Jan Jacob Keizer

ORCID: 0000-0003-4833-0415
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About
Contact & Profiles
Research Areas
  • Fire effects on ecosystems
  • Soil erosion and sediment transport
  • Aeolian processes and effects
  • Landslides and related hazards
  • Hydrology and Watershed Management Studies
  • Plant Water Relations and Carbon Dynamics
  • Hydrology and Sediment Transport Processes
  • Flood Risk Assessment and Management
  • Rangeland and Wildlife Management
  • Ecology and Vegetation Dynamics Studies
  • Forest Biomass Utilization and Management
  • Environmental Toxicology and Ecotoxicology
  • Forest ecology and management
  • Toxic Organic Pollutants Impact
  • Soil Carbon and Nitrogen Dynamics
  • Agroforestry and silvopastoral systems
  • Soil and Water Nutrient Dynamics
  • Tree Root and Stability Studies
  • Horticultural and Viticultural Research
  • Plant Taxonomy and Phylogenetics
  • Fire dynamics and safety research
  • Mediterranean and Iberian flora and fauna
  • Water Quality Monitoring Technologies
  • Water resources management and optimization
  • Wind and Air Flow Studies

University of Aveiro
2016-2025

Centro de Estudos Ambientais e Marinhos
2014-2022

University of Alicante
2021

Wageningen University & Research
2021

Universidade da Coruña
2016

Universidad de La Rioja
2014

Eindhoven University of Technology
2002

University of Amsterdam
1996

Abstract Forest fires can greatly increase runoff and surface erosion rates. Post‐fire soil control measures are intended to minimize this response facilitate ecosystem recovery. In a few recent cases, hydromulch has been applied, consists of mixture organic fibers, water seeds. The objectives research were (i) analyze the effectiveness in reducing post‐fire sediment production (ii) determine underlying processes mechanisms that erosion. After wildfire occurred August 2008, 14 plots ranging...

10.1002/ldr.2236 article EN Land Degradation and Development 2013-07-09

After an initial evaluation of several solvents, the efficiency Soxhlet extractions with isopropanol/ammonia (s.g. 0.88) (70 : 30 v v; 24 h) in extracting compounds associated water repellency sandy soils was examined using a range repellent and wettable control (n = 15 4) from Australia, Greece, Portugal, The Netherlands, UK. Extraction role extracts causing soil by determining extract mass, sample organic carbon content (after drying at 20°C 105°C) pre- post-extraction, amounts aliphatic...

10.1071/sr04091 article EN Soil Research 2005-01-01

No risk, no reward.Companies must take risks to launch new products speedily and successfully.The ability diagnose manage is increasingly considered of vital importance in high-risk innovation.This article presents the Risk Diagnosing Methodology (RDM), which aims identify evaluate technological, organizational business product innovation.RDM was initiated, developed tested within a division Philips Electronics, multinational company audio, video lighting industry.On basis results senior...

10.1016/s0737-6782(02)00138-8 article EN Journal of Product Innovation Management 2002-05-01
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