Search results for "marine food webs"

showing 3 items of 3 documents

Marine food web perspective to fisheries‐induced evolution

2021

Abstract Fisheries exploitation can cause genetic changes in heritable traits of targeted stocks. The direction of selective pressure forced by harvest acts typically in reverse to natural selection and selects for explicit life histories, usually for younger and smaller spawners with deprived spawning potential. While the consequences that such selection might have on the population dynamics of a single species are well emphasized, we are just beginning to perceive the variety and severity of its propagating effects within the entire marine food webs and ecosystems. Here, we highlight the potential pathways in which fisheries‐induced evolution, driven by size‐selective fishing, might reson…

eco‐evolutionary changelife historymarine food webssize‐selective fishingEvolutionQH359-425fisheries‐induced evolutionrecovery potentialEvolutionary Applications
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Assessing anthropogenic pressures on coastal marine ecosystems using stable CNS isotopes: State of the art, knowledge gaps, and community-scale persp…

2015

Abstract In recent decades, the analysis of carbon, nitrogen and sulfur stable isotopes (SIA) has emerged as a powerful, viable methodology for examining food web structure and dynamics, as well as addressing a number of applied issues. Here, we provide a state-of-the-art review of the use of SIA for assessing anthropogenic pressures on natural ecosystems, in order to establish current knowledge gaps and identify promising applications for evaluating the ecological status of marine coastal waters. Specifically, the potential of SIA to provide food web-scale indicators for estimating cumulative anthropogenic pressures is addressed. The review indicates that the methodology has been used for …

PollutionSettore BIO/07 - Ecologiabusiness.industryEcologymedia_common.quotation_subjectEnvironmental resource managementMarine food webInvasive speciecarbon nitrogen and sulfur stable isotopes marine food webs multiple anthropogenic pressures eutrophication pollution invasive speciesAquatic ScienceEutrophicationOceanographyPollutionFood webHabitatIndicator speciesCarbon nitrogen and sulfur stable isotopeEnvironmental scienceMultiple anthropogenic pressureMarine ecosystembusinessEutrophicationIsotope analysisTrophic levelmedia_common
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Marine food web perspective to fisheries-induced evolution

2021

Fisheries exploitation can cause genetic changes in heritable traits of targeted stocks. The direction of selective pressure forced by harvest acts typically in reverse to natural selection and selects for explicit life-histories, usually for younger and smaller spawners with deprived spawning potential. While the consequences that such selection might have on the populational dynamics of a single species are well emphasised, we are just beginning to perceive the variety and severity of its propagating effects within the entire marine food webs and ecosystems. Here, we highlight the potential pathways in which fishing-induced evolution, driven by size-selective fishing, might resonate throu…

fishing-induced evolutionkalastusmarine food webskalatalouslife-historykalakannatsize-selective fishingevoluutiotrophic cascadesrecovery potentialeco-evolutionary changemeriekologiaravintoverkot
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