THE SCIENTIFIC RESEARCH PROGRAM



    untouched Lophophora williamsii

    Untouched Lophophora williamsii in the regrowth study site population



        
      Peyote post-harvest regrowth –
      Control group


      Summary of our observations –
      after eight years


        Concerning data on regrowth involving multiple pups:
            1) There is not necessarily a direct 1:1 correspondence between sequential figures for individual pups within a single plant.
            2) It was not uncommon for some or all pups to be partly or entirely covered so some photos may reflect the pre-uncovery state.

            Images of the tags can be viewed via the links in the column for the tag numbers and images of the actual plants can be viewed using the links in the column headed "Number of crowns".

            A number of our tags and plants were completely buried and hence provided missing data in 2009. In the years since then, thanks to the use of a high powered metal detector we have  located all of our tags, stakes and plants except in the instances that are noted in the table below.

            Images and data concerning the control group can be found below.


       nd   – No data.
           —   – Missing data

      Control group — 2016 cumulative data summary

       
      Plant
       Number 

      tagIMG
       Number of crowns 
        (links to images)
       Number of ribs 
       
       Diameter of crowns 
      (in cm)
       Comments 
       
      2008 
      2009
      2010

      2011
      2012
      2014
      2016
      22 Nov. 2008
       7 Mar. 2009
       6 Mar. 2010

      15 Mar. 2011
      13 Mar. 2012
      10 Mar. 2014
      14-15 Mar. 2016
       22 Nov. 2008
        missed 2009 data
        6 Mar. 2010

      15 Mar. 2011
      13 Mar. 2012
      10 Mar. 2014
      14-15 Mar. 2016
      22 Nov. 2008
       7 Mar. 2009
       6 Mar. 2010
      15 Mar. 2011
      13 Mar. 2012
      10 Mar. 2014
      14-15 Mar. 2016







       
      151 
      151
      151
      151
      151
      151
      151

      2
      2
      2
      4
      3
      3
      3

      8, 8
      —
      8, 8
      9*, 8, 7, 9
      7, 5, 6
      5, 5, 5
      7, 5, 5

      3.8, 4.3
      3.5, 4.7
      3.0, 2.7
      4.1*, 1.8, 2.0, 2.2
      2.7, 2.1, 2.3
      3.4, 3.6, 2.7
      4.2, 3.7, 3.2


       Both crowns broken off by hogs. Replanted 2010. See details below concerning control plant 151.



      152 
      152
      152
      152
      152
      152
      152

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      3.7
      3.8
      3.4
      4.2
      4.8
      5.1
      5.4



        2011 post-uncovery photo missed.





      153 
      153
      153
      153
      153
      153
      153

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      3.5
      3.8
      3.9
      4.2
      4.8
      4.4
      4.9




       
      154 
      154
      154
      154
      154
      154
      154

      4 (+4 pups)
      4 (+4 pups)
      9
      9
      8
      8
      8

      13, 13, 13, 8
      —
      13x3, 7x1, 8x4
      13x3, 6, 8x3, 9, 8
      13x3, 8x2, 7, 8, 7
      13x3, 8x4, 7
      13x3, 8x5

      3.4, 5.0, 6.1, 5.0,
      3.2, 5.8, 6.3, 5.6
       6.1, 5.1, 5.5, 3.1, 2.0, 2.2, 1.9, 1.7
      6.5, 6.0, 5.5, 1.1, 2.5, 3.6, 2.0, 2.3, 2.6
      5.5, 5.5, 5.5, 3.5, 2.3, 2.7, 2.8, 3.0
      6.4, 5.8, 6.2, 4.6, 3.6, 3.5, 3.4, 3.2
      5.2, 5.6, 4.3, 3.7, 4.0, 4.5, 3.3, 3.6



       9th crown was not measureable
       




      155 
      155
      155
      155
      155
      155
      155

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      12
      13

      4.3
      4.8
      4.5
      4.5
      5.3
      5.7
      5.8




      156 
      156
      156
      156
      156
      156
      156

      2
      2
      2
      2
      2
      2
      2

      8, 8
      —
      8, 8
      8, 8
      8, 8
      8, 9
      8, 9

      4.3, 4.9
      4.8, 4.7
      4.4, 4.8
      4.8, 4.8
      5.3, 5.0
      5.6, 5.9
      5.8, 5.8




      157 
      157
      157
      157
      157
      157
      157

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      4.8
      5.5
      4.6
      5.2
      5.5
      6.1
      error







       

      158 
      158
      158
      158
      158
      158
      158

      1
      1
      1
      1
      1
      1
      1

      8
      —
      11
      13
      11
      12
      13

      5.7
      5.8
      4.9
      5.8
      5.7
      5.9
      5.8


      159 
      159
      159
      159
      159
      159
      159

      1
      1
      1
      1
      1
      1
      1

      8
      —
      12
      13
      10
      9
      8

      4.7
      5.0
      4.3
      4.8
      4.8
      4.6
      4.8




      160 
      160
      160
      160
      160
      160
      160

      1
      1
      1
      3
      2
      2
      2

      13
      —
      12
      13, 6, 7
      13, 6
      11, 6
      13, 5

      4.7
      5.2
      4.9
      5.3, 0.7, 0.8
      4.8, 1.8
      4.8, 2.3
      5.2, 2.6


      161 
      161
      161
      161
      161
      161
      161

      1
      1
      1
      1
      1
      1
      1

      8
      —
      9
      9 (transition)
      8
      11
      13

      5.1
      5.2
      4.7
      5.5
      5.0
      6.2
      6.0




      Not photographed in 2011
      Not photographed in 2012



      162 
      162
      162
      162
      162
      162
      162

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      13

      4.0
      5.2
      4.4
      5.6
      5.8
      6.3
      6.6


      163 
      163
      163
      163
      163
      163
      163

      1
      1
      1
      1
      1
      1
      1

      13
      —
      13
      13
      10
      8
      10

      6.1
      6.5
      6.4
      7.0
      5.8
      6.0
      6.3


      164 
      164
      164
      164
      164
      164
      164

      1
      1
      7
      6
      6
      8
      8

      13
      —
      13, 7, 6, 7, 5
      13, 8, 8, 8, 8, 8
      13, 10, 9, 6, 8, 10
      13, 8, 7x3, 6x3
      13, 8x3, 6x4

      7.4
      7.4
      6.8, 2.2, 1.8, 1.6, 1.0
      7.0, 1.8, 2.5, 2.5, 2.9, 2.5
      6.0, 2.5, 2.7, 3.0, 2.8, 0.8
      6.4, 2.5, 2.5, 2.8, 3.2, 3.5, 2.7, 2.7
      5.5, 4.0, 3.7, 3.2, 3.0, 2.5, 2.8, 1.0


         2 new pups not measurable. 




      165 
      165
      165
      165
      165
      165
      165

      3
      3
      3
      4
      2
      2
      2

      8, 8, 8
      —
      13, 7, 8
      13, 8, 8, 7
      13, 7
      13, 8
      13, damaged

      5.8, 3.5, 3.2
      5.6, 3.9, 3.8
      4.7, 3.1, 3.1
      5.7, 1.8, 3.9, 3.5
      5.3, 2.1
      4.2, 1.8
      nd

       




        Dying plant, black disease.
      166 
      166
      166
      166
      166
      166
      166

      1
      1
      3
      3
      3
      3
      nd

      13
      —
      13, 7, 7
      13, 8, 8
      13, 7, 7
      13, 7, 8
      nd

      6.0
      5.6
      5.2, 1.7, 1.7
      6.1, 2.5, 2.6
      6.0, 2.8, 3.0
      6.5, 3.3, 3.4
      nd






       Nail & tag separated and moved.
       Tag on ground, no plant found.

      167 
      167
      167
      167
      167
      167
      167

      2
      2
      2
      2
      2
      2
      2

      13, 10
      —
      13, 11
      13, 10
      13, 10
      11, 10
      13, 10

      4.2, 5.3
      5.3, 5.9
      4.8, 5.5
      5.2, 6.1
      5.1, 6.2
      5.8, 6.0
      6.2, 6.0


      168 
      168
      168
      168
      168
      168
      168


      2
      2
      1 (0)
      0
      0
      0
      0


      10, 11
      —
      9 (nd)
      nd
      nd
      nd
      nd


      5.2, 5.1
      5.3, 4.7
      3.9 (March) [dead (July)]
      nd
      nd
      nd
      nd




       Diseased in March; dead in July.
       
       No trace in 2012.

       Did not locate in 2016.
       
      169
      169
      169
      169
      169
      169
      169

      1
      1
      1
      1
      1
      1
      1

      8
      —
      12
      13
      13
      12
      13

      3.2
      4.7
      3.9
      4.0
      4.5
      5.5
      5.8


      170 
      170
      170
      170
      170
      170
      170

      1
      1
      1
      1
      1
      1
      1

      10
      —
      13
      13
      13
      13
      13

      5.2
      5.6
      5.6
      5.0
      5.2
      5.9
      6.0


      171 
      171
      171
      171
      171
      171
      171

      1
      1
      1
      1
      1
      1
      1

      13
      —
      13
      13
      13
      13
      13

      7.5
      7.0
      6.1
      7.0
      7.0
      7.1
      6.3


      172 
      172
      172
      172
      172
      172
      172

      1
      1
      1
      1
      1
      1
      1

      13
      —
      12
      13
      13
      13
      13

      5.0
      5.5
      5.0
      5.4
      5.0
      5.0
      4.7



       Hogs moved tag; plant was OK.
       



      173 
      173
      173
      173
      173
      173
      173

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      10
      13

      4.8
      4.9
      4.6
      5.3
      5.5
      6.1
      4.5







       Plant was 5.0 cm tall!

      174 
      174
      174
      174
      174
      174
      174

      1
      1
      1
      1
      1
      1
      1

      10
      —
      12
      13
      13
      13
      13

      5.2
      5.9
      5.2
      6.5
      6.0
      6.9
      6.3


      175 
      175
      175
      175
      175
      175
      175

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      3.6
      4.1
      3.1
      4.0
      3.5
      4.4
      4.4


      176 
      176
      176
      176
      176
      176
      176

      1
      1
      1
      1
      1
      1
      1

      8+ (transition)
      —
      13
      13
      13
      11
      13

      5.0
      5.0
      4.7
      5.5
      5.0
      5.5
      5.6


      177 
      177
      177
      177
      177
      177
      177

      1
      1
      0
      0
      0
      0
      0

      8
      —
      nd
      nd
      nd
      nd
      nd

      6.0
      5.2
      nd
      nd
      nd
      nd
      nd



       Dead. Compare July 2010 #168. 




       
      178 
      178
      178
      178
      178
      178
      178

      1
      1
      1
      1
      1
      1
      1

      13
      —
      13
      13
      13
      13
      13

      5.8
      5.9
      5.8
      6.2
      6.7
      6.9
      6.6


      179 
      179
      179
      179
      179
      179
      179

      1
      1
      1
      1
      2
      2
      2

      8
      —
      8
      8
      uncountable, 5
      6, 8
      8, 8

      4.5
      4.2
      3.3
      4.3
      1.5, 4.0
      3.3, 4.1
      2.5, 3.3


      180 
      180
      180
      180
      180

      180
      180

      1
      1
      1
      1
      1

      3
      3

      13
      —
      12
      13*
      13

      7, 7, 6
      8, 8, 8

      7.2
      7.3
      6.3
      7.4
      7.5

      5.1, 3.9, 3.8
      5.4, 4.7, 4.4




       12 ribs with another intercalating from base. Plant blooming!


      181 
      181
      181
      181
      181
      181
      181

      1
      1
      1
      1
      1
      1
      1

      5
      —
      5
      5
      7
      8
      8

      2.5
      2.9
      2.8
      3.2
      3.2
      3.6
      4.5


      182 
      182
      182
      182
      182

      182
      182

      1
      1
      1
      1
      0

      0
      0

      8 (barely)
      —
      7
      nd*
      nd

      nd
      nd

      2.8
      4.0
      3.2
      4.1
      nd

      nd
      nd




       Ribs not countable. Plant stepped on (by ungulate?).



      183 
      183
      183
      183
      183
      183
      183

      1
      1
      nd
      0
      0
      0
      0

      8
      —
      nd
      nd
      nd
      nd
      nd

      3.8
      4.2
      nd
      nd
      nd
      nd
      nd


       Hogs
       Presumed dead; carcass not found.



      184 
      184
      184
      184
      184
      184
      184

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      4.0
      4.7
      3.7
      4.2
      4.6
      4.5
      4.2






        Photograph missed in 2016.
      185 
      185
      185
      185
      185
      185
      185

      1
      1
      1
      1
      1
      1
      1

      5
      —
      6
      9
      8
      8
      8

      2.7
      3.0
      2.5
      3.6
      3.7
      4.2
      4.4


      186 
      186
      186
      186
      186
      186
      186

      3
      2
      3
      3
      3
      1
      ?

      8, 8, 8
      —
      6, 7, 9
      10, 5, 7
      10, 5, 8
      7
      ?

      3.6, 2.4, 3.0
      3.8, 2.1, nd
      1.0, 1.9, 3.9
      4.8, 1.6, 2.4
      5.1, 2.0, 2.8
      3.5
      ?






       Plant injured & dug up (replanted).
       Plant was not located; tag dug up.

      187 
      187
      187
      187
      187
      187
      187

      2
      2
      2
      2
      2
      2
      2

      8, 8
      —
      11, 9
      8, 10
      8, 8
      13, 13
      13, 13

      4.3, 5.0
      4.5, 5.0
      4.7, 4.6
      5.2, 5.8
      5.2, 5.7
      5.3, 5.7
      5.2, 5.4


      188 
      188
      188
      188
      188
      188
      188

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      11
      11

      4.4
      4.7
      4.4
      5.0
      5.3
      5.7
      5.6


      189 
      189
      189
      189
      189
      189
      189

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      3.6
      4.0
      3.0
      4.6
      4.0
      4.5
      4.4


      190 
      190
      190
      190
      190
      190
      190

      2
      2
      2
      2
      2
      2
      2

      13, 13
      —
      13, 13
      13, 13
      13, 13
      13, 13
      13, 13

      6.4, 6.0
      5.8, 5.5
      6.0, 5.0
      6.8. 6.1
      6.5, 6.0
      7.7, 6.9
      6.6, 6.2


      191 
      191
      191
      191
      191
      191
      191

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      3.8
      3.3
      3.0
      4.3
      4.5
      5.4
      4.4


      192 
      192
      192
      192
      192
      192
      192

      1
      1
      1
      1
      1
      1
      1

      5
      —
      5
      5
      5
      8
      8

      2.6
      2.8
      2.1
      3.3
      3.5
      4.6
      4.2


      193 
      193
      193
      193
      193
      193
      193

      3
      3
      3
      3
      3
      3
      3

      10, 10, 10
      —
      10, 9, 10
      10, 10, 10
      10, 10, 10
      10, 10, 10
      10, 10, 10

      4.5, 4.5, 5.0
      4.0, 4.4, 4.7
      3.5, 3.7, 4.2
      5.0, 4.5, 4.5
      5.0, 4.8, 4.7
      5.5, 5.5, 5.4
      5.0, 5.0, 4.8


      194 
      194
      194
      194
      194
      194
      194

      2
      2
      2
      2
      2
      0
      0

      8, 8
      —
      8, 8
      8, 8
      8, 8
      nd
      nd

      4.1, 3.2
      3.9, 3.3
      2.2, 3.2
      4.2, 3.6
      3.4, 2.9
      nd
      nd


      195 
      195
      195
      195
      195
      195
      195

      3
      4
      4
      4
      4
      4
      4

      8, 8, 13
      —
      12, 8, 8, 5
      13, 5, 8, 8
      10, 5, 8, 8
      8, 8, 8, 6
      10, 8, 8, 7

      4.4, 4.0, 3.0
      4.1, 1.8, 3.7, 2.9
      3.8, 2.1, 3.3, 1.3
      5.0, 1.7, 4.0, 3.0
      4.2, 1.5, 3.4, 2.9
      4.5, 3.8, 5.6, 2.5
      5.4, 3.8, 3.8, 2.4


      196 
      196
      196
      196
      196
      196
      196

      1
      1
      1
      1
      1
      1
      1

      8
      —
      8
      8
      8
      8
      8

      3.0
      3.0
      2.5
      3.6
      3.4
      4.3
      4.3


      197 
      197
      197
      197
      197
      197
      197

      1
      2
      3
      3
      1
      1
      1

      10
      —
      9, 5, 5
      11, 5, 5
      11
      11
      13? (uncountable)

      4.9
      4.5, 1.2
      3.8, 2.0, 1.0
      4.7, 2.0, 1.1
      4.7
      5.5
      4.8


       Tag not photographed in 2009. 

       


       Plant was nearly half eaten.

      198 
      198
      198
      198
      198
      198
      198

      1
      1
      nd
      0
      0
      0
      0

      8
      —
      nd
      nd
      nd
      nd
      nd

      4.2
      4.1
      nd
      nd
      nd
      nd
      nd



        Hogs dug up.
        Dug up by hogs again.
        Hogs dug up, hung tag in Acacia.
        We consider this plant to be dead.


      199 
      199
      199
      199
      199
      199
      199

      1
      1
      1
      1
      1
      1
      1

      10
      —
      9
      8
      9
      8
      13

      4.8
      4.6
      4.5
      5.0
      5.5
      5.5
      5.8


      200 
      200
      200
      200
      200
      200
      200

      1
      1
      1
      1
      1
      1
      1

      11 (transition)
      —
      12
      10
      10
      11
      13

      5.4
      5.5
      5.4
      5.8
      6.0
      6.5
      6.4




        The 2014 data summary for the control group

        The 2012 data summary for the control group

          The 2011 data summary for the control group

          The 2010 data summary for the control group

       

      The 2016 data summary for the regrowth group

        The 2014 data summary for the regrowth group

         The 2012 data summary for the regrowth group

          The 2011 data summary for the regrowth group

         The 2010 data summary for the regrowth group

       


          The 2012 data summary for the reharvest of the regrowth group at two year intervals


          An additional 20 plants (#201-220) were harvested during the November 2008 monitoring
      to make up for what was then believed to be lost plants from the original group of 50 harvested plants.
         [The results concerning those twenty individuals. ]
      Due to problems with rain and time/help, we made no attempt to locate those plants in 2014 and 2016 (respectively).


      Comments concerning control plant #151:

      In March 2010 we discovered that plant number 151 had been decapitated by passing porcine traffic. Its two broken heads were replanted by us near their tag. In a late summer visit that same year we found that one of the heads had again been kicked out of the ground and was badly shriveled. It was once again replanted.
          In March of 2011 we found the head that had taken root in 2010 was quite healthy and growing whereas the shrivelled one was nowhere to be found. More interestingly the original plant #151 was located by virtue of it sending up new pups.
          On 13 March 2012, neither broken crown we had replanted could be located. The original plant was still present showing new growth.

      On 10 March 2014, the broken crowns we had replanted could still not be located. The original plant was showing new growth.



      2014 comments:

      The study we had originally intended was completed in 2012, so our visit frequencies were reduced to every two years following that point.

      It is our intention to track the recovery process as long as possible, in order to evaluate the mortality associated with two-year harvest cycles and also to learn at what age the total regrowth will be the equivalent of what was originally harvested. Specifically to establish how long is required between harvests in order for peyote harvesting to be sustainable based on the available biomass. Right now we only know that period it is greater than four years but shortly we will have the numbers crunched for 2014. There is also the secondary question of how many years it takes for the mescaline content of the harvested plants to recover to their preharvest levels. That too we only currently know is a period greater than four years and establishing the actual time required lies someplace in the future.

      A new twist was added in 2014 in the form of unmistakable evidence, in the form of hoofprints and cow-pies, that cattle had been walking through the study site, primarily in the upper numbers of the control group.

      2016 comments:

      We were amazed at how challenging of a time period that 2015-2016 had been for the population.




      peyote in habitat

      An untouched specimen at the study site 15 March 2016


         

          If you would like to help support additional studies of this type, designed to answer basic questions that are critical to the optimal stewardship/management of vulnerable cactus species, please send a contribution, of $25 USD or whatever amount you can afford, to the Cactus Conservation Institute, 909 E. Sul Ross Ave., Alpine, TX 79830.
          We also now accept donations via PayPal.







    Please enjoy our featured articles:


    A Tale of Two Cacti


    by Dana M. Price & Martin Terry



    Button, button, who's got the button?


    by Martin Terry


    Conservation of Lophophora in Mexico


    by Martin Terry

    Flora of the Dead Horse Mountains

    by Joselyn Fenstermacher






    All images © are copyrighted by the photographers and/or the CCI and are used with permission.
    Reproduction is forbidden without prior written consent.




    Cactus Conservation Institute