Sensitivity of canopy phenology to local urban environmental characteristics in a tropical city
| Autor: | Angela Harris, Peter Kabano, Sarah Lindley |
|---|---|
| Přispěvatelé: | Department of Urban and Regional Planning and Geo-Information Management, UT-I-ITC-PLUS, Faculty of Geo-Information Science and Earth Observation |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Canopy
Tree canopy 010504 meteorology & atmospheric sciences Ecology biology Jacaranda mimosifolia Phenology UT-Hybrid-D Forestry Land cover 010501 environmental sciences biology.organism_classification 01 natural sciences ITC-HYBRID Geography Tabebuia rosea Urban climate ITC-ISI-JOURNAL-ARTICLE Impervious surface Environmental Chemistry Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Ecosystems, 1-15. Springer STARTPAGE=1;ENDPAGE=15;ISSN=1432-9840;TITLE=Ecosystems |
| ISSN: | 1432-9840 |
| Popis: | Canopy phenology is sensitive to variability in local environmental settings. In temperate climates, urban phenological processes and their determinants are relatively well understood. Equivalent understanding of processes in tropical urban settings is, however, less resolved. In this paper, we explore the influence of local urban environmental characteristics (that is, degree of urbanization, land cover and urban climate) on canopy phenology of two deciduous tree species (Jacaranda mimosifolia, n = 48, and Tabebuia rosea, n = 24) in a tropical city (Kampala, Uganda). Our study design involved ground monitoring and field sampling in 2017, with a focus on the dry season. We found that both species experienced significantly higher rates of canopy cover decline in heavily built-up neighborhoods (p Jacaranda was more sensitive to differences in the degree of urbanization than Tabebuia, both in terms of total percentage tree canopy cover (p p Jacaranda declined with increasing proportion of impervious cover (that is, roads and paved cover) and was positively related to relative humidity (p Jacaranda increased with the decreasing proportion of pervious land cover and as nighttime air temperature increased (p Tabebuia. These results provide new evidence of the effect of urbanization on canopy phenology of different tree species in the tropics. Such knowledge offers new insights into the spatial and temporal differences in the physiological functional traits of trees and also serves as a proxy for possible species responses under future climate change. |
| Databáze: | OpenAIRE |
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