Carbon in forest species of the Atlantic Forest as an indicator of stocks and quality

The objective is to quantify the carbon content (C) of the reservoirs of plant biomass of different species in a fragment of the Atlantic Forest in Northeast Brazil. Ten species of high absolute density were selected. We sampled biomass from the leaf and wood compartments of each species to determine the C content. There was a difference in leaf C levels between species. The C content in leaves of species varied between 451.4 and 456.7 g kg-1. The C content of the wood of species varied between 451.7 and 456.8 g kg-1. The group formed by the families Burseraceae, Moraceae, and Sapotaceae showed higher average levels of C in leaves. The Burseraceae family had the highest average C content in the species' wood. The use of a pre-established carbon content (500 g kg-1) may generate inconsistent estimates higher than the real values for the species and families in an Atlantic Forest environment. We suggest that C stock estimates use specific levels for species and/or families, contributing to a more realistic estimate of C storage patterns in the shoot biomass of Atlantic Forest species.Keywords: Carbon concentration; Carbon sequestration; Tropical Rainforest.

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Contrasting effects of fire on populations of two small rodent species in fragments of Atlantic Forest in Brazil

Journal of Tropical Ecology ◽

10.1017/s0266467403001093 ◽

2004 ◽

Vol 20 (2) ◽

pp. 225-228 ◽

Cited By ~ 17

Author(s):

Marcos de Souza Lima Figueiredo ◽

Fernando Antonio dos Santos Fernandez

Keyword(s):

Atlantic Forest ◽

Feedback System ◽

Rodent Species ◽

Primary Forest ◽

Small Rodent ◽

Forest Species ◽

The Core ◽

Higher Temperature ◽

Disturbed Habitats

Habitat fragmentation causes a sharp increase in the forested area affected by edge effects (Murcia 1995). Compared with the core of the forest, edges present higher litterfall rates, air and soil humidity reduction, higher temperature and increased wind incidence (Bierregaard et al. 1992, Didham & Lawton 1999, Laurance et al. 1998, Matlack 1993). These features of edges may increase the probability of fire occurrence, especially if the surrounding vegetation is composed of grasses (D'Antonio & Vitousek 1992, Freifelder et al. 1998). After a fire, the damaged edge will grow substantial amounts of herbaceous vegetation, extending the inflammable area into the forest, and thereby creating a positive feedback system of fire susceptibility and intensity (Cochrane & Schulze 1999, Cochrane et al. 1999). Fires may affect the structure and composition of the vegetation (Cochrane & Schulze 1999, Didham & Lawton 1999, Sanaiotti & Magnusson 1995), favouring, in the long-term, the dominance of the community by species characteristic of disturbed habitats and making the habitat unsuitable to primary forest species (Malcolm 1994, Possingham et al. 1994). Unfortunately, there are few studies on the effects of fires on neotropical small-mammal populations (Borchert & Hansen 1983, Ojeda 1989, Vieira & Marinho-Filho 1998). The objective of this study was to analyse the influence of a fire on populations of two rodent species, Akodon cursor (Winge) and Oecomys concolor (Wagner) in two fragments of Atlantic Forest in Brazil.

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Carbon, nitrogen and phosphorus storage in subtropical seagrass meadows: examples from Florida Bay and Shark Bay

Marine and Freshwater Research ◽

10.1071/mf12101 ◽

2012 ◽

Vol 63 (11) ◽

pp. 967 ◽

Cited By ~ 52

Author(s):

James W. Fourqurean ◽

Gary A. Kendrick ◽

Laurel S. Collins ◽

Randolph M. Chambers ◽

Mathew A. Vanderklift

Keyword(s):

