Evaluating the performance of remote sensed rain-use efficiency as an indicator of ecosystem functioning in semi-arid ecosystems

References

• Anderson, L. O., Y. Malhi, L. E. Aragão, R. Ladle, E. Arai, N. Barbier, and O. Phillips. 2010. “Remote Sensing Detection of Droughts in Amazonian Forest Canopies.” New Phytologist 187 (3): 733–750. doi:10.1111/j.1469-8137.2010.03355.x.
   PubMed Web of Science ®Google Scholar
• Berdugo, M., S. Kéfi, S. Soliveres, and F. T. Maestre. 2017. “Plant Spatial Patterns Identify Alternative Ecosystem Multifunctionality States in Global Drylands.” Nature Ecology & Evolution 1: 0003. doi:10.1038/s41559-016-0003.
   PubMed Web of Science ®Google Scholar
• Bowker, M. A., F. T. Maestre, and R. L. Mau. 2013. “Diversity and Patch-Size Distributions of Biological Soil Crusts Regulate Dryland Ecosystem Multifunctionality.” Ecosystems 16 (6): 923–933. doi:10.1007/s10021-013-9644-5.
   Web of Science ®Google Scholar
• Burgheimer, J., B. Wilske, K. Maseyk, A. Karnieli, E. Zaady, D. Yakir, and J. Kesselmeier. 2006. “Relationships between Normalized Difference Vegetation Index (Ndvi) and Carbon Fluxes of Biologic Soil Crusts Assessed by Ground Measurements.” Journal of Arid Environments 64 (4): 651–669. doi:10.1016/j.jaridenv.2005.06.025.
   Web of Science ®Google Scholar
• Cardinale, B. J., K. L. Matulich, D. U. Hooper, J. E. Byrnes, E. Duffy, L. Gamfeldt, P. Balvanera, M. I. O’Connor, and A. Gonzalez. 2011. “The Functional Role of Producer Diversity in Ecosystems.” American Journal of Botany 98 (3): 572–592. doi:10.3732/ajb.1000364.
   PubMed Web of Science ®Google Scholar
• Carlson, T. N., and D. A. Ripley. 1997. “On the Relation between Ndvi, Fractional Vegetation Cover, and Leaf Area Index.” Remote Sensing of Environment 62 (3): 241–252. doi:10.1016/S0034-4257(97)00104-1.
   Web of Science ®Google Scholar
• Chase, T. N., R. Pielke, S. T. Kittel, R. R. Nemani, and S. W. Running. 2000. “Simulated Impacts of Historical Land Cover Changes on Global Climate in Northern Winter.” Climate Dynamics 16 (2–3): 93–105. doi:10.1007/s003820050007.
   Web of Science ®Google Scholar
• Cowie, A., T. Penman, L. Gorissen, M. Winslow, J. Lehmann, T. Tyrrell, S. Twomlow, A. Wilkes, R. Lal, and J. Jones. 2011. “Towards Sustainable Land Management in the Drylands: Scientific Connections in Monitoring and Assessing Dryland Degradation, Climate Change and Biodiversity.” Land Degradation & Development 22 (2): 248–260. doi:10.1002/ldr.1086.
   Web of Science ®Google Scholar
• Dai, A. 2013. “Increasing Drought under Global Warming in Observations and Models.” Nature Climate Change 3 (1): 52–58. doi:10.1038/NCLIMATE1633.
   Web of Science ®Google Scholar
• Dardel, C., L. Kergoat, P. Hiernaux, E. Mougin, M. Grippa, and C. Tucker. 2014b. “Re-Greening Sahel: 30years of Remote Sensing Data and Field Observations (Mali, Niger).” Remote Sensing of Environment 140: 350–364. doi:10.1016/j.rse.2013.09.011.
   Web of Science ®Google Scholar
• Dardel, C., L. Kergoat, P. Hiernaux, M. Grippa, E. Mougin, P. Ciais, and -C.-C. Nguyen. 2014a. “Rain-Use-Efficiency: What It Tells Us about the Conflicting Sahel Greening and Sahelian Paradox.” Remote Sensing 6 (4): 3446–3474. doi:10.3390/rs6043446.
   Web of Science ®Google Scholar
• Delgado-Baquerizo, M., F. T. Maestre, A. Gallardo, M. A. Bowker, M. D. Wallenstein, J. L. Quero, V. Ochoa, B. Gozalo, M. García-Gómez, and S. Soliveres. 2013. “Decoupling of Soil Nutrient Cycles as a Function of Aridity in Global Drylands.” Nature 502 (7473): 672. doi:10.1038/nature12670.
   PubMed Web of Science ®Google Scholar
• Delgado‐Baquerizo, M., F. T. Maestre, D. J. Eldridge, M. A. Bowker, V. Ochoa, B. Gozalo, M. Berdugo, J. Val, and B. K. Singh. 2016. “Biocrust‐Forming Mosses Mitigate the Negative Impacts of Increasing Aridity on Ecosystem Multifunctionality in Drylands.” New Phytologist 209 (4): 1540–1552. doi:10.1111/nph.13688.
   PubMed Web of Science ®Google Scholar
• Dubovyk, O., T. Landmann, B. F. Erasmus, A. Tewes, and J. Schellberg. 2015. “Monitoring Vegetation Dynamics with Medium Resolution MODIS-EVI Time Series at Sub-Regional Scale in Southern Africa.” International Journal of Applied Earth Observation and Geoinformation 38: 175–183. doi:10.1016/j.jag.2015.01.002.
   Web of Science ®Google Scholar
• Fensholt, R., I. Sandholt, M. S. Rasmussen, S. Stisen, and A. Diouf. 2006. “Evaluation of Satellite Based Primary Production Modelling in the Semi-Arid Sahel.” Remote Sensing of Environment 105 (3): 173–188. doi:10.1016/j.rse.2006.06.011.
   Web of Science ®Google Scholar
• Fensholt, R., and K. Rasmussen. 2011. “Analysis of Trends in the Sahelian ‘Rain-Use Efficiency’using Gimms Ndvi, Rfe and Gpcp Rainfall Data.” Remote Sensing of Environment 115 (2): 438–451. doi:10.1016/j.rse.2010.09.014.
   Web of Science ®Google Scholar
• Fensholt, R., K. Rasmussen, P. Kaspersen, S. Huber, S. Horion, and E. Swinnen. 2013. “Assessing Land Degradation/Recovery in the African Sahel from Long-Term Earth Observation Based Primary Productivity and Precipitation Relationships.” Remote Sensing 5 (2): 664–686. doi:10.3390/rs5020664.
   Web of Science ®Google Scholar
• Fernández, R. J., E. R. M. Archer, A. J. Ash, H. Dowlatabadi, P. H. Hiernaux, J. F. Reynolds, C. H. Vogel, B. H. Walter, and T. Wiegand. 2002. “Degradation and Recovery in Socio-Ecological Systems: A View from the Household/Farm Level.” In Global Desertification: Do Humans Cause Deserts?, edited by J. F. Reynolds and D. M. Stafford Smith, 297–323. Berlin: Dahlem University Press.
   Google Scholar
• Gaitán, J. J., D. Bran, G. Oliva, G. Ciari, V. Nakamatsu, J. Salomone, D. Ferrante, G. Buono, V. Massara, and G. Humano. 2013. “Evaluating the Performance of Multiple Remote Sensing Indices to Predict the Spatial Variability of Ecosystem Structure and Functioning in Patagonian Steppes.” Ecological Indicators 34: 181–191. doi:10.1016/j.ecolind.2013.05.007.
   Web of Science ®Google Scholar
• Gaitan, J. J., G. E. Oliva, D. E. Bran, F. T. Maestre, M. R. Aguiar, E. G. Jobbagy, G. G. Buono, D. Ferrante, V. B. Nakamatsu, and G. Ciari. 2014. “Vegetation Structure Is as Important as Climate for Explaining Ecosystem Function across Patagonian Rangelands.” Journal of Ecology 102 (6): 1419–1428. doi:10.1111/1365-2745.12273.
   Web of Science ®Google Scholar
• García-Gómez, M., and F. T. Maestre. 2011. “Remote Sensing Data Predict Indicators of Soil Functioning in Semi-Arid Steppes, Central Spain.” Ecological Indicators 11 (5): 1476–1481. doi:10.1016/j.ecolind.2011.02.015.
   Web of Science ®Google Scholar
• Google Earth. 2014. Google Earth v. 7.1.2.2041. Mountain View, CA: Google. Accessed October 4 2014. http://www.google.com/earth
   Google Scholar
• Herrick, J. E., J. W. Van Zee, K. M. Havstad, L. M. Burkett, and W. G. Whitford. 2005. Monitoring Manual for Grassland, Shrubland and Savanna Ecosystems. Volume I: Quick Start. Volume II: Design, Supplementary Methods and Interpretation. Las Cruces: USDA-ARS.
   Google Scholar
• Hijmans, R. J., S. E. Cameron, J. L. Parra, P. G. Jones, and A. Jarvis. 2005. “Very High Resolution Interpolated Climate Surfaces for Global Land Areas.” International Journal of Climatology 25 (15): 1965–1978. doi:10.1002/joc.1276.
   Web of Science ®Google Scholar
• Hirota, M., M. Holmgren, E. H. Van Nes, and M. Scheffer. 2011. “Global Resilience of Tropical Forest and Savanna to Critical Transitions.” Science 334 (6053): 232–235. doi:10.1126/science.1210657.
   PubMed Web of Science ®Google Scholar
• Huete, A., C. Justice, and W. Van Leeuwen. 1999. “MODIS Vegetation Index (MOD13) Algorithm Theoretical Basis Document Version 3.” https://modis.gsfc.nasa.gov/data/atbd/atbd_mod13.pdf
   Google Scholar
• Huete, A., and R. Jackson. 1988. “Soil and Atmosphere Influences on the Spectra of Partial Canopies.” Remote Sensing of Environment 25 (1): 89–105. doi:10.1016/0034-4257(88)90043-0.
   Web of Science ®Google Scholar
• Huxman, T. E., M. D. Smith, P. A. Fay, and A. K. Knapp. 2004. “Convergence across Biomes to a Common Rain-Use Efficiency.” Nature 429 (6992): 651. doi:10.1038/nature02561.
   PubMed Web of Science ®Google Scholar
• Isbell, F., V. Calcagno, A. Hector, J. Connolly, W. S. Harpole, P. B. Reich, M. Scherer-Lorenzen, B. Schmid, D. Tilman, and J. van Ruijven. 2011. “High Plant Diversity Is Needed to Maintain Ecosystem Services.” Nature 477 (7363): 199. doi:10.1038/nature10282.
   PubMed Web of Science ®Google Scholar
• Ji, L., and A. J. Peters. 2005. “Lag and Seasonality Considerations in Evaluating AVHRR NDVI Response to Precipitation.” Photogrammetric Engineering & Remote Sensing 71 (9): 1053–1061. doi:10.14358/PERS.71.9.1053.
   Web of Science ®Google Scholar
• Justice, C., G. Dugdale, J. Townshend, A. Narracott, and M. Kumar. 1991. “Synergism between Noaa-Avhrr and Meteosat Data for Studying Vegetation Development in Semi-Arid West Africa.” International Journal of Remote Sensing 12 (6): 1349–1368. doi:10.1080/01431169108929730.
   Web of Science ®Google Scholar
• Kéfi, S., M. Rietkerk, C. L. Alados, Y. Pueyo, V. P. Papanastasis, A. ElAich, and P. C. De Ruiter. 2007. “Spatial Vegetation Patterns and Imminent Desertification in Mediterranean Arid Ecosystems.” Nature 449 (7159): 213. doi:10.1038/nature06111.
   PubMed Web of Science ®Google Scholar
• Kéfi, S., V. Guttal, W. A. Brock, S. R. Carpenter, A. M. Ellison, V. N. Livina, D. A. Seekell, M. Scheffer, E. H. Van Nes, and V. Dakos. 2014. “Early Warning Signals of Ecological Transitions: Methods for Spatial Patterns.” PloS One 9 (3): e92097. doi:10.1371/journal.pone.0092097.
   PubMed Web of Science ®Google Scholar
• Le Houérou, H. N. 1984. “Rain Use Efficiency: A Unifying Concept in Arid-Land Ecology.” Journal of Arid Environment 7: 213–247.
   Web of Science ®Google Scholar
• Liu, H. Q., and A. Huete. 1995. “A Feedback Based Modification of the Ndvi to Minimize Canopy Background and Atmospheric Noise.” IEEE Transactions on Geoscience and Remote Sensing 33 (2): 457–465. doi:10.1109/36.377946.
   Web of Science ®Google Scholar
• Maestre, F. T., and A. Escudero. 2009. “Is the Patch Size Distribution of Vegetation a Suitable Indicator of Desertification Processes?” Ecology 90 (7): 1729–1735. doi:10.1890/08-2096.1.
   PubMed Web of Science ®Google Scholar
• Maestre, F. T., D. J. Eldridge, S. Soliveres, S. Kéfi, M. Delgado-Baquerizo, M. A. Bowker, P. García-Palacios, J. Gaitán, A. Gallardo, and R. Lázaro. 2016. “Structure and Functioning of Dryland Ecosystems in a Changing World.” Annual Review of Ecology, Evolution, and Systematics 47: 215–237. doi:10.1146/annurev-ecolsys-121415-032311.
   PubMed Web of Science ®Google Scholar
• Maestre, F. T., J. L. Quero, N. J. Gotelli, A. Escudero, V. Ochoa, M. Delgado-Baquerizo, M. García-Gómez, M. A. Bowker, S. Soliveres, and C. Escolar. 2012. “Plant Species Richness and Ecosystem Multifunctionality in Global Drylands.” Science 335 (6065): 214–218. doi:10.1126/science.1215442.
   PubMed Web of Science ®Google Scholar
• Matsushita, B., W. Yang, J. Chen, Y. Onda, and G. Qiu. 2007. “Sensitivity of the Enhanced Vegetation Index (EVI) and Normalized Difference Vegetation Index (NDVI) to Topographic Effects: A Case Study in High-Density Cypress Forest.” Sensors 7 (11): 2636–2651. doi:10.3390/s7112636.
   PubMed Web of Science ®Google Scholar
• McNaughton, S. J., M. Oesterheld, D. A. Frank, and K. Williams. 1989. “Ecosystem-Level Patterns of Primary Productivity and Herbivory in Terrestrial Habitats.” Nature 341 (6238): 142–144. doi:10.1038/341142a0.
   PubMed Web of Science ®Google Scholar
• Microsoft Research. 2017. FetchClimate. Cambridge, UK: Computational Science Laboratory, Microsoft Research. https://www.microsoft.com/en-us/research/project/fetchclimate/.
   Google Scholar
• Millennium Ecosystem Assessment. 2005. Ecosystems and Human Well-Being: Desertification Synthesis. Washington, DC: World Resources Institute.
   Google Scholar
• MODIS Land Subsets. 2010. MODIS Global Subsets: Data Subsetting and Visualization. Oak Ridge National Laboratory DAAC. http://daac.ornl.gov/cgibin/MODIS/GLBVIZ1Glb/modissubsetorderglobalcol5.pl.
   Google Scholar
• National Aeronautics and Space Administration Land Processes Distributed Active Archive Center (NASA LP DAAC). 2017. MODIS/Terra Vegetation Indices 16-Day L3 Global 250m SIN Grid V005 (MCD13Q1). Sioux Falls, South Dakota: USGS Earth Resources Observation and Science (EROS) Center. https://lpdaac.usgs.gov/dataset_discovery/modis/modis_products_table/mod13q1.
   Google Scholar
• Nicholson, S. E., C. J. Tucker, and M. Ba. 1998. “Desertification, Drought, and Surface Vegetation: An Example from the West African Sahel.” Bulletin of the American Meteorological Society 79 (5): 815–829. doi:10.1175/1520-0477(1998)079.
   Web of Science ®Google Scholar
• Ong, C., D. Tongway, M. Caccetta, and N. Hindley, 2009. Phase 1: Deriving Ecosystem Function Analysis Indices from Airborne Hyperspectral Data. CSIRO Exploration & Mining. ( Unpublished report).
   Google Scholar
• Paredes, P. 2011. “Caracterización Funcional De La Estepa Magallánica Y Su Transición a Matorral De Mata Negra (Patagonia Austral) a Partir De Imágenes De Resolución Espacial Intermedia.” PhD diss., Universidad de Buenos Aires, Argentina.
   Google Scholar
• Paruelo, J. M., M. F. Garbulsky, J. P. Guerschman, and E. G. Jobbágy. 2004. “Two Decades of Normalized Difference Vegetation Index Changes in South America: Identifying the Imprint of Global Change.” International Journal of Remote Sensing 25 (14): 2793–2806. doi:10.1080/01431160310001619526.
   Web of Science ®Google Scholar
• Paruelo, J. M., W. K. Lauenroth, I. C. Burke, and O. E. Sala. 1999. “Grassland Precipitation-Use Efficiency Varies across a Resource Gradient.” Ecosystems 2 (1): 64–68. doi:10.1007/s100219900058.
   Web of Science ®Google Scholar
• Prince, S. D., D. Colstoun, E. Brown, and L. Kravitz. 1998. “Evidence from Rain-Use Efficiencies Does Not Indicate Extensive Sahelian Desertification.” Global Change Biology 4 (4): 359–374. doi:10.1046/j.1365-2486.1998.00158.x.
   Web of Science ®Google Scholar
• Pyke, D. A., J. E. Herrick, P. Shaver, and M. Pellant. 2002. “Rangeland Health Attributes and Indicators for Qualitative Assessment.” Journal of Range Management 55: 584–597. doi:10.2307/4004002.
   Google Scholar
• Reiss, J., J. R. Bridle, J. M. Montoya, and G. Woodward. 2009. “Emerging Horizons in Biodiversity and Ecosystem Functioning Research.” Trends in Ecology & Evolution 24 (9): 505–514. doi:10.1016/j.tree.2009.03.018.
   PubMed Web of Science ®Google Scholar
• Reynolds, J. F., D. M. S. Smith, E. F. Lambin, B. Turner, M. Mortimore, S. P. Batterbury, T. E. Downing, H. Dowlatabadi, R. J. Fernández, and J. E. Herrick. 2007a. “Global Desertification: Building a Science for Dryland Development.” Science 316 (5826): 847–851. doi:10.1126/science.1131634.
   PubMed Web of Science ®Google Scholar
• Reynolds, J. F., F. T. Maestre, P. R. Kemp, D. M. Stafford-Smith, and E. Lambin. 2007b. Natural and Human Dimensions of Land Degradation incDrylands: Causes and Consequences. Terrestrial Ecosystems in a Changing World. Berlin: Springer-Verlag.
   Google Scholar
• Rietkerk, M., S. C. Dekker, P. C. de Ruiter, and J. van de Koppel. 2004. “Self-Organized Patchiness and Catastrophic Shifts in Ecosystems.” Science 305 (5692): 1926–1929. doi:10.1126/science.1101867.
   PubMed Web of Science ®Google Scholar
• Running, S. W., R. R. Nemani, F. A. Heinsch, M. Zhao, M. Reeves, and H. Hashimoto. 2004. “A Continuous Satellite-Derived Measure of Global Terrestrial Primary Production.” AIBS Bulletin 54 (6): 547–560. doi:10.1641/0006-3568(2004)054.
   Google Scholar
• Sabbe, H., and F. Veroustrate. 2000. Demonstration of a Standard Net Primary Productivity Product for the SPOT 4-Vegetation Instrument. Mol, Belgium: VITO.
   Google Scholar
• Scheffer, M., J. Bascompte, W. A. Brock, V. Brovkin, S. R. Carpenter, V. Dakos, H. Held, E. H. Van Nes, M. Rietkerk, and G. Sugihara. 2009. “Early-Warning Signals for Critical Transitions.” Nature 461 (7260): 53. doi:10.1038/nature08227.
   PubMed Web of Science ®Google Scholar
• Scheffer, M., M. Hirota, M. Holmgren, E. H. Van Nes, and F. S. Chapin. 2012b. “Thresholds for Boreal Biome Transitions.” Proceedings of the National Academy of Sciences 109 (52): 21384–21389. doi:10.1073/pnas.1219844110.
   PubMed Web of Science ®Google Scholar
• Scheffer, M., S. Carpenter, J. A. Foley, C. Folke, and B. Walker. 2001. “Catastrophic Shifts in Ecosystems.” Nature 413 (6856): 591. doi:10.1038/35098000.
   PubMed Web of Science ®Google Scholar
• Scheffer, M., S. R. Carpenter, T. M. Lenton, J. Bascompte, W. Brock, V. Dakos, J. van de Koppel, I. A. Van de Leemput, S. A. Levin, and E. H. Van Nes. 2012a. “Anticipating Critical Transitions.” Science 338 (6105): 344–348. doi:10.1126/science.1225244.
   PubMed Web of Science ®Google Scholar
• Schimel, D. S. 2010. “Drylands in the Earth System.” Science 327 (5964): 418–419. doi:10.1126/science.1184946.
   PubMed Web of Science ®Google Scholar
• Seddon, A., M. Macias-Fauria, P. R. Long, D. Benz, and K. J. Willis. 2016. “Sensitivity of Global Terrestrial Ecosystems to Climate Variability.” Nature 531 (7593): 229–232. doi:10.1038/nature16986.
   PubMed Web of Science ®Google Scholar
• Tongway, D. J., and N. Hindley. 2004. Landscape Function Analysis: Procedures for Monitoring and Assessing Landscapes with Special Reference to Minesites and Rangelands. Canberra, ACT, Australia: Sustainable Ecosystems, Commonwealth Scientific and Industrial Research Organisation.
   Google Scholar
• Trabucco, A., and R. J. Zomer. 2009. “Global Aridity Index (Global-Aridity) and Global Potential Evapo-Transpiration (Global-Pet) Geospatial Database.” CGIAR Consortium for Spatial Information. http://www.csi.cgiar.org
   Google Scholar
• UNEP. 1992. World Atlas of Desertification. Edited by N. Middleton and D. S. G. Thomas. London, UK: Edward Arnold Press.
   Google Scholar
• Valentin, C., J. M. d’Herbès, and J. Poesen. 1999. “Soil and Water Components of Banded Vegetation Patterns.” Catena 37 (1): 1–24. doi:10.1016/S0341-8162(99)00053-3.
   Web of Science ®Google Scholar
• Von Hardenberg, J., E. Meron, M. Shachak, and Y. Zarmi. 2001. “Diversity of Vegetation Patterns and Desertification.” Physical Review Letters 87 (19): 198101. doi:10.1103/PhysRevLett.87.198101.
   PubMed Web of Science ®Google Scholar
• Wessels, K. J., S. Prince, J. Malherbe, J. Small, P. Frost, and D. VanZyl. 2007. “Can Human-Induced Land Degradation Be Distinguished from the Effects of Rainfall Variability? A Case Study in South Africa.” Journal of Arid Environments 68 (2): 271–297. doi:10.1016/j.jaridenv.2006.05.015.
   Web of Science ®Google Scholar
• Wessels, K. J., S. Prince, N. Zambatis, S. MacFadyen, P. Frost, and D. Van Zyl. 2006. “Relationship between Herbaceous Biomass and 1-Km2 Advanced Very High Resolution Radiometer (AVHRR) NDVI in Kruger National Park, South Africa.” International Journal of Remote Sensing 27 (5): 951–973. doi:10.1080/01431160500169098.
   Web of Science ®Google Scholar
• Williams, C. A., N. P. Hanan, I. Baker, G. J. Collatz, J. Berry, and A. S. Denning. 2008. “Interannual Variability of Photosynthesis across Africa and its Attribution.” Journal of Geophysical Research: Biogeosciences 113: G04015. doi: 10.1029/2008JG000718.
   Web of Science ®Google Scholar
• Wu, D., X. Zhao, S. Liang, T. Zhou, K. Huang, B. Tang, and W. Zhao. 2015. “Time-Lag Effects of Global Vegetation Responses to Climate Change.” Global Change Biology 21 (9): 3520–3531. doi:10.1080/01431161.2015.1093196.
   PubMed Web of Science ®Google Scholar
• Xu, C., M. Holmgren, E. H. Van Nes, M. Hirota, F. S. Chapin III, and M. Scheffer. 2015. “A Changing Number of Alternative States in the Boreal Biome: Reproducibility Risks of Replacing Remote Sensing Products.” PloS One 10 (11): e0143014. doi:10.1371/journal.pone.0143014.
   PubMed Web of Science ®Google Scholar
• Xu, C., S. Hantson, M. Holmgren, E. H. Nes, A. Staal, and M. Scheffer. 2016. “Remotely Sensed Canopy Height Reveals Three Pantropical Ecosystem States.” Ecology 97 (9): 2518–2521. doi:10.1002/ecy.1470.
   PubMed Web of Science ®Google Scholar
• Zavaleta, E. S., J. R. Pasari, K. B. Hulvey, and G. D. Tilman. 2010. “Sustaining Multiple Ecosystem Functions in Grassland Communities Requires Higher Biodiversity.” Proceedings of the National Academy of Sciences 107 (4): 1443–1446. doi:10.1073/pnas.0906829107.
   PubMed Web of Science ®Google Scholar