources protein, carbohydrates fat labels, Brazilian industry can legally claim that products contain certain like salmon or beef even if they use just flavoring compound....
Based on the assumptions that human food is available for dogs and isotope diet–tissue differences are similar in humans, ‘canine surrogacy approach’ (CSA) has been used to infer patterns of ancient populations. The goal this study was test CSA urban (Brasília Piracicaba) rural (Ubatuba Maraã) areas. hair C N ratios modern were compared with those fingernails from different regions Brazil. Our results showed a correlation between dog isotopes values: areas δ15N humans not statistically...
Considering the increasing pet owner's concern about food their pets are consuming, in this study we investigated origin of main ingredients wet and dry foods produced Brazil using stable isotope ratios carbon nitrogen. We concluded that chicken pork seem to be dominant most samples, with larger proportions cat food. Even showing 'beef' as ingredient on label, found a low proportion bovine products both foods. Comparing contribution plant-derived (C3 C4 plants) animal-derived (chicken–pork,...
<p>Fighting climate change has never been so urgent as today. As geoscientific research advances, more realistic and appalling future scenarios are unraveled. Decreasing greenhouse gases (GHG) emissions is not sufficient to avoid a bad outcome; hence, mitigation actions needed reduce climate-related risks in the future. The depletion of soil organic carbon (SOC) pool due land use degradation have substantially contributed increase atmospheric CO<sub>2...
<p>In the last two decades, there were registered record high permafrost temperatures promoting thawing and leading to additional CO<sub>2</sub> CH<sub>4</sub> emissions. It is crucial assess amount of C that mineralized CH<sub>4</sub>, due its higher global warming potential (GWP) compared CO<sub>2</sub>. The role in total emissions mainly governed by hydrological...