Abstract
Forty-one endemic conifer species occur on New Caledonia’s ultramafic substrates (known locally as “terrains miniers”), the source of nickel ore deposits being exploited at a rapidly increasing rate. Impacts of the removal of native vegetation and its destruction by the deposition of mine wastes are compounded by fire, which has dramatically reduced and fragmented the original cover. A new threat evaluation of these conifers, now being incorporated into the IUCN Red List, is presented. A conservation action plan is proposed to ensure their long term survival. Four species are classified as Critically Endangered (CR), 13 Endangered (EN), 6 Vulnerable (VU), 7 Nearly Threatened (NT) and 11 Least Concern. Wetland habitats contain two threatened species (i.e., CR, EN or VU), all inadequately protected in a single reserve. High altitude forest and maquis (a characteristic scrub-like vegetation) have four threatened and three NT conifers only partially encompassed in protected areas, some open to mining. Thirteen threatened species are restricted to low- and mid-elevation forests, and another three that can also occur on non-ultramafic substrates have isolated, unprotected populations in small forest remnants. Fire and land clearing for mining threaten two conifer species in low- to mid-elevation maquis along with subpopulations of five primarily forest species. Conserving the threatened conifers on terrains miniers will require coordinated measures including: comprehensive protection of forest remnants by forbidding mine waste stockpiling; establishment of new reserves, especially in key unprotected massifs; effective fire prevention; restoration of forest corridors between forest remnants; and multiplication/transplanting of selected species.
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References
Bird EC, Dubois JP, Iltis JA (1984) The impacts of opencast mining on the rivers and coasts of New Caledonia. The United Nations University, Tokyo
Bobrov AVFC, Melikian AP, Romanov MS, Sorokin AN (2004) Seed morphology and anatomy of Austrotaxus spicata (Taxaceae) and its systematic position. Bot J Linn Soc 145:437–443
Bradford J, Jaffré T (2004) Plant species microendemism and conservation of montane maquis in New Caledonia: two new species of Pancheria (Cunoniaceae) from Roche Ouaïème. Biodivers Conserv 13:2253–2273
Brooks TM, Mittermeier RA, Mittermeier CG, da Fonseca GAB, Rylands AB, Konstant WR, Flick P, Pilgrim J, Oldfield S, Magin G, Hilton-Taylor C (2002) Habitat loss and extinction in the hotspots of biodiversity. Conserv Biol 16:909–923
Campbell DG (1989) The importance of floristic inventory in the tropics. In: Campbell DG, Hammond HD (eds) Floristic inventory of tropical countries: the status of plant systematics, collections, and vegetation, plus recommendations for the future. New York Botanical Garden, New York, pp 5–30
de Laubenfels DJ (1972) Gymnospermes. In: Aubréville A, Leroy J-F (eds) Flore de la Nouvelle-Calédonie et dépendances. Muséum National d’Histoire Naturelle, Paris, pp 1–168
de Laubenfels DJ (2003) A new species of Podocarpus from the maquis of New Caledonia. N Z J Bot 41:715–718
de Laubenfels DJ (2005) Statut du Podocarpus de l’Île des Pins (Nouvelle-Calédonie). Adansonia Sér 3 29:151–153
Dupon J-F (1986) Les effets de l’exploitation minière sur l’environnement des îles hautes: le cas de l’extraction du minerai de nickel en Nouvelle-Calédonie. South Pacific Regional Environmental Programme, Nouméa
Enright NJ, Rigg L, Jaffré T (2001) Environmental controls on species composition along a (maquis) shrubland to forest gradient on ultramafics at Mt Do, New Caledonia. S Afr J Sci 97:573–580
Enright NJ, Miller BP, Perry GLW (2003) Demography of the long-lived conifer Agathis ovata in maquis and rainforest, New Caledonia. J Veg Sci 14:625–636
Falcy MR, Estades C (2007) Effectiveness of corridors relative to enlargement of habitat patches. Conserv Biol 21:1341–1346
Farjon A, Page CN (1999) Conifers: status survey and conservation action plan. IUCN/SSC Conifer Specialist group. IUCN, Gland, Cambridge, p 121
Farjon A, Page CN, Schellevis N (1993) A preliminary world list of threatened conifer taxa. Biodivers Conserv 2:304–326
Honnay O, Jacquemyn H (2006) Susceptibility of common and rare plant species to the genetic consequences of habitat fragmentation. Conserv Biol 21:823–831
Hopkins HCF, Fogliani B, Pillon Y (2007) Four new species in the endemic genus Codia (Cunoniaceae) from New Caledonia. Kew Bull 62:259–274
IUCN (1994) IUCN Red List Categories. IUCN, Gland, Cambridge
IUCN (2001) IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland, Cambridge
IUCN (2008) IUCN Red List of Threatened Species. http://www.redlist.org/. Accessed 17 April 2009
Jaffré T (1980) Etude écologique du peuplement végétal des sols dérivés de roches ultrabasiques en Nouvelle-Calédonie. ORSTOM, Paris
Jaffré T (1992) Floristic and ecological diversity of the vegetation on ultramafic rocks in New Caledonia. In: Baker AJM et al (eds) The vegetation of ultramafic (serpentine) soils. Intercept Ltd, Andover, pp 101–107
Jaffré T (1995) Distribution and ecology of the conifers of New Caledonia. In: Enright NJ, Hill RS (eds) Conifers of the Southern Hemisphere. Melbourne University Press, Melbourne, pp 171–196
Jaffré T, Pelletier B (1992) Plantes de Nouvelle-Calédonie permettant de revégétaliser des sites miniers. SLN, Nouméa
Jaffré T, Latham M, Schmid M (1977) Aspects de l’influence de l’extraction du minerai de nickel sur la végétation et les sols en Nouvelle-Calédonie. Cah ORSTOM Sér Biol XII:307–321
Jaffré T, Veillon JM, Cherrier JF (1987) Sur la présence de deux Cupressaceae Neocallitropsis pancheri (Carr.) Laubenf. et Libocedrus austrocaledonica Brongn. et Gris dans le massif du Paéoua et localités nouvelles de Gymnospermes en Nouvelle-Calédonie. Bull Mus Natl Hist Nat Paris ser 4 B 9:273–288
Jaffré T, Veillon JM, Pintaud JC (1997) Comparaison de la diversité floristique des forêts denses humides sur roches ultramafiques et sur substrats différents en Nouvelle-Calédonie. In: Jaffré T et al (eds) Ecologie des milieux sur roches ultramafiques et des sols métallifères: actes de la 2ème Conférence internationale sur l’Ecologie des milieux serpentiniques. ORSTOM, Nouméa, pp 163–170
Jaffré T, Bouchet P, Veillon JM (1998) Threatened plants of New Caledonia: is the system of protected areas adequate? Biodivers Conserv 7:109–135
Jaffré T, Morat P, Rigault F, Veillon JM, Dagostini G (2001) Composition and characteristics of the native flora of New Caledonia. IRD, Nouméa
Jaffré T, Dagostini G, Rigault F (2003) Identification, typologie et cartographie des groupements végétaux de basse altitude du Grand Sud Calédonien et de la vallée de la Tontouta. Rapport de convention. IRD, Nouméa
Kettle CJ (2006) Conservation genetics of New Caledonia Araucaria. Ph.D. thesis, University of Edinburgh, Edinburgh, UK
Kettle CJ, Hollingsworth PM, Jaffré T, Moran B, Ennos RA (2007) Identifying the early genetic consequences of habitat degradation in a highly threatened tropical conifer, Araucaria nemorosa Laubenfels. Mol Ecol 16:3581–3591
Kettle CJ, Ennos RA, Jaffré T, Gardner M, Hollingsworth PM (2008) Cryptic genetic bottlenecks during restoration of an endangered tropical conifer. Biol Conserv 141:1953–1961
Knopf P, Nimsch H, Stützel T (2007) Dacrydium × suprinii, sp. nova—a natural hybrid of Dacrydium araucarioides × D. guillauminii. Feddes Reper 118:51–59
Kranitz ML (2005) Systematics and evolution of New Caledonian Araucaria. Ph.D. Thesis, University of Edinburgh, Edinburgh, UK
Lande R (1993) Risks of population extinction from demographic and environmental stochasticity and random catastrophes. Am Nat 142:911–927
Lowry PP II (1998) Diversity, endemism, and extinction in the flora of New Caledonia: a review. In: Peng C-I, Lowry PP II (eds) Rare, threatened, and endangered floras of Asia and the Pacific. Monograph series, vol 16. Institute of Botany, Academica Sinica, Taipei, pp 181–206
Lowry PP II, Plunkett GM, Raquet V, Sprenkle TS, Jérémie J (2004a) Inclusion of the endemic New Caledonian genus Pseudosciadium in Delarbrea (Apiales, Myodocarpaceae). Adansonia Sér 3 26:251–256
Lowry PP II, Munzinger J, Bouchet P, Géraux H, Bauer A, Langrand O, Mittermeier RA (2004b) New Caledonia. In: Mittermeier RA et al (eds) Hotspots revisited: earth’s biologically richest and most threatened terrestrial ecoregions. CEMEX, Mexico, pp 193–197
Manauté J, Jaffré T, Veillon JM, Kranitz ML (2003) Revue des Araucariaceae de Nouvelle-Calédonie. IRD/Province Sud, Nouméa
Mittermeier RA, Werner TB, Lees A (1996) New Caledonia, a conservation imperative for an ancient land. Oryx 30:104–112
Morat P (1993) Our knowledge of the flora of New Caledonia: endemism and diversity in relation to vegetation types and substrates. Biodivers Lett 1:72–81
Morat P, Chalopin M (2007) Contribution à l’étude des Malvaceae, Sterculieae de la Nouvelle-Calédonie: nouvelles espèces dans le genre Acropogon Schltr. Adansonia Sér 3 29:93–104
Morat P, Jaffré T, Veillon JM, MacKee HS (1986) Affinités floristiques et considérations sur l’origine des maquis miniers de la Nouvelle-Calédonie. Bull Mus Natl Hist Nat Paris ser 4 B 8:133–182
Morat P, Jaffré T, Veillon JM (1999) Menaces sur les taxons rares de la Nouvelle-Calédonie. Actes du Colloque sur les espèces végétales menacées de France. Bull Soc Bot Sud-Ouest 19:129–144
Mouly A, Pisivin C (2007) Rare and threatened new endemic Ixora (Rubiaceae) from New Caledonia. Nordic J Bot 25:14–19
Munzinger J, Swenson U (2009) Three new species of Planchonella (Sapotaceae) with a dichotomous and an online key to the genus in New Caledonia. Adansonia Sér 3 31:175–189
Munzinger J, McPherson G, Lowry PP II (2008) A second species in the endemic New Caledonian genus Gastrolepis (Stemonuraceae) and its implications for the conservation status of high-altitude maquis vegetation: coherent application of the IUCN Red List criteria is urgently needed in New Caledonia. Bot J Linn Soc 157:775–783
Myers N (1988) Threatened biotas: “Hot Spots” in tropical forests. Environmentalist 8:1–20
Myers N, Mittermeier RA, Mittermeier CG, da Fonseca GAB, Kent J (2000) Biodiversity hotspots for conservation priorities. Nature 403:853–858
Nasi R, Jaffré T, Sarrailh JM (2002) Les forêts de montagnes de Nouvelle-Calédonie. Bois For Trop 274:5–17
Oostermeijer JGB, Luijten SH, den Niijs JCM (2003) Integrating demographic and genetic approaches in plant conservation. Biol Conserv 113:389–398
Page CN (1988) New and maintained genera in the conifer families Podocarpaceae and Pinaceae. Notes RBG Edinb 45:377–395
Pascal M, Richer De Forges B, Le Guyader H, Simberloff D (2008) Mining and other threats to the New Caledonia biodiversity hotspot. Conserv Biol 22:498–499
Pelletier B. 1990. Techniques minières permettant de préserver l’environnement autour des gisements de nickel Néo-Calédonien, UFP Nouméa. International Society for Reef Studies, pp 27–34
Pillon Y, Munzinger J (2005) Amborella fever and its (little) implication in conservation. Trends Plant Sci 10:519–520
Pillon Y, Hopkins HC, Bradford JC (2008) Two new species of Cunonia (Cunoniaceae) from New Caledonia. Kew Bull 63:419–431
Rigg LS (2005) Disturbance processes and spatial patterns of two emergent conifers in New Caledonia. Austral Ecol 30:363–373
Rigg LS, Enright NJ, Jaffré T (1998) Stand structure of the emergent conifer Araucaria laubenfelsii, in maquis and rainforest, Mont Do, New Caledonia. Aust J Ecol 23:528–538
Saunders DA, Hobbs RJ, Margules CR (1991) Biological consequences of ecosystem fragmentation: a review. Conserv Biol 5:18–32
Savolainen O, Kuittinen H (2000) Small population processes. In: Young A et al (eds) Forest conservation genetics. CSIRO Publishing, Collingwood, pp 91–100
Setoguchi H, Ohsawa P, Pintaud JC, Jaffré T, Veillon JM (1998) Phylogenic relationship of Araucariaceae inferred from rbcL gene sequence. Am J Bot 85:1507–1516
Soltis P, Gitzendanner MA (1999) Molecular systematics and the conservation of rare species. Conserv Biol 13:471–483
Swenson U, Munzinger J, Bartish I (2007) Molecular phylogeny of Planchonella (Sapotaceae) and eight new species from New Caledonia. Taxon 56:329–354
Tucker NIJ (2000) Linkage restoration: interpreting fragmentation theory for the design of a rainforest linkage in the humid wet tropics of north-eastern Queensland. Ecol Manag Restor 1:35–41
Virot R (1956) La végétation canaque. Mém Mus Natl His Nat B 7:1–400
Waters T (2008) Systematics of Agathis Salisb (Araucariaceae). Ph.D. Thesis, University of Oxford, UK
Watt A (1999) Conifers in New Caledonia. In: Farjon A, Page CN (eds) Conifers: status survey and conservation action plan. IUCN/SSC Conifer Specialist Group, IUCN, Gland, Cambridge, p 121
Whiting SN, Reeves RD, Richards D, Johnson MS, Cooke JA, Malaisse F, Paton A, Smith JAC, Angle JS, Chaney RL, Ginocchio R, Jaffré T, Johns R, MacIntyre T, Purvis OW, Salt DE, Schat H, Zhao FJ, Baker AJM (2004) Research priorities for conservation of metallophyte biodiversity and its sustainable uses in ecological restoration and site. Restor Ecol 12:106–116
Young A, Boyle T (2000) Forest fragmentation. In: Young A et al (eds) Forest conservation, genetics principles and practice. CSIRO Publishing, Collingwood, pp 123–124
Young A, Boyle T, Brown T (1996) The population genetic consequences of habitat fragmentation for plants. Trends Ecol Evol 11:413–418
Acknowledgments
Thanks to Marie-Hélène Bridet (INRA) for assistance with the bibliography and L. Barrabé (IRD) for comments on an early version of the manuscript. We are indebted to the staffs and collectors at the herbaria of the Muséum National d’Histoire Naturelle (P), the Missouri Botanical Garden (MO) and the Institut de recherche pour le développement (NOU), and we thank Ph. Thomas, A. Farjon, and M. Gardner of the IUCN/SSC Conifer Specialist Group, who collaborated on the threat assessments of the species examined, as well as F. Rigault (IRD-NOU) for preparation of Figs. 1 and 2. Thanks also to the Direction de l’Environnement of the South Province and to the Direction du Développement Economique et de l’Environnement of the North Province of New Caledonia for providing collecting permits, and to two anonymous reviewers for helpful comments on the manuscript.
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Jaffré, T., Munzinger, J. & Lowry, P.P. Threats to the conifer species found on New Caledonia’s ultramafic massifs and proposals for urgently needed measures to improve their protection. Biodivers Conserv 19, 1485–1502 (2010). https://doi.org/10.1007/s10531-010-9780-6
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DOI: https://doi.org/10.1007/s10531-010-9780-6