Species diversity and seasonal abundance of Collembola in turfgrass ecosystems of North America |
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Authors: | Sophie Rochefort Fernand Therrien David J Shetlar Jacques Brodeur |
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Institution: | a Centre de Recherche en Horticulture, Pavillon de l’Envirotron, Université Laval, Sainte-Foy, Que., Canada G1K 7P4 b 132, rue Legault, Laval, Que., Canada H7L 2R4 c Ohio State University Entomology Extension Building, 1991 Kenny Rd, Columbus, OH 43210, USA d Institut de recherche en biologie végétale, Département des sciences biologiques, Université de Montréal, 4101 rue Sherbrooke est, Montréal, Que., Canada H1X 2B2 |
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Abstract: | In North America, lawns are the most widely used plantings in urban areas. However, despite the ubiquity and ecological roles of turfgrass soil arthropods, many aspects of their composition and diversity have been neglected. We investigated assemblages of Collembola and their seasonal fluctuations in a newly established lawn and a 10-year old lawn located in Québec City, Canada. Collembola were sampled every month from May to October in 2003 and 2004 by extracting individuals from soil cores using a modified Berlese funnel. A total of 21 species representing 17 genera and nine families were identified. Four species are new records for the province of Quebec: Brachystomella parvula, Mesaphorura simplex, Isotomodes productus, and Sphaeridia pumilis. Turfgrass supports mainly three cosmopolitan species from the Isotomidae family, which represent 73.5% of all Collembola collected during the survey: Parisotoma notabilis, Isotoma viridis, and Cryptopygus thermophilus. Collembola were twice more abundant at the newly established site, but there were minor differences in species diversity between sites and years. No clear patterns of seasonal relative abundance were observed for the whole Collembola populations, as well as for the three dominant species. Turfgrass ecosystem provides a suitable habitat for epedaphic and hemiedaphic Collembola, such as the Isotomidae, most likely because turfgrass mowing and natural leaf, stem and root replacement produces large amounts of decaying organic matter. |
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Keywords: | Soil microarthropods Biodiversity Seasonal fluctuation Urban ecosystem |
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