Ultra-fine grain landscape-scale quantification of dryland vegetation structure with drone-acquired structure-from-motion photogrammetry

Remote Sensing of Environment

Volumn 183, Issue , 2016, Pages 129-143

  Cunliffe, Andrew M ^a   Brazier, Richard E ^a   Anderson, Karen ^a  

^a UNIVERSITY OF EXETER   (United Kingdom)

Author keywords

Biomass; Biophysical; Canopy height model; Grassland; Rangeland; Semi arid; SfM; Shrubland; UAS; UAV; Vegetation

Indexed keywords

ANTENNAS; BIOMASS; DRONES; FORESTRY; PHOTOGRAMMETRY; UNMANNED AERIAL VEHICLES (UAV); VEGETATION;

BIOPHYSICAL; CANOPY HEIGHT MODELS; GRASSLAND; RANGELAND; SEMI ARID; SHRUBLANDS;

ECOSYSTEMS;

ABOVEGROUND BIOMASS; AERIAL PHOTOGRAPH; BIOPHYSICS; CANOPY; FOREST ECOSYSTEM; GRASSLAND; PHOTOGRAMMETRY; PLANT COMMUNITY; RANGELAND; REMOTE SENSING; SEMIARID REGION; SHRUBLAND; SPATIAL RESOLUTION; VEGETATION STRUCTURE;

EID: 84971645573     PISSN: 00344257     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.rse.2016.05.019     Document Type: Article

References (144)

1. Abrahams A.D., Parsons A.J., Wainwright J. Resistance to overland flow on semiarid grassland and shrubland hillslopes, Walnut Gulch, southern Arizona. Journal of Hydrology 1994, 156:431-446.
2. Abrahams A.D., Parsons A.J., Wainwright J. Disposition of rainwater under creosotebush. Hydrological Processes 2003, 17:2555-2566. 10.1002/hyp.1272.
3. Adeel Z., Safriel U., Niemeijer D., White R. Ecosystems and human wellbeing: Desertification synthesis. Millennium Ecosystem Assessment 2005, World Resources Institute, Washington, D.C.
4. Adeline K.R.M., Chen M., Briottet X., Pang S.K., Paparoditis N. Shadow detection in very high spatial resolution aerial images: A comparative study. ISPRS Journal of Photogrammetry and Remote Sensing 2013, 80:21-38. 10.1016/j.isprsjprs.2013.02.003.
5. Agisoft Agisoft PhotoScan user manual: Professional edition, V 1.1.0, Agisoft 2014.
6. Agisoft Agisoft PhotoScan user manual: Professional edition, V 1.2.0, Agisoft 2015.
7. 2 sink. Science 2015, 348(6237):895-899. 10.1126/science.aaa1668.
8. Allen A.P., Pockman W.T., Restrepo C., Milne B.T. Allometry, growth and population regulation of the desert shrub Larrea tridentata. Functional Ecology 2008, 22(2):197-204. 10.1111/j.1365-2435.2007.01376.x.
9. Anderson K., Gaston K.J. Lightweight unmanned aerial vehicles (UAVs) will revolutionise spatial ecology. Frontiers in Ecology and the Environment 2013, 11(3):138-146. 10.1890/120150.
10. Ansley R.J., Mirik M., Surber B.W., Park S.C. Canopy area and aboveground mass of individual redberry juniper (Juniperus pinchotii) trees. Rangeland Ecology & Management 2012, 65(2):189-195. 10.2111/REM-D-11-00112.1.
11. Asner G.P., et al. High-resolution mapping of forest carbon stocks in the Colombian Amazon. Biogeosciences 2012, 9(7):2683-2696. 10.5194/bg-9-2683-2012.
12. Baccini A., Laporte N., Goetz S.J., Sun M., Dong H. A first map of tropical Africa's above-ground biomass derived from satellite imagery. Environmental Research Letters 2008, 3(4):045011. 10.1088/1748-9326/3/4/045011.
13. Balzarolo M., et al. Matching the phenology of net ecosystem exchange and vegetation indices estimated with MODIS and FLUXNET in-situ observations. Remote Sensing of Environment 2016, 174:290-300. 10.1016/j.rse.2015.12.017.
14. Barbour M.G. Desert dogma reexamined: Root/shoot productivity and plant spacing. American Midland Naturalist 1973, 89(1):41-57. 10.2307/2424134.
15. Barbour M.G., MacMahon J.A., Bamberg S.A., Ludwig J.A. The structure and distribution of Larrea communities. Creosote bush: Biology and chemistry of Larrea in new world deserts 1977, 227-251. Dowden, Hutchinson and Ross, Stroudverg. T.H. Mabry, J.H. Hunziker, D.R. Difeo (Eds.).
