Dictionary for Managing Trees in Urban Environments

2009 ◽  
Author(s):  
Danny B Draper ◽  
Peter A Richards
Keyword(s):  
Urban Forestry ◽  
Urban Environments ◽  
Urban Trees ◽  
Plain Language ◽  
Broad Application ◽  
Tree Management ◽  
Comprehensive List ◽  
Plant Sciences ◽  
Management Policies

Dictionary for Managing Trees in Urban Environments is a comprehensive list of terms used in the universal management of urban trees. Many of the terms are from arboricultural science, while others are derived from unproven but commonly applied concepts. Where the existing terminology to describe trees was limited or nonexistent, new terms have been introduced. This dictionary allows for broad application and use by a wide variety of people and conveys in plain language concepts that are sometimes complex. Most major terms have been cross referenced and diagrams have been added for greater understanding. While a number of pertinent botanical terms have been included, those readily found within dictionaries of general plant sciences and botany have been omitted. Dictionary for Managing Trees in Urban Environments promotes a greater understanding of arboriculture and urban forestry, and will assist in the preparation of reports for the management of trees, procedures and planning instruments, such as Tree Management Policies and Tree Management Orders.

scholarly journals Urban trees as social triggers: The case of the Ginkgo biloba specimen in Tallinn, Estonia

2019 ◽  
Vol 47 (1/2) ◽  
pp. 234-256 ◽  
Author(s):  
Riin Magnus ◽  
Heldur Sander
Keyword(s):  
Ginkgo Biloba ◽  
Cultural Memory ◽  
Well Being ◽  
Urban Environments ◽  
Urban Trees ◽  
Human Organism ◽  
Cultural Space ◽  
Cultural Ideal ◽  
Human Interactions ◽  
The Ideal

Urban trees are considered to be essential and integral to urban environments, to contribute to the biodiversity of cities as well as to the well-being of their inhabitants. In addition, urban trees may also serve as living memorials, helping to remember major social eruptions and to cement continuity with the past, but also as social disruptors that can induce clashes between different ideals of culture. In this paper, we focus on a specific case, a Ginkgo biloba specimen growing at Süda Street in the centre of Tallinn, in order to demonstrate how the shifts in the meaning attributed to a non-human organism can shape cultural memory and underlie social confrontations. Integrating an ecosemiotic approach to human-non-human interactions with Juri Lotman’s approach to cultural memory and cultural space, we point out how non-human organisms can delimit cultural space at different times and how the ideal of culture is shaped by different ways of incorporating or other species in the human cultural ideal or excluding them from it.

scholarly journals Growing Value: Describing The Nature Of The Relationship Between Street-Level Greenery and Housing Prices in Toronto

2021 ◽  
Author(s):  
Spencer Bridgwater
Keyword(s):  
Urban Environment ◽  
Housing Prices ◽  
Urban Forestry ◽  
Demographic Variables ◽  
Urban Environments ◽  
Developmental Context ◽  
Street Level ◽  
The Relationship ◽  
Aerial Perspective

The role of urban forestry has become increasingly important in the context of sustainability, both from an environmental context, and from a developmental context. Greenery in an urban environment has demonstrable implications for health, air quality, aesthetics, and land value, as described broadly across the literature. Until recently, studies on green urban canopies and housing prices have been limited in their methodology by using aerial-perspective data. The MIT Senseable City Lab in 2015 developed the Treepedia project, which uses Google Street View images to quantify greenery levels in urban environments. Using the green view index (GVI) data from the Treepedia project, street-level greenery densities were compared against housing prices across Toronto. Models for different property types, accounting for characteristic, locational, and demographic variables, were estimated. It was determined that a statistically significant relationship between street-level greenery and housing prices exists in Toronto for detached homes, semi-detached homes, row/townhouse units, condo apartments, and condo townhouses.

scholarly journals Unintentional Vandalism: Unskilled tree pruning practices in tree management

2021 ◽  
Vol 6 (16) ◽  
pp. 181-188
Author(s):  
Helmi Hamzah ◽  
Noriah Othman ◽  
Norainiratna Badrulhisham ◽  
Lina Karlinasari
Keyword(s):  
Publishing House ◽  
Urban Trees ◽  
Structure Damage ◽  
Urban Tree ◽  
Tree Management ◽  
Qualitative And Quantitative ◽  
International Publishing ◽  
The Relationship ◽  
Tree Pruning ◽  
Open Access Article

