Open AccessScience for integrative management of a diadromous fish stock: interdependencies of fisheries, flow, and habitat restoration
Author(s) -
Stuart H. Munsch,
Correigh M. Greene,
Rachel C. Johnson,
William H. Satterthwaite,
Hiroo Imaki,
Patricia L. Brandes,
Michael R. O’Farrell
Publication year - 2020
Publication title -
canadian journal of fisheries and aquatic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.09
H-Index - 153
eISSN - 1205-7533
pISSN - 0706-652X
DOI - 10.1139/cjfas-2020-0075
Subject(s) - habitat , fish migration , fishery , restoration ecology , interdependence , fisheries management , environmental resource management , management strategy , ecology , geography , environmental science , business , fishing , biology , business administration , political science , law
Fish face many anthropogenic stressors. Authorities in marine, estuarine, and freshwater realms often share interdependent fisheries management goals, but address singular stressors independently. Here, we present a case study suggesting that coordinating stressor relief across management realms may synergize conservation efforts, especially to actualize restoration benefits. Major efforts are underway to restore juvenile salmon habitat across California’s Central Valley landscape, but it is unclear how fisheries and flow management will influence juvenile salmon occupancy of restored sites. Leveraging monitoring data, we find that for juvenile salmon (<55 mm) to actualize benefits of restored habitats will likely require maintaining spawner abundances and flows at or above intermediate values, especially in less-connected portions of the landscape. Furthermore, restoration efforts may prioritize more connected regions to promote use of restored areas, considering that less connected areas are often uninhabited when water and spawners are scarcer. This ecosystem-based framework that evaluates interdependencies of management decisions may be applied to realize natural productivity and enhance conservation in many systems.