Top-down cascades in lakes and oceans: Different perspectives but same story?

Handle URI:
http://hdl.handle.net/10754/566182
Title:
Top-down cascades in lakes and oceans: Different perspectives but same story?
Authors:
Hessen, Dag Olav; Kaartvedt, Stein ( 0000-0002-8793-2948 )
Abstract:
While top-down cascades from fish to phytoplankton have been a core topic in limnology for the past four decades, it has attracted far less interest in marine ecology. This is partly for historical reasons, since lake studies have been motivated by the ability to regulate algal blooms induced by cultural eutrophication, while marine studies have been more oriented towards fish yield and thus bottom-up processes. Also freshwaters are closed ecosystems with lower diversity and complexity, making models and predictions on trophic levels and interactions comparatively simpler. Here, we compare some key properties of freshwater and marine top-down cascades and argue that despite some striking differences, the large number of freshwater studies may pose valuable insights also for marine systems. Moreover, we argue that there is an urgent need for more focus on top-down cascades in marine systems that address how top predators or fishing may propagate through the food web and impact autotrophic biomass, production, C-sequestration and thus ultimately the global carbon cycle and climate. © 2014 The Author. Published by Oxford University Press. All rights reserved.
KAUST Department:
Red Sea Research Center (RSRC)
Publisher:
Oxford University Press (OUP)
Journal:
Journal of Plankton Research
Issue Date:
16-May-2014
DOI:
10.1093/plankt/fbu040
Type:
Article
ISSN:
01427873
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorHessen, Dag Olaven
dc.contributor.authorKaartvedt, Steinen
dc.date.accessioned2015-08-12T09:31:28Zen
dc.date.available2015-08-12T09:31:28Zen
dc.date.issued2014-05-16en
dc.identifier.issn01427873en
dc.identifier.doi10.1093/plankt/fbu040en
dc.identifier.urihttp://hdl.handle.net/10754/566182en
dc.description.abstractWhile top-down cascades from fish to phytoplankton have been a core topic in limnology for the past four decades, it has attracted far less interest in marine ecology. This is partly for historical reasons, since lake studies have been motivated by the ability to regulate algal blooms induced by cultural eutrophication, while marine studies have been more oriented towards fish yield and thus bottom-up processes. Also freshwaters are closed ecosystems with lower diversity and complexity, making models and predictions on trophic levels and interactions comparatively simpler. Here, we compare some key properties of freshwater and marine top-down cascades and argue that despite some striking differences, the large number of freshwater studies may pose valuable insights also for marine systems. Moreover, we argue that there is an urgent need for more focus on top-down cascades in marine systems that address how top predators or fishing may propagate through the food web and impact autotrophic biomass, production, C-sequestration and thus ultimately the global carbon cycle and climate. © 2014 The Author. Published by Oxford University Press. All rights reserved.en
dc.publisherOxford University Press (OUP)en
dc.subjectCarbon sequestrationen
dc.subjectFood weben
dc.subjectGrazingen
dc.subjectPelagicen
dc.subjectPredationen
dc.subjectTrophic cascadeen
dc.titleTop-down cascades in lakes and oceans: Different perspectives but same story?en
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalJournal of Plankton Researchen
dc.contributor.institutionDepartment of Bioscience, Aquatic Biology and Toxicology, University of Oslo, Box 1066, Blindern, Oslo 0316, Norwayen
kaust.authorKaartvedt, Steinen
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