Register      Login
International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE (Open Access)

A laboratory-scale simulation framework for analysing wildfire hydrologic and water quality effects

Carli P. Brucker https://orcid.org/0000-0002-1094-6989 A B C * , Ben Livneh A B , Claire E. Butler D and Fernando L. Rosario-Ortiz A E
+ Author Affiliations
- Author Affiliations

A Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Discovery Drive, Boulder, CO 80309, USA.

B Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Discovery Drive, Boulder, CO 80309, USA.

C Carollo Engineers, 11030 Circle Point Road, Suite 400, Westminster, CO 80020, USA.

D Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520, USA.

E Environmental Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA.

* Correspondence to: carli.brucker@colorado.edu

International Journal of Wildland Fire 33, WF23050 https://doi.org/10.1071/WF23050
Submitted: 12 April 2023  Accepted: 23 November 2024  Published: 23 December 2024

© 2024 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of IAWF. This is an open access article distributed under the Creative Commons Attribution 4.0 International License (CC BY).

Abstract

Background

Wildfires can significantly impact water quality and supply. However logistical difficulties and high variability in in situ data collection have limited previous analyses.

Aims

We simulated wildfire and rainfall effects at varying terrain slopes in a controlled setting to isolate driver-response relationships.

Methods

Custom-designed laboratory-scale burn and rainfall simulators were applied to 154 soil samples, measuring subsequent runoff and constituent responses. Simulated conditions included low, moderate, and high burn intensities (~100–600°C); 10-, 200-, and 1000-year storm events (~14–51 mm/h); and 10–29° terrain slopes.

Key results

Simulators can control key drivers, with burn intensities highly correlated (R2 = 0.64) with heat treatment durations. Increasing burn intensity treatments generally saw significant (α = 0.05) increases in responses, with runoff and sedimentation increasing by ~30–70% with each intensity increment. Carbon and nitrogen peaked at moderate intensities (~250°C), however, with concentrations ~200–250% of unburned samples.

Conclusions

Distinct responses at each burn intensity indicate nuanced changes in soil physical and chemical composition with increased heating, exacerbating driving mechanisms of runoff and sedimentation while reducing carbon and nitrogen through volatilisation.

Implications

This work furthers our understanding of interactions between complex geographic features and the mosaic of burn intensities which exist in wildfire-affected landscapes.

Keywords: Colorado, experiment, Fraser Experimental Forest, hydrology, laboratory-scale, precipitation, simulation, water quality, water treatment, wildfire.

References

Abraham J, Dowling K, Florentine S (2017) Risk of post-fire metal mobilization into surface water resources: a review. Science of The Total Environment 599–600, 1740-1755.
| Crossref | Google Scholar | PubMed |

Alexander RR, Watkins RK (1977) ‘The Fraser Experimental Forest, Colorado.’ (Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station)

Alstatt D, Miles RL (1983) ‘Soil survey of Grand County area, Colorado.’ (The Service) Available at https://scholar.google.com/scholar_lookup?title=Soil+survey+of+Grand+County+area%2C+Colorado&author=Alstatt%2C+David&publication_year=1983

APHA (2012) ‘Standard methods for the examination of water and wastewater.’ 22nd edn. (Eds EW Rice, RB Baird, AD Eaton, LS Clesceri) (American Public Health Association, American Water Works Association, Water Environment Federation: Washington, DC, USA)

Badía-Villas D, González-Pérez JA, Aznar JM, Arjona-Gracia B, Martí-Dalmau C (2014) Changes in water repellency, aggregation and organic matter of a mollic horizon burned in laboratory: soil depth affected by fire. Geoderma 213, 400-407.
| Crossref | Google Scholar |

Balfour V, Woods S (2008) Causes of variability in the effects of vegetative ash on post-fire runoff and erosion. AGU Fall Meeting Abstracts 11, H11C-0778.
| Google Scholar |

Becker WC, Hohner A, Rosario‐Ortiz F, DeWolfe J (2018) Preparing for wildfires and extreme weather: plant design and operation recommendations. Journal: American Water Works Association 110, 32-40.
| Crossref | Google Scholar |

Bladon KD, Emelko MB, Silins U, Stone M (2014) Wildfire and the future of water supply. Environmental Science & Technology 48, 8936-8943.
| Crossref | Google Scholar | PubMed |

Blank RR, Allen F, Young JA (1994) Extractable anions in soils following wildfire in a sagebrush-grass community. Soil Science Society of America Journal 58, 564-570.
| Crossref | Google Scholar |

Bright CE, Mager SM (2020) A national-scale study of spatial variability in the relationship between turbidity and suspended sediment concentration and sediment properties. River Research and Applications 36, 1449-1459.
| Crossref | Google Scholar |

Brogan DJ, Nelson PA, MacDonald LH (2017) Reconstructing extreme post-wildfire floods: a comparison of convective and mesoscale events. Earth Surface Processes and Landforms 42, 2505-2522.
| Crossref | Google Scholar |

Brucker CP (2023) ‘Assessment of Basin Vulnerability to Post-Wildfire Hydrologic and Water Quality Effects Through a Multi-Scale Framework.’ (University of Colorado Boulder: Boulder, CO, USA) Available at https://scholar.colorado.edu/concern/graduate_thesis_or_dissertations/cv43nz221

Brucker CP, Livneh B, Minear JT, Rosario-Ortiz FL (2022) A review of simulation experiment techniques used to analyze wildfire effects on water quality and supply. Environmental Science: Processes & Impacts 24, 1110-1132.
| Crossref | Google Scholar | PubMed |

Brucker C, Livneh B, Butler C, Rosario-Ortiz F (2023) A laboratory-scale simulation framework for analyzing wildfire hydrologic and water quality effects. 10.5281/zenodo.7799976

Busse MD, Hubbert KR, Fiddler GO, Shestak CJ, Powers RF, Busse MD, Hubbert KR, Fiddler GO, Shestak CJ, Powers RF (2005) Lethal soil temperatures during burning of masticated forest residues. International Journal of Wildland Fire 14, 267-276.
| Crossref | Google Scholar |

Busse MD, Shestak CJ, Hubbert KR, Knapp EE (2010) Soil physical properties regulate lethal heating during burning of woody residues. Soil Science Society of America Journal 74, 947-955.
| Crossref | Google Scholar |

Cancelo-González J, Barros N, Rial-Rivas ME, Díaz-Fierros F (2012) Assessment of the impact of soil heating on soil cations using the degree-hours method. Spanish Journal of Soil Science 2, 32-41.
| Crossref | Google Scholar |

Cancelo-González J, Rial-Rivas ME, Díaz-Fierros F (2013) Effects of fire on cation content in water: a laboratory simulation study. International Journal of Wildland Fire 22, 667-680.
| Crossref | Google Scholar |

Cawley KM, Hohner AK, Podgorski DC, Cooper WT, Korak JA, Rosario-Ortiz FL (2017) Molecular and spectroscopic characterization of water extractable organic matter from thermally altered soils reveal insight into disinfection byproduct precursors. Environmental Science & Technology 51, 771-779.
| Crossref | Google Scholar | PubMed |

Chandler C, Cheney P, Thomas P, Trabaud L, Williams D (1983) ‘Fire in forestry. Vol. 1. Forest fire behavior and effects. Vol. 2. Forest fire management and organization.’ (John Wiley & Sons, Inc.: New York, NY, USA)

Cotrufo MF, Boot CM, Kampf S, Nelson PA, Brogan DJ, Covino T, Haddix ML, MacDonald LH, Rathburn S, Ryan‐Bukett S, Schmeer S, Hall E (2016) Redistribution of pyrogenic carbon from hillslopes to stream corridors following a large montane wildfire. Global Biogeochemical Cycles 30, 1348-1355.
| Crossref | Google Scholar |

Das BM, Sobhan K (2010) ‘Principles of geotechnical engineering.’ (CENGAGE Learning: Stamford, CT, USA)

Doerr SH, Shakesby RA, Blake WH, Chafer CJ, Humphreys GS, Wallbrink PJ (2006) Effects of differing wildfire severities on soil wettability and implications for hydrological response. Journal of Hydrology 319, 295-311.
| Crossref | Google Scholar |

