Las políticas sobre prohibición de descartes pueden ayudar a mejorar la comprensión sobre el papel ecológico de la disponibilidad de alimento en aves marinas

Translated title of the contribution: Discard-ban policies can help improve our understanding of the ecological role of food availability to seabirds

Enric Real*, Giacomo Tavecchia, Meritxell Genovart, Ana Sanz-Aguilar, Ana Payo-Payo, Daniel Oro

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)
1 Downloads (Pure)

Abstract

Discards from fisheries are the most important predictable anthropogenic food subsidies (PAFS) that are being incorporated into marine ecosystems. Changes on their availability and predictability can help us to understand the role that food availability (i.e. an important indicator of the carrying capacity) plays at different ecological levels, from individual fitness to community dynamic and ecosystem functioning. For several reasons, seabirds are an excellent model for evaluating the ecological effects arising from a lack of discards: 1) they are one of the most important discard scavengers, 2) they are easy to monitor and 3) they are apical predators are globally distributed, which makes them suitable health indicators of ecosystems. Here we review the existing information on seabird-discard interactions to identify the main knowledge gaps and propose new challenges for improving our understanding of the general role of food availability. We conclude that the new policies on the ban of fishery discards that are being progressively implemented in the European Union, Norway, Chile and New Zealand offer a suitable experimental scenario for improving our understanding of how a large decrease in the carrying capacity may alter demographic parameters such as survival, dispersal and reproduction, the resilience of populations against perturbations and the role of individual specialization in the foraging process.

Translated title of the contributionDiscard-ban policies can help improve our understanding of the ecological role of food availability to seabirds
Original languageSpanish
Pages (from-to)115-120, S1-S3
Number of pages9
JournalScientia Marina
Volume82
Issue numberS1
Early online date25 Jul 2018
DOIs
Publication statusPublished - Dec 2018

Keywords

  • Discard policies
  • Ecological interactions
  • Fishery discards
  • Food availability
  • Seabirds

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