{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T18:03:52Z","timestamp":1767895432015,"version":"3.49.0"},"reference-count":60,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2022,10,27]],"date-time":"2022-10-27T00:00:00Z","timestamp":1666828800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","doi-asserted-by":"publisher","award":["PCIF\/GVB\/0202\/2017"],"award-info":[{"award-number":["PCIF\/GVB\/0202\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Plants"],"abstract":"<jats:p>Woody invasive species pose a big threat to ecosystems worldwide. Among them, Acacia longifolia is especially aggressive, fundamentally changing ecosystem structure through massive biomass input. This biomass is rarely harvested for usage; thus, these plants constitute a nuisance for stakeholders who invest time and money for control without monetary return. Simultaneously, there is an increased effort to valorise its biomass, e.g., for compost, growth substrate or as biofuel. However, to incentivise A. longifolia harvest and usage, stakeholders need to be able to estimate what can be obtained from management actions. Thus, the total biomass and its quality (C\/N ratio) need to be predicted to perform cost\u2013benefit analyses for usage and determine the level of invasion that has already occurred. Here, we report allometric biomass models for major biomass pools, as well as give an overview of biomass quality. Subsequently, we derive a simplified volume-based model (BM ~ 6.297 + 0.982 \u00d7 Vol; BM = total dry biomass and Vol = plant volume), which can be applied to remote sensing data or with in situ manual measurements. This toolkit will help local stakeholders, forest managers or municipalities to predict the impact and valorisation potential of this invasive species and could ultimately encourage its management.<\/jats:p>","DOI":"10.3390\/plants11212865","type":"journal-article","created":{"date-parts":[[2022,10,27]],"date-time":"2022-10-27T22:36:17Z","timestamp":1666910177000},"page":"2865","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["From a Lose\u2013Lose to a Win\u2013Win Situation: User-Friendly Biomass Models for Acacia longifolia to Aid Research, Management and Valorisation"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1137-0651","authenticated-orcid":false,"given":"Florian","family":"Ulm","sequence":"first","affiliation":[{"name":"cE3c\u2013Center for Ecology, Evolution and Environmental Changes & CHANGE\u2013Global Change and Sustainability Institute, Faculdade de Ci\u00eancias da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal"}]},{"given":"Mariana","family":"Estorninho","sequence":"additional","affiliation":[{"name":"cE3c\u2013Center for Ecology, Evolution and Environmental Changes & CHANGE\u2013Global Change and Sustainability Institute, Faculdade de Ci\u00eancias da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8007-5031","authenticated-orcid":false,"given":"Joana Guedes","family":"de Jesus","sequence":"additional","affiliation":[{"name":"cE3c\u2013Center for Ecology, Evolution and Environmental Changes & CHANGE\u2013Global Change and Sustainability Institute, Faculdade de Ci\u00eancias da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal"}]},{"given":"Miguel Goden","family":"de Sousa Prado","sequence":"additional","affiliation":[{"name":"cE3c\u2013Center for Ecology, Evolution and Environmental Changes & CHANGE\u2013Global Change and Sustainability Institute, Faculdade de Ci\u00eancias da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal"},{"name":"Sousa Prado & Filhos, Agropecu\u00e1ria Lda, 7645-239 Vila Nova de Milfontes, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3100-463X","authenticated-orcid":false,"given":"Cristina","family":"Cruz","sequence":"additional","affiliation":[{"name":"cE3c\u2013Center for Ecology, Evolution and Environmental Changes & CHANGE\u2013Global Change and Sustainability Institute, Faculdade de Ci\u00eancias da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4396-7073","authenticated-orcid":false,"given":"Cristina","family":"M\u00e1guas","sequence":"additional","affiliation":[{"name":"cE3c\u2013Center for Ecology, Evolution and Environmental Changes & CHANGE\u2013Global Change and Sustainability Institute, Faculdade de Ci\u00eancias da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1111\/gcb.14893","article-title":"Global change biology: A primer","volume":"26","author":"Sage","year":"2020","journal-title":"Glob. Change Biol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"473","DOI":"10.1007\/s10530-013-0606-9","article-title":"Tree invasions: Patterns, processes, challenges and opportunities","volume":"16","author":"Richardson","year":"2014","journal-title":"Biol. Invasions"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"153","DOI":"10.1111\/j.1461-0248.2006.00997.x","article-title":"Ecosystem engineering in space and time","volume":"10","author":"Hastings","year":"2007","journal-title":"Ecol. Lett."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2613","DOI":"10.1890\/14-2172.1","article-title":"A unified approach for quantifying invasibility and degree of invasion","volume":"96","author":"Guo","year":"2015","journal-title":"Ecology"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1016\/j.enpol.2013.11.033","article-title":"Woody biomass energy potential in 2050","volume":"66","author":"Lauri","year":"2014","journal-title":"Energy Policy"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"613","DOI":"10.1016\/j.biombioe.2003.07.005","article-title":"Global biomass fuel resources","volume":"27","author":"Parikka","year":"2004","journal-title":"Biomass Bioenergy"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"697","DOI":"10.1016\/j.wasman.2009.09.046","article-title":"Energy or compost from green waste?\u2014A CO2\u2014Based assessment","volume":"30","author":"Kranert","year":"2010","journal-title":"Waste Manag."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1016\/j.biombioe.2017.12.025","article-title":"Biomass valorization in the management of woody plant invaders: The case of Pittosporum undulatum in the Azores","volume":"109","author":"Silva","year":"2018","journal-title":"Biomass Bioenergy"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1002\/bbb.1539","article-title":"Biomass of invasive plant species as a potential feedstock for bioenergy production","volume":"9","author":"Appels","year":"2015","journal-title":"Biofuels Bioprod. Biorefining"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Souza-Alonso, P., Rodr\u00edguez, J., Gonz\u00e1lez, L., and Lorenzo, P. (2017). Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas. Ann. For. Sci., 74.","DOI":"10.1007\/s13595-017-0651-0"},{"key":"ref_11","first-page":"187","article-title":"Could control of invasive Acacias be a source of biomass for energy under Mediterranean conditions?","volume":"37","author":"Carneiro","year":"2014","journal-title":"Chem. Eng."},{"key":"ref_12","first-page":"73","article-title":"Performance assessment of invasive Acacia dealbata as a fuel for a domestic pellet boiler","volume":"42","author":"Ferreira","year":"2014","journal-title":"Chem. Eng. Trans."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Correia, R., Quintela, J.C., Duarte, M.P., and Gon\u00e7alves, M. (2020). Insights for the valorization of biomass from portuguese invasive Acacia spp. in a biorefinery perspective. Forests, 11.","DOI":"10.3390\/f11121342"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1125","DOI":"10.1177\/0734242X13502384","article-title":"Composting for management and resource recovery of invasive Acacia species","volume":"31","author":"Brito","year":"2013","journal-title":"Waste Manag. Res."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"622","DOI":"10.1016\/j.jclepro.2018.12.069","article-title":"Sustainable urban agriculture using compost and an open-pollinated maize variety","volume":"212","author":"Ulm","year":"2019","journal-title":"J. Clean. Prod."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"363","DOI":"10.1016\/S0269-7491(01)00212-3","article-title":"Measuring carbon in forests: Current status and Future challenges","volume":"116","author":"Brown","year":"2002","journal-title":"Environ. Pollut."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1648","DOI":"10.1016\/j.foreco.2011.07.018","article-title":"Estimating carbon stock in secondary forests: Decisions and uncertainties associated with allometric biomass models","volume":"262","author":"Ransijn","year":"2011","journal-title":"For. Ecol. Manag."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Stephan, B., and Lane, R. (2014). Allometric Equations and Timber Markets: An Important Forerunner of REDD+?. The Politics of Carbon Markets, Taylor & Francis Group. [1st ed.].","DOI":"10.4324\/9781315886985-12"},{"key":"ref_19","unstructured":"Picard, N., Saint-Andr\u00e9, L., and Henry, M. (2012). Manual for Building Tree Volume and Biomass Allometric Equations: From Field Measurement to Prediction, Centre de Coop\u00e9ration Internationale en Recherche Agronomique pour le D\u00e9veloppement."},{"key":"ref_20","first-page":"25","article-title":"Equations for predicting the biomass of Acacia cyclops and Acacia saligna in the western and eastern Cape regions of South Africa Part 1: Tree-level models","volume":"201","author":"Theron","year":"2004","journal-title":"South. Afr. For. J."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"467","DOI":"10.1007\/s00468-004-0333-z","article-title":"Additive biomass equations for native eucalypt forest trees of temperate Australia","volume":"18","author":"Bi","year":"2004","journal-title":"Trees"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"640","DOI":"10.1071\/BT11018","article-title":"Restore and sequester: Estimating biomass in native Australian woodland ecosystems for their carbon-Funded restoration","volume":"59","author":"Jonson","year":"2011","journal-title":"Aust. J. Bot."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Vega, J.A., Arellano-P\u00e9rez, S., \u00c1lvarez-Gonz\u00e1lez, J.G., Fern\u00e1ndez, C., Jim\u00e9nez, E., Fern\u00e1ndez-Alonso, J.M., Vega-Nieva, D.J., Briones-Herrera, C., Alonso-Rego, C., and Font\u00farbel, T. (2022). Modelling aboveground biomass and fuel load components at stand level in shrub communities in NW Spain. For. Ecol. Manag., 505.","DOI":"10.1016\/j.foreco.2021.119926"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Bonham, C.D. (2013). Measurements for Terrestrial Vegetation, Wiley-Blackwell. [2nd ed.].","DOI":"10.1002\/9781118534540"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"463","DOI":"10.1007\/s10457-012-9509-5","article-title":"Carbon storage in the Mediterranean upland shrub communities of Montesinho Natural Park, northeast of Portugal","volume":"86","author":"Fonseca","year":"2012","journal-title":"Agrofor. Syst."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1016\/j.jaridenv.2012.11.002","article-title":"The contribution of two common shrub species to aboveground and belowground carbon stock in Iberian dehesas","volume":"91","author":"Moreno","year":"2013","journal-title":"J. Arid. Environ."},{"key":"ref_27","first-page":"767","article-title":"The use of fixed\u2013wing UAV photogrammetry with LiDAR DTM to estimate merchantable volume and carbon stock in living biomass over a mixed conifer-broadleaf forest","volume":"73","author":"Jayathunga","year":"2018","journal-title":"Int. J. Appl. Earth Obs. Geoinf."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Guimar\u00e3es, N., P\u00e1dua, L., Marques, P., Silva, N., Peres, E., and Sousa, J.J. (2020). Forestry remote sensing from unmanned aerial vehicles: A review focusing on the data, processing and potentialities. Remote Sens., 12.","DOI":"10.3390\/rs12061046"},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Dainelli, R., Toscano, P., Di Gennaro, S.F., and Matese, A. (2021). Recent advances in Unmanned Aerial Vehicles forest remote sensing\u2014A systematic review. Part II: Research applications. Forests, 12.","DOI":"10.3390\/f12040397"},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Puliti, S., Breidenbach, J., and Astrup, R. (2020). Estimation of forest growing stock volume with UAV laser scanning data: Can it be done without field data?. Remote Sens., 12.","DOI":"10.3390\/rs12081245"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"157","DOI":"10.1007\/s10342-007-0168-4","article-title":"Generalized allometric volume and biomass equations for some tree species in Europe","volume":"126","author":"Muukkonen","year":"2007","journal-title":"Eur. J. For. Res."},{"key":"ref_32","unstructured":"Ravindranath, N.H., and Ostwald, M. (2008). Methods for Estimating Above-Ground Biomass, Springer."},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Henry, M., Bombelli, A., Trotta, C., Alessandrini, A., Birigazzi, L., Sola, G., Vieilledent, G., Santenoise, P., Longuetaud, F., and Valentini, R. (2013). GlobAllomeTree: International platform for tree allometric equations to support volume, biomass and carbon assessment. Iforest Biogeosci. For., 6.","DOI":"10.3832\/ifor0901-006"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1086\/282344","article-title":"Interpretation of the coefficient in the allometric equation","volume":"99","author":"White","year":"1965","journal-title":"Am. Nat."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"871","DOI":"10.1017\/S1464793104006499","article-title":"Plant allometry: Is there a grand unifying theory?","volume":"79","author":"Niklas","year":"2004","journal-title":"Biol. Rev."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"713","DOI":"10.1111\/j.1365-2435.2007.01276.x","article-title":"Consistency between an allometric approach and optimal partitioning theory in global patterns of plant biomass allocation","volume":"21","author":"McCarthy","year":"2007","journal-title":"Funct. Ecol."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"736","DOI":"10.1111\/nph.13571","article-title":"How does biomass distribution change with size and differ among species? An analysis for 1200 plant species from five continents","volume":"208","author":"Poorter","year":"2015","journal-title":"New Phytol."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1111\/j.1469-8137.2011.03952.x","article-title":"Biomass allocation to leaves, stems and roots: Meta-analyses of interspecific variation and environmental control","volume":"193","author":"Poorter","year":"2012","journal-title":"New Phytol."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1016\/j.foreco.2017.04.011","article-title":"Generalized biomass and leaf area allometric equations for European tree species incorporating stand structure, tree age and climate","volume":"396","author":"Forrester","year":"2017","journal-title":"For. Ecol. Manag."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"486","DOI":"10.1016\/j.wasman.2018.04.037","article-title":"A systematic review on the composting of green waste: Feedstock quality and optimization strategies","volume":"77","author":"Dominguez","year":"2018","journal-title":"Waste Manag."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"973","DOI":"10.1016\/j.biombioe.2006.06.011","article-title":"Chemical properties of solid biofuels\u2014Significance and impact","volume":"30","author":"Obernberger","year":"2006","journal-title":"Biomass Bioenergy"},{"key":"ref_42","doi-asserted-by":"crossref","unstructured":"Rundel, P.W., Ehleringer, J.R., and Nagy, K.H. (1989). Carbon Isotope Fractionation and Plant Water-Use-Efficiency. Stable Isotopes in Ecological Research, Springer.","DOI":"10.1007\/978-1-4612-3498-2"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1111\/jvs.12608","article-title":"Invasive acacias differ from native dune species in the hyperspectral\/biochemical trait space","volume":"29","author":"Hellmann","year":"2018","journal-title":"J. Veg. Sci."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"231","DOI":"10.1111\/oik.03810","article-title":"N\/P imbalance as a key driver for the invasion of oligotrophic dune systems by a woody legume","volume":"126","author":"Ulm","year":"2017","journal-title":"Oikos"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"980","DOI":"10.1111\/j.1469-8137.2009.02917.x","article-title":"Global patterns of foliar nitrogen isotopes and their relationships with climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability","volume":"183","author":"Craine","year":"2009","journal-title":"New Phytol."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"680","DOI":"10.1890\/13-0070.1","article-title":"The importance of crown dimensions to improve tropical tree biomass estimates","volume":"24","author":"Goodman","year":"2014","journal-title":"Ecol. Appl."},{"key":"ref_47","doi-asserted-by":"crossref","unstructured":"Wertz, B., Bembenek, M., Karaszewski, Z., Ocha\u0142, W., Skorupski, M., Strzeli\u0144ski, P., W\u0119giel, A., and Mederski, P.S. (2020). Impact of Stand Density and Tree Social Status on Aboveground Biomass Allocation of Scots Pine Pinus sylvestris L. Forests, 11.","DOI":"10.3390\/f11070765"},{"key":"ref_48","first-page":"41","article-title":"A comparison of the impacts of winter versus summer burning of slash fuel in alien-invaded fynbos areas in the Western Cape","volume":"192","author":"Holmes","year":"2001","journal-title":"South. Afr. For. J."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1111\/gcb.13388","article-title":"Allometric equations for integrating remote sensing imagery into forest monitoring programmes","volume":"23","author":"Jucker","year":"2017","journal-title":"Glob. Change Biol."},{"key":"ref_50","doi-asserted-by":"crossref","unstructured":"De Sa, N.C., Castro, P., Carvalho, S., Marchante, E., L\u00f3pez-N\u00fa\u00f1ez, F.A., and Marchante, H. (2018). Mapping the flowering of an invasive plant using unmanned aerial vehicles: Is there potential for biocontrol monitoring?. Front. Plant Sci., 9.","DOI":"10.3389\/fpls.2018.00293"},{"key":"ref_51","first-page":"276","article-title":"Automatic detection of Acacia longifolia invasive species based on UAV-acquired aerial imagery","volume":"9","author":"Santana","year":"2022","journal-title":"Inf. Process. Agric."},{"key":"ref_52","first-page":"45","article-title":"Beziehungen zwischen Bestandsh\u00f6he und Bestandsmasse","volume":"80","author":"Eichhorn","year":"1904","journal-title":"Allg. Forst Jagdztg."},{"key":"ref_53","unstructured":"Snowdon, P., Raison, R.J., Keith, H., Ritson, P., Grierson, P., Adams, M., Montagu, K., Bi, H.Q., Burrows, W., and Eamus, D. (2002). Protocol for Sampling Tree and Stand Biomass, Australian Greenhouse Office."},{"key":"ref_54","unstructured":"QGIS Development Team (2021). QGIS Geographic Information System, Open Source Geospatial Foundation. Available online: http:\/\/qgis.org."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"2206","DOI":"10.2134\/jeq2001.2206","article-title":"Rapid, sensitive, microscale determination of phosphate in water and soil","volume":"30","author":"Crutchfield","year":"2001","journal-title":"J. Environ. Qual."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"971","DOI":"10.1039\/an9830800971","article-title":"Interfacing an automatic elemental analyser with an isotope ratio mass spectrometer: The potential for fully automated total nitrogen and nitrogen-15 analysis","volume":"108","author":"Preston","year":"1983","journal-title":"Analyst"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"1953","DOI":"10.1002\/rcm.6971","article-title":"Ignoring IUPAC guidelines for measurement and reporting of stable isotope abundance values affects us all","volume":"28","author":"Coleman","year":"2014","journal-title":"Rapid Commun. Mass Spectrom."},{"key":"ref_58","unstructured":"R Core Team (2020). R: A Language and Environment for Statistical Computing, R Foundation for Statistical Computing. Available online: https:\/\/www.R-project.org\/."},{"key":"ref_59","first-page":"20","article-title":"Segmented: An R Package to Fit Regression Models with Broken-Line Relationships","volume":"8","author":"Muggeo","year":"2008","journal-title":"R News"},{"key":"ref_60","unstructured":"Elzhov, T.V., Mullen, K.M., Spiess, A.N., and Bolker, B. (2022, October 20). minpack.lm: R Interface to the Levenberg-Marquardt Nonlinear Least-Squares Algorithm Found in MINPACK, Plus Support for Bounds. R package version 1.2-1. Available online: https:\/\/CRAN.R-project.org\/package=minpack.lm."}],"container-title":["Plants"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2223-7747\/11\/21\/2865\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:03:59Z","timestamp":1760144639000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2223-7747\/11\/21\/2865"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,27]]},"references-count":60,"journal-issue":{"issue":"21","published-online":{"date-parts":[[2022,11]]}},"alternative-id":["plants11212865"],"URL":"https:\/\/doi.org\/10.3390\/plants11212865","relation":{},"ISSN":["2223-7747"],"issn-type":[{"value":"2223-7747","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10,27]]}}}