Biodiversidade em sistemas agroecológicos no município de Choró, CE, Brasil

Almeida, Maria Valdenira Rodrigues de; Oliveira, Teógenes Senna de; Bezerra, Antônio Marcos Esmeraldo

doi:10.1590/s0103-84782009005000047

Cited by 13 publications

(16 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Studies by Aguiar et al (2010), Iwata et al (2012), Maia et al(2006;, Nogueira et al (2008), and Silva et al (2011) demonstrated the beneficial effects of agroforestry systems on the soil chemical, physical and biological properties, as well as on the preservation of the plant diversity (ALMEIDA et al, 2009;CAMPANHA et al, 2011). Some of the above studies were developed in experimental areas of the National Goat and Sheep Research Center (CNPCO), in the northern part of the Ceará State, Brazil, where agroforestry systems are being studied as an alternative to the traditional management of family farming.…”

Section: Introductionmentioning

confidence: 99%

Carbon sequestration and nutrient reserves under differen t land use systems

et al. 2014

View full text Add to dashboard Cite

-This study evaluated the contribution of agroforestry (AFS) and traditional systems to carbon sequestration and nutrient reserves in plants, litter and soil. The study was carried out in the semiarid region of Brazil in a long-term experiment on an experimental farm of the goat and sheep section of the Brazilian Agricultural Research Corporation (Embrapa). Two agroforestry systems were investigated: agrosilvopastoral (ASP) and forest-pasture areas (SP) as well as traditional agriculture management (TM), two areas left fallow after TM (six fallow years -F6 and nine fallow years -F9) and one area of preserved Caatinga vegetation (CAT). Soil, litter and plants were sampled from all areas and the contents of C, N, P, K, Ca and Mg per compartment determined. The AFS (ASP and SP) had higher nutrient stocks than the traditional and intermediate stocks compared to the preserved Caatinga. In the ASP, a relevant part of the nutrients extracted by crops is returned to the system by constant inputs of litter, weeding of herbaceous vegetation and cutting of the legume crops. After fallow periods of six and nine years, carbon and nutrient stocks in the compartments soil, litter and herbaceous plants were similar to those of the preserved Caatinga (CAT), but still lower than under natural conditions in the woody vegetation.Keywords: Agroecology; Family farming; Agroforestry. SEQUESTRO DE CARBONO E RESERVA DE NUTRIENTES EM DIFERENTES SISTEMAS DE USO DA TERRA

show abstract

Section: Introductionmentioning

confidence: 99%

Carbon sequestration and nutrient reserves under differen t land use systems

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Neste sentido, Almeida et al (2009) também observaram a possível influência das áreas de vegetação nativa sobre pequenas áreas de cultivo situadas nas proximidades. Provavelmente, se fosse o caso de grandes extensões de terras cultivadas com este manejo (corte e queima), o restabelecimento e a colonização com novas espécies seriam mais demorados, uma vez que o banco de sementes em áreas queimadas é reduzido substancialmente em quantidade e diversidade (Mamede & Araújo, 2008) e o suprimento de novos indivíduos através da dispersão de propágulos por meio de áreas vizinhas torna-se menos provável.…”

Section: Discussionunclassified

Florística e estrutura vegetal em áreas de Caatinga sob diferentes sistemas de manejo

et al. 2019

View full text Add to dashboard Cite

Objetivou-se analisar a composição florística e caracterizar a estrutura da vegetação em áreas sob dois sistemas agroflorestais (AGP e SILV), em plantio tradicional (TRAD0), em pousios de seis (TRAD6) e nove (TRAD9) anos e em Caatinga conservada (MATA). Adotou-se o método de parcelas, sendo determinadas densidades e frequências absolutas de todas as espécies e distribuição diamétrica dos indivíduos arbóreos/arbustivos. Observou-se que, no estrato herbáceo, as espécies com maior frequência e densidade foram Alternanthera ficoidea em AGP, Amaranthus em SILV e TRAD0 e Commelina virginica em AGP, TRAD6, TRAD9 e MATA. No estrato arbóreo/arbustivo, as espécies com maior densidade e frequência foram Cordia oncocalyx em AGP, MATA e SILV e Mimosa caesalpiniifolia e Croton blachetianus em TRAD6 e TRAD9, respectivamente. SILV apresentou menor número de espécies arbóreas e maior número de espécies herbáceas, em relação à MATA e às áreas em pousio. Nas áreas em pousio por seis e nove anos ocorreu recuperação da vegetação quanto à composição florística, porém observou-se mais indivíduos com menores diâmetros, quando comparado à MATA.

show abstract

“…Only four studies examined the Caatinga and two the Pantanal (Table 1), revealing the lack of earthworm research in these biomes that occupy approximately 10 and 1.8% of Brazil's surface area, respectively (IBGE, 2019). Although only three species of earthworms 0 1,000 2,000 500 km from the Caatinga are known , there are records of large and very active earthworms in this biome (Cordero, 1943;Almeida et al, 2009), and clayey soils and/or those with a higher potential to maintain moisture can harbor earthworm population densities of over 100 individuals per square meter (Araújo et al, 2010;Lima et al, 2010). In the Caatinga, earthworms are subjected to a higher seasonal variation and to a lower precipitation than in other locations in the country, which causes them to undergo diapause or prolonged inactivity, generally at greater soil depths (Silva et al, 2015b).…”

Section: Geographic Representation Of the Studiesmentioning

confidence: 99%

Recommendations for assessing earthworm populations in Brazilian ecosystems

Nadolny

Santos

Demetrio

et al. 2020

Pesq. agropec. bras.

View full text Add to dashboard Cite

Earthworms are often related to fertile soils and are also frequently used as environmental quality indicators. However, to optimize their use as bioindicators, earthworm populations must be evaluated together with the environmental and anthropogenic variables regulating their communities. This review sought to identify the earthworm-sampling, soil chemical and physical, and environmental and anthropogenic attributes evaluated in 124 published studies that quantified earthworm abundance (>7,300 samples) in 765 sites with different types of climate, soils, land use, and management systems in Brazil. Soil chemical and physical attributes (except pH) were less reported (≤50% of studies) than other environmental variables such as sampling date, altitude, temperature, precipitation, climate and soil type, and land use (>50% of studies). Earthworms were rarely identified (24%) and few studies (31%) measured their biomass, although most provided adequate information on sampling protocol. Based on their importance in regulating earthworm populations, a set of variables is proposed to be evaluated when studying earthworm communities and other macrofauna groups. This should help guide future studies on earthworms in Brazil and other countries, optimize data collection and replicability, allow comparisons between different studies, and promote the use of earthworms as soil quality bioindicators.

show abstract

Biodiversidade em sistemas agroecológicos no município de Choró, CE, Brasil

Cited by 13 publications

References 10 publications

Carbon sequestration and nutrient reserves under differen t land use systems

Carbon sequestration and nutrient reserves under differen t land use systems

Florística e estrutura vegetal em áreas de Caatinga sob diferentes sistemas de manejo

Recommendations for assessing earthworm populations in Brazilian ecosystems

Contact Info

Product

Resources

About