Organic Carbon ◽

Carbon Content ◽

Primary Productivity ◽

Florida Bay ◽

Organic Carbon Content ◽

Nitrogen And Phosphorus ◽

Organic C ◽

Shark Bay ◽

Seagrass Meadows ◽

C Storage

Seagrass meadows in Florida Bay and Shark Bay contain substantial stores of both organic carbon and nutrients. Soils from both systems are predominantly calcium carbonate, with an average of 82.1% CaCO3 in Florida Bay compared with 71.3% in Shark Bay. Soils from Shark Bay had, on average, 21% higher organic carbon content and 35% higher phosphorus content than Florida Bay. Further, soils from Shark Bay had lower mean dry bulk density (0.78 ± 0.01 g mL–1) than those from Florida Bay (0.84 ± 0.02 mg mL–1). The most hypersaline regions of both bays had higher organic carbon content in surficial soils. Profiles of organic carbon and phosphorus from Florida Bay indicate that this system has experienced an increase in P delivery and primary productivity over the last century; in contrast, decreasing organic carbon and phosphorus with depth in the soil profiles in Shark Bay point to a decrease in phosphorus delivery and primary productivity over the last 1000 y. The total ecosystem stocks of stored organic C in Florida Bay averages 163.5 MgCorg ha–1, lower than the average of 243.0 MgCorg ha–1 for Shark Bay; but these values place Shark and Florida Bays among the global hotspots for organic C storage in coastal ecosystems.

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Short-Term Decomposition and Nutrient-Supplying Ability of Sewage Sludge Digestate, Digestate Compost, and Vermicompost on Acidic Sandy and Calcareous Loamy Soils

Agronomy ◽

10.3390/agronomy11112249 ◽

2021 ◽

Vol 11 (11) ◽

pp. 2249

Author(s):

Nikolett Uzinger ◽

Orsolya Szécsy ◽

Nóra Szűcs-Vásárhelyi ◽

István Padra ◽

Dániel Benjámin Sándor ◽

...

Keyword(s):

Organic Matter ◽

Sewage Sludge ◽

Organic Carbon ◽

Carbon Content ◽

Plant Biomass ◽

Test Plant ◽

Organic Carbon Content ◽

Short Term ◽

Mineral N ◽

Average Residual

Organic waste and the compost and vermicompost derived from it may have different agronomic values, but little work is available on this aspect of sewage sludge. A 75-day pot experiment with perennial ryegrass (Lolium perenne) as the test plant aimed to investigate the fertiliser value and organic matter replenishment capacity of digested sewage sludge (DS) and the compost (COM) and vermicompost (VC) made from it, applied in 1% and 3% doses on acidic sand and calcareous loam. The NPK content and availability, changes in organic carbon content and plant biomass, and the efficiency of the amendments as nitrogen fertilisers were investigated. The final average residual carbon content for DS, COM, and VC was 35 ± 34, 85 ± 46, and 55 ± 46%, respectively. The organic carbon mineralisation rate depended on the soil type. The additives induced significant N mineralisation in both soils: the average increment in mineral N content was 1.7 times the total added N on acidic sand and 4.2 times it on calcareous loam for the 1% dose. The agronomic efficiency of COM and VC as fertilisers was lower than that of DS. In the short term, DS proved to be the best fertiliser, while COM was the best for organic matter replenishment.

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ANALISIS TINGKAT PENYIMPANAN SENYAWA KARBON (C-Stock) PADA VEGETASI HUTAN MANGROVE BERDASARKAN PERBEDAAN SUBTRAT DI PULAU SAPARUA KABUPATEN MALUKU TENGAH

Biopendix: Jurnal Biologi, Pendidikan dan Terapan ◽

10.30598/biopendixvol5issue1page8-12 ◽

2019 ◽

Vol 5 (1) ◽

pp. 8-12

Author(s):

Patriks Sitaniapessy ◽

Pamela Mercy Papilaya

Keyword(s):

Carbon Content ◽

Confidence Level ◽

Total Carbon ◽

Survey Method ◽

Biomass Estimation ◽

Mangrove Forests ◽

Estimation Formula ◽

Carbon Compounds ◽

C Stock ◽

The Difference

Background: Analysis of the level of storage of Carbon compounds (C-Stock) on mangrove forest vegetation based on differences in substrate on Saparua Island, Central Maluku Regency. This study aims to determine the amount of carbon content and the difference in carbon content stored in mangrove forests. Method: This study used a survey method through direct observation in the field and analysis of sample weight in the laboratory. The data obtained were analyzed using the biomass estimation formula and carbon content and statistical equation to determine the difference in carbon content at each station. Results: From the results of the study obtained total carbon in station I was 3.498351 tons / ha, station II was 0.180750 tons / ha and station III was 16.727136 tons / ha. Conclusion: With the difference of each station based on the BNT Test with a confidence level of 99% showing the value of the difference of 20.58, while the BNT test of the confidence level of 95% shows the difference in value of 13.59.

