A5088495935- Plant Pathogens and Fungal Diseases
- Forest Insect Ecology and Management
- Yeasts and Rust Fungi Studies
- Forest ecology and management
- Forest Ecology and Biodiversity Studies
- Mycorrhizal Fungi and Plant Interactions
- Plant Pathogens and Resistance
- Plant and Fungal Interactions Research
- Horticultural and Viticultural Research
- Lichen and fungal ecology
- Plant responses to elevated CO2
- Fungal Plant Pathogen Control
- Entomopathogenic Microorganisms in Pest Control
- Remote Sensing and LiDAR Applications
- Plant Disease Resistance and Genetics
- Species Distribution and Climate Change
- Plant Disease Management Techniques
- Forest Management and Policy
- Plant Pathogenic Bacteria Studies
- Fire effects on ecosystems
- Smart Materials for Construction
- Tree-ring climate responses
- Infectious Diseases and Mycology
- Seedling growth and survival studies
- Environmental DNA in Biodiversity Studies
US Forest Service
2015-2024
Swiss Federal Institute for Forest, Snow and Landscape Research
2021
University of New Hampshire
2017
University of New Hampshire at Manchester
2017
Colorado State University
2017
United States Department of Agriculture
2015
University of Nevada, Reno
2010
Louisiana Department of Natural Resources
2010
University of Wisconsin–Madison
2006-2008
SUNY College of Environmental Science and Forestry
2006
Eastern white pine is a crucial ecological and economic component of forests in the northern USA eastern Canada, now facing an emerging problem needle damage (WPND). It still unclear whether WPND results from one, or combination several fungal pathogens. Therefore, first objective this study was to characterize fungi associated with northeastern United States document being done mature as result repeated defoliation. To date, 22 species fungi, either cultured diseased needles formed fruiting...
The defoliation of the eastern white pine (Pinus strobus) across northeastern United States is an escalating concern threatening ecological health northern forests and economic vitality region's lumber industry. First documented in spring 2010 affecting 24 328 hectares state Maine, needle damage (WPND) has continued to spread now well established all New England states. While causal agents WPND are known, current research lacking both sampling distribution specific environmental factor(s)...
The Global Plant Health Assessment (GPHA) is a collective, volunteer-based effort to assemble expert opinions on plant health and disease impacts ecosystem services based published scientific evidence. GPHA considers range of forest, agricultural, urban systems worldwide. These are referred as (Ecoregion × System), i.e., selected case examples involving keystone plants in given parts the world. focuses infectious diseases pathogens, but encompasses abiotic (e.g., temperature, drought,...
The disease complex white pine needle damage (WPND), first reported in 2006, has now escalated to an epidemic state across the northeastern United States. Although this is composed of several fungal species, Lecanosticta acicola considered be primary causal agent. Knowledge regarding epidemiology, specific climatic factors that affect spread L. on eastern (Pinus strobus) natural forest settings, and potential risks repeated defoliation may have tree health limited. Therefore, study examined...
Caliciopsis canker is an emerging problem in Pinus growing regions of Eastern North America. The fungal disease caused by pinea associated with overstocked stands and poor sites, but few quantitative data are available. objective this study, therefore, was to assess the extent severity explore environmental variables identify areas at risk damage. During 2014, 58 sites across New England >75% P. strobus basal area public lands were surveyed. Most (72%) had signs or symptoms. successfully...
Soil and stand density were found to be promising predictive variables associated with damage by the emerging disease of eastern white pine, Caliciopsis canker, in a 2014 survey randomly selected pine (Pinus strobus L.) stands. The objective this study was further investigate relationship between soil stocking forests New England stratifying sampling across soils measuring more systematically. A total 62 stands sampled during 2015–2016. Stands stratified groups several prism plots...
In 2009 unusual white pine needle discoloration was observed in eastern Canada and northeastern USA. While the symptoms were similar most stands, disease diagnosed as Canavirgella banfieldii several locations Dooks blight caused by Lophophacidium dooksii others. Because of similarities symptom development morphological characters causal agents, it suspected that C. L. are either same or closely related species. To test this hypothesis we examined collections representing dooksii, including...
Abstract The 2015–2018 outbreak of spongy moth ( Lymantria dispar ) in southern New England initiated a severe oak decline and mortality event. While defoliation was primary driver, increased secondary pest pathogen activity contributed to death. Following this large event, Diplodia frequently recovered from northern red oaks Quercus rubra with serious outbreaks twig cankering. Given the many recent reports corticola on eastern North America, it presumed be causal agent. To confirm, limited...
To determine the impact of white pine blister rust (WPBR) following recent breakdown Cr resistance dominant gene in cultivated Ribes spp., 255 plants 19 cultivars and 445 neighboring eastern (Pinus strobus) from 42 sites across New Hampshire were evaluated. Of evaluated, 15 WPBR resistant, 4 these labeled as black currant (Ribes nigrum) with (Cr cultivars). Incidence ranged 0 to 88% for WPBR-resistant cultivars. Mean severity was 14 <6% leaf area partially resistant cultivars, respectively....
Abstract As we contemplate the future of forest landscapes under changing climate conditions and land‐use demands, there is increasing value in studying historic how these have changed following past disturbances. Historic landscape paintings are a potential source data on preindustrial forests with highly detailed, full‐color depictions overstory understory environments. They display key details about community composition, microhabitat features, structural complexity from time well before...
In the northeastern United States, eastern white pine (Pinus strobus L.) is a leading species in forest products industry. The native pathogen Caliciopsis pinea Peck associated with canker of pine, symptoms including excessive resin production and cankers. This study processed 28.0 m 3 lumber to (i) quantify losses resulting from canker, (ii) assess how damage varies between symptom severity thinning, (iii) economic loss damage. was present 37% lumber, yet only 10% downgraded due Of vast...
Frequency of detection and inoculum production by the conifer shoot blight canker pathogens Diplodia pinea D. scrobiculata on cones red pine (Pinus resinosa) jack (P. banksiana) were studied. Cones collected from ground canopies trees in mixed stands at three sites each two different locations during consecutive summers Wisconsin. Conidia extracted water, quantified, germination tested, species present was determined using molecular methods. At least one pathogen detected tree site both...
Summary In summer of 2004, pycnidia Diplodia pinea were observed on cones Pinus resinosa that had matured and opened during previous years, but been retained in canopies trees at a mature red pine plantation southern Wisconsin. Surveys the winter early three consecutive years (2005–2007) to determine incidence abundance D. conidia different ages this stand. Cones from each age class consistently bore with . Although collected June year after their maturation tended yield more than older...
Increasing prevalence of conifer needle pathogens globally have prompted further studies on pathogen identification and a better understanding phylogenetic relationships among pathogens. Several Lophodermella species can be aggressive causing cast in natural pine forests the USA Europe. However, their with other Rhytismataceae historically been based similarities only limited phenotypic characters. Currently, no molecular completed to elucidate This study collected sequenced three gene loci,...
The genus Caliciopsis (Eurotiomycetes, Coryneliales) includes saprobic and plant pathogenic species. canker is caused by pinea Peck, a species first reported in the 19th century North America. In recent years, increasing numbers of outbreaks have been on different Pinus spp. eastern USA. Europe, disease has only occasionally causing cankers, mostly radiata stressed plantations. aim this study was to clarify taxonomy specimens collected from infected Europe America using an integrative...