Abstract
AbstractEmpirical assessments of the influence of invasive species on native species are infrequent because the required long-term data are rarely available. The invasion of silver carp in the Upper Mississippi River System (UMRS) provides a unique opportunity to assess the influence of this invasive species on native fishes because a highly standardized, long-term monitoring program has been sampling the fish communities in six reaches of the UMRS for over 20 years. We analyzed fish abundance (catch per unit effort from electrofishing) and water-quality data collected from 1994 to 2013 from three reaches where silver carp populations have been established since 2000, and three reaches where they are not established. Our results provide empirical evidence of a negative effect of invasive silver carp on native sport fish in the UMRS. Although water temperature, suspended solid concentration, and flooding also differed substantially between control and invaded reaches, only silver carp abundance had a direct negative relationship with the abundance of adult sport fish. Our analyses suggest that the mechanism for this decline may be competition for zooplankton between silver carp and larval/juvenile sport fish. In reaches where silver carp is established, recruitment of juvenile sport fish appears to be constrained relative to reaches where silver carp is not established.
Funder
U.S. Army Corps of Engineers
U.S. Geological Survey
Publisher
Springer Science and Business Media LLC
Subject
Ecology,Ecology, Evolution, Behavior and Systematics
Reference67 articles.
1. Anderson RO, Neumann RM (1996) Length, weight, and associated structural indices. In: Murphy BR, Willis DW (eds) Fisheries techniques, 2nd edn. American Fisheries Society, Bethesda, pp 447–481
2. Asanka U, Jayasinghe D, Garcia-Berthou E et al (2015) Co-occurring bighead and silver carps show similar preference but different isotopic niche overlap in different lakes. Environ Biol Fish 98:1185–1199
3. Blossey B (1999) Before, during and after: the need for long-term monitoring in invasive plant species management. Biol Invasions 1:301–311
4. Bremigan MT, Stein RA (1999) Larval gizzard shad success, juvenile effects, and reservoir productivity: toward a framework for multi-system management. Trans Am Fish Soc 128:1106–1124
5. Bremigan MT, Stein RA (2001) Variable gizzard shad recruitment with reservoir productivity: causes and implications for classifying systems. Ecol Appl 11:1425–1437
Cited by
44 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献