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Small patches of native plants help boost pollination services in large farms

Date:
December 5, 2012
Source:
Pensoft Publishers
Summary:
Isolation from natural habitat can lead to productivity losses due to lack of pollinators. Introducing areas of native vegetation within cropland has been proposed as a way to supplement pollinators, but this measure is perceived by farmers to carry costs that outweigh production-benefits. This study shows that small patches of native flowers, that do not compromise production area, increase mango pollination services in South Africa. Such measure allows increases in production without further expanding cropland.

Aloe greatheadii, a native plant common in natural areas near mango plantation, being visited by a honeybee when planted within mango fields.
Credit: Luisa Carvalheiro/CC-BY 3.0

A combined team of scientists from Europe and South Africa (Luísa G. Carvalheiro (University of Leeds, UK & Naturalis Biodiversity Research Centre, Netherlands), Colleen Seymour and Ruan Veldtman (SANBI, South Africa) and Sue Nicolson (University of Pretoria)) have discovered that pollinator services of large agriculture fields can be enhanced with a simple cost-effective measure, that involves the creation of small patches of native plants within fruit orchards.

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"Mango farmers in South Africa are aware of the pollination limitation of this crop and invest a substantial amount of money renting honeybee hives to supplement pollination within the large farmland areas. However, while during blooming season, mango fields can have millions of open flowers, those flowers are not very attractive to neither local wild pollinators nor managed honeybees." says the lead author Luísa Carvalheiro.

While pesticide use and isolation from natural habitat lead to declines in flying visitors and in mango production (kg of marketable fresh fruit), the results of this study show that the presence of small patches of native flowers within large farms can ameliorate such negative impacts, increasing the number of visits of honeybee and wild pollinators to mango, and consequently mango production. As these patches do not compromise production areas and its maintenance has very low costs, such native flower compensation areas represent a profitable management measure for farmers, increasing cost-effectiveness of cropland. Further studies are needed to determine the optimum size and flower composition of such flower areas that maximizes benefits.

However, the effectiveness of flower patches is likely dependent on the preservation of remaining patches of natural habitat and judicious use of pesticides. The study was published in Journal of Applied Ecology, fieldwork was funded by SANBI -- South African National Biodiversity Institute and data analyses by the project STEP -- 'Status and Trends of European Pollinators' that is funded by the European Union Framework Program 7.


Story Source:

The above story is based on materials provided by Pensoft Publishers. Note: Materials may be edited for content and length.


Journal Reference:

  1. Luísa G. Carvalheiro, Colleen L. Seymour, Susan W. Nicolson, Ruan Veldtman. Creating patches of native flowers facilitates crop pollination in large agricultural fields: mango as a case study. Journal of Applied Ecology, 2012; 49 (6): 1373 DOI: 10.1111/j.1365-2664.2012.02217.x

Cite This Page:

Pensoft Publishers. "Small patches of native plants help boost pollination services in large farms." ScienceDaily. ScienceDaily, 5 December 2012. <www.sciencedaily.com/releases/2012/12/121205103008.htm>.
Pensoft Publishers. (2012, December 5). Small patches of native plants help boost pollination services in large farms. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2012/12/121205103008.htm
Pensoft Publishers. "Small patches of native plants help boost pollination services in large farms." ScienceDaily. www.sciencedaily.com/releases/2012/12/121205103008.htm (accessed October 31, 2014).

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