Search results for " Habitat quality"

showing 5 items of 5 documents

Interannual variation and long-term trends in proportions of resident individuals in partially migratory birds

2016

Partial migration - a part of a population migrates and another part stays resident year-round on the breeding site - is probably the most common type of migration in the animal kingdom, yet it has only lately garnered more attention. Theoretical studies indicate that in partially migratory populations, the proportion of resident individuals (PoR) should increase in high latitudes in response to the warming climate, but empirical evidence exists for few species. We provide the first comprehensive overview of the environmental factors affecting PoR and the long-term trends in PoR by studying 27 common partially migratory bird species in Finland. The annual PoR values were calculated by divid…

0106 biological sciencesPopulation DynamicsPopulationClimate change010603 evolutionary biology01 natural sciences010605 ornithologyLatitudeBirdsnon-breeding habitat qualityAbundance (ecology)wintering areaWaterfowlAnimalsBird feedingEUROPEAN BIRDSeducationPOPULATIONEcology Evolution Behavior and SystematicsOverwinteringfluctuating food availabilityeducation.field_of_studyCLIMATE-CHANGEdensity-dependent strategybiologyEcologyFINLAND15. Life on landbiology.organism_classificationanimal movementrange shiftbird feedingREPRODUCTIONclimate changeHabitat13. Climate action1181 Ecology evolutionary biologyAUTUMN MIGRATIONAnimal MigrationAnimal Science and ZoologySeasonsBEHAVIORJournal of Animal Ecology
researchProduct

Assessing the importance of nursery areas of European hake (Merluccius merluccius) using a body condition index

2017

Abstract In this study, we analysed the variability of reserve storage in juvenile European hake (Merluccius merluccius) off the western coasts of Italy (Central Mediterranean Sea). Reserve storage was measured by the hepatosomatic index (HSI), in relation to environmental and population covariates. HSI has been proved to be a consistent measure of energy storage in gadoids, thus reflecting quantity and quality of food availability for growth. Generalized Additive Models for Location, Scale and Shape (GAMLSS) were used to model the effect of depth, bottom temperature, bottom currents, fish density and fish body size on HSI of juvenile European hake. The results revealed that reserve storage…

0106 biological sciencesSettore BIO/07 - Ecologiadecision sciences (all)nursery grounds010504 meteorology & atmospheric sciencesmedia_common.quotation_subjectPopulationGeneral Decision Sciences01 natural sciencesecology evolution behavior and systematicsCompetition (biology)Mediterranean seahabitat qualityHakeEuropean hake; habitat quality; hepatosomatic index; Mediterranean sea; nursery grounds; recruitment; decision sciences (all); ecology evolution behavior and systematics; ecologyJuvenile14. Life underwaterSettore SECS-S/05 - Statistica SocialeeducationEcology Evolution Behavior and Systematics0105 earth and related environmental sciencesmedia_commonEuropean hakeeducation.field_of_studybiologyEcology010604 marine biology & hydrobiologyGeneralized additive modelMerluccius merlucciusNursery groundbiology.organism_classificationEcology Evolution Behavior and SystematicFisheryHabitatrecruitmentMediterranean seaEnvironmental sciencehepatosomatic indexecology
researchProduct

Data from: Inter-annual variation and long-term trends in proportions of resident individuals in partially migratory birds

2016

Partial migration – a part of a population migrates and another part stays resident year-round on the breeding site – is probably the most common type of migration in the animal kingdom, yet it has only lately garnered more attention. Theoretical studies indicate that in partially migratory populations, the proportion of resident individuals (PoR) should increase in high latitudes in response to the warming climate, but empirical evidence exists for few species. We provide the first comprehensive overview of the environmental factors affecting PoR and the long-term trends in PoR by studying 27 common partially migratory bird species in Finland. The annual PoR values were calculated by divid…

WinteringCygnus olorSturnus vulgarisBucephala clangulaAnas platyrhynchosLarus argentatusproportion of migrantstree seed cropCerthia familiarismedicine and health carenon-breeding habitat qualityCorvus coroneCyanistes caeruleusLoxia curvirostraCorvus monedulaParus majorwintering areaTurdus merulaCarduelis chlorisfluctuating food availabilityproportion of residentsEmberiza citrinellaAythya fuliguladensity-dependent strategyCygnus cygnusLife SciencesCarduelis spinusCarduelis flammeaTurdus pilarisrange shiftbird feedingMergus merganserEmberiza schoeniclusLarus marinusFringilla montifringillaMedicineLarus canusPyrrhula pyrrhulaRegulus regulusFringilla coelebs
researchProduct

Structural variables drive the distribution of the sensitive lichen Lobaria pulmonaria in Mediterranean old-growth forests

2015

a b s t r a c t We tested the hypothesis that structural variables related to old-growth features affect the distribution of Lobaria pulmonaria in a Mediterranean National Park of Italy. A total of 36 plots, with old-growth characteristics and representing overall three forest types (beech- oak- and mixed- forests) were studied. The lichen was absent in about half of the sites, suggesting that the selection of old-growth forests based solely on structural features is not sufficient to predict the presence of this species, which therefore proves to be rather sensitive and selective. Its abundance was related to high tree circumference and basal area, and to availability of deadwood, confirmi…

geographygeography.geographical_feature_categoryBasal area Deadwood Forest continuity Habitat quality Lobaria pulmonaria Old-growth forests Tree circumferenceEcologybiologyEcologyGeneral Decision SciencesLobaria pulmonariaForest continuityOld-growth forestbiology.organism_classificationBasal areaBasal areaDeadwoodAbundance (ecology)Indicator speciesForest ecologyOld-growth forestsTree circumferenceLichenBeechEcology Evolution Behavior and SystematicsLobaria pulmonariaHabitat quality
researchProduct

Wpływ zanieczyszczeń komunikacyjnych na glebę i uprawną roślinność przydrożną

2014

Celem pracy było rozpoznanie wpływu zanieczyszczeń komunikacyjnych na glebę i roślinność uprawnianą przy pasie drogowym. Zanieczyszczenia te, to nie tylko spaliny, ale również pyły powstające w wyniku tarcia opon o nawierzchnie drogi, płyny wyciekające z nieszczelnych instalacji oraz śmieci wyrzucane przez kierowców w trakcie jazdy. Roślina bytująca w takim środowisku, jest narażona na liczne stresy i uszkodzenia. Główną przyczyną wpływającą niekorzystnie na rozwój roślin, a nawet powodującą ich śmierć, jest potęgujące się stale zanieczyszczenie powietrza, zwłaszcza w rejonach śródmiejskich jak i wzdłuż obciążonych tras komunikacyjnych. Na skutek używania soli do zwalczania gołoledzi, naraż…

zanieczyszczenia komunikacyjneroad transport.zanieczyszczenia glebowetransport drogowytransport pollutionassessment of habitat qualityzdrowotność roślin uprawnychocena jakości siedliskahealth of cultivated plantscontamination of soilInżynieria Ekologiczna
researchProduct