Ecological Archives E088-041-A9

Donna Drury McCall and Chet F. Rakocinski. 2007. Grass shrimp (Palaemonetes spp.) play a pivotal trophic role in enhancing Ruppia maritima. Ecology 88:618–624.

Appendix I. Nutrient loading values for the three field experiments.

TABLE I1. Nutrient loading values (mmol//m2/d) for the Nutrient Addition treatment for each site (n = 6) and overall (n = 18) (mean ± 1 SE) for the three 28 d experiments. N – Nitrogen; P – Phosphorous. Values are consistent among sites and notably higher for Experiment 3.

 

Experiment 1

Experiment 2

Experiment 3

 

N

P

N

P

N

P

             

Site 1

283.69

277.97

264.39

259.06

354.58

347.43

 

± 9.84

± 9.64

± 9.68

± 9.48

± 20.26

± 19.85

             

Site 2

293.42

287.51

255.12

249.97

375.83

368.25

 

± 10.77

± 10.55

± 9.44

± 9.25

± 7.36

± 7.22

             

Site 3

241.20

236.34

272.90

267.40

396.58

388.58

 

± 19.25

± 18.87

± 11.23

± 11.00

± 9.42

± 9.23

             

Overall

272.77

267.27

230.52

225.88

375.66

368.09

 

± 9.35

± 9.16

± 5.78

± 5.66

± 8.46

± 8.29



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