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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 ...
- Chen, Jiquan; Franklin, Jerry F.; Spies, Thomas A.
- Ecological applications 1992 v.2 no.4 pp. 387-396
- Abies alba; Abies amabilis; Pseudotsuga menziesii; Tsuga heterophylla; analysis of variance; basal area; canopy; clearcutting; conifers; edge effects; habitats; landscapes; mortality; old-growth forests; regression analysis; resource management; saplings; seedlings; snags; stems; stocking rate; tree mortality; Oregon; Washington (state)
- ... Forest edges created by dispersed—patch clear—cutting have become a conspicuous landscape feature in western North America, but the effects of edge on forest structure and function are still poorly understood. In this paper we describe responses of stocking density, growth, mortality, and regeneration for three conifer species from the clear—cut edge into the interior of old—growth forest patches ...