Abstract
Sustainable use of nontimber forest products (NTFPs) can be affected by levels of extractions as well as by other anthropogenic influences such as fire and grazing. We examined the effects of fire on the demography of Phyllanthus emblica, an important NTFP in the forests of Biligiri Rangan Hills, India. We then assessed demographic responses to the combined effects of fire and current fruit harvesting patterns. Fruits of Phyllanthus are commercially harvested by an indigenous forest dwelling people. Using matrix population models, we compared demographic indices across a chronosequence of time since last fire. Population growth rates (λ) ranged from 0.7692 to 1.1443 across the five times since last fire. λ was the lowest at times since last fire of 2 and 3 yr. Frequent fires increased time to maturity by altering growth and survival rates, thereby causing a demographic shift from growth to regressions or negative growth. Elasticity analysis revealed that stasis of adults makes the biggest contribution to λ. Simulations of periodic and stochastic fire regimes suggest that higher λ and population persistence can be achieved at fire-return intervals of ≥7 and ≥9 yr, respectively. These fire-return intervals became longer when the simulations included harvesting and fire. Extinction probabilities under the current fire regimes (every 2–3 yr) suggest that populations will decline to lower densities. Our findings provide critical information for developing guidelines for sustainable use and management of NTFPs in Biligiri Rangan Hills, and demonstrate the need to incorporate various human-generated physical regimes in assessing sustainability of NTFPs.
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References
A.B. Anderson (1992) ArticleTitleLand-use strategies for successful extractive economies in Amazonia Adv. Econom. Bot. 9 67–77
M.S. Ashton R. Mendelsohn B.M.P. Singhakumara C.V.S. Gunatilleke I.A.U.N. Gunatilleke A. Evans (2001) ArticleTitleA financial analysis of rain forest silviculture in southwestern Sri Lanka Forest Ecol. Manage. 154 431–441
W.B. Batista W.J. Platt R.E. Macchiavelli (1998) ArticleTitleDemography of a shade-tolerant tree (Fagus grandifolia) in a hurricane-disturbed forest Ecology 79 38–53
J.O. Browder (1992) Social and economic constraints on the development of market-oriented extractive reserves in Amazon rain forests D.C. Nepstad S. Schwartzman (Eds) Non-timber Products from Tropical Forests: Evaluation of a Conservation and Development Strategy. Advances in Economic Botany NumberInSeriesVol. 9. The New York Botanical Garden Bronx, USA 33–44
M.A. Burgman S. Ferson H.R. Akçakaya (1993) Risk Assessment in Conservation Biology Chapman and Hall New York
J. Canales M.C. Trevisan J.F. Silva H. Caswell (1994) ArticleTitleA demographic study of an annual grass (Andropogon brevfolius Schwarz) in burnt and unburnt savanna Acta Oecologica 15 261–263
H. Caswell (1986) ArticleTitleLife cycle models for plants Lect. Math. Life Sci. 18 171–233
H. Caswell (1989) ArticleTitleAnalysis of life table response experiments 1. Decomposition of effects on population growth rate Ecol. Modell. 46 221–237 Occurrence Handle10.1016/0304-3800(89)90019-7 Occurrence Handle1:CAS:528:DyaL1MXmt1Klt78%3D
H. Caswell (2000a) Matrix Population Models Sinauer Associate Inc. Massachusetts, USA
H. Caswell (2000b) ArticleTitleProspective and retrospective perturbation analyses: their roles in conservation biology Ecology 81 619–627
H. Caswell T.N. Kaye (2001) ArticleTitleStochastic demography and conservation of an endangered perennial plant (Lomatium bradshawii) in a dynamic fire regime Adv. Ecol. Res. 32 1–51
H. Caswell P. Werner (1978) ArticleTitleTransient behaviour and life history analysis of teasel (Dipsacus sylvestris huds.) Ecology 59 53–66
R.C. Chambers N.C. Saxena T. Shah (1989) To the Hands of the Poor: Water and Trees Westview Press Boulder, CO
H. de Kroon J.V. Groenendael J. Ehrlén (2000) ArticleTitleElasticities: a review of methods and model limitations Ecology 81 607–618
B. Efron R.J. Tibshirani (1993) An Introduction to the Bootstrap Chapman and Hall New York, NY, USA
J. Ehrlén J.V. Groenendael (1998) ArticleTitleDirect perturbation analysis for better conservation Conserv. Biol. 12 470–474
J. Ehrlén J.V. Groenendael H. de Kroon (2001) ArticleTitleReliability of elasticity analysis: reply to Mills et al Conserv. Biol. 15 278–280
N.J. Enright A.D. Watson (1991) ArticleTitleA matrix model analysis for the tropical treeAraucaria cunninghamii Aust. J. Ecol. 16 507–520
Frost P., Medina E., Menaut J.C., Solbrig O., Swift M. and Walker B. 1986. Responses of savannas to stress and disturbance. Biology International Special Issue 10.
L.R. Ginzburg L.B. Slobodkin K. Johnson A.G. Bindman (1982) ArticleTitleQuasi-extinction probabilities as a measure of impact on population growth Risk Anal. 21 171–181
A. Grimes et al. (1994) ArticleTitleValuing the rainforest: the economic value of nontimber forest products in Equador Ambio 23 405–410
K. Gross J.R. Lockwood C.C. Frost W.F. Morris (1998) ArticleTitleModeling controlled burning and trampling reduction for conservation of Hudsonia montana Conserv. Biol. 12 1291–1301 Occurrence Handle10.1046/j.1523-1739.1998.97285.x
P. Hall K.S. Bawa (1993) ArticleTitleMethods to assess the impact of extraction of non-timber tropical forest products on plant populations Econom. Bot. 47 234–247
W.A. Hoffmann (1999) ArticleTitleFire and population dynamics of woody plants in a neotropical savanna: matrix model projections Ecology 80 1354–1369
T.N. Kaye K.L. Pendergrass K. Finley J.B. Kaufman (2001) ArticleTitleThe effect of fire on the population viability of an endangered prairie plant Ecol. Appl. 11 1366–1380
J.V. LaFrankie (1994) ArticleTitlePopulation dynamics of some tropical trees that yield non-timber forest products Econom. Bot. 48 301–309
Malhotra K.C., Deb D., Dutta M., Vasula T.S., Yadav G. and Adhikari M. 1991. Role of non-timber forest products in village economy: a household survey in Jamboni RangeMidnaporeWest Bengal, India. Indian Institute of Bio-social Research and Development.
J. Maschinski R. Frye S. Rutman (1997) ArticleTitleDemography and population viability of an endangered plant species before and after protection from trampling Conserv. Biol. 11 990–999 Occurrence Handle10.1046/j.1523-1739.1997.96159.x
InstitutionalAuthorNameMathWorks, Inc. (2002) Matlab: The Language for Technical Computing Prentice Hall NJ, USA
E.C. Menges (1990) ArticleTitlePopulation viability analysis for an endangered plant Conserv. Biol. 4 52–62 Occurrence Handle10.1111/j.1523-1739.1990.tb00267.x
P. Nantel D. Gagon A. Nault (1996) ArticleTitlePopulation viability analysis of American ginseng and wild leek harvested in stochastic environments Conserv. Biol. 10 608–621 Occurrence Handle10.1046/j.1523-1739.1996.10020608.x
K. Narendran I.K. Murthy H.S. Suresh H.S. Dattaraja N.H. Ravindranath R. Sukumar (2001) ArticleTitleNontimber forest product extraction, utilization and valuation: a case study from the Nilgiri Biosphere Reservesouthern India Econom. Bot. 55 528–538
D.C. Nepstad F. Brown L. Luz A. Alechandra V. Viana (1992) Biotic impoverishment of Amazonian forests by rubber tappers, loggers, and cattle ranchers D.C. Nepstad S. Schwartzman (Eds) Non-timber Products from Tropical Forests: Evaluation of a Conservation and Development Strategy The New York Botanical Garden Bronx, USA 1–14
R.P. Neumann E. Hirsch (2000) Commercialization of Non-timber Forest Products: Review and Analysis of Research Centre for International Forestry Research Bogor, Indonesia
I. Olmst E.R. Alvarez-Buylla (1995) ArticleTitleSustainable harvesting of tropical trees: demography and matrix models of two palm species in Mexico Ecol. Appl. 5 484–500
G.D. Paoli D.R. Peart M. Leighton I. Samsoedin (2001) ArticleTitleAn ecological and economic assessment of the nontimber gaharu wood in the Gunung Palung National Park, West Kalimantan, Indonesia Conserv. Biol. 15 1721–1732 Occurrence Handle10.1046/j.1523-1739.2001.98586.x
M. Peña-Claros (1996) Ecological and socioeconomic aspects of palm heart extraction on populations of Euterpe precatoria in Bolivia. M.S. thesis University of Florida Gainesville, USA
C.M. Peters (1991) Plant demography and the management of tropical forest resources: a case study of Brosimum alicastrum in Mexico A. Gomez-Pompa T.C. Whitmore M. Hadley (Eds) Rain Forest Regeneration and Management The Parthenon Publishing Group UK 265–272
C.M. Peters A.H. Gentry R.O. Mendelsohn (1989) ArticleTitleValuation of an Amazonian rain forest Nature 339 655–656 Occurrence Handle10.1038/339655a0
D. Pilz R. Molina (2002) ArticleTitleCommercial harvesting of edible mushrooms from the forests of the Pacific Northwest United States: issues, managementand monitoring for sustainability Forest Ecol. Manage. 155 3–16
M. Pinard (1993) ArticleTitleImpacts of stem harvesting on populations of Iriartea deltoidea (Palmae) in an extractive Reserve in AcreBrazil Biotropica 25 2–14
D. Piñero M. Martinez-Ramos J. Sarukhan (1984) ArticleTitleA population model of Astrocaryum mexicanuma sensitivity analysis of its finite rate of increase J. Ecol. 72 977–991
P.F. Quintana-Ascencio E.S. Menges C.W. Weekley (2003) ArticleTitleA fire-explicit population viability analysis of Hypericum cumulicola in Florida Rosemary scrub Conserv. Biol. 17 433–449 Occurrence Handle10.1046/j.1523-1739.2003.01431.x
Ramesh B.R. 1989. Evergreen forests of the Biligiri Rangan Hills, South India. Ph.D. dissertation, French InstitutePondicherry, India.
J. Ratsirarson J.A. Silander A.F. Richard (1996) ArticleTitleConservation and management of a threatened Madagascar palm species, Neodypsis decaryiJumelle Conserv. Biol. 10 40–52 Occurrence Handle10.1046/j.1523-1739.1996.10010040.x
J.V. Runk (1998) ArticleTitleProductivity and sustainability of a vegetable ivory palm (Phytelephas aequatorialisArecaceae) under three management regimes in Northwestern Equador Econom. Bot. 52 168–182
J. Salick A. Mejia T. Anderson (1995) ArticleTitleNon-timber forest products integrated with natural forest managementRio San Juan, Nicaragua Ecol. Appl. 5 878–895
P.A. Schmalzer C.R. Hinkle (1996) ArticleTitleBiomass and nutrients in above ground vegetation and soils in Florida oak-saw palmetto scrub Castanea 61 168–193
S.A. Setterfield (1997) ArticleTitleThe impact of experimental fire regimes on seed production in the two tropical eucalypt species in northern Australia Aust. J. Ecol. 22 279–287
J.F. Silva J. Raventos H. Caswell M.C. Trevisan (1991) ArticleTitlePopulation responses to fire in a tropical savanna grass, Andropogon semiberbis: a matrix model approach J. Ecol. 79 345–356
J. Silverton M. Franco I. Pisanty A. Mendoza (1993) ArticleTitleComparative plant demography. Relative importance of life-cycle components to the finite rate of increase in woody and herbaceous perennials J. Ecol. 81 465–476
A. Sinha (2000) Sustainability of fruit extractions from two nontimber forest product tree species, Phyllanthus emblica and P. indofischeri, in the forests of south India. Ph.D. dissertation University of Massachusetts Boston, USA
A. Sinha K.S. Bawa (2002) ArticleTitleHarvesting techniques, hemiparasites and fruit production in two nontimber forest tree species in south India Forest Ecol. Manage. 168 289–300
R.R. Sokal F.J. Rohlf (1994) Biometry EditionNumber3 W.H. Freeman and Company New York
D.D. Tewari (1998) Economics and Management of Nontimber Forest Products: A Case Study of GujaratIndia Oxford & IBH Publishing Co. Pvt. Ltd India
T. Ticktin P. Nantel F. Ramirez T. Johns (2003) ArticleTitleEffects of variation on harvest limits for nontimber forest species in Mexico Conserv. Biol. 160 691–705
R. Vasquez A.H. Gentry (1989) ArticleTitleUse and misuse of forest-harvested fruits in the Iquitos area Conserv. Biol. 3 350–361 Occurrence Handle10.1111/j.1523-1739.1989.tb00241.x
C.J. West (1995) ArticleTitleSustainability of Beilschmiedia tawa – dominated forest in New Zealand: population predictions based on transition matrix model analysis Aust. J. Ecol. 43 51–71
World Resource Institute. 1990. The World Bank in the forest Sector: a global policy paper. Washington, DC.
Zuidema P.A. 2000. Demography of exploited tree species in the Bolivian Amazon. Ph.D. thesis, Utrecht University. PROMAB Scientific Series Nr 2.
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Sinha, A., Brault, S. Assessing Sustainability of Nontimber Forest Product Extractions: How Fire Affects Sustainability. Biodivers Conserv 14, 3537–3563 (2005). https://doi.org/10.1007/s10531-004-0827-4
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DOI: https://doi.org/10.1007/s10531-004-0827-4