Strategies to Maximize the Wood Production in Amazon Forest

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This study combined probability density functions and growth modeling to identify optimal logging diameters for maximizing Amazon forest wood production by species.

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The preprint studied how to choose logging diameters in Amazon forests to maximize wood production sustainably, combining probability density function (PDF) approaches with individual tree growth modeling to generate volume increment curves. Using growth-derived volume increment curves, the authors identified population-level annual maximum volumetric increments that occurred at smaller diameters than those seen at the individual tree level, and they compared outcomes across different minimum cutting diameter (MCD) criteria. When shorter cutting cycles were combined with the population biological rotation point treated as the minimum cutting diameter, they reported higher annual volume increments than those achieved using the Brazilian law criterion (MCD = 50 cm) or other tested MCD values. A key limitation is that the work is a preprint and not peer reviewed. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract BackgroundThis study aimed to develop a procedure to determine which logging diameter would achieve optimal wood production by species, aiming to support sustainable management of the Amazon forest. Two main methodologies of analysis by species were combined: probability density function (PDF) and growth modeling. The growth models were used to derive the volume increment curves at the individual tree level. To detect the points of maximum annual increment in volume at the population tree level we used PDF with adjusted growth equations.ResultsThe population maximum annual volumetric increments occurred in smaller diameters compared to that of the individual-level. When combining shorter cutting cycles with the population biological rotation point considered as the minimum cutting diameter (MCD), we observed higher annual increments in volume than that achieved using the Brazilian law criteria (MCD = 50 cm) or other MCD tested.ConclusionThe procedure proposed may be used by forest managers and forest law-makers, aiming to maximize sustainable wood production in the Amazon forest.
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Strategies to Maximize the Wood Production in Amazon Forest | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Strategies to Maximize the Wood Production in Amazon Forest Aline Canetti, Evaldo Muñoz Braz, Patricia Mattos, Renato Olivir Basso, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-83620/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Background This study aimed to develop a procedure to determine which logging diameter would achieve optimal wood production by species, aiming to support sustainable management of the Amazon forest. Two main methodologies of analysis by species were combined: probability density function (PDF) and growth modeling. The growth models were used to derive the volume increment curves at the individual tree level. To detect the points of maximum annual increment in volume at the population tree level we used PDF with adjusted growth equations. Results The population maximum annual volumetric increments occurred in smaller diameters compared to that of the individual-level. When combining shorter cutting cycles with the population biological rotation point considered as the minimum cutting diameter (MCD), we observed higher annual increments in volume than that achieved using the Brazilian law criteria (MCD = 50 cm) or other MCD tested. Conclusion The procedure proposed may be used by forest managers and forest law-makers, aiming to maximize sustainable wood production in the Amazon forest. Forestry dendrochronology forest modeling minimum cutting diameter Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Full Text Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-83620","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research","associatedPublications":[],"authors":[{"id":2790834,"identity":"eaaf648d-5ddd-47e0-b9f9-6e749eda6a8f","order_by":0,"name":"Aline Canetti","email":"","orcid":"","institution":"Independent forest consultant","correspondingAuthor":false,"prefix":"","firstName":"Aline","middleName":"","lastName":"Canetti","suffix":""},{"id":2790835,"identity":"a7ae3744-2d64-4d3e-9c5f-01cbbe0c3d97","order_by":1,"name":"Evaldo Muñoz Braz","email":"","orcid":"","institution":"Embrapa Florestas","correspondingAuthor":false,"prefix":"","firstName":"Evaldo","middleName":"Muñoz","lastName":"Braz","suffix":""},{"id":2790836,"identity":"f46b56f2-ef6c-4384-9265-bf691ad2cbbd","order_by":2,"name":"Patricia