MacLeod AK, Orr KK, Greenhill L, Burrows M. 2014. Understanding the potential effects of wave energy devices on kelp biotopes, Scottish Association for Marine science, Scottish Natural Heritage Commissioned Report. 

Orr KK. 2014. Floating Seaweed (Sargassum). In:Laffoley, D., Baxter, J. M., Thevenon, F. and Oliver, J. (editors). 2014. The significance and management of natural carbon stores in the open ocean. Gland, Switzerland: IUCN. 124p.

 Orr KK. 2014. Diatoms: In:Laffoley, D., Baxter, J. M., Thevenon, F. and Oliver, J. (editors). 2014. The significance and management of natural carbon stores in the open ocean. Gland, Switzerland: IUCN. 124p. 

 Orr KK, Wilding TA, Horstmeyer L, Weigl S, Heymans JJ. 2013. Detached macroalgae: its importance to inshore sandy beach fauna. Estuarine and Coastal Shelf Science. In Press 

Hughes A, Black KD, Campbell I, Heymans JJ, Orr KK, Stanley MS and Kelly MS. 2013. Comments on ‘Prospects for the use of macroalgae for fuel in Ireland and UK: An overview of marine management issues. Marine Policy: 38, 664 - 666

Burrows MT, Macleod M and Orr KK. 2010. Mapping the intertidal seaweed resources of the Outer Hebrides. Scottish Association for Marine Science Internal Report No. 269. 45 pp. 

Clark BM, Orr KK, Angel A, Hutchings K, Steffani N and Turpie J. 2010 & 2009. State of the Bay 2009: Saldanha Bay and Langebaan Lagoon. Report prepared for Saldanha Bay Water Quality Trust. Anchor Environmental Consultants, Cape Town, South Africa.

Orr KK, Burgess J, Froneman PW. 2007. The effects of increased freshwater inflow on metal enrichment in selected Eastern Cape estuaries, South Africa. Water SA: 34, 39 - 52. 

Kaiser H, Brill GC, Cahill J, Collett P, Czypionka K, Greene A, Orr KK, Pattrick P, Scheepers T, Stonier T, Whitehead A and Yearsley R (2006) Testing clove oil as an anaesthetic for long-distance transport of live fish: the case of the Lake Victoria cichlid Haplochromis obliquidens. Journal of Applied Ichthyology: 22, 510–514. 

Orr KK. 2007. Spatial and temporal variations in metals in the sediment and water of selected Eastern Cape estuaries, South Africa. MSc thesis, Rhodes University, November 2007. 

Selected Presentations at Scientific Meetings

Orr KK, Heymans SJ, Wilding T (2012) Predicting the ecosystem effects of harvesting beach-cast seaweed for biofuel: a field based approach combined with food-web modelling. VI International Sandy Beach Symposium, Mpekweni, South Africa, 23-28 June 2012. (Awarded best student presentation). 

Orr KK, Heymans SJ, Wilding T and Hughes D (2011). Beach-cast seaweed for biofuel in Scotland – ecological considerations, At: Present and Potential uses of Algae – A Cooperation Event. Trelleborg, Sweden, 29-29 September 2011. 

Orr KK, Burgess J and Froneman PW (2007) The effects of mouth phase and rainfall on the concentrations of heavy metals in the sediment and water of select Eastern Cape estuaries, South Africa. In: the 5th International Conference on Marine Pollution and Ecotoxicology. City University of Hong Kong, Hong Kong, China, June 3rd – 6th 2007. 

Posters at Scientific Meetings

Orr KK, Heymans SJ, Wilding T (2012) Floating in the surf: the role of detached macroalgae in structuring macrofaunal communities, VI International Sandy Beach Symposium, Mpekweni, South Africa, 23-28 June 2012. 

Orr KK, Heymans SJ, Wilding T and Hughes D (2011) Life with and without seaweed on the sandy beaches of the Outer Hebrides – an ecological spatial comparison, Marine Alliance for Science and Technology (MASTS) Annual Science Meeting, Herriot Watt, Edinburgh, 22-24 August 2011.