Title

The dynamics of cladoceran assemblages in response to eutrophication and planktivorous fish introduction in Lake Chenhai, a plateau saline lake.

SelectedWorks Author Profiles:

Joseph M. Smoak

Document Type

Article

Publication Date

2015

Date Issued

January 2015

Date Available

December 2014

ISSN

1040-6182

Abstract

Lake Chenghai, a brackish lake located in southwest China, has changed from oligotrophic to mesotrophic and finally eutrophic conditions since the 1990s. In the late 1990s, planktivorous icefish were introduced into the lake, which dramatically altered the fish population. A paleolimnological evaluation using the cladoceran remains was conducted in order to analyze the effects of increasing nutrient load and fish introduction on the cladoceran community of this lake. Our results showed that the dominant cladocerans were littoral species, with a low abundance of planktonic Bosmina in the sediment. Increasing eutrophication since the late 1990s greatly enhanced the abundance of cladoceran assemblages, especially for the species that prefer eutrophic conditions. Meanwhile, the species which prefer oligotrophic conditions were extirpated. The changes in Daphnia ephippium length suggested that the planktivorous icefish have varying effects on the body size of different species.

Comments

Abstract only. Full-text article is available through licensed access provided by the publisher. Published in Quaternary International, 355, 188-193. DOI: 10.1016/j.quaint.2014.07.029 Members of the USF System may access the full-text of the article through the authenticated link provided.

Language

en_US

Publisher

Pergamon Press

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.