Biomass, Carbon, and Nutrient Dynamics of Secondary Forests in a Humid Tropical Region of Mexico

Ecology ◽  
1999 ◽  
Vol 80 (6) ◽  
pp. 1892 ◽  
Author(s):  
R. Flint Hughes ◽  
J. Boone Kauffman ◽  
Victor J. Jaramillo
Keyword(s):  
Nutrient Dynamics ◽  
Tropical Region ◽  
Secondary Forests ◽  
Biomass Carbon

BIOMASS, CARBON, AND NUTRIENT DYNAMICS OF SECONDARY FORESTS IN A HUMID TROPICAL REGION OF MÉXICO

Ecology ◽  
1999 ◽  
Vol 80 (6) ◽  
pp. 1892-1907 ◽  
Author(s):  
R. Flint Hughes ◽  
J. Boone Kauffman ◽  
Víctor J. Jaramillo
Keyword(s):  
Nutrient Dynamics ◽  
Tropical Region ◽  
Secondary Forests ◽  
Biomass Carbon

Trophic interactions in soils as they affect energy and nutrient dynamics. IV. Flows of metabolic and biomass carbon

1977 ◽  
Vol 4 (4) ◽  
pp. 373-380 ◽  
Author(s):  
D. C. Coleman ◽  
R. V. Anderson ◽  
C. V. Cole ◽  
E. T. Elliott ◽  
L. Woods ◽  
...  
Keyword(s):  
Trophic Interactions ◽  
Nutrient Dynamics ◽  
Biomass Carbon

scholarly journals Forest Structure, Nutrients, and Pentaclethra macroloba Growth after Deforestation of Costa Rican Lowland Forests

ISRN Ecology ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Daniela J. Shebitz ◽  
William Eaton
Keyword(s):  
Nutrient Dynamics ◽  
Secondary Forest ◽  
Leguminous Plant ◽  
Primary Forest ◽  
Secondary Forests ◽  
Ecosystem Recovery ◽  
Neotropical Forests ◽  
Vegetation Diversity ◽  
Organic C ◽  
Relative Contribution

Succession following deforestation in Neotropical forests has been investigated extensively, yet rarely have studies connected nutrient dynamics with vegetation. This study was conducted in lowland wet forests of Maquenque, Costa Rica. The objectives were (1) to compare carbon (C), nitrogen (N), and phosphorus (P) characteristics and understory vegetation diversity between regenerating forests and primary forests; and (2) to use these variables to evaluate P. macroloba’s successional role. Four 300 m2 plots were established in primary and secondary forests where P. macroloba was the dominant N-fixing tree. Soil and vegetation data were collected from 2008 to 2010. Values of indicators of C, N, and P cycle activity were generally greater in primary than in secondary forest soils. Efficiency of organic C use and the relative contribution of respiration and organic C to soil biomass were also greater in the primary forest. These trends corresponded with greater richness, biomass, and cover of total and leguminous plant species, greater volume of P. macroloba in primary stands, and greater density of P. macroloba in secondary stands. As cleared regions of former primary forest regenerate, P. macroloba is the important dominant N-fixing tree and a critical driver of C, N, and P recuperation and ecosystem recovery.

scholarly journals Nutrient dynamics in tropical rivers, estuarine-lagoons, and coastal ecosystems along the eastern Hainan Island

2013 ◽  
Vol 10 (6) ◽  
pp. 9091-9147 ◽  
Author(s):  
R. H. Li ◽  
S. M. Liu ◽  
Y. W. Li ◽  
G. L. Zhang ◽  
J. L. Ren ◽  
...  
Keyword(s):  
Nutrient Dynamics ◽  
Sea Water ◽  
Inorganic Nitrogen ◽  
River Estuary ◽  
Hainan Island ◽  
Coastal Ecosystems ◽  
Particulate Phosphorus ◽  
Nutrient Concentrations ◽  
Tropical Region ◽  
Nutrient Inputs

Abstract. Nutrient dynamics were studied along the eastern Hainan Island based on field observations during 2006–2009, to understand nutrient biogeochemical processes and to have an overview of human perturbations on coastal ecosystems in this tropical region. The concentrations of nutrients in the rivers had seasonal variations enriched with dissolved inorganic nitrogen (DIN). High riverine concentrations of nitrate were mainly originated from agricultural fertilizer input. The ratios of DIN : PO43− ranged from 37 to 1063, suggesting preferential PO43− relative to nitrogen in the rivers. The areal yields of dissolved silicate (DSi) varied from 76 to 448 × 103 mol km−2 yr−1 due to erosion over the drainage area, inducing high levels of DSi among worldwide tropical systems. Aquaculture ponds contained high concentrations of NH4+ (up to 157 μM) and DON (up to 130 μM). Particulate phosphorus concentrations (0.5 ∼1.4 μM) were in lower level comparied with estuaries around the world. Particulate silicate levels in rivers and lagoons were lower than global average level. Nutrient biogeochemistry in coastal areas were affected by human activities (e.g. aquaculture, agriculture), as well as natural events such as typhoon. Nutrient concentrations were low because open sea water dispersed land-derived nutrients. Nutrient budgets were built based on a steady-state box model, which showed that riverine fluxes would be magnified by estuarine processes (e.g. regeneration, desorption) in the Wenchanghe/Wenjiaohe Estuary, Wanquan River estuary, and the Laoyehai Lagoon except in the Xiaohai Lagoon. Riverine and groundwater input were the major sources of nutrients to the Xiaohai Lagoon and the Laiyehai Lagoon, respectively. Riverine input and aquaculture effluent were the major sources of nutrients to the eastern coastal of Hainan Island. Nutrient inputs to the coastal ecosystem can be increased by typhoon-induced runoff of rainwater, and phytoplankton bloom in the sea would be caused.

scholarly journals Dinamika Hara Gambut Pada Penggunaan Lahan Hutan Sekunder, Semak Dan Kebun Kelapa Sawit

2019 ◽  
Vol 9 (3) ◽  
pp. 692-699
Author(s):  
Heru Bagus Pulunggono ◽  
Syaiful Anwar ◽  
Budi Mulyanto ◽  
Supiandi Sabiham
Keyword(s):  
Oil Palm ◽  
Sampling Method ◽  
Nutrient Dynamics ◽  
Secondary Forest ◽  
Dry Season ◽  
Major Influence ◽  
Secondary Forests ◽  
Wet Season ◽  
The Status ◽  
Macro Nutrients

Peat nutrient dynamics research was intended to study the characteristics and distribution of macro nutrients in peat water and peat in secondary forests, shrubs and oil palm plantations. This research was conducted with purposive sampling method. Observations on oil palm plantations were carried out at three ages of oil palm (5, 12, and 16 years). Secondary forest and shrub peatlands were used as a comparison. Sampling of peat water and peat was carried out during the rainy and dry season, at four distances from the collection drain (25, 50, 75, and 150 m). The results showed that nutrient levels in peat water during the dry season were greater than the wet season. The status of peat water and peat nutrients in secondary forests and shrubs is relatively the same as that of oil palm plantations that were fertilized. Seasonal, land use and distance from the collection channel differences did not have a major influence on the distribution and characteristics of macro nutrients on peat. The macro nutrients content of peat water and peat, however, showed an increase with the distance from the collection channel. 

Syntaxonomy of mid-successional stages of secondary forests of the central elevated part of the Southern Urals

2012 ◽  
pp. 109-134
Author(s):  
P. S. Shirokikh ◽  
A. M. Kunafin ◽  
V. B. Martynenko
Keyword(s):  
Boreal Forests ◽  
Floristic Composition ◽  
Southern Urals ◽  
Secondary Forests ◽  
Natural Forests ◽  
The Southern Urals ◽  
Active Growth ◽  
Tree Layer ◽  
Shade Tolerant Species ◽  
Successional Stages

The secondary birch and aspen forests of middle stages of succession of the central elevated part of the Southern Urals are studied. 4 subassociations, 1 community, and 7 variants in the alliances of Aconito-Piceion and Piceion excelsae are allocated. It is shown that the floristic composition of aspen and birch secondary forests in the age of 60—80 years is almost identical to the natural forests. However, a slight increase the coenotical role of light-requiring species of grasslands and hemiboreal forests in the secondary communities of the class Brachypodio-Betuletea was noticed as well as some reduction of role the shade-tolerant species of nemoral complex and species of boreal forests of the class Vaccinio-Piceetea. Dominant tree layer under the canopy of secondary series is marked by an active growth of natural tree species.

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