An experimental approach to addressing ecological questions related to the conservation of plant biodiversity in China

Abstract

Abstract:

We briefly introduce and describe seven questions related to community structure and biodiversity conservation that can be addressed using field experiments, and provide the context for using the vast geographic diversity, biodiversity, and network of Nature Reserves in China to perform these experiments. China is the world′s third largest country, has a diverse topography, covers five climatic zones from cold-temperate to tropical, has 18 vegetation biomes ranging from Arctic/alpine tundra and desert to Tropical rain forest, and supports the richest biodiversity in the temperate northern hemisphere (>10% of the world total). But this tremendous natural resource is under relentless assault that threatens to destroy biodiversity and negatively impact the services ecosystems provide. In an attempt to prevent the loss of biodiversity, China has established 2,729 nature reserves which cover 14.84% of the nation′s area. Unfortunately underfunding, mismanagement, illegal activities, invasive species and global climate change threaten the effectiveness of these protected areas. Attention has focused on protecting species and their habitats before degradation and loss of either species or habitats occur. Here we argue that we must move beyond the simple protection of ecosystems, beyond their description, and by using experiments, try to understand how ecosystems work. This new understanding will allow us to design conservation programs, perform restoration of damaged or degraded areas, and address resource management concerns (e.g., agriculture, logging, mining, hunting) more effectively than with the current approach of ad hoc reactions to ecological and environmental problems.We argue that improving our understanding of nature can best be done using well designed, replicated, and typically manipulative field experiments.

Key words: Biodiversity, Climate change, Community structure, Conservation, Ecosystem Function, Ecosystem Services, Experiments, Gradients

Roy Turkington, William L. Harrower. An experimental approach to addressing ecological questions related to the conservation of plant biodiversity in China[J]. Plant Diversity, 2016, 38(01): 1-10.

References

Anonymous, 2000. China′s National Committee on Man and Biosphere, Study of Sustainable Management Policies for China′s Nature Reserves (in Chinese) (Scientific and Technical Documents Publishing House, Beijing, China).
Balmford, A., Bruner, A., Cooper, P., et al., 2002. Economic reasons for conserving wild nature. Science. 297(5583), 950-953. http://doi.org/10.1126/science.1073947.
Balvanera, P., Pfisterer, A.B., Buchmann, N., et al., 2006. Quantifying the evidence for biodiversity effects on ecosystem functioning and services. Ecol. Lett. 9, 1146-1156. doi: 10.1111/j.14610248.2006.00963.x.
Barnosky, A.D., Matzke, N., Tomiya, S., et al., 2011. Has the Earth′s sixth mass extinction already arrived? Nature. 471, 51-57.
Borer, E.T., Seabloom, E.W., Gruner, D.S., et al., 2014. Herbivores and nutrients control grassland plant diversity via light limitation. Nature. 508, 517-20. http://doi.org/10.1038/nature13144.
Bond, W.J., 2005. Large parts of the world are brown or black: A different view on the ‘Green World’ hypothesis. J. Veg. Sci. 16, 261-266.
Bruelheide, H., Nadrowski, K., Assmann, T., et al., 2014. Designing forest biodiversity experiments: general considerations illustrated by a new large experiment in subtropical China. Meth. Ecol. Evol. 5, 74-89. DOI: 10.1111/2041210X.12126.
Cardinale, B.J., Duffy, J.E., Gonzalez, A., et al., 2012. Biodiversity loss and its impact on humanity. Nature. 486, 59-67.
Cardinale, B.J., Srivastava, D.S., Duffy, J.E., et al., 2006. Effects of biodiversity on the functioning of trophic groups and ecosystems. Nature. 443, 989-992.
Ceballos, G., Ehrlich, P.R., Barnosky, A.D., et al., 2015. Accelerated modern humaninduced species losses: Entering the sixth mass extinction. Sci. Adv., 1, no. 5, e1400253. DOI: 10.1126/sciadv.1400253.
Chapman, A.D., 2009. Numbers of living species in Australia and the world (2nd ed.). Australian Biological Resources Study. 1-80, Canberral.
Convention on Biological Diversity, 2010. https://www.cbd.int/countries/profile/default.shtml?country=cn (accessed 1 December 2015).
Costanza, R., Arge, R., Groot, R. De, et al., 1997. The value of the world′s ecosystem services and natural capital. Nature. 387, 253-260. http://doi.org/10.1038/387253a0.
Crawley, M.J., 1997. Plantherbivore dynamics. In: Crawley M.J. (ed.), Plant Ecology, 2nd ed. Blackwell, Oxford. 401-474. DOI: 10.1080/10643389.2010.502645.
Crawley, M.J., Johnston, a E., Silvertown, J., et al., 2005. Determinants of species richness in the Park Grass Experiment. Am. Nat. 165(2), 179-192. http://doi.org/10.1086/427270.
Díaz, S., Cabido, M., 2001. Vive la différence: plant functional diversity matters to ecosystem processes. Trends Ecol. Evol. 16(11), 646-655. http://doi.org/10.1016/S01695347(01)022832.
Díaz, S., Symstad, A.J., Chapin F.S., III, et al., 2003. Functional diversity revealed by removal experiments. Trends Ecol. Evol. 18, 140-146.
Doak, D.F., Bigger, D., Harding, E.K., et al., 1998. The Statistical Inevitability of StabilityDiversity Relationships in Community Ecology. Amer. Natur. 51(3), 264-276.
Duffy, J.E., 2009. Why biodiversity is important to the functioning of realworld ecosystems. Front Ecol. Environ. 7, 437-444. http://dx.doi.org/10.1890/070195.
Dyer, L.A., Letourneau, D., 2002. Topdown and bottomup diversity cascades in detrital vs. living food webs. Ecol. Lett. 6, 60-68.
Dyer, L., Letourneau, D., 2013. Can Climate Change Trigger Massive Diversity Cascades in Terrestrial Ecosystems? Diversity. 5, 479-504.
Editorial Committee for Vegetation of China, 1980. Vegetation of China. Science Press, Beijing.
Elton, C.S., 1958. The Ecology of Invasions by Animals and Plants. University of Chicago Press. Chicago IL.
Ehrlich, P.R., Wilson, E.O., 1991. Biodiversity studies: science and policy. Science. 253, 758-762.
Estes, J.A., Terborgh, J., Brashares, J.S., et al., 2011. Trophic downgrading of planet Earth. Science. 333, 301-6.
Fretwell, S.D., 1977. The regulation of plant communities by food chains exploiting them. Perspect. Biol. Med. 20, 169-185.
Fretwell, S.D., 1987. Food chain dynamics: the central theory of ecology? Oikos. 50, 291-301.
Gao, Q.Z., Li, Y., Wan, Y.F., et al., 2009. Significant achievements in protection and restoration of alpine grassland ecosystem in Northern Tibet, China. Restor. Ecol. 17, 320-323. doi: 10.1111/j.1526100X.2009.00527.x.
Hairston, N.G., Smith, F.E., Slobodkin, L.B., 1960. Community structure, population control, and competition. Am. Nat. 94.879, 421-425.
Harkness, J., 1998. Recent trends in forestry and conservation of biodiversity in China. China Quart. 156, 911-934. doi:10.1017/S0305741000051390.
Hartley, S.E., Jones, C.G., 1997. Plant chemistry and herbivory, or why the world is green. In: Crawley M.J. (ed.), Plant Ecology, 2nd ed, 284-324. Blackwell, Oxford.
Hockings, M., 2003. Systems for assessing the effectiveness of management in protected areas. Bioscience. 53, 823-832.
Holling, C.S., 1986. The resilience of terrestrial ecosystems: local surprise and global change, 297-317. In: Clark, W.C., Munn, R.E. (eds.) Sustainable Development of the Biosphere. Cambridge Univ. Press, Cambridge.
Hooper, D.U., Chapin, F.S., Ewel, J.J., et al., 2005. Effects of biodiversity on ecosystem functioning: a consensus of current knowledge. Ecol. Monogr. 75, 3-35.
Hooper, D.U., Vitousek, P.M., 2011. The Effects of Plant Composition and Diversity on Ecosystem Processes. 277(5330), 1302-1305.
Hooper, D.U., Adair, C.E., Cardinale, B.J., et al., 2012. A global synthesis reveals biodiversity loss as a major driver of ecosystem change. Nature. 486, 105-108.
He, H., Pan, Y., Zhu, W., et al., 2005. Measurement of terrestrial ecosystem service value in China. Chin. J. Appl. Ecol. 16, 1122-1127.
IPCC, 2014. Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. In: Core Writing Team Pachauri, R.K., Meyer, L.A. (eds.), IPCC, Geneva, Switzerland, 151.
Isbell, F., 2014. Ecosystem Services. In: Gibson, D. (ed.), Oxford Bibliographies in Ecology. Oxford University Press, NY. DOI: 10.1093/OBO/97801998300600052.
IUCN, 2002. www.iucn.org/themes/ssc/redlist2002/rl_news.htm.
Jiang, Y., Kang, M., Gao, Q., et al., 2003. Impact of land use on plant biodiversity and measures for biodiversity conservation in the Loess Plateau in Chinaa case study in a hillygully region of the Northern Loess Plateau. Biodivers. Conserv. 12, 1212-2133.
Kay,J.J., 1991. A nonequilibrium thermodynamic framework for discussing ecosystem theory. Environment Management. 15, 483-495.
Kay,J.J., Schneider, E.D., 1992. Thermodynamics and Measures of Ecosystem Integrity. In: Ecological Indicators, Volume 1, McKenzie, D.H., Hyatt, D.E., Mc Donald, V.J. (eds.). Proceedings of the International Symposium on Ecological Indicators, Fort Lauderdale, Florida, Elsevier, 159-182.
Lawton, J.H., Naeem, S., Thompson, L.J., et al., 1998. Biodiversity and ecosystem function: getting the Ecotron experiment in its correct context. Funct. Ecol. 12, 843-856.
Lawton, J.H., Brown, V.K., 1993. Redundancy in ecosystems. In: Schulze, E.D., Mooney, H.A. (eds.), Biodiversity and Ecosystem Function, 255-270. Springer, Berlin.
Levine, J.M., 2000. Species diversity and biological invasions. Science. 288, 852-854.
Liu, J., Linderman M., Ouyang Z., et al., 2001. Ecological degradation in protected areas: the case of Wolong nature reserve for giant pandas. Science. 292, 98-101.
Liu, J., Ouyang, Z., Pimm, S.L., et al., 2003. Protecting China′s Biodiversity. Science. 300(5623), 1240-1241.
MacArthur, R.H., 1972. Geographical Ecology. Harper and Rowe. New York.
May, R.M., 1977. Thresholds and breakpoints in ecosystem with multiplicity of stable states. Nature. 269, 471-477.
Metcalfe, D.B., Asner, G.P., Martin, R. E., et al., 2014. Herbivory makes major contributions to ecosystem carbon and nutrient cycling in tropical forests. Ecol. Lett. 17(3), 324-32. http://doi.org/10.1111/ele.12233.
Ministry of Environmental Protection, 2015. The 2014 report on the state of the environment in China. http://www.gzhjbh.gov.cn/images/dtyw/tt/gndttt/2014/6/5/7e4df35fd266429e82696eba756c24f8.pdf (in Chinese, last accessed in November 30, 2015).
Moen, J., Gardefjell, H., Oksanen, L., et al., 1993, Grazing by foodlimited Microtine rodents on a productive experimental plant community: does the green desert exist? Oikos. 68, 401-413.
Naeem, S., Li, S., 1997. Biodiversity enhances ecosystem reliability. Nature. 390, 507-507.
Ni, J., 2001. A biome classification of China based on plant functional types and the BIOME3 model. Folia Geobot. 36, 113-129.
O’Connor, M.I., Bernhardt, J.R., Caulk N.C., 2015. Food Webs. iIn Oxford Bibliographies in Ecology. Ed. D. Gibson. Oxford University Press, NY. DOI: 10.1093/OBO/97801998300600138.
Oksanen, L., Oksanen, T., 2000. The logic and realism of the hypothesis of exploitation ecosystems. Am. Nat. 155, 703-723.
Oksanen, L., Fretwell, S.D., Arruda, J., et al., 1981. Exploitation systems in gradients of primary productivity. Am. Nat. 118, 240-261.
Peart, B., 2008. Life in a Working Landscape: Towards a Conservation Strategy for the World′s Temperate Grasslands. Report of the XXI International Grasslands Congress/VIII International Rangeland Congress, Hohhot, Inner Mongolia, China.
