Melissa A. Johnson
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View article: Block-stumping as an effective and cost-efficient style of pruning to reduce coffee berry borer (Hypothenemus hampei Ferrari) infestation and damage in Hawaiian coffee farms
Block-stumping as an effective and cost-efficient style of pruning to reduce coffee berry borer (Hypothenemus hampei Ferrari) infestation and damage in Hawaiian coffee farms Open
View article: Fungicide efficacy and duration of protection against coffee leaf rust (Hemileia vastatrix) on commercial coffee farms in Hawaii
Fungicide efficacy and duration of protection against coffee leaf rust (Hemileia vastatrix) on commercial coffee farms in Hawaii Open
View article: <i>Prosapia bicincta</i> (Hemiptera: Cercopidae) abundance, plant associations, and impacts on groundcover in Hawaiʻi Island rangelands
<i>Prosapia bicincta</i> (Hemiptera: Cercopidae) abundance, plant associations, and impacts on groundcover in Hawaiʻi Island rangelands Open
The twolined spittlebug, Prosapia bicincta (Say), is a major economic pest of forage grass and turfgrass. Prosapia bicincta was first detected in rangelands on Hawaiʻi Island in 2016 and has since spread to an estimated 72,000 ha in the No…
View article: Phylogeny, biogeography, and host range of gall midges (Diptera: Cecidomyiidae) feeding on spores of rust fungi (Basidiomycota: Pucciniales)
Phylogeny, biogeography, and host range of gall midges (Diptera: Cecidomyiidae) feeding on spores of rust fungi (Basidiomycota: Pucciniales) Open
Rust fungi (Pucciniales) are plant pathogens that can cause devastating yield losses to economically important crops and threaten native plants with extinction. Rusts are usually controlled with fungicides when rust-resistant plant varieti…
View article: Vertical and temporal flight patterns of coffee berry borer (Coleoptera: Curculionidae) in Hawaii
Vertical and temporal flight patterns of coffee berry borer (Coleoptera: Curculionidae) in Hawaii Open
Coffee berry borer (Hypothenemus hampei Ferrari) (Coleoptera: Curculionidae) is the most damaging insect pest of coffee worldwide, causing significant losses in coffee yields and quality. Knowledge of vertical and temporal flight patterns …
View article: Coffee berry borer (Coleoptera: Scolytidae) population dynamics across Hawaii Island’s diverse coffee-growing landscape: optimizing location-specific pesticide applications
Coffee berry borer (Coleoptera: Scolytidae) population dynamics across Hawaii Island’s diverse coffee-growing landscape: optimizing location-specific pesticide applications Open
A major challenge to area-wide management of coffee berry borer (Hypothenemus hampei Ferrari) (Coleoptera: Scolytidae) is understanding how a heterogeneous coffee-growing landscape affects coffee berry borer population dynamics across temp…
View article: Evaluation of Integrated Pest Management Module against Pests of Ground Nut and Productivity, Profitability Analysis under Open Field Conditions
Evaluation of Integrated Pest Management Module against Pests of Ground Nut and Productivity, Profitability Analysis under Open Field Conditions Open
Background: Groundnut is an annual oilseed crop that is cultivated in many tropical and sub-tropical countries for its seed purpose. The productivity of groundnut has drastically reduced since 2015 due to an array of insect pests especiall…
View article: Establishing an Integrated Pest Management Program for Coffee Berry Borer (Hypothenemus hampei) in Hawaii and Puerto Rico Coffee Agroecosystems: Achievements and Challenges
Establishing an Integrated Pest Management Program for Coffee Berry Borer (Hypothenemus hampei) in Hawaii and Puerto Rico Coffee Agroecosystems: Achievements and Challenges Open
Coffee berry borer (CBB) is the most serious insect pest of coffee worldwide, causing significant reductions in yield and quality. Following the introduction of CBB to Puerto Rico (2007) and Hawaii (2010), researchers, extension agents, in…
View article: Phylogenetic and functional trait‐based community assembly within Pacific <i>Cyrtandra</i> (Gesneriaceae): Evidence for clustering at multiple spatial scales
Phylogenetic and functional trait‐based community assembly within Pacific <i>Cyrtandra</i> (Gesneriaceae): Evidence for clustering at multiple spatial scales Open
Tropical rainforest communities are often characterized by a small number of species‐rich genera that contribute disproportionately to the alpha diversity in these habitats. In the Pacific Basin, there are nearly 200 species of Cyrtandra ,…
View article: Economic Benefits from Managing Coffee Berry Borer (Hypothenemus hampei) in Hawaii
Economic Benefits from Managing Coffee Berry Borer (Hypothenemus hampei) in Hawaii Open
Coffee berry borer (CBB) is considered the most damaging insect pest of coffee worldwide. CBB was first detected on Hawai‘i Island in 2010, and quickly spread throughout the state’s coffee-growing regions. With the introduction of this pes…
View article: Frequent and efficient harvesting as an economically viable strategy to regulate coffee berry borer on commercial farms in Hawaii
Frequent and efficient harvesting as an economically viable strategy to regulate coffee berry borer on commercial farms in Hawaii Open
Coffee is the second most economically important agricultural crop in Hawaii, valued at around $175M for green and roasted coffee in the 2021–2022 season. With the introduction of coffee berry borer (CBB, Hypothenemus hampei Ferrari) to Ha…
View article: Pathway Analysis: Likelihood of Coffee Berry Borer (Hypothenemus hampei Ferrari) Introduction into the Hawaiian Islands by Air Passenger Travel
Pathway Analysis: Likelihood of Coffee Berry Borer (Hypothenemus hampei Ferrari) Introduction into the Hawaiian Islands by Air Passenger Travel Open
Takeuchi, Yu, Benavides, Pablo, Johnson, Melissa A., Follett, Peter A., Hossain, Mohammad Khalid, Navarro, Lucio, Giraldo, Marisol (2022): Pathway Analysis: Likelihood of Coffee Berry Borer (Hypothenemus hampei Ferrari) Introduction into t…
View article: Monitoring Coffee Leaf Rust (Hemileia vastatrix) on Commercial Coffee Farms in Hawaii: Early Insights from the First Year of Disease Incursion
Monitoring Coffee Leaf Rust (Hemileia vastatrix) on Commercial Coffee Farms in Hawaii: Early Insights from the First Year of Disease Incursion Open
Coffee leaf rust (CLR, Hemileia vastatrix) is considered the most damaging coffee disease worldwide, causing reduced yields and even plant death. CLR was detected in Hawaii for the first time in 2020, and quickly spread across the state. W…
View article: Influence of seasonal and climatic variables on coffee berry borer (Hypothenemus hampei Ferrari) flight activity in Hawaii
Influence of seasonal and climatic variables on coffee berry borer (Hypothenemus hampei Ferrari) flight activity in Hawaii Open
Coffee berry borer (CBB, Hypothenemus hampei Ferrari) is the most serious insect pest of coffee worldwide, yet little is known about the effect that weather variables have on CBB flight activity. We sampled flying female CBB adults bi-week…
View article: JoVE Video Dataset
JoVE Video Dataset Open
Coffee berry borer (CBB) is the most devastating insect pest for coffee crops worldwide. We developed a scientific monitoring protocol that is aimed at capturing and quantifying the dynamics and impact of this invasive insect pest as well …
View article: Phylogenetic and functional trait-based community assembly within Pacific Cyrtandra (Gesneriaceae): evidence for clustering at multiple spatial scales
Phylogenetic and functional trait-based community assembly within Pacific Cyrtandra (Gesneriaceae): evidence for clustering at multiple spatial scales Open
Tropical rainforest communities are often characterized by a small number of species-rich genera that contribute disproportionately to the alpha diversity in these habitats. In the Pacific Basin there are nearly 200 species of Cyrtandra , …
View article: Seasonal phenology of Coffee Berry Borer (<i>Hypothenemus hampei</i>Ferrari) in Hawaii and the influence of weather on flight activity
Seasonal phenology of Coffee Berry Borer (<i>Hypothenemus hampei</i>Ferrari) in Hawaii and the influence of weather on flight activity Open
Coffee berry borer (CBB, Hypothenemus hampei Ferrari) is the most serious insect pest of coffee worldwide, yet little is known about its seasonal flight behavior or the effect that weather variables have on its activity. We sampled flying …
View article: Coffee Berry Borer (Hypothenemus hampei), a Global Pest of Coffee: Perspectives from Historical and Recent Invasions, and Future Priorities
Coffee Berry Borer (Hypothenemus hampei), a Global Pest of Coffee: Perspectives from Historical and Recent Invasions, and Future Priorities Open
Coffee berry borer (Hypothenemus hampei (Ferrari), CBB) has invaded nearly every coffee-producing country in the world, and it is commonly recognized as the most damaging insect pest of coffee. While research has been conducted on this pes…
View article: Dispersal and adaptive radiation of <i>Bidens</i> (Compositae) across the remote archipelagoes of Polynesia
Dispersal and adaptive radiation of <i>Bidens</i> (Compositae) across the remote archipelagoes of Polynesia Open
The genus Bidens (Compositae) comprises c . 230 species distributed across five continents, with the 41 Polynesian species displaying the greatest ecomorphological variation in the group. However, the genus has had a long and complicated t…
View article: Abundance of Coffee berry borer in feral, abandoned and managed coffee on Hawaii Island
Abundance of Coffee berry borer in feral, abandoned and managed coffee on Hawaii Island Open
Coffee berry borer ( Hypothenemus hampei Ferrari), the most damaging insect pest of coffee worldwide, was first detected on Hawaii Island in 2010. Poorly managed, abandoned and feral coffee sites on the island have since been thought to ha…
