Ecological Archives M075-019-A4

Jeremy M. Wojdak. 2005. Relative strength of top-down, bottom-up, and consumer species richness effects on pond ecosystems. Ecological Monographs 75:489–504.

Appendix D. The occurrence of five snail species in a survey of 16 ponds in southwest Michigan.

Pond
Snail Species
Snail Species
Richness
Fo
Gp
Ht
Pc
Pg
PL2
0
0
0
0
0
0
LA16
0
0
0
0
0
0
PL11
0
1
0
0
0
1
PL17
1
0
0
0
0
1
LA26a
0
1
0
1
0
2
LA26b
0
1
1
0
0
2
PL8
1
1
0
0
0
2
LA8
0
1
1
0
1
3
PL16
1
1
1
0
0
3
LA5
0
1
1
0
1
3
LA7
0
1
1
0
1
3
LA18
0
1
1
0
1
3
LA30
0
1
1
0
1
3
LA9
0
0
1
1
1
3
PL10
1
0
1
0
1
3
PL4
1
1
1
0
1
4

   Notes: 1 = present, 0 = absent. Snail species are labeled with the first letter of each the species and genus names: Fossaria obrussa = Fo, Gyraulus parvus = Gp, Helisoma trivolvis = Ht, Pseudosuccinea columella = Pc, and Physa gyrina = Pg.  Ponds are labeled with the initials of their location and a designating number commonly used by investigators at the Kellogg Biological Station: PL = KBS experimental pond laboratory, LA = Lux Arbor Reserve pond.  Ponds were sampled on 5 Sep 2003, with repeated sweep nets in the littoral vegetation, until 5 consecutive sweeps produced no new species of snails.



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