Mattos","email":"data:image/png;base64,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","orcid":"https://orcid.org/0000-0003-4134-8890","institution":"Embrapa Florestas","correspondingAuthor":true,"prefix":"","firstName":"Patricia","middleName":"","lastName":"Mattos","suffix":""},{"id":2790837,"identity":"720c5a49-4e61-48bc-8860-e735211a9d6b","order_by":3,"name":"Renato Olivir Basso","email":"","orcid":"","institution":"Elabore Projetos e Consultoria Florestal","correspondingAuthor":false,"prefix":"","firstName":"Renato","middleName":"Olivir","lastName":"Basso","suffix":""},{"id":2790838,"identity":"16ae5486-8655-4665-91f7-4316ed22da25","order_by":4,"name":"Afonso Figueiredo Filho","email":"","orcid":"","institution":"UNICENTRO: Universidade Estadual do Centro-Oeste","correspondingAuthor":false,"prefix":"","firstName":"Afonso","middleName":"Figueiredo","lastName":"Filho","suffix":""}],"badges":[],"createdAt":"2020-09-25 13:08:10","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-83620/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-83620/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":2734508,"identity":"0cfcb5dc-2cb9-48b0-8d8e-82bb5688f861","added_by":"auto","created_at":"2020-10-01 21:50:50","extension":"png","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":18345,"visible":true,"origin":"","legend":"Scheme showing the methodological process for obtaining the curves of volume increment of the population. The boxes with red outline inform the data source of the column to which the arrows are directed. PDFs = probability density functions; N = number of trees per hectare; dbh = diameter at 1.30 m above ground level; v = volume of individual tree; V = species population volume (m³ ha-1); MAIv = mean annual volume increment; and CAIv = current annual volume increment.","description":"","filename":"Onlinefloatimage1.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage1.Png"},{"id":2734509,"identity":"363e97ba-2797-4a5d-843c-86d5e235d94d","added_by":"auto","created_at":"2020-10-01 21:50:50","extension":"png","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":93716,"visible":true,"origin":"","legend":"Probability density functions with better fitting for Apuleia leiocarpa (A), Erisma uncinatum (B), Hymenolobium excelsum (C) and Trattinnickia burserifolia (D). Dbh = diameter at 1.30 m above ground level (cm); Γ = gamma function; Dcalc. = maximum absolute value between fitted pdf and observed values in each compartment; IR = error index (Reynolds et al., 1988).","description":"","filename":"Onlinefloatimage2.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage2.Png"},{"id":2734510,"identity":"51fbb23d-e8f2-463d-987e-e8585bdc36fc","added_by":"auto","created_at":"2020-10-01 21:50:50","extension":"png","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":64513,"visible":true,"origin":"","legend":"Heigh/dbh models of Apuleia leiocarpa, Erisma uncinatum, Hymenolobium excelsum, and Trattinnickia burserifolia. dbh = diameter at 1.30 m above ground level (cm); β0 and β1 = equation parameters fitted by non-linear regression; Syx% = relative residual standard error (%)","description":"","filename":"Onlinefloatimage3.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage3.Png"},{"id":2734511,"identity":"5fb0910d-810a-4ef0-9479-9fe08708c1af","added_by":"auto","created_at":"2020-10-01 21:50:50","extension":"png","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":43574,"visible":true,"origin":"","legend":"Boxplot of the mean annual periodic increment by diameter class of Apuleia leiocarpa (A), Erisma uncinatum (B), Hymenolobium excelsum (C), and Trattinnickia burserifolia (D). Markers (x) represent the mean increment per diameter class, which were calculated only for the diameter classes with three or more trees. Dbh = diameter at 1.30 m above ground level.","description":"","filename":"Onlinefloatimage4.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage4.Png"},{"id":2734512,"identity":"aa15ddd3-8819-4ba1-b11b-1d363041479b","added_by":"auto","created_at":"2020-10-01 21:50:50","extension":"png","order_by":5,"title":"Figure 5","display":"","copyAsset":false,"role":"figure","size":11455,"visible":true,"origin":"","legend":"Mean passage time by diameter class for Apuleia leiocarpa (A), Erisma uncinatum (B), Hymenolobium excelsum (C), and Trattinnickia burserifolia (D) and their respective tendency lines. Only passage times for diameter classes with three or more trees were considered. Dbh = diameter at 1.30 m above ground level.","description":"","filename":"Onlinefloatimage5.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage5.Png"},{"id":2734513,"identity":"1299d06d-4536-473f-b694-34a664427023","added_by":"auto","created_at":"2020-10-01 21:50:50","extension":"png","order_by":6,"title":"Figure 6","display":"","copyAsset":false,"role":"figure","size":63768,"visible":true,"origin":"","legend":"Accumulated diametric growth equations fitted for Apuleia leiocarpa (A), Erisma uncinatum (B), Hymenolobium excelsum (C), and Trattinnickia burserifolia (D). The growth equations were fitted for the ages represented by three or more samples. Dbh = diameter at 1.30 m above ground level; t = time (years); Syx% = Relative Residual Standard Error (%).","description":"","filename":"Onlinefloatimage6.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage6.Png"},{"id":2734514,"identity":"68e95ffe-b66f-4dc2-9658-28e8aa6fcb45","added_by":"auto","created_at":"2020-10-01 21:50:51","extension":"png","order_by":7,"title":"Figure 7","display":"","copyAsset":false,"role":"figure","size":81037,"visible":true,"origin":"","legend":"Volumetric increment curves (black) and dbh growth equation (red) for Apuleia leiocarpa (A), Erisma uncinatum (B), Hymenolobium excelsum (C), and Trattinnickia burserifolia (D). In the primary y-axis: MAIv = mean annual volumetric increment; CAIv = current annual volumetric increment. On the secondary y-axis: dbh = diameter at 1.30 m above ground level (cm) (growth equation fitted within the measured data range); Edbh = accumulated diameter at 1.30 m above ground level (growth equation outside the measured data range).","description":"","filename":"Onlinefloatimage7.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage7.Png"},{"id":2734515,"identity":"0f53a4a8-03ed-4da4-8ad1-01712f4c9dde","added_by":"auto","created_at":"2020-10-01 21:50:51","extension":"png","order_by":8,"title":"Figure 8","display":"","copyAsset":false,"role":"figure","size":92337,"visible":true,"origin":"","legend":"Volumetric and diametric increment curves for the population of Apuleia leiocarpa (A), Erisma uncinatum (B), Hymenolobium excelsum (C) and Trattinnickia burserifolia (D) (dbh ≥ 20 cm). In the primary y-axis: MAIv = mean annual increment in volume; CAIv = current annual increment in volume. In the secondary y-axis: dbh = diameter at 1.30 m above ground level (cm), obtained from the growth equation.","description":"","filename":"Onlinefloatimage8.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage8.Png"},{"id":2734516,"identity":"06fcd29b-230d-471c-ab64-90218b3e3993","added_by":"auto","created_at":"2020-10-01 21:50:51","extension":"png","order_by":9,"title":"Figure 9","display":"","copyAsset":false,"role":"figure","size":47318,"visible":true,"origin":"","legend":"Annual volume increment by the MCD defined by the population's biological rotation age and different cutting cycles for Apuleia leiocarpa (A), Erisma uncinatum (B), Hymenolobium excelsum (C), and Trattinnickia burserifolia (D).","description":"","filename":"Onlinefloatimage9.Png","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/Onlinefloatimage9.Png"},{"id":13536831,"identity":"5fe5416c-0cf1-4ff3-bcaa-f56f76f914ef","added_by":"auto","created_at":"2021-09-17 01:33:52","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2021521,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1_covered.pdf"},{"id":2734517,"identity":"d4a02f1a-3a74-4fa5-bfb6-1810f3d24117","added_by":"auto","created_at":"2020-10-01 21:51:04","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2134779,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1_stamped.pdf"},{"id":2734507,"identity":"1fa7733f-eccd-4fb3-96fd-0a03e13ef15f","added_by":"auto","created_at":"2020-10-01 21:50:49","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1742828,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-83620/v1/manuscript.pdf"}],"financialInterests":"","formattedTitle":"\u003cp\u003eStrategies to Maximize the Wood Production in Amazon Forest\u003c/p\u003e","fulltext":[{"header":"Full Text","content":"\u003cp\u003eThis preprint is available for \u003ca href='/article/rs-83620/latest.pdf' target='_blank'\u003edownload as a PDF\u003c/a\u003e.\u003c/p\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"dendrochronology, forest modeling, minimum cutting diameter","lastPublishedDoi":"10.21203/rs.3.rs-83620/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-83620/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eBackground\u003c/p\u003e\u003cp\u003eThis study aimed to develop a procedure to determine which logging diameter would achieve optimal wood production by species, aiming to support sustainable management of the Amazon forest. 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