Nitrogen deposition changes the distribution of key plant species in the meadow steppe in Hulunbeier, China
Wang Xuan A , Wang Xin Ting B , Liang Cun Zhu A D and Niu Yong Mei C
+ Author Affiliations
- Author Affiliations
A Inner Mongolia University, School of Ecology and Environment, Hohhot, Inner Mongolia, China.
B Inner Mongolia University of Technology, School of Energy and Power Engineering, Hohhot, Inner Mongolia, China.
C Hohhot Meteorological Bureau, Hohhot Meteorological Observatory, Hohhot, Inner Mongolia, China.
D Corresponding author. Email: bilcz@imu.edu.cn
The Rangeland Journal 40(2) 129-142 https://doi.org/10.1071/RJ16075
Submitted: 5 August 2016 Accepted: 10 January 2018 Published: 19 March 2018
Abstract
Improved understanding of how nutrient levels affect the distribution of plants can provide important insights into the potential impacts of increasing global nitrogen (N) deposition. We used point pattern analyses to examine the impact of nutrient addition on heterogeneity in the spatial distribution of the three main plant species of the meadow steppe community of Hulunbeier, Inner Mongolia: Leymus chinensis (Trin.) Tzvel (aka Aneurotepidimu chinense), a rhizamotous grass; Stipa baicalensis Rasher, a bunch grass; and Artemisia tanacetifolia Linn, a rhizamotous forb. The six treatments tested added nitrogen N in three different concentrations, N with phosphorus (P), P alone and a Control. Although the three plant species were randomly distributed at the start of the experiment in 2011, the spatial distribution of some species in some treatments had changed at the end of 3 years of nutrient addition. There was a significant increase in aggregation of L. chinensis at fine scales of analysis from application of N and P in tandem. However, S. baicalensis and A. tanacetifolia distributions remained random under all treatments. Positive associations of L. chinensis with S. baicalensis and with A. tanacetifolia were apparent at the lowest concentration of added N, 2.5 g N m–2 year–1, which represented an approximate doubling of global N deposition. These associations, which represent clustering among individuals of these species were also apparent where only P was applied. Negative associations, representing dispersion, were prevalent with higher N concentrations. The results indicate that increases in global N deposition up to about double current levels may have a positive influence on meadow steppe communities by increasing the niche overlap of different species. However, increases beyond that level may trigger substantial ecological change through increased competition for other, more limited, environmental resources, and disassociation between plants of the different dominant species. Our findings suggest that studies of the spatial patterning of plant communities can contribute to understanding the potential impacts of climate change.
References
Aerts, R., and Chapin, F. S. (2000). The mineral nutrition of wild plants revisited: a re-evaluation of processes and patterns. Advances in Ecological Research 30, 1–67.| 1:CAS:528:DC%2BD3cXivVejurw%3D&md5=74fcf9d6420c8f87c84c35d56394df30CAS |
Bai, Y., Wu, J., Clark, C. M., Naeem, S., Pan, Q., Huang, J., Zhang, L., and Han, X. (2010). Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from Inner Mongolia Grasslands. Global Change Biology 16, 358–372.
| Tradeoffs and thresholds in the effects of nitrogen addition on biodiversity and ecosystem functioning: evidence from Inner Mongolia Grasslands.Crossref | GoogleScholarGoogle Scholar |
Bailey, T. C., and Gatrell, A. C. (1995). ‘Interactive Spatial Data Analysis.’ (John Wiley & Sons: New York.)
Bauhus, J., and Khanna, P. K. (1994). Carbon and nitrogen turnover in two acid forest soils of southeast Australia as affected by phosphorus addition and drying and rewetting cycles. Biology and Fertility of Soils 17, 212–218.
| Carbon and nitrogen turnover in two acid forest soils of southeast Australia as affected by phosphorus addition and drying and rewetting cycles.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK2cXltVOgt7g%3D&md5=d749b3bd4372e5915e454cf824730953CAS |
Bobbink, R., and Willems, J. (1991). Impact of different cutting regimes on the performance of Brachypodium pinnatum in Dutch chalk grassland. Biological Conservation 56, 1–21.
| Impact of different cutting regimes on the performance of Brachypodium pinnatum in Dutch chalk grassland.Crossref | GoogleScholarGoogle Scholar |
Chapin, F. S. (1980). The mineral nutrition of wild plants. Annual Review of Ecology and Systematics 11, 233–260.
| The mineral nutrition of wild plants.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaL3MXivFagug%3D%3D&md5=5162c471bf053b8fce7be5648aff6593CAS |
Clark, C. M., and Tilman, D. (2008). Loss of plant species after chronic low-level nitrogen deposition to prairie grasslands. Nature 451, 712–715.
| Loss of plant species after chronic low-level nitrogen deposition to prairie grasslands.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhs1KnsL8%3D&md5=63accdd2e1ad68adb62811a748efb208CAS |
Clark, C. M., Cleland, E. E., Collins, S. L., Fargione, J. E., Gough, L., Gross, K. L., Pennings, S. C., Suding, K. N., and Grace, J. B. (2007). Environmental and plant community determinants of species loss following nitrogen enrichment. Ecology Letters 10, 596–607.
| Environmental and plant community determinants of species loss following nitrogen enrichment.Crossref | GoogleScholarGoogle Scholar |
Coleman, B. D., Mares, M. A., Willig, M. R., and Hsieh, Y. H. (1982). Randomness, area, and species richness. Ecology 63, 1121–1133.
| Randomness, area, and species richness.Crossref | GoogleScholarGoogle Scholar |
Dale, M. R. T., and MacIsaac, D. A. (1989). New methods for the analysis of spatial pattern in vegetation. Journal of Ecology 77, 78–91.
| New methods for the analysis of spatial pattern in vegetation.Crossref | GoogleScholarGoogle Scholar |
Damgaard, C., Jensen, L., Frohn, L. M., Borchsenius, F., Nielsen, K. E., Ejrnæs, R., and Stevens, C. J. (2011). The effect of nitrogen deposition on the species richness of acid grasslands in Denmark: a comparison with a study performed on a European scale. Environmental Pollution 159, 1778–1782.
| The effect of nitrogen deposition on the species richness of acid grasslands in Denmark: a comparison with a study performed on a European scale.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXmsVajur8%3D&md5=737c1c0a8a85eb2d084100c9758bcdf2CAS |
Das, A., Battles, J., Van Mantgem, P. J., and Stephenson, N. L. (2008). Spatial elements of mortality risk in old-growth forest. Ecology 89, 1744–1756.
| Spatial elements of mortality risk in old-growth forest.Crossref | GoogleScholarGoogle Scholar |
De Kroon, H., and Groenendael, J. V. (1997). ‘The Ecology and Evolution of Clonal Plants.’ (Backhuys Publishers: Leiden.)
Dong, S., Wang, X., Liu, S., Li, Y., Su, X., Wen, L., and Zhu, L. (2015). Reproductive responses of alpine plants to grassland degradation and artificial restoration in the Qinghai–Tibetan Plateau. Grass and Forage Science 70, 229–238.
| Reproductive responses of alpine plants to grassland degradation and artificial restoration in the Qinghai–Tibetan Plateau.Crossref | GoogleScholarGoogle Scholar |
Duffy, J. E., Cardinale, B. J., France, K. E., McIntyre, P. B., Thébault, E., and Loreau, M. (2007). The functional role of biodiversity in ecosystems: incorporating trophic complexity. Ecology Letters 10, 522–538.
| The functional role of biodiversity in ecosystems: incorporating trophic complexity.Crossref | GoogleScholarGoogle Scholar |
Duprè, C., Stevens, C. J., Ranke, T., Bleeker, A., Peppler-Lisbach, C., Gowing, D. J., Dise, N. B., Dorland, E., Bobbink, R., and Diekmann, M. (2010). Changes in species richness and composition in European acidic grasslands over the past 70 years: the contribution of cumulative atmospheric nitrogen deposition. Global Change Biology 16, 344–357.
| Changes in species richness and composition in European acidic grasslands over the past 70 years: the contribution of cumulative atmospheric nitrogen deposition.Crossref | GoogleScholarGoogle Scholar |
Elser, J. J., Bracken, M. E., Cleland, E. E., Gruner, D. S., Harpole, W. S., Hillebrand, H., Ngai, J. T., Seabloom, E. W., Shurin, J. B., and Smith, J. E. (2007). Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems. Ecology Letters 10, 1135–1142.
| Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems.Crossref | GoogleScholarGoogle Scholar |
Fischer, J., and Lindenmayer, D. B. (2007). Landscape modification and habitat fragmentation: a synthesis. Global Ecology and Biogeography 16, 265–280.