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AVALIAÇÃO DA DIVERSIDADE DE ESPÉCIES NATIVAS PRODUZIDAS NOS VIVEIROS FLORESTAIS DO ESTADO DO RIO DE JANEIRO

FLORESTA ◽

10.5380/rf.v44i3.31910 ◽

2014 ◽

Vol 44 (3) ◽

pp. 369 ◽

Cited By ~ 1

Author(s):

Jorge Makhlouta Alonso ◽

Paulo Sérgio Dos Santos Leles ◽

Telmo Borges Silveira Filho ◽

Carlos Alberto Bernardo Mesquita ◽

Marcos Lima Pereira ◽

...

Keyword(s):

Atlantic Forest ◽

Rio De Janeiro ◽

Native Species ◽

Forest Restoration ◽

The State ◽

Forest Species ◽

Mata Atlântica ◽

Production Manager ◽

Mata Atlantica ◽

Forest Nurseries

O objetivo deste trabalho foi avaliar a diversidade de espécies florestais nativas produzidas nos viveiros do estado do Rio de Janeiro. O levantamento e diagnóstico foram realizados durante os meses de fevereiro, março e abril de 2010, sendo incluídos os viveiros que produziam mudas de espécies florestais da Mata Atlântica. O trabalho de campo consistiu em visitas a 70 viveiros florestais, nos quais foi requerida a lista das espécies produzidas e realizada entrevista com o responsável, sendo preenchido um questionário englobando diversos temas relacionados à produção de mudas. Foram observadas 277 espécies florestais nativas da Mata Atlântica sendo produzidas nos viveiros, que, em média, trabalham com 56 espécies nativas. A diversidade total de espécies florestais da Mata Atlântica produzidas nos viveiros do Estado do Rio de Janeiro é baixa, assim como a diversidade média, já que mais da metade dos viveiros trabalha com uma listagem de 50 ou menos espécies, número insuficiente considerando a diversidade de espécies florestais presentes nas diferentes formações vegetais do estado.Palavras-chave: Mudas florestais; restauração florestal; Mata Atlântica. AbstractAssessment of diversity of native species produced in forest nurseries of Rio de Janeiro State. The objective of this paper was to evaluate the diversity of native species produced by nurseries in the State of Rio de Janeiro. The diagnostic and survey were conducted during the months of February, March and April of the year 2010, the research included all nurseries that produced seedlings of Atlantic Forest species. The fieldwork consisted of visits to the 70 surveyed nurseries, in which a list of the species produced in the nursery was requested and the seedling production manager was interviewed, filling in a questionnaire covering various topics related to seedlings production. We observed 277 forest species native from the Atlantic Forest produced in the nurseries. In average, the nurseries produce 56 different native species. The total diversity of native species produced in the State of Rio de Janeiro is low, as well as the mean diversity, since more than half of the nurseries work with a list of 50 or fewer species, what is insufficient considering the diversity of forest species that occur in the different vegetation types of the state.Keywords: Forest seedlings; forest restoration; Atlantic Forest.

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Predation of the Buffy-fronted Seedeater Sporophila frontalis (Aves: Emberizidae) on Merostachys neesii (Poaceae: Babusoideae) seeds during a masting event in the Atlantic forest

Biota Neotropica ◽

10.1590/s1676-06032011000300033 ◽

2011 ◽

Vol 11 (3) ◽

pp. 407-411 ◽

Cited By ~ 5

Author(s):

César Cestari ◽

Cláudio João Bernardi

Keyword(s):

