You are here: Home
/ Publication Information
Title: Nekton communities in Hawaiian coastal wetlands: The distribution and abundance of introduced fish species
Author: MacKenzie, Richard Ames; Bruland, Gregory L.
Source: Estuaries and Coasts. 35:212-226
Description: Nekton communities were sampled from 38 Hawaiian coastal wetlands from 2007 to 2009 using lift nets, seines, and throw nets in an attempt to increase our understanding of the nekton assemblages that utilize these poorly studied ecosystems. Nekton were dominated by exotic species, primarily poeciliids (Gambusia affinis, Poecilia spp.) and tilapia. These fish were present in 50–85% of wetlands sampled; densities were up to 15 times greater than native species. High densities of exotic fish were generally found in isolated wetlands with no connection to the ocean, were often the only nekton present, were positively correlated with surface water total dissolved nitrogen, and were negatively correlated with native species richness. Native species were present in wetlands with complete or partial connection to the ocean. Additional studies are needed to document exotic fish impacts on native fish and bird habitat and whether native fish communities can contribute to invasion resistance of coastal wetlands. Future wetland restoration should include exotic fish eradication, maintenance of hydrological connection to the ocean, or programs to prevent future introductions in order to create wetlands that support native-dominated nekton communities.
Keywords: Gambusia affinis, Hawaii, Invasive fish, Poeciliidae, Tilapia, Tropical coastal wetlands
View or Print this Publication (737 KB)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
MacKenzie, Richard Ames; Bruland, Gregory L. 2012. Nekton communities in Hawaiian coastal wetlands: The distribution and abundance of introduced fish species. Estuaries and Coasts. 35:212-226.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility