Migratory-derived resources induce elongated food chains through middle-up food web effects.

ABSTRACT:

Background

Seasonal movements of animals often result in the transfer of large amounts of energy and nutrients across ecosystem boundaries, which may have large consequences on local food webs through various pathways. While this is known for both terrestrial- and aquatic organisms, quantitative estimates on its effects on food web structure and identification of key pathways are scarce, due to the difficulty in obtaining replication on ecosystem level with negative control, i.e. comparable systems without migration.

Methods

In this study, we estimate the impact of Arctic charr (Salvelinus alpinus) migration on riverine ecosystem structure, by comparing multiple streams with strictly resident populations above natural migration barriers with streams below those barriers harb

SUBMITTER: Moccetti C 

PROVIDER: S-EPMC11337878 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature