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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://www.nytimes.com/2013/07/23/science/loss-of-bees-can-affect-plants-ability-to-reproduce-study-finds.html?_r=0">http://www.nytimes.com/2013/07/23/science/loss-of-bees-can-affect-plants-ability-to-reproduce-study-finds.html?_r=0</a><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>July 22, 2013<o:p></o:p></span></font></p>
<h1><nyt_headline version="1.0" type=" "><b><font size=6 face="Times New Roman"><span
style='font-size:24.0pt'>Loss of Bees Can Affect Plants’ Ability to
Reproduce, Study Finds<o:p></o:p></span></font></b></h1>
<h6><b><font size=1 face="Times New Roman"><span style='font-size:7.5pt'><nyt_byline></nyt_headline>By
<a
href="http://topics.nytimes.com/top/reference/timestopics/people/g/james_gorman/index.html"
title="More Articles by JAMES GORMAN"><span itemprop="author creator" itemscope=""
itemtype="http://schema.org/Person" itemid="http://topics.nytimes.com/top/reference/timestopics/people/g/james_gorman/index.html"><span
itemprop=name>JAMES GORMAN</span></a></span><o:p></o:p></span></font></b></h6>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'></nyt_byline><nyt_text><nyt_correction_top></nyt_correction_top>The
loss of bees and other pollinators around the world is already cause for
concern. Now two researchers who studied bumblebees in <st1:State w:st="on"><st1:place
w:st="on">Colorado</st1:place></st1:State> have added a new worry, identifying
the perils of bumblebee infidelity not to other bees, but to their floral
partners. <o:p></o:p></span></font></p>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Berry J. Brosi, an assistant professor at Emory
University in Atlanta, and Heather M. Briggs, a graduate student at the
University of California, Santa Cruz, both in environmental science, studied 20
plots of meadow at the Rocky Mountain Biological Laboratory in Crested Butte,
Colo., each about 22 yards on a side. <o:p></o:p></span></font></p>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>With help from a number of students they tested what
happened if they removed the most populous bumblebee species by catching them
with butterfly nets, and patrolled the plots to keep them out. <o:p></o:p></span></font></p>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>The prevailing view, Dr. Brosi said, based on
mathematical models, was that all the other bumblebee species would take up the
slack and the plants would do fine. But that was not so for the tall larkspur,
a lovely purple wildflower. <o:p></o:p></span></font></p>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Researchers found that the remaining bumblebees became
less faithful to one flower species than they had been before the removal of
the most numerous bees. They took advantage of less competition to play the
field, or the plot. <o:p></o:p></span></font></p>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>All well and good for the bees, at least in the short
term, but the larkspur, which the researchers targeted for this study, did not
do as well because bees that once would have stuck with the larkspur now
carried pollen from a variety of other flowers when they visited their once
exclusive floral partner. <o:p></o:p></span></font></p>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>But the larkspur needs pollen from its own species to
reproduce and suffered for the bumblebees’ wayward ways. <o:p></o:p></span></font></p>
<p itemprop=articleBody><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Because of the unfaithful bees, the researchers
reported Monday in <a href="http://www.pnas.org/cgi/doi/10.1073/pnas.1307438110">Proceedings
of the National Academy of Sciences</a>, plants produced about 30 percent less
seed. The finding, they report, shows a surprising effect from a loss of
biodiversity that could have implications for a variety of ecosystems. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Jennifer Tsang</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Marketing Director</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Pollinator Partnership</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a href="http://www.pollinator.org">www.pollinator.org</a> </span></font><o:p></o:p></p>
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