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carbon nitrogen ratio
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ecosystems
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- Author:
- Milena Fermina Rosenfield; Sandra Cristina Müller
- Source:
- Restoration ecology 2019 v.27 no.1 pp. 158-167
- ISSN:
- 1061-2971
- Subject:
- carbon nitrogen ratio; detritivores; ecosystems; functional diversity; natural regeneration; soil; species richness; trees; tropical forests; vegetation structure; Brazil
- Abstract:
- ... Restoration projects may have broad and complex ecological goals that require distinct and integrative measures for evaluating restoration development and success. However, most studies usually evaluate structural and species composition parameters, with less emphasis on ecological processes and functioning. The main objective of this study is to use an integrated approach that considers structura ...
- DOI:
- 10.1111/rec.12828
- https://doi.org/10.1111/rec.12828
- Author:
- Tiago Diniz Althoff; Rômulo Simões Cezar Menezes; Alexandre de Siqueira Pinto; Frans Germain Corneel Pareyn; André Luiz de Carvalho; Júlio César Rodrigues Martins; Eric Xavier de Carvalho; Antonio Samuel Alves da Silva; Emmanuel Damilano Dutra; Everardo Valadares de Sá Barretto Sampaio
- Source:
- Agriculture, ecosystems & environment 2018 v.254 pp. 26-34
- ISSN:
- 0167-8809
- Subject:
- biomass; burning; caatinga; carbon nitrogen ratio; carbon sinks; clearcutting; crops; cutting; deforestation; dry forests; ecosystems; emissions; fuelwood; habitat fragmentation; indigenous species; issues and policy; land use; leaves; monitoring; nitrogen; nitrogen cycle; pastures; secondary forests; semiarid zones; simulation models; soil; soil organic carbon; stump extraction; stumps; tree growth; trees; Brazil
- Abstract:
- ... About half of the original one million km2 originally covered by the tropical dry forest of northeastern Brazil (known as “Caatinga”), has been deforested and replaced by crops and pastures. The remaining forest is constantly subjected to firewood removal. Besides that, pastures and cropping fields are often abandoned after a few years, allowing regeneration of secondary forest patches. These patt ...
- DOI:
- 10.1016/j.agee.2017.11.016
- https://doi.org/10.1016/j.agee.2017.11.016
- Author:
- Simone Kuster Mitre; Silvia Fernanda Mardegan; Cecilio Frois Caldeira; Silvio Junio Ramos; Antonio Eduardo Furtini Neto; Jose Oswaldo Siqueira; Markus Gastauer
- Source:
- Plant ecology 2018 v.219 no.11 pp. 1341-1353
- ISSN:
- 1385-0237
- Subject:
- Vellozia; carbon; carbon nitrogen ratio; drought; ecosystems; functional diversity; nitrogen; nutrient availability; nutrient content; savannas; shrublands; soil; species diversity; stable isotopes; tropical forests; water shortages; woodlands; Amazonia; Brazil
- Abstract:
- ... Ferriferous savannas, also known as cangas in Brazil, are nutrient-impoverished ecosystems adapted to seasonal droughts. These ecosystems support distinctive vegetation physiognomies and high plant diversity, although little is known about how nutrient and water availability shape these ecosystems. Our study was carried out in the cangas from Carajás, eastern Amazonia, Brazil. To investigate the N ...
- DOI:
- 10.1007/s11258-018-0883-6
- https://doi.org/10.1007/s11258-018-0883-6
- Author:
- Mara Regina Moitinho; Milton Parron Padovan; Elton da Silva Bicalho; Antonio Sergio Ferraudo; Daniel De Bortoli Teixeira; Angélica Santos Rabelo de Souza Bahia; Daniel Pereira Pinheiro; Llerme Navarro Vasquez; Newton La Scala Jr.
- Source:
- Sugar tech 2018 v.20 no.6 pp. 658-668
- ISSN:
- 0972-1525
- Subject:
- Hapludox; U.S. Soil Taxonomy; agricultural land; carbon dioxide; carbon dioxide production; carbon nitrogen ratio; cerrado; cultivars; ecosystems; global warming; greenhouse effect; greenhouse gas emissions; organic matter; soil carbon; soil sampling; soil temperature; soil water; straw; sugarcane; Brazil
- Abstract:
- ... Agriculture is a great emission source of CO₂ into the atmosphere, contributing significantly to the greenhouse effect. Considering the hypothesis that there are differences in soil carbon dynamics due to the distinct physiological and morphological characteristics of sugarcane cultivars, the aim of this study was to characterize the short-term soil CO₂ emission associated with soil attributes in ...
- DOI:
- 10.1007/s12355-018-0595-1
- https://doi.org/10.1007/s12355-018-0595-1
- Author:
- Pâmella C.D. Ribeiro; Esther Menendez; Danielle L. da Silva; Douglas Bonieck; Martha Helena Ramírez-Bahena; Maria Aparecida Resende-Stoianoff; Alvaro Peix; Encarna Velázquez; Pedro F. Mateos; Maria Rita Scotti
- Source:
- Science of the total environment 2017 v.577 pp. 202-211
- ISSN:
- 0048-9697
- Subject:
- Burkholderia; Melinis minutiflora; Mimosa; bacteria; biodiversity; carbon nitrogen ratio; chemical speciation; ecosystems; fertilizer analysis; fertilizer application; fires; grasses; indigenous species; invasive species; leaves; nitrogen; nitrogen content; nitrogen fertilizers; nitrogen fixation; soil; soil analysis; soil fertility; stable isotopes; Brazil
- Abstract:
- ... The Serra do Rola Moça State Park (PESRM) in Minas Gerais State, Brazil is a preserved site representative of the campo rupestre biome over an ironstone outcrop that has a high level of plant diversity. Almost 60% of this grassy field has been invaded by the exotic molasses grass (Melinis minutiflora), which constitutes a severe threat to the biodiversity and survival of this biome, particularly d ...
- DOI:
- 10.1016/j.scitotenv.2016.10.162
- https://doi.org/10.1016/j.scitotenv.2016.10.162
- Author:
- A. Thomazini; E.S. Mendonça; I.M. Cardoso; M.L. Garbin
- Source:
- Geoderma regional 2015 v.5 pp. 15-24
- ISSN:
- 2352-0094
- Subject:
- soil conservation; soil temperature; nitrogen; agroforestry; soil organic matter; soil quality; principal component analysis; Coffea arabica; microbial biomass; rain forests; carbon; soil microorganisms; carbon nitrogen ratio; soil water; land cover; emissions; ecosystems; wet season; Brazil
- Abstract:
- ... Land cover change and implementation of different management practices can greatly affect the global carbon (C) budget and soil quality. The objective of this study was to quantify the effect of different management practices under representative agroforestry and full sun coffee systems on (i) soil organic matter and CO2–C emissions in dry and rainy seasons and (ii) to determine which management s ...
- DOI:
- 10.1016/j.geodrs.2015.02.003
- https://doi.org/10.1016/j.geodrs.2015.02.003
- Author:
- C. E. P. Cerri; K. Coleman; D. S. Jenkinson; M. Bernoux; R. Victoria; C. C. Cerri
- Source:
- Soil Science Society of America journal 2003 v.67 no.6 pp. 1879-1887
- ISSN:
- 0361-5995
- Subject:
- agricultural management; basins; bulk density; carbon; carbon nitrogen ratio; carbon sequestration; clay fraction; climate change; ecosystems; forest soils; microbial biomass; model validation; models; pastures; ranching; tropical forests; Amazonia; Brazil
- Abstract:
- ... Conversion of tropical forest to agricultural management has important implications for C storage in soils and global climate change. The Nova Vida Ranch in the Western Brazilian Amazon basin provided a unique opportunity to study the conversion of tropical forests to pastures established in 1989, 1987, 1983, 1979, 1972, 1951, and 1911, in comparison with uncleared forest. Soils were analyzed for ...
- DOI:
- 10.2136/sssaj2003.1879
- https://doi.org/10.2136/sssaj2003.1879