american samoa - University of Hawaii at Manoa Botany Department

More specific monitoring of stream fauna should be made along lower Leafu Streamapproximately 400-500 feet upstream of the Leafu Stream mouth. Such monitoring shouldinclude the collection of driftnet samples of outgoing larvae, at least two times per month, for3-4 hour evening periods. The driftnets (150-200 ųm mesh) should be attached to rebarpounded into the stream substrata, or simply suspended from trees or bridges to that the net is atthe surface of the water. The samples would subsequently be preserved in ethanol. The typeand number of fish and crustaceans should be enumerated using a dissecting microscope. Useof the dissecting microscope will likely require a 2-3 day training class and the necessaryequipment.Molluscs should be monitored by mark-recapture methodology, or quadrant counts at nightsince most are primarily nocturnal. Some training in these techniques is recommended.Site MaintenancePeriodic site maintenance should take place along the 300-foot stream segment approximatelyfour times per year. Household and agricultural wastes along the 300-foot segment of LeafuStream are expected to represent the primary focus of long-term site maintenance.A crew of three persons will be necessary to periodically collect and remove discarded solidwaste material from the 300-foot segment of Leafu Stream. Periodic cleanups would occurshortly after significant rainfall and stormwater events. Machetes and weed-eaters will berequired to periodically trim vegetation along selected portions of the stream channel.American Samoa Wetlands/Streams Restoration and Enhancement PlanFebruary 2001, Leafu Stream, Page 9-20