Management of agricultural practices results in declines of filamentous algae in the lake littoral

Phosphorus fractionation in soil and sediments along a continuum from agricultural fields to nearshore lake sediments: Potential ecological impacts

“…The nearshore environment may retain the ability to supply both soluble forms of P to the water column, given the persistence of Fe-bound P in the sediment. Bosch et al (2009a) have observed a decrease in metaphyton growth coincident at Graywood Gully with decreased P flux to the lake. This suggests that while Fe-P may be solubilized from the sediment, its contribution alone to the water column is not sufficient to support metaphyton growth.…”

“…With BMP implementation in Graywood Gully, a significant decrease in nutrients and suspended solids delivered to the downstream system has occurred which has resulted in a decrease in metaphyton biomass (Bosch et al, 2009a) and bacteria ) and eventually a significant decrease in macrophyte biomass (Bosch et al, 2009b). The resultant decrease in rooted macrophytes may play a pivotal ecological role in the nearshore zone by accelerating the decrease in total macrophyte biomass.…”

Winter application of manure on an agricultural watershed and its impact on downstream nutrient fluxes

“…A comprehensive management plan should have a contingency for unforeseen circumstances, such as weather events, which may include short-to mid-term storage capabilities for manure (Edwards et al 1997) so that the farmer can avoid any deviations from the BMP. Lastly, BMP-induced reductions of seasonal P and N losses from various Conesus Lake sub-watersheds ) have led to significant reductions in metaphyton and macrophyte populations in the nearshore zone (Bosch et al 2009a(Bosch et al , 2009b and to a reduction in fecal indicators in streams coincident with the cessation of manure application ).…”

The influence of hydromorphological modifications of the littoral zone in lakes on macrophytes

“…Macroscopic, filamentous algae are an important group attached to degraded waters, both in the hydromorphological and trophic aspect (Ostendorp et al 2004, Bosch et al 2009). It probably resulted from the limited competition of vascular plants, as well as from the local increase in the concentration of biogenic substances in the water near beaches.…”