Sílvia Fernanda Mardegan

ORCID: 0000-0003-3057-8973
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About
Contact & Profiles
Research Areas
  • Environmental and biological studies
  • Soil Management and Crop Yield
  • Oil Palm Production and Sustainability
  • Ecology and Vegetation Dynamics Studies
  • Isotope Analysis in Ecology
  • Aquatic Invertebrate Ecology and Behavior
  • Amazonian Archaeology and Ethnohistory
  • Plant Diversity and Evolution
  • Plant and animal studies
  • Freshwater macroinvertebrate diversity and ecology
  • Plant Water Relations and Carbon Dynamics
  • Geology and Paleoclimatology Research
  • Fern and Epiphyte Biology
  • Biological Control of Invasive Species
  • Sugarcane Cultivation and Processing
  • Fermentation and Sensory Analysis
  • Geological and Geochemical Analysis
  • Biofuel production and bioconversion
  • Plant responses to elevated CO2
  • Soil Carbon and Nitrogen Dynamics
  • Coconut Research and Applications
  • Geochemistry and Elemental Analysis
  • Growth and nutrition in plants
  • Environmental Sustainability and Education
  • Rural Development and Agriculture

Universidade Federal do Pará
2016-2022

Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul
2015

Secretaria de Agricultura e Abastecimento
2015

Universidade de São Paulo
2011-2012

National Institute of Amazonian Research
2008-2011

Methodist University of Piracicaba
2011

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...

10.1111/geb.13381 article EN Global Ecology and Biogeography 2021-08-30

The expansion of oil palm (Elaeis guineensis Jacq, Arecaceae) crops threatens tropical rainforests. It negatively impacts a series ecosystem services and functions, including carbon (C) sequestration dynamics, as well nutrient cycling. Such negative have pressured companies to adopt conservationist practices in production. And yet the conversion from conventional organic farming has gained space last decade, studies assessing effects on functioning are still scarce. Here, we assessed how...

10.1080/00380768.2022.2031285 article EN Soil Science & Plant Nutrition 2022-01-02

The variation in nitrogen use strategies and photosynthetic pathways among vascular epiphyte families was addressed a white-sand vegetation the Brazilian Central Amazon. Foliar carbon concentrations their isotopic composition (δ15N δ13C, respectively) were measured epiphytes (Araceae, Bromeliaceae Orchidaceae) host trees. tree Aldina heterophylla had higher foliar N concentration lower C:N ratio (2.1 ± 0.06% 23.6 0.8) than its dwellers. Tree δ15N differed only from that of orchids. Comparing...

10.1590/s0100-84042011000100003 article EN Revista Brasileira de Botânica 2011-03-01

Por possuírem ciclos de vida curtos, os macroinvertebrados aquáticos podem responder rapidamente às modificações ambientais, alterando a estrutura das suas populações e comunidades. O objetivo deste estudo foi determinar se há relação entre composição associados bancos Eichhornia crassipes o gradiente condutividade elétrica da água biomassa raízes destes bancos. No pico cheia 2005, 21 macrófitas aquáticas flutuantes dominados por E. foram amostrados no rio Negro (baixa < 30 µS cm-1), na...

10.1590/s0044-59672011000400007 article PT Acta Amazonica 2011-01-01
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