17th AUSTIN JULY CENSUS of butterflies

Chris J. Durden drdn at mail.utexas.edu
Fri Jul 9 01:09:34 EDT 1999


<TX-BUTTERFLY at LIST.AUDUBON.ORG>
>Sender:       Audubon Texas butterfly discussion
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>From:         "Chris J. Durden" <drdn at MAIL.UTEXAS.EDU>
>Subject:      17th AUSTIN JULY CENSUS of butterflies
>Comments: cc: leps-l at lists.yale.edu
>To:           TX-BUTTERFLY at LIST.AUDUBON.ORG
>
>        AUSTIN (TEXAS) JULY BUTTERFLY CENSUS
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  If you know your skippers please join us for the seventeenth annual July
>butterfly census on Saturday 10th July, 1999. The census is conducted by
>the AUSTIN AURELIANS. All participants in past census counts are honorary
>Austin Aurelians. This is a collectors' census, voucher specimens will be
>taken. Records are maintained by the BALCONIAN NATURALISTS' GROUP. Early
>counts were published in the reports of the Xerces Society. This census
>comes at a climatically sensitive time of year and is a general indicator
>of the health of our fauna. Time of the census is selected as a day from
>190 to 199. This is usually July 10th or the first Saturday following.
>Census results from 1982 cover the period of diversity before the imported
>fire ant invasion, the crash of 1986 following the fire ant invasion, and
>the gradual incomplete recovery since. Data also documents the gradual
>increase in occurrence of tropical elements of our fauna, correlated with
>the slight increase in global temperatures over the period of the census.
>  The sampling circle is centered on Mount Bonnel and includes resampling
>of sites in the Balconian Canyonlands Biotic District, Black Wax Prairie
>and Colorado River Floodplain. Classic sites on Barton Creek and Bull Creek
>will be resampled.
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  Meet at the Mount Bonnel Park Entrance with your net, sunscreen, hat, and
>refreshments, in time to start the count at 10 AM. The count will proceed
>until dark or exhaustion, whichever comes first. There will be cool
>refreshment stops between sample sites.
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  If you have questions, contact me by email.
>.........Chris Durden
>
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