Downing BD, Pellerin BA, Bergamaschi BA, Saraceno JF, Kraus TEC (2012) Seeing the light: the effects of particles, dissolved materials, and temperature on in situ measurements of DOM fluorescence in rivers and streams. Limnology and Oceanography: Methods 10, 767-775.
| Crossref | Google Scholar |

Ebel BA, Moody JA (2017) Synthesis of soil-hydraulic properties and infiltration timescales in wildfire-affected soils. Hydrological Processes 31, 324-340.
| Crossref | Google Scholar |

Ebel BA, Moody JA, Martin DA (2012) Hydrologic conditions controlling runoff generation immediately after wildfire. Water Resources Research 48, W03529.
| Crossref | Google Scholar |

Edenhofer O, Pichs-Madruga R, Sokona Y, et al.(2015) ‘Climate Change 2014: Mitigation of Climate Change.’ (Cambridge University Press)

Emmerich WE, Cox JR (1992) Hydrologic characteristics immediately after seasonal burning on introduced and native grasslands. Rangeland Ecology & Management/Journal of Range Management Archives 45, 476-479.
| Google Scholar |

Essery R, Rutter N, Pomeroy J, Baxter R, Stähli M, Gustafsson D, Barr A, Bartlett P, Elder K (2009) SNOWMIP2: an evaluation of forest snow process simulations. Bulletin of the American Meteorological Society 90, 1120-1136.
| Crossref | Google Scholar |

García-Gaines RA, Frankenstein S (2015) USCS and the USDA Soil Classification System: Development of a mapping scheme. Report. (Cold Regions Research and Engineering Laboratory (U.S.)) Available at https://erdc-library.erdc.dren.mil/jspui/handle/11681/5485

Hach Corporation (2014) ‘Hach 2100N User Manual.’ 5th edn. (Hach Corporation)

Hemenway J, USDA NRCS South Dakota (2017) Rainfall Simulator: How to Properly Collect and Store Large Soil Samples. Available at https://www.youtube.com/watch?v=f4zZvdEEUJQ&t=157s

Hester JW, Thurow TL, Taylor CA (1997) Hydrologic characteristics of vegetation types as affected by prescribed burning. Journal of Range Management 50, 199-204.
| Google Scholar |

Hogue BA, Inglett PW (2012) Nutrient release from combustion residues of two contrasting herbaceous vegetation types. Science of The Total Environment 431, 9-19.
| Crossref | Google Scholar | PubMed |

Hohner AK, Cawley K, Oropeza J, Summers RS, Rosario-Ortiz FL (2016) Drinking water treatment response following a Colorado wildfire. Water Research 105, 187-198.
| Crossref | Google Scholar | PubMed |

Hohner AK, Rhoades CC, Wilkerson P, Rosario-Ortiz FL (2019a) Wildfires alter forest watersheds and threaten drinking water quality. Accounts of Chemical Research 52, 1234-1244.
| Crossref | Google Scholar | PubMed |

Hohner AK, Summers RS, Rosario‐Ortiz FL (2019b) Laboratory simulation of postfire effects on conventional drinking water treatment and disinfection byproduct formation. AWWA Water Science 1, e1155.
| Crossref | Google Scholar |

Jian M, Berli M, Ghezzehei TA (2018) Soil structural degradation during low-severity burns. Geophysical Research Letters 45, 5553-5561.
| Crossref | Google Scholar |

Johansen MP, Hakonson TE, Breshears DD (2001) Post-fire runoff and erosion from rainfall simulation: contrasting forests with shrublands and grasslands. Hydrological Processes 15, 2953-2965.
| Crossref | Google Scholar |

Kampf SK, Brogan DJ, Schmeer S, MacDonald LH, Nelson PA (2016) How do geomorphic effects of rainfall vary with storm type and spatial scale in a post-fire landscape. Geomorphology 273, 39-51.
| Crossref | Google Scholar |

Keesstra SD, Maroulis J, Argaman E, Voogt A, Wittenberg L (2014) Effects of controlled fire on hydrology and erosion under simulated rainfall. Cuadernos de Investigación Geográfica 40, 269-294.
| Crossref | Google Scholar |

Kerr DE, Brown PJ, Grey A, Kelleher BP (2021) The influence of organic alkalinity on the carbonate system in coastal waters. Marine Chemistry 237, 104050.
| Crossref | Google Scholar |

