Suomeksi
 
 
Publications

Peer-reviewed articles in international journals

Lennartsson T, Ramula S, Tuomi J (in press) Growing competitive or tolerant? Significance of apical dominance in the overcompensating herb Gentianella campestris. Ecology, DOI:10.1002/ecy.2101

Ramula S, Paige K, Lennartsson T, Tuomi J (in press) Overcompensation: a 30-year perspective. Ecology

Hurskainen S, Jäkäläniemi A, Ramula S, Tuomi J. (2017) Tree removal as a management strategy for the lady’s slipper orchid, a flagship species for herb-rich forest conservation. Forest Ecology and Management 406:12-18.

Ramula S, Sorvari J (2017) The invasive herb Lupinus polyphyllus attracts bumblebees but reduces total arthropod abundance. Arthropod-Plant Interactions 11:911-918.

Ramula S. (2017) The generality of management recommendations across populations of an invasive perennial herb. Biological Invasions 19:2623-2632.

Hurskainen S, Jäkäläniemi A, Kaitala V, Kull T, Mõtlep M, Ramula S, Tuomi J (2017) Temporal cycles and spatial asynchrony in the reproduction and growth of a rare nectarless orchid. Botanical Journal of the Linnean Society 183:316-326.

Jauni M, Ramula S (2017) Demographic mechanisms of disturbance and plant diversity promoting the establishment of invasive Lupinus polyphyllus. Journal of Plant Ecology 80:510-517.

Ramula S (2016) No evidence for home-site advantage in the seedling establishment of the invasive Lupinus polyphyllus in Finland. Botany 94:573-577.

Li S-L, Vasemägi A, Ramula S (2016) Genetic variation and population structure of the garden escaper Lupinus polyphyllus in Finland. Plant Systematics and Evolution 302:399-407.

Öst M, Ramula S, Lindén A, Karell P, Kilpi M (2016) Small-scale spatial and temporal variation in the demographic processes underlying the population decline of eiders in the Baltic Sea. Population Ecology 58:121-133.

Li S-L, Vasemägi A, Ramula S (2016) Genetic variation facilitates seedling establishment but not population growth rate of a perennial invader. Annals of Botany 117: 187-194.

Jauni M, Ramula S (2015) Meta-analysis on the effects of exotic plants on the fitness of native plants. Perspectives in Plant Ecology Evolution and Systematics 17:412-420. 

Ramula S, Jauni M, van Ooik T (2015) Propagule pressure governs establishment of an invasive herb. Acta Oecologica 68:18-23.
 

Li S-L, Ramula S (2015) Demographic strategies of plant invaders in temporally varying environments. Population Ecology 27:373-380.

Ramula S, Johansson J, Lindén A, Jonzén N (2015) Linking phenological shifts to demographic change. Climate Research 63:135-144.

Jauni M, Gripenberg S, Ramula S (2015) Non-native plant species benefit from disturbance: a meta-analysis. Oikos 124:122-129.

Hyvönen T, Ramula S (2014) Crop-weed competition rather than temperature limits the population establishment of two annual C4 weeds at the edge of their northern range. Weed Research 54:245-255.

Ramula S (2014) Linking vital rates to invasiveness of a perennial herb. Oecologia 174:1255-1264.

Li S-L, Yu F-H, Werger MJA, Dong M, Ramula S, Zuidema PA (2013) Understanding the effects of a new grazing policy: the impact of seasonal grazing on shrub demography in the Inner Mongolian steppe. Journal of Applied Ecology 50:1377-1386.

Sõber V, Ramula S (2013) Seed number and environmental conditions do not explain seed size variability for the invasive herb Lupinus polyphyllus. Plant Ecology 214:883-892.

Li S-L, Vasemägi A, Matos-Máravi P, Ramula S (2013) Development and testing of microsatellite loci for the invasive herb Lupinus polyphyllus through 454 pyrosequencing. (Primer note) Molecular Ecology Resources 13:760-762 in Permanent genetic resources added to Molecular Ecology Resources Database 1 February 2013-31 March 2013, Arias MC, Atteke M, Augusto SC et al. (includes 47 authors).

Tuomi J, Crone E, Gremer J, Jäkäläniemi A, Lesica P, Pedersen B, Ramula S (2013) Prolonged dormancy interferes with senescence for two perennial herbs with complex life cycles. Journal of Ecology 101:566-576.

Jäkäläniemi A, Ramula S, Tuomi J (2013) Variability of important vital rates challenges the demographic buffering hypothesis. Evolutionary Ecology 27:533-545.

Ramula S, Pihlaja K (2012) Plant communities and the reproductive success of native plants after the invasion of an ornamental herb. Biological Invasions 14:2079-2090.

Buckley YM, Ramula S, Blomberg SP, Burns JH, Crone EE, Ehrlén J, Knight TM, Pichancourt J-B, Quested H, Wardle GM (2010) Causes and consequences of variation in plant population growth rate: a synthesis of matrix population models in a phylogenetic context. Ecology Letters 13:1182-1197.

Ramula S, Buckley YM (2010) Management recommendations for short-lived weeds depend on model structure and explicit characterization of density dependence. Methods in Ecology and Evolution 1:158-167.

Burns JH, Blomberg SP, Crone EE, Ehrlén J, Knight TM, Pichancourt J-B, Ramula S, Wardle GM, Buckley YM (2010) Empirical tests of life-history evolution theory using phylogenetic analysis of plant demography. Journal of Ecology 98:334-344.

Ramula S, Rees M, Buckley YM (2009) Integral projection models perform better for small demographic data sets than matrix population models – a case study of two perennial herbs. Journal of Applied Ecology 46:1048-1053.

Ramula S, Buckley YM (2009) Multiple life stages with multiple replicated density levels are required to estimates density dependence for plants. Oikos 118:1164-1173.

Ramula S, Dinnétz P, Lehtilä K (2009) Spatial data replacing temporal data in population viability analyses: An empirical investigation for plants. Basic and Applied Ecology 10:401-410.

Ramula S, Puhakainen L, Suhonen J, Vallius E (2008) Management actions are required to improve the viability of the rare grassland herb Carlina biebersteinii. Nordic Journal of Botany 26:83-90.

Ramula S, Knight TM, Burns JH, Buckley YM (2008) General guidelines for invasive plant management based on comparative demography of invasive and native plant populations. Journal of Applied Ecology 45:1124-1133.

Ramula S (2008) Responses to the timing of damage in an annual herb: Fitness components versus population performance. Basic and Applied Ecology 9:233-242.

Ramula S (2008) Population dynamics of a monocarpic thistle: simulated effects
of reproductive timing and grazing of flowering plants. Acta Oecologica 33:231-239.

Ramula S, Toivonen E, Mutikainen P (2007) Demographic consequences of pollen limitation and inbreeding depression in a gynodioecious herb. International Journal of Plant Sciences 168:443-453.

Ramula S, Lehtilä K (2005) Matrix dimensionality in demographic analyses of plants: when to use smaller matrices? Oikos 111:563-573.

Ramula S, Lehtilä K (2005) Importance of correlations among matrix entries in stochastic models in relation to number of transition matrices. Oikos 111:9-18.

Ramula S, Mutikainen P (2003) Sex allocation of females and hermaphrodites in the gynodioecious Geranium sylvaticum. Annals of Botany 92:207-213.

Book chapters
Gremer J, Ramula S, Pedersen B, Crone E, Lesica P, Jäkäläniemi A, Tuomi J (2017) Complex life histories and senescence in plants: Avenues to escape age-related decline? in The evolution of senescence in the tree of life edited by Shefferson RP, Owen RJ, Salguero-Gómez R, Cambridge University Press.

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