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How do people perceive urban trees? Assessing likes and dislikes in relation to the trees of a city

Distribution of local plant knowledge in a recently urbanized area (Campeche District, Florianópolis, Brazil)

Influence of aboveground tree biomass, home age, and yard maintenance on soil carbon levels in residential yards

Foliar nitrogen characteristics of four tree species planted in New York City forest restoration sites

The effect of earthworms on roadway-derived Zn deposited as a surface layer in storm water retention basin soils

Variability of water quality, metals and phytoplankton community structure in urban stormwater ponds along a vegetation gradient

Characterizing air pollution patterns on multiple time scales in urban areas: a landscape ecological approach

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Foliar nitrogen characteristics of four tree species planted in New York City forest restoration sites

Content Provider	Springer Nature Link
Author	Falxa Raymond, Nancy Palmer, Matthew I. McPhearson, Timon Griffin, Kevin L.
Copyright Year	2014
Abstract	Urban forests provide important environmental benefits, leading many municipal governments to initiate citywide tree plantings. However, nutrient cycling in urban ecosystems is difficult to predict, and nitrogen (N) use in urban trees may be quite different from use in rural forests. To gain insight into these biogeochemical and physiological processes, we compared foliar N characteristics of several common northeastern deciduous tree species across four newly planted New York City afforestation sites as well as at the Black Rock Forest (BRF), a rural oak-dominated forest in the Hudson Highlands, New York. Foliage sampled at BRF was consistently depleted in $^{15}$N compared to urban foliage, and Amelanchier canadensis, Nyssa sylvatica, Prunus serotina, and Quercus rubra showed significant variation in foliar nitrogen isotope signatures (δ$^{15}$N) among the four urban sites. A. canadensis and P. serotina showed significantly greater ability to assimilate nitrate at BRF compared to urban sites, as measured through nitrate reductase activity (NRA). There were no significant differences in NRA among tree species growing at the four urban sites. Only P. serotina and N. sylvatica showed significant variation in foliar N concentrations (%N) both among urban sites and compared to BRF. The isotopic and %N data suggest greater N availability but less available nitrate at the newly planted urban sites compared to BRF, possibly due to different anthropogenic inputs or higher rates of nitrification and nitrate leaching at the recently planted urban sites compared to likely lower rates of N cycling in the intact rural forest. In addition, the tree species varied in their response to N availability at the urban sites, with potential implications for growth and survival. Understanding N cycling in urban systems and the associated physiological changes in vegetation is critical to a comprehensive evaluation of urban forest restoration, and may have implications for carbon sequestration and water quality issues associated with nitrate export, two important areas of management concern.
Starting Page	807
Ending Page	824
Page Count	18
File Format	PDF
ISSN	10838155
Journal	Urban Ecosystems
Volume Number	17
Issue Number	3
e-ISSN	15731642
Language	English
Publisher	Springer US
Publisher Date	2014-01-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Amelanchier canadensis Forest restoration Nitrate reductase Nyssa sylvatica Prunus serotina Quercus rubra Stable isotopes Urban Ecology Environmental Management Ecology Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Ecology Urban Studies

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Foliar nitrogen characteristics of four tree species planted in New York City forest restoration sites

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