Abstract:
:The effects of pollination, predispersal seed predation, and plant density upon seed production of Astragalus canadensis L. in a tall-grass prairie were studied by experimental manipulation of plant density. Seed production was greater at high than low plant densities; this was inferred to result from differences in pollination success. Predispersal seed predation was lower at high than low plant densities. The relative seed production of different densities of A. canadensis was predicted based upon pollination success and the host detection ability of the predator. Increased seed production and modification of the environment by high densities of A. canadensis appears to maintain a clumped distribution of this species, while also producing new clumps at a low rate.
journal_name
Oecologiajournal_title
Oecologiaauthors
Platt WJ,Hill GR,Clark Sdoi
10.1007/BF00345095subject
Has Abstractpub_date
1974-03-01 00:00:00pages
55-63issue
1eissn
0029-8549issn
1432-1939pii
10.1007/BF00345095journal_volume
17pub_type
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