Forest Ecosystems最新文献

{"title":"Sustaining forest biodiversity: Exploring the effect of long-term natural disturbance dynamics on contemporary lichen communities in primary forest ecosystems","authors":"Rhiannon Gloor ,&nbsp;Marek Svitok ,&nbsp;Martin Mikoláš ,&nbsp;Jeňýk Hofmeister ,&nbsp;Josef Halda ,&nbsp;Pavel Janda ,&nbsp;Francesco Maria Sabatini ,&nbsp;Lucie Zemanová ,&nbsp;Arne Buechling ,&nbsp;Daniel Kozák ,&nbsp;Matej Ferenčík ,&nbsp;Michal Frankovič ,&nbsp;Martin Dušátko ,&nbsp;Miroslav Svoboda","doi":"10.1016/j.fecs.2024.100214","DOIUrl":"https://doi.org/10.1016/j.fecs.2024.100214","url":null,"abstract":"<div><p>In this era of biodiversity loss and climate change, quantifying the impacts of natural disturbance on forest communities is imperative to improve biodiversity conservation efforts. Epiphytic and epixylic lichens are effective forest quality bioindicators, as they are generally long-lived organisms supported by continuity of specific forest structures and their associated microclimatic features. However, how lichen communities respond to the effects of fluctuating historical disturbances remains unclear. Using a dendrochronological approach, this study investigates how natural disturbance dynamics indirectly influence various lichen community metrics in some of Europe's best-preserved primary mixed-beech forests. Mixed modelling revealed that natural historical disturbance processes have decades-long effects on forest structural attributes, which had both congruent and divergent impacts on lichen community richness and composition. Total species richness indirectly benefited from both historical and recent higher-severity disturbances via increased standing dead tree basal area and canopy openness respectively - likely through the presence of both pioneer and late-successional species associated with these conditions. Red-listed species richness showed a dependence on habitat continuity (old trees), and increased with disturbance-related structures (standing dead trees) whilst simultaneously benefiting from periods without severe disturbance events (old trees and reduced deadwood volume). However, if the disturbance occurred over a century in the past, no substantial effect on forest structure was detected. Therefore, while disturbance-mediated forest structures can promote overall richness, threatened species appear vulnerable to more severe disturbance events – a concern, as disturbances are predicted to intensify with climate change. Additionally, the high number of threatened species found reinforce the critical role of primary forest structural attributes for biodiversity maintenance. Hence, we recommend a landscape-scale conservation approach encompassing forest patches in different successional stages to support diverse lichen communities, and the consideration of long-term disturbance dynamics in forest conservation efforts, as they provide critical insights for safeguarding biodiversity in our changing world.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000502/pdfft?md5=82cbc0ffc09862c25579ea683beeba98&pid=1-s2.0-S2197562024000502-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141324751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of habitat configuration on biodiversity along gradients of forest cover on the Swiss Plateau","authors":"","doi":"10.1016/j.fecs.2024.100223","DOIUrl":"10.1016/j.fecs.2024.100223","url":null,"abstract":"<div><p>The negative effects of habitat loss on biodiversity are undisputed, while the effect of habitat configuration, i.e., the spatial arrangement of habitat area, has been debated for decades. To develop a more comprehensive understanding, it is important to know when and how configuration matters. In this study, we tested whether forest configuration influences the richness of species in groups characterized by varying shade tolerance in different ways and how such effects are related to habitat amount (i.e., the percentage of forest cover) at the landscape scale. Based on 104 survey plots (each measuring 1 ​km²) of vascular plants on the Swiss Plateau, and using two statistical approaches (i.e., multiple regression and path analysis), we modeled the effects of habitat amount and configuration (measured as number of forest patches, total edge length, and proximity index) across all the plots and separately for three habitat amount classes: &lt;10%, 10%–30%, and &gt;30% forest cover. When we modeled all plots together, we found that, after controlling for habitat amount, the forest configuration significantly affected species richness. When we considered the different habitat amount classes separately, most of the significant effects of habitat configuration on species richness occurred only for