Featured Research

from universities, journals, and other organizations

Two new studies show why biodiversity is important for pollination services in California almond

Date:
January 14, 2013
Source:
Pensoft Publishers
Summary:
Scientist show why biodiversity benefits California almond pollination. The presence of wild bees was found to alter the behavior of honey bees and improve their pollination effectiveness. Furthermore, wild bees buffered pollination under high winds and wild pollinators visited the parts of the almond trees that were less favored by honey bees. These findings help explain why orchards where wild bees are present have greater fruit set.

This image shows a blue orchard bee (Osmia lignaria) and a honey bee (Apis mellifera) foraging in almond.
Credit: C. Brittain; CC-BY 3.0

Agricultural demand for pollination is growing more quickly than the supply of honey bees, the dominant species managed for crop pollination. Increasing the efficiency of pollination represents a way of increasing crop yield without any increase in agricultural intensity or area. A study recently published in the Proceedings of the Royal Society B: Biological Sciences, shows that the pollination effectiveness of honey bees in California almond orchards was greater in the presence of other bees.

Almond is a crop highly dependent on honey bee pollination and is a $3 billion industry in California. The study by researchers in Germany at Leuphana University of Lόneburg and California at UC Berkeley and Davis found that where other species of bees were present, honey bee behaviour changed and their pollination effectiveness was greater than in orchards where other bees were absent. Furthermore, orchards with wild bees had a greater proportion fruit set. These findings show that wild pollinators not only contribute directly to almond pollination, but also indirectly through increasing the pollination service provided by the honey bees.

A second study in the same system published in Global Change Biology found two other mechanisms by which pollinator diversity improved pollination service to almond. Firstly, they found that honey bees preferred to visit flowers in the top parts of the almond trees. Where wild pollinators were present, they often visited the lower parts of the trees, filling the gap in pollination service left by the honey bees. Secondly, in high winds, orchards with only honey bees present had almost no pollination service as the honey bees were not flying. In orchards with a diversity of pollinators, pollination service was buffered to an extent by the wild bees.

During high winds, the wild bees were still observed visiting almond flowers. Wild pollinators can therefore help sustain pollination service under extreme weather conditions, when the service by honey bees declines. This is particularly important in almond as it flowers early in the year when the weather conditions can be unfavourable for bee flight. The findings presented in the two articles highlight different ways biodiversity is important for pollination service.

The researchers presenting the studies are Alexandra-Maria Klein and Claire Brittain from Leuphana University of Lόneburg, Claire Kremen from UC Berkeley and Neal Williams from UC Davis.


Story Source:

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


Journal References:

  1. C. Brittain, N. Williams, C. Kremen, A.-M. Klein. Synergistic effects of non-Apis bees and honey bees for pollination services. Proceedings of the Royal Society B: Biological Sciences, 2013; 280 (1754): 20122767 DOI: 10.1098/rspb.2012.2767
  2. Claire Brittain, Claire Kremen, Alexandra-Maria Klein. Biodiversity buffers pollination from changes in environmental conditions. Global Change Biology, 2013; 19 (2): 540 DOI: 10.1111/gcb.12043

Cite This Page:

Pensoft Publishers. "Two new studies show why biodiversity is important for pollination services in California almond." ScienceDaily. ScienceDaily, 14 January 2013. <www.sciencedaily.com/releases/2013/01/130114092753.htm>.
Pensoft Publishers. (2013, January 14). Two new studies show why biodiversity is important for pollination services in California almond. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2013/01/130114092753.htm
Pensoft Publishers. "Two new studies show why biodiversity is important for pollination services in California almond." ScienceDaily. www.sciencedaily.com/releases/2013/01/130114092753.htm (accessed April 19, 2014).

Share This



More Plants & Animals News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) — Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
First Ever 'Female Penis' Discovered In Animal Kingdom

First Ever 'Female Penis' Discovered In Animal Kingdom

Newsy (Apr. 18, 2014) — Not only are these newly discovered bugs' sex organs reversed, but they also mate for up to 70 hours. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) — A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. Video provided by Newsy
Powered by NewsLook.com
The Great British Farmland Boom

The Great British Farmland Boom

Reuters - Business Video Online (Apr. 17, 2014) — Britain's troubled Co-operative Group is preparing to cash in on nearly 18,000 acres of farmland in one of the biggest UK land sales in decades. As Ivor Bennett reports, the market timing couldn't be better, with farmland prices soaring over 270 percent in the last 10 years. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins