traditional knowledge in restoration ecology: a study of ......spectrum of approaches in the...
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Traditional knowledge in Restoration Ecology: a study of case about native trees of dry forest in Chiapas, Mexico
Ecosystem Restoration: Global Initiatives in Science and Practice webinar series
May-17thBy Mercedes Gordillo
Ministry of Environment and Natural History
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Traditional knowledge (TK)? The potential contribution of TK was
recognized in 1970s
Brundtland Commission, The Convention
on Biological Diversity, The Forests
Principles and Agenda 21
Berkes et al. (1995) was proposed a definition for TK:
“as a cumulative body of knowledge, practice, and belief, evolving byadaptive processes and handed down through generations by culturaltransmission, about the relationship of living beings (including humans) withone another and with their environment”
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TK… a complex system Other names: Traditional Ecological Knowledge or Indigenous knowledge
(Berkes, 2102)
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How can TK contribute to restoration ecology?
Partnership
Information about ecosystem references
Offers practices for improve the current models
Site and species selection for restoration plantation
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Spectrum of approaches in the selection of trees
• Multi-purpose or cultural value: quality, intensity, preference, exclusivity
and language (Turner et al. 1990; Garibaldi and Turner, 2004).
• Cultural and ecological value: number of uses and perception of
abundance (Meli et al. 2014; Allen et al., 2010)
In cultural ecosystems the restoration of these should include theconcomitant recovery of indigenous ecological managementpractices ….(SERI, on line)
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NASA Earth Observatory
Critically/threatened High endemic
High cultural value
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Biocultural landscape in Mexico• From classical and
posclasical periods• High number use
species• 45% indigenous
groups live near• Center of
leguminousendemism (Souza, 2010)
• High superficie current isdeterioration
• The restoration can not be postponed
Superficie Potential Curent % loss
Km2 258,579 164,357 36.44
- - - % deteriorated
Conserved - 70,720 56.97
Deteriorated - 93,637 -
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Gaps• Local governments have promoted restoration forestry with on
commercial timber forest
• The use with few species contrast with the floristic found in the forest
• Integration the interests of local communities with conservation
biodiversity
Dry forest in reserveVilla Allende…..as modelstudy
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Dry forest in Villa Allende
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Purpose of the studyDescribe of use value of tree natives that grow up in the secondary dry
forest and its relationship with ecological importance through structure
parameters in the forest reserve Villa Allende, Chiapas
Hypothesis
Exist relationship between the value use with the structure parameters of
secondary dry forest
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Study Area and background
Age 1
Age3
Age 2
Fieldwalks
10 years
19 years
35 years
More 40
Enterviews
Selection site criteria:homogeneity in the type of soiland previous land use
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Study Area and Background
LocalityNumber of
entervieweesAverage
age Ocupation
Man Woman Man Women A A+LA/L+SR L SR
Berriozábal 50 162.2
(10.8)60.0 (0.0)* 25 7 15 3 1
Plan de Ayala 29 4
69.0 (11.3)
52.75 (14.9) 18 1 12 0 2
Viva Cárdenas 26 1
63.3 (12.8)
58.0 (0.0)* 21 0 4 0 2
A=Agriculture; L=Livestock; SR= Employe
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Methods: floristic inventory
Number of speciesNumber of individuals
High > 1 mDHB > 5 cm
Variables measure
Kalacska et al. 2014
20 m
50 m
Specimen comparison and consultation with specialists
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Methods: interviewsFree list (Quilan, 2005)
Can you tell me the names of all the useful wild tree you know?
What do you use them for?
Do you know any other wild tree that can be used for?
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Analyst of dataUse value Ecological importance
Use value index by Phillips and Gentry (1993), and as modified by Rossato et al.(1999), using this formula:
UV=Σ Usi.N-1
UV is the total use value, where UV isequals the number of use mentioned byinformant i, for specie s. N is the total number informant interviewed for eachspecie (N=119)
Using the ecological importance value (EIV) according Mueller-Dombois and
Ellenberg (2002), by using the following formula:
EIV= Relative Dominance + Relative Density + Relative Frequency/ 3
We estimated the UV for every use categories
We estimated the EIV for every age abandoned the forest
Correlations Spearman:
• Comparing total and category use value with EIV global • Total use vale with EIV of every age abandoned
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Results and discussion• 102 use species, integrate in 77 genera and 37 families• Fabaceae was the most importan family with 29 species
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Results and discussionUse categories Number of species Proportion
Firewood 72 18.6
Pole 66 17.0
Construction 63 16.2
Medicinal 43 11.1
Wood 39 10.1
Ornamental 30 7.7
Food 24 6.2
Live fence 22 5.7
Fodder 18 4.6
Religious 11 2.8
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Results and discussion
Use categories Use subcategories Number of species
FirewoodDomesticIndustrial
738
ConstructionStructure of house
Others585
Medicinal
Circulatory systemGastrointestinal systemMusculoskeletal system
Urinary systemOthers
63310814
Wood
Structure cartDomestic tools
Work tolos FornitureOthers
21129303
Within the evaluated categories of use, seven were registered in 22 subcategories of use and 78 specific uses
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Results and discussionUse value global
• Eysenhardtia adenostylis Baill. (1.36) and Acacia pennatula (Schltdl. & Cham.) Benth. (1.29).
• 16 species multi-propouses showed a intermedie use value (0.34-0.97)
• 84.6% showed lower use values than 0.3
Ecological Importance general
• Luehea candida (Moc. & Sessé ex DC.) Mart. (3.88)• Tecoma stans (L.) Juss. ex Kunth (3.40)• Bursera simaruba (L.) Sarg. (3.42)• Montanoa tomentosa Cerv. (3.56)• The species with high use value showed low ecological
value (EVI=0.27-0.69)
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Results and discussionUse value by category
• Firewood and Fodder Acacia pennatula(UV= 0.82, 1.06)
• Construction and Pole was E.adenostylis (0.71, 0.64),
• Medicinal Bursera simaruba (0.46)• Wood Cedrela odorata (1) and
Swietenia humilis (0.95)• Ornamental Tecoma stans (0.18)• Food Persea americana Mill. (1.07)• Religious Sideroxylum capiri (1)• Live Fence Bursera simaruba (0.95)
Correlations
• Relative dominance of 19 age adandoned vs Use Value global (rs=0.30, P=0.04)
• Use value of ornamental category with relativedensidad of EIV global (rs=0.41, P=0.03).
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Conclusions• The high percentage of species with utilitarian value corroborates the
importance of the secondary BTC in the provision of plant species to theinhabitants of the peri-urban communities of the Villa Allende Reserve
• Eysenhardtia adenostylis and Acacia pennatula recorded the highest use values, cataloged as multipurpose species that satisfy the basic needs of the peasantfamilies
• The hypothesis initially proposed in this study was not fulfilled because we founda null or weak relation between the use value per species and thephytosociological parameters of secondary dry forest
• The secondary dry forest in Villa Allende provides useful tree species to satisfy the basic needs of the communities, although the cultural importance of these does not depend on its ecological importance.
.