| Landscape modification and habitat fragmentation: a synthesis.Crossref | GoogleScholarGoogle Scholar |
Getzin, S., Wiegand, T., Wiegand, K., and He, F. (2008). Heterogeneity influences spatial patterns and demographics in forest stands. Journal of Ecology 96, 807–820.
| Heterogeneity influences spatial patterns and demographics in forest stands.Crossref | GoogleScholarGoogle Scholar |
Graff, P., and Aguiar, M. R. (2011). Testing the role of biotic stress in the stress gradient hypothesis. Processes and patterns in arid rangelands. Oikos 120, 1023–1030.
| Testing the role of biotic stress in the stress gradient hypothesis. Processes and patterns in arid rangelands.Crossref | GoogleScholarGoogle Scholar |
Gustafson, E. J. (1998). Quantifying landscape spatial pattern: What is the state of the art? Ecosystems 1, 143–156.
| Quantifying landscape spatial pattern: What is the state of the art?Crossref | GoogleScholarGoogle Scholar |
Hartnett, D., and Bazzaz, F. (1985). The integration of neighbourhood effects by clonal genets in Solidago canadensis. Journal of Ecology 73, 415–427.
| The integration of neighbourhood effects by clonal genets in Solidago canadensis.Crossref | GoogleScholarGoogle Scholar |
Hautier, Y., Niklaus, P. A., and Hector, A. (2009). Competition for light causes plant biodiversity loss after eutrophication. Science 324, 636–638.
| Competition for light causes plant biodiversity loss after eutrophication.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXltFCisrc%3D&md5=fedded4a1e253830d33fecfac12aa775CAS |
Heckathorn, S., and Delucia, E. (1996). Retranslocation of shoot nitrogen to rhizomes and roots in prairie grasses may limit loss of N to grazing and fire during drought. Functional Ecology 10, 396–400.
| Retranslocation of shoot nitrogen to rhizomes and roots in prairie grasses may limit loss of N to grazing and fire during drought.Crossref | GoogleScholarGoogle Scholar |
Hicks, W. K., Haeuber, R., and Sutton, M. A. (2014). Nitrogen deposition, critical loads and biodiversity: Introduction. In: ‘Nitrogen Deposition, Critical Loads and Biodiversity’. (Eds M. A. Sutton, K. E. Mason, L. J. Sheppard, H. Sverdrup, R. Haeuber and W. K. Hicks.) pp. 1–4. (Springer: Dordrecht, The Netherlands.)
Hodge, A., Robinson, D., Griffiths, B., and Fitter, A. (1999). Why plants bother: root proliferation results in increased nitrogen capture from an organic patch when two grasses compete. Plant, Cell & Environment 22, 811–820.
| Why plants bother: root proliferation results in increased nitrogen capture from an organic patch when two grasses compete.Crossref | GoogleScholarGoogle Scholar |
Horswill, P., O’Sullivan, O., Phoenix, G. K., Lee, J. A., and Leake, J. R. (2008). Base cation depletion, eutrophication and acidification of species-rich grasslands in response to long-term simulated nitrogen deposition. Environmental Pollution 155, 336–349.
| Base cation depletion, eutrophication and acidification of species-rich grasslands in response to long-term simulated nitrogen deposition.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXpslSitbo%3D&md5=3835e935a0f3f2e78b6bafbc2f3ec0fbCAS |
Huang, J., Yuan, Z., and Li, L. (2009). Changes in [N],[P] and specific leaf area of green leaves of Leymus chinensis along nitrogen, phosphorus and water gradients. Journal of Plant Ecology 33, 442–448.
| 1:CAS:528:DC%2BC3cXnt12mtw%3D%3D&md5=7669d31e57963bbc85578b1471c039d5CAS |
Jones, A. G., and Power, S. A. (2012). Field-scale evaluation of effects of nitrogen deposition on the functioning of heathland ecosystems. Journal of Ecology 100, 331–342.
| Field-scale evaluation of effects of nitrogen deposition on the functioning of heathland ecosystems.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38Xlt1Gktr8%3D&md5=c4e88ab2300a22a863da583b068cf010CAS |
Kenkel, N. C. (1988a). Pattern of self-thinning in Jack Pine: Testing the random mortality hypothesis. Ecology 69, 1017–1024.
| Pattern of self-thinning in Jack Pine: Testing the random mortality hypothesis.Crossref | GoogleScholarGoogle Scholar |
Kenkel, N. C. (1988b). Spectral analysis of hummock-hollow pattern in a weakly minerotrophic mire. Plant Ecology 78, 45–52.
| Spectral analysis of hummock-hollow pattern in a weakly minerotrophic mire.Crossref | GoogleScholarGoogle Scholar |
Kershaw, K. A. (1964). ‘Quantitative and Dynamic Ecology.’ (Edward Arnold: London, UK.)
Koerselman, W., and Meuleman, A. F. M. (1996). The vegetation N:P ratio: a new tool to detect the nature of nutrient limitation. Journal of Applied Ecology 33, 1441–1450.
| The vegetation N:P ratio: a new tool to detect the nature of nutrient limitation.Crossref | GoogleScholarGoogle Scholar |
Levin, S. A. (1992). The problem of pattern and scale in ecology. Ecology 73, 1943–1967.
| The problem of pattern and scale in ecology.Crossref | GoogleScholarGoogle Scholar |
Liu, Z., Fu, B., Zheng, X., and Liu, G. (2010). Plant biomass, soil water content and soil N:P ratio regulating soil microbial functional diversity in a temperate steppe: A regional scale study. Soil Biology & Biochemistry 42, 445–450.
| Plant biomass, soil water content and soil N:P ratio regulating soil microbial functional diversity in a temperate steppe: A regional scale study.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhtVaqt7s%3D&md5=5f5b3dc75c50a0f40c2bc8beb8745ed0CAS |
Liu, X., Duan, L., Mo, J., Du, E., Shen, J., Lu, X., Zhang, Y., Zhou, X., He, C., and Zhang, F. (2011). Nitrogen deposition and its ecological impact in China: an overview. Environmental Pollution 159, 2251–2264.
| Nitrogen deposition and its ecological impact in China: an overview.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXhtFeht7jL&md5=67317431ce25febff1f7c549b30a3387CAS |
Liu, X., Zhang, Y., Han, W., Tang, A., Shen, J., Cui, Z., Vitousek, P., Erisman, J. W., Goulding, K., Christie, P., Fangmeier, A., and Zhang, F. (2013). Enhanced nitrogen deposition over China. Nature 494, 459–462.
| Enhanced nitrogen deposition over China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3sXjtFSktrc%3D&md5=f4a67e458b840fbf28f40c6551e1928bCAS |
Lu, C., Tian, H., Liu, M., Ren, W., Xu, X., Chen, G., and Zhang, C. (2012). Effect of nitrogen deposition on China’s terrestrial carbon uptake in the context of multifactor environmental changes. Ecological Applications 22, 53–75.
| Effect of nitrogen deposition on China’s terrestrial carbon uptake in the context of multifactor environmental changes.Crossref | GoogleScholarGoogle Scholar |
Maaroufi, N. I., Nordin, A., Hasselquist, N. J., Bach, L. H., Palmqvist, K., and Gundale, M. J. (2015). Anthropogenic nitrogen deposition enhances carbon sequestration in boreal soils. Global Change Biology 21, 3169–3180.
| Anthropogenic nitrogen deposition enhances carbon sequestration in boreal soils.Crossref | GoogleScholarGoogle Scholar |
Miriti, N. M. (2007). Twenty years of changes in spatial association and community structure among desert perennials. Ecology 88, 1177–1190.
| Twenty years of changes in spatial association and community structure among desert perennials.Crossref | GoogleScholarGoogle Scholar |
Payne, R. J., Dise, N. B., Stevens, C. J., Gowing, D. J., and Partners, B. (2013). Impact of nitrogen deposition at the species level. Proceedings of the National Academy of Sciences of the United States of America 110, 984–987.
| Impact of nitrogen deposition at the species level.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3sXhs1yhtr0%3D&md5=78ac13fc6349f1c18e58db2f4194761eCAS |
Peltzer, D. A. (2002). Does clonal integration improve competitive ability? A test using aspen (Populus tremuloides [Salicaceae]) invasion into prairie. American Journal of Botany 89, 494–499.
| Does clonal integration improve competitive ability? A test using aspen (Populus tremuloides [Salicaceae]) invasion into prairie.Crossref | GoogleScholarGoogle Scholar |
Phoenix, G. K., Booth, R. E., Leake, J. R., Read, D. J., Grime, J. P., and Lee, J. A. (2003). Effects of enhanced nitrogen deposition and phosphorus limitation on nitrogen budgets of semi-natural grasslands. Global Change Biology 9, 1309–1321.
| Effects of enhanced nitrogen deposition and phosphorus limitation on nitrogen budgets of semi-natural grasslands.Crossref | GoogleScholarGoogle Scholar |
Phoenix, G. K., Emmett, B. A., Britton, A. J., Caporn, S. J., Dise, N. B., Helliwell, R., Jones, L., Leake, J. R., Leith, I. D., and Sheppard, L. J. (2012). Impacts of atmospheric nitrogen deposition: responses of multiple plant and soil parameters across contrasting ecosystems in long-term field experiments. Global Change Biology 18, 1197–1215.
| Impacts of atmospheric nitrogen deposition: responses of multiple plant and soil parameters across contrasting ecosystems in long-term field experiments.Crossref | GoogleScholarGoogle Scholar |
Phuyal, M., Artz, R. R., Sheppard, L., Leith, I. D., and Johnson, D. (2008). Long-term nitrogen deposition increases phosphorus limitation of bryophytes in an ombrotrophic bog. Plant Ecology 196, 111–121.
| Long-term nitrogen deposition increases phosphorus limitation of bryophytes in an ombrotrophic bog.Crossref | GoogleScholarGoogle Scholar |
Power, S., Ashmore, M., Cousins, D., and Ainsworth, N. (1995). Long term effects of enhanced nitrogen deposition on a lowland dry heath in southern Britain. Water, Air, and Soil Pollution 85, 1701–1706.
| Long term effects of enhanced nitrogen deposition on a lowland dry heath in southern Britain.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK28Xit1eisrk%3D&md5=459f3a1c93983415a7c5d99983f86707CAS |
Power, S. A., Ashmore, M. R., and Cousins, D. A. (1998). Impacts and fate of experimentally enhanced nitrogen deposition on a British lowland heath. Environmental Pollution 102, 27–34.
| Impacts and fate of experimentally enhanced nitrogen deposition on a British lowland heath.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK1MXjvVarug%3D%3D&md5=0a03ba5444b945246cba33bdf3841cc0CAS |
Power, S. A., Green, E. R., Barker, C. G., Bell, J. N. B., and Ashmore, M. R. (2006). Ecosystem recovery: heathland response to a reduction in nitrogen deposition. Global Change Biology 12, 1241–1252.
| Ecosystem recovery: heathland response to a reduction in nitrogen deposition.Crossref | GoogleScholarGoogle Scholar |
Price, E. A., and Hutchings, M. J. (1992). The causes and developmental effects of integration and independence between different parts of Glechoma hederacea clones. Oikos 63, 376–386.
| The causes and developmental effects of integration and independence between different parts of Glechoma hederacea clones.Crossref | GoogleScholarGoogle Scholar |
Ripley, B. D. (1977). Modelling spatial patterns. Journal of the Royal Statistical Society. Series B. (Methodological) 39, 172–212.
Robinson, D., Hodge, A., Griffiths, B. S., and Fitter, A. H. (1999). Plant root proliferation in nitrogen–rich patches confers competitive advantage. Proceedings of the Royal Society of London. Series B, Biological Sciences 266, 431–435.
| Plant root proliferation in nitrogen–rich patches confers competitive advantage.Crossref | GoogleScholarGoogle Scholar |
Shen, Y., Chen, W., Yang, G., Yang, X., Liu, N., Sun, X., Chen, J., and Zhang, Y. (2016). Can litter addition mediate plant productivity responses to increased precipitation and nitrogen deposition in a typical steppe? Ecological Research 31, 579–587.
| Can litter addition mediate plant productivity responses to increased precipitation and nitrogen deposition in a typical steppe?Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC28XosVarsLk%3D&md5=31a81fc34e43cf3ab054fd870f2a49eeCAS |
Silvertown, J., and Charlesworth, D. (2009). ‘Introduction to Plant Population Biology.’ (Blackwell Science: Oxford, UK.)
Steffen, W. L., Walker, B. H., Ingram, J. S., and Koch, G. W. (1992). Global change and terrestrial ecosystems. The operational plan. Global Change Report, No. 21, Stockholm, Sweden.
Stevens, C. J., Dise, N. B., Mountford, J. O., and Gowing, D. J. (2004). Impact of nitrogen deposition on the species richness of grasslands. Science 303, 1876–1879.
| Impact of nitrogen deposition on the species richness of grasslands.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXitFehurk%3D&md5=2217f5f1d4f0d14f5aced40dcc8627d2CAS |
Stevens, C. J., Dise, N. B., Gowing, D. J. G., and Mountford, J. O. (2006). Loss of forb diversity in relation to nitrogen deposition in the UK: regional trends and potential controls. Global Change Biology 12, 1823–1833.
| Loss of forb diversity in relation to nitrogen deposition in the UK: regional trends and potential controls.Crossref | GoogleScholarGoogle Scholar |
Stevens, C. J., Dupre, C., Dorland, E., Gaudnik, C., Gowing, D. J., Bleeker, A., Diekmann, M., Alard, D., Bobbink, R., Fowler, D., Corcket, E., Mountford, J. O., Vandvik, V., Aarrestad, P. A., Muller, S., and Dise, N. B. (2010). Nitrogen deposition threatens species richness of grasslands across Europe. Environmental Pollution 158, 2940–2945.
| Nitrogen deposition threatens species richness of grasslands across Europe.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXps1Ghsr4%3D&md5=4bb2f989383b42caefbfeb47d3c77043CAS |
Stevens, C. J., Manning, P., van den Berg, L. J., de Graaf, M. C., Wamelink, G. W., Boxman, A. W., Bleeker, A., Vergeer, P., Arroniz-Crespo, M., Limpens, J., Lamers, L. P., Bobbink, R., and Dorland, E. (2011). Ecosystem responses to reduced and oxidised nitrogen inputs in European terrestrial habitats. Environmental Pollution 159, 665–676.
| Ecosystem responses to reduced and oxidised nitrogen inputs in European terrestrial habitats.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXnsFWksw%3D%3D&md5=d2f8ca84a2c02f2f4e9f7072f0df9f3aCAS |
Suding, K. N., Collins, S. L., Gough, L., Clark, C., Cleland, E. E., Gross, K. L., Milchunas, D. G., and Pennings, S. (2005). Functional- and abundance-based mechanisms explain diversity loss due to N fertilization. Proceedings of the National Academy of Sciences of the United States of America 102, 4387–4392.
| Functional- and abundance-based mechanisms explain diversity loss due to N fertilization.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2MXivFCrtbg%3D&md5=28a326c87b12ff0699344cbf9133e98dCAS |
Tian, D., and Niu, S. (2015). A global analysis of soil acidification caused by nitrogen addition. Environmental Research Letters 10, 024019.
| A global analysis of soil acidification caused by nitrogen addition.Crossref | GoogleScholarGoogle Scholar |
Wang, X., Liang, C., and Wang, W. (2014). Balance between facilitation and competition determines spatial patterns in a plant population. Chinese Science Bulletin 59, 1405–1415.
| Balance between facilitation and competition determines spatial patterns in a plant population.Crossref | GoogleScholarGoogle Scholar |
Wiegand, T. (2014). User Manual for Programita software. Department of Ecological Modelling, Helmholtz Centre for Environmental Research, Leipzig, Germany. Available at: http://programita.org
Wiegand, T., and Moloney, K. A. (2004). Rings, circles, and null-models for point pattern analysis in ecology. Oikos 104, 209–229.
| Rings, circles, and null-models for point pattern analysis in ecology.Crossref | GoogleScholarGoogle Scholar |
Wiegand, T., and Moloney, K. A. (2014). ‘A Handbook of Spatial Point Pattern Analysis in Ecology.’ (Chapman and Hall/CRC Press: Boca Raton, FL.)
Wiens, J. A., and Stenseth, N. C. (1993). Ecological mechanisms and landscape ecology. Oikos 66, 369–380.
| Ecological mechanisms and landscape ecology.Crossref | GoogleScholarGoogle Scholar |
Ye, X. H., Yu, F. H., and Dong, M. (2006). A trade-off between guerrilla and phalanx growth forms in Leymus secalinus under different nutrient supplies. Annals of Botany 98, 187–191.
| A trade-off between guerrilla and phalanx growth forms in Leymus secalinus under different nutrient supplies.Crossref | GoogleScholarGoogle Scholar |
