Concepedia

Emanuel L. Johnson

EL

Statistics

Publications

14

Citations

306

H-Index

12

Active since

1983

Affiliations

Agricultural Research Service(Current)

Beltsville Agricultural Research Center

United States Department of Agriculture

Emanuel L. Johnson is an author at Agricultural Research Service specializing in life sciences, plant sciences, and botany.

Publications per year

1983–2005

14

Publications

14

Alterations in the production and concentration of selected alkaloids as a function of rising atmospheric carbon dioxide and air temperature: implications for ethno‐pharmacology

Lewis H. Ziska, Stephen D. Emche, Emanuel L. Johnson et al. · Global Change Biology · 2005 · 48 citations

Life Sciences, Botany, Plant Sciences +14

Evaluation of a fiber optic immunosensor for quantitating cocaine in coca leaf extracts

Amr R. Toppozada, Jeremy Wright, Amira T. Eldefrawi et al. · Biosensors and Bioelectronics · 1997 · 29 citations

Pharmacy, Pharmaceutical Analysis, Toxicology +14

Identification of Erythroxylum taxa by AFLP DNA analysis

Emanuel L. Johnson, James A. Saunders, Sue Mischke et al. · Phytochemistry · 2003 · 27 citations

Life Sciences, Botany, Genetics +4

Investigation of ozone (O3) effects on 14C distribution in Ladino clover

Udo Blum, Edward Mrozek, Emanuel L. Johnson · Environmental and Experimental Botany · 1983 · 26 citations

Agriculture, Agronomy, Plant Sciences +10

Flavonoids as markers for Erythroxylum Taxa

Emanuel L. Johnson, Walter Schmidt, Helen Norman · Biochemical Systematics and Ecology · 1998 · 24 citations

Life Sciences, Botany, Plant Sciences +8

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