Recent Publications

Mattila JM, Zimmer M, Vesakoski O, Jormalainen V (2014): Habitat-specific gut microbiota of the marine herbivore Idotea balthica (Isopoda) - Journal of Experimental Marine Biology and Ecology 455: 22–28 (link)

Jormalainen V (in press) Grazers of macroalgae and higher plants. In “Life styles and feeding biology”, volume 2 in the Series The Natural History of the Crustacea. Edited by Les Watling and Martin Thiel. Oxford University Press

Vesakoski O, Jormalainen V (2013): Ignored patterns in studies of local adaptations: When the grass is greener on the allopatric site. -Ideas in Ecology and Evolution 6: 32-36. doi:10.4033/iee.2013.6.7.n (link)

Gagnon K, Rothäusler E, Yli-Renko M, Syrjänen A, Jormalainen V (2013): Seabird guano fertilizes Baltic Sea littoral food webs. –PlosOne. (link)

Poore A, Campbell AH, Coleman, RA, Edgar, GJ, Jormalainen V, Reynolds PL, Sotka EE, Stachowicz JJ, Taylor RB, Vanderklift MA & Duffy JE (2012) Global patterns in the impact of marine herbivores on benthic primary producers. –Ecology Letters 15: 912-922. (link)

Wahl M,
Jormalainen V, Eriksson BK, Coyer JA, Molis M, Schubert H, Dethier M, Ehlers A, Karez R, Kruse I, Lenz M, Pearson G, Rohde S, Wikström SA, Olsen JL (2011): Stress ecology in Fucus: Abiotic, biotic and genetic interactions. –Advances in Marine Biology 59: 37-106 (reprint request)

Jormalainen V, Koivikko R, Ossipov V & Lindqvist M (2011): Quantifying variation and chemical correlates of bladderwrack quality - Herbivore population makes a difference. -Functional Ecology 25: 900–909 (link)

Korpinen S, Jormalainen V & Pettay E (2010): Nutrient availability modifies species abundance and community structure of Fucus-associated littoral benthic fauna. -Marine Environmental Research 70: 283-292 (link)

Haavisto F, Välikangas T & Jormalainen V (2010): Induced resistance in a brown alga: phlorotannis, genotypic variation and fitness costs for the crustacean herbivore. -Oecologia 162: 685-695 (link)
Vesakoski O, Rautanen J, Jormalainen V & Ramsay T (2009): Divergence in host use ability of a marine herbivore from two habitat types. -Journal of Evolutionary Biology 22:1545-1555 (link)

Jormalainen V & Ramsay T (2009): Resistance of the brown alga Fucus vesiculosus to herbivory. -Oikos 118: 713-722 (link)

Vesakoski O, Boström C, Ramsay T & Jormalainen V (2008): Sexual and local divergence in host exploitation in the marine herbivore Idotea baltica (Isopoda). -Journal of Experimental Marine Biology and Ecology 367: 118-126. (link)

Vesakoski O, Merilaita S,  Jormalainen V (2008): Reckless males, rational females: Dynamic trade-off between food and shelter in the marine isopod Idotea baltica. -Behavioural Processes 79: 175-181 (link)

Jormalainen V, Honkanen T & Vesakoski O (2008): Geographical divergence in host use ability of a marine herbivore in alga-grazer interaction. -Evolutionary Ecology 22: 545-559

Jormalainen V & Honkanen T (2008): Macroalgal chemical defenses and their roles in structuring temperate marine communities. In “Algal Chemical Ecology”. Edited by Charles D. Amsler. Springer. (link)

Koivikko R, Eränen J, Loponen J & Jormalainen V (2008): Variation of phlorotannins among three populations of
Fucus vesiculosus as revealed by HPLC and colorimetric quantification. - Journal of Chemical Ecology 34: 57-64 (pdf file)

Jormalainen V, Wikström SA & Honkanen T (2008): Fouling mediates grazing - Intertwining of resistances to multiple enemies in the brown alga Fucus vesiculosus. – Oecologia 155: 559-569. (link)

Korpinen S & Jormalainen V (2008) Grazing and nutrients reduce recruitment success of Fucus vesiculosus L. (Fucales: Phaeophyceae). –Estuarine, Coastal and Shelf Science 78: 437-444. (link)

Korpinen S, Jormalainen V, Ikonen J (2008): Selective consumption and facilitation by mesograzers in adult and colonizing macroalgal assemblages. -Marine Biology 154: 787-794. (link)

Korpinen S, Jormalainen V (2008): Grazing effects in macroalgal communities depend on timing of patch colonization. - Journal of Experimental Marine Biology and Ecology 360: 39-46. (link)

Jormalainen V (2007): Mating strategies in isopods - From mate monopolization to conflicts. Pp. 167-190 in “Evolutionary ecology of social and sexual systems: Crustaceans as model organisms”. Edited by JE Duffy and M Thiel. Oxford University Press, New York. (link)

Korpinen S, Jormalainen V & Honkanen T (2007): Effects of nutrients, herbivory, and depth on the macroalgal community in the rocky sublittoral -Ecology 88: 839-852 (pdf file).

Korpinen S, Jormalainen V & Honkanen T (2007): Bottom-up and cascading top-down control of macroalgae along depth gradient. -Journal of Experimental Marine Biology and Ecology 343: 52-63. (pdf file)

Korpinen S, Honkanen T, Vesakoski O, Hemmi A,  Koivikko R, Loponen J & Jormalainen V (2007): Macroalgal communities face the challenge of changing biotic interactions - Review with focus on the Baltic Sea. -AMBIO 36: 203-211. (pdf file)

Koivikko R, Loponen J, Pihlaja K & Jormalainen V (2007): High-performance liquid chromatographic analysis of phlorotannins from the brown alga Fucus vesiculosus. -Phytochemical Analysis 18: 326-332.

Benesh D, Valtonen T & Jormalainen V (2007): Reduced survival associated with precopulatory mate guarding in male Asellus aquaticus (Isopoda).  -Annales Zoologici Fennici  44: 425-434. (pdf file)

Koivikko R, Loponen J, Honkanen T & Jormalainen V (2005): Contents of soluble, cell-wall-bound and exuded phlorotannnins in the brown alga Fucus vesiculosus, with implications on their ecological functions. -Journal of Chemical Ecology 31: 195-212. (pdf file)

Jormalainen V, Honkanen T, Vesakoski O & Koivikko R (2005): Polar extracts of the brown alga Fucus vesiculosus (L.) reduce assimilation efficiency but do not deter the herbivorous isopod Idotea baltica (Pallas). - Journal of Experimental Marine Biology and Ecology 317: 143-157. (pdf file)

Hemmi A, Mäkinen A, Jormalainen V & Honkanen T (2005): Responses of growth and phlorotannins in Fucus vesiculosus to nutrient enrichment and herbivory. -Aquatic Ecology 39: 201-211. (pdf file)

Honkanen T & Jormalainen V (2005): Genotypic variation in tolerance and resistance to fouling in the brown alga Fucus vesiculosus. -Oecologia 144: 196-205. (pdf file)

Jormalainen V & Honkanen T (2004): Variation in natural selection for growth and phlorotannins in the brown alga Fucus vesiculosus -Journal of  Evolutionary Biology 17: 807-820.  (pdf file)

Hemmi A, Honkanen T & Jormalainen V (2004): Inducible resistance to herbivory in Fucus vesiculosus – duration, spreading and variation with nutrient availability. -Marine Ecology Progress Series 273: 109-120. (pdf file)

Hemmi A & Jormalainen V (2004): Genetic and environmental variation in performance of a marine isopod: Effects of eutrophication. -Oecologia 140: 302-311. (pdf file)

Hemmi A & Jormalainen V (2004): Geographic covariation of chemical quality of the host alga Fucus vesiculosus with fitness of the herbivorous isopod Idotea baltica. -Marine Biology 145: 759-768. (pdf file)

Jormalainen V, Honkanen T, Koivikko R & Eränen J (2003)  Induction of phlorotannin production in a brown alga: Defense or resource dynamics? -Oikos 103: 640-650. (pdf file)

Hemmi, A & Jormalainen, V (2002) Nutrient enhancement increases fecundity and growth of a marine herbivore via quality of its food alga. -Ecology 83: 1052-1064. (pdf file)

Honkanen T, Jormalainen V, Hemmi A, Mäkinen A & Heikkilä N (2002) Feeding and growth of the isopod Idotea baltica on the brown alga Fucus vesiculosus: roles of inter-population and within-plant variation in plant quality. -Ecoscience 9: 332-338.

Honkanen T & Jormalainen V (2002) Within-plant integration and compensation: effects of simulated herbivory on growth and reproduction of the brown alga, Fucus vesiculosus. - International Journal of Plant Science 163: 815-823. (pdf file)

Jormalainen V, Honkanen T & Heikkilä N (2001) Feeding preferences and performance of a marine isopod on seaweed hosts – cost of habitat specialization -Marine Ecology Progress Series 220: 219-230. (pdf file)

Härdling R, Smith HG, Jormalainen V, Tuomi, J (2001) Resolution of evolutionary conflicts: Costly behaviors enforce the evolution of cost-free compromises. -Evolutionary Ecology Research 3: 829-844. (pdf file)

Jormalainen V, Honkanen T, Mäkinen A, Hemmi A & Vesakoski O (2001) Why does herbivore sex matter? Sexual differences in utilization of Fucus vesiculosus by the isopod Idotea baltica.-Oikos 93: 77-86. (pdf file)

Jormalainen V, Merilaita S & Riihimäki J (2001) Costs of intersexual conflict in the isopod Idotea baltica . -Journal of Evolutionary Biology  14: 763-772. (pdf file)

Merilaita S & Jormalainen V (2000) Different roles of feeding and protection in diel microhabitat choice of sexes in Idotea baltica. -Oecologia 122: 445-451. (pdf file)

Jormalainen V, Merilaita S & Härdling R (2000) Dynamics of intersexual conflict over precopulatory mate-guarding in two populations of the isopod Idotea baltica. -Animal Behaviour 60: 85-93. (pdf file)

Jormalainen V, Shuster S & Wildey H (1999) Reproductive anatomy, precopulatory mate guarding, and paternity in the Socorro Isopod, Thermosphaeroma thermophilum. -Marine and Freshwater Behavior and Physiology 32: 39-56. Abstract

Jormalainen V & Shuster S (1999) Female reproductive cycle and sexual conflict over precopulatory mate-guarding in Thermosphaeroma isopods. -Ethology 105: 233-246. (pdf file)

Merilaita S, Tuomi J & Jormalainen V (1999) Optimisation of cryptic colorations in heterogenous habitats -Biological Journal of the Linnean Society 67: 151-161. (pdf file)

Härdling R, Jormalainen V & Tuomi J (1999) Fighting costs stabilize aggressive behavior in intersexual conflicts. -Evolutionary Ecology 13: 245-265. (pdf file)

Jormalainen V (1998) Precopulatory mate guarding in crustaceans - Male competitive strategy and intersexual conflict. -Quarterly Review of Biology 73: 275-304. Link to article