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Urban Ecosystems

, Volume 22, Issue 3, pp 593–607 | Cite as

Woody species and trait diversity-functional relations of green spaces in Kumasi, Ghana

  • Bertrand Festus NeroEmail author
Article
  • 97 Downloads

Abstract

Urban biodiversity is essential to creating resilient and sustainable cities. Nevertheless, there is paucity of data on the characterization of microhabitat effects on species/trait diversity and diversity-functional relationships in urban landscapes especially in developing countries. The objectives of this study were to; 1) analyze tree species diversity and composition of urban green space (UGS) types and urban zones, (2) describe the life history diversity of UGS types and urban zones and 3) examine the links between species and life history trait diversity and species productivity (carbon storage) in Kumasi, Ghana. Stratified random sampling was adopted in surveying 470 sampling plots and six streets of lengths ranging from 50 m to 1 km. About 176 tree species in 46 families were recorded within Kumasi. About 96 species were in an adjacent natural forest located at the outskirts of the city. Home gardens, institutional compounds, and public parks had the highest species richness of 76, 75 and 71, respectively while urban rangelands and farmlands were the least species rich with 6 and 23, respectively. Species richness (S) in the peri-urban (LDUZ, S = 142) and core urban (HDUZ, S = 108) were significantly different (Χ2 = 15.7, p < 0.0001, n = 1). Native species richness was lowest in the core urban area and highest in the natural forest. Pioneers and anthropochory dispersed species were the most abundant, suggesting that this urban landscape is shaped by both environment and social filters. Tree species diversity and distribution depend on the type of UGS and portrays a perturbed landscape in the early seres of succession with the overall ecosystem function sustained by both species and life history trait diversities. The implications of these findings for improving urban biodiversity conservation and overall urban sustainability are discussed.

Keywords

Richness Seres Traits Pioneer Productivity 

Notes

Acknowledgements

Funding for this project was provided by Federal Ministry of Economic Corporation via the German Academic Exchange Service and Foundation Fiat Panis. I am grateful to Drs. M. Denich, D. Callo-Concha, and C. Schmitt for their initial review and useful criticism of the manuscript. Many thanks to Drs. N. Agbo and B. Campion of the Kwame Nkrumah University of Science and Technology for their useful advice and for releasing some of their students to assist with data collection. My gratitude to all others who assisted with field data collection and plant identification. Special appreciations to the anonymous reviewers for their comments and inputs.

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Authors and Affiliations

  1. 1.Department of Forest Resources Technology, FRNRKwame Nkrumah University of Science and Technology, PMBKumasiGhana

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