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University of Alberta

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ResearcherID: A-3749-2014

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Employment (1)

University of Alberta: Edmonton, AB, CA

1992 to present | Professor (Biological Sciences)
Employment
Source: Self-asserted source
Jens Roland

Education and qualifications (1)

University of British Columbia: Vancouver, BC, CA

1986 | PhD (Zoology)
Education
Source: Self-asserted source
Jens Roland

Works (50 of 72)

Items per page:
Page 1 of 2

Population extinction and metapopulation synchrony: a reassessment

Oikos
2022-01 | Journal article
DOI: 10.1111/oik.08675
Contributors: Stephen F. Matter; Alessandro Filazzola; Jens Roland
Source: check_circle
Crossref

Spatial variation in early‐winter snow cover determines local dynamics in a network of alpine butterfly populations

Ecography
2021-02 | Journal article
DOI: 10.1111/ecog.05407
Contributors: Jens Roland; Alessandro Filazzola; Stephen F. Matter
Source: check_circle
Crossref

Inclusion of trophic interactions increases the vulnerability of an alpine butterfly species to climate change

Global Change Biology
2020-05 | Journal article
DOI: 10.1111/gcb.15068
Contributors: Alessandro Filazzola; Stephen F. Matter; Jens Roland
Source: check_circle
Crossref

Generalist predation on forest tent caterpillar varies with forest stand composition: an experimental study across multiple life stages

Ecological Entomology
2012 | Journal article
DOI:

10.1111/j.1365-2311.2011.01330.x

WOSUID:

WOS:000299253000002
Contributors: Nixon,AE; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Mating failure of female Parnassius smintheus butterflies: a component Allee effect, but not a demographic effect

Entomologia Experimentalis et Applicata
2012 | Journal article
SOURCE-WORK-ID:

0708151731828-2
Contributors: Matter,SF; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Variability in winter climate, and winter extremes, reduce population growth of an alpine butterfly

Ecology
2012 | Journal article
DOI:

10.1890/12-0611.1

WOSUID:

WOS:000316186900021
Contributors: Matter,SF; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Young love? Mating of Parnassius smintheus Doubleday (Papilionidae)

Journal of the Lepidopteristaes Society
2012 | Journal article
WOSUID:

WOS:000306025400004
Contributors: Matter,SF; Reed,B; Illerbrun,KK; Doyle,A; McPike,S; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

An assessment of direct and indirect effects of climate change for populations of the Rocky Mountain Apollo butterfly, Parnassius smintheus (Lepidoptera: Papilionidae)

Insect Science
2011 | Journal article
SOURCE-WORK-ID:

0708151731828-5
Contributors: Matter,SF; Doyle,AJ; Illerbrun,KK; Wheeler,J; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Treeline proximity alters an alpine plant-herbivore interaction

Oecologia
2011 | Journal article
SOURCE-WORK-ID:

0708151731828-6
Contributors: Illerbrun,KK; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Effects of Experimental population extinction for the spatial population dynamics of the butterfly Parnassius smintheus.

Oikos
2010 | Journal article
DOI:

10.1111/j.1600-0706.2010.18666.x

WOSUID:

WOS:000284371000013
Contributors: Matter,SF; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Local extinction synchronizes population dynamics in spatial networks

Proceedings of the Royal Society of London, B
2010 | Journal article
DOI:

10.1098/rspb.2009.1520

WOSUID:

WOS:000273882800010
Contributors: Matter,SF; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Development of a combined sex pheromone-based monitoring system for Malacosoma disstria Habner (Lepidoptera: Lasoicampidae) and Choristoneura conflictana (Walker) (Lepidoptera: Tortricidae)

Environmental Entomology
2009 | Journal article
DOI:

10.1603/022.038.0220

WOSUID:

WOS:000264863300020
Contributors: Jones,BC; Roland,J; Evenden,ML
Source: Self-asserted source
Jens Roland via ResearcherID

Interactions between habitat quality and connectivity affect immigration but not abundance or population growth of the butterfly, Parnassius smintheus