Urban trees are exposed to "unintentional vandalism" during poorly skilled pruning practices that can lead to tree structure damage. This causes harmful consequences that affect tree performance in terms of the ecosystem services they contribute. This study aims to explore the relationship between unintentional tree vandalism and poorly skilled pruning practices in tree maintenance by analysing qualitative and quantitative data from tree workers contracted by selected Malaysian local authorities and tree care experts. The results showed that insufficient tree pruning knowledge leads to unintentional vandalism in tree pruning practices. Keywords: Tree management; unskilled tree pruning; unintentional tree vandalism; urban tree eISSN: 2398-4287© 2021. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians/Africans/Arabians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v6i16.2633

scholarly journals Insect herbivory on urban trees: Complementary effects of tree neighbours and predation

2020 ◽  
Author(s):  
Alex Stemmelen ◽  
Alain Paquette ◽  
Marie-Lise Benot ◽  
Yasmine Kadiri ◽  
Hervé Jactel ◽  
...  
Keyword(s):  
Insect Herbivory ◽  
Urban Ecosystems ◽  
Urban Environments ◽  
Tree Diversity ◽  
Urban Trees ◽  
List Type ◽  
Growth And Survival ◽  
Predator Attack ◽  
Peer Community ◽  
Survival Tree

AbstractInsect herbivory is an important component of forest ecosystems functioning and can affect tree growth and survival. Tree diversity is known to influence insect herbivory in natural forest, with most studies reporting a decrease in herbivory with increasing tree diversity. Urban ecosystems, on the other hand, differ in many ways from the forest ecosystem and the drivers of insect herbivory in cities are still debated.We monitored 48 urban trees from five species – three native and two exotic – in three parks of Montreal (Canada) for leaf insect herbivory and predator activity on artificial larvae, and linked herbivory with both predation and tree diversity in the vicinity of focal trees.Leaf insect herbivory decreased with increasing tree diversity and with increasing predator attack rate.Our findings indicate that tree diversity is a key determinant of multitrophic interactions between trees, herbivores and predators in urban environments and that managing tree diversity could contribute to pest control in cities.This article has been peer-reviewed and recommended by Peer Community in Ecologyhttps://doi.org/10.24072/pci.ecology.100061

scholarly journals Urban Trees and Human Health: A Scoping Review

2020 ◽  
Vol 17 (12) ◽  
pp. 4371 ◽  
Author(s):  
Kathleen L. Wolf ◽  
Sharon T. Lam ◽  
Jennifer K. McKeen ◽  
Gregory R.A. Richardson ◽  
Matilda van den Bosch ◽  
...  
Keyword(s):  
Public Health ◽  
Human Health ◽  
Green Infrastructure ◽  
Weight Status ◽  
Urban Forest ◽  
Research Policy ◽  
Urban Forestry ◽  
Urban Trees ◽  
Environmental Benefits ◽  
Future Research

The urban forest is a green infrastructure system that delivers multiple environmental, economic, social and health services, and functions in cities. Environmental benefits of urban trees are well understood, but no review to date has examined how urban trees affect human health. This review provides a comprehensive summary of existing literature on the health impacts of urban trees that can inform future research, policy, and nature-based public health interventions. A systematic search used keywords representing human health, environmental health, and urban forestry. Following screening and appraisal of several thousand articles, 201 studies were conceptually sorted into a three-part framework. Reducing Harm, representing 41% of studies, includes topics such as air pollution, ultraviolet radiation, heat exposure, and pollen. Restoring Capacities, at 31%, includes attention restoration, mental health, stress reduction, and clinical outcomes. Building Capacities, at 28%, includes topics such as birth outcomes, active living, and weight status. The studies that were reviewed show substantial heterogeneity in purpose and method yet indicate important health outcomes associated with people’s exposure to trees. This review will help inform future research and practice, and demonstrates why urban forest planning and management should strategically promote trees as a social determinant of public health.

scholarly journals Technical and Economic Aspects of Stone Pine (Pinus pinea L.) Maintenance in Urban Environments

2021 ◽  
Author(s):  
Marcello Biocca ◽  
Pietro Gallo ◽  
Giulio Sperandio
Keyword(s):  
Video Recording ◽  
Urban Forestry ◽  
Multiple Linear Regression Model ◽  
Observation Time ◽  
Urban Environments ◽  
Pinus Pinea ◽  
P Value ◽  
Stone Pine ◽  
Residual Biomass ◽  
The City

