Research/Scholarly/Creative Works

Journal Articles

• Van Etten ML., Tate JA., Anderson SH., Kelly D., Ladley JJ., Merrett MF., Peterson PG. and Robertson AW. (2015) The compounding effects of high pollen limitation, selfing rates and inbreeding depression leave a New Zealand tree with few viable offspring. Annals of Botany 116(5): 833-843. http://dx.doi.org/10.1093/aob/mcv118.

• Hoover SER., Ladley JJ., Shchepetkina AA., Tisch M., Gieseg SP. and Tylianakis JM. (2012) Warming, CO2, and nitrogen deposition interactively affect a plant-pollinator mutualism. Ecology Letters 15(3): 227-234. http://dx.doi.org/10.1111/j.1461-0248.2011.01729.x.

• Anderson SH., Kelly D., Ladley JJ., Molloy S. and Terry J. (2011) Cascading effects of bird functional extinction reduce pollination and plant density. Science 331(6020): 1068-1071. http://dx.doi.org/10.1126/science.1199092.

• Robertson AW., Kelly D. and Ladley JJ. (2011) Futile selfing in the trees Fuchsia excorticata (Onagraceae) and Sophora microphylla (Fabaceae): inbreeding depression over 11 years. International Journal of Plant Sciences 172(2): 191-198. http://dx.doi.org/10.1086/657678.

• Kelly D., Ladley JJ., Robertson AW., Anderson SH., Wotton DM. and Wiser SK. (2010) Mutualisms with the wreckage of an avifauna: the status of bird pollination and fruit dispersal in New Zealand. New Zealand Journal of Ecology 34(1): 66-85.

• Sullivan JJ., Kelly D. and Ladley JJ. (2010) Feathers to Fur: The Status of New Zealand Ecological Research in 2009. New Zealand Journal of Ecology 34(1): 1-5.

• Kelly D., Ladley JJ., Robertson AW. and Crowfoot L. (2008) Flower predation by Zelleria maculata (Lepidoptera) on Peraxilla mistletoes: effects of latitude and fragmentation, and impact on fruit set. New Zealand Journal of Ecology 32(2): 186-196.

• Robertson AW., Ladley JJ. and Kelly D. (2008) Does height off the ground affect bird visitation and fruit set in the pollen-limited mistletoe Peraxilla tetrapetala (Loranthaceae)? Biotropica 40(1): 122-126. http://dx.doi.org/10.1111/j.1744-7429.2007.00329.x.

• Robertson AW., Ladley JJ., Kelly D., McNutt KL., Peterson PG., Merrett MF. and Karl BJ. (2008) Assessing pollination and fruit dispersal in Fuchsia excorticata (Onagraceae). New Zealand Journal of Botany 46(3): 299-314.

• Wotton DM. and Ladley JJ. (2008) Fruit size preference in the New Zealand pigeon (Hemiphaga novaeseelandiae). Austral Ecology 33: 341-347.

• Kelly D., Ladley JJ. and Robertson AW. (2007) Is the pollen limited mistletoe Peraxilla tetrapetala (Loranthaceae) also seed limited? Austral Ecology 32: 850-857. http://dx.doi.org/10.1111/j.1442-9993.2007.01765.x.

• Burgess VJ., Kelly D., Robertson AW. and Ladley JJ. (2006) Positive effects of forest edges on plant reproduction: literature review and a case study of bee visitation to flowers of Peraxilla tetrapetala (Loranthaceae). New Zealand Journal of Ecology 30(2): 179-190.

• Robertson AW., Trass A., Ladley JJ. and Kelly D. (2006) Assessing the benefits of frugivory for seed germination: the importance of the deinhibition effect. Functional Ecology 20(1): 58-66. http://dx.doi.org/10.1111/j.1365-2435.2005.01057.x.

• Kelly D., Brindle C., Ladley JJ., Robertson AW., Maddigan FW., Butler J., Ward-Smith T., Murphy DJ. and Sessions LA. (2005) Can stoat (Mustela erminea) trapping increase bellbird (Anthornis melanura) populations and benefit mistletoe (Peraxilla tetrapetala) pollination? New Zealand Journal of Ecology 29: 69-82.

• Robertson AW., Ladley JJ. and Kelly D. (2005) The effectiveness of short-tongued bees as pollinators of apparently "ornithophilous" New Zealand mistletoes. Austral Ecology 30: 298-309.

• Kelly D., Ladley JJ. and Robertson AW. (2004) Is dispersal easier than pollination? Two tests in New Zealand Loranthaceae. New Zealand Journal of Botany 42(1): 89-103.

