|
Impact ID |
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Impact Description
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2946
|
Hydrilla verticillata
|
Recreation
|
Observational
|
N/A
|
A survey of local anglers’ willingness to pay for Hydrilla verticillata controls are one...
|
5148
|
2950
|
Hydrilla verticillata
|
Habitat Alteration
|
Observational
|
Field
|
Presence of small amounts of Hydrilla verticillata may increase food and habitat for...
|
5137
|
2951
|
Hydrilla verticillata
|
Infrastructure
|
Observational
|
Field
|
Large amounts of Hydrilla verticillata prevent adequate drainage of canals.
|
5101
|
2952
|
Hydrilla verticillata
|
Navigation
|
Observational
|
Field
|
Hydrilla verticillata clogs canals preventing boater access.
|
5101
|
2956
|
Hydrilla verticillata
|
Infrastructure
|
Experimental
|
Field
|
Water exchange rates are lowered in Hydrilla verticillata-infested tidal canals.
|
10124
|
2957
|
Hydrilla verticillata
|
Water Quality
|
Experimental
|
Field
|
Water exchange rates are lowered in Hydrilla verticillata-infested tidal canals.
|
10124
|
2966
|
Hydrilla verticillata
|
Habitat Alteration
|
Observational
|
Field
|
Brown Hoplos in Florida construct bubble nests using the invasive plant Hydrilla...
|
14164
|
2978
|
Hydrilla verticillata
|
Competition
|
Anecdotal
|
Field
|
Hydrilla verticillata grows faster than native plants in the Potomac River/Chesapeake Bay...
|
10138
|
2979
|
Hydrilla verticillata
|
Recreation
|
Experimental
|
Field
|
Mean total replacement value per hectare of vegetated area was $59,738 for hydrilla for estimating...
|
10239
|
2981
|
Hydrilla verticillata
|
Other
|
Observational
|
Field
|
North Carolina Division of Water resources estimates that chemical control of hydrilla in one lake...
|
10435
|
2982
|
Hydrilla verticillata
|
Other
|
Observational
|
Field
|
Delaware spends approximately $55,000 to control hydrilla (1995).
|
10435
|
3015
|
Hydrilla verticillata
|
Food Web
|
Observational
|
Field
|
Hydrilla can cause shifts in the feeding habits of all waterfowl species.
|
10710
|
3037
|
Hydrilla verticillata
|
Recreation
|
Observational
|
Field
|
Hydrilla restricts boat access and impedes other recreational activities such as angler access and...
|
31435
|
3061
|
Hydrilla verticillata
|
Recreation
|
Anecdotal
|
N/A
|
Hydrilla can interfere with swimming and boating by anglers and waterskiers in recreational waters.
|
33831
|
3062
|
Hydrilla verticillata
|
Commerce
|
Anecdotal
|
N/A
|
Hydrilla can severely interfere with navigation of both recreational and commercial craft
|
33831
|
3063
|
Hydrilla verticillata
|
Habitat Alteration
|
Anecdotal
|
N/A
|
Hydrilla displaces native vegetation communities, and can adversely impact sportfish populations
|
33831
|
3064
|
Hydrilla verticillata
|
Other
|
Observational
|
Field
|
Economic study on Orange Lake in North Central Florida indicated that the economic activity...
|
33833
|
3065
|
Hydrilla verticillata
|
Harvest
|
Experimental
|
Field
|
Harvestable (creel-able) largemouth bass had low condition values once hydrilla coverage was above...
|
10511
|
3066
|
Hydrilla verticillata
|
Property Value
|
Anecdotal
|
N/A
|
Highly transparent water is often considered desirable by the public, and large populations of...
|
33831
|
3071
|
Hydrilla verticillata
|
Competition
|
Observational
|
Field
|
Hydrilla impacted four lakes in New Zealand, forming dense mono-specific stands that have displaced...
|
33834
|
3074
|
Hydrilla verticillata
|
Infrastructure
|
Anecdotal
|
N/A
|
Hydrilla forms dense mats at the water surface, impeding water flow.
|
33836
|
3075
|
Hydrilla verticillata
|
Recreation
|
Observational
|
Field
|
Hydrilla has affected tourism and navigation in Guatemala.
|
33837
|
3076
|
Hydrilla verticillata
|
Infrastructure
|
Observational
|
Field
|
Hydrilla has affected tourism and navigation in Guatemala.
|
33837
|
3077
|
Hydrilla verticillata
|
Competition
|
Anecdotal
|
Field
|
Hydrilla are considered to cause the loss of native species through competition and displacement.
|
33837
|
3079
|
Hydrilla verticillata
|
Habitat Alteration
|
Observational
|
Field
|
Large amounts of hydrilla lower sediment resuspension
|
33837
|
|