Kibet LC, Saporito LS, Allen AL, May EB, Kleinman PJ, Hashem FM, Bryant RB (2014) A protocol for conducting rainfall simulation to study soil runoff. Journal of Visualized Experiments 86, e51664.
| Crossref | Google Scholar | PubMed |

Klopatek CC, Debano LF, Klopatek JM (1988) Effects of simulated fire on vesicular-arbuscular mycorrhizae in pinyon-juniper woodland soil. Plant and Soil 109, 245-249.
| Crossref | Google Scholar |

Knight RW, Blackburn WH, Scifres CJ (1983) Infiltration rates and sediment production following herbicide/fire brush treatments. Journal of Range Management 36, 154-157.
| Crossref | Google Scholar |

Kral KC, Limb RF, Hovick TJ, McGranahan DA, Field AL, O’Brien PL (2015) Simulating grassland prescribed fires using experimental approaches. Fire Ecology 11, 34-44.
| Crossref | Google Scholar |

Lane PNJ, Sheridan GJ, Noske PJ (2006) Changes in sediment loads and discharge from small mountain catchments following wildfire in south eastern Australia. Journal of Hydrology 331, 495-510.
| Crossref | Google Scholar |

Larsen IJ, MacDonald LH (2007) Predicting postfire sediment yields at the hillslope scale: testing RUSLE and Disturbed WEPP. Water Resources Research 43, W11412.
| Crossref | Google Scholar |

Larson-Nash SS, Robichaud PR, Pierson FB, Moffet CA, Williams CJ, Spaeth KE, Brown RE, Lewis SA (2018) Recovery of small-scale infiltration and erosion after wildfires. Journal of Hydrology and Hydromechanics 66, 261-270.
| Crossref | Google Scholar |

Lawrence RL (2020) ‘Addressing constraints to restoration of highly disturbed ecosystems affected by cheatgrass invasion and slash pile burning’. Text. (Colorado State University: CO, USA) Available at https://mountainscholar.org/handle/10217/232551

Marcos E, Tarrega R, Luis-Calabuig E (2000) Comparative analysis of Runo and sediment yield with a rainfall simulator after experimental fire. Arid Soil Research and Rehabilitation 14, 293-307.
| Crossref | Google Scholar |

Marlon JR, Bartlein PJ, Walsh MK, Harrison SP, Brown KJ, Edwards ME, Higuera PE, Power MJ, Anderson RS, Briles C, Brunelle A, Carcaillet C, Daniels M, Hu FS, Lavoie M, Long C, Minckley T, Richard PJ, Scott AC, Shafer DS, Tinner W, Umbanhowar CE, Jr, Whitlock C (2009) Wildfire responses to abrupt climate change in North America. Proceedings of the National Academy of Sciences 106, 2519-2524.
| Crossref | Google Scholar | PubMed |

Moody JA, Martin DA (2001a) Post-fire, rainfall intensity–peak discharge relations for three mountainous watersheds in the western USA. Hydrological Processes 15, 2981-2993.
| Crossref | Google Scholar |

Moody JA, Martin DA (2001b) Initial hydrologic and geomorphic response following a wildfire in the Colorado Front Range. Earth Surface Processes and Landforms 26, 1049-1070.
| Crossref | Google Scholar |

Moody JA, Martin DA (2009a) Synthesis of sediment yields after wildland fire in different rainfall regimes in the western United States. International Journal of Wildland Fire 18, 96-115.
| Crossref | Google Scholar |

Moody JA, Martin DA (2009b) Synthesis of sediment yields after wildland fire in different rainfall regimes in the western United States. International Journal of Wildland Fire 18, 96-115.
| Crossref | Google Scholar |

Murphy SF, Writer JH, McCleskey RB, Martin DA (2015) The role of precipitation type, intensity, and spatial distribution in source water quality after wildfire. Environmental Research Letters 10, 084007.
| Crossref | Google Scholar |

Neary DG, Ryan KC, DeBano LF (2005) ‘Wildland fire in ecosystems: effects of fire on soils and water’. RMRS-GTR-42-V4. (U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: Ft. Collins, CO) 10.2737/RMRS-GTR-42-V4

O’Dell JW (1993) ‘Method 180.1: Determination of turbidity by nephelometry’. p. 8. (Environmental Monitoring Systems Laboratory Office of Research and Development, US Environmental Protection Agency: Cincinnati, OH)

Park RM (2010) Thermocouple fundamentals. Course Tech, Temp 2–1. (Marlin Manufacturing Corporation) Available at https://www.aschome.com/administrator/images/support/pdf/1347065903.pdf

Precipitation Frequency Data Server (2017) NOAA’s National Weather Service Hydrometeorological Design Studies Center. Available at https://hdsc.nws.noaa.gov/hdsc/pfds/

Raseman WJ, Kasprzyk JR, Rosario-Ortiz FL, Stewart JR, Livneh B (2017) Emerging investigators series: a critical review of decision support systems for water treatment: making the case for incorporating climate change and climate extremes. Environmental Science: Water Research & Technology 3, 18-36.
| Crossref | Google Scholar |

Reardon J, Hungerford R, Ryan K (2007) Factors affecting sustained smouldering in organic soils from pocosin and pond pine woodland wetlands. International Journal of Wildland Fire 16, 107-118.
| Crossref | Google Scholar |

Rhoades CC, Entwistle D, Butler D (2011) The influence of wildfire extent and severity on streamwater chemistry, sediment and temperature following the Hayman Fire, Colorado. International Journal of Wildland Fire 20, 430-442.
| Crossref | Google Scholar |

Rhoades CC, Hubbard RM, Elder K (2017) A decade of streamwater nitrogen and forest dynamics after a mountain pine beetle outbreak at the Fraser Experimental Forest, Colorado. Ecosystems 20, 380-392.
| Crossref | Google Scholar |

Rhoades CC, Chow AT, Covino TP, Fegel TS, Pierson DN, Rhea AE (2019a) The legacy of a severe wildfire on stream nitrogen and carbon in headwater catchments. Ecosystems 22, 643-657.
| Crossref | Google Scholar |

Rhoades CC, Nunes JP, Silins U, Doerr SH, Rhoades CC, Nunes JP, Silins U, Doerr SH (2019b) The influence of wildfire on water quality and watershed processes: new insights and remaining challenges. International Journal of Wildland Fire 28, 721-725.
| Crossref | Google Scholar |

Robichaud PR (2005) Measurement of post-fire hillslope erosion to evaluate and model rehabilitation treatment effectiveness and recovery. International Journal of Wildland Fire 14, 475-485.
| Crossref | Google Scholar |

Robichaud PR, Hungerford RD (2000) Water repellency by laboratory burning of four northern Rocky Mountain forest soils. Journal of Hydrology 231–232, 207-219.
| Crossref | Google Scholar |

Robichaud PR, Waldrop TA (1994) A comparison of surface runoff and sediment yields from low- and high-severity site preparation burns. JAWRA Journal of the American Water Resources Association 30, 27-34.
| Crossref | Google Scholar |

Robichaud PR, Wagenbrenner JW, Pierson FB, Spaeth KE, Ashmun LE, Moffet CA (2016) Infiltration and interrill erosion rates after a wildfire in western Montana, USA. CATENA 142, 77-88.
| Crossref | Google Scholar |

Roundy BA, Blackburn WH, Eckert RE (1978) Influence of prescribed burning on infiltration and sediment production in the Pinyon-Juniper Woodland, Nevada. Journal of Range Management 31, 250-253.
| Google Scholar |

Rust AJ, Hogue TS, Saxe S, McCray J, Rust AJ, Hogue TS, Saxe S, McCray J (2018) Post-fire water-quality response in the western United States. International Journal of Wildland Fire 27, 203-216.
| Crossref | Google Scholar |

Shahlaee AK, Nutter WL, Burroughs ER, Morris LA (1991) Runoff and sediment production from burned forest sites in the Georgia Piedmont. JAWRA Journal of the American Water Resources Association 27, 485-493.
| Crossref | Google Scholar |

Shimadzu Corporation (2001) TOC-Vcsh/csn Total Organic Carbon User Manual. (Shimadzu Corporation, Japan)

Smith HG, Sheridan GJ, Lane PNJ, Nyman P, Haydon S (2011) Wildfire effects on water quality in forest catchments: a review with implications for water supply. Journal of Hydrology 396, 170-192.
| Crossref | Google Scholar |

Sommerfeld A, Senf C, Buma B, D’Amato AW, Després T, Díaz-Hormazábal I, Fraver S, Frelich LE, Gutiérrez ÁG, Hart SJ, Harvey BJ, He HS, Hlásny T, Holz A, Kitzberger T, Kulakowski D, Lindenmayer D, Mori AS, Müller J, Paritsis J, Perry GLW, Stephens SL, Svoboda M, Turner MG, Veblen TT, Seidl R (2018) Patterns and drivers of recent disturbances across the temperate forest biome. Nature Communications 9, 4355.
| Crossref | Google Scholar | PubMed |

Spencer CN, Gabel KO, Hauer FR (2003) Wildfire effects on stream food webs and nutrient dynamics in Glacier National Park, USA. Forest Ecology and Management 178, 141-153.
| Crossref | Google Scholar |

Spracklen DV, Mickley LJ, Logan JA, Hudman RC, Yevich R, Flannigan MD, Westerling AL (2009) Impacts of climate change from 2000 to 2050 on wildfire activity and carbonaceous aerosol concentrations in the western United States. Journal of Geophysical Research: Atmospheres 114, D20301.
| Crossref | Google Scholar |

Staley DM, Kean JW (2020) Emergency Assessment of Post-Fire Debris-Flow Hazards. USGS Landslide Hazards Program Williams Fork (Arapaho and Roosevelt National Forests, CO) Available at https://landslides.usgs.gov/hazards/postfire_debrisflow/detail.php?objectid=298

Stavi I (2019) Wildfires in grasslands and shrublands: a review of impacts on vegetation, soil, hydrology, and geomorphology. Water 11, 1042.
| Crossref | Google Scholar |

Stoof CR, Wesseling JG, Ritsema CJ (2010) Effects of fire and ash on soil water retention. Geoderma 159, 276-285.
| Crossref | Google Scholar |

Stoof CR, De Kort A, Bishop TFA, Moore D, Wesseling JG, Ritsema CJ (2011) How rock fragments and moisture affect soil temperatures during fire. Soil Science Society of America Journal 75, 1133-1143.
| Crossref | Google Scholar |

Tossell R, Dickinson W, Rudra R, Wall G (1987) A portable rainfall simulator. Canadian Agricultural Engineering 29, 155-162.
| Google Scholar |

Ulbrich CW (1983) Natural variations in the analytical form of the raindrop size distribution. Journal of Applied Meteorology and Climatology 22, 1764-1775.
| Crossref | Google Scholar |

Wang J-J, Dahlgren RA, Erşan MS, Karanfil T, Chow AT (2015) Wildfire altering terrestrial precursors of disinfection byproducts in forest detritus. Environmental Science & Technology 49, 5921-5929.
| Crossref | Google Scholar | PubMed |

Wei H, Thompson R, Park C, Chen P (2010) Surface tension of high density polyethylene (HDPE) in supercritical nitrogen: effect of polymer crystallization. Colloids and Surfaces A: Physicochemical and Engineering Aspects 354, 347-352.
| Crossref | Google Scholar |

Wieting C, Ebel BA, Singha K (2017) Quantifying the effects of wildfire on changes in soil properties by surface burning of soils from the Boulder Creek Critical Zone Observatory. Journal of Hydrology: Regional Studies 13, 43-57.
| Crossref | Google Scholar |

Wilkerson PJ, Rosario‐Ortiz FL (2021) Impact of simulated wildfire on disinfection byproduct formation potential. AWWA Water Science 3, e1217.
| Crossref | Google Scholar |

Writer JH, Hohner A, Oropeza J, Schmidt A, Cawley KM, Rosario-Ortiz FL (2014) Water treatment implications after the High Park Wildfire, Colorado. Journal - American Water Works Association 106, E189-E199.
| Crossref | Google Scholar |

Yonter G, Houndonougbo HM (2022) Comparison of different fulljet nozzles used in laboratory type rain simulator in terms of some rainfall characteristics. Ege Üniversitesi Ziraat Fakültesi Dergisi 59, 33-41.
| Crossref | Google Scholar |