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Advances in Forestry Science
Number of Followers: 5

This is an Open Access Journal

Open Access journal
ISSN (Print) 2357-8181 - ISSN (Online) 2357-8181
Published by Universidade Federal de Mato Grosso (UFMT)

[15 journals]

Diagnosis of licensing processes submitted to the municipal secretariat of
Rorainópolis, RR between 2017 and 2020
- Authors: Weslley Wilker Corrêa Morais, Fernanda da Rocha Pereira, Janice Bittencourt Facco Morais
  Abstract: : This work aims to obtain information on the processes and concessions of environmental licensing carried out throughout the city of Rorainópolis, RR, between the years 2017 to 2020. The method used to achieve this objective was to carry out a survey of data on the environmental processes carried out at the Municipal Environmental Secretariat of Rorainópolis. The information was acquired from the physical collection and from the environment agency's electronic database. All information was attached in a digital spreadsheet and from these data were performed as analyzes and interpretations. Through the results of this work it was possible to verify: a soil Use and Occupation Certificate (CUOS) and a Simplified Environmental License (LAS) were the environmental procedures most carried out in the municipal secretariat; as for the duration of the processes, more than 80% of the processes were processed in up to one week, for both CUOS and LAS; The Operating License (LO) stands out for being considered more complex, where 43.12% of the processes remained in the department for more than a month; the agrarian/forest potential of the municipality of Rorainópolis, as most of the simplified concessions analyzed came from activities related to agriculture, livestock and forestry; the occurrence of the annual increase in the number of licenses issued by the municipal secretariat demonstrating the municipal development.
  PubDate: 2025-01-06
  DOI: 10.34062/afs.v11i4.14983
  Issue No: Vol. 11, No. 4 (2025)
Occurrence and habitat preference of wildanimal in T. A. Afolayan wildlife
park, Nigeria
- Authors: Bukola Omotomilola Adetola, Oluwatobi Emmanuel Olaniyi, Adelayo Sunday Abifarin
  Abstract: Adequate knowledge of the occurrence and habitat preference of wild fauna species in an ecosystem is critical for taking stock of what is available and improving its effective management. This study was conducted at the T.A. Afolayan Wildlife Park in Federal University of Technology Akure, Nigeria. Data on population and species of animal in relation to the habitat where they are found was obtained using Camera trap, direct and indirect methods along the established transect in the park. Vegetation data obtained were analyzed using descriptive statistics and Shannon Werner Diversity Index (H). Result showed that six species of wild animals were observed which include tree squirrel (Paraxerus cepapi), maxwell duiker (Philantomba maxwellii), bushbuck (Tragelaphus scriptus), black cobra (Naja nigricollis), flat-headed cusimanse (Crossarchus platycephalus) and fresh water turtle (Pelusios species). Tree squirrel has a higher naïve occupancy (NO=1.00) while fresh water turtle the lowest naïve occupancy (NO=0.14). A total of 36 tree species belonging to 16 families were identified with Diversity index (H1) of 2.68, also Diversity index of 2.56 and 2.00 were recorded for open secondary forest and rock outcrop vegetation respectively. Maxwell duiker and bushbuck were encountered along the open secondary forest and degraded vegetation, tree squirrel were found in open secondary forest and the water turtle were found in Rock outcrop. The study has provided insight on the distribution of wild animal species in the park while recommending that the University administration should be proactive in the management of wildlife resources in their conservation area.
  PubDate: 2025-01-06
  DOI: 10.34062/afs.v11i4.15783
  Issue No: Vol. 11, No. 4 (2025)
Fiber properties of Acacia mangium and Calophyllum brasiliense woods for
papermaking: a comparative study
- Authors: Eduardo Longui, Israel Luiz Lima, Mauricio Ranzini, Jurai de Andrade Barbosa, Sonia Regina Godoi Campião, Solange Caldana da Costa Caldeira, Patrick Ayrivie Assumpção
  Abstract: This study analyzed the fiber properties of 24 trees, 12 of which were Acacia mangium and 12 Calophyllum brasiliense, with the aim of evaluating the suitability of these species for paper production.We determine wood density, fiber features and fiber properties for the purpose of papermaking. In general, our results showed that both woods have medium quality for papermaking; however, C. brasiliense has a slight advantage by the greater number of properties classified as medium based on the reference values for fiber properties and the average values for each species. For flexibility coefficient, both species are classified as medium quality, falling within the range of 0.50 to 0.65. Wall fraction is also classified as medium quality, falling within the range of 0.50 to 0.35. Runkel ratio values group both species as good for paper (0.50 - 1.00). Slenderness ratio ranks A. mangium (0.62) in group III, 0.50 - 1.00, as good for paper, while C. brasiliense (0.43) is ranked in group II, 0.25 - 0.50, as very good for paper. According to Luce’s shape factor, C. brasiliense is good for papermaking with a value below 0.5. Overall, both species were found to be suitable for paper manufacturing, demonstrating strong potential for this industrial application.
  PubDate: 2025-01-06
  DOI: 10.34062/afs.v11i4.17282
  Issue No: Vol. 11, No. 4 (2025)
Analysis of urban forest and available areas for tree planting in public
squares in the municipality of Rorainópolis, RR, Brazil
- Authors: Deborah Kelly Santos de Santana, Weslley Wilker Corrêa Morais, Richard Wellington Silva Rodrigues Meira, Sayuri Takizana Dias de Souza, Marlon Danilo Macêdo
  Abstract: With the increase in the urban population, there is an increase in the demand for green areas for outdoor recreation, challenging managers to promote adequate spaces that benefit ecosystems and human health. Therefore, the first step in planning is the diagnosis of the circumstances in which the squares are found. With that, the objective of this study was to evaluate the afforestation of the 7 squares in the seat of the municipality of Rorainópolis-RR. Identification, inventory, phytosociological and phytosanitary analyzes of tree individuals were carried out, measurement of available areas for the implantation of afforestation, with afforestation and calculations of available areas and the deficit in the number of trees. During the visits, it was verified that in all the analyzed squares there were nonconformities, such as: acts of vandalism and lack of preventive maintenance in the arboreal components and in the physical structure. In the 7 squares, 168 trees were observed, distributed in 12 families and 16 species. The main problems found in the afforestation of these squares are related to the lack of maintenance, low species richness, with only 2 species representing 72.61% of the inventoried trees, namely Ipê and Sombreiro, with respectively 66 and 56 individuals. Based on the areas available for tree planting, it was found that the squares in the city of Rorainópolis have, for the most part, a high deficit of urban afforestation, with poorly distributed and insufficient vegetation cover.
  PubDate: 2025-01-06
  DOI: 10.34062/afs.v11i4.17494
  Issue No: Vol. 11, No. 4 (2025)
A model for roundwood of planted forests
- Authors: Thomaz Correa e Castro da Costa, Luiz Fernando França
  Abstract: Forest harvesting is quantified in stereo volume. Therefore, there is no information on the types and quantities of products that can be extracted from trees. Information on timber products, as well as their evaluation, can assist forestry producers in trading. Another purpose is to provide support information for companies that purchase forests, such as the amount of most sold pieces and the amount of wood residue. In this work, a model to segment trees into roundwood pieces in the dimensions provided by the user was developed and validated. The required data are the diameter at breast height (DBH), total height of the trees, taper data, and the diameter and length dimensions of the roundwood pieces selected by the user. The validation was performed on the harvest of 8-year-old eucalyptus clone I224 and VM1, in an ILPF system and monoculture. The number of errors greater than 20% for the dimensions of pieces selected and calculated by the algorithm did not exceed 8% of the frequency distribution.
  PubDate: 2025-01-06
  DOI: 10.34062/afs.v11i4.17558
  Issue No: Vol. 11, No. 4 (2025)
Dormancy and overcoming treatments in seeds of forest species
- Authors: Lorena Passos de Souza, Andrea Vita Reis Mendonça, Dráuzio Correia Gama, Arthur Bernardes Cecílio Filho, Manuela Oliveira de Souza
  Abstract: Dormancy as is the condition in which viable seeds do not germinate even under favorable environmental conditions. It is noticed in the literature that there are divergences regarding the presence or not of dormancy in seeds of forest species and also about the type of dormancy and the treatment to be carried out when it is present. The objective of this study was, by means of a literature review, to report disagreements regarding the existence and type of dormancy in the seeds of 85 native and exotic species of the flora of Brazil and to present inconclusive cases that require evaluation by the scientific community. For this, a bibliographic survey was carried out on studies regarding the dormancy of seeds of these species. The literature review gathered 249 articles, with which seed dormancy was ratified and not ratified in 78 and 17% of the 85 species. For 5% of the studied species, it was not possible to state whether they were dormant or not due to the scarcity of information in the literature. In species with dormancy, the predominant type is physical, with mechanical and chemical scarification techniques being used in 41.5 and 31%, respectively, to overcome dormancy. The present study found and signaled the need for further studies to clarify the existence of dormancy in certain species, as well as the type of dormancy and the adoption of treatment to overcome it.