habitat amounts of &lt;10% forest cover. Additionally, the response to forest configuration differed among species with different shade tolerances. When forest area was &lt;10%, the effects of the number of patches and the total edge length on the species richness of light-demanding forest species were greater than the effect of habitat amount, whereas neither configuration metric affected the richness of shade-tolerant species. In conclusion, our findings highlight the importance of configuration in landscapes with a small amount of habitat. At the same time, they demonstrate that considering the confounding factors (e.g. species traits) is important for understanding the effects of forest configuration on biodiversity and that generalizations remain a challenge for landscape ecology.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000599/pdfft?md5=4a9e9e167b7ef3392cdd9fe6990f04f5&pid=1-s2.0-S2197562024000599-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How forest age impacts on net primary productivity: Insights from future multi-scenarios","authors":"","doi":"10.1016/j.fecs.2024.100228","DOIUrl":"10.1016/j.fecs.2024.100228","url":null,"abstract":"<div><p>Forest net primary productivity (NPP) constitutes a key flux within the terrestrial ecosystem carbon cycle and serves as a significant indicator of the forests carbon sequestration capacity, which is closely related to forest age. Despite its significance, the impact of forest age on NPP is often ignored in future NPP projections. Here, we mapped forest age in Hunan Province at a 30-m resolution utilizing a combination of Landsat time series stack (LTSS), national forest inventory (NFI) data, and the relationships between height and age. Subsequently, NPP was derived from NFI data and the relationships between NPP and age was built for various forest types. Then forest NPP was predicted based on the NPP-age relationships under three future scenarios, assessing the impact of forest age on NPP. Our findings reveal substantial variations in forest NPP in Hunan Province under three future scenarios: under the age-only scenario, NPP peaks in 2041 (133.56 ​Tg ​C·yr⁻¹), while NPP peaks three years later in 2044 (141.14 ​Tg ​C·yr⁻¹) under the natural development scenario. The maximum afforestation scenario exhibits the most rapid increase in NPP, with peaking in 2049 (197.95 ​Tg ​C·yr⁻¹). However, with the aging of the forest, NPP is projected to then decrease by 7.54%, 6.07%, and 7.47% in 2060, and 20.05%, 19.74%, and 28.38% in 2100, respectively, compared to their peaks under the three scenarios. This indicates that forest NPP will continue to decline soon. Controlling the age structure of forests through selective logging, afforestation and reforestation, and encouraging natural regeneration after disturbance could mitigate this declining trend in forest NPP, but implications of these measures on the full forest carbon balance remain to be studied. Insights from the future multi-scenarios are expected to provide data to support sustainable forest management and national policy development, which will inform the achievement of carbon neutrality goals by 2060.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000642/pdfft?md5=64049951f98c663500f713a4f0ceb52d&pid=1-s2.0-S2197562024000642-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing wood efficiency through comprehensive wood flow analysis: Methodology and strategic insights","authors":"Ruisheng Wang,&nbsp;Peer Haller","doi":"10.1016/j.fecs.2024.100179","DOIUrl":"https://doi.org/10.1016/j.fecs.2024.100179","url":null,"abstract":"<div><p>Wood, an essential natural resource in human civilization, remains widely used despite advances in technology and material substitution. The surge in greenhouse gas emissions and environmental concerns accentuates the need for optimizing wood utilization. Material flow analysis is a powerful tool for tracking material flows and stocks, aiding resource management and environmental decision-making. However, the full extent of its methodological dimensions, particularly within the context of the wood supply chain, remains relatively unexplored. In this study, we delve into the existing literature on wood flow analysis, discussing its primary objectives, materials involved, temporal and spatial scales, data sources, units, and conversion factors. Additionally, data uncertainty, data reconciliation and crucial assumptions in material flow analysis are highlighted in this paper. Key findings reveal the significance of wood cascading and substitution effects by replacing non-wood materials, where they can reduce greenhouse gas emissions more than the natural carbon sink of forests and wood products. The immediate impact of short-term wood cascading might not be as robust as the substitution effect, with energy substitution showcasing better results than material substitution. However, it's crucial to note that these conclusions could experience significant reversal from a long-term and global perspective. Strategies for improving wood efficiency involve maximizing material use, advancing construction technologies, extending product lifespans, promoting cascade use, and optimizing energy recovery processes. The study underscores the need for standardized approaches in wood flow analysis and emphasizes the potential of wood efficiency strategies in addressing environmental challenges.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000150/pdfft?md5=cf4e5abacda2569b45c305567575c60e&pid=1-s2.0-S2197562024000150-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140052786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Book review “Wattles: Australian Acacia species around the world” by David M. Richardson, Johannes J. Le Roux and Elizabete Marchante","authors":"Klaus von Gadow","doi":"10.1016/j.fecs.2024.100175","DOIUrl":"10.1016/j.fecs.2024.100175","url":null,"abstract":"","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000113/pdfft?md5=2b271ac32d8c8c7e2adbaff274b261ba&pid=1-s2.0-S2197562024000113-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139816683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling the effect of stand and site characteristics on the probability of mistletoe infestation in Scots pine stands using remote sensing data","authors":"Luiza Tymińska-Czabańska ,&nbsp;Piotr Janiec ,&nbsp;Paweł Hawryło ,&nbsp;Jacek Ślopek ,&nbsp;Anna Zielonka ,&nbsp;Paweł Netzel ,&nbsp;Daniel Janczyk ,&nbsp;Jarosław Socha","doi":"10.1016/j.fecs.2024.100191","DOIUrl":"https://doi.org/10.1016/j.fecs.2024.100191","url":null,"abstract":"<div><p>Over the past decade, the presence of mistletoe (<em>Viscum album</em> ssp. <em>austriacum</em>) in Scots pine stands has increased in many European countries. Understanding the factors that influence the occurrence of mistletoe in stands is key to making appropriate forest management decisions to limit damage and prevent the spread of mistletoe in the future. Therefore, the main objective of this study was to determine the probability of mistletoe occurrence in Scots pine stands in relation to stand-related endogenous factors such as age, top height, and stand density, as well as topographic and edaphic factors. We used unmanned aerial vehicle (UAV) imagery from 2,247 stands to detect mistletoe in Scots pine stands, while majority stand and site characteristics were calculated from airborne laser scanning (ALS) data. Information on stand age and site type from the State Forest database were also used. We found that mistletoe infestation in Scots pine stands is influenced by stand and site characteristics. We documented that the densest, tallest, and oldest stands were more susceptible to mistletoe infestation. Site type and specific microsite conditions associated with topography were also important factors driving mistletoe occurrence. In addition, climatic water balance was a significant factor in increasing the probability of mistletoe occurrence, which is important in the context of predicted temperature increases associated with climate change. Our results are important for better understanding patterns of mistletoe infestation and ecosystem functioning under climate change. In an era of climate change and technological development, the use of remote sensing methods to determine the risk of mistletoe infestation can be a very useful tool for managing forest ecosystems to maintain forest sustainability and prevent forest disturbance.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000277/pdfft?md5=e5a860ba74b8e5598ac54699825376b6&pid=1-s2.0-S2197562024000277-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140645876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting carbon storage of mixed broadleaf forests based on the finite mixture model incorporating stand factors, site quality, and aridity index","authors":"Yanlin Wang ,&nbsp;Dongzhi Wang ,&nbsp;Dongyan Zhang ,&nbsp;Qiang Liu ,&nbsp;Yongning Li","doi":"10.1016/j.fecs.2024.100189","DOIUrl":"https://doi.org/10.1016/j.fecs.2024.100189","url":null,"abstract":"<div><p>The diameter distribution function (DDF) is a crucial tool for accurately predicting stand carbon storage (CS). The current key issue, however, is how to construct a high-precision DDF based on stand factors, site quality, and aridity index to predict stand CS in multi-species mixed forests with complex structures. This study used data from 70 survey plots for mixed broadleaf <em>Populus davidiana</em> and <em>Betula platyphylla</em> forests in the Mulan Rangeland State Forest, Hebei Province, China, to construct the DDF based on maximum likelihood estimation and finite mixture model (FMM). Ordinary least squares (OLS), linear seemingly unrelated regression (LSUR), and back propagation neural network (BPNN) were used to investigate the influences of stand factors, site quality, and aridity index on the shape and scale parameters of DDF and predicted stand CS of mixed broadleaf forests. The results showed that FMM accurately described the stand-level diameter distribution of the mixed <em>P. davidiana</em> and <em>B. platyphylla</em> forests; whereas the Weibull function constructed by MLE was more accurate in describing species-level diameter distribution. The combined variable of quadratic mean diameter (<em>D</em>_q), stand basal area (BA), and site quality improved the accuracy of the shape parameter models of FMM; the combined variable of <em>D</em>_q, BA, and De Martonne aridity index improved the accuracy of the scale parameter models. Compared to OLS and LSUR, the BPNN had higher accuracy in the re-parameterization process of FMM. OLS, LSUR, and BPNN overestimated the CS of <em>P. davidiana</em> but underestimated the CS of <em>B. platyphylla</em> in the large diameter classes (DBH ≥18 ​cm). BPNN accurately estimated stand- and species-level CS, but it was more suitable for estimating stand-level CS compared to species-level CS, thereby providing a scientific basis for the optimization of stand structure and assessment of carbon sequestration capacity in mixed broadleaf forests.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000253/pdfft?md5=7e93c7cb169563188fef334cd34424ca&pid=1-s2.0-S2197562024000253-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140339606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atmospheric nitrogen deposition affects forest plant and soil system carbon:nitrogen:phosphorus stoichiometric flexibility: A meta-analysis","authors":"Xiyan Jiang ,&nbsp;Xiaojing Wang ,&nbsp;Yaqi Qiao ,&nbsp;Yi Cao ,&nbsp;Yan Jiao ,&nbsp;An Yang ,&nbsp;Mengzhou Liu ,&nbsp;Lei Ma ,&nbsp;Mengya Song ,&nbsp;Shenglei Fu","doi":"10.1016/j.fecs.2024.100192","DOIUrl":"https://doi.org/10.1016/j.fecs.2024.100192","url":null,"abstract":"<div><h3>Background</h3><p>Nitrogen (N) deposition affects forest stoichiometric flexibility through changing soil nutrient availability to influence plant uptake. However, the effect of N deposition on the flexibility of carbon (C), N, and phosphorus (P) in forest plant-soil-microbe systems remains unclear.</p></div><div><h3>Methods</h3><p>We conducted a meta-analysis based on 751 pairs of observations to evaluate the responses of plant, soil and microbial biomass C, N and P nutrients and stoichiometry to N addition in different N intensity (0–50, 50–100, &gt;100 ​kg⋅ha⁻¹⋅year⁻¹ of N), duration (0–5, &gt;5 year), method (understory, canopy), and matter (ammonium N, nitrate N, organic N, mixed N).</p></div><div><h3>Results</h3><p>N addition significantly increased plant N:P (leaf: 14.98%, root: 13.29%), plant C:P (leaf: 6.8%, root: 25.44%), soil N:P (13.94%), soil C:P (10.86%), microbial biomass N:P (23.58%), microbial biomass C:P (12.62%), but reduced plant C:N (leaf: 6.49%, root: 9.02%). Furthermore, plant C:N:P stoichiometry changed significantly under short-term N inputs, while soil and microorganisms changed drastically under high N addition. Canopy N addition primarily affected plant C:N:P stoichiometry through altering plant N content, while understory N inputs altered more by influencing soil C and P content. Organic N significantly influenced plant and soil C:N and C:P, while ammonia N changed plant N:P. Plant C:P and soil C:N were strongly correlated with mean annual precipitation (MAT), and the C:N:P stoichiometric flexibility in soil and plant under N addition connected with soil depth. Besides, N addition decoupled the correlations between soil microorganisms and the plant.</p></div><div><h3>Conclusions</h3><p>N addition significantly increased the C:P and N:P in soil, plant, and microbial biomass, reducing plant C:N, and aggravated forest P limitations. Significantly, these impacts were contingent on climate types, soil layers, and N input forms. The findings enhance our comprehension of the plant-soil system nutrient cycling mechanisms in forest ecosystems and plant strategy responses to N deposition.