caa a22 4500 467885761 CHVBK 20180406152734.0 cr unu---uuuuu 170328e20060601xx s 000 0 eng 10.1007/s10021-006-0131-0 doi (NATIONALLICENCE)springer-10.1007/s10021-006-0131-0 Arthropod Diversity and Community Structure in Relation to Land Use in the Mekong Delta, Vietnam [Elektronische Daten] [Andrew Wilby, La Lan, Kong Heong, Nguyen Huyen, Nguyen Quang, Nguyen Minh, Matt. Thomas] Declining biodiversity in agro-ecosystems, caused by intensification of production or expansion of monocultures, is associated with the emergence of agricultural pests. Understanding how land-use and management control crop-associated biodiversity is, therefore, one of the key steps towards the prediction and maintenance of natural pest-control. Here we report on relationships between land-use variables and arthropod community attributes (for example, species diversity, abundance and guild structure) across a diversification gradient in a rice-dominated landscape in the Mekong delta, Vietnam. We show that rice habitats contained the most diverse arthropod communities, compared with other uncultivated and cultivated land-use types. In addition, arthropod species density and Simpson's diversity in flower, vegetable and fruit habitats was positively related to rice cover in the local landscape. However, across the landscape as a whole, reduction in heterogeneity and the amount of uncultivated cover was associated, generally, with a loss of diversity. Furthermore, arthropod species density in tillering and flowering stages of rice was positively related to crop and vegetation richness, respectively, in the local landscape. Differential effects on feeding guilds were also observed in rice-associated communities with the proportional abundance of predators increasing and the proportional abundance of detritivores decreasing with increased landscape rice cover. Thus, we identify a range of rather complex, sometimes contradictory patterns concerning the impact of rice cover and landscape heterogeneity on arthropod community attributes. Importantly, we conclude that that land-use change associated with expansion of monoculture rice need not automatically impact diversity and functioning of the arthropod community. Springer Science+Business Media, Inc., 2006 community assembly nationallicence agroecology nationallicence rice nationallicence landscape heterogeneity nationallicence biodiversity nationallicence pest control nationallicence Wilby Andrew Department of Agricultural Sciences, Imperial College London, Wye Campus, TN25 5AH, Wye, Kent, UK aut Lan La Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut Heong Kong International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines aut Huyen Nguyen Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut Quang Nguyen Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut Minh Nguyen Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut Thomas Matt Department of Agricultural Sciences, Imperial College London, Wye Campus, TN25 5AH, Wye, Kent, UK aut Ecosystems Springer-Verlag; www.springer-ny.com 9/4(2006-06-01), 538-549 1432-9840 9:4<538 2006 9 10021 https://doi.org/10.1007/s10021-006-0131-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10021-006-0131-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wilby Andrew Department of Agricultural Sciences, Imperial College London, Wye Campus, TN25 5AH, Wye, Kent, UK aut NATIONALLICENCE 700 1- Lan La Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut NATIONALLICENCE 700 1- Heong Kong International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines aut NATIONALLICENCE 700 1- Huyen Nguyen Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut NATIONALLICENCE 700 1- Quang Nguyen Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut NATIONALLICENCE 700 1- Minh Nguyen Institute of Agricultural Sciences of South Vietnam, 121 Nguyen Binh Kiem St., Ho Chi Minh City, District 1, Vietnam aut NATIONALLICENCE 700 1- Thomas Matt Department of Agricultural Sciences, Imperial College London, Wye Campus, TN25 5AH, Wye, Kent, UK aut NATIONALLICENCE 773 0- Ecosystems Springer-Verlag; www.springer-ny.com 9/4(2006-06-01), 538-549 1432-9840 9:4<538 2006 9 10021 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer