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- Lesica, Peter
- Ecological applications 1992 v.2 no.4 pp. 411-421
- Howellia aquatilis; aeration; aquatic plants; drawdown; extinction; germination; habitat conservation; habitats; life history; mineral soils; organic soils; peat; photoperiod; planning; ponds; population size; rare species; regression analysis; risk; seed dispersal; seeds; spring; temperature; vigor; water quality; wetlands; Montana; Pacific States
- ... Howellia aquatilis is an annual aquatic plant of ephemeral ponds. It is considered extirpated or endangered throughout its range in the United States Pacific Northwest. I studied populations in the Swan Valley of Montana to determine life history traits and ecological attributed in order to influence planning decisions on lands managed for multiple use. Germination trials demonstrated that seeds o ...