Atlantic Forest ◽

Predation Rate ◽

The Other ◽

Southeastern Brazil ◽

Forest Species ◽

Forest Reserve ◽

Point Counts ◽

Other Hand ◽

Predatory Impact

The Buffy-fronted Seedeater Sporophila frontalis (Verreaux, 1869) is frequently found foraging on seeds during ephemeral masting events of bamboos in the Atlantic forest. In the present study, we analyzed the predation activity of S. frontalis on seeds of Merostachys neesii Rupr. during a masting event in an Atlantic forest reserve on southeastern Brazil. We conducted point counts in spots with M. neesii and in spots without bamboos along trails to determine the presence of S. frontalis on M. neesii clumps. Additionally, focal observations on bamboo clumps and seed traps were used to verify the predatory impact of S. frontalis on M. neesii seeds. S. frontalis was present in 6 out 18 point counts in M. neesii clumps. The seedeater behaved territorially in bamboo clumps and presented a mean predation rate of 1.10 bamboo seeds/minute. Seed traps had up to 80% of the seeds predated. The large amount of seeds available during bamboo masting events probably contributes to the maintenance of wandering populations of S. frontalis in the Atlantic forest. On the other hand, the predation of seeds by S. frontalis may reduce the reproductive germination and the propagation of the bamboos whose growth may in turn negatively affect the establishment of other forest species.

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Effect of Biochar and Irrigation on Soybean-Rhizobium Symbiotic Performance and Soil Enzymatic Activity in Field Rhizosphere

Agronomy ◽

10.3390/agronomy9100626 ◽

2019 ◽

Vol 9 (10) ◽

pp. 626 ◽

Cited By ~ 4

Author(s):

Ma ◽

Egamberdieva ◽

Wirth ◽

Bellingrath-Kimura

Keyword(s):

Plant Biomass ◽

N Uptake ◽

Critical Factor ◽

Hydrolytic Activity ◽

N Fertilizer ◽

Nutrient Concentrations ◽

Shoot Biomass ◽

Soil Enzymatic Activity ◽

Nodule Number ◽

Soil Variables

Nitrogen (N) in soybean (Glycine max L.) plants derived from biological nitrogen fixation was shown to be a sustainable N resource to substitute for N fertilizer. However, the limited water supply in sandy soil is a critical factor for soybean nodulation and crop growth. This study investigated the potential mechanism of the effect of biochar and irrigation on the soybean-Rhizobium symbiotic performance and soil biological activity in a field trial. In the absence of N fertilizer, 10 t ha−1 of black cherry wood-derived biochar were applied under irrigated and rainfed conditions on an experimental, sandy field site. The plant biomass, plant nutrient concentrations, nodule number, nodule leghemoglobin content, soil enzyme activities, and soil-available nutrients were examined. Our results show that biochar application caused a significant increase in the nodule number by 35% in the irrigated condition. Shoot biomass and soil fluorescein diacetate hydrolytic activity were significantly increased by irrigation in comparison to the rainfed condition. The activity of soil protease reduced significantly, by 8%, with the biochar application in the irrigated condition. Further, a linear correlation analysis and redundancy analysis performed on the plant, nodule, and soil variables suggested that the biochar application may affect soybean N uptake in the sandy field. Nodulation was enhanced with biochar addition, however, the plant N concentration and nodule Lb content remained unaffected.

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Biogeochemical Processes of C and N in the Soil of Mangrove Forest Ecosystems

Forests ◽

10.3390/f11050492 ◽

2020 ◽

Vol 11 (5) ◽

pp. 492 ◽

Cited By ~ 2

Author(s):

Yo-Jin Shiau ◽

Chih-Yu Chiu

Keyword(s):

Climate Change ◽

Mangrove Forest ◽

Plant Biomass ◽

Chemical Elements ◽

Soil Conditions ◽

Mangrove Forests ◽

Biogeochemical Processes ◽

C Storage ◽

Air Temperatures ◽

C And N

The mangrove forest provides various ecosystem services in tropical and subtropical regions. Many of these services are driven by the biogeochemical cycles of C and N, and soil is the major reservoir for these chemical elements. These cycles may be influenced by the changing climate. The high plant biomass in mangrove forests makes these forests an important sink for blue C storage. However, anaerobic soil conditions may also turn mangrove forests into an environmentally detrimental producer of greenhouse gases (such as CH4 and N2O), especially as air temperatures increase. In addition, the changing environmental factors associated with climate change may also influence the N cycles and change the patterns of N2 fixation, dissimilatory nitrate reduction to ammonium, and denitrification processes. This review summarizes the biogeochemical processes of C and N cycles in mangrove forest soils based on recently published studies, and how these processes may respond to climate change, with the aim of predicting the impacts of climate change on the mangrove forest ecosystem.

