scholarly journals Long-term ecology of orchid bees in an urban forest remnant

Apidologie ◽  
2014 ◽  
Vol 46 (3) ◽  
pp. 359-368 ◽  
Author(s):  
André Nemésio ◽  
Leandro M. Santos ◽  
Heraldo L. Vasconcelos
Keyword(s):  
Urban Forest ◽  
Orchid Bees ◽  
Forest Remnant

Demographic parameters of the squirrel glider (Petaurus norfolcensis) in an urban forest remnant

2017 ◽  
Vol 65 (3) ◽  
pp. 141
Author(s):  
David J. Sharpe ◽  
Ross L. Goldingay
Keyword(s):  
Urban Forest ◽  
Local Population ◽  
Adult Survival ◽  
First Year ◽  
Detailed Knowledge ◽  
Apparent Survival ◽  
Key Population ◽  
Forest Remnant ◽  
Squirrel Glider ◽  
Urban Matrix

The effective management of species requires detailed knowledge of key population parameters. A capture–mark–recapture study of the squirrel glider (Petaurus norfolcensis) was conducted in an urban forest remnant in Brisbane, south-east Queensland. A total of 187 adult gliders (96 females, 91 males) was captured 620 times, in 19 sessions over a 4-year period. A Cormack–Jolly–Seber model was employed to estimate adult survival and abundance. Factors that may affect survival (e.g. sex, year, season) were included in population models. The overall probability of annual apparent survival was 0.49 ± 0.08. The capture probability over the duration of the study was 0.38 ± 0.03. The size of the local population was highest in the first year of the study (70–113 individuals) but then declined and generally remained low in the last two years. Apparent survival may include an unknown component of dispersal. However, our study area was mostly surrounded by a hostile urban matrix, so the effect of dispersal may have been minimal. Further studies that assess the survival of squirrel gliders are needed to assess the extent to which this parameter varies among localities.

A Private Tree By-Law’s Contribution to Maintaining a Diverse Urban Forest: Exploring Homeowners’ Replanting Compliance and the Role of Construction Activities in Toronto, Canada

2022 ◽  
Vol 48 (1) ◽  
pp. 9-26
Author(s):  
Tenley Conway ◽  
Jihan Khatib ◽  
Janele Tetreult ◽  
Andrew Almas
Keyword(s):  
Urban Forest ◽  
Good Health ◽  
Diverse Species ◽  
Tree Survival ◽  
Property Owners ◽  
Construction Activity ◽  
Key Driver

Many municipalities are working to protect and grow their urban forest, including adopting private tree regulations. Such regulations typically require property-owners to apply for a permit to remove trees and, if the permit is granted, plant replacement trees. Even with such regulations, many private trees are removed each year, particularly on residential property. Property-level construction activity, including expanding building footprints, replacing an older home with a new one, and increasing hardscaping, is emerging as a key driver of residential tree loss. This study addresses whether homeowners who receive a permit to remove one or more trees comply with the requirement to plant replacement trees to better understand the effect of private tree regulation. We explore this question through a written survey of homeowners who received a tree removal permit and site visits in Toronto (Ontario, Canada). While 70% of all survey participants planted the required replacement trees 2 to 3 years after receiving the permit, only 54% of homeowners whose permit was associated with construction planted. Additionally, most replacement trees were in good health but were dominated by a few genera. We also found significant differences in replacement planting and tree survival across the city’s 4 management districts. This study highlights that if resources supporting private tree regulations are limited, tree permits associated with construction should be prioritized for follow-up. Additionally, guidance about diverse species to plant should be communicated to ensure that private tree regulations are supporting the long-term protection of the urban forest.

Survival of Mount Eden Bush, an urban forest remnant in Auckland, New Zealand

1999 ◽  
Vol 5 (2) ◽  
pp. 83 ◽  
Author(s):  
M. C. Smale ◽  
R. O. Gardner
Keyword(s):  
New Zealand ◽  
Urban Forest ◽  
Basal Area ◽  
Ground Layer ◽  
Indigenous Species ◽  
Basaltic Lava ◽  
Vascular Flora ◽  
Ligustrum Lucidum ◽  
Seed Sources ◽  
Forest Remnant

