Dinâmica Da Cobertura Da Terra Do Distrito Federal Dentro De Suas Unidades Geomorfológicas

Neves, Glauber das; Sena-Souza, João Paulo; Vasconcelos, Vinícius; Martins, Éder de Souza; Couto, Antônio Felipe

doi:10.14393/sn-v29n3-2017-2

Cited by 6 publications

(16 citation statements)

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“…In the past two decades, significant land‐use changes have taken place in the FAL region, such as urban expansion, which led to a marked increase in constructed area and the implementation of center pivot irrigation systems in the region (Codeplan, 2017; Neves et al, 2017). In moist grassland areas of the Cerrado, shallow groundwater hinders occupation by woody species (Xavier et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Fire events were recorded in the grassland sites and almost all of the area of the FAL five months prior to the first inventory in August 1999 (Munhoz & Felfili, 2004 and in August 2011 (Souza et al, 2021). The anthropic pressures that the area faces involve changes in the hydrological regime due to the increase in the urban area and installation of central pivots nearby (Neves et al, 2017), the arrival of propagules of invasive exotic species, and factors related to the human presence around the area, such as fertilizer use and the occurrence of fire. At FAL, in each area a 400 × 300 m plot was installed, which was then subdivided into four quadrats, each 200 × 150 m. A linetransect was randomly placed in each quadrat for sampling.…”

Section: Study Areasmentioning

confidence: 99%

“…This process is alarming, because the morphological and physiological attributes of the encroaching species affect the ecosystem microclimate (Chapin et al, 1997), further facilitating their proliferation and altering the species pool of the community (Knapp et al, 2008). In the face of the massive human occupation that took place in the 1960s in the central region of the Cerrado (Neves et al, 2017), studies that assess the dynamics of grassland areas in this region can help to understand the dynamics of plant composition over time.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we evaluated the composition and cover of plant species over a 20‐year period in three Cerrado grassland areas: a moist grassland located in a region under low anthropogenic pressure, a dry shrub grassland (hereafter referred to as shrub grassland) and a moist grassland located in a region under strong anthropogenic pressure (Neves et al, 2017). In these three areas, we investigated: (a) changes in species cover, composition, richness (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Decrease in species richness and diversity, and shrub encroachment in Cerrado grasslands: A 20 years study

Souza

Ferreira

Munhoz

2022

Applied Vegetation Science

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Question:The Cerrado is a global biodiversity hotspot, highly threatened by changes in land use. Alterations in species composition and the colonization of Cerrado grasslands by woody species can lead to long-term changes in these communities. In this study, we investigated changes over 20 years in three grassland areas, in terms of species richness and diversity and growth-form cover, as well as the effects of shrub and grass encroachment on species richness.Location: Cerrado Brazilian savanna, moist grassland and dry shrub grassland. Areas under low and high anthropogenic pressure.Methods: Plant species composition and cover were sampled on seven occasions between the years 2000 and 2020, in permanent line-transects. We compared plant cover, richness, diversity and growth-form cover between the periods for each area.Next, we developed mixed-effect linear models to test whether species richness in grasslands at the latest sampling event was altered by species representing 70% of the species cover at this time.Results: Grasslands located in areas under higher anthropogenic pressure presented reduced richness and diversity, and cover concentrated on a few species of shrubs and large tussock grasses. Moist grassland undergoing encroachment by the native shrub Trembleya parviflora had lost over 50% of its diversity since encroachment. In the same area, a shrub grassland undergoing encroachment by native shrub Raulinoreitzia tremula, three native grass species and one exotic grass presented significantly reduced species richness. The moist grassland in an area under low anthropogenic pressure showed a reordering of the species cover over time, but a decrease in species richness. Conclusion:We observed changes in plant richness, diversity, cover, composition and growth-form cover over a period of 20 years in grassland communities. We found, however, different trajectories in the three grassland areas sampled, mainly due to the encroachment of a few species, leading to floristic homogenization in grasslands located in areas under high anthropogenic pressure.

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Section: Discussionmentioning

confidence: 99%

Section: Study Areasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Decrease in species richness and diversity, and shrub encroachment in Cerrado grasslands: A 20 years study

Souza

Ferreira

Munhoz

2022

Applied Vegetation Science

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“…A APA da Serra Dourada, localizada nos municípios de Goiás, Mossâmedes e Buriti de Goiás, é uma UC estadual criada em 1998 (Tabela 1). Antes da sua criação, a APA possuía cerca de 63% de cobertura de Cerrado (Figura 3E MARTINS et al, 2007;COUTO JUNIOR et al, 2010;NEVES et al 2017), o que justifica a redução das taxas de conversão ao longo dos anos estudados.…”

Section: Fonte: Projeto Mapbiomas (2019)unclassified

Contribuição Das Áreas De Proteção Ambiental Na Conservação Do Cerrado

Melo

Martins

2020

Rev. Geogr. (Recife, Online)

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O estabelecimento de Unidades de Conservação (UCs) se faz importante à proteção da biodiversidade, principalmente em um momento em que se levantam discussões sobre os limites de exploração e alteração do meio ambiente devido aos usos antrópicos. Com o objetivo de avaliar a efetividade de uma categoria de UC, a Área de Proteção Ambiental (APA), na conservação do Cerrado, o presente trabalho utilizou dados georreferenciado, do Ministério do Meio Ambiente e do projeto MapBiomas, para comparar, em diferentes anos, percentuais das classes de uso e cobertura da terra de 14 APAs, distribuídas majoritariamente no estado de Goiás e no Distrito Federal. Observou-se que, dentre as APAs avaliadas, 8 tiveram as áreas ocupadas pela cobertura de Cerrado reduzidas, 3 acrescidas e 3 permaneceram com percentual análogo. Embora a maioria das APAs tenham perdido área de Cerrado, é plausível afirmar, apoiado na acurácia intrínseca à metodologia de obtenção dos dados e na comparação da redução desta classe no próprio bioma, que as APAs estão cumprindo com o seu objetivo de compatibilizar a conservação da natureza com o uso sustentável dos recursos naturais.

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The effect of woody encroachment on taxonomic and functional diversity and soil properties in Cerrado wetlands

Trindade,

Ferreira,

Costa

et al. 2024

Flora

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Dinâmica Da Cobertura Da Terra Do Distrito Federal Dentro De Suas Unidades Geomorfológicas

Cited by 6 publications

References 0 publications

Decrease in species richness and diversity, and shrub encroachment in Cerrado grasslands: A 20 years study

Decrease in species richness and diversity, and shrub encroachment in Cerrado grasslands: A 20 years study

Contribuição Das Áreas De Proteção Ambiental Na Conservação Do Cerrado

The effect of woody encroachment on taxonomic and functional diversity and soil properties in Cerrado wetlands

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