Pekka Niemelä
- Frederick II of Hohenstaufen's Australasian Cockatoo: Symbol of Detente between East and West and Evidence of the Ayyubids' Global Reach (2018)
- Parergon
- Local adaptations and phenotypic plasticity may render gypsy moth and nun moth future pests in northern European boreal forests (2018)
- Canadian Journal of Forest Research
- Pedanios Dioskorides - De Materia Medica (2018) Farmakologia ja toksikologia Koulu M., Örmä S., Niemelä P.
- Evidence for geographic substructuring of mtDNA variation in the East European Hermit beetle (Osmoderma barnabita)Lady with an "ermine" (2017)
- Nature ConservationSource-Notes in the History of Art
- Kuulumisia Petsamon ympäristöongelmien nykytilasta (2017)
- Raito: maakunnallinen museolehti
- Leaf pseudo-variegation: Definition, common types, and probably the defended models for real defensive leaf variegation mimicking them? (2017)
- Flora
- Nainen ja "kärppä" (2017)
- Roma : Villa Lanten ystävien vuosikirja
- Vaelluksia maisemaan: Taiteen mestarit meren äärellä (2017) Markku Valkonen, Pekka Niemelä
- Impacts of simulated drought stress and artificial damage on concentrations of flavonoids in Jatropha curcas (L.), a biofuel shrub (2016)
- Journal of Plant Research
- (2016)