  PubDate: 2025-01-06
  DOI: 10.34062/afs.v11i4.17393
  Issue No: Vol. 11, No. 4 (2025)
Schedules drying based score defects or tropical species
- Authors: Gilson Roberto Vasconcelos dos Santos
  Abstract: Knowledge of the heterogeneity of forest species is important for the drying process. The drastic drying test methodology at 100o C was used on samples of 10 x 50 x 100 mm, relating defects such as cracking to the drying speed in samples of 17 forest species from the Amazon region, obtaining at the end of the test the initial temperature, final temperature and drying potential, necessary for the preparation of drying programs. The results presented values of drying parameters with the possibility of dividing the species into four groups, by similarity of drying speed and development of defects, equal to or close to, above and below fiber saturation point (FSP).
  Keywords: Original Article
  PubDate: 2025-03-31
  DOI: 10.34062/jnsxyj45
Richness of the Cerrado in Conservation Units: an analysis of tree
diversity and structure in the Chapada dos Guimarães National Park - Mato
Grosso
- Authors: Leonardo Lopes da Rocha, Leandro Dias Rodrigues de Oliveira, Matheus Marcos Xavirer de Souza, Ronaldo Drehser, Jaçanan Eloisa de Freitas Milani, José Guilherme Roquette, Cyro Matheus Cometti Favalessa
  Abstract: Anthropogenic actions have significantly impacted the Cerrado, making floristic and phytosociological studies important to understand and describe the diversity of tree species in the biome. The objective of the research was to describe the horizontal structure and calculate the floristic indices Jentsch's Mixture Quotient (QM), Simpson's Index (S'), Shannon's Index (H'), Pielou's Evenness Index (J') and Sorensen similarity (SO), through a forest inventory with sampling sufficiency of 10 sampling units in an area of 138.38 ha. A total of 79 species from 37 families were observed, with the highest importance value for the species Tachigali vulgaris. The diametric distribution pattern verified was negative exponential (“inverted J”). Shannon's diversity index (H') and Pielou's evenness index (J') obtained results of 3.63 and 0.83 respectively. 92.06% of individuals are part of classes 1 and 2, measuring a maximum of 15 cm in diameter, 38 species were classified as zoochorous and 28 as anemochorous. The absence of fire records can contribute to the maintenance of species diversity.
  Keywords: Original Article
  PubDate: 2025-03-31
  DOI: 10.34062/1y8zqs63
Quality of Pinus taeda L. seedlings in response to fertilization with
controlled-release fertilizers
- Authors: Andressa Vasconcelos Flores, Elis Borcioni, Igor Marcelo Tacheviski
  Abstract: There are several brands of controlled-release fertilizers available on the market, and it is essential to verify their efficiency in producing quality forest seedlings in less time and at a reduced cost. Therefore, the present work aimed to evaluate the use of different controlled-release fertilizers in the production of Pinus taeda seedlings, evaluating their influence on the quality of the seedlings produced. The experimental design used was completely randomized, using the following fertilizers: Osmocote® 18-05-09 (5M) and Basacote® 16-08-12 (+2) (6M). For the composition of the treatments, the following doses were used: T0 - 2.0 kg of Osmocote® + 2.0 kg of Basacote®; T1 - 4.0 kg of Osmocote®; T2 - 4.0 kg of Basacote®; T3 – 3.0 kg of Osmocote® + 1.0 kg of Basacote®; per m3 of substrate. The following were measured: shoot height, root diameter, robustness quotient, shoot dry mass, root dry mass, total dry mass and Dickson quality index. For the production of P. taeda seedlings with a good quality standard, it is recommended to apply 3.0 kg of Osmocote® + 1.0 kg of Basacote® per m3 of substrate. All parameters evaluated were influenced by the fertilizers used.
  Keywords: Original Article
  PubDate: 2025-03-31
  DOI: 10.34062/2a3tze40
Wood welding rotational of Brazilian native species
- Authors: Eduardo Schneid, Adriel do Vale Barbosa, Lucas Dias Alves
  Abstract: Wood welding is a relatively new technique in Brazil, especially when using native wood species. This research aims to determine the shear strength of joints made using the friction stir welding process with two native Brazilian species: Hymenaea courbaril L. (jatobá) and Trattinnickia burserifolia Mart. (amescla). Ten specimens were divided into two groups: five with welded dowels and five with glued dowels. The dowels were made of jatobá wood and the pieces were made of amescla wood. After welding and gluing the dowels, the shear strength of the joints was determined by mechanical tests. The taper of the dowels was also measured in the specimens with welded dowels. The results showed that the mean shear strength of the glued dowel joints was 4.878 MPa, while the mean shear strength of the welded dowel joints was 1.718 MPa. The mean taper of the dowels was 6.20%. The welded region of the dowel had a dark color due to the increase in temperature at the piece/dowel interface during the welding process. It was concluded that welding occurred between the pieces and dowels, demonstrating the potential of the technique using native wood species.
  Keywords: Original Article
  PubDate: 2025-03-31
  DOI: 10.34062/4vyawc16
Apparent density of wood determined by two different methods in Pinus
caribaea var. hondurensis and Pinus tecunumanii
- Authors: Israel Luiz de Lima, Ivanka Rosada de Oliveira, Juraci de Andrade Barbosa, Maurício Ranzini, Miguel Luiz Menezes Freitas, Eduardo Luiz Longui, Mário Tommasiello Filho
  Pages: 2158 - 2167
  Abstract: The aim of this study was to compare the apparent wood density obtained by two different methods in populations of Pinus caribaea var. hondurensis and Pinus tecunumanii, both 50 years old, located in Itirapina, SP. For this purpose, five trees of each species were selected. From each tree, two discs of 7 cm thickness were removed in the diameter at breast height (DBH) region. To determine the apparent density by the gravimetric method, samples were collected at five different positions, from pith to bark, on one of the discs. The other disc was used to obtain the radial profile of apparent wood density, using the X-ray Densitometry method. The results revealed that the apparent density did not differ significantly between the species. Variations in apparent density were observed from pith to bark in the trunks of both species, with a tendency of increasing density towards the bark. Furthermore, positive correlations between radial position and apparent density were observed in both species. The methodologies used to obtain the apparent density showed a high correlation between them, allowing for estimates with good precision. It is worth noting that the apparent density obtained by the gravimetric method showed significantly higher values than the X-ray densitometry method.
  Keywords: Original Article
  PubDate: 2024-06-12
  DOI: 10.34062/afs.v11i1.16630
Temporal evolution of deforestation in the Xingu River Watershed between
2008 to 2020
- Authors: Antonio Henrique Cordeiro Ramalho, Fernanda Dalfiôr Maffioletti, Leonardo Duarte Biazatti, Gabriel Severo Carvalho, Marcos Antoni Antoni Pinheiro da Silva, Kassiel Trajano da Luz, Janismara Pereira Amorim, Eduardo Teixeira Neto, Marcello Matos dos Santos
  Pages: 2168 - 2175
  Abstract: Anthropic activities that alter land cover patterns in Watersheds, such as deforestation, affect the food and sanitary security of the population. Thus, the objective of this study was to develop a quantitative analysis of the temporal evolution of deforestation in the Xingu River Watershed between the years 2008 and 2020. To achieve this, the methodology was organized into the following steps: Database construction (Xingu River Watershed boundaries, deforested areas, and Land Use and Land Cover); Data preprocessing; Analysis of the temporal evolution of deforestation; and Quantitative analysis of land cover change in the deforested areas. It became evident that deforestation did not exhibit a standardized behavior, due to the large proportion of deforested areas in 2008 and the abrupt reduction in 2012. Furthermore, the deforestation in 2012, 2016, and 2020 resulted in greater conversion of native forests into pasture than the regeneration of these areas. Therefore, it can be concluded that 2008 had the highest deforestation rate, due to the increase in soybean prices, and that 2012 had the lowest rates due to the implementation of environmental policies, highlighting the relationship between environmental policies and the seasonality of commodity prices with deforestation rates. It was also concluded that the main destination for the deforested areas has been pastureland for livestock, and a viable solution to identify and punish offenders, as well as support small-scale producers and recover areas devastated by deforestation, is land regularization.
  Keywords: Original Article
  PubDate: 2024-06-12
  DOI: 10.34062/afs.v11i1.15658
Quality of wood waste stored in sawmills in the Amazon for energy purposes
- Authors: Weslley Wilker Corrêa Morais, José Otávio Brito, Artur Queiroz Lana, Carlos Rogério Andrade, Ananias Francisco Dias Júnior, Janice
  Pages: 2176 - 2182
  Abstract: Storage of wood waste exposed to atmosphere may alter the quality of the Fine Wastes of Sawed Wood (RFDM). Thus, the objective was to evaluate the physical, chemical and energetic characteristics of Amazonian RFDM from the different sections of the different sections of the preexisting piles stored at sawmills in the Rorainópolis Timber Hub, state of Roraima, Brazil. The tests were granulometry, moisture (wet basis), hydrogen potential, solubility of the wood in 1% sodium hydroxide solution, bulk density, extractives of wood, lignin, holocellulose, volatile materials, ash, fixed carbon and higher heating value (PCS). The sections of the piles presented statistically different behaviors for most of the physical, chemical and energetic characteristics. The sections of the base and middle of the piles obtained similar and distinct behaviors from the top of the piles, exceptions were the tests of hydrogen potential, solubility of the wood in 1% sodium hydroxide solution, extractives of wood and ash. Based on the results obtained, the RFDM underwent chemical and energetic changes during the storage process. In addition, storage contributed to the increase of PCS at the base and in the middle of the piles, due to the higher percentage of lignin present in the samples. Based on the results obtained, the RFDM of the different sections of the piles have initial potential for energy production.
  Keywords: Original Article
  PubDate: 2024-06-12
  DOI: 10.34062/afs.v11i1.16403
Characterization of the ecological aspects of species listed in Decree No.
785 of January 18, 2021, of the State of Mato Grosso
- Authors: Ana Beatriz do Nascimento Marques, Mariane Ribeiro Amorim, Jaçanan Eloisa de Freitas Milani
  Pages: 2183 - 2190
  Abstract: The abundance of native fields and forage plants in the Pantanal has favored the development of extensive livestock, the main economic activity in the region. The exercise of this activity has been jeopardized due to the reduction in support of native pasture through the invasion of dominant species. Aiming to regulate the management for the restoration of natural landscapes the Mato Grosso State Department of Environment created Decree No. 785/2021, which ordains for the restoration activities of the grassland formations in the Mato Grosso Pantanal. By observing existing gaps in the current legislation such as the lack of ecological information about the listed species, management and control methods as well as the possibility of evaluating socio-environmental aspects, this work aims to describe the ecological characteristics of tree and shrub species listed in Decree No. 785/2021, seeking to provide information that can complement the legislation as well as the terms of reference that guide those technically responsible for the management and control of species in native grasslands. . It was verified that the invasive potential of the species contained in the legislation is associated with intrinsic characteristics such as their propagation and seed dispersal; besides this, it was possible to list possible economic uses. The information obtained can be added to the available terms of reference as a guideline for the accomplishment of good management practices for the restoration of grassland formations.
  Keywords: Original Article
  PubDate: 2024-06-12
  DOI: 10.34062/afs.v11i1.15445
Yield and economic feasibility of Eucalyptus dunnii stands under different
management regimes
- Authors: Luis Gustavo Fillus, Isabel Homczinski, Andrea Nogueira Dias, Rodrigo Otávio Veiga de Miranda, Gabriel de Magalhães Miranda, Rafael Henrique Roque, Rafaella Carvalho Mayrinck, Ximena Mendes de Oliveira
  Pages: 2191 - 2199
  Abstract: The aim of this study was to analyze volume yield, number of logs per assortment and economic feasibility of Eucalyptus dunnii stands under different management regimes. The stands are located in Fernandes Pinheiro, Paraná State, Brazil and cover a total area of 2.26 hectares, fragmented into three strata (treatments): A (8 years after coppicing regime), B (9-year old stand after two thinnings), and C (7-year old stand after one thinning). Diameters at breast height (d) of all trees and heights of 110 trees were obtained. The total height of the other trees was estimated by a hypsometric relationship. Tree volume was obtained through a taper function. For the economic analysis comparing the three strata, the periodic equivalent value (PEV) and the internal return rate (IRR) were evaluated considering an interest rate of 8%. The commercial volumetric estimates ranged from 156.61 to 375.53 m³ ha⁻¹. The stratum A yielded more logs, mostly for energy; stratum B yielded larger logs, and stratum C yielded similar number and volume of logs from all assortment classes. For economic analysis, PEV ranged from R$ 196.16 to R$ 1,255.79 ha year⁻¹, and IRR ranged from 12.73% per year (stratum A) to 21.35% per year (stratum C), based on a interest rate of 8%. It was concluded that the management condition of stratum C resulted in higher economic returns, with its product primarily destined for Sawmill 1.
  Keywords: Original Article
  PubDate: 2024-07-02
  DOI: 10.34062/afs.v11i2.14896
Comparative Study of Water Quality Across Different Seasons in the
Gregório River Watershed, São Paulo, Brazil
- Authors: Danielly de Oliveira Fornaziero, João Ânderson Fulan, Jhony Vendruscolo
  Pages: 2200 - 2207
  Abstract: The goal of this study was to monitor the water quality in the Gregório river, São Carlos, São Paulo during the dry and rainy seasons using traditional methods such as physical and chemical analysis of the water and biological indicators. Six sampling points were monitored, ranging from the nearest location to the source of the river to its confluence with the Monjolinho river. Physical and chemical parameters of water (water surface temperature, dissolved oxygen, pH, and conductivity) were measured using a multiparameter probe. The distance between the points was determined according to the access to the site: from P1 to P2 (1328 m), from P2 to P3 (1278 m), from P3 to P4 (201 m), from P4 to P5 (820 m), and finally from P5 to P6 (1814 m). The biotic index used in conjunction with the environmental variables was the Biological Monitoring Working Party (BMWP), a qualitative index that utilizes benthic macroinvertebrates to classify water quality. Ceratopogonidae, Chironomidae, Chironomus, Enchytraeidae, Hirudinea, and Naididae were recorded at sites P1, P2, and P6 during both the dry and rainy seasons. This study, particularly at P6, it was observed that despite the higher concentration of dissolved oxygen compared to the other analyzed sites, which would indicate good water quality, the BMWP indicated that the location had a strongly polluted water quality, suggesting that environmental factors must be associated with biological indicators. It was concluded that the use of biological indicators along with environmental data provided a more reliable understanding of water quality.
  Keywords: Original Article
  PubDate: 2024-07-02
  DOI: 10.34062/afs.v11i2.15691
Estimating the annual diametric increment in a natural Rainforest in south
Brazil
- Authors: Gabriel Agostini Orso, João Paulo Sardo Madi, Alexandre Behling, Allan Libanio Pelissari, Afonso Figueiredo Filho, Sebastião Do Amaral Machado
  Pages: 2208 - 2220
  Abstract: Diametric increment is a complex variable to be estimated in natural forests, especially given species composition and slow tree growth. In these situations, some studies have turned their attention to the use of individual tree growth models combined with strategies for grouping trees or species. This work aimed to estimate the diametric increment of trees in a natural remnant of a natural Rainforest in south Brazil, aiming to investigate methodologies for forming groups of individuals that favor the estimation of individual diametric increment. The groups were formed based on a two-stage methodology, based on relative diameter, diametric increment, and competition indexes. The diametric increment was estimated based on a ratio estimator used to reconcile the grouping strategy. The grouping method satisfactorily classified the individuals, in which the competition indexes were relevant for this classification. The estimation error of the diametric increment was 0.0599 cm.year-1 for the training data and 0.0765 cm.year-1 for the validation data. The estimate of the future diameter had an average error of 4.52%. The combination of a two-stage stratification and ratio estimator was satisfactory for accurately estimating the diameter increments of all tree species.
  Keywords: Original Article
  PubDate: 2024-07-02
  DOI: 10.34062/afs.v11i2.16013
Spatio-temporal dynamic of forest cover distribution in Omo-Shasha-Oluwa
Tropical Forest Complex, Nigeria, (2014 – 2022)
- Authors: Stephen Aina, Joseph Onoja , Muhtari Aminu-Kano
  Pages: 2221 - 2230
  Abstract: : Forest Reserves (FRs) constitute a significant portion of the forested lands within protected areas, and their conservation is essential for Nigeria to achieve the United Nations’ Sustainable Development Goals (SDGs). Our study conducted an analysis of the dynamics of forested lands in the study area to evaluate and rank management performance over the period of 2014-2022. The forest bloc in OSO witnessed an expansion by 1.39% (3,929.67 ha) from 27.73% to 29.12% forest cover in 2014 and 2022, respectively. Forest fragments declined from 16 to 10 units for the forest bloc (>201.1 ha) with a proportionate increase in the Largest Patch Index (LPI) from 5,815.53 ha to 39,234.15 ha, in the period 2014 -2022, respectively. Omo, Ago-Owu, Ife and Shasha FRs all witnessed negative changes in the percent forest cover representing a decline of about -0.43% (529.52 ha), -37.62% (9028.8 ha), -8.54% (1217.43 ha) and -0.29% (89.55 ha), respectively. Oluwa FR had an increase in the forest cover by 17.64% or 14,596.38 ha in the period 2014 - 2022. The forest cover retention rates in the period 2014 – 2022, ranks Oluwa FR ahead of other FRs in terms of Protected Area (PA) management efficiency. The results highlight the existence of a relatively better and effective forest management system in the reserve. Landsat data are capable of providing near real-time forest cover information that can be integrated into existing tracking tools for periodically gauging management efficiency and performances across the PAs of Nigeria.
  Keywords: Original Article
  PubDate: 2024-10-02
  DOI: 10.34062/afs.v11i3.14876
Visitantes florais e produção de frutos de Cagaiteira (Eugenia
desynterica DC.)
- Authors: Gessica Xavier Torres , Daniel Cardoso Brandão, Eli Regina Barboza de Souza , Carlos de Melo e Silva-Neto
  Pages: 2231 - 2238
  Abstract: The cagaiteira Eugenia dysenterica is an important fruit species native to the Brazilian cerrados, belonging to the Myrtaceae family. Pollination represents one of the environmental services with global reach, playing an essential role in preserving the biodiversity of both wild and agricultural plants worldwide. Therefore, the work aimed to survey the main floral visitors to E. dysenterica collection, located in the experimental area of the School of Agronomy at the Federal University of Goiás in Goiânia, GO. The E. dysenterica was visited by around 13 species of floral visitors. Among the visitors, the species Scaptotrigona depilis, Paratrigona lineata, Exomalopsis analis, wasps (Polybia sp.) and dipterans. The flower-to-fruit conversion rate for open flowers (without bagging) was 11%, whereas flowers that were isolated with floral visitors and potential pollinators had a flower-to-fruit conversion rate of only 5%. Thus, we conclude that E. dysenterica depends on pollinators, especially bees, to increase its fruit production.
  Keywords: Original Article
  PubDate: 2024-10-02
  DOI: 10.34062/afs.v11i3.16691
A synthesis of research on the sequestration of carbon in forests and the
conservation of water
- Authors: Asif Raihan
  Pages: 2239 - 2248
  Abstract: Forests help solve environmental issues by sequestering carbon and conserving water. Forest management's ultimate goal is to optimize dual functions to reduce greenhouse gas emissions and maintain the water cycle. Increased forest production and ecosystem water balance have costs and benefits. This study reviews forest carbon sequestration and hydrological principles for future research. The interaction between forest carbon sequestration and water conservation revealed information gaps and research needs. Previous research has helped comprehend forest carbon fixing and hydrological regulation. Many equipment and methods can quantify and monitor forest carbon and hydrological issues at multiple geographical and temporal levels. Afforestation programs that improve carbon sequestration and water maintenance ecosystem services lack knowledge. Top-down scheduling of afforestation in locations with uncertain water supplies must address how much and where to plant assumed existing land, ecological implications, and local progress and income. Planting decisions dominate local management. Cooperative research is needed to build and manage planted forests for carbon sequestration, water management, and other societal purposes. This study's integrated paradigm for forest management considers carbon sequestration and water conservation can assist future research.
  Keywords: Review
  PubDate: 2024-10-02
  DOI: 10.34062/afs.v11i3.15339

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