| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
7156
|
Stratiotes aloides
|
Environmental Water Quality
|
Anecdotal
|
N/A
|
Stratiotes aloides Has the potential to alter surrounding water chemistry, which may harm phytoplankton and other aquatic organisms.
|
|
29841
|
|
7157
|
Stratiotes aloides
|
Environmental Water Quality
|
Experimental
|
Laboratory
|
This study concluded that allelopathic substances are excreted by S. aloides. The negative effect may be amplified in natural environments due to other stresses such as shading and grazing.
|
|
29854
|
|
7158
|
Stratiotes aloides
|
Environmental Water Quality
|
Experimental
|
Laboratory
|
Mulderij et al. (2005) showed the effect of Stratiotes aloides on several phytoplankton species: two cyanobacterial strains (toxic and non-toxic Microcystis aeruginosa), one green alga (Scenedesmus obliquus) and one eustigmatophyte (Nannochloropsis limnetica). The overall effect (8-51%) was measured by the extension in doubling time of initial biovolume.
|
|
39929
|
|
7159
|
Stratiotes aloides
|
Environmental Water Quality
|
Observational
|
Field
|
Stratiotes aloides exerted a negative influence upon contiguous populations of phytoplankton in Sweden and in Poland. A considerable decline in planktonic chlorophyll was accompanied by decreases in electrolytic conductivity, carbonate alkalinity and contents of calcium, potassium and sodium. Competition for essential nutrients together with changes in the ionic composition of the water seem to be a likely explanation for the decline in phytoplankton.
|
Lake Ravalen, Sweden and Lake Warnolty, Poland
|
42137
|
|
7160
|
Stratiotes aloides
|
Environmental Water Quality
|
Anecdotal
|
N/A
|
Stratiotes aloides may impact water quality through inhibition of the enzyme alkaline phosphatase, which is associated with the growth of phytoplankton.
|
|
42138
|