Mount Eden Bush is the only reserved fragment of primary broadleaved forest on basaltic lava on the Auckland isthmus in northern New Zealand. An edaphic variant of northern coastal short forest, the reserved forest of 0.7 ha is approximately 1-2% of the estimated original <50 ha tract and contains 84% of the vascular species recorded in it. The canopy is dominated by Griselinia lucida, Litsea calicaris, and Pseudopanax lessonii, the subcanopy by Melicytus ramiflorus, and the understorey by Coprosma macrocarpa and Macropiper excelsum. A depauperate vascular flora compared with other basaltic lava forests in the district may result from long isolation of the original tract in a deforested landscape remote from seed sources. Low tree density, low basal area, and a strongly rupestral/xerophytic ground layer reflect the drought-prone lava substrate (mean boulder cover 38%). It has probably been dominated by the adventive trailing herb Tradescantia fluminensis for >60 years (mean cover 38%), which reduces abundance of woody native seedlings and cover of native ground layer herbaceous species. Over two-fifths of the vascular flora is now alien native (all planted) or adventive, the latter almost all garden escapes from the surrounding suburban matrix and including many of the most threatening weeds of urban Auckland. Despite widespread T. fluminensis, currently important canopy/subcanopy and understorey dominants appear to be replacing themselves. In the absence of intervention, however, indigenous species are likely to become less important in the canopy and adventive Ligustrum lucidum and Prunus serrulata more important; the latter two species are respectively the second and third commonest canopyforming species regenerating in gaps. Future extinction of some indigenous species with critically small populations cannot be ruled out.

scholarly journals First record of Eumops perotis (Schinz, 1821) (Chiroptera, Molossidae) from the Cerrado of Mato Grosso do Sul, Central-West Brazil

Check List ◽  
2020 ◽  
Vol 16 (3) ◽  
pp. 759-764
Author(s):  
Jaire Marinho Torres ◽  
Grasiela Edith de Oliveira Porfirio ◽  
Priscila Ikeda ◽  
Marcelo Oscar Bordignon ◽  
Filipe Martins Santos ◽  
...  
Keyword(s):  
Urban Forest ◽  
First Record ◽  
The State ◽  
Mato Grosso ◽  
West Region ◽  
Forest Remnant ◽  
Mato Grosso Do Sul

The Greater Bonneted Bat, Eumops perotis (Schinz, 1821), is widely distributed in Brazil, but valid records of its occurrence&nbsp;in Mato Grosso do Sul, Central-West Region, are still scarce and limited to the Pantanal portion of the state.&nbsp;Here, we report the first record of E. perotis from the Cerrado portion of Mato Grosso do Sul, based on specimens&nbsp;collected in an urban forest remnant in the municipality of Campo Grande. These specimens add to the records of E.&nbsp;perotis in the Cerrado of the Central-West and fill gaps in the distribution of this species.

scholarly journals The hummingbird community and their floral resources in an urban forest remnant in Brazil

2011 ◽  
Vol 71 (3) ◽  
pp. 611-622 ◽  
Author(s):  
LC. Rodrigues ◽  
AC. Araujo
Keyword(s):  
Urban Forest ◽  
Floral Resources ◽  
Mato Grosso ◽  
Mean Values ◽  
Nectar Volume ◽  
Forest Remnant ◽  
Flower Density ◽  
Unidentified Species ◽  
Temporal And Spatial ◽  
Mato Grosso Do Sul

The temporal and spatial resource use among hummingbirds was studied over 13 months in an urban forest remnant (Prosa State Park: PSP) in Campo Grande, Mato Grosso do Sul, Brazil. Hummingbird visitation was recorded at three ornithophilous and eleven non-ornithophilous species. Flower density was roughly constant during the study period, with the density of non-ornithophilous flowers being higher than that of ornithophilous ones. Mean values of nectar volume and concentration were similar between ornithophilous and non-ornithophilous species. Eight hummingbird species were observed at PSP: Amazilia fimbriata, Anthracothorax nigricollis, Chlorostilbon lucidus, Eupetomena macroura, Hylocharis chrysura, Florisuga fusca, Thalurania furcata and an unidentified species. Hummingbird visit frequencies to ornithophilous and non-ornithophilous flowers were similar. However, some non-ornithophilous species received a higher number of visits, which seems to be related to their large number of open flowers per plant per day. The number of feedings bouts of hummingbirds increased with the total number of flowers observed per focal plant. All recorded species of hummingbirds visited non-ornithophilous flowers, predominantly melittophilous and generalised entomophilous flowers. Hummingbird species recorded at PSP may be viewed as generalists, visiting a large number of non-ornithophilous species. Despite being an urban forest, PSP is relatively rich in hummingbird species, suggesting that it provides important shelter and foraging sites for hummingbirds in such an environment.

