0000000000970630

AUTHOR

Gaute Kjærstad

showing 3 related works from this author

Impacts of piscicide-induced fish removal on resource use and trophic diversity of lake invertebrates

2022

Chemical eradication of non-native species has become a widely used method to mitigate the potential negative im- pacts of altered competitive or predatory dynamics on biodiversity and natural ecosystem processes. However, the re- sponses of non-target species can vary from rapid full recovery to delayed or absent recolonization, and little is known about the potential shifts in resource use and trophic diversity of native species following chemical treatments. We used a before-after-control-impact approach to study the effects of rotenone piscicide treatment on abundance and tro- phic niche of benthic invertebrates in three untreated and three treated lakes in central Norway, the latter gr…

HistoryStable isotope analysisEnvironmental EngineeringFood ChainPolymers and PlasticsOdonatahauki:Zoology and botany: 480 [VDP]järvetIndustrial and Manufacturing EngineeringRotenoneEnvironmental ChemistryAnimalsSpecies interactionssärkivieraslajitBusiness and International ManagementWaste Management and Disposal:Zoologiske og botaniske fag: 480 [VDP]Community dynamicsEcosystemEphemeropterapoistaminenfungiChemical eradicationFishesFood webBayes TheoremeliöyhteisötselkärangattomatPollutionInvertebratesbiodiversiteettiLakesisotooppianalyysiEsocidaeravintoverkotThe Science of the total environment
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Fremmede arter i Norge: resultater fra kvantitative økologiske risikovurderinger

2020

1. Due to globalisation, trade and transport, the spread of alien species is increasing dramatically. Some alien species become ecologically harmful by threatening native biota. This can lead to irreversible changes in local biodiversity and ecosystem functioning, and, ultimately, to biotic homogenisation. 2. We risk-assessed all alien plants, animals, fungi and algae, within certain delimitations, that are known to reproduce in Norway. Mainland Norway and the Arctic archipelago of Svalbard plus Jan Mayen were treated as separate assessment areas. Assessments followed the Generic Ecological Impact Assessment of Alien Species (GEIAA) protocol, which uses a fully quantitative set of criteria.…

:Ecology: 488 [VDP]VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488Invasjonsbiologi / Invasion biologyecological impactinvasion potentialgenetic contaminationInvasive speciesevidence‐based managementinvasive speciesevidence-based managementInvasjonsbiologiGenetic contaminationGE1-350ecological effectAlien speciesQH540-549.5VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488EcologyImpact assessmentEcologyVDP::Økologi: 488Evidence-based managementVDP::Ecology: 488quantitative impact assessmentPeer reviewEnvironmental sciencesGeographydoor‐knocker speciesdoor-knocker species:Økologi: 488 [VDP]Invasion biology
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Data from: Ecological impact assessments of alien species in Norway

2020

Due to globalisation, trade and transport, the spread of alien species is increasing dramatically. Some alien species become ecologically harmful by threatening native biota. This can lead to irreversible changes in local biodiversity and ecosystem functioning, and, ultimately, to biotic homogenisation. We risk-assessed all alien plants, animals, fungi and algae, within certain delimitations, that are known to reproduce in Norway. Mainland Norway and the Arctic archipelago of Svalbard plus Jan Mayen were treated as separate assessment areas. Assessments followed the Generic Ecological Impact Assessment of Alien Species (GEIAA) protocol, which uses a fully quantitative set of criteria. A tot…

SvalbardInvasion potentialNorwayarea of occupancyecological impactintroduction pathwayalien speciesecological effectgenetic contaminationquantitative impact assessmentdoor-knocker speciesJan Mayen
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