作者: Steven N. Francoeur , Robert W. Pillsbury , Rex L. Lowe
DOI: 10.1080/02705060.2014.1001452
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摘要: Benthic algal communities in the Laurentian Great Lakes (USA and Canada) have been strongly affected by invasion of dreissenid mussels. Early (1990–1995) studies Saginaw Bay, Lake Huron, demonstrated a shift from light to nutrient (phosphorus, P) limitation benthic algae, large changes community composition once zebra mussels (Dreissena polymorpha) became established. We conducted sampling enrichment experiment at historic site quantify algae under current environmental conditions compare results with historical data. P-demand was apparently saturated immediately post-invasion, but subsequent years, growth on artificial substrata consistently P-limited (p always <0.005), perhaps as result declining mussel abundance. Epilithic displayed interannual changes, response mussel-induced alteration availability natural...