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Continuous and discontinuous variation in ecosystem carbon stocks with elevation across a treeline ecotone

Biogeosciences ◽

10.5194/bg-12-1615-2015 ◽

2015 ◽

Vol 12 (5) ◽

pp. 1615-1627 ◽

Cited By ~ 10

Author(s):

J. D. M. Speed ◽

V. Martinsen ◽

A. J. Hester ◽

Ø. Holand ◽

J. Mulder ◽

...

Keyword(s):

Large Scale ◽

Mineral Soil ◽

Livestock Grazing ◽

Treeline Ecotone ◽

Soil C ◽

C Storage ◽

C Stocks ◽

C Stock ◽

The Impact ◽

Forest Line

Abstract. Treelines differentiate vastly contrasting ecosystems: open tundra from closed forest. Treeline advance has implications for the climate system due to the impact of the transition from tundra to forest ecosystem on carbon (C) storage and albedo. Treeline advance has been seen to increase above-ground C stocks as low vegetation is replaced with trees but decrease organic soil C stocks as old carbon is decomposed. However, studies comparing across the treeline typically do not account for elevational variation within the ecotone. Here we sample ecosystem C stocks along an elevational gradient (970 to 1300 m), incorporating a large-scale and long-term livestock grazing experiment, in the southern Norwegian mountains. We investigate whether there are continuous or discontinuous changes in C storage across the treeline ecotone, and whether these are modulated by grazing. We find that vegetation C stock decreases with elevation, with a clear breakpoint between the forest line and treeline above which the vegetation C stock is constant. C stocks in organic surface horizons of the soil were higher above the treeline than in the forest, whereas C stocks in mineral soil horizons are unrelated to elevation. Total ecosystem C stocks also showed a discontinuous elevational pattern, increasing with elevation above the treeline (8 g m−2 per metre increase in elevation), but decreasing with elevation below the forest line (−15 g m−2 per metre increase in elevation), such that ecosystem C storage reaches a minimum between the forest line and treeline. We did not find any effect of short-term (12 years) grazing on the elevational patterns. Our findings demonstrate that patterns of C storage across the treeline are complex, and should be taken account of when estimating ecosystem C storage with shifting treelines.

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Effects of earthworms and mycorrhizal fungi on the growth of the medicinal herb Calendula officinalis (Asteraceae)

Plant Soil and Environment ◽

10.17221/189/2011-pse ◽

2011 ◽

Vol 57 (No. 11) ◽

pp. 499-504 ◽

Cited By ~ 16

Author(s):

J.G. Zaller ◽

F. Saccani ◽

T. Frank

Keyword(s):

Biomass Production ◽

Mycorrhizal Fungi ◽

Plant Biomass ◽

Arbuscular Mycorrhizal ◽

Lumbricus Terrestris ◽

Leaf Length ◽

Stem Length ◽

Shoot Biomass ◽

Calendula Officinalis ◽

Amf Inoculation

  Both earthworms and symbiotic arbuscular mycorrhizal fungi (AMF) often co-occurr in ecosystems, however very little is known on their interrelationships. Here we tested to what extent earthworms (Annelida) or AMF (Glomales) separately or in combination affect the growth of the pharmaceutical plant species, pot marigold (Calendula officinalis, Asteraceae). We conducted a greenhouse experiment using non-sterilized field soil where we manipulated the factors earthworms (addition/no addition of the vertical burrowing species Lumbricus terrestris) and AMF (addition/no addition of a mix of the four Glomus taxa G. geosporum, G. mosseae, G. intraradices, G. claroideum). Leaf length and flower stem length was significantly increased by earthworms but remained unaffected by additional AMF. The longest leaves and flower stems were observed in pots containing earthworms but no additional AMF. The number of flower buds was unaffected by earthworms but marginally significantly increased by AMF. Plant shoot biomass production was significantly higher when earthworms were present; AMF inoculation had no effect on biomass production. Root biomass production and total plant biomass production remained unaffected by earthworms or AMF. These results indicate that in soil already containing AMF earthworm addition primarily affects vegetative growth while additional AMF inoculation tended to affect reproductive plant parts.

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