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Most Sight Record Sheets (SRS)The most important measure of effort and success is the number of locality records or
Sight Record Sheets (SRS). These are effectively points on a map. We obtained 58 811
SRS, so AGR sent in 21% and WIJ 7% of all data received. The top 10 atlassers sent in 52%
of our data.
Most Species Records (Locality Records) A secondary measure of effort and success is the number of records of species that atlassers have sent in. This is influenced by the richness of areas visited, so is not a fair measure of atlasser effort. But it is the most important measure of success in terms of the Protea Atlas Project. We obtained almost a quarter of a million records of species. A magnificent achievement!
Most Species There are 400 protea taxa - or species and subspecies - in southern Africa, including those discovered by atlassers and still awaiting description. A few additional species have escaped, bring the total to 412. Only two atlassers atlassed all of South Africas extant protea species, but NGF lucked out when AGR discovered a new species during the last two weeks of the project.
Highest ratio of species to SRS These are the "species collectors", going for most species with minimum
effort. It includes people sending in primarily "special data" rare
species and unusual occurrences - while busy with other tasks. 1.11 GRV Gail Reeves, Kirstenbosch Lowest ratio of species to SRSThese are the diehards! This is a measure of "staying power" how
prepared were atlassers to continue atlassing, despite a lack of exciting new species? 0.031 NDK Noelline & Doug Kroon, Sasolburg Species per Site Record SheetThe average number of species per SRS is widely acclaimed as a measure of "quality
data." In truth, this is not so. These are the mercenaries who picked at the
eyes of the most exciting sites and areas (but often remote and hard work) and
left all the "boring" 1- and 2-species plots and species-poor areas to lesser
mortals!
Although we have on average 4.15 species per SRS, this is very misleading. The above histogram shows how many SRS we have with different numbers of species. Note that more SRS with only a single species (9943) were sent in than any other number of species. "Null SRS" (1700) had no proteas. More details of these statistics follow: Two and three page Sight Record SheetsThere were 9 lines for species on each Sight Record Sheet. Plots with more than 9 species required two pages and those with more than 18 species required three pages. No valid plots had more than 27 naturally-occurring species (or three pages). Data violating the constraints of homogeneity of habitat have not been accepted. 2862 two-page SRS were submitted. Most species per SRSThe richest plots are listed below. These exclude planted species and "invalid
plots" (see below). 22 HCE 960522 04 "Josephskraal Babylonst" (There were 12 SRS with 19 species.) The following include planted specimens (p) and escapes (e). These are plots that include protea orchards, but are otherwise natural and contain some naturally-occurring proteas. Gardens and unnatural areas are excluded. 36 AGR (30 p/e) Salmonsdam NR entrance The number of SRS sent in grouped according to the number of species on the Sight Record Sheet. Note the large number of SRS with only a few species, and the long tail of a few SRS having more than 10 species. The median is 1, the mean is 4.15 spp/SRS. Most hybrids One of the Protea Atlas Projects major contributions was to document the diversity and abundance of natural hybrids between protea species. We found 250 different crosses amounting to 810 records of hybrids. 103 AGR Atlas Grassroots Research The richest grid squaresThe richest site (or Sight Record Sheet) had 22 species and was atlassed at Josephskraal in the foothills just west of the Babylonstoring Mountains. Data are still being processed so we do not have data at many other scales. At the 12km X 12 km grid scale the richest site is 3319 CDC Villiersdorp with 75 species. The second richest site is 3419 ACA Kleinmond with 70 species. The richest site known when the Protea Atlas Project began in 1991 was 3419 AAD Houwhoek, which currently has 68 species, tying for third place with 3418 BDB Hangklip. First and last species in data baseThe first processed species and hence the top record in our Protea Atlas Data Base is Protea nitida, atlassed in by Richard Cowling in December 1991 at Coutjieskraal in the Baviaanskloof. The last legitimate record received was of Se adscendens atlassed by Molly Wilson in November 1995 at Onrust. The first date for which we have data is 24 August 1991, when Atlas Project Education did its first training course. Some 8 atlassers collected data on the last legitimate day of 31 March 2001. They were (in order of data received): Ivor (WIJ), Tony (AGR), Nigel (NGF), Tom (TLE), Simon (SGA), Pindar (PIN), Outramps (OUT), Johan & Christine (JCV). How well have we done?Top 50 species by Number of Record Localities
Number of record localities listed. Some way points for reference: 38% of the 58 811 Record Localities contain Ld salignum, 15% have Pr nitida, 9% have Ha sericea, 4% have Pr caffra, and 2% have Pr glabra. Top 20 most-atlassed species by number of atlassers who have recorded species
Numbers of atlassers listed. Some way points for reference: We have 478 atlassers, so 60% of them atlassed Ld salignum, 30% Ha sericea, and 25% Pr caffra.
Numbers of record localities listed. X signifies "cross" or hybrid. We recorded some 251 different crosses or hybrids.
Numbers of record localities listed. Records for So palustris may be incorrectly identified So clavigerus. Ld grandiflorum All four of the above unatlassed species are presumed extinct. Histogram of the number of species that have been atlassed in various classes.
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