DSpace Angular :: Browsing ekol by Issue Date

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Pollen analysis and 14C dating in outlining vegetation history of the primeval forest Fiby urskog, south Sweden

(SND, 2019) Skoglund, Jerry; Hytteborn, Håkan; Karlsson, Sven

Materialet avser rådata som legat till grund för en pollenstudie vars syfte är att beskriva vegetationshistorien i Fiby urskog, Uppland, de senaste ca 7000 åren. En ca 100 cm sedimentpropp togs i en central våtmark. Tonvikt ligger på de senaste ca 1000 åren där granens invandring och eventuell kulturpåverkan betonas särskilt. 14C-analys har använts vid åldersbestämning liksom landhöjningsdata, diatomanalys och stratigrafi.

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Grunddata diametertillväxt träd i miombo och acaciaskog, KIH, 1991–2010, Tanzania

(Sveriges lantbruksuniversitet, Institutionen för ekologi, 2021-03-23T09:12:58.185415Z) Ingvar Backéus; Jerry Skoglund; Christina Skarpe; Håkan Hytteborn

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Data for: Historiska floraböcker speglar förändringar i blomningens fenologi till följd av varmare klimat

(Sveriges lantbruksuniversitet, Institutionen för ekologi, 2021-07-06T17:19:48.037738Z) Alistair Auffret

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Environmental DNA metabarcoding elucidates patterns of fish colonisation and co-occurrences with amphibians in temperate wetlands created for biodiversity

(Sveriges lantbruksuniversitet, Sveriges lantbruksuniversitet, Institutionen för ekologi, 2021-07-06T17:21:20.115758Z) Ineta Kačergytė; Erik Petersson; Debora Arlt; Micaela Hellström; Jonas Knape; Johan Spens; Michał Żmihorski; Tomas Pärt

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Data till: Vägrenar fungerar som korridorer och vägar som barriärer för rörelser av blombesökande insekter

(Sveriges lantbruksuniversitet, Institutionen för ekologi, 2021-08-26T14:04:52.693434Z) Juliana Dániel-Ferreira; Åsa Berggren; Jörgen Wissman; Erik Öckinger

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Data från ett plottexperiment i Lönnstorp, Sverige, som blandar raps (OSR) med olika baljväxter för att bedöma skadedjur, patogener och ogräs 2019-2020

(Sveriges lantbruksuniversitet, Ekologi, 2021-11-18T16:39:32.858404Z) Sara Emery

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Abundans av humlor och honungsbin i jordbrukslandskap med eller utan blomremsor och honungsbisamhällen

(Sveriges lantbruksuniversitet, Institutionen för ekologi, 2021-11-24T13:38:17.610175Z) Riccardo Bommarco

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Road verges are corridors and roads barriers for the movement of flower-visiting insects

(ECOGRAPHY, 2021-11-25) Dániel-Ferreira, Juliana; Berggren, Åsa; Wissman, Jörgen; Öckinger, Erik

Roads and road verges can potentially have opposite impacts on organisms that move through the landscape. While road verges can be habitat for a large number of species, and have been proposed to act as dispersal corridors, roads can act as barriers to movement. This duality of roads and road verges has however rarely been assessed simultaneously, and it is unknown to what degree it depends on the amount of traffic on the road and on the habitat quality of the road verge. We used fluorescent powdered dye to track movements of flower-visiting insects along roads with varying traffic intensity, and in verges with contrasting habitat quality (flowering plant species richness and flower density). Insect movements along road verges were more frequent than movements into the adjacent habitats, indicating that verges act as corridors. The frequency of movements that required crossing the road was lower compared to the frequency of movements that did not, suggesting that roads are barriers. The movement patterns were independent of traffic intensity, but the barrier effect was stronger when the road verge had a higher density of flower resources. The effect of roads as a barrier and of the road verges as corridors were independent of each other. Our results suggest that flower-visiting insects tend to remain longer in road verges with high density of flowers and we therefore suggest that managing road verge habitats for an increased plant diversity will mitigate the known negative impacts of roads on insect populations.