Indigenous Biological Conservation of Medicinal Plant Resources at the Itzamma Garden: Status & challenges By: Patrick Audet Introduction; The Itzamma Medicinal Plant Project is a collaborative conservation and agronomy initiative between the University of Ottawa, Cleveland State University, the Belize Indigenous Training Institute, and the Q’eqchi Traditional Maya Healers’ Association focused on identifying, characterizing, and cultivating medicinal and/or traditionally important plants used by the Q’eqchi Maya. Located near the village of Indian Creek adjacent to the Mayan Mountain foothills of southern Belize, the Itzamma Ethnobotanical Garden represents a cornerstone of this project where endemic plant species are grown, cultivated, and used in regular practice for community primary health care by 9 healers of the Q’eqchi’ Maya Healers’ Association (Bourbonnais-Spear et al. 2006). From a recent field expedition, we present here a biological survey of the Itzamma Garden describing the diversity, distribution, and abundance of medicinal species, as well as a description of development challenges and improvement strategies currently employed at the site. Method The biological survey was conducted via a coordinated grid-line mapping method. Strategic reference markers were dispatched throughout the site to triangulate the Garden’s periphery and ecological features. GPS points were also noted for each marker. All lengths and relative width distances between cultivated rows were measured directly. The plant species lists were tabulated by cross-referencing folk names and voucher specimens from previous data-bases by Bourbonnais-Spears et al. (2005) and Treyvaud-Amiguet et al. (2005, 2006). Information on the history, challenges and solutions to the cultivation issues were provided by the Healers and Canadian plant scientists. Biological survey Characterized as a mixed submontane and lowland broadleaved forest, the Itzamma Garden is a 70 acre site comprising over 130 cultivated medicinal plant species grown locally or transplanted from nearby regions (Table 1). In the wake of Hurricane Iris, the cultivated zones within the Garden are described as a mid- to late-succession forest ( mainly 8 year old) canopy and managed grasslands surrounded by a seasonal floodplain due to the bordering Golden stream (Fig.1a). As member species originate primarily from upland localities, the majority of medicinal plants at the Garden are cultivated in the forest canopy zone which provides much needed shade and soil moisture (Fig.1b), whereas better adapted commercial cultivars such as chamomile and lemongrass are more prominent in the managed grassland which is exposed to high levels of sunlight and seasonal water drainage (Fig.1c). In this latter zone, medicinal plants have been successfully grown through intercropping with ornamental plants by providing added protection from desiccation; albeit, their growth and medicinal potency was found to be greatly reduced compared to those found in the canopy zone. For this reason, fruit trees are being planted at the periphery of the grassland to improve shade cover and promote the growth of early succession species. Moreover, an innovative feature at the Garden is the use of fallen trees for the cultivation of epiphytic plants. As shown (Fig.1d), moisture and nutrient rich logs harbor a high abundance and diversity of rare and often precarious species numbering well over 100 individuals, including many low bushes and runner vines. Challenges and Solutions at the Itzamma garden The Izamma Garden (created between 2000 and 2009) was an initiative of the traditional healers, themselves, who cited concern for disappearing wild species and the long travel required to collect medicinal plants in the Maya mountains. This is a strategy previously never attempted in the area and subsequently involved numerous challenges (Table 3). First, no templates or protocols were available. Plants were collected with soil and roots in the Maya mountains during field trips by the healers. A high rate of mortality among transplanted species exists due to root disturbances, leaf desiccation and predation by leaf cutter ants. To meet these challenges, the healers are using irrigation with water from the adjacent creek to prevent desiccation. Also, transplantation measures are being adapted making better use of shade trees. Since log resources are rapidly depleted in tropical ecosystems, careful considerations are being made for the construction of raised bed microcosms containing enriched soils for a more sustainable cultivation of epiphytic plants. For ant protection, the healers are using traditional ceremonies and intercropping methods. Peer reviewed literature has shown that the latter is effective in reducing a number of insect pests. Other challenges of the project include an inability to attract a full time agronomist due to short term funding which was resolved by inviting volunteer Canadian plant scientists and increasing healer participation at the Garden. An unresolved concern is the issue of clear rights to land tenure. Here, ongoing measures are being taken to acquire full title rights from the Government of Belize. References N. Bourbonnais-Spear, J.T. Arnason & al., Econ Botany 59, 326-336 (2005). N. Bourbonnais-Spear, J.T. Arnason & al., Ambio 35, 138-140 (2006). V. Treyvaud Amiguet, J.T. Arnason & al., Econ Botany 59, 29-42 (2005). V. Treyvaud Amiguet, J.T. Arnason & al., Econ Botany 60, 24-38 (2006). Figure 1. Ecological survey of the Itzamma Ethnobotanical Garden at Indian Creek, Belize, C.A. The site’s succession history (a) is shown outlining the cultivated (solid line) and uncultivated zones (dotted line), as well as the distribution of plant species (e.g. row cultivars and field plots) within the forest canopy (b) and managed grassland zones (c); the waking trails are represented as dotted lines. A précis of epiphytic plants associated with Log 1 (d) is shown where the species distributions and relative sizes are represented as solid circles and runner vines and bushes represented as dotted free-forms. The corresponding identification numbers for species taxons and Q’eqchi folk names are presented in Tables 1 and 2. Table 2. Log Epiphytes Family Taxon Folk Name I.D. Acanthaceae Aphelandra scabra (Vahl.) Sm. Justicia aff.fimbriata (Nees) V.A.W. Graham Justicia albobracteata Leonard Adiantum pulverulentum L. Pteris pungens Willd. Annona aff. glabra L. Chamadorea sp. Anthurium willdenowii Kunth. Anthurium sp. Philodendron sp. Syngonium sp. TBD Xilix Jolom chakmut Xna' k'ejen Sisb' k'itche' Rok' chitwan Jolob'ob' Xate' X ch'ich ma'us Xtye' aj pu' U'xb Ruk' ma'us Letzeb / Sankil pim / Sankil kejen German Camomile Ra'an k'antyaj Jackass Bitter Joblo' te' Bak'nel pim Juruch aj pak' Rax i juruch' aj pak' Pa' ulul Xak' pek K'ajal Chik babak' K'um pim K’uk mukoch Rax i ch'ajom k'ajam Kak' i uk'ub K'an che' / K’an i che’ Karabans' che' Kak' i pim / Cua' bon Jub'ub Jix 63 63 72 50 9 23 48 25 3 61 13 31, 44 K'otz / Ch'up i xim Subin Chich' i mo'or Sankil kejen X cua chak'bo' lai Xak' pek Jolom k'an tyaj Cui i xul Cui ajawchan Mai pim Pu'chuch re'tzul Tziri tok' 75 Adiantaceae Annonaceae Arecaceae Araceae Asteraceae Begoniaceae Burseraceae Cactaceae Cucurbitaceae Davalliaceae Desconocida Euphorbiaceae FabaceaeCaesalpinioideae Gesneriaceae Marcgraviaceae Melastomataceae Mimosaceae Monimiaceae Moraceae Moraceae Orchidaceae Piperaceae Matricaria recutita L. Mikania guaco Humb. & Bonpl. Neurolaena lobata (L.) Cass. sepi Vernonia stellaris La Llave & Lex. TBD TBD TBD Begonia glabra Aubl. var. Glabra Begonia heracleifolia Schltdl.& Cham. Bursera simaruba (L.) Sarg. Wilmattea minutiflora (Britton & Rose) Britton & Rose. Gurania makoyana (Lem.) Cogn. Nephrolepis biserrata (Sw.) Schott. TBD Acalypha arvensis Poepp. Acosmium panamense (Benth.) Yakovlev Senna hayesiana (Britton & Rose) H.S. Irwin & Barneby Columnea sulfurea Donn. Sm. Souroubea gilgii V.A. Richt. Clidemia capitellata (Bonpl.) D. Don. var dependens (D. Don.) J.F. Macbr. Hyptis verticillata Jacq. Acacia sp. Mollimedia guatemalensis Perkins Epiphyllum phyllanthus (L.) Haw. var strictum (Lem.) Kimnach Dorstenia sp. Dorstenia contrajerva L. TBD Peperomia hispidula (Sw.) A. Dietr. Peperomia sp. Peperomia sp. Piper aequale Vahl Piper amalago L. C3 10 C2 74 65 19 51 33 58* 35 11 8 71, 52 18 69 6, 46 59 76 37 32 40 45 17 58* 41 14 15 30 42 56 Family (cont’d) Taxon (cont’d) Folk Name (cont’d) I.D. Piperaceae Piper auritum Kunth Piper hispidum Sw. Piper peltatum L. Piper sp. Piper sp. Cymbopogon sp. Securidaca diversifolia (L.) S. F. Blake Gouania polygama (Jacq.) Urb. U'bel K'an pom Tyut it Pu' jix Rax pu'chuch Lemon Grass Ch'up k'an tyaj Ik'l / Ch'ajom kajam / X abon' kajam Chaj max Ruxbi kaq 47 1 39 16 43 C1 73 60,62 Chok'l pim Rok' so'sol Ruj i rak'i tza 70 5 55 Bisib k'ajam Chakbo'li pim / Rix chakbo'li Cho condo' Ik'bo' lai pim Jol jol Jolom i posp K'ak' i chok'l Kak' i tzimaj K'an uxb Ku ku meka / Re'ak' La' Lok' ab' Ojoj Rix ik'bo 'lai Rutzaj k'opopo' Sak' i pajl Sak' i tu' lux Sak'I kuruz kix Wukub k'ejen X xabaj tza Xab ajpak' Xna' ichaj pim 21 4 Poaceae Polygalaceae Rhamnaceae Rubiaceae Schizaeaceae Selaginelliaceae Verbenaceae Hamelia patens Jacq. Lygodium heterodoxum Kunze, Lygodium venustum Sw. Selaginella umbrosa Lem. Ex Hieron. Hoffmannia sp. Adiantum wilsonii Hook. TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD *Folk name associated with more than one taxon TBD – Taxon to be determined 70 2 38 12 24 68 66 53 49 34 28 54 20 26 7 57 64 29 67 27 36 22 Table 1. Row Cultivars Family Taxon Folk Name I.D. Acanthaceae Justicia pectoralis Jacq. Justicia sp. Xu kui kok Jolom chakmut Adiantaceae Arecaceae Araliaceae Begoniaceae Costaceae Pteris pungens Willd. Chamadorea sp. Dendropanax arboreus (L.) Decne.& Planch. Begonia glabra Aubl. Costus laevis Ruiz & Pav. Roq chiq'wan Xate Cojl che' Kaki pim Tzu'un Davalliaceae Euphorbiaceae Gesneraceae Haemodoraceae Loganiaceae Nephrolepis biserrata (Sw.) Schott. Acalypha arvensis Poepp. Columnea sulfurea Donn. Sm. Xiphidium caeruleum Aubl. Strychnos panamensis Seem. Malvaceae Melastomataceae Pavonia paniculata Cav. Blakea cuneata Standl. Clidemia capitellata (Bonpl.) D. Don. var dependens (D. Don.) J.F. Macbr. Clidemia crenulata Gleason Miconia sp. Siparuna thecaphora (Poepp. & Endl.) A. DC. Mollimedia guatemalensis Perkins Blakea cuneata Standl. Pimenta guatemalensis (Lundell) Lundell Peperomia tetraphylla (G. Forst.) Hook. & Arm. Peperomia sp. Piper aff. aequale Vahl Piper hispidum Sw. Piper schiedeanum Steud. Uq mockoch Kak uqub Kaki pim Ix qwa ihquch Krus / Kurus qix Jolom pich Xoi pim Ixq pim 58 25,48,72,73, 75,77,84 19 44,49,51,86 62 21* 15, 22, 23,40,61 46 34 21* 20 36,37 Monimiaceae Myrtaceae Piperaceae Rubiaceae Piper tuerckeimii C.DC. ex Donn. Sm. Piper yucatanense C. DC. Piper sp. Gonzalagunia panamensis (Cav.) K.Schum. Psychotria sp. Schizaeaceae Selaginelliaceae Solanaceae Verbenaceae Vitaceae Zinginberacea Lygodium venustum Sw. Selaginella umbrosa Lem. Ex Hieron. Solanum megalophyllum Dunal Solanum sp. Adiantum wilsonii Hook. Hoffmannia sp. Vitis tiliifolia Humb. & Bonpl. ex Roem. & Schult. Zinginger sp. Tzo pim Roq muqui Chu che Saki kejen Oxlaju Txajom Pens' Puchuch retzul Mai pim Puchuch rekanil Kan pom Marcus kejen / Tint it puchuch Cux sawi Tzulub pim Rax puchuch Chu che / Tzul che' Koleras / Koleras k’aan Ruxbi ka'ak Choq'l pim Ix pim Iq kejen Ruj I raq'I tzi' Rak so'sol Tzulub pim Xan xir 43 55 39 28 30 50 33,68,74 42 85 29 57 71,78 14,16 18,56 66,67 35 79 47,83 17,82 41,54 65 27 31 52,70 68b 35 1-13, C4 Family (cont’d) Taxon (cont’d) TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD *Folk name associated with more than one taxon Folk name associated with more than one taxon TBD – Taxon to be determined Folk Name (cont’d) Anx’ akajam Chak bo’lai pim Ix uqil li pek Kaq'I ukub Ki’il pim Mes i ja’ Mul tzi Nink’l puchuch Qu chim Re’etaj tyajel Roq tzilbu’ul Roq tzulul Rutzaj copopo’ Telom pim Wukub’ kejen X cua ribali choq’l Xiq konej I.D. 53 81 17 63 40 80 43 60 32 76 38 24 64b,69 82 64 59 45 Table 3. Checklist of challenges and solutions at the Itzamma Ethnobotanical Garden List of challenges Botanical garden is not a traditional form of agriculture; Successful cultivation methods yet to be established Medicinal plants are mainly upland forest species while garden is in lowlands close to villages Solutions Innovative use of habitats (e.g. logs, wetlands, shade trees, etc.) leading to successful establishment of medicinal plants Use of cover trees and frequent watering to improve survival; Possible relocation of endemic species to upland sites High transplantation mortality Efforts made to minimize desiccation and reduce root disturbances Leaf cutter ant damage Traditional ceremony to reduce ant damage; Intercropping of species Hurricane Iris (2001) destroyed trek-force building, reference collections and seedlings World Bank, IPP, and IDRC aid to rebuild hurricane-proof facilities Limited success of micro-enterprise commercial crops; Insufficient funds available to attract local agronomist Donation of land by the Government of Belize did not result in clear legal title to land Local agronomist replaced with Research Volunteers; Increased Healer participation at Garden Unresolved