Niche Extension of Aquatic Macrophytes in Hydrolakes: Predictive Assessment of Environmental Impacts
✍ Scribed by Dr. Bjørn Rørslett
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 938 KB
- Volume
- 73
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
✦ Synopsis
A statistical model for the survival (potential) niche size of submerged macrophytes is related t o fluctuating water levels. Designated as the spatial survival niche model (SSN), this model describes the potential niche by means of a product of sputio-temporal mortality functions. The SSN model enables quantitative estimiitcs of the niche's width, central location, and percentile points.
The model is corroborated by an extensive Isoetes Zucustris L. data set from 17 Norwegian lakes, which included hydro-electric lakes (hydrolakcs) a s well as non-impacted lakes. The close fit between model prediction and the macrophyte's actunl spatial perfornianre is remarkiible and encouraging from an impact assessment point of view.