Record Details
page 3-48
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 3-48 Phase II summary report (final) : Utah Lake water quality, hydrology and aquatic biology impact analysis summary for the irrigation and drainage system--Bonneville Unit, Central Utah Project, page 3-48 |
| Coverage | Electronic reproduction; |
| Format | 3-48 text/PDF |
| Rights | Brigham Young University; http://lib.byu.edu/about/copyright/generic.php Public Domain Public |
| Language | English; eng; en |
| Relation | Central Utah Project; Western Waters Digital Library; C PROBABLE COMMUNITY CHANGES FOLLOWING DIKING it is always difficult to predict under any circumstances future changes in an extant ecosystem this is even the case when no unnatural perturbations are placed upon the system the reasons are manifold since the number of biotic and abiotic factors and their interactions involved in structuring any ecosystem are enormous As an example of this during most years in utah lake the predominant bluegreen blue green phytoplankton species is aphanizomenon aphani aghani zomenon flos aglae aouae aguae this organism usually forms very large blooms in the lake during late summer however for reasons still not well understood during some summers the phytoplankton species anabaena spiroides spi roides var crassa develops as the dominant algal species and excludes or greatly diminishes the numbers of aphanizomenon aphani aghani zomenon menon zo this is a problem since anabaena produces an extracellular polysaccharide poly saccharide that interferes with industrial processes used by some utah lake water users in addition to these types of changes a lake also undergoes directional changes by aging eutrophication through time the lake may begin to show permanent changes toward decreased biotic diversity an increased sedimentation rate changes in the major sediment type increased turbidity TDS etc under some circumstances such changes may occur rapidly with these natural fluctuations and trends in mind it is even more difficult to predict the outcome of large scale perturbations such as diking on any ecosystem in some cases what appear to be rather large scale changes in a system may be accommodated with little perceptable perceptible percept able outward change on the other hand sometimes seemingly small changes in a physical or biotic factor will drastically alter an ecosystem the predictions given in this report are best possible estimates they are not certainties but are used on over a decade of utah lake study including phase I 1 studies and are the most probable As paine 1981 said in his ecological society of america presidential 3 48 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/9424 |
