Read Rachael’s final paper, in which she investigates the extent to which flowering schedules differ between plants with only one head and plants with multiple heads.
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Read Rachael’s final paper, in which she investigates the extent to which flowering schedules differ between plants with only one head and plants with multiple heads. Steph wrote a field guide years ago to help us identify insects that visit Echinacea heads during the summer in Minnesota. It still serves us remarkably well, but hasn’t been posted until now. Here it is!
Several web pages that provide helpful advice about http://tos.org/resources/publications/sci_speaking.html Specific for poster presentations: Steve Ellis recommended some readings for us. Here they are: http://libcloud.s3.amazonaws.com/93/3a/3/4738/GardenersBewareReport_2014.pdf http://www.pnas.org/content/early/2013/10/18/1314923110.full.pdf+html http://www.gmfreecymru.org/pivotal_papers/JEIT-D-12-00001_proofs.pdf http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0103592 http://modernfarmer.com/2013/05/can-a-lawsuit-save-americas-bees/ Also, here are two mainstream media pieces on the topic of honeybees and pesticides: http://video.msnbc.msn.com/nightly-news/47379683#47379683 http://www.mprnews.org/story/2013/05/26/environment/pesticides-suspected-in-minnesota-bee-deaths For many of our experiments we want to harvest Echinacea heads when they are as ripe as possible, but before any achenes have dropped. The standard harvest indicators are as follows:
Once harvest indicators 1 – 4 are positive, or if a head has loose achenes or is in some way deformed and you think achenes may be lost before the next harvest, harvest the hd! Make sure to look for loose achenes at the top of every hd with brown bracts. Harvest a head by cutting it off and placing it carefully into a labeled bag. When cutting the hd off, hold the head firmly in one hand and cut the peduncle with the pruners 3-5 cm under the hd. You don’t need to open the bag all the way and the hd doesn’t need to go all the way to the bottom of the bag. That’s our standard harvest protocol! Everything’s flowering so late this year, we won’t be harvesting for a while, but I wanted to post this while I was thinking about it. Hello everyone! This is Sebastian with another update on the x-ray machine. This post will discuss the various methods that can be used to determine the radiation dose of our x-ray machine. Below you will find my report on determining x-ray radiation doses.
Evaluating 3 methods for estimating radiation doses
Introduction: Objectives: Methods: Results: Comparison between manufacturer data and web calculator: The web calculator: http://www.radprocalculator.com/XRay.aspx The information given by the manufacturer is given in the following documents: MX-20 mR Ouput versus time.pdf The professionals offer the solution of a dosimeter. Conclusion: Since the manufacture data is most reliable it is the clear choice to use. The manufacturer data covers more information, such as time, voltage, as well as unit conversions for other factors. Considering that more information is provided more variations to experiments can be made and the radiation does would still be available after simple unit conversions. The other option presented by professionals would be to use a dosimeter to directly measure the radiation dose. This option would be the easiest way out of the three options, and would cater more to a researcher’s specific setting. If a dosimeter is available to use I would make this device my choice for determining radiation dose. Hi all! It looks like Echinacea purpurea‘s breeding system is similar to Echinacea angustifolia‘s. Styles that receive compatible pollen shrivel up within a few days, whereas styles that don’t persist longer, often for more than a week. In addition, E. purpurea is self-incompatible. (This means that an individual plant can’t pollinate itself, it needs pollen from another plant of the same species.) To complicate things a little: Here are my csv file and my analysis in R: If anyone has any suggestions for improvement or other things I could look at with this data, please let me know! And I posted much of my data analysis on H. helianthoides already, but here are the “final” versions. (But, again, I’m open to suggestions for further improvement!) H. helianthoides appears to be self-incompatible. Here’s the data I collected: As I mentioned before, I was unable to collect much quantitative data about C. palmata style persistence. But I did notice some things that might be helpful to anyone interested in studying this species further. The following document gives a brief summary: Here’s the final dataset for my compatibility experiment. The experiment is officially ended today (I collected the last bit of data). The dataset contains GPS data (column name distBetween). I missed one plant while GPS-ing, so I used the hand-measured data (for flag #6 at Nessman’s). I also corrected several errors in the datasheet. Data for Analysis — cswitzer — 31 July 2011.csv We spent some time GPS-ing the plants, so we could get the exact distances between them. Here is a csv file with the gps data.
I have been working on analyzing all my data. I looked at plots of each of my individual sties, as well as all the data combined. The data are almost exactly opposite of what I expected.
Here’s a picture of Josh, Amber Z, and I out in the field (having a lot of fun). |
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