• Norton DA., Godley EJ., Heenan PB. and Ladley JJ. (2002) Germination of Sophora seeds after prolonged storage. New Zealand Journal of Botany 40(3): 389-396.

• Norton DA., Ladley JJ. and Sparrow AD. (2002) Host provenance effects on germination and establishment of two New Zealand mistletoes (Loranthaceae). Functional Ecology 16(5): 657-663.

• Montgomery BR., Kelly D. and Ladley JJ. (2001) Pollinator limitation of seed set in Fuchsia perscandens (Onagraceae) on Banks Peninsula, South Island, New Zealand. New Zealand Journal of Botany 39(4): 559-565.

• Robertson AW., Kelly D., Ladley JJ. and Sparrow AD. (1999) Effects of pollinator loss on endemic New Zealand mistletoes (Loranthaceae). Cons. Biol 13: 499-508.

• Norton DA. and Ladley JJ. (1998) Establishment and early growth of Alepis flavida in relation to Nothofagus solandri branch size. New Zealand Journal of Botany 35: 213-217.

• Ladley JJ., Kelly D. and Norton DA. (1997) A guide to hand planting of New Zealand mistletoes (Loranthaceae). New Zealand Botanical Society Newsletter 49: 16-19.

• Ladley JJ., Kelly D. and Robertson AW. (1997) Explosive flowering, nectar production, breeding systems and pollinators of New Zealand mistletoes (Loranthaceae). New Zealand Journal of Botany 35: 345-360.

• Norton DA., Ladley JJ. and Owen HJ. (1997) Distribution and population structure of the loranthaceous mistletoes Alepis flavida, Peraxilla colensoi and Peraxilla tetrapetala within two New Zealand Nothofagus forests. New Zealand Journal of Botany 35: 323-336.

• Norton DA., Ladley JJ. and Sparrow AD. (1997) Development of non-destructive age indices for three New Zealand Loranthaceae mistletoes. New Zealand Journal of Ecology 35: 337-343.

• Kelly D., Ladley JJ., Robertson AW., Edwards J. and Smith DC. (1996) The birds and the bees. Nature 384: 615. http://dx.doi.org/10.1038/384615a0.

• Ladley JJ. and Kelly D. (1996) Dispersal, germination and survival of New Zealand mistletoes (Loranthaceae): dependence on birds. New Zealand Journal of Ecology 20: 69-79.

• Kelly D., Ladley JJ. and Robertson AW. (1995) Regional variation in mistletoe pollination. New Zealand Botanical Society Newsletter 42: 24-26.

• Ladley JJ. and Kelly D. (1995) Explosive New Zealand mistletoe. Nature 378: 766.

• Ladley JJ. and Kelly D. (1995) Mistletoes: how these showy specialists and honeyeaters need each other. Forest and Bird 278: 16-21.

Chapters

• Kelly D., Robertson AW., Ladley JJ., Anderson SH. and McKenzie RJ. (2006) Relative (Un)Importance of Introduced Animals as Pollinators and Dispersers of Native Plants. In Allen RB; Lee WG (Ed.), Biological Invasions in New Zealand: 227-245. Berlin: Springer.

• Kelly D., Robertson AW., Ladley JJ., Anderson SH. and McKenzie RJ. (2006) The relative (un)importance of introduced animals as pollinators and dispersers of native plants. In Allen RB; Lee WG (Ed.), Biological Invasions in New Zealand: 227-245. Berlin: Springer-Verlag.

• Kelly D., Ladley JJ., Robertson AW. and Norton DA. (2000) Limited forest fragmentation improves reproduction in the declining New Zealand mistletoe Peraxilla tetrapetala (Loranthaceae). In Young AG; Clarke GM (Ed.), Genetics, demography, and viability of fragmented populations: 241-252. Cambridge: Cambridge University Press.

• Robertson AW., Kelly D., Sessions L. and Ladley JJ. (1998) Reproductive performance of a remnant mistletoe population at Waipori Gorge. In Hamel J (Ed.), Research in the Taieri Catchment: 40-41. Dunedin: Ecology Research Group, University of Otago.

• Ladley JJ. (1997) Reproductive ecology of the loranthaceae mistletoes of New Zealand. In de langa PJ; Norton DA (Ed.), New Zealand's loranthaceous mistletoes: 111-114. Wellington: Department oF Conservation.

Conference Contributions - Other

• Kelly D., Ladley JJ., Robertson AW., Anderson SH. and Wotton DW. (2010) Large fruits without large frugivores: can variance save dispersal? Montpellier, France: 5th International Symposium-Workshop on Frugivores and Seed Dispersal (1985-2010), 13-18 Jun 2010.

• Robertson A., Kelly D., Ladley JJ., Anderson SH. and Wotton DW. (2010) Germination consequences of non-dispersal in fleshy fruited plants. Montpellier, France: 5th International Symposium-Workshop on Frugivores and Seed Dispersal (1985-2010), 13-18 Jun 2010.

• Ladley JJ., Kelly D. and Robertson AW. (2007) Reproduction by ornithophilous-flowered plants when birds are rare: Sophora prostrata in Canterbury. Christchurch, New Zealand: New Zealand Ecological Society Conference, 19-22 Nov 2007.

• Kelly D., Robertson AW. and Ladley JJ. (2006) Inbreeding: a handy backup on islands, or a pernicious drain? Wellington, New Zealand: Ecology Across The Tasman 2006, 28 Aug-1 Sep 2006.

• Ladley J. and Kelly D. (2006) Feast and famine: New Zealand datasets for mast seeding data. Wellington, New Zealand: Ecology Across The Tasman 2006, 28 Aug-1 Sep 2006.

• Kelly D., Robertson AW., Ladley JJ. and Anderson SH. (2005) Is dispersal easier than pollination? New Zealand as a test case. Brisbane, Australia: 4th International Symposium on Frugivory and Seed Dispersal, 11 Jul 2005.

• Robertson AW., Trass AP., Ladley JJ. and Kelly D. (2005) Assessing the benefits of frugivory for seed germination: Barking up the wrong tree? Brisbane, Australia: 4th International Symposium on Frugivory and Seed Dispersal, 11 Jul 2005.

• Wotton DM., Kelly D. and Ladley JJ. (2005) How important are "keystone" dispersers? Pigeons and large seeds in New Zealand. Brisbane, Australia: 4th International Symposium on Frugivory and Seed Dispersal, 11 Jul 2005.

• Robertson AW., Kelly D., Ladley JJ. and Anderson S. (2004) The vulnerability of southern temperate pollination and dispersal systems to mutualism failure. Cape Town, South Africa: IV Southern Connections, 19 Jan 2004.

• Anderson SH., Kelly D., Robertson AW., Ladley JJ. and Innes JG. (2002) Birds as pollinators and dispersers: a case study from New Zealand. [Paper]. Beijing, China: Acta XXIII Congressus Internationalis Ornithologici, 1 Jan 2002.

• Kelly D., Robertson A., Ladley JJ., Montgomery B. and Burgess V. (2002) Why is Peraxilla tetrapetala pollination better on the edges of forest fragments? [Paper]. Canterbury, England: Soc for Conservation Biol. 2002, 1 Jan 2002.

• Kelly D., Robertson AW., Ladley JJ., Montgomery B. and Burgess V. (2002) Why is Peraxilla tetrapetala pollination better on the edges of forest fragments? Canterbury, England: Society for Conservation Biology, 17 Jul 2002.

• Robertson AW., Ladley JJ. and Kelly D. (2001) It's the quality not the quantity... pollinator declines and inbreeding depresion in tree fuchsia and kowhai. [Paper]. Napier, New Zealand: NZ Ecol Soc Conference, 1 Jan 2001.

• Robertson AW., Ward-Smith T., Murphy D., Kelly D. and Ladley JJ. (2000) Tri-trophic interactions in conservational biology: will poisoning stoats aid forest plant reproduction? Paper. Napier, New Zealand: Orthinological Soc of NZ Conference, 1 Jan 2000.

• Kelly D., Ladley JJ., Robertson AW., Peterson P. and Merrett M. (1999) Pollen and dispersal limitation in Fuchsia excorticata on the New Zealand mainland. [Paper]. Blenheim, New Zealand: NZ Ecol Soc Conference, 1 Jan 1999.

• Kelly D., Ladley JJ. and Robertson AW. (1998) Forest fragmentation benefits New Zealand mistletoe. Poster. Sydney, Australia: Soc for Conservation Biology, 1 Jan 1998.

• Ladley JJ., Kelly J. and Robertson A. (1998) Forest fragmentation suits declining New Zealand mistletoes. Poster. Dunedin, New Zealand: NZ Ecol Soc & Ecol Soc of Australia Meeting, 1 Jan 1998.

• Robertson A., McNutt K., Kelly D. and Ladley JJ. (1998) Native bird declines and the reproduction of New Zealand's flora: have mutualisms been disrupted? [Paper]. Jurien Bay, W. Australia: Australasian Pollination Ecol Soc Conference, 1 Jan 1998.