16. Browning D.M., Rango A., Karl J.W., Laney C.M., Vivoni E.R., Tweedie C.E. Emerging technological and cultural shifts advancing drylands research and management. Frontiers in Ecology and the Environment 2015, 13(1):52-60. 10.1890/140161.
17. Burg D., Malkinson D., Katriel G., Wittenberg L. Modeling the dynamics of soil erosion and vegetative control - Catastrophe and hysteresis. Theoretical Ecology 2015, 8(1):67-79. 10.1007/s12080-014-0233-9.
18. Calders K., et al. Nondestructive estimates of above-ground biomass using terrestrial laser scanning. Methods in Ecology and Evolution 2015, 6(2):198-208. 10.1111/2041-210X.12301.
19. Chave J., Condit R., Aguilar S., Hernandez A., Lao S., Perez R. Error propagation and scaling for tropical forest biomass estimates. Philosophical Transactions of the Royal Society of London B: Biological Sciences 2004, 359(1443):409-420. 10.1098/rstb.2003.1425.
20. Chew R.M., Chew A.E. The primary productivity of a desert-shrub (Larrea tridentata) community. Ecological Monographs 1965, 35(4):355-375. 10.2307/1942146.
21. Cleary M.B., Pendall E., Ewers B.E. Testing sagebrush allometric relationships across three fire chronosequences in Wyoming, USA. Journal of Arid Environments 2008, 72(4):285-301. 10.1016/j.jaridenv.2007.07.013.
22. Congalton R.G. A review of assessing the accuracy of classifications of remotely sensed data. Remote Sensing of Environment 1991, 37(1):35-46. 10.1016/0034-4257(91)90048-B.
23. Corkidi L., Rowland D.L., Johnson N.C., Allen E.B. Nitrogen fertilization alters the functioning of arbuscular mycorrhizas at two semiarid grasslands. Plant and Soil 2002, 240(2):299-310. 10.1023/A:1015792204633.
24. Cunliffe A.M., Baird A.J., Holden J. Hydrological hotspots in blanket peatlands: Spatial variation in peat permeability around a natural soil pipe. Water Resources Research 2013, 49(9):5342-5354. 10.1002/wrcr.20435.
25. Cunliffe A.M., Puttock A.K., Turnbull L., Wainwright J., Brazier R.E. Dryland, calcareous soils store (and lose) significant quantities of near-surface organic carbon. Journal of Geophysical Research, Earth Surface 2016, 10.1002/2015JF003628.
26. D'Odorico P., Porporato A. Soil moisture dynamics in water-limited ecosystems. Dryland Ecohydrology 2006, 31-46. Springer. P. D'Odorico, A. Porporato (Eds.).
27. Dandois J.P., Ellis E.C. Remote sensing of vegetation structure using computer vision. Remote Sensing 2010, 2(4):1157-1176. 10.3390/rs2041157.
28. Dandois J.P., Ellis E.C. High spatial resolution three-dimensional mapping of vegetation spectral dynamics using computer vision. Remote Sensing of Environment 2013, 136:259-276. 10.1016/j.rse.2013.04.005.
29. Dandois J.P., Olano M., Ellis E.C. Optimal altitude, overlap, and weather conditions for computer vision UAV estimates of forest structure. Remote Sensing 2015, 7(10):13895-13920. 10.3390/rs71013895.
30. De Soyza A.G., Whitford W.G., Martinez-Meza E., Van Zee J.W. Variation in creosotebush (Larrea tridentata) canopy morphology in relation to habitat, soil fertility and associated annual plant communities. American Midland Naturalist 1997, 137(1):13-26. 10.2307/2426751.
31. Drewa P.B., Havstad K.M. Effects of fire, grazing, and the presence of shrubs on Chihuahuan desert grasslands. Journal of Arid Environments 2001, 48:429-443. 10.1006/jare.2000.0769.
32. Epron D., Nouvellon Y., Ryan M.G. Introduction to the invited issue on carbon allocation of trees and forests. Tree Physiology 2012, 32(6):639-643. 10.1093/treephys/tps055.
33. Falster D.S., Westoby M. Leaf size and angle vary widely across species: What consequences for light interception?. New Phytologist 2003, 158(3):509-525. 10.1046/j.1469-8137.2003.00765.x.
34. Féret J.-B., Asner G.P. Semi-supervised methods to identify individual crowns of lowland tropical canopy species using imaging spectroscopy and LiDAR. Remote Sensing 2012, 4(8):2457-2476. 10.3390/rs4082457.
35. Ffolliott P.F., Gottfried G.J. Dynamics of a Pinyon-Juniper stand in Northern Arizona: A half-century history. Research Paper 2002, Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fort Collins, CO, USA.
36. Friedel M.H., Laycock W.A., Bastin G.N. Assessing rangeland condition and trend. Field and laboratory methods for grassland and animal production research 2000, 227-262. CABI Publishing, New York, NY, USA. L. Mannetje, R.M. Jones (Eds.).
37. Gentine P., Guérin M., Uriarte M., McDowell N.G., Pockman W.T. An allometry-based model of the survival strategies of hydraulic failure and carbon starvation. Ecohydrology 2015, (n/a-n/a). 10.1002/eco.1654.
38. Getzin S., Nuske R.S., Wiegand K. Using unmanned aerial vehicles (UAV) to quantify spatial gap patterns in forests. Remote Sensing 2014, 6(8):6988-7004. 10.3390/rs6086988.
39. Gholz H.L. Structure and productivity of Juniperus occidentalis in central oregon. American Midland Naturalist 1980, 103(2):251-261. 10.2307/2424623.
40. Gillan J.K., Karl J.W., Duniway M., Elaksher A. Modeling vegetation heights from high resolution stereo aerial photography: An application for broad-scale rangeland monitoring. Journal of Environmental Management 2014, 144:226-235. 10.1016/j.jenvman.2014.05.028.
41. Gini R., Pagliari D., Passoni D., Pinto L., Sona G., Dosso P. UAV photogrammetry: Block triangulation comparisons, ISPRS - International Archives of the Photogrammetry. Remote Sensing and Spatial Information Sciences 2013, XL-1(W2):157-162. 10.5194/isprsarchives-XL-1-W2-157-2013.
42. Glenn N.F., Spaete L.P., Sankey T.T., Derryberry D.R., Hardegree S.P., Mitchell J.J. Errors in LiDAR-derived shrub height and crown area on sloped terrain. Journal of Arid Environments 2011, 75(4):377-382. 10.1016/j.jaridenv.2010.11.005.
43. Gobakken T., Næsset E. Estimation of diameter and basal area distributions in coniferous forest by means of airborne laser scanner data. Scandinavian Journal of Forest Research 2004, 19(6):529-542. 10.1080/02827580410019454.
44. Goodman A.M., Ennos A.R. A comparative study of the response of the roots and shoots of sunflower and maize to mechanical stimulation. Journal of Experimental Botany 1996, 47(10):1499-1507. 10.1093/jxb/47.10.1499.
45. Goodman A.M., Ennos A.R. The effects of soil bulk density on the morphology and anchorage mechanics of the root systems of sunflower and maize. Annals of Botany 1999, 83(3):293-302. 10.1006/anbo.1998.0822.
46. Hellesen T., Matikainen L. An object-based approach for mapping shrub and tree cover on grassland habitats by use of LiDAR and CIR orthoimages. Remote Sensing 2013, 5(2):558-583. 10.3390/rs5020558.
47. Herrick J.E., Van Zee J.W., Havstad K.M., Burkett L., Whitford W.G. Monitoring manual for grassland, shrubland and savanna ecosystems. Supplementary Methods and Interpretation., USDA-ARS Jornada Experimental Range, Las Cruces, NM, UAS 2005.
48. Hill T.C., Williams M., Bloom A.A., Mitchard E.T.A., Ryan C.M. Are inventory based and remotely sensed above-ground biomass estimates consistent?. PloS One 2013, 8(9):e74170. 10.1371/journal.pone.0074170.
49. Holland E.A., Parton W.J., Detling J.K., Coppock D.L. Physiological responses of plant populations to herbivory and their consequences for ecosystem nutrient flow. The American Naturalist 1992, 140(4):685-706.
50. Huang C., Asner G.P., Martin R.E., Barger N.N., Neff J.C. Multiscale analysis of tree cover and aboveground carbon stocks in pinyon-juniper woodlands. Ecological Applications 2009, 19(3):668-681. 10.1890/07-2103.1.
51. Huang C.-Y., Marsh S.E., McClaran M.P., Archer S.R. Postfire stand structure in a semiarid savanna: Cross-scale challenges estimating biomass. Ecological Applications 2007, 17(7):1899-1910. 10.1890/06-1968.1.
52. Huenneke L.F., Clason D., Muldavin E. Spatial heterogeneity in Chihuahuan Desert vegetation: Implications for sampling methods in semi-arid ecosystems. Journal of Arid Environments 2001, 47:257-270. 10.1006/jare.2000.0678.
53. James M.R., Robson S. Straightforward reconstruction of 3D surfaces and topography with a camera: Accuracy and geoscience application. Journal of Geophysical Research 2012, 117:F03017. 10.1029/2011JF002289.
54. James M.R., Robson S. Mitigating systematic error in topographic models derived from UAV and ground-based image networks. Earth Surface Processes and Landforms 2014, 39(10):1413-1420. 10.1002/esp.3609.
55. Jung K., Kaiser S., Böhm S., Nieschulze J., Kalko E.K.V. Moving in three dimensions: Effects of structural complexity on occurrence and activity of insectivorous bats in managed forest stands. Journal of Applied Ecology 2012, 49(2):523-531. 10.1111/j.1365-2664.2012.02116.x.
56. Kimes D.S. Modeling the directional reflectance from complete homogeneous vegetation canopies with various leaf-orientation distributions. Journal of the Optical Society of America. A 1984, 1(7):725-737. 10.1364/JOSAA.1.000725.
57. Krämer S., Miller P.M., Eddleman L.E. Root system morphology and development of seedling and juvenile Juniperus occidentalis. Forest Ecology and Management 1996, 86(1-3):229-240. 10.1016/S0378-1127(96)03769-3.
58. Krofcheck D.J., Eitel J.U.H., Vierling L.A., Schulthess U., Hilton T.M., Dettweiler-Robinson E., Litvak M.E. Detecting mortality induced structural and functional changes in a piñon-juniper woodland using Landsat and RapidEye time series. Remote Sensing of Environment 2014, 151:102-113. 10.1016/j.rse.2013.11.009.
59. Ladwig L.M., Collins S.L., Swann A.L., Xia Y., Allen M.F., Allen E.B. Above- and belowground responses to nitrogen addition in a Chihuahuan Desert grassland. Oecologia 2012, 169(1):177-185. 10.1007/s00442-011-2173-z.
60. Lamlom S.H., Savidge R.A. A reassessment of carbon content in wood: Variation within and between 41 North American species. Biomass and Bioenergy 2003, 25(4):381-388. 10.1016/S0961-9534(03)00033-3.
61. Landis J.R., Koch G.G. A one-way components of variance model for categorical data. Biometrics 1977, 33(4):671-679. 10.2307/2529465.
62. Lefsky M.A., Cohen W.B., Parker G.G., Harding D.J. LiDAR remote sensing for ecosystem studies: LiDAR, an emerging remote sensing technology that directly measures the three-dimensional distribution of plant canopies, can accurately estimate vegetation structural attributes and should be of particular interest to forest, landscape, and global ecologists. Bioscience 2002, 52(1):19-30. 10.1641/0006-3568(2002)052[0019:LRSFES]2.0.CO;2.
63. Li A., Glenn N.F., Olsoy P.J., Mitchell J.J., Shrestha R. Aboveground biomass estimates of sagebrush using terrestrial and airborne LiDAR data in a dryland ecosystem. Agricultural and Forest Meteorology 2015, 213:138-147. 10.1016/j.agrformet.2015.06.005.
64. Lieth H. Primary production of the major vegetation units of the world. Primary Productivity of the Biosphere 1975, 203-215. Springer, Berlin Heidelberg. H. Lieth, R.H. Whittaker (Eds.).
65. Lisein J., Pierrot-Deseilligny M., Bonnet S., Lejeune P. A photogrammetric workflow for the creation of a forest canopy height model from small unmanned aerial system imagery. Forest 2013, 4:922-944. 10.3390/f4040922.
66. Liu Y.Y., Evans J.P., McCabe M.F., de Jeu R.A.M., van Dijk A.I.J.M., Dolman A.J., Saizen I. Changing climate and overgrazing are decimating Mongolian Steppes. PloS One 2013, 8(2):e57599. 10.1371/journal.pone.0057599.
67. Liu Y.Y., van Dijk A.I.J.M., McCabe M.F., Evans J.P., de Jeu R.A.M. Global vegetation biomass change (1988-2008) and attribution to environmental and human drivers. Global Ecology and Biogeography 2013, 22(6):692-705. 10.1111/geb.12024.
68. Lowe D.G. Distinctive image features from scale-invariant keypoints. International Journal of Computer Vision 2004, 60(2):91-110.
69. Ludwig J.A. Distributional adaptations of root systems in desert environments. The belowground ecosystem: A synthesis of plant-associated processes 1977, 85-90. Colorado State University, Fort Collins. J.K. Marshall (Ed.).
70. Ludwig J.A., Reynolds J.F., Whitson P.D. Size-biomass relationships of several Chihuahuan desert shrubs. American Midland Naturalist 1975, 94(2):451-461.
71. Lufafa A., Diédhiou I., Ndiaye N.A.S., Séné M., Kizito F., Dick R.P., Noller J.S. Allometric relationships and peak-season community biomass stocks of native shrubs in Senegal's Peanut Basin. Journal of Arid Environments 2009, 73(3):260-266. 10.1016/j.jaridenv.2008.09.020.
72. Mannetje L.'t. Measuring biomass of grassland vegetation. Field and Laboratory Methods for Grassland and Animal Production Research 2000, 151-178. CABI Publishing, Ney York, NY, USA. L. Mannetje, R.M. Jones (Eds.).
73. Mata-González R., Sosebee R.E., Wan C. Shoot and root biomass of desert grasses as affected by biosolids application. Journal of Arid Environments 2002, 50(3):477-488. 10.1006/jare.2001.0897.
74. McNeil B.E., Pisek J., Lepisk H., Flamenco E.A. Measuring leaf angle distribution in broadleaf canopies using UAVs. Agricultural and Forest Meteorology 2016, 218-219:204-208. 10.1016/j.agrformet.2015.12.058.
75. Miller E.L., Meeuwig R.O., Budy J.D. Biomass of Singleleaf Pinyon and Utah Juniper. United States Department of Agriculture, Forest Service 1981, Intermountain Forest and Range Experimental Station.
76. Miller P.M., Eddleman L.E., Kramer S. Allocation patterns of carbon and minerals in juvenile and small-adult Juniperus occidentalis. Forest Science 1990, 36(3):734-747.
77. Mirik M., Chaudhuri S., Surber B., Ale S., Ansley R.J. Evaluating biomass of Juniper Trees (Juniperus pinchotii) from imagery-derived canopy area using the support vector machine classifier. Advances in Remote Sensing 2013, 2:181-192. 10.4236/ars.2013.22021.
78. Mitchell J.J., Glenn N.F., Sankey T.T., Derryberry D.R., Anderson M.O., Hruska R.C. Small-footprint LiDAR estimations of sagebrush canopy characteristics. Photogrammetric Engineering & Remote Sensing 2011, 77(5):521-530. 10.14358/PERS.77.5.521.
79. Mokany K., Raison R.J., Prokushkin A.S. Critical analysis of root: Shoot ratios in terrestrial biomes. Global Change Biology 2006, 12(1):84-96. 10.1111/j.1365-2486.2005.001043.x.
80. Moore D.I. Core research site web seasonal biomass and seasonal and annual NPP data for the net primary production study at the Sevilleta National Wildlife Refuge, New Mexico (1999-2014). Albuquerque, NM: Sevilleta long term ecological research site database: SEV182 2015, (http://sev.lternet.edu/data/sev-182).
81. Muldavin E.H., Moore D.I., Collins S.L., Wetherill K.R., Lightfoot D.C. Aboveground net primary production dynamics in a northern Chihuahuan Desert ecosystem. Oecologia 2008, 155:123-132.
82. Murray-Tortarolo G., et al. The carbon cycle in Mexico: Past, present and future of C stocks and fluxes. Biogeosciences 2016, 13(1):223-238. 10.5194/bg-13-223-2016.
83. Muukkonen P., Heiskanen J. Biomass estimation over a large area based on standwise forest inventory data and ASTER and MODIS satellite data: A possibility to verify carbon inventories. Remote Sensing of Environment 2007, 107(4):617-624. 10.1016/j.rse.2006.10.011.
84. Nafus A.M., McClaran M.P., Archer S.R., Throop H.L. Multispecies allometric models predict grass biomass in semidesert rangeland. Rangeland Ecology & Management 2009, 62(1):68-72.
85. Neufeld H.S., Meinzer F.C., Wisdom C.S., Sharifi M.R., Rundel P.W., Neufeld M.S., Cunningham G.L. Canopy architecture of Larrea tridentata (DC.) Cov., a desert shrub: Foliage orientation and direct beam radiation interception. Oecologia 1988, 75(1):54-60. 10.1007/BF00378813.
86. Norris M.D., Blair J.M., Johnson L.C., McKane R.B. Assessing changes in biomass, productivity, and C and N stores following Juniperus virginiana forest expansion into tallgrass prairie. Canadian Journal of Forest Research 2001, 31:1940-1946.
87. Northup B.K., Zitzer S.F., Archer S., McMurtry C.R., Boutton T.W. Above-ground biomass and carbon and nitrogen content of woody species in a subtropical thornscrub parkland. Journal of Arid Environments 2005, 62(1):23-43. 10.1016/j.jaridenv.2004.09.019.
