List of works - Sjirk Geerts

Eucalyptus camaldulensisin South Africa – past, present, future

scientific article published in 2019

A framework for engaging stakeholders on the management of alien species

scientific article published on 9 October 2017

African sunbirds hover to pollinate an invasive hummingbird-pollinated plant

article

African sunbirds hover to pollinate an invasive hummingbird-pollinated plant

scientific article published in 2009

Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa

scientific article published in 2020

Can short-billed nectar thieving sunbirds replace long-billed sunbird pollinators in transformed landscapes?

scientific article published on 24 May 2016

Comparing invasive alien plant community composition between urban, peri-urban and rural areas; the city of Cape Town as a case study

Different traits determine introduction, naturalization and invasion success in woody plants: Proteaceae as a test case ⬇️

scientific article published on 24 September 2013

Distribution of Melaleuca rugulosa (Schlechtendal ex Link) Craven (Myrtaceae) in South Africa: Assessment of invasiveness and feasibility of eradication

scientific article published in 2022

Easy technique for assessing pollination rates in the genus Erica reveals road impact on bird pollination in the Cape fynbos, South Africa

article

Emerging Ornamental Plant Invaders in Urban Areas—Centranthus ruber in Cape Town, South Africa as a Case Study

article

Enhancing invasive alien plant eradication outcomes: Lessons learned from South Africa

scientific article published on 23 July 2024

Farming with native bees (Apis mellifera subsp. capensis Esch.) has varied effects on nectar-feeding bird communities in South African fynbos vegetation

article

Generalist southern African temperate forest canopy tree species have distinct pollinator communities partially predicted by floral traits

scientific article published in May 2024

Hyper-specialization for long-billed bird pollination in a guild of South African plants: the Malachite Sunbird pollination syndrome

article

Identifying safe cultivars of invasive plants: six questions for risk assessment, management, and communication

scientific article

Impacts of an invasive alien Proteaceae on native plant species richness and vegetation structure

scientific article

Invasive alien trees reduce bird species richness and abundance of mutualistic frugivores and nectarivores; a bird’s eye view on a conflict of interest species in riparian habitats

article

Lack of human-assisted dispersal means Pueraria montana var. lobata (kudzu vine) could still be eradicated from South Africa

Mapping Invasive Herbaceous Plant Species with Sentinel-2 Satellite Imagery: Echium plantagineum in a Mediterranean Shrubland as a Case Study

scientific article published in 2023

Mixed effect of habitat fragmentation on pollinator visitation rates but not on seed production in renosterveld of South Africa

scientific article

Modeling the Distribution of the Invasive Alien Cycad Aulacaspis Scale in Africa Under Current and Future Climate Scenarios

scientific article published on 29 July 2020

Molecular systematics and ecology of invasive Kangaroo Paws in South Africa: management implications for a horticulturally important genus

article

Montpellier broom (Genista monspessulana) and Spanish broom (Spartium junceum) in South Africa: An assessment of invasiveness and options for management

article

Pink flower preference in sunbirds does not translate into plant fitness differences in a polymorphic Erica species

article

Pollination and reproduction enhance the invasive potential of an early invader: the case of Lythrum salicaria (purple loosetrife) in South Africa

scientific article published on 17 May 2021

Pollination ecology of the invasive tree tobacco Nicotiana glauca: comparisons across native and non-native ranges

scientific article published in 2012

Pollination structures plant and nectar‐feeding bird communities in Cape fynbos, South Africa: Implications for the conservation of plant–bird mutualisms

scientific article published on 21 July 2020

Reduced flower visitation by nectar-feeding birds in response to fire in Cape fynbos vegetation, South Africa

article

Relationship of alien species continues in a foreign land: The case ofPhytophthoraand AustralianBanksia(Proteaceae) in South African Fynbos

scientific article published in 2022

Scaling up restoration efforts by simulating the effects of fire to circumvent prescribed burns when preparing restoration sites in South African fynbos ecosystems

scientific article published on 27 November 2022

Secondary invaders in riparian habitats can remain up to 10 years after invasive alien Eucalyptus tree clearing

scientific article published in 2022

Secondary invasion and weedy native species dominance after clearing invasive alien plants in South Africa: Status quo and prognosis

scientific article

Sexual dimorphism and static allometry in the South African scorpion Opistophthalmus karrooensis

scientific article published on 11 November 2021

Site-specific conditions influence plant naturalization: The case of alien Proteaceae in South Africa

article

Static allometry and sexual dimorphism in the Striped Lesser-thicktail Scorpion Uroplectes lineatus

scientific article published on 12 March 2021

The Role of Environmental Factors in Promoting and Limiting Biological Invasions in South Africa

scholarly article

The absence of fire can cause a lag phase: The invasion dynamics ofBanksia ericifolia(Proteaceae)

article

The cost of being specialized: Pollinator limitation in the endangered geophyte Brunsvigia litoralis (Amaryllidaceae) in the Cape Floristic Region of South Africa

article

The ecology and foraging behaviour of the harvester termite, Baucaliotermes hainesi in semi-arid grasslands in the northwestern interior of South Africa

The importance of pollinators and autonomous self-fertilisation in the early stages of plant invasions: Banksia and Hakea (Proteaceae) as case studies

scientific article published on 9 April 2015

The invasive alien Hypericum canariense in South Africa: Management, cost, and eradication feasibility

scientific article published in 2022

UN Decade on Ecosystem Restoration: key considerations for Africa

scientific article published on 2 May 2022

List of works by Sjirk Geerts

<i>Eucalyptus camaldulensis</i>in South Africa – past, present, future

A framework for engaging stakeholders on the management of alien species

African sunbirds hover to pollinate an invasive hummingbird-pollinated plant

African sunbirds hover to pollinate an invasive hummingbird-pollinated plant

Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa

Can short-billed nectar thieving sunbirds replace long-billed sunbird pollinators in transformed landscapes?

Comparing invasive alien plant community composition between urban, peri-urban and rural areas; the city of Cape Town as a case study

Different traits determine introduction, naturalization and invasion success in woody plants: Proteaceae as a test case ⬇️

Distribution of Melaleuca rugulosa (Schlechtendal ex Link) Craven (Myrtaceae) in South Africa: Assessment of invasiveness and feasibility of eradication

Easy technique for assessing pollination rates in the genus Erica reveals road impact on bird pollination in the Cape fynbos, South Africa

Emerging Ornamental Plant Invaders in Urban Areas—Centranthus ruber in Cape Town, South Africa as a Case Study

Enhancing invasive alien plant eradication outcomes: Lessons learned from South Africa

Farming with native bees (Apis mellifera subsp. capensis Esch.) has varied effects on nectar-feeding bird communities in South African fynbos vegetation

Generalist southern African temperate forest canopy tree species have distinct pollinator communities partially predicted by floral traits

Hyper-specialization for long-billed bird pollination in a guild of South African plants: the Malachite Sunbird pollination syndrome

Identifying safe cultivars of invasive plants: six questions for risk assessment, management, and communication

Impacts of an invasive alien Proteaceae on native plant species richness and vegetation structure

Invasive alien trees reduce bird species richness and abundance of mutualistic frugivores and nectarivores; a bird’s eye view on a conflict of interest species in riparian habitats

Lack of human-assisted dispersal means Pueraria montana var. lobata (kudzu vine) could still be eradicated from South Africa

Mapping Invasive Herbaceous Plant Species with Sentinel-2 Satellite Imagery: Echium plantagineum in a Mediterranean Shrubland as a Case Study

Mixed effect of habitat fragmentation on pollinator visitation rates but not on seed production in renosterveld of South Africa

Modeling the Distribution of the Invasive Alien Cycad Aulacaspis Scale in Africa Under Current and Future Climate Scenarios

Molecular systematics and ecology of invasive Kangaroo Paws in South Africa: management implications for a horticulturally important genus

Montpellier broom (Genista monspessulana) and Spanish broom (Spartium junceum) in South Africa: An assessment of invasiveness and options for management

Pink flower preference in sunbirds does not translate into plant fitness differences in a polymorphic Erica species

Pollination and reproduction enhance the invasive potential of an early invader: the case of Lythrum salicaria (purple loosetrife) in South Africa

Pollination ecology of the invasive tree tobacco <i>Nicotiana glauca</i>: comparisons across native and non-native ranges

Pollination structures plant and nectar‐feeding bird communities in Cape fynbos, South Africa: Implications for the conservation of plant–bird mutualisms

Reduced flower visitation by nectar-feeding birds in response to fire in Cape fynbos vegetation, South Africa

Relationship of alien species continues in a foreign land: The case of<i>Phytophthora</i>and Australian<i>Banksia</i>(Proteaceae) in South African Fynbos

Scaling up restoration efforts by simulating the effects of fire to circumvent prescribed burns when preparing restoration sites in South African fynbos ecosystems

Secondary invaders in riparian habitats can remain up to 10 years after invasive alien Eucalyptus tree clearing

Secondary invasion and weedy native species dominance after clearing invasive alien plants in South Africa: Status quo and prognosis

Sexual dimorphism and static allometry in the South African scorpion Opistophthalmus karrooensis

Site-specific conditions influence plant naturalization: The case of alien Proteaceae in South Africa

Static allometry and sexual dimorphism in the Striped Lesser-thicktail Scorpion Uroplectes lineatus

The Role of Environmental Factors in Promoting and Limiting Biological Invasions in South Africa

The absence of fire can cause a lag phase: The invasion dynamics ofBanksia ericifolia(Proteaceae)

The cost of being specialized: Pollinator limitation in the endangered geophyte Brunsvigia litoralis (Amaryllidaceae) in the Cape Floristic Region of South Africa

The ecology and foraging behaviour of the harvester termite, Baucaliotermes hainesi in semi-arid grasslands in the northwestern interior of South Africa

The importance of pollinators and autonomous self-fertilisation in the early stages of plant invasions: Banksia and Hakea (Proteaceae) as case studies

The invasive alien Hypericum canariense in South Africa: Management, cost, and eradication feasibility

UN Decade on Ecosystem Restoration: key considerations for Africa