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We have several microscopes and we would like to capture digital images of what we see–especially pollen grains. Which on should we pick? Any advice would be appreciated. Here are some links to pages about several models of inexpensive USB cameras that can mount to a microscope:
microsope.com sells several brand. They sell only one line from bigC.
Here’s a company that sells the EM series from bigC.
documentation pages on the bigC product line (more on the AM series than the EM series).
Another source of info on the Moticam line.
I scanned this list of companies that sell (and used to sell) microscope accessories to find the above links.
FYI I stumbled across some pollen identification keys: a taxonomic list, a key to pollen of the bahamas, and an inaccessible “pollen database” that sounds good.
I should introduce myself to the new Team – I’m Ruth Shaw. I’ve collaborated with Stuart and the Team on this project since 2000. I’m a professor at the University of Minnesota in the Department of Ecology, Evolution and Behavior. Broadly speaking, my research addresses questions about ongoing evolution in plant populations, and I have found this project on the evolutionary consequences of fragmentation of populations of Echinacea endlessly stimulating!
I’m just back from the joint meeting of the Society for the Study of Evolution, The American Society of Naturalists, and the Society of Systematic Biology, where I gave a brief talk about some of our results based on 7-years of data on “Inb1” an experiment to compare the effects of inbreeding and of crossing between remnants. This experiment has been growing in the common garden since 2000, and we have now documented that the degree of inbreeding depression is exceptional, far exceeding that found in other studies. Intriguingly, we have also found that both inbreds and progeny of between remnant crosses harbor more of the specialist aphid than plants derived by random mating within remnants.
A special highlight of the meeting is that our paper about estimating fitness, with examples (available via the main echinacea website), received the President’s Award, chosen by the current President of ASN as outstanding paper of 2008 in the journal, The American Naturalist. Quite an honor!
I was out in Douglas County in late May for the early monitoring of seedling recruitment in the remnants, and I’m glad to hear that process is moving forward well! I’m looking forward to getting back out there and working with you all soon!
Hey team Echinacea,
Lani and Denise officially finished their REU internships last Friday and are both back in the California bay area. They both worked really hard on their projects and ended up with some really neat studies. At the end of their internship they created and presented a poster for a research symposium. Their posters turned out really well and I wanted to share them with you. Below are links to each of their posters…enjoy!
Lani’s poster: Download file
Denise’s poster: Download file
Team Echinacea:
A grad student, Emme Bruns, from UMN is studying crown rust. She has been noticing heavy infections of rust on some of the Bromus and Elytrigia (Agropyron) grasses around the twin cities and was wondering if similar infections are occurring up here.
Have you seen anything that looks like a rust pathogen on either of these species?
If the pathogen is present, she would like to visit to survey disease incidence and collect isolates.
Let me know if you see anything like this–and make a mental note or note in your visor where you see it.
Thanks!
Here’s a map (pdf format) of plants in the common garden. A purple asterisk indicates a plant that flowered this year. The size of the asterisk is proportional to the number of heads produced. Download file
We harvested a lot of heads today & yesterday. It’s early for us to be harvesting.
Download file
This is a link to a sample survey sheet that is used for my research. It includes a list of some of the most common plants found in the prairie fragments.
-Rachel
i started this flog entry last year and never finished it. I’m just going to publish it as it is…
To streamline the process and get everyone on the same page i’m compiling photographs of all the different categories that we are noting in association with Echinacea plants.
Status
Can’t Find
Flowering
Basal
Staple
Dead Lvs (this year’s)
Blue Stake Only
Insects
aphids
ants
ant nest
egg sac
wht fuzzy
spittle
thorn hopper
beetle
grasshopper
leaf miner
????????????
pupa
rolled lf
Disease
yellow lf
purple lf
deformed lf
dead lf
Insect Damage
Nibbles
Holes
Wrinkles
1 lf minor
1 lf half-gone
1 lf gone
Other Damage
crisp lf
1 lf minor
1 lf half-gone
1 lf gone
1 mowed lf
1 burned tip
CGhead-info-07sub
Head Status
dud
no fls
broken off
crisp
bent
tilted
vertical developmnt, no hd
indented
normal
Insects on hd
aphids
ants
ant nest
white gunk
cat frass
egg sac
wht fuzzy
long-legged bug
larva
beetle
pupa
thorn hopper
spittle
grasshopper
Insect Damage
Nibbles
Disease (head)
no rays
whole hd weird
weird tufts
Here’s a rundown of our equipment and various settings that we’re using.
Kites:
Sutton Flowform 16
G-kites Dopero
Peter Lynn Pilot 50
Other kite bits:
Horizontal Brooxes AutoKAP Kit
A plastic winding halo
200 and 250 lb test string
Cameras and accessories:
Canon S70
Canon EOS 400D / Digital Rebel XTi
Canon 50mm f/1.8 prime lens, aka the Nifty Fifty
GentLED infrared LEDs for setting off the camera by remote
Tower Hobbies RC FM transmitter and receiver
Software:
the GIMP (Free image manipulation)
UFRAW (includes a GIMP plugin for reading RAW images)
General camera settings:
Manual focus, set to infinity
Tv mode (shutter priority) set to 1/800 or 1/1000
RAW mode (RAW+640×480 on the S70, RAW on the XTi)
ISO 100 (200 or 400 if it’s not sunny, though noise can sneak in at ISO higher than 400)
Bracketed down 1/3 stop
Zoomed out as much as possible (50mm on the XTi [doesn’t zoom anyway, as it’s a prime lens), ~28mm on the S70)
Remote-driven mode
Other bits:
Wooden ground markers (details soon, including images)
Paint
Here are some key resources:
Kensington general forecast and 48-hour surface wind forecast (from NWS in Minneapolis).
Hoffman general forecast and 48-hour surface wind forecast (from NWS in Grand Forks).
Current conditions at nearby weather stations.
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