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Re: [beemonitoring] Bees vs. other pollinators

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  • Robert Jean
    Ken, The following is a good paper on pollinator efficiency; however it shows the generalist flies to be as effective as the specialist Andrena erigeniae on
    Message 1 of 11 , Dec 15, 2011
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      Ken,
      The following is a good paper on pollinator efficiency; however it shows the generalist flies to be as effective as the specialist Andrena erigeniae on flowers of Claytonia virginica (Spring beauty). Motten, A. F., D. R. Campbell, et al. (1981). "Pollination effectiveness of specialist and generalist visitors to a North Carolina population of Claytonia virginica." Ecology 62(5): 1278-1287. No info on geographic variation here though
      Rob Jean


      From: Kenneth W McCravy <KW-McCravy@...>
      To: beemonitoring@yahoogroups.com
      Sent: Thursday, December 15, 2011 2:19 PM
      Subject: [beemonitoring] Bees vs. other pollinators

       
      Hi,

      I've heard it stated that bees are the most important group of pollinators. Can anyone suggest published studies comparing bees with other groups of pollinators in terms of efficiency, number of plant species pollinated, or other measures, and how this might vary geographically (maybe patterns related to latitude or altitude)?

      Thanks!
      Ken

      Kenneth W. McCravy, Ph.D.
      Professor
      Department of Biological Sciences
      Western Illinois University
      1 University Circle
      Macomb, IL 61455
      Phone: (309) 298-2160
      Fax: (309) 298-2270
      Email: KW-McCravy@...


    • Stoner, Kimberly
      I have attached a couple of review articles on the importance of dipteran pollinators. These have references to some comparisons between bees and flies.
      Message 2 of 11 , Dec 15, 2011

      I have attached a couple of review articles on the importance of dipteran pollinators.  These have references to some comparisons between bees and flies.  Hopefully you will be able to open them – if not, let me know and I’ll send the references.

       

      Kim Stoner

       

      From: beemonitoring@yahoogroups.com [mailto:beemonitoring@yahoogroups.com] On Behalf Of Robert Jean
      Sent: Thursday, December 15, 2011 3:06 PM
      To: Kenneth W McCravy; beemonitoring@yahoogroups.com
      Subject: Re: [beemonitoring] Bees vs. other pollinators

       

       

      Ken,

      The following is a good paper on pollinator efficiency; however it shows the generalist flies to be as effective as the specialist Andrena erigeniae on flowers of Claytonia virginica (Spring beauty). Motten, A. F., D. R. Campbell, et al. (1981). "Pollination effectiveness of specialist and generalist visitors to a North Carolina population of Claytonia virginica." Ecology 62(5): 1278-1287. No info on geographic variation here though

      Rob Jean

       


      From: Kenneth W McCravy <KW-McCravy@...>
      To: beemonitoring@yahoogroups.com
      Sent: Thursday, December 15, 2011 2:19 PM
      Subject: [beemonitoring] Bees vs. other pollinators

       

      Hi,

      I've heard it stated that bees are the most important group of pollinators. Can anyone suggest published studies comparing bees with other groups of pollinators in terms of efficiency, number of plant species pollinated, or other measures, and how this might vary geographically (maybe patterns related to latitude or altitude)?

      Thanks!
      Ken

      Kenneth W. McCravy, Ph.D.
      Professor
      Department of Biological Sciences
      Western Illinois University
      1 University Circle
      Macomb, IL 61455
      Phone: (309) 298-2160
      Fax: (309) 298-2270
      Email: KW-McCravy@...

       

    • Cane, Jim
      Bob, Ken and others- I agree, that is a splendid study, a great one for teaching and discussion. Something that most folks overlook in that paper, however,
      Message 3 of 11 , Dec 15, 2011
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        Bob, Ken and others- I agree, that is a splendid study, a great one for teaching and discussion.  Something that most folks overlook in that paper, however, but Motten reports, is that the specialist bee deposits more pollen than the fly when either is coming from a pistillate flower (that is, pollen carryover is great with the specialist).  It is a nice nuance, I think.

         

        At the community level (or sometimes even at the level of a floral guild), the challenge becomes demonstrating that a species 9and sex sometimes) of floral visitor indeed pollinates (even more work to quantify), a very daunting task if you have many plant species in a local community.  Jordi Bosch and colleagues in Barcelona Spain are gradually working up such a data set, but it is taking many field seasons to assemble.

         

        yours

         

        jim

         

        ===============================

        James H. Cane

        USDA-ARS Bee Biology and Systematics Lab

        Utah State University, Logan, UT 84322 USA

        tel: 435-797-3879   FAX: 435-797-0461

        email: Jim.Cane@... 

        web page: www.ars.usda.gov/npa/beelab

         

        From: beemonitoring@yahoogroups.com [mailto:beemonitoring@yahoogroups.com] On Behalf Of Robert Jean
        Sent: Thursday, December 15, 2011 1:06 PM
        To: Kenneth W McCravy; beemonitoring@yahoogroups.com
        Subject: Re: [beemonitoring] Bees vs. other pollinators

         

         

        Ken,

        The following is a good paper on pollinator efficiency; however it shows the generalist flies to be as effective as the specialist Andrena erigeniae on flowers of Claytonia virginica (Spring beauty). Motten, A. F., D. R. Campbell, et al. (1981). "Pollination effectiveness of specialist and generalist visitors to a North Carolina population of Claytonia virginica." Ecology 62(5): 1278-1287. No info on geographic variation here though

        Rob Jean

         


        From: Kenneth W McCravy <KW-McCravy@...>
        To: beemonitoring@yahoogroups.com
        Sent: Thursday, December 15, 2011 2:19 PM
        Subject: [beemonitoring] Bees vs. other pollinators

         

        Hi,

        I've heard it stated that bees are the most important group of pollinators. Can anyone suggest published studies comparing bees with other groups of pollinators in terms of efficiency, number of plant species pollinated, or other measures, and how this might vary geographically (maybe patterns related to latitude or altitude)?

        Thanks!
        Ken

        Kenneth W. McCravy, Ph.D.
        Professor
        Department of Biological Sciences
        Western Illinois University
        1 University Circle
        Macomb, IL 61455
        Phone: (309) 298-2160
        Fax: (309) 298-2270
        Email: KW-McCravy@...

         

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