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G. Gettel · SciRah

Researcher profile · Semantic Scholar

G. Gettel

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G. Gettel — researcher profile on SciRah

h-index: 22
Works: 62
Citations: 1,487

Most-cited papers

Macroinvertebrate functional feeding groups in Kenyan highland streams: evidence for a diverse shredder guild
Frank Masese, Nzula Kitaka, J. Kipkemboi, G. Gettel +2 more
2014Freshwater Science153 citations Open access
Semantic Scholar
A Geomorphic–Trophic Model for Landscape Control of Arctic Lake Food Webs
A. Hershey, G. Gettel, M. E. McDonald, Michael C. Miller +5 more
1999109 citations
Semantic Scholar
Developments in water quality monitoring and management in large river catchments using the Danube River as an example
D. Chapman, C. Bradley, G. Gettel, I. Hatvani +7 more
2016107 citations Open access
Semantic Scholar
Nitrogen Fixation in Surface Soils and Vegetation in an Arctic Tundra Watershed: A Key Source of Atmospheric Nitrogen
S. Hobara, C. McCalley, K. Koba, A. Giblin +3 more
200684 citations Open access
Semantic Scholar
Influence of catchment land use and seasonality on dissolved organic matter composition and ecosystem metabolism in headwater streams of a Kenyan river
Frank Masese, J. S. Salcedo-Borda, G. Gettel, K. Irvine +1 more
2016Biogeochemistry76 citations
Semantic Scholar
Legacy Effects in Material Flux: Structural Catchment Changes Predate Long-Term Studies
D. Bain, M. Green, J. Campbell, John F. Chamblee +18 more
201274 citations Open access
Semantic Scholar
Drip fertigation promotes water and nitrogen use efficiency and yield stability through improved root growth for tomatoes in plastic greenhouse production
Jing Hu, G. Gettel, Zhao-Bo Fan, Hao-Feng Lv +6 more
202169 citations
Semantic Scholar
Physical, chemical, and biotic effects on arctic zooplankton communities and diversity
W. O'Brien, M. Barfield, N. Bettez, G. Gettel +7 more
200467 citations Open access
Semantic Scholar
Litter processing and shredder distribution as indicators of riparian and catchment influences on ecological health of tropical streams
Frank Masese, Nzula Kitaka, J. Kipkemboi, G. Gettel +2 more
201465 citations
Semantic Scholar
Land Use, Not Stream Order, Controls N2O Concentration and Flux in the Upper Mara River Basin, Kenya
R. Mwanake, G. Gettel, K. Aho, D. W. Namwaya +3 more
2019Journal of Geophysical Research - Biogeosciences52 citations Open access
Semantic Scholar
Linking Hydrology, Ecosystem Function, and Livelihood Outcomes in African Papyrus Wetlands Using a Bayesian Network Model
A. V. van Dam, J. Kipkemboi, M. Rahman, G. Gettel
2013Wetlands (Wilmington, N.C.)49 citations
Semantic Scholar
Unaccounted CO2 leaks downstream of a large tropical hydroelectric reservoir
E. Calamita, A. Siviglia, G. Gettel, M. Franca +4 more
2021Proceedings of the National Academy of Sciences of the United States of America48 citations Open access
Semantic Scholar
Livestock enclosures in drylands of Sub-Saharan Africa are overlooked hotspots of N2O emissions
K. Butterbach-Bahl, G. Gettel, R. Kiese, K. Fuchs +4 more
2020Nature Communications48 citations Open access
Semantic Scholar
Are Large Herbivores Vectors of Terrestrial Subsidies for Riverine Food Webs?
Frank Masese, K. Abrantes, G. Gettel, S. Bouillon +2 more
2015Ecosystems40 citations Open access
Semantic Scholar
Basin‐scale estimates of greenhouse gas emissions from the Mara River, Kenya: Importance of discharge, stream size, and land use/land cover
R. Mwanake, G. Gettel, Clarisse Ishimwe, E. Wangari +2 more
2022Limnology and Oceanography39 citations Open access
Semantic Scholar
Effects of agricultural land use on sediment and nutrient retention in valley-bottom wetlands of Migina catchment, southern Rwanda.
Abias Uwimana, A. V. van Dam, G. Gettel, K. Irvine
2018Journal of Environmental Management37 citations Open access
Semantic Scholar
Contrasting Responses of Nitrogen-Fixation in Arctic Lichens to Experimental and Ambient Nitrogen and Phosphorus Availability
M. Weiss, S. Hobbie, G. Gettel
200536 citations Open access
Semantic Scholar
Trophic structure of an African savanna river and organic matter inputs by large terrestrial herbivores: A stable isotope approach
Frank Masese, K. Abrantes, G. Gettel, K. Irvine +2 more
2018Freshwater Biology33 citations Open access
Semantic Scholar
Anthropogenic activities significantly increase annual greenhouse gas (GHG) fluxes from temperate headwater streams in Germany
R. Mwanake, G. Gettel, E. Wangari, C. Glaser +4 more
2023Biogeosciences29 citations Open access
Semantic Scholar
Effects of River Discharge and Land Use and Land Cover (LULC) on Water Quality Dynamics in Migina Catchment, Rwanda
Abias Uwimana, A. V. van Dam, G. Gettel, B. Bigirimana +1 more
2017Environmental Management28 citations Open access
Semantic Scholar
The potential importance of soil denitrification as a major N loss pathway in intensive greenhouse vegetable production systems
W. Qasim, Yiming Zhao, L. Wan, Hao-Feng Lv +3 more
2021Plant and Soil24 citations Open access
Semantic Scholar
The effects of grazing by the snail, Lymnaea elodes, on benthic N2 fixation and primary production in oligotrophic, arctic lakes
G. Gettel, A. Giblin, R. Howarth
200724 citations Open access
Semantic Scholar
Number of Chamber Measurement Locations for Accurate Quantification of Landscape‐Scale Greenhouse Gas Fluxes: Importance of Land Use, Seasonality, and Greenhouse Gas Type
E. Wangari, R. Mwanake, D. Kraus, C. Werner +5 more
2022Journal of Geophysical Research - Biogeosciences22 citations Open access
Semantic Scholar
The Impact of Wastewater Discharge and Agriculture on Water Quality and Nutrient Retention of Namatala Wetland, Eastern Uganda
S. Namaalwa, A. V. van Dam, G. Gettel, R. Kaggwa +2 more
2020Frontiers in Environmental Science22 citations Open access
Semantic Scholar
Controls of Benthic Nitrogen Fixation and Primary Production from Nutrient Enrichment of Oligotrophic, Arctic Lakes
G. Gettel, A. Giblin, R. Howarth
2013Ecosystems21 citations Open access
Semantic Scholar
Educating for action: Aligning skills with policies for sustainable development in the Danube river basin.
K. Irvine, G. Weigelhofer, I. Popescu, Ellen Pfeiffer +7 more
2016Science of the Total Environment19 citations
Semantic Scholar
Drivers of water quality in Afromontane-savanna rivers
Elizabeth W. Wanderi, G. Gettel, G. Singer, Frank Masese
2022Frontiers in Environmental Science18 citations Open access
Semantic Scholar
Effective denitrification scales predictably with water residence time across diverse systems
M. Green, W. Wollheim, N. Basu, G. Gettel +3 more
200914 citations Open access
Semantic Scholar
Interactive effects of catchment mean water residence time and agricultural area on water physico-chemical variables and GHG saturations in headwater streams
R. Mwanake, G. Gettel, E. Wangari, K. Butterbach-Bahl +1 more
2023Frontiers in Water11 citations Open access
Semantic Scholar
Identifying landscape hot and cold spots of soil greenhouse gas fluxes by combining field measurements and remote sensing data
Elizabeth Gachibu Wangari, Ricky Mwangada Mwanake, T. Houska, D. Kraus +4 more
2023Biogeosciences11 citations Open access
Semantic Scholar
A comparison of whole and thin-sectioned otolith aging techniques and validation of annuli for Arctic grayling
G. Gettel, C. Harvey, L. Deegan
199710 citations
Semantic Scholar
Classification of Geomorphic Units and Their Relevance for Nutrient Retention or Export of a Large Lowland Padma River, Bangladesh: A NDVI Based Approach
M. Gani, J. van der Kwast, M. McClain, G. Gettel +1 more
2022Remote Sensing8 citations Open access
Semantic Scholar
Elevated in-stream CO2 concentration stimulates net-N2O production from global fluvial ecosystems.
R. Mwanake, G. Gettel, E. Wangari, G. W. Macharia +5 more
2025Water Research7 citations Open access
Semantic Scholar
Editorial: Freshwater science in Africa
Frank Masese, Francis Ofurum Arimoro, T. Dalu, G. Gettel
2023Frontiers in Environmental Science7 citations Open access
Semantic Scholar
Spatial-temporal patterns of foliar and bulk soil 15N isotopic signatures across a heterogeneous landscape: Linkages to soil N status, nitrate leaching, and N2O fluxes
Elizabeth Gachibu Wangari, R. Mwanake, T. Houska, David Kraus +7 more
2024Soil Biology and Biochemistry6 citations Open access
Semantic Scholar
RATES, IMPORTANCE, AND CONTROLS OF NITROGEN FIXATION IN OLIGOTROPHIC ARCTIC LAKES, TOOLIK, ALASKA
G. Gettel
20066 citations
Semantic Scholar
Macroinvertebrate functional responses to human disturbance and flow cessation in Afromontane-savannah rivers
Christine A.A. Owade, H. Kaiser, G. Simiyu, Godfrey Owuor +3 more
2025Ecohydrology & Hydrobiology4 citations
Semantic Scholar
The role of agricultural fertilization intensity on fluvial GHG fluxes from tropical and temperate catchments.
R. Mwanake, G. Gettel, E. Wangari, K. Butterbach-Bahl +1 more
2025Journal of Environmental Management3 citations Open access
Semantic Scholar
The geomorphic—trophic hypothesis for arctic lake food webs
A. Hershey, G. Gettel, M. E. McDonald, Michael C. Miller +5 more
20003 citations
Semantic Scholar
Assessing land use changes and agricultural practices in highland valley-bottom wetlands in Taita Hills, Kenya.
Sharon Gubamwoyo, Thomas Hein, J. Heiskanen, D. G. Kisha +8 more
2025Journal of Environmental Management2 citations Open access
Semantic Scholar
Are Large Herbivores Vectors of Terrestrial Subsidies for Riverine Food Webs?
Frank Masese, K. Abrantes, G. Gettel, S. Bouillon +2 more
2015Ecosystems2 citations Open access
Semantic Scholar
Estimation of potential denitrification and its spatiotemporal dynamics in seasonally inundated geomorphic units of a large tropical river using satellite data.
M. Gani, A. V. van Dam, J. van der Kwast, Michael E. McClain +2 more
2025Science of the Total Environment1 citations Open access
Semantic Scholar
Remote sensing and computer vision for detection of water pans in agropastoral areas of Taita Taveta County in Kenya
Pauline T. Ogola, Ian A. Ocholla, Ilja Vuorinne, Mwadime Mjomba +3 more
2025International Journal of Remote Sensing1 citations Open access
Semantic Scholar
Livestock and water in developing countries
G. Gettel, Collins Muhadia, P. Ericksen
20191 citations
Semantic Scholar
Effects of Landscape Age and Nutrients on N-fixation and Primary Production in Arctic Lakes
G. Gettel, A. Giblin, R. Howarth
20051 citations
Semantic Scholar
Building a data-driven conceptual model of the hydrological functioning of the Taita Hills tropical water tower system in Kenya
Michel Frem, T. Stigter, B. V. van Breukelen, G. Gettel +2 more
2026Journal of Hydrology0 citations Open access
Semantic Scholar
Effects of liming and local sediment amendment on millet production and soil N2O emission in western Kenya
Eric Scherwietes, E. Wangari, R. Mwanake, G. Gettel +3 more
2026Plant and Soil0 citations Open access
Semantic Scholar
Nitrogen retention dynamics in a large floodplain river: a case study on the Padma River, Bangladesh
M. Gani, G. Gettel, J. van der Kwast, Kenneth A. Irvine +1 more
2025Ecohydrology & Hydrobiology0 citations Open access
Semantic Scholar
Identifying landscape hot and cold spots of soil GHG fluxes by 1 combining field measurements and remote sensing data 2
E. Wangari, R. Mwanake, T. Houska, David +5 more
20230 citations
Semantic Scholar
Anthropogenic activities significantly increase annual 1 greenhouse gas (GHG) fluxes from temperate headwater 2 streams in Germany 3
R. Mwanake, G. Gettel, E. Wangari, C. Glaser +4 more
20230 citations
Semantic Scholar

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