Long-term changes in tree species composition in the Dinaric mountain forests of Slovenia

2003 ◽  
Vol 79 (2) ◽  
pp. 227-232 ◽  
Author(s):  
Andrej Boncina ◽  
Franc Gaspersic ◽  
Jurij Diaci
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
European Beech ◽  
Anthropogenic Factors ◽  
Silver Fir ◽  
Tree Species Composition ◽  
Virgin Forest ◽  
Forest Remnant ◽  
The Impact

This study utilizes data from long-term research sites in managed fir-beech forests (Hrusica, Leskova dolina and Rog) and a virgin forest remnant (Rajhenav), used as a reference site. Data obtained from old forest management plans and forest inventories were analysed. The results of the study support the hypothesis that two main tree species—silver fir (Abies alba Mill.) and European beech (Fagus sylvatica L.)—alternate site dominance. The causes of species dominance alternation include both natural processes and anthropogenic factors, in particular silvicultural practices and the impact of ungulates. More than a hundred years ago, European beech dominated stand volume. The proportion of silver fir increased until 1940–1970 when a gradual decrease started. All indicators suggest that the proportion of silver fir will decrease further in the coming decades. Key words: tree species composition alternation, diameter distribution, silver fir, European beech, forest history, forest planning, managed forests, virgin forest remnant

scholarly journals The Threshold of Ecosystem Services Assessment in Urban Forest for Learning Outcomes in Higher Education: Mahidol University (Kanchanaburi Campus)

2020 ◽  
Author(s):  
Kacharat Phormkhunathon
Keyword(s):  
Higher Education ◽  
Sustainable Development ◽  
Ecosystem Services ◽  
Problem Solving ◽  
Learning Outcomes ◽  
Urban Forest ◽  
Education Institution ◽  
Fundamental Importance ◽  
Higher Education Institution

My research emphasizes involvement the relation linked biodiversity (focuses mammals and birds) and ecosystem services which the first step important before integrating into the part other of ecosystem services assessment. Its essence development knowledge and competency (ability and mentality) usefully support enhancing problem-solving in a facet challenge inevitable of sustainable development in the stepping-stone of the higher education institution. However, this lays down the fundamental importance of providing development continues to become implementation long-term in sustainable development in higher education of Mahidol University, Thailand.

scholarly journals Why Opt-in to a Planting Program? Long-term Residents Value Street Tree Aesthetics

2015 ◽  
Vol 41 (6) ◽  
Author(s):  
Dexter Locke ◽  
Lara Roman ◽  
Colleen Murphy-Dunning
Keyword(s):  
Urban Forest ◽  
Urban Forestry ◽  
Environmental Benefits ◽  
Tree Planting ◽  
Future Research ◽  
Capital Investments ◽  
New Haven ◽  
Street Trees ◽  
Street Tree

Many cities are making substantial capital investments in urban tree planting. Residents play active and diverse roles in enhancing and protecting the urban forest, and are therefore critical to many municipal-level policy objectives. The way residents perceive and value the urban forest can have implications for achieving urban forestry goals through residents and volunteers. However, urban residents are not a monolithic block or homogenous category; instead, they have diverse opinions, needs, and constraints. Moreover, relatively little is known about how residents hear about available resources, such as free trees, and decide to ‘opt-in’ to tree planting initiatives, choosing to plant and maintain trees on or near their properties. The focus of this study was to address three questions about participation in a request-driven program that provides free street trees to residents of New Haven, Connecticut, U.S.: 1) Who requests trees through this program? 2) How did the requesters hear about this program? 3) Why did residents request free street trees? Survey respondents were primarily long-term residents of New Haven; mostly learned about the opportunity from their neighbors; and requested a street tree to replace a removed tree, because they value the aesthetics, and to a lesser extent the environmental benefits. Future research should systematically investigate differences between participants and non-participants in local tree planting initiatives, exploring possible trends across cities and programs. Such studies would identify opportunities and barriers to engaging private residents in efforts aimed at increasing canopy.

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