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000289/pdfft?md5=e75c51c61911b9313175ac66ea637fc6&pid=1-s2.0-S2197562024000289-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140639385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disrupted connectivity within a metapopulation of a wind-pollinated declining conifer, Taxus baccata L.","authors":"","doi":"10.1016/j.fecs.2024.100240","DOIUrl":"10.1016/j.fecs.2024.100240","url":null,"abstract":"<div><p>Population connectivity through seed and pollen dispersal determines the genetic diversity, adaptive potential, and demography of plant metapopulations. In wind-pollinated trees, population connectivity is typically maintained by long-distance pollen flow, counteracting the genetic differentiation generated by drift and restricted seed dispersal. Although strong population fragmentation is theoretically expected to disrupt connectivity in forest trees, empirical evidence remains scarce and inconclusive. We investigated contemporary connectivity within a network of small remnant populations of a declining conifer (<em>Taxus baccata</em> L.), which have been hypothesized to be largely isolated from each other. We tested this hypothesis using molecular data for adult trees and naturally recruited seedlings from all known remnants across a fragmented landscape spanning a length of 20 ​km, and a specifically designed statistical approach to quantify contemporary pollen and seed migration rates between populations. We additionally assessed dispersal potential using a spatially explicit parentage analysis to estimate seed and pollen dispersal kernels within one of the remnants. Estimated pairwise migration rates between populations were barely detectable for seeds, while they were larger (up to 1.1%) and significant for pollen. Both seed and pollen migration rates decreased with geographic distance between populations, more steeply in the case of pollen migration. According to parentage-based dispersal kernels, 51.8% of seeds and 11.4% of pollen travel less than 25 ​m, whereas 0.2% of seeds and 36.1% of pollen travel more than 250 ​m from a source tree. In addition, 1.2% of pollen can travel more than 2.5 ​km. We showed that strong present-day population fragmentation, with separation distances over a few kilometers between small fragments, can substantially limit the connectivity of a wind-pollinated declining tree, leading to low pollen-mediated contemporary gene flow and null or virtually null demographic connectivity via seed dispersal.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000769/pdfft?md5=219d0a4115284db7075bec6b9d92f5fc&pid=1-s2.0-S2197562024000769-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142088814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bark biomass and nutrient concentrations in tropical secondary forest trees of Malaysia","authors":"","doi":"10.1016/j.fecs.2024.100242","DOIUrl":"10.1016/j.fecs.2024.100242","url":null,"abstract":"<div><p>Given the high-level physiological functions and nutrient concentrations of bark that cover the entire trunks of huge trees, research into bark nutrient traits and the development of models that estimate the bark biomass of tropical trees is essential when it is sought to understand forest nutrient cycling and tree ecological traits. This study investigated the concentrations of six bark nutrients (nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sodium (Na)) by individual tree size and the soil nutrient concentrations for two major pioneer species (<em>Macaranga gigantea</em> and <em>M</em>. <em>hosei</em>) of Malaysia. To estimate bark biomass, allometric equations using tree diameter, height, and crown diameter were developed by combining previous data from adjacent forests with the present data. We found no significant relationship between tree size and most bark nutrient concentrations, though all nutrient concentrations of the two pioneer trees were significantly higher than those of primary forest tree species. Surprisingly, no relationship was found between the soil and bark nutrient concentrations for either species. All the size parameters used in the allometric equations accurately estimated bark biomass. There were no differences in equations between the two species when diameter served as an explanatory variable, but differences were apparent when height and crown diameter were so used. A comparison of allometric equations that yielded the bark biomasses of different types of forest showed that the bark biomass of the tropical secondary forest trees was less than half of that of tropical dry forest trees of the same diameter. Thus, the use of inappropriate equations and nutrient concentrations increases the possibility of serious errors in estimating bark biomass and forest nutrient cycles.</p></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2197562024000782/pdfft?md5=8ae00d13604b258fc24a9e3f7aac755f&pid=1-s2.0-S2197562024000782-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142129470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}