Photo: Nelson Valdivia
Department of Arctic and Marine Biology markus.molis@uit.no +4777660293 Tromsø NFH C 271

Markus Molis

Professor for Coastal Arctic Ecology

Job description

Professor for Arctic Coastal Ecology

Publications outside Cristin

Molis M, R Hill, O Hüppop, L Bach, T Coppack, S Pelletier, T Dittman, A Schulz (2019) Measuring bird and bat collision and avoidance. In: M Perrow (Ed.) Wildlife and Wind Farms, Offshore: Monitoring and Mitigation. Pelagic Publishing
Bischof K, C Buschbaum, S Fredriksen, FJL Gordillo, S Heinrich, C Jiménez, C Lütz, M Molis, MY Roleda, M Schwanitz, C Wiencke (2019) Kelps and environmental changes in the Kongsfjord ecosystem: From stress perception to community responses. Adv Polar Ecol (in press)
Molis M, Laudien J, Beuchel F, Wlado-Karlowska M, Buschbaum C (2019) Ecological drivers of and responses by Arctic benthic communities, with an emphasis on Kongsfjorden, Svalbard. Adv  Polar Ecol (in press)
Franz M, FR Barboza, HH Hinrichsen, A Lehmann, M Scotti, C Hiebenthal, M Molis, R Schutt, M Wahl (2018) Long-term records of hard-bottom communities in the southwestern Baltic Sea reveal the decline of a foundation species. Est Coast Shelf Sci 219:242-252
Martinez-Crego B, P Arteaga, A Ueber, AH Engelen, R Santon, M Molis (2016) Specificity in mesograzer-induced defences in seagrasses. PLoS ONE 10(10): e0141219
Petrowski S, K Schachtl, M Molis, C Buschbaum (2016) Do bioturbation and consumption affect shallow Arctic marine soft-bottom communities? Polar Biol 39(11):2141-2153
Petrowski S, M Moils, A Bender, C Buschbaum (2016) Effects of continuous and sporadic presence of kelp thalli on Arctic marine soft bottom assemblage structure and diversity. Polar Biol 39(11):2131-2140
Cusson M, Crowe TP, Araújo R, Arenas F, Aspden R, Bulleri F, Davoult D, Dyson K, Fraschetti S, Herkül K, Hubas C, Jenkins S, Kotta J, Kraufvelin P, Migné A, Molis M, Mulholland O, Noël L M.-L J, Paterson DM, Saunders J, Somerfield PJ, Sousa-Pinto I, Spilmont N, Terlizzi A, Benedetti-Cecchi L (2015) Relationships between biodiversity and the stability of marine ecosystems: comparisons at a European scale using meta-analysis. J Sea Res 98:5-14
Ellrich J, RA Scrosati, M Molis (2015) Predator non-consumptive effects on prey recruitment weaken with recruit density. Ecology 96(3):611-616
Molis M, RA Scrosati, EF El-Belely, T Lesniowski, M Wahl (2015) Wave-induced changes in seaweed toughness entail plastic modifications in snail traits maintaining consumption efficacy. J Ecol 103(4):851–859
Wahl M, M Molis, AJ Hobday, S Dudgeon, R Neumann, P Steinberg, AH Campbell, E Marzinelli, S Connell (2015) Global through local environmental change and the responses of brown macroalgae: direct and ecologically mediated effects. Perspec Phycol 2(1):11-30
Ellrich, JA, RA Scrosati, C Bertolini, M Molis (2015) A predator has nonconsumptive effects on different life-history stages of a prey. Mar Biol 163:5
Ellrich J, RA Scrosati, K Romoth, M Molis (2015) Adult prey neutralizes predator non-consumptive limitation of prey recruitment PLoS ONE 11(4): e0154572
Flöthe CR, M Molis, U John (2014) Induced resistance to periwinkle grazing in the brown seaweed Fucus vesiculosus (Phaeophyceae): molecular mechanisms and seaweed-mediated effects on herbivore interactions. J Phycol 50:564-576
Flöthe CR, M Molis, I Kruse, F Weinberger, U John (2014) Molecular support for temporal dynamics of induced anti-herbivory defences in the brown seaweed Fucus vesiculosus. Eur J Phycol 49(3):356-369
Flöthe CR, U John, M Molis (2014) Comparing the relative importance of water-borne cues and direct grazing for the induction of defenses in the brown seaweed Fucus vesiculosus. PLoS ONE 9(10):e109247
Flöthe CR & M Molis (2013) Temporal dynamics of inducible anti-herbivory defenses in the brown seaweed Ascophyllum nodosum (Phaeophyceae). J Phycol 49(3):468-474
Zwerschke N, M Bollen, M Molis, Scrosati, RA (2013) An environmental stress model correctly predicts unimodal trends in overall species richness and diversity along intertidal elevation gradients. Helgol Mar Res 67(4):663-674
Crowe T, M Cusson, F Bulleri, D Davoult, F Arenas, R Aspden, L Benedetti-Cecchi, S Bevilacqua, I Davidson, E Defew, S Fraschetti, C Golléty, JN Griffin, K Herkül, J Kotta, A Migné, M Molis, SK Nicol, LM-LJ Noël, I Sousa Pinto, N Valdivia, SR Jenkins (2013) Large-scale variation in combined impacts of canopy loss and disturbance on community structure and ecosystem functioning. PLoS ONE 8(6): e66238. doi:10.1371/journal.pone.0066238
Beermann A, J Ellrich, M Molis, RA Scrosati (2013) Effects of seaweed canopies and adult barnacles on barnacle recruitment: the interplay of positive and negative influences. J Exp Mar Biol Ecol 448:162-170
Johnston B, M Molis, RA Scrosati (2012) Predation risk cues affect prey feeding activity differently in barnacle juveniles and adults. Can J Zool 90:128-132
Bulleri F, L Benedetti-Cecchi, M Cusson, F Arenas, R Aspden, I Bertocci, T P Crowe, D Davoult, B K Eriksson, S Fraschetti, C Golléty, J Griffin, S R Jenkins, J Kotta, P Kraufvelin, E Maggi, M Molis, I  Sousa Pinto, A Terlizzi, N Valdivia, D M Paterson (2012) The stability of European rocky shore assemblages: variation across a latitudinal gradient and the role of canopy-forming macroalgae. Oikos 121(11):1801-1809
Yun HY, M Molis (2012) Comparing the ability of a native and a non-indigenous seaweed to induce anti-herbivory defenses. Mar Biol 159(7):1475-1484
Valdivia N, C Golléty, A Migné, D Davoult, M Molis (2012) Stressed but stable: Canopy loss decreased species synchrony and metabolic variability in an intertidal hard-bottom community. PLoS ONE 7(5):e36541
Yun HY, AH Engelen, RO Santos, M Molis (2012) Water-borne cues of a non-indigenous seaweed mediate grazer-deterrent responses in native seaweeds, but not vice versa. PLoS ONE 7(6):e38804
Scrosati, RA, AS Knox, N Valdivia, M Molis (2011) Testing predictions on species richness and diversity from an environmental stress model using NE Atlantic rocky intertidal elevation gradients. Helgol Mar Res 65:91-102
Fricke A, M Molis, C Wiencke, N Valdivia, AS Chapman (2011) Effects of UV radiation on structure and diversity of Arctic macrobenthic communities. Polar Biol 34(7):995-1009
Molis M, I Preuss, A Firmenich, J Ellrich (2011) Predation risk indirectly enhances survival of seaweed recruits but not intra-specific competition in an intermediate herbivore species. J Ecol 99(3):807-817
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, Olson JL (2011) Stress ecology in Fucus: Abiotic, biotic, and genetic interactions. In: Adv Mar Biol (Ed. M Lesser), Oxford, Academic Press 59:27-106
Wahl M, et al. (2011) Species Richness Matters Little for the Stability of Stressed Communities: a Global Experiment. PLoS ONE 6(5):e19514
Valdivia N, RA Scrosati, M Molis, AS Knox (2011) Variation in community structure across vertical intertidal stress gradients: how does it compare with horizontal variation at different scales? PLoS ONE 6(8):e24062
Molis M, A Enge, U Karsten (2010). Grazing impact of and indirect interactions among kelp (Laminaria digitata)-associated mesograzers. J Phycol 46(1):76-84
Pfaff MC, C Hiebenthal, M Molis, GM Branch, M Wahl (2010) Patterns of diversity along experimental gradients of disturbance and nutrient supply - the confounding assumptions of the Intermediate Disturbance Hypothesis. African J Mar Sci 32(1):127-135
Yun, HY, S Rohde, K Linnane, M Wahl, M Molis (2010). Seaweed-mediated indirect interactions between two species of meso-herbivores. Mar Ecol-Prog Ser 408:47-53
Eschweiler N, M Molis, C Buschbaum (2009) Habitat-specific size structure variation in periwinkle populations (Littorina littorea) caused by biotic drivers. Helgol Mar Res 63:119-127
Molis M & M Wahl (2009) Comparison of the impacts of consumers, ambient UV, and future UVB irradiance on macro-epibenthic assemblages. Global Change Biol 15:1833-1845
Valdivia N, de la Haye KL, Jenkins SR, Kimmance SA, Thompson RC, Molis M (2009) Functional composition, but not richness, affected the performance of sessile suspension-feeding assemblages. J Sea Res 61:216-221
Campana G, Zacher K, Fricke A, Molis M, Wulff A, Quartino ML, Wiencke C (2009) Drivers of colonization and succession in polar benthic macro- and microalgal communities. Bot Mar 52:655-667
Molis M, BAP da Gama (2009). Simple and complex interactions. In: M Wahl (Ed.) Marine Hard-Bottom Communities. Springer Verlag, p. 225-237
Bartsch I, C Wiencke, K Bischof, CM Buchholz, BH Buck, A Eggert, P Feuerpfeil, D Hanelt, S Jacobsen, R Karez, U Karsten, M Molis, MY Roleda, H Schubert, R Schumann, K Valentin, F Weinberger & J Wiese (2008) The genus Laminaria sensu lato: recent insights and developments. Eur J Phycol 43 (1):1-86
Canning-Clode J, M Kruse, M Kaufmann, M Lenz, M Molis & M Wahl (2008) Influence of disturbance and nutrient enrichment on early successional biofouling communities in an oligotrophic marine system. Mar Ecol 29:115-124
Canning Clode J, N Valdivia, J Thomason, M Molis, M Wahl (2008) Regional richness assessment in marine benthic communities: quantifying the error using large data-sets from different habitats. Limnol Oceanogr Methods 6:580-590
Fricke A, M Molis, C Wiencke, N Valdivia & A Chapman (2008) Natural succession in different water depths and disturbance of macroalgal communities after transplantation from deep to shallow water on Spitsbergen. Polar Biol 31(10):1191-1203
Molis  M, J Körner, Y-W Ko & JH Kim (2008) Specificity of inducible seaweed anti-herbivory defences depends on identity of macroalgae and herbivores. Mar Ecol-Prog Ser 354:97-105
Sudgen H, M Lenz, M Molis, M Wahl & JC Thomason (2008) Experimental investigation into the influence of nutrient enrichment on the intermediate disturbance hypothesis in marine communities. J Animal Ecol 77 (1):24-31 
Valdivia N, M Molis (2008) Observational evidence of a negative biodiversity-stability relationship in intertidal epibenthic communities. Aquat Biol 4(3):263-271
Valdivia, N, JD Stehbens, B Hermelink, SD Connell, M Molis & M Wahl ((2008) Disturbance mediates the effects of nutrients on developing assemblages of epibiota. Austral Ecol 33(8):951-962
Wollgast S, M Lenz, M Wahl & M Molis (2008) Effects of a temporally variable disturbance regime on the diversity, species composition, and ecosystem function of subtidal macrobenthic assemblages. Helgol Mar Res 62(4):309-319 
Svennson R, M Siccha, M Lundgren, H Pavia, M Lenz, M Molis & M Wahl (2007) Maximum species richness at intermediate frequencies of disturbance frequency: consistency among levels of productivity. Ecology 88(4):830-838
Yun, HY, Cruz J, Treitschke M, M Molis & M Wahl (2007) Testing for the induction of anti-herbivory defences in four Portuguese macroalgae by direct and water-borne cues of grazing amphipods. Helgol Mar Res 61 (3):203-209
Zacher K, A Wulff, M Molis, D Hanelt & C Wiencke (2007) Ultraviolet radiation and consumer effects on a field-grown intertidal macroalgal assemblage in Antarctica. Global Change Biol 13:1201-1215 
Bischof K, M Molis (2006). Wälder unter Wasser – Großalgengemeinschaften. In: Hempel G, Hempel I, Schiel S (eds). Leben im Meer - ein ökologisches Lesebuch. Verlag H. M. Hausschild GmbH, Bremen, pp 222-228
Bischof K, I Gomez, M Molis, D Hanelt, U Karsten, U Lüder, MY Roleda, K Zacher & C Wiencke (2006) Ultraviolet radiation shapes seaweed communities. Rev Envir Sci Bio-Tech 5:141-166
Contardo Jara V, JHS Myamoto, BAP da Gama, M Molis, M Wahl & RC Pereira (2006) Limited evidence of interactive disturbance and nutrient effects on the diversity of macrobenthic assemblages. Mar Ecol-Prog Ser 308: 37-48
Diaz E, C Güldenzoph, C McQuaid, M Molis & M Wahl (2006) Variability in grazer-mediated defensive responses of green and red macroalgae on the south coast of South Africa. Mar Biol 149 (6): 1301-1311
Molis  M, J Körner, Y-W Ko, JH Kim, & M Wahl (2006) Inducible responses in the brown seaweed Ecklonia cava: the role of grazer identity and season. J Ecol 94(1): 243-249
Wessels H, W Hagen, M Molis, C Wiencke & U Karsten (2006) Intra- and interspecific differences in food quality of Arctic macroalgae from Kongsfjorden (Spitsbergen) for two benthic sympatric invertebrates. J Exp Mar Biol Ecol 329: 20-33 
Che J, M Molis, T Dzeha & M Wahl (2005) Herbivore induced defenses in macroalgae on the Kenyan coast. J Phycol 41: 726-731
Macaya E, E Rothäusler, M Thiel, M Molis & M Wahl (2005) Induction of defences and within-plant variation on palatability in two brown algae from the northern-central coast of Chile: effects of mesograzers and UV radiation. J Exp Mar Biol Ecol 325: 214-227
Rothäusler E, EC Macaya, M Molis, M Wahl & M Thiel (2005) Laboratory experiments examining inducible defense show variable responses of temperate brown and red macroalgae Rev Chil Hist Nat 78(4): 603-614
Valdivia N, A Heidemann, M Thiel, M Molis & M Wahl (2005) Disturbance and diversity in hard-bottom macrobenthic communities at the coast of Chile. Mar Ecol-Prog Ser 299:45-54
Lenz M, M Molis & M Wahl (2004) Experimental test of the intermediate disturbance hypothesis: Frequency effects of emersion on fouling communities. J Exp Mar Biol Ecol 305: 247-266
Lenz M, M Molis & M Wahl (2004) Experimental test of the intermediate disturbance hypothesis: response of fouling communities to various levels of emersion intensity. Mar Ecol-Prog Ser 278:53-65
Molis M & M Wahl (2004) Transient effects of solar ultraviolet radiation on macrobenthic community diversity at Lüderitz, Namibia. J Exp Mar Biol Ecol 302: 51-62
Rohde S, M Molis & M Wahl (2004) Regulation of anti-herbivore defence by Fucus vesiculosus in response to various cues. J Ecol 92:1011-1018
Wahl M, M Molis A Davis, S Dobretsov, ST Dürr, J Johansson, J Kinley, D Kirugara, M Langer, HK Lotze, M Thiel, J Thomason, B Worm & D Zeevi Ben-Yosef (2004) UVR effects that come and go: marine epibenthic community level impacts in a global comparison. Global Change Biol 10:1962-1972
Weidner K, BG Lages, BAP da Gama, M Molis, M Wahl & RC Pereira (2004) Effects of mesograzers and nutrient levels on the induction of defenses in several Brazilian macroalgae. Mar Ecol-Prog Ser 283:113-125
Molis M, M Lenz & M Wahl (2003) Radiation effects along an UVB gradient on species composition and diversity of a shallow-water macrobenthic community in the western Baltic. Mar Ecol Prog Ser 263: 113-125
Lotze HK, B Worm, M Molis & M Wahl (2002) Effects of UV radiation and consumers on recruitment and succession of a marine macrobenthic community. Mar Ecol-Prog Ser 243: 57-66.

Research interests

I am working in intertidal and shallow subtidal (max. 20 m) habitats. The main objective of my research is to gain a mechanistic understanding on how environmental drivers modify species interactions in benthic near-shore systems. I do so by setting up manipulative experiments in the field, but also under more controlled environmental conditions in the lab. My field sites are in Kongsfjorden (Svalbard) and along the rocky and sedimentary shores of Tromsø. The organisms included in my studies range from seaweeds to sessile invertebrates to mobile benthic invertebrates. I am interested in chemically-mediated trophic interactions which often but not exclusively spur my research interest. Current research includes

diversity of arctic intertidal communities
the role of phenotypic plasticity in species interactions
non-consumptive predator effects
impact of grazers on photoautotrophs


BIO-1104 Zoology (spring)

BIO-2017 Økology (spring and autumn)