88. Nouwakpo S.K., Weltz M.A., McGwire K. Assessing the performance of structure-from-motion photogrammetry and terrestrial LiDAR for reconstructing soil surface microtopography of naturally vegetated plots. Earth Surface Processes and Landforms 2015, (n/a-n/a). 10.1002/esp.3787.
89. Nowak R.S., Moore D.J., Tausch R.J. Ecophysiological patterns of pinyon and juniper 1999, USDA Forest Service Proceedings.
90. Owe M., de Jeu R., Walker J. A methodology for surface soil moisture and vegetation optical depth retrieval using the microwave polarization difference index. IEEE Transactions on Geoscience and Remote Sensing 2001, 39(8):1643-1654. 10.1109/36.942542.
91. Padilla F.M., Miranda J.D., Jorquera M.J., Pugnaire F.I. Variability in amount and frequency of water supply affects roots but not growth of arid shrubs. Plant Ecology 2009, 204(2):261-270.
92. Parsons A.J., Abrahams A.D., Luk S.-H. Hydraulics of interrill overland flow on a semi-arid hillslope, southern Arizona. Journal of Hydrology 1990, 117:255-273. 10.1016/0022-1694(90)90096-G.
93. Peters D.P.C. Plant species dominance at a grassland-shrubland ecotone: An individual-based gap dynamics model of herbaceous and woody species. Ecological Modelling 2002, 152:5-32.
94. Popescu S.C., Wynne R.H., Nelson R.F. Measuring individual tree crown diameter with lidar and assessing its influence on estimating forest volume and biomass. Canadian Journal of Remote Sensing 2003, 29(5):564-577. 10.5589/m03-027.
95. Poulter B., et al. Contribution of semi-arid ecosystems to interannual variability of the global carbon cycle. Nature 2014, 509(7502):600-603. 10.1038/nature13376.
96. Pregitzer K.S., DeForest J.L., Burton A.J., Allen M.F., Ruess R.W., Hendrick R.L. Fine root architecture of nine North American trees. Ecological Monographs 2002, 72(2):293-309. 10.1890/0012-9615(2002)072[0293:FRAONN]2.0.CO;2.
97. Puliti S., Ørka H.O., Gobakken T., Næsset E. Inventory of small forest areas using an unmanned aerial system. Remote Sensing 2015, 7(8):9632-9654. 10.3390/rs70809632.
98. Puttock A. Vegetation change and water, sediment and carbon dynamics in semi-arid environments 2013, University of Exeter.
99. Puttock A.K., Cunliffe A.M., Anderson K., Brazier R.E. Monitoring the impact of Eurasian beaver reintroduction on ecosystem structure using aerial photography collected from a multi-rotor drone. Journal of Unmanned Vehicle Systems 2015, 3(3):123-130. 10.1139/juvs-2015-0005.
100. Puttock A., Dungait J.A.J., Macleod C.J.A., Bol R., Brazier R.E. Woody plant encroachment accelerates erosion of previously stable organic carbon from dryland soils. Journal of Geophysical Research - Biogeosciences 2014, (2014JG002635). 10.1002/2014JG002635.
101. Puttock A., Macleod C.J.A., Bol R., Dungait J.A.J., Brazier R.E. Changes in ecosystem structure, function and hydrological connectivity in semi-arid grass to woody vegetation transitions. Earth Surface Processes and Landforms 2013, 38(13):1602-1611. 10.1002/esp.3455.
102. Rango A., Laliberte A., Herrick J.E., Winters C., Havstad K., Steele C., Browning D. Unmanned aerial vehicle-based remote sensing for rangeland assessment, monitoring, and management. Journal of Applied Remote Sensing 2009, 3. (033542-033542-15).
103. Rango A., Laliberte A., Steele C., Herrick J.E., Bestelmeyer B., Schmugge T., Jenkins V. Using unmanned aerial vehicles for rangelands: Current applications and future potentials. Environmental Practice 2006, 8(3):159-168. 10.1017/S1466046606060224.
104. Remondino F., Spera M.G., Nocerino E., Menna F., Nex F. State of the art in high density image matching. The Photogrammetric Record 2014, 29(146):144-166. 10.1111/phor.12063.
105. Roderick M.L., Chewings V.H., Smith R.C.G. Remote sensing in vegetation and animal studies. Field and Laboratory Methods for Grassland and Animal Production Research 2000, 205-226. CABI Publishing, Ney York, NY, USA. L. Mannetje, R.M. Jones (Eds.).
106. Rozas V., DeSoto L., Olano J.M. Sex-specific, age-dependent sensitivity of tree-ring growth to climate in the dioecious tree Juniperus thurifera. New Phytologist 2009, 182(3):687-697. 10.1111/j.1469-8137.2009.02770.x.
107. Sankey T., Shrestha R., Sankey J.B., Hardegree S., Strand E. Lidar-derived estimate and uncertainty of carbon sink in successional phases of woody encroachment. Journal of Geophysical Research - Biogeosciences 2013, 118(3):1144-1155. 10.1002/jgrg.20088.
108. Schlesinger W.H. Biogeochemistry: An analysis of global change 1997, Academic Press, San Diego, CA, USA. 2nd ed.
109. Schlesinger W.H., Bernhardt E.S. Chapter 5 - The biosphere: The carbon cycle of terrestrial ecosystems. Biogeochemistry (third edition) 2013, 135-172. Academic Press, Boston. W.H.S.S. Bernhardt (Ed.).
110. Schlesinger W.H., Bernhardt E.S. Chapter 6 - The biosphere: Biogeochemical cycling on land. Biogeochemistry (Third Edition) 2013, 173-231. Academic Press, Boston. W.H.S.S. Bernhardt (Ed.).
111. Schlesinger W.H., Pilmanis A.M. Plant-soil interactions in deserts. Biogeochemistry 1998, 42:169-187. 10.1023/A:1005939924434.
112. Schlesinger W.H., Reynolds J.F., Cunningham G.L., Huenneke L.F., Jarrell W.M., Virginia R.A., Whitford W.G. Biological feedbacks in global desertification. Science 1990, 247:1043-1048. 10.1126/science.247.4946.1043.
113. Scott R.L., Biederman J.A., Hamerlynck E.P., Barron-Gafford G.A. The carbon balance pivot point of southwestern U.S. semiarid ecosystems: Insights from the 21st century drought. Journal of Geophysical Research - Biogeosciences 2016, (2015JG003181). 10.1002/2015JG003181.
114. Shahbazi M., Sohn G., Théau J., Menard P. Development and evaluation of a UAV-photogrammetry system for precise 3D environmental modeling. Sensors 2015, 15(11):27493-27524. 10.3390/s151127493.
115. Sims P.L., Singh J.S., Lauenroth W.K. The structure and function of ten Western North American grasslands: I. abiotic and vegetational characteristics. Journal of Ecology 1978, 66:251-285. 10.2307/2259192.
116. Singh S.P. Cover, biomass, and root-shoot habit of Larrea divaricata on a selected site in southern New Mexico, MSc 1964, New Mexico State University, Las Cruces, New Mexico, USA.
117. Smith M.W., Vericat D. From experimental plots to experimental landscapes: Topography, erosion and deposition in sub-humid badlands from structure-from-motion photogrammetry. Earth Surface Processes and Landforms 2015, (n/a-n/a). 10.1002/esp.3747.
118. Smith W.B., Brand G.J. Allometric biomass equations for 98 species of herbs, shrubs and small trees, research note 1983, U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, St. Paul, MN, USA.
119. Sona G., Pinto L., Pagliari D., Passoni D., Gini R. Experimental analysis of different software packages for orientation and digital surface modelling from UAV images. Earth Science Informatics 2014, 7(2):97-107. 10.1007/s12145-013-0142-2.
120. Stewart J., Parsons A.J., Wainwright J., Okin G.S., Bestelmeyer B., Fredrickson E.L., Schlesinger W.H. Modelling emergent patterns of dynamic desert ecosystems. Ecological Monographs 2014, 84(3):373-410. 10.1890/12-1253.1.
121. Strand E.K., Vierling L.A., Smith A.M.S., Bunting S.C. Net changes in aboveground woody carbon stock in western juniper woodlands, 1946-1998. Journal of Geophysical Research, Biogeosciences 2008, 113(G1). 10.1029/2007JG000544.
122. Taylor J.R. An introduction to error analysis: The study of uncertainties in physical measurements 1997, University Science Books, Sausalito, CA, USA.
123. Thomas S.C., Martin A.R. Carbon content of tree tissues: A synthesis. Forest 2012, 3(2):332-352. 10.3390/f3020332.
124. Tonkin T.N., Midgley N.G., Graham D.J., Labadz J.C. The potential of small unmanned aircraft systems and structure-from-motion for topographic surveys: A test of emerging integrated approaches at Cwm Idwal, North Wales. Geomorphology 2014, 226:35-43. 10.1016/j.geomorph.2014.07.021.
125. Turnbull L., Wainwright J., Brazier R.E. Changes in hydrology and erosion over a transition from grassland to shrubland. Hydrological Processes 2010, 24:393-414. 10.1002/hyp.7491.
126. Turnbull L., Wainwright J., Brazier R.E., Bol R. Biotic and abiotic changes in ecosystem structure over a shrub-encroachment gradient in the Southwestern USA. Ecosystems 2010, 13:1239-1255. 10.1007/s10021-010-9384-8.
127. Turnbull L., Wainwright J., Brazier R.E. A conceptual framework for understanding semi-arid land degradation: Ecohydrological interactions across multiple-space and time scales. Ecohydrology 2008, 1:23-34. 10.1002/eco.4.
128. Turner D., Lucieer A., Wallace L. Direct georeferencing of ultrahigh-resolution UAV imagery. IEEE Transactions on Geoscience and Remote Sensing 2014, 52(5):2738-2745. 10.1109/TGRS.2013.2265295.
129. Vierling K.T., Vierling L.A., Gould W.A., Martinuzzi S., Clawges R.M. Lidar: Shedding new light on habitat characterization and modeling. Frontiers in Ecology and the Environment 2008, 6(2):90-98. 10.1890/070001.
130. Vierling L.A., Xu Y., Eitel J.U.H., Oldow J.S. Shrub characterization using terrestrial laser scanning and implications for airborne LiDAR assessment. Canadian Journal of Remote Sensing 2013, 38(6):709-722. 10.5589/m12-057.
131. Wainwright J., Parsons A.J., Abrahams A.D. Rainfall energy under creosotebush. Journal of Arid Environments 1999, 43:111-120.
132. Wainwright J., Parsons A.J., Abrahams A.D. Plot-scale studies of vegetation, overland flow and erosion interactions: Case studies from Arizona and New Mexico. Hydrological Processes 2000, 14:2921-2943.
133. Wallace A., Bamberg S.A., Cha J.W. Quantitative studies of roots of perennial plants in the Mojave Desert. Ecology 1974, 55(5):1160-1162. 10.2307/1940368.
134. Wardley N.W., Milton E.J., Hill C.T. Remote sensing of structurally complex semi-natural vegetation - an example from heathland. International Journal of Remote Sensing 1987, 10.1080/01431168708948613.
135. Westoby M.J., Brasington J., Glasser N.F., Hambrey M.J., Reynolds J.M. "Structure-from-motion" photogrammetry: A low-cost, effective tool for geoscience applications. Geomorphology 2012, 179:300-314. 10.1016/j.geomorph.2012.08.021.
136. White M.A., et al. Intercomparison, interpretation, and assessment of spring phenology in North America estimated from remote sensing for 1982-2006. Global Change Biology 2009, 15(10):2335-2359. 10.1111/j.1365-2486.2009.01910.x.
137. Whitford W.G., Martinez Meza E., DeSoyza A. Morphological variation in creosotebush, Larrea tridentata: Effects on ecosystem properties, vol. General Technical Report. INT-GTR 338. 1995, 195-198. Department of Agriculture, Forest Service Intermountain Research Station, U.S. J.R. Barrow, E. Durant, R.E. Sosebee, R.J. Tausch (Eds.).
138. Wilson A.M., Silander J.A., Gelfand A., Glenn J.H. Scaling up: Linking field data and remote sensing with a hierarchical model. International Journal of Geographical Information Science 2011, 25(3):509-521. 10.1080/13658816.2010.522779.
139. Wilson B.F. Shrub stems: Form and functions. Plant stems: Physiology and functional morphology 1995, 91-104. Academic Press, San Diego, California, USA. B.L. Gartner (Ed.).
140. Woodget A.S., Carbonneau P.E., Visser F., Maddock I.P. Quantifying submerged fluvial topography using hyperspatial resolution UAS imagery and structure from motion photogrammetry. Earth Surface Processes and Landforms 2015, 40(1):47-64. 10.1002/esp.3613.
141. Yao J., Peters D.P.C., Havstad K.M., Gibbens R.P., Herrick J.E. Multi-scale factors and long-term responses of Chihuahuan Desert grasses to drought. Landscape Ecology 2006, 21:1217-1231. 10.1007/s10980-006-0025-8.
142. Zahawi R.A., Dandois J.P., Holl K.D., Nadwodny D., Reid J.L., Ellis E.C. Using lightweight unmanned aerial vehicles to monitor tropical forest recovery. Biological Conservation 2015, 186:287-295. 10.1016/j.biocon.2015.03.031.
143. Zhang X., Kondragunta S. Estimating forest biomass in the USA using generalized allometric models and MODIS land products. Geophysical Research Letters 2006, 33(9):L09402. 10.1029/2006GL025879.
144. Zhang X., Friedl M.A., Schaaf C.B., Strahler A.H., Hodges J.C.F., Gao F., Huete A. Monitoring vegetation phenology using MODIS. Remote Sensing of Environment 2003, 84(3):471-475. 10.1016/S0034-4257(02)00135-9.