Treesearch

Emerging plant pathogens have been increasing exponentially over the last century. To address this issue, it is critical to determine whether these pathogens are native to ecosystems or have been recently introduced. Understanding the ecological and evolutionary processes fostering emergence can help to manage their spread and predict epidemics/epiphytotics. Using restriction site-associated DNA sequencing data, we studied genetic relationships, pathways of spread and the evolutionary history of Phellinus noxius, an emerging root-rotting fungus of unknown origin, in eastern Asia, Australia...

Urban parks provide many ecosystem services, and conserving biodiversity is one of the most important among them. Keeping track of biodiversity indices and their evolution over time is a useful procedure for preserving biodiversity within urban habitats. The paper presents an application of the R programming language and the R package “vegan” for calculating alpha and beta diversity indices for dendroflora in urban parks. The case study includes five major parks in the city of Novi Sad, Serbia: Danube, Futog, Kamenica, Liman and Railway park. The alpha indices calculated in the paper are...

The paper compares two multi-criteria methods, the analytic hierarchy process (AHP) and the best–worst method (BWM), in assessing criteria related to the quality of urban parks. The criteria assessed were accessibility, location, biodiversity preservation, park equipment, water elements, terrain configuration, cultural and historical value, and the presence of small architectural objects. Five decision-makers participated in the research, having expertise in urban greenery, urban forestry, environmental protection, landscape design, and cultural and historical heritage. The results of...

Tropical forest degradation (e.g., anthropogenic disturbances such as selective logging and fires) alters forest structure and function and influences the forest’s carbon sink. In this study, we explored structure-function relationships across a variety of degradation levels in the southern Brazilian Amazon by 1) investigating how forest structural properties vary as a function of degradation history using airborne lidar data; 2) assessing the effects of degradation on solar-induced chlorophyll fluorescence (SIF) seasonality using TROPOMI data; and 3) quantifying the contribution of...

Social media platforms represent a potentially cost-effective solution to obtaining stated preference data. We use data from a representative sample and a sample of convenience to investigate how willingness to pay (WTP) for increased cultural (recreational) use of an ecologically unique site differs across the two groups. We find mixed evidence of differences in WTP estimates between the two samples depending on the survey attribute. Where differences exist, the most effective selection correction mechanism is the ordered probit with weights. Our results suggest caution about extrapolating...

The plains spotted skunk (Spilogale interrupta) is of conservation concern because of widespread population declines and is being considered for listing under the United States Endangered Species Act. Although the taxon is relatively rare and difficult to study, recent research and reports provided some information about spotted skunks in Arkansas and Missouri, USA. Using this information, we employed full and simplified multivariate species distribution models to evaluate cover type associations and identify regions of high predicted presence for plains spotted skunks. The simple model...

Wildfire is an influential driver of social and ecological change that calls for adaptive governance on federal lands. We identify supporting and limiting elements of adaptive governance in the context of wildfire management on the Deschutes National Forest (DNF). We use key findings to propose actions and leverage points to increase the US Forest Service’s ability to engage in adaptive governance. Our research suggests that key supporting elements of adaptive governance within the Forest Service are generally found at the local scale. These supportive elements can be tapped to shed...

We evaluated commonly used methods for monitoring stream restorations to inform and improve restoration monitoring and evaluation, using a headwater stream in the Oregon Coast Range as a case-study example. In-stream restoration projects are seldom monitored both pre- and post-restoration. In addition, frequently used low-cost methods may not provide sufficient data to effectively assess trends in stream temperature. Here, we examined what can be learned from temperature loggers installed in the same locations over multiple years in a restored stream. In-stream structures were installed...

This recovery plan is one of several plant disease-specific documents produced as part of the National Plant Disease Recovery System (NPDRS) requested by the Homeland Security Presidential Directive Number 9 (HSPD-9). The purpose of the NPDRS is to ensure that the tools, infrastructure, communication networks, and capacity required for mitigating impacts of high-consequence plant disease outbreaks are implemented so that a reasonable level of crop production is maintained.Each plant disease-specific plan is intended to provide a brief summary of the disease, assess the status of critical...

Outdoor recreation is a type of recreation that occurs in, and depends on, the natural environment. Ecosystem services are the benefits people receive from ecosystems. The outdoor recreation research (ORR) field has developed a detailed understanding of the recreation experience but has not developed a full understanding of the contribution of the natural environment to those experiences. Recreation Ecosystem Services (RES) is a newer area of research that highlights the contribution of the natural environment for recreation. The integration of these lines of research can improve our...