Laura Lynn Keefer

Fluvial Geomorphologist

19972018
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Research Output 1997 2018

  • 9 Article
  • 6 Conference contribution
2018

Critical transition in critical zone of intensively managed landscapes

Kumar, P., Le, P. V. V., Papanicolaou, A. N. T., Rhoads, B. L., Anders, A. M., Stumpf, A. J., Wilson, C. G., Bettis, E. A., Blair, N., Ward, A. S., Filley, T., Lin, H., Keefer, L. L., Keefer, D. A., Lin, Y-F., Muste, M., Royer, T. V., Foufoula-Georgiou, E. & Belmont, P., Jun 1 2018, In : Anthropocene. 22, p. 10-19 10 p.

Research output: Contribution to journalArticle

agricultural practice
arable land
machinery
eutrophication
soil water

The C-biogeochemistry of a Midwestern USA agricultural impoundment in context: Lake Decatur in the intensively managed landscape critical zone observatory

Blair, N. E., Leithold, E. L., Thanos Papanicolaou, A. N., Wilson, C. G., Keefer, L. L., Kirton, E., Vinson, D., Schnoebelen, D., Rhoads, B. L., Yu, M. & Lewis, Q., Apr 1 2018, In : Biogeochemistry. 138, 2, p. 171-195 25 p.

Research output: Contribution to journalArticle

Biogeochemistry
Observatories
biogeochemistry
impoundment
Methane

The intensively managed landscape critical zone observatory: A scientific testbed for understanding critical zone processes in agroecosystems

Wilson, C. G., Abban, B., Keefer, L. L., Wacha, K., Dermisis, D., Giannopoulos, C., Zhou, S., Goodwell, A. E., Woo, D. K., Yan, Q., Ghadiri, M., Stumpf, A. J., Pitcel, M., Lin, Y-F., Marini, L., Storsved, B., Goff, K., Vogelgsang, J., Dere, A., Schilling, K. E. & 13 others, Muste, M., Blair, N. E., Rhoads, B. L., Bettis, A., Pai, H., Kratt, C., Sladek, C., Wing, M., Selker, J., Tyler, S., Lin, H., Kumar, P. & Papanicolaou, A. N., Jan 1 2018, In : Vadose Zone Journal. 17, 1, 180088.

Research output: Contribution to journalArticle

Open Access
agricultural ecosystem
agroecosystems
observatory
sediments
sediment
2017

Microbial diversity in an intensively managed landscape is structured by landscape connectivity

Griffin, J. S., Lu, N., Sangwan, N., Li, A., Dsouza, M., Stumpf, A. J., Sevilla, T., Culotti, A., Keefer, L. L., Kelly, J. J., Gilbert, J. A., Wells, G. F. & Packman, A. I., Oct 1 2017, In : FEMS microbiology ecology. 93, 10, fix120.

Research output: Contribution to journalArticle

connectivity
microbial community
Soil
Water
watershed
2016
management practice
best management practice
watershed
water quality
nonpoint source pollution
2012

The microelectronic wireless nitrate sensor network for environmental water monitoring

Gartia, M. R., Braunschweig, B., Chang, T. W., Moinzadeh, P., Minsker, B. S., Agha, G. A., Wieckowski, A., Keefer, L. L. & Liu, G. L., Dec 1 2012, In : Journal of Environmental Monitoring. 14, 12, p. 3068-3075 8 p.

Research output: Contribution to journalArticle

Environmental Monitoring
Microelectronics
Nitrates
Sensor networks
nitrate
2009

Modeling the hydrology and hydraulics of the cache river system

Demissie, M., Keefer, L. L., Lian, Y., Yue, F. & Bekele, E., 2009, Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers. Vol. 342. p. 6010-6019 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

river system
hydrology
hydraulics
river
modeling
2008

Illinois river CREP: Sediment and nutrient delivery assessment

Demissie, M., Slowikowski, J., Keefer, L. L. & Stevenson, K., 2008, World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008. Vol. 316.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nutrients
Conservation
Sediments
Rivers
nutrient
2007

Effective discharge computations for an intensively monitored Illinois stream

Crowder, D. W. & Keefer, L. L., Dec 1 2007, Restoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress. (Restoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

recurrence interval
Watersheds
watershed
method

The importance of managing sedimentation in the Cache River Wetlands

Demissie, M., Keefer, L. L., Lian, Y. & Yue, F., 2007, Restoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wetlands
Sedimentation
Rivers
wetland
sedimentation
2006

Evaluating the effectiveness of the Illinois River Conservation Reserve Enhancement Program in reducing sediment delivery

Demissie, M., Keefer, L. L., Slowikowski, J. A. & Stevenson, K., Sep 13 2006, In : IAHS-AISH Publication. 306, p. 295-303 9 p.

Research output: Contribution to journalArticle

river
sediment
sedimentation
baseline conditions
programme
2005

Rapid stream assessments of the Illinois River watershed

White, W. P. & Keefer, L. L., Dec 1 2005, World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress. 1 p. (World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

watershed
river
ecosystem
tributary
river basin
2002

AGNPS-based assessment of the impact of BMPs on nitrate-nitrogen discharging into an Illinois water supply lake

Borah, D. K., Demissie, M. & Keefer, L. L., Jan 1 2002, In : Water International. 27, 2, p. 255-265 11 p.

Research output: Contribution to journalArticle

nonpoint source pollution
water supply
nitrate
nitrogen
lake
1998

Watershed approach for the protection of drinking water supplies in central illinois

Demissie, M. & Keefer, L. L., Jan 1 1998, In : Water International. 23, 4, p. 272-277 6 p.

Research output: Contribution to journalArticle

watershed
water quality
drinking water
nitrate
agricultural practice
1997

Sources of nitrate contamination in Central Illinois streams and lakes

Demissie, M., Asce, M., Keefer, L. L., Shaw, S. & Nichols, K., Jan 1 1997, Environmental and Coastal Hydraulics: Protecting the Aquatic Habitat. ASCE, Vol. B pt 1. p. 113-118 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lakes
Nitrates
Contamination
Watersheds
Water supply