scholarly journals Ecological and Environmental Aspects of Nutrient Cycling in the Atlantic Forest, Brazil

10.5772/64188 ◽  
2016 ◽  
Author(s):  
Márcio Viera ◽  
Marcos Vinicius Winckler Caldeira ◽  
Franciele Francisca Marmentini Rovani ◽  
Kallil Chaves Castro
Keyword(s):  
Nutrient Cycling ◽  
Atlantic Forest ◽  
Environmental Aspects

Litterfall mass and nutrient fluxes over an altitudinal gradient in the coastal Atlantic Forest, Brazil

2017 ◽  
Vol 33 (4) ◽  
pp. 261-269 ◽  
Author(s):  
Eráclito Rodrigues de Sousa-Neto ◽  
Sílvia Rafaela Machado Lins ◽  
Susian Christian Martins ◽  
Marisa de Cássia Piccolo ◽  
Maurício Lamano Ferreira ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Atlantic Forest ◽  
Altitudinal Gradient ◽  
Tropical Soils ◽  
Reproductive Organs ◽  
Northern Coast ◽  
Forest Types ◽  
Lowland Forest ◽  
Mass Fluxes ◽  
P Fluxes

Abstract:Litterfall is one of the most important pathways through which nutrients are recycled in the terrestrial biosphere. In tropical soils, which are generally low in essential nutrients such as phosphorus and cations, the flux of nutrients through litterfall is particularly important to sustaining CO2-uptake capacity; however, questions remain over the role of altitude in altering litter nutrient cycling rates among tropical forest ecosystems. Here we examine litterfall, carbon (C), nitrogen (N) and phosphorus (P) fluxes through litterfall over an altitudinal gradient in the coastal Atlantic Forest located on the northern coast of the State of São Paulo, Brazil. Litterfall was collected twice a month for 1 y (April 2007–March 2008) using 30 litter traps placed in four different forest types arrayed by altitude – coastal forest (sea level), lowland forest (50–200 m asl), submontane forest (300–500 m asl) and montane forest (1000 m asl). Litterfall mass-fluxes decreased with increasing altitude, from ~9 Mg ha−1 in lowland forests to 7 Mg ha−1 in higher-altitude ecosystems. Contribution of reproductive organs to litterfall was significantly greater in lower than in higher altitudes. Litterfall N and P fluxes were higher in the lowland forest vs. other forest types, pointing to strong altitudinal controls over nutrient cycling. Furthermore, nitrogen-use efficiency (NUE) was lower and litter δ15N was higher in the lowland site providing additional evidence for lack of N constraints to productivity in lowland of the south-eastern Atlantic Forest.

scholarly journals Seasonal pattern of nutrient cycling in the Atlantic Forest across a topographic gradient

2020 ◽  
Vol 48 (125) ◽  
Author(s):  
Jônio Pizzol Caliman ◽  
Tiago de Oliveira Godinho ◽  
Marcos Vinicius Winckler Caldeira ◽  
José Henrique Tertulino Rocha ◽  
Miles Louis Drury ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Atlantic Forest ◽  
Seasonal Pattern ◽  
Topographic Gradient

Effect of selective logging on forest structure and nutrient cycling in a seasonally dry Brazilian Atlantic forest

2006 ◽  
Vol 33 (3) ◽  
pp. 506-516 ◽  
Author(s):  
Dora Maria Villela ◽  
Marcelo T. Nascimento ◽  
Luiz Eduardo O. C. Aragao ◽  
Deborah M. da Gama
Keyword(s):  
Nutrient Cycling ◽  
Atlantic Forest ◽  
Forest Structure ◽  
Selective Logging ◽  
Brazilian Atlantic Forest ◽  
Seasonally Dry

scholarly journals Different Patterns Of Nutrient Cycling In Contiguous Phytophysiognomies Of Atlantic Forest, Brazil

2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Luis Fernando Tavares de Menezes ◽  
Rodrigo Camara de Souza ◽  
Marcos Gervasio Pereira ◽  
Fábio Ribeiro Pires ◽  
Bruno Santanna Fanticelle ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Atlantic Forest

Factors Related to Childhood Suicides

Crisis ◽  
2014 ◽  
Vol 35 (5) ◽  
pp. 292-300 ◽  
Author(s):  
Rebecca Soole ◽  
Kairi Kõlves ◽  
Diego De Leo
Keyword(s):  
Child Death ◽  
Behavioral Difficulties ◽  
Childhood And Adolescence ◽  
Environmental Aspects ◽  
Indigenous Children ◽  
External Causes Of Death ◽  
External Causes ◽  
Causes Of Deaths ◽  
Gender Asymmetry ◽  
Control Study

Background: Suicide among children under the age of 15 years is a leading cause of death. Aims: The aim of the current study is to identify demographic, psychosocial, and psychiatric factors associated with child suicides. Method: Using external causes of deaths recorded in the Queensland Child Death Register, a case-control study design was applied. Cases were suicides of children (10–14 years) and adolescents (15–17 years); controls were other external causes of death in the same age band. Results: Between 2004 and 2012, 149 suicides were recorded: 34 of children aged 10–14 years and 115 of adolescents aged 15–17 years. The gender asymmetry was less evident in child suicides and suicides were significantly more prevalent in indigenous children. Children residing in remote areas were significantly more likely to die by suicide than other external causes compared with children in metropolitan areas. Types of precipitating events differed between children and adolescents, with children more likely to experience family problems. Disorders usually diagnosed during infancy, childhood, and adolescence (e.g., ADHD) were significantly more common among children compared with adolescents who died by suicide. Conclusion: Psychosocial and environmental aspects of children, in addition to mental health and behavioral difficulties, are important in the understanding of suicide in this age group and in the development of targeted suicide prevention.

Nutrient cycling from theMusamother plant at various physiological stages to suckers as affected by spacing and sucker retention using tracer techniques

Fruits ◽  
2002 ◽  
Vol 57 (3) ◽  
pp. 143-151 ◽  
Author(s):  
Sajan Kurien ◽  
Paickattumana Suresh Kumar ◽  
Nerukavil Varieth Kamalam ◽  
Pallacken Abdul Wahid
Keyword(s):  
Nutrient Cycling ◽  
Tracer Techniques

Dereplication of Brazilian plants from Cerrado and Atlantic Forest using NMR virtual design and hyphenated techniques

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
I Castro-Gamboa ◽  
R Burgos ◽  
P Cardoso ◽  
F Carnevale ◽  
A Pilon ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Hyphenated Techniques ◽  
Virtual Design
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