View article: Evaluation of Exclusion Netting for Coffee Berry Borer (Hypothenemus Hampei) Management
Evaluation of Exclusion Netting for Coffee Berry Borer (Hypothenemus Hampei) Management Open
Exclusion nets are increasingly being used to protect a variety of agricultural crops from insect pests as a sustainable alternative to chemical controls. We examined the efficacy of exclusion nets in controlling the world’s most damaging …
View article: A molecular phylogeny of Southeast Asian Cyrtandra (Gesneriaceae) supports an emerging paradigm for Malesian plant biogeography
A molecular phylogeny of Southeast Asian Cyrtandra (Gesneriaceae) supports an emerging paradigm for Malesian plant biogeography Open
The islands of Southeast Asia comprise one of the most geologically and biogeographically complex areas in the world and are a centre of exceptional floristic diversity, harbouring 45,000 species of flowering plants. Cyrtandra, with over 8…
View article: Postharvest Population Reservoirs of Coffee Berry Borer (Coleoptera: Curculionidae) on Hawai’i Island
Postharvest Population Reservoirs of Coffee Berry Borer (Coleoptera: Curculionidae) on Hawai’i Island Open
Coffee berry borer, Hypothenemus hampei Ferrari (Coleoptera: Curculionidae: Scolytinae), is the most damaging insect pest of coffee worldwide. Old coffee berries (raisins) are widely acknowledged as coffee berry borer reservoirs, yet few s…
View article: Varieties of the highly dispersible and hypervariable tree, <i>Metrosideros polymorpha</i>, differ in response to mechanical stress and light across a sharp ecotone
Varieties of the highly dispersible and hypervariable tree, <i>Metrosideros polymorpha</i>, differ in response to mechanical stress and light across a sharp ecotone Open
Premise The drivers of isolation between sympatric populations of long‐lived and highly dispersible conspecific plants are not well understood. In the Hawaiian Islands, the landscape‐dominant tree, Metrosideros polymorpha , displays extrao…
View article: Coffee berry borer (Hypothenemus hampei) (Coleoptera: Curculionidae) development across an elevational gradient on Hawai‘i Island: Applying laboratory degree-day predictions to natural field populations
Coffee berry borer (Hypothenemus hampei) (Coleoptera: Curculionidae) development across an elevational gradient on Hawai‘i Island: Applying laboratory degree-day predictions to natural field populations Open
Coffee berry borer (CBB, Hypothenemus hampei) (Coleoptera: Curculionidae: Scolytinae) is the most destructive pest of coffee worldwide. Information on CBB development times can be used to predict the initiation of new infestation cycles ea…
View article: The Hawaii Protocol for Scientific Monitoring of Coffee Berry Borer: a Model for Coffee Agroecosystems Worldwide
The Hawaii Protocol for Scientific Monitoring of Coffee Berry Borer: a Model for Coffee Agroecosystems Worldwide Open
Coffee berry borer (CBB) is the most devastating insect pest for coffee crops worldwide. We developed a scientific monitoring protocol that is aimed at capturing and quantifying the dynamics and impact of this invasive insect pest as well …
View article: Four new species of Cyrtandra (Gesneriaceae) from the South Pacific islands of Fiji
Four new species of Cyrtandra (Gesneriaceae) from the South Pacific islands of Fiji Open
During fieldwork in Fiji, four new species of Cyrtandra (Gesneriaceae) were discovered and are described herein: C. gregoryi M.A.Johnson, sp. nov., C. hispida M.A.Johnson, sp. nov., C. longifructosa
View article: Integrated Pest Management of Coffee Berry Borer in Hawaii and Puerto Rico: Current Status and Prospects
Integrated Pest Management of Coffee Berry Borer in Hawaii and Puerto Rico: Current Status and Prospects Open
The coffee berry borer (CBB), Hypothenemus hampei, is the most significant insect pest of coffee worldwide. Since CBB was detected in Puerto Rico in 2007 and Hawaii in 2010, coffee growers from these islands are facing increased costs, red…
View article: Incipient ecological speciation between successional varieties of a dominant tree involves intrinsic postzygotic isolating barriers
Incipient ecological speciation between successional varieties of a dominant tree involves intrinsic postzygotic isolating barriers Open
Whereas disruptive selection imposed by heterogeneous environments can lead to the evolution of extrinsic isolating barriers between diverging populations, the evolution of intrinsic postzygotic barriers through divergent selection is less…
View article: Postzygotic barriers isolate sympatric species of <i>Cyrtandra</i> (Gesneriaceae) in Hawaiian montane forest understories
Postzygotic barriers isolate sympatric species of <i>Cyrtandra</i> (Gesneriaceae) in Hawaiian montane forest understories Open
PREMISE OF THE STUDY: Recent reviews of reproductive isolation (RI) in plants propose that boundaries between closely related species are maintained predominantly through prezygotic mechanisms. However, few experimental studies have explor…