Sjirk Geerts
TitleCited byYear
African sunbirds hover to pollinate an invasive hummingbird‐pollinated plant
S Geerts, A Pauw
Oikos 118 (4), 573-579, 2009
582009
Hyper-specialization for long-billed bird pollination in a guild of South African plants: the Malachite Sunbird pollination syndrome
S Geerts, A Pauw
South African Journal of Botany 75 (4), 699-706, 2009
542009
Different traits determine introduction, naturalization and invasion success in woody plants: Proteaceae as a test case
D Moodley, S Geerts, DM Richardson, JRU Wilson
PLoS One 8 (9), e75078, 2013
422013
A framework for engaging stakeholders on the management of alien species
A Novoa, R Shackleton, S Canavan, C Cybele, SJ Davies, ...
Journal of environmental management 205, 286-297, 2018
362018
Pollination ecology of the invasive tree tobacco Nicotiana glauca: comparisons across native and non-native ranges
J Ollerton, S Watts, S Connerty, J Lock, L Parker, I Wilson, S Schueller, ...
Journal of Pollination Ecology 9, 85-95, 2012
362012
The absence of fire can cause a lag phase: The invasion dynamics of Banksia ericifolia (Proteaceae)
S Geerts, D Moodley, M Gaertner, JJ Le Roux, MA McGeoch, C Muofhe, ...
Austral Ecology 38 (8), 931-941, 2013
302013
Easy technique for assessing pollination rates in the genus Erica reveals road impact on bird pollination in the Cape fynbos, South Africa
S Geerts, A Pauw
Austral ecology 36 (6), 656-662, 2011
252011
Reduced flower visitation by nectar-feeding birds in response to fire in Cape fynbos vegetation, South Africa
S Geerts, SDT Malherbe, A Pauw
Journal of Ornithology 153 (2), 297-301, 2012
242012
Montpellier broom (Genista monspessulana) and Spanish broom (Spartium junceum) in South Africa: An assessment of invasiveness and options for management
S Geerts, PW Botha, V Visser, DM Richardson, JRU Wilson
South African Journal of Botany 87, 134-145, 2013
222013
Molecular systematics and ecology of invasive Kangaroo Paws in South Africa: management implications for a horticulturally important genus
JJ Le Roux, S Geerts, P Ivey, S Krauss, DM Richardson, J Suda, ...
Biological invasions 12 (12), 3989-4002, 2010
182010
Site-specific conditions influence plant naturalization: the case of alien Proteaceae in South Africa
D Moodley, S Geerts, T Rebelo, DM Richardson, JRU Wilson
Acta Oecologica 59, 62-71, 2014
142014
Farming with native bees (Apis mellifera subsp. capensis Esch.) has varied effects on nectar‐feeding bird communities in South African fynbos vegetation
S Geerts, A Pauw
Population ecology 53 (2), 333-339, 2011
142011
The cost of being specialized: pollinator limitation in the endangered geophyte Brunsvigia litoralis (Amaryllidaceae) in the Cape Floristic Region of South Africa
S Geerts, A Pauw
South African Journal of Botany 78, 159-164, 2012
132012
Pink flower preference in sunbirds does not translate into plant fitness differences in a polymorphic Erica species
A Heystek, S Geerts, P Barnard, A Pauw
Evolutionary ecology 28 (3), 457-470, 2014
122014
Assembly and disassembly of bird pollination communities at the Cape of Africa
S Geerts
Stellenbosch: Stellenbosch University, 2011
122011
The importance of pollinators and autonomous self‐fertilisation in the early stages of plant invasions: Banksia and Hakea (Proteaceae) as case studies
D Moodley, S Geerts, DM Richardson, JRU Wilson
Plant Biology 18 (1), 124-131, 2016
102016
Can short‐billed nectar thieving sunbirds replace long‐billed sunbird pollinators in transformed landscapes?
S Geerts
Plant Biology 18 (6), 1048–1052, 2016
62016
Lack of human-assisted dispersal means Pueraria montanavar. lobata (kudzu vine) could still be eradicated from South Africa
S Geerts, BV Mashele, V Visser, JRU Wilson
Biological invasions 18 (11), 3119-3126, 2016
42016
The ecology and foraging behaviour of the harvester termite, Baucaliotermes hainesi in semi-arid grasslands in the northwestern interior of South Africa
S Geerts, J van der Linden, E van der Linden
Insectes Sociaux 63 (3), 457-465, 2016
32016
A malachite sunbird pollination guild in the Cape flora, with implications for the endangered Brunsvigia litoralis
S Geerts, A Pauw
South African Journal of Botany 73 (2), 289-289, 2007
32007
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Articles 1–20