Evaluation and potential use of native forest species in the recovery of a legal reserve in the Western Amazon

The Brazilian Amazon, which has been heavily devastated by exploratory processes and human occupation, has great value in terms of forest resources. As such, the aim of this study was to evaluate the potential use of native forest species to constitute productive agroforestry systems that can be set up in areas of legal reserve. A floristic/phytosociological survey was carried out of tree individuals with a diameter at breast height (DBH) ≥10 cm in 12 plots of 50 x 100 m (0.5 ha). From the data, species with a density of greater than three trees ha-1 were selected, and evaluated for use and ecological group. A total of 180 species distributed in 40 botanical families were identified, of which only 23 species presented an absolute density (AD) ≥3 trees ha-1, indicating that the occurrence of most species in the area is rare. Species such as Copaifera multijuga, Dinizia excelsa, Peltogyne paniculata, Tachigali chrysophylla, Dipteryx odorata, Bertholletia excelsa and Hevea brasiliensis are used commercially and may be indicated for production systems. As a result, native Amazonian forest species have great potential for use in recovery programs, promoting the recovery of local biodiversity and the development of small rural properties. However, it is necessary to invest in research and the development of public policy to support such initiatives.

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EVALUATION OF SUBSTRATES AND AMF SPORULATION IN THE PRODUCTION OF SEEDLINGS OF NATIVE FOREST SPECIES

Revista Árvore ◽

10.1590/0100-67622016000200007 ◽

2016 ◽

Vol 40 (2) ◽

pp. 245-254 ◽

Cited By ~ 2

Author(s):

Luciana de Moura Gonzaga ◽

Sarah Santos da Silva ◽

Silvane de Almeida Campos ◽

Rodrigo de Paula Ferreira ◽

André Narvaes da Rocha Campos ◽

...

Keyword(s):

Biomass Production ◽

Forest Restoration ◽

Rubber Tree ◽

Poultry Manure ◽

Native Forest ◽

Organic Substrates ◽

Forest Species ◽

Hymenaea Courbaril ◽

Significant Difference ◽

Potential Use

ABSTRACT The objective of this study was to evaluate organic substrates in the production of canafistula (Peltophorum dubium) (Spreng.) Taub, cutieira (Joannesiaprinceps Vell.), jatoba (Hymenaea courbaril L.) and rubber tree (Hevea brasiliensis M. Arg.) seedlings, native trees with potential use in forest restoration programs. The design was completely randomized with 10 substrate formulations with 4 repetitions of 3 plants for the four species. The evaluated substrates consisted of soil, bovine manure (BM), poultry manure (PM), chemical fertilizer (CF) and sand, in different proportions. The experiment was concluded at the end of 180 days for canafistula, cutieira and rubber and 210 days for jatoba. At the end of these periods, the root (RDM), shoot (SDM) and total (TDM) the dry matters of the seedlings were determined. Quantification of AMF spores and normalization between samples through SPORES/RDM correction were also performed. The Scott-Knott test at 5% probability was applied. Regarding biomass production, only canafistula had significant difference among the tested substrates. In relation to sporulation, the highest values were observed in cutieira and rubber tree in substrate containing PM. The substrates composed of 40 or 50% soil + 20% sand + 30% or 40 PM for canafistula; 50% soil + 20% sand + 30% PM for cutieira; and for jatoba and rubber tree 60% soil + 20% sand + 20% PM, enabled the best results in terms of biomass production in seedlings and AMF sporulation.

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Reference areas and edaphoclimatic variables: support for the choice of tree species in the restoration of riparian forests in Southern Brazil

Scientific Electronic Archives ◽

10.36560/13720201133 ◽

2020 ◽

Vol 13 (7) ◽

pp. 153

Author(s):

D. G. Rorato ◽

S. B. Marcuzzo ◽

F. Turchetto ◽

A. M. Griebeler ◽

T. C. Zavistanovicz ◽

...

Keyword(s):

Abiotic Factors ◽

Riparian Forests ◽

Ecological Group ◽

Native Forest ◽

Natural Occurrence ◽

Forest Species ◽

Ecological Processes ◽

Wide Range ◽

Choice Of Species ◽

Reference Areas

Identifying factors involved in the choice of species for forest restoration is a great challenge, given the wide range of biotic and abiotic factors that may influence ecosystem trajectories. This review aims to highlight the information from reference areas and edaphoclimatic factors as aids in the choice of forest species to be used in the restoration of riparian forests, especially for the southern of Brazil. Native forest species of natural occurrence in riparian areas offer the potential for recovering these environments, depending on the ecological group and stage of ecological succession where they are naturally present. However, floristic and phytosociological surveys in well-preserved remnant riparian forests with no anthropogenic interference and in areas at different stages of natural succession are needed. This will enable the identification of the most representative species which are adapted to the conditions of local sites. Additionally, information must be correlated with chemical, physical and biological aspects of the soil as well as ecological processes and climatic characteristics, enabling the proper choice of species. Thus, the components of soil-plant-atmosphere system must be incorporated into the degraded environments in order to achieve an integrated recovery of ecological processes.

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Agroforests: pre-domestication of forest trees or true domestication of forest ecosystems?

Netherlands Journal of Agricultural Science ◽

10.18174/njas.v45i4.505 ◽

1997 ◽

Vol 45 (4) ◽

pp. 451-462 ◽

Cited By ~ 11

Author(s):

G. Michon ◽

H. De Foresta

Keyword(s):

Forest Ecosystems ◽

Production Systems ◽

Smallholder Farmers ◽

Agroforestry Systems ◽

Forest Resources ◽

Plant Domestication ◽

Forest Species ◽

Linear Evolution ◽

Genetically Improved ◽

Indigenous Forest

Domestication of forest resources and artificialization of forest ecosystems in tropical forest areas are often encompassed in a linear way: from wild resources to genetically improved trees, from complex ecosystems to controlled tree plantations. This linear evolution might be true for professional forestry or horticulture. However, it does not embrace the complexity of smallholder farmers practices for forest resources utilization. Incorporating forest resources in production systems is not a new practice in the tropics, it even constitute the very basis of a whole facet of indigenous agricultures. But this agroforestry practice is not usually considered as a full domestication process. And, in spite of an increasing amount of academic interest for indigenous forest-like plantation models, agroforestry research is not yet fully considering the prospects of these models as far as forest species are concerned. The paper focuses on the discussion of Indonesian examples of ecosystem manipulation and plant domestication. Complex agroforestry systems have been developed by local people for the management of resources ranging from locally consumed forest fruits to highly valuable industrial products such as resins and latexes. This indigenous agroforestry is presented as an elaborate process of total transfer, not only of selected forest resources, but also of true forest structures, from the sphere of 'nature' to that of 'agriculture'. This process is analysed as a particular domestication strategy which integrates conventional species domestication techniques to an original attempt of ecosystem domestication. Prospects for further developing this 'agroforest strategy' for the domestication of forest species are then discussed.

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Density and morphological characterization of bacteria in integrated and exclusive production systems

Scientific Electronic Archives ◽

10.36560/13920201194 ◽

2020 ◽

Vol 13 (11) ◽

pp. 1

Author(s):

A. R. B. Zanco ◽

A. Ferreira ◽

G. C. M. Berber ◽

E. N. Gonzaga ◽

D. C. C. Sabino

Keyword(s):

Bacterial Community ◽

Rainy Season ◽

Production Systems ◽

Cropping System ◽

Morphological Characterization ◽

Native Forest ◽

Exclusive Production ◽

Colony Forming Units

The different integrated production systems can directly interfere with its bacterial community. The present study aimed to assess density, bacterial diversity and the influence of dry and rainy season in different integrated and an exclusive production system. The fallow and a native forest area was assessed to. Samples were collected in 2012 March and September. The isolation were carried out into Petri dishes containing DYGS medium. The number of colony forming units (CFU) was counted after 48 hours and. The bacterial density ranged between 106 and 107 CFU g-1 soil. The crop system affected the dynamics of the bacterial community only in the rainy season. The rainy season showed greater density of total bacteria when compared to the dry period regardless of the cropping system. The dendrograms with 80 % similarity showed thirteen and fourteen groups in the rainy and dry seasons. Isolates with the capacity to solubilize phosphate in vitro were obtained from all areas in the two seasons, but this feature has been prevalent in bacteria isolated during the rainy season

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Environmental assessment of the Tung cultivation through life cycle analysis

International Journal of Engineering & Technology ◽

10.14419/ijet.v3i1.1597 ◽

2014 ◽

Vol 3 (1) ◽

pp. 70 ◽

Cited By ~ 2

Author(s):

Marcelo Bern�l ◽

Rosana Schneider ◽

�nio Machado

Keyword(s):

Life Cycle ◽

Production Systems ◽

Life Cycle Management ◽

Assessment Method ◽

Agroforestry Systems ◽

Family Farms ◽

Conventional Agriculture ◽

The Past ◽

Ecosystem Changes ◽

Poor Soil

Over the past few decades, conventional agriculture has been facing serious crises caused by numerous factors, including poor soil management and the excessive application of pesticides. Thus, alternative production systems have been developed, including agroforestry systems, especially those that produce both energy and food. The objective of this study was to environmentally evaluate the culture of Aleurites fordii Hemls. (Tung) using the Life Cycle Assessment method with the SimaPro 7.3.2 software. The results revealed that in family farms that use less mechanization to harvest crops, the primary category of environmental impact was land use, which included the removal of animal and vegetable species and ecosystem changes. The full impact of this category was 1741.21 m2yr PDF (potentially disappeared fraction). Subsequently, prognostics were established for the reduction of such impacts, and we conclude that Tung has a high potential for agricultural installation with high responsibility to the environment. Keywords: Environmental factors, Aleurites fordii Hemls, Life Cycle Management, Tung.

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Projections of Local Knowledge-Based Adaptation Strategies of Mexican Coffee Farmers

Climate ◽

10.3390/cli9040060 ◽

2021 ◽

Vol 9 (4) ◽

pp. 60

Author(s):

Patricia Ruiz-García ◽

Cecilia Conde-Álvarez ◽

Jesús David Gómez-Díaz ◽

Alejandro Ismael Monterroso-Rivas

Keyword(s):

Climate Change ◽

Extreme Events ◽

Local Knowledge ◽

Production Systems ◽

Agroforestry Systems ◽

Southern Mexico ◽

Knowledge Based ◽

Coffee Farmers ◽

Extreme Hydrological Events ◽

Adaptation Policies

Local knowledge can be a strategy for coping with extreme events and adapting to climate change. In Mexico, extreme events and climate change projections suggest the urgency of promoting local adaptation policies and strategies. This paper provides an assessment of adaptation actions based on the local knowledge of coffee farmers in southern Mexico. The strategies include collective and individual adaptation actions that farmers have established. To determine their viability and impacts, carbon stocks and fluxes in the system’s aboveground biomass were projected, along with water balance variables. Stored carbon contents are projected to increase by more than 90%, while maintaining agroforestry systems will also help serve to protect against extreme hydrological events. Finally, the integration of local knowledge into national climate change adaptation plans is discussed and suggested with a local focus. We conclude that local knowledge can be successful in conserving agroecological coffee production systems.

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Tissue Ki67 proliferative index expression and pathological changes in hemodialysis arteriovenous fistulae: Preliminary single-center results

The Journal of Vascular Access ◽

10.1177/11297298211015495 ◽

2021 ◽

pp. 112972982110154

Author(s):

Raffaella Mauro ◽

Cristina Rocchi ◽

Francesco Vasuri ◽

Alessia Pini ◽

Anna Laura Croci Chiocchini ◽

...

Keyword(s):

Morphological Changes ◽

Hot Spot ◽

Wall Thickening ◽

Proliferating Cells ◽

Ki 67 ◽

Group A ◽

The Mean ◽

Set Up ◽

Group B

Background: Arteriovenous fistula (AVF) for hemodialysis integrates outward remodeling with vessel wall thickening in response to drastic hemodynamic changes. Aim of this study is to determine the role of Ki67, a well-established proliferative marker, related to AVF, and its relationship with time-dependent histological morphologic changes. Materials and methods: All patients were enrolled in 1 year and stratified in two groups: (A) pre-dialysis patients submitted to first AVF and (B) patients submitted to revision of AVF. Morphological changes: neo-angiogenesis (NAG), myointimal thickening (MIT), inflammatory infiltrate (IT), and aneurysmatic fistula degeneration (AD). The time of AVF creation was recorded. A biopsy of native vein in Group A and of arterialized vein in Group B was submitted to histological and immunohistochemical (IHC) analysis. IHC for Ki67 was automatically performed in all specimens. Ki67 immunoreactivity was assessed as the mean number of positive cells on several high-power fields, counted in the hot spots. Results: A total of 138 patients were enrolled, 69 (50.0%) Group A and 69 (50.0%) Group B. No NAG or MIT were found in Group A. Seven (10.1%) Group A veins showed a mild MIT. Analyzing the Group B, a moderate-to-severe MIT was present in 35 (50.7%), IT in 19 (27.5%), NAG in 37 (53.6%); AD was present in 10 (14.5%). All AVF of Group B with the exception of one (1.4%) showed a positivity for Ki67, with a mean of 12.31 ± 13.79 positive cells/hot spot (range 0–65). Ki67-immunoreactive cells had a subendothelial localization in 23 (33.3%) cases, a myointimal localization in SMC in 35 (50.7%) cases. The number of positive cells was significantly correlated with subendothelial localization of Ki67 ( p = 0.001) and with NA ( p = 0.001). Conclusions: Native veins do not contain cycling cells. In contrast, vascular cell proliferation starts immediately after AVF creation and persists independently of the time the fistula is set up. The amount of proliferating cells is significantly associated with MIT and subendothelial localization of Ki67-immunoreactive cells, thus suggesting a role of Ki-67 index in predicting AVF failure.

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Estratégias para promoção do diálogo de saberes entre agricultores familiares e educandos sobre o bioma Pampa

REVISTA BRASILEIRA DE EXTENSÃO UNIVERSITÁRIA ◽

10.36661/2358-0399.2021v12i2.11657 ◽

2021 ◽

Vol 12 (2) ◽

pp. 191-201

Author(s):

Ketlin Vitoria Espinosa Sandim ◽

Stefany Areva Severo ◽

Cláudio Becker ◽

Adriana Carla Dias Trevisan

Keyword(s):

Production Systems ◽

Knowledge Exchange ◽

Animal Husbandry ◽

Agroforestry Systems ◽

Pedagogical Content ◽

Family Farmers ◽

Pampa Biome ◽

Local Species ◽

Young Students ◽

Ecological Importance

Este estudo buscou promover a disseminação de informações entre distintos sujeitos sociais sobre a importância ecológica da paisagem nos sistemas produtivos, tendo como tema gerador o conhecimento e reconhecimento de espécies botânicas nativas pelos agricultores familiares e educandos em Sant’Ana do Livramento-RS. Foram realizadas dezesseis entrevistas com os agricultores, que, depois de sistematizadas, delimitaram as estratégias de disseminação dos conteúdos aos jovens educandos. Os resultados demonstram que os agricultores entendem a importância da conservação do Pampa para seus cultivos e criação animal, percebem e utilizam o potencial econômico das espécies em sistemas tradicionais e agroflorestais. Quanto aos jovens educandos, foi possível avaliar a importância de oportunizar novos conteúdos e novas práticas pedagógicas. Além disso, os resultados permitem a reflexão da importância de conectar a pesquisa com a extensão universitária, bem como os saberes de adultos do campo com os saberes de jovens da cidade. Conclui-se que a troca de saberes é uma estratégia de valorização e conservação do bioma Pampa. Palavras-chave: Agroecologia; Biodiversidade; Juventude; Agroflorestas Strategies for promoting knowledge dialogue between family farmers and students about the Pampa biome Abstract: This study sought to promote the dissemination of information between distinct social subjects about the ecological importance of the local flora in production systems. The generative theme is knowledge and recognition of native botanic species by family farmers and students in Santana do Livramento in the Rio Grande do Sul state (Brazil). Interviews with sixteen farmers were systematized and used to align strategies to disseminate content to young students. The results show that the farmers understand the importance of conservation of the Pampa for their crops and animal husbandry, perceiving the economic potential of various local species in traditional and agroforestry systems. In terms of the young students, it was possible to evaluate the importance of offering new pedagogical content and practices. The results allow a reflection on the importance of connecting research with university extension and linking the knowledge of adult farmers with young urban students. It was concluded that knowledge exchange is an important strategy for valorizing and conserving the Pampa biome. Keywords: Agroecology; Biodiversity; Youth; Agroforests

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ESTOQUES DE BIOMASSA E NUTRIENTES EM TRÊS ESPÉCIES DE Parkia EM PLANTIOS JOVENS SOBRE ÁREA DEGRADADA NA AMAZÔNIA CENTRAL

FLORESTA ◽

10.5380/rf.v44i4.34135 ◽

2014 ◽

Vol 44 (4) ◽

pp. 637

Author(s):

Karen C.P. da Costa ◽

João B.S. Ferraz ◽

Rodrigo P. Bastos ◽

Tatiane Da S. Reis ◽

Marciel J. Ferreira ◽

...

Keyword(s):

Native Forest ◽

Total Biomass ◽

Nutrient Accumulation ◽

Forest Species ◽

Coarse Roots ◽

Stem Wood ◽

Degraded Area ◽

Below Ground ◽

O 10 ◽

Harvest Method

As estratégias de distribuição de biomassa e nutrientes utilizadas pelas espécies florestais podem refletir sua capacidade de sobrevivência em plantios sobre áreas degradadas. O objetivo deste estudo foi quantificar os estoques de biomassa e nutrientes nos compartimentos arbóreos de Parkia multijuga, Parkia nitida e Parkia pendula em plantios sobre área degradada em Manaus, AM. A biomassa foi determinada pelo método destrutivo em seis árvores de cada espécie, que foram compartimentadas em: folhas, galhos finos (Ø <10 cm), galhos grossos (Ø ≥10 cm), fuste, raízes médias (2 mm ≤ Ø <5 cm) e raízes grossas (Ø ≥5 cm). Aos quatro anos, Parkia multijuga exibiu 60% do total de biomassa nos compartimentos aéreos e 40% nos subterrâneos. Parkia nitida exibiu 84% nos compartimentos aéreos e apenas 16% nos subterrâneos. Parkia pendula exibiu 67% nos compartimentos aéreos e 33% nos subterrâneos. A ordem de acúmulo de macronutrientes nos compartimentos foi: N > Ca > K > Mg > P. O fato de Parkia multijuga adotar estratégias de alocação de biomassa e nutrientes que favorecerão seu desempenho sobre sítios com baixa disponibilidade de recursos sustenta sua indicação para a composição de programas de reflorestamento em áreas degradadas na Amazônia.Palavras-chave: Espécies florestais nativas; nutrição florestal; reflorestamento; restauração. AbstractBiomass and nutrients in three species of Parkia plantings on degraded area in Central Amazon. Biomass and nutrients partitioning strategies in tree species may reflect their ability to survive in plantations on degraded areas. The objective of this study was to investigate the content of biomass and nutrients in tree components of Parkia multijuga, Parkia nitida and Parkia pendula on plantings in degraded area in Manaus, AM. The biomass was determined by the harvest method in six trees of each species, which were subdivided into leaves, fine branches (Ø < 10 cm), coarse branches (Ø ≥10 cm), stem wood, medium roots (≤ 2 mm Ø < 5 cm ) and coarse roots (Ø ≥ 5 cm). At 4 years, Parkia multijuga allocated 60% of the total biomass to above-ground components and 40% to below-ground. Parkia nitida allocated 84% to above-ground and 16% to below-ground. Parkia pendula allocated 67% to above-ground components and 33% to below-ground. The order of the nutrient accumulation in tree compartments was: N > Ca > K > Mg > P. Parkia multijuga, by adopting better strategies of distribution of biomass and nutrients, it is a recommended species for reforestation programs on degraded sites in the Amazon.Keywords: Native forest species; forest nutrition; reforestation; restoration.

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Occurrence of Scolytinae in mangrove with impact trap and in wood of five forest species

Bioscience Journal ◽

10.14393/bj-v36n1a2020-47920 ◽

2020 ◽

Vol 36 (1) ◽

Author(s):

Charles Oliveira da Silva ◽

Henrique Trevisan ◽

Thiago Sampaio de Souza ◽

Acacio Geraldo de Carvalho

Keyword(s):

Forest Ecosystems ◽

Melia Azedarach ◽

Insect Infestation ◽

Forest Species ◽

Wood Degradation ◽

Eucalyptus Pellita ◽

Baited Traps ◽

Mangrove Environment ◽

Set Up ◽

Corymbia Citriodora

Scolytinae is a beetle group belonging to Order Coleoptera; these insects play an essential role in wood degradation in forest ecosystems, since they build galleries that enable substrate colonization by other saprophytic organisms, as well as nutrient cycling. Thus, the aim of the current study was to evaluate the occurrence of Scolytinae in the wood of 5 tree species exposed to mangrove environment, as well as to simultaneously survey Scolytinae specimens captured in ethanol-baited impact traps placed in the same environment. The study was carried out in a mangrove area located in Santa Cruz neighborhood - RJ. Five freshly-harvested Clitoria fairchildiana, Rhyzophora mangle, Corymbia citriodora, Melia azedarach and Eucalyptus pellita wood logs (1 m long and 5-10 cm diameter) were arranged perpendicular to the ground (1 m above it) and spaced 30 cm away from each other. Five impact traps were set up 50 m away from each other, 1.3 m above the ground. Insects were collected for 5 months. One hundred and thirty (130) Scolytinae individuals (14 species in 2 genera) were recorded in the wood logs; the relative frequency (Fr) of the species comprised Xyleborus affinis (33.9%) and Hypothenemus sp.4 (17.7%), which represented 51.6% of the total number of captured individuals. Hypothenemus sp.6 specimens were not collected in ethanol-baited traps, but the wood of C. fairchildiana. E. pellita did not show insect infestation. The traps captured 798 individuals (24 species belonging to 8 genera); the frequency of X. affinis (25.3%) and Hypothenemus eruditus (14.5%) represented 39.8% of the total number of captured insects.

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