Ecosystems

pp 1–15

A Framework for Evaluating Heterogeneity and Landscape-Level Impacts of Non-native Aquatic Species

  • M. Jake Vander Zanden
  • Gretchen J. A. Hansen
  • Alexander W. Latzka
20th Anniversary Paper

DOI: 10.1007/s10021-016-0102-z

Cite this article as:
Vander Zanden, M.J., Hansen, G.J.A. & Latzka, A.W. Ecosystems (2017). doi:10.1007/s10021-016-0102-z

Abstract

Non-native species are a major component of global environmental change, and aquatic systems are especially vulnerable to non-native species impacts. Much of the research on aquatic non-native species impact has occurred at the local or site level. In reality, non-native species impacts play out across multiple spatial scales on heterogeneous landscapes. How can we ‘scale up’ our understanding of site-level impacts to the broader landscape scale? To address this disconnect, we synthesize our current understanding of key components of landscape-scale non-native species impacts: geographic range, abundance, and local impacts. Most aquatic non-native species have small ranges, while a few have large ranges. However, aquatic non-native species are often far from saturated on landscapes, and occurrence records are often woefully incomplete. Aquatic non-native species are often at low abundances where they are present, reaching high abundance in a small number of locations. Finally, local-scale impact can be estimated from abundance, but this requires knowledge of the abundance–impact relationship. Considering these multiple components enables understanding of non-native species impacts at broader spatial scales. Although the landscape-level impacts of aquatic non-native species may be high, the spatial distribution of site-level impacts is uneven, and highly impacted sites may be relatively uncommon. This heterogeneity in impacts provides an opportunity to optimize and prioritize non-native species management and prevention efforts.

Keywords

aquaticnon-nativerangedistributionoccupancyabundanceimpactlandscapemacroecology

Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • M. Jake Vander Zanden
    • 1
  • Gretchen J. A. Hansen
    • 2
  • Alexander W. Latzka
    • 3
  1. 1.Center for LimnologyUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Minnesota Department of Natural ResourcesSt. PaulUSA
  3. 3.Department of Natural Resource SciencesMcGill UniversitySte. Anne de BellevueCanada