Spatial Variability in Litterfall, Litter Standing Crop and Litter Quality in a Tropical Rain Forest Region

Biotropica ◽  
2014 ◽  
Vol 46 (4) ◽  
pp. 378-386 ◽  
Author(s):  
Scott A. Parsons ◽  
Robert A. Congdon ◽  
Luke P. Shoo ◽  
Vanessa Valdez-Ramirez ◽  
Stephen E. Williams
Keyword(s):  
Spatial Variability ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Standing Crop ◽  
Litter Quality ◽  
Forest Region ◽  
Litter Standing Crop

Spathodea campanulata (African tulip tree).

2021 ◽  
Author(s):  
Julissa Rojas-Sandoval ◽  
Pedro Acevedo-Rodríguez ◽  
Nick Pasiecznik
Keyword(s):  
West Coast ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Medium Size ◽  
Secondary Forests ◽  
The West ◽  
Forest Zone ◽  
Southern Sudan ◽  
Forest Region ◽  
Tulip Tree

Abstract S. campanulata is a medium-size tree up to 35 m tall and 175 cm in diameter. It is indigenous to Africa where it extends along the west coast from Ghana to Angola and inland across the tropical rain forest region to southern Sudan and Uganda. It grows naturally in secondary forests in the high forest zone and in deciduous transition and savanna forests. In Uganda, it is one of the trees that colonizes grasslands. It grows well in areas with an even distribution of rainfall but will tolerate a dry season of up to six months. It grows on a wide variety of sites, from poorly to excessively drained, but prefers fertile, deep and well-drained loams.

scholarly journals Changes in soil carbon and nutrients following six years of litter removal and addition in a tropical semi-evergreen rain forest

2016 ◽  
Author(s):  
Edmund Vincent John Tanner ◽  
Merlin William Alfred Sheldrake ◽  
Benjamin L. Turner
Keyword(s):  
Soil Carbon ◽  
Bulk Density ◽  
Rain Forest ◽  
Standing Crop ◽  
Total Carbon ◽  
Nutrient Concentrations ◽  
Litter Addition ◽  
Litter Removal ◽  
Litter Manipulation ◽  
Litter Standing Crop

Abstract. Increasing atmospheric CO2 and temperature may increase forest productivity, including litterfall, but the consequences for soil organic matter remain poorly understood. To address this, we measured soil carbon and nutrient concentrations at nine depths to 2 m after six years of continuous litter removal and litter addition in a semi-evergreen rain forest in Panama. Soils in litter addition plots, compared to litter removal plots, had higher pH and contained greater concentrations of KCl-extractable nitrate (both to 30 cm); Mehlich-III extractable phosphorus and total carbon (both to 20 cm); total nitrogen (to 15 cm); Mehlich-III calcium (to 10 cm); Mehlich-III magnesium and lower bulk density (both to 5 cm). In contrast, litter manipulation did not affect ammonium, manganese, potassium or zinc, and soils deeper than 30 cm did not differ for any nutrient. Comparison with previous analyses in the experiment indicates that overall the effect of litter manipulation on nutrient concentrations and the depth to which the effects are significant are increasing with time. To allow for changes in bulk density in calculation of changes in carbon stocks, we standardized total carbon and nitrogen on the basis of a constant mineral mass. For 200 kg m−2 of mineral soil (approximately the upper 20 cm of the profile) about 0.5 kg C m−2 was 'missing' from the litter removal plots, with a similar amount accumulated in the litter addition plots. There was an additional 0.4 kg C m−2 extra in the litter standing crop of the litter addition plots compared to the control. This increase in carbon in surface soil and the litter standing crop can be interpreted as a potential partial mitigation of the effects of increasing CO2 concentrations in the atmosphