It may be worth examining the original [available online]
http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1000385
Distorted Views of Biodiversity: Spatial and Temporal Bias in Species
Occurrence Data
Elizabeth H. Boakes1*, Philip J. K. McGowan2, Richard A. Fuller3,4,
Ding Chang-qing5, Natalie E. Clark1,2, Kim O'Connor1,6, Georgina M.
Mace1
PLoS Biol 8(6): e1000385. doi:10.1371/journal.pbio.1000385
Published: June 1, 2010
On 05/06/2010, at 12:30 PM, Alan Gillanders wrote:
A definite, "Yes, but!" would be my response.
"But there are numerous examples of citizen science projects
recording less charismatic taxa ... "
One example of a change sliding in under the radar may be that of
Purple Swamphens. My farmer neighbour used to say that he had 300 of
them and they ate the same as five cows. At that time I could never
count more than sixty. Last month we were chatting over the fence
and he commented that there were now only about fifty. I could count
less than twenty at the time and have just counted 18 but know I
missed one young one and its parent; so say 20.
Yesterday I was at a friends place near the water on Tinaroo Dam and
she asked where have all the Swamphens gone? There used to be many
between her house and the lake and they would raid her garden every
day. None were to be seen and none had been seen for some months.
Her husband added that he had not seen them along the roads where
they cross creek lines either and I didn't on my return home either.
Regards,
Alan Gillanders
Alan's Wildlife Tours
2 Mather Road
Yungaburra 4884
Australia
Phone 07 4095 3784
Int +61 7 4095 3784
Mob 0408 953 786
http://www.alanswildlifetours.com.au/
Alan's Blog http://alanswildlife.blogspot.com/
--------------------------------------------------
From: "Laurie Knight" <>
Sent: Thursday, June 03, 2010 9:51 PM
To: "Birding Aus" <>
Subject: [Birding-Aus] The twitching naturalist's contribution
toconservation science
see http://news.bbc.co.uk/2/hi/science_and_environment/10206710.stm
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