Pimm, S.L., 1984. The complexity and stability of ecosystems. Nature. 307, 321-326.
Pimm, S.L., 1991. The Balance of Nature: Ecological Issues in the Conservation of Species and Communities. The University of Chicago Press, Chicago.
Polis, G.A., 1999. Why are parts of the world green? Multiple factors control productivity and the distribution of biomass. Oikos. 86, 3-15.
Quan, J., Ouyang, Z., Xu, W., et al., 2011, Assessment of the effectiveness of nature reserve management in China. Biodivers. Conserv. 20, 779-792.
Regier, H.A., 1992. Ecosystem integrity in the Great Lakes Basin: An historical sketch of ideas and actions. J. Aquatic Ecosystem Health. 1, 25-37.
Sandel, B., Smith, A.B., 2009. Scale as a lurking factor: incorporating scaledependence in experimental ecology. Oikos. 118, 1284-1291.
Schmitz, O.J., Hambck, P.A., Beckerman A.P., et al., 2000. Trophic cascades in terrestrial systems: a review of the effects of carnivore removal on plants. Am. Nat. 155, 141-153.
Schmitz, Hawlena, O.J., D., Trussell, G.C., 2010. Predator control of ecosystem nutrient dynamics. Ecol. Lett. 13, 1199-1209.
Shurin, J.R., 2015. TopDown and BottomUp Regulation of Communities. In: Gibson, D. (ed.), Oxford Bibliographies in Ecology. Oxford University Press, NY. DOI: 10.1093/OBO/97801998300600029.
Sinclair, A.R.E., Krebs, C.J., Fryxell, J.M., et al., 2000. Testing hypotheses of trophic level interactions: a boreal forest ecosystem. Oikos. 89, 313-328.
Spehn, A.E.M., Hector, a, Joshi, J., Schmid, B., et al., 2005. Ecosystem Effects of Biodiversity Manipulations in European Grasslands. Ecol. Monogr. 75(1), 37-63.
Strickland, M.S., Hawlena, D., Reese, A., et al., 2013. Trophic cascade alters ecosystem carbon exchange. PNAS, USA. 110, 11035-8. http://doi.org/10.1073/pnas.1305191110.
Tilman, D., 1996. Biodiversity: Population versus ecosystem stability. Ecology. 77, 350-363.
Turkington, R., 2009. Topdown and bottomup forces in mammalian herbivorevegetation systems: an essay review. Botany. 87(8), 723-739. http://doi.org/10.1139/B09035.
Vitousek, P.M., Hooper, D.U., 1993. Biological diversity and terrestrial ecosystem biogeochemistry. In: Schulze, E.D., Mooney, H.A. (ed.), Biodiversity and Ecosystem Function, 3-14. SpringerVerlag, Berlin.
Walker, B., 1992. Biodiversity and ecosystem redundancy. Conserv. Biol. 6, 18-23.
Wang D., Ba, L., 2008. Ecology of meadow steppe in northeast China. Rangeland J. 30(2), 247-254. http://dx.doi.org/10.1071/RJ08005.
Wang, Z., Jiao, S., Han, G., et al., 2014. Effects of stocking rate on the variability of peak standing crop in a desert steppe of Eurasia grassland. Environ. Manage. 53(2), 266-73.
Wang, L., Jia, Y., Zhang, X., et al., 2015. Overview of higher plant diversity in China. Biodivers. Sci. 23, 217-224.
Wardle, D.A., Bardgett, R.D., Callaway, R.M., et al., 2011. Terrestrial ecosystem responses to species gains and losses. Science. 332(6035), 1273-1277. DOI: 10.1126/science.1197479.
White, T.C.R., 1978. The importance of relative shortage of food in animal ecology. Oecologia. 33, 71-86.
Wu, R., Zhang, S., Yu, D.W., et al., 2011. Effectiveness of China′s nature reserves in representing ecological diversity. Front. Ecol. Environ. 9(7), 383-389. http://doi.org/10.1890/100093.
Xu, H.G., Wu, J., Liu, Y., et al., 2008. Biodiversity congruence and conservation strategies: A national test. BioScience. 58, 632-639.
Yang, X.F., Bauhus, J., Both, S., et al., 2013. Establishment success in a forest biodiversity and ecosystem functioning experiment in subtropical China (BEFChina). Eur. J. For. Res. 132, 593-606.
Zhai, P., Zhang, X., Wan, H., et al., 2005. Trends in total precipitation and frequency of daily precipitation extremes over China. J. Climate. 18, 1096-1108.
Zhang, H., Gilbert, B., Wang, W., et al., 2013a. Grazer exclusion alters plant spatial organization at multiple scales, increasing diversity. Ecol. Evol. 3, 3604-3612.
Zhang, H., Gilbert, B., Zhang X., et al., 2013b. Community assembly along a successional gradient in subalpine meadows of the QinghaiTibetan Plateau, China. Oikos. 122, 952-960.
Zhao, M., Gao, X., Wang, J., et al., 2013. A review of the most economically important poisonous plants to the livestock industry on temperate grasslands of China. J. Appl. Toxicol. 33, 9-17. DOI: 10.1002/jat.2789.
Zheng, H., Cao, S., 2014. Threats to China′s biodiversity by contradictions policy. Ambio. 23-33. http://doi.org/10.1007/s1328001405267.
(Editor: Zhekun Zhou)

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