The Italian Stone Pine (Pinus pinea L.) is one of the most employed ornamental trees in towns with Mediterranean climates. For example, in the city of Rome, Pinus is the most common genus, with more than 51,000 trees. This study investigates technical and economic features of maintenance operations of Stone Pines and evaluates the productivity and costs of the observed yards. Pruning and felling are the most frequent management operations of trees in towns and this study analyzes the features of these operations carried out in 14 work sites. The operations were carried out either with aerial platforms (19 trees) or ascending the crown by tree-climbing (6 trees). The operations were sampled with time studies (12 trees for pruning and 13 for felling). Work time was measured from the beginning of operations to the transport of the residual biomass to the collection and loading point, using centesimal stopwatches and video recording. The total residual biomass was weighed or assessed. Total observation time amounted to 63.1 hours. The evaluation of the costs of each work site considered the fixed and the variable costs and the costs for the labor force. A Multiple Linear Regression model (statistics: determination coefficient R2: 0.74, adjusted R2: 0.67, p-value < 0.001) which utilizes four regressors easily evaluable before the work, was adopted to predict the gross time of the operations. This paper can contribute to optimize trees maintenance methods in urban sites and to assess the potential residual wood biomass attainable from urban forestry maintenance in the city of Rome.

Hunting for a Larger Diversity of Urban Trees in Western Europe—A Case Study from the Southern Caucasus

2019 ◽  
Vol 45 (5) ◽  
Author(s):  
Henrik Sjöman ◽  
Simon Hannus ◽  
Patrick Bellan ◽  
Tinatin Barblishvili ◽  
Tamaz Darchidze ◽  
...  
Keyword(s):  
Western Europe ◽  
Time Lag ◽  
Woody Species ◽  
Climate Scenario ◽  
Urban Environments ◽  
Urban Trees ◽  
Natural Habitats ◽  
Forest Reserves ◽  
In The Wild ◽  
Southern Caucasus

The primary aim of this study was to communicate a method for locating natural habitats where trees grows under conditions that are comparable to those in urban environments in terms of water stress. This is presented by analyzing five different forest reserves in the southern Caucasus (Republic of Georgia) where calculation of net water balance over the period of a year was conducted. This provided an insight into the drought at the sites during the growing season. The data were thereafter compared with similar calculations for five different cities in Western Europe in order to see if there were any matches in drought stress between the cities and the forest reserves. To extend the analysis, conditions in the five cities were assessed for high density and low density areas, and for the current climate and a future climate scenario. The comparisons revealed some matches between conditions in the forest reserves and those in different scenarios/areas in the cities. A secondary aim was to identify specific ecotypes in the wild demonstrating great potential to handle growing conditions similar to those in urban environments based on inventories of woody plants in the forest reserves. A total of 44 woody species were found in the forest reserve systems with a random distribution throughout the five study sites. Based on the commitments presented above a preliminary screening can be done where future tree selection focus can be directed towards highly promising species and ecotypes, which would undoubtedly limit the time lag before proper plant material can be released.

scholarly journals Urbanization alters the abundance and composition of predator communities and leads to aphid outbreaks on urban trees

2020 ◽  
Author(s):  
Dávid Korányi ◽  
Viktor Szigeti ◽  
László Mezőfi ◽  
Előd Kondorosy ◽  
Viktor Markó
Keyword(s):  
Urban Environments ◽  
Urban Trees ◽  
Dispersal Ability ◽  
Abundance Pattern ◽  
Acer Campestre ◽  
Generalist Species ◽  
Predator Prey ◽  
Habitat Generalist ◽  
Filtering Effect ◽  
Predatory Arthropods

Abstract Urbanization can affect arthropod abundance in different ways. While species with narrow habitat range and low dispersal ability often respond negatively to urban environments, many habitat generalist species with good dispersal ability reach high densities in city centers. This filtering effect of urban habitats can strongly influence predator-prey-mutualist interactions and may therefore affect the abundance of predatory and phytophagous species both directly and indirectly. Here, we assessed the effect of urbanization on aphids, predatory arthropods, and ants on field maple (Acer campestre) trees in and around the city of Budapest, Hungary. We used the percentage of impervious surfaces within a 500 m radius of each site as an index of the degree of urbanization. We found that the abundance of aphids increased with increasing level of urbanization. However, abundance of predatory arthropods and occurrence of poorly dispersing species within the predator community were negatively related to urbanization, and we identified these two independent factors as significant predictors of aphid abundances. The abundance of ants decreased with urbanization, and contrary to our expectations, did not affect the abundance pattern of aphids. Our results suggest that urbanization, by altering the abundance and composition of predator communities, can disrupt biological control of aphid populations, and thus may contribute to the aphid outbreaks on urban trees.

Sign in / Sign up

Export Citation Format

Share Document