- Hydrology and Watershed Management Studies
- Fish Ecology and Management Studies
- Hydrology and Sediment Transport Processes
- Water resources management and optimization
- Soil erosion and sediment transport
- Flood Risk Assessment and Management
- Groundwater and Isotope Geochemistry
- Soil and Water Nutrient Dynamics
- Water Quality and Pollution Assessment
- Fish biology, ecology, and behavior
- Water-Energy-Food Nexus Studies
- Transboundary Water Resource Management
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Ecosystems and Biodiversity
- Hydropower, Displacement, Environmental Impact
- Groundwater flow and contamination studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Hydrological Forecasting Using AI
- Conservation, Biodiversity, and Resource Management
- Isotope Analysis in Ecology
- Water Resource Management and Quality
- Marine and coastal ecosystems
- Plant Water Relations and Carbon Dynamics
- Geography and Environmental Studies
- Cryospheric studies and observations
Delft University of Technology
2013-2025
IHE Delft Institute for Water Education
2016-2025
Environmental and Water Resources Engineering
2020
Michael & Associates
2018
University of the Pacific
2018
Florida International University
2002-2012
Seattle University
1994-2005
University of Washington
1994-2000
Research Triangle Park Foundation
1999
Environmental Protection Agency
1999
Foreword Preface 1. Introduction 2. Catchments and the Physical Template 3. Riparian Typology 4. Structural Patterns 5. Biotic Functions of Riparia 6. Biophysical Connectivity 7. Disturbance Agents Change 8. Management 9. Conservation 10. Restoration 11. Synthesis Bibliography Index
Despite their limited spatial extent, freshwater ecosystems host remarkable biodiversity, including one-third of all vertebrate species. This biodiversity is declining dramatically: Globally, wetlands are vanishing three times faster than forests, and populations have fallen more twice as steeply terrestrial or marine populations. Threats to well documented but coordinated action reverse the decline lacking. We present an Emergency Recovery Plan bend curve loss. Priority actions include...
Summary 1. Natural biogeochemical processes and diverse communities of aquatic biota regulate freshwater quantity quality in ways that are not sufficiently acknowledged nor appreciated by the water resources management community. The establishment enforcement environmental flow requirements offer promising means to improve care for these critical services. This Special Issue provides new insights novel techniques determine, protect restore ecologically socially sustainable regimes, thereby...
Abstract. Some of the most valued natural and cultural landscapes on Earth lie in river basins that are poorly gauged have incomplete historical climate runoff records. The Mara River Basin East Africa is such a basin. It hosts internationally renowned Mara-Serengeti landscape as well rich mixture indigenous cultures. sole source surface water to during dry season periods drought. During recent years, flow has become increasingly erratic, especially upper reaches, resource managers hampered...
A decade ago, scientists and practitioners working in environmental water management crystallised the progress direction of flows science, practice policy The Brisbane Declaration Global Action Agenda (2007), during 10th International Riversymposium Environmental Flows Conference held Brisbane, Australia. 2007 highlights significance allocations for humans freshwater-dependent ecosystems, sets out a nine-point global action agenda. This was first consensus document that bought together...
We determined the concentrations and compositions of coarse particulate (>63 µm), fine (0.1–63 dissolved (0.001–0.1 µm) organic matter collected along a river reach extending from first‐order stream in Bolivian Andes, through Beni River system, to lower Madeira Amazon Rivers. Dissolved carbon (DOC) increased down total ~80 350 µM. The percentage DOC with molecular weight greater than ~1,000 atomic mass units that could be isolated by ultrafiltration also downstream 40 80%. Weight...
ABSTRACT Although mountains often constitute only a small fraction of river basin area, they can supply the bulk transported materials and exert strong regulatory controls on ecological characteristics reaches floodplains downstream. The Amazon River exemplifies this phenomenon. Its muddy waters its expansive highly productive white-water are largely products forces originating in distant Andean mountain ranges. Amazon's character has been shaped by these influences for more than 10 million...
Data on the functional composition of invertebrates in tropical streams are needed to develop models ecosystem functioning and assess anthropogenic effects ecological condition. We collected macroinvertebrates during dry wet seasons from pools riffles 10 open- closed-canopy Kenyan highland streams. classified into feeding groups (FFGs), which we used riparian condition season organization. cluster analysis gut contents classify 86 taxa as collectors, predators, scrapers, or shredders. 23...
Environmental flows (e-flows) aim to mitigate the threat of altered hydrological regimes in river systems and connected waterbodies are an important component integrated strategies address multiple threats freshwater biodiversity. Expanding accelerating implementation e-flows can support conservation help restore biodiversity resilience hydrologically water-stressed rivers ecosystems. While there have been significant developments e-flow science, assessment, societal acceptance, within water...
Equatorial rivers of East Africa exhibit unusually complex seasonal and inter-annual flow regimes, aquatic adjacent terrestrial organisms have adapted to cope with this variability. This study examined the annual regime over past 40 years for three gauging stations on Mara River in Kenya Tanzania, which is international importance because it only perennial river traversing Mara-Serengeti ecoregion. Select environmental components were quantified converted ecologically relevant hydraulic...
In many high altitude river basins, the hydro-climatic regimes and spatial temporal distribution of precipitation are little known, complicating efforts to quantify current future water availability. Scarce, or non-existent, gauged observations at altitudes coupled with complex weather systems orographic effects further prevent a realistic comprehensive assessment precipitation. Quantifying contribution from seasonal snow glacier melt runoff for altitude, dependent region is especially...