The effects on the plankton community of filter-feeding Sacramento blackfish,Orthodon microlepidotus |
| |
Authors: | Stephanie Byers Gary L Vinyard |
| |
Institution: | (1) Department of Biology, University of Nevada-Reno, 89557 Reno, NV, USA |
| |
Abstract: | Summary A series of mesocosm experiments was performed to assess the effects on the plankton community of filter-feeding Sacramento blackfish (Cyprinidae; Orthodon microlepidotus). Phytoplankton size-frequency distribution, zooplankton abundance, primary production, potential secondary production, and nutrient concentrations were measured. Blackfish reduce numbers of both evasive and nonevasive zooplankton and large phytoplankton while enhancing nanoplankton densities. Blackfish also significantly increase primary production and potential secondary community production. Levels of dissolved inorganic phosphorus and ammonia-nitrogen also increase. The effects of blackfish are generally similar to those reported for other filter-feeding fish. |
| |
Keywords: | Community Filter-feeding Fish Planktivory |
本文献已被 SpringerLink 等数据库收录! |
|