A full list of publications can be found on my Google Scholar page. Feel free to email me to request copies any of these articles.

JOURNAL ARTICLES

• Hagan JG, Gamfeldt L, Brophy C, Fanin N, Gamfeldt L, Hautier Y, Manning P, Meyer S, Slade E, Rogier F (in prep.). A guide to quantifying multifunctionality in ecology, conservation and ecosystem management.

• Hagan JG, Bergmann R, Snoeks J, Dolmans V, Vanschoenwinkel B (in prep). InvTraitR: Improving biomass estimations for freshwater invertebrates using taxonomic backbones and habitat similarity. Manuscript and R-package.

• Hagan JG (2023). Compensation alters estimates of the number of species required to maintain ecosystem functioning across an emersion gradient: A case study with intertidal macroalgae. Functional Ecology Early view.

• Hagan JG, Henn JJ, Osterman WHA (2022). Matters Arising: Plant traits alone are good predictors of ecosystem properties when used carefully. Nature Ecology and Evolution 7. Response to: van der Plas et al. (2020, Nature Ecology and Evolution).

• Hagan JG, Schrofner-Brunner B, Gamfeldt L (2023, preprint). Quantifying biodiversity effects on ecosystem functioning across space and time in natural and semi-natural ecosystems. ResearchSquare.

• Gould E, … Hagan JG, et al. (2023, preprint). Same data, different analysts: variation in effect sizes due to analytical decisions in ecology and evolutionary biology. EcoEvoRxiv.

• Gamfeldt L, Hagan JG, Farewell A, Palm M, Warringer J, Roger F. (2023). Scaling-up the biodiversity–ecosystem functioning relationship: the effect of environmental heterogeneity on transgressive overyielding. Oikos 2023: e09652.

• Scrofner-Brunner B, Hagan JG, Cappelatti L, Hassellöv J, Wißmann M, Gamfeldt L (2023). Macroalgae maintain growth outside their observed distributions: Implications for biodiversity-ecosystem functioning at landscape scales. Journal of Ecology 111: 1362-1373.

• Hagan JG, Gamfeldt L, Vanschoenwinkel BJ (2021). We should not necessarily expect positive relationships between biodiversity and ecosystem functioning in observational field data. Ecology Letters 24 (12), 2537-2548.

• Bushke FT, Hagan JG, Santini S, Coetzee BWT (2021). Random population fluctuations bias the Living Planet Index. Nature Ecology and Evolution 5: 1145–1152.

• Olofsson M, Hagan JG, Karlson B, Gamfeldt L (2020). Large seasonal and spatial variation in nano- and microphytoplankton diversity along a Baltic Sea—North Sea salinity gradient. Scientific Reports 10: 17666.

• Joseph GS, Seymour CL, Coetzee BW, Ndlovu M, Deng L, Fowler K, Hagan JG, Brooks BJ, Seminara JA, Foord SH. (2018). Elephants, termites and mound thermoregulation in a progressively warmer world. Landscape Ecology 33: 731-742.

• Hagan JG, Du Toit JCO, Cramer MD. (2017). Long-term livestock grazing influences the recruitment success of epigeal termites: Insights from >75-year grazing experiment in the Karoo, South Africa. African Journal of Range and Forage Science 34: 123-132.
  
  

BOOK CHAPTERS

• Luypaert T, Hagan JG, McCarthy ML, Poti M. (2020). Status of marine biodiversity in the Anthropocene. In: YOUMARES9 – A Conference from and for YOUng MARine RESearchers. Leibich V, Bode M, Jungblut S (eds). Springer International Publishing.
  
  

SCIENCE COMMUNICATION

• Sanden O with expert commentary from Hagan JG (2022). Ny studie i Science: Klimatkrisen kan orsaka massdöd till havs. Syre.

• Hagan JG, Cramer MD (2018). Termites and grazers: a complex, subtle relationship. Farmer’s Weekly.