Figure 4. The recently funded NPARS (Nitrate Processing And Retention in Streams) project continues the use of 15N to study nitrogen in streams. (H.M. Valett, J.R. Webster, P.J. Mulholland, S.A. Thomas, C.N. Dahm, C.G. Peterson)

Figure 4. The recently funded NPARS

Figure 4. The recently funded NPARS (Nitrate Processing And Retention in Streams) project continues the use of 15N to study nitrogen in streams. (H.M. Valett, J.R. Webster, P.J. Mulholland, S.A. Thomas, C.N. Dahm, C.G. Peterson)

From: 
An Example to Follow: Intersite Research among Stream Ecologists at LTER sites