Scott F. Collins

TL;DR: The results stress that much of the subsidy remains near the stream, but also that subsidies are capable of long-distance dispersal into adjacent environments, and that the effective "biological stream width" of stream and river ecosystems is often much larger than has been defined by hydro-geomorphic metrics alone.

TL;DR: The results indicate the strength of bottom-up and top- down responses to subsidy additions was asymmetrical, with top-down forces masking bottom- up effects that required multiple years to manifest, and highlight the need for nutrient mitigation programs to consider multiple pathways of energy and nutrient flow to account for the complex effects of salmon subsidies in stream-riparian ecosystems.

TL;DR: Evidence is reported from a manipulative experiment demonstrating that bighead carp greatly reapportion pools of organic matter from planktonic to benthic habitats to such a degree that additional effects propagated across ecological boundaries into terrestrial ecosystems.

TL;DR: In this article, the authors quantify changes in water chemistry and benthic periphyton in three streams in northern Michigan that have spawning populations of Pacific salmon and find that spawning runs of nonnative Pacific salmon affect stream ecosystems in the Great Lakes Basin.

TL;DR: Critics critically evaluate some of the key ecological assumptions underpinning the use of nutrient replacement as a means of recovering salmon populations and a range of other organisms thought to be linked to productive salmon runs and urge caution in the application of nutrient mitigation as a management tool.