Oikos
2009 | Journal article
DOI:

10.1111/j.1600-0706.2009.17438.x

WOSUID:

WOS:000270435300003
Contributors: Matter,SF; Ezzeddine,M; Duermit,E; Mashburn,J; Hamilton,R; Lucas,T; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

On the detectability of forest insect defoliation: Direct observation via aerial survey versus dendroecological inference in the case of forest tent caterpillar on trembling aspen

Journal of the Entomological Society of Ontario
2009 | Journal article
SOURCE-WORK-ID:

0708151731829-11
Contributors: Cooke,BJ; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

On the duration and distribution of forest tent caterpillar outbreaks in east-central Canada

Journal of the Entomological Society of Ontario
2009 | Journal article
SOURCE-WORK-ID:

0708151731829-12
Contributors: Cooke,BJ; Lorenzetti,F; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

The impact of parasitoid emergence time on host-parasitoid population dynamics

Theoretical Population Biology
2009 | Journal article
DOI:

10.1016/j.tpb.2009.02.004

WOSUID:

WOS:000265736600011
Contributors: Cobbold,CA; Roland,J; Lewis,MA
Source: Self-asserted source
Jens Roland via ResearcherID

Caterpilars on the run - induced defences create spatial patterns in host plant damage

Ecography
2008 | Journal article
DOI:

10.1111/j.0906-7590.2008.05365.x

WOSUID:

WOS:000256496300005
Contributors: Roslin,T; Syrjala,H; Roland,J; Harrison,P; Fownes,S; Matter,SF
Source: Self-asserted source
Jens Roland via ResearcherID

Reproductive asynchrony in natural butterfly populations and its consequences for female matelessness

Journal of Animal Ecology
2008 | Journal article
DOI:

10.1111/j.1365-2656.2008.01385.x

WOSUID:

WOS:000256539800014
Contributors: Calabrese,JM; Ries,L; Matter,SF; Debinski,DM; Auckland,JN; Roland,J; Fagan,WF
Source: Self-asserted source
Jens Roland via ResearcherID

Effect of matrix habitat on the spread of flea beetle introductions for biological control of leafy spurge

Landscape Ecology
2007 | Journal article
DOI:

10.1007/s10980-006-9069-z

WOSUID:

WOS:000247386600007
Contributors: Jonsen,ID; Bourchier,RS; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Encroaching forests decouple alpine butterfly population dynamics

Proceedings of the National Academy of Sciences
2007 | Journal article
DOI:

10.1073/pnas.0705511104

WOSUID:

WOS:000249064700033
Contributors: Roland,J; Matter,SF
Source: Self-asserted source
Jens Roland via ResearcherID

Influence of dispersal, stochasticity, and an Allee effect on the persistence of weed biocontrol introductions

Ecological Modelling
2007 | Journal article
DOI:

10.1016/j.ecolmodel.2006.12.009

WOSUID:

WOS:000246189800029
Contributors: Jonsen,ID; Bourchier,RS; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Trembling aspen responses to drought and defoliation by forest tent caterpillar and reconstruction of recent outbreaks in Ontario

Canadian Journal of Forest Research
2007 | Journal article
DOI:

10.1139/X07-015

WOSUID:

WOS:000251050300008
Contributors: Cooke,BJ; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Effect of melanism of alpine Colias nastes butterflies (Lepidoptera: Pieridae) on activity and predation

The Canadian Entomologist
2006 | Journal article
WOSUID:

WOS:000237124200005
Contributors: Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Egg viability and larval contribution to fecundity of Parnassius smintheus Doubleday (Papillionidae)

Journal of the Lepidopterists' Society
2006 | Journal article
SOURCE-WORK-ID:

0708151731831-21
Contributors: Matter,SF; Wick,A; Gaydos,M; Frantz,M; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Moth diveristy in a fragmented habitat: Importance of functional groups and landscape scale in the boreal forest

Annals of the Entomological Society of America
2006 | Journal article
DOI:

10.1603/0013-8746(2006)99[1110:MDIAFH]2.0.CO;2

WOSUID:

WOS:000242033400012
Contributors: Schmidt,BC; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Parasitoids on the loose - experimental lack of support for the parasitoid movement hypothesis

Oikos
2006 | Journal article
DOI:

10.1111/j.2006.0030-1299.15252

WOSUID:

WOS:000241198800008
Contributors: Roth,D; Roland,J; Roslin,T
Source: Self-asserted source
Jens Roland via ResearcherID

Among- and within-patch components of genetic diversity respond at different rates to habitat fragmentation: An empirical demonstration

Proceedings of the Royal Society B
2005 | Journal article
DOI:

10.1098/rspb.2004.2976

WOSUID:

WOS:000228535600012
Contributors: Keyghobadi,N; Roland,J; Matter,SF; Strobeck,C
Source: Self-asserted source
Jens Roland via ResearcherID

Are the "seeds" of spatial variation cyclic dynamics apparent in spatially-replicated short time-series? An example from the forest tent caterpillar

Annales Zoologici Fennici
2005 | Journal article
WOSUID:

WOS:000232236200009
Contributors: Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Competitive effects of the forest tent caterpillar on the gallers and leaf-miners of trembling aspen

Ecoscience
2005 | Journal article
DOI:

10.2980/i1195-6860-12-2-172.1

WOSUID:

WOS:000230239500003
Contributors: Roslin,T; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Edge avoidance and movement of the butterfly, Parnassius smintheus in matrix and non-matrix habitat

Landscape Ecology
2005 | Journal article
DOI:

10.1007/s10980-004-1010-8

WOSUID:

WOS:000230299600001
Contributors: Ross,JA; Matter,SF; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Genetic differentiation and gene flow among populations of the alpine butterfly, Parnassius smintheus, vary with landscape connectivity

Molecular Ecology
2005 | Journal article
DOI:

10.1111/j.1365-294X.2005.02563.x

WOSUID:

WOS:000229190300005
Contributors: Keyghobadi,N; Roland,J; Strobeck,C
Source: Self-asserted source
Jens Roland via ResearcherID

How parasitism affects critical patch-size in a host-parasitoid system: Application to forest tent caterpillar

Theoretical Population Biology
2005 | Journal article
DOI:

10.1016/j.tpb.2004.09.004

WOSUID:

WOS:000227410000004
Contributors: Cobbold,CA; Lewis,MA; Lutscher,F; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Predicting immigration of two species in contrasting landscapes: Effects of scale, patch size and isolation

Oikos
2005 | Journal article
DOI:

10.1111/j.0030-1299.2005.14127.x

WOSUID:

WOS:000232979300016
Contributors: Matter,SF; Roslin,T; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Migration and survival of Parnassius smintheus: Detecting effects of habitat for individual butterflies

Ecological Applications
2004 | Journal article
DOI:

10.1890/03-5164

WOSUID:

WOS:000224568800017
Contributors: Matter,SF; Roland,J; Moilanen,A; Hanski,I
Source: Self-asserted source
Jens Roland via ResearcherID

Relationships among population estimation techniques: An examination for the butterfly Parnassius smintheus

Journal of the Lepidopterist's Society
2004 | Journal article
SOURCE-WORK-ID:

0708151731833-32
Contributors: Matter,SF; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Developing techniques for monitoring forest tent caterpillar populations using synthetic pheromones

The Canadian Entomologist
2003 | Journal article
WOSUID:

WOS:000182980500009
Contributors: Schmidt,BC; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Evaluation of synthetic pheromones for monitoring forest tent caterpillar (Lepidoptera: Lasiocampidae) populations

Environmental Entomology
2003 | Journal article
DOI:

10.1603/0046-225X-32.1.214

WOSUID:

WOS:000181429900026
Contributors: Schmidt,BC; Roland,J; Wakarchuk,D
Source: Self-asserted source
Jens Roland via ResearcherID

Gall size determines the structure of the Rabdophaga strobiloides host-parasitoid community

Ecological Entomology
2003 | Journal article
DOI:

10.1046/j.1365-2311.2003.00553.x

WOSUID:

WOS:000185445900011
Contributors: van Hezewijk,BH; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Survivorship bias in dendroecological reconstruction of forest tent caterpillar outbreaks using trembling aspen

Tree Ring Research
2003 | Journal article
SOURCE-WORK-ID:

0708151731833-36
Contributors: Cooke,BJ; Miller,WE; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

The effect of gall size on the sructure of the willow pinecone gall community

Ecological Entomology
2003 | Journal article
SOURCE-WORK-ID:

0708151731833-37
Contributors: van Hezewijk,BH; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

The effect of winter temperature on forest tent caterpillar (Lepidoptera: Lasiocampidae) egg survival and population dynamics in northern climates

Environmental Entomology
2003 | Journal article
DOI:

10.1603/0046-225X-32.2.299

WOSUID:

WOS:000182354100009
Contributors: Cooke,BJ; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

The effects of isolation, habitat area and resources on the abundance, density and movement of the butterfly Parnassius smintheus

American Midland Naturalist
2003 | Journal article
DOI:

10.1674/0003-0031(2003)150[0026:TEOIHA]2.0.CO;2

WOSUID:

WOS:000183990100003
Contributors: Matter,SF; Roland,J; Keyghobadi,N; Sabourin,K
Source: Self-asserted source
Jens Roland via ResearcherID

An experimental examination of the effect of habitat quality on the dispersal and local abundance of Parnassius smintheus

Ecological Entomology
2002 | Journal article
DOI:

10.1046/j.1365-2311.2002.00407.x

WOSUID:

WOS:000175841800007
Contributors: Matter,SF; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Effects of meadow suitability on female behaviour in the alpine butterfly, Parnassius smintheus Doubleday

Ecological Entomology
2002 | Journal article
DOI:

10.1046/j.1365-2311.2002.00426.x

WOSUID:

WOS:000176572300009
Contributors: Fownes,S; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Isolation of novel microsatellite loci in the Rocky Mountain apollo butterfly, Parnassius smintheus

Hereditas
2002 | Journal article
DOI:

10.1034/j.1601-5223.2002.1360311.x

WOSUID:

WOS:000181303800011
Contributors: Keyghobadi,N; Roland,J; Strobeck,C
Source: Self-asserted source
Jens Roland via ResearcherID

The influence of matrix habitat on Aphthona flea beetle immigration to leafy spurge patches

Oecologia
2001 | Journal article
DOI:

10.1007/s004420000589

WOSUID:

WOS:000168395600019
Contributors: Jonsen,ID; Bourchier,RS; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Alpine Parnassius butterfly dispersal: Effects of landscape and population size

Ecology
2000 | Journal article
DOI:

10.1890/0012-9658(2000)081[1642:APBDEO]2.0.CO;2

WOSUID:

WOS:000087446100014
Contributors: Roland,J; Keyghobadi,N; Fownes,S
Source: Self-asserted source
Jens Roland via ResearcherID

Spatial analysis of large-scale patterns of forest tent caterpillar outbreaks

Ecoscience
2000 | Journal article
WOSUID:

WOS:000166574000003
Contributors: Cooke,BJ; Roland,J
Source: Self-asserted source
Jens Roland via ResearcherID

Influence of landscape on population genetic structure of the alpine butterfly Parnassius smintheus (Papilionidae)

Molecular Ecology
1999 | Journal article
DOI:

10.1046/j.1365-294x.1999.00726.x

WOSUID:

WOS:000083498300012
Contributors: Keyghobadi,N; Roland,J; Strobeck,C
Source: Self-asserted source
Jens Roland via ResearcherID

Effects of climate and forest structure on duration of forest tent caterpillar outbreak across central Ontario

Canadian Entomologist
1998 | Journal article
DOI:

10.4039/Ent130703-5

WOSUID:

WOS:000076873400009
Contributors: Roland,J; Mackey,B; Cooke,B
Source: Self-asserted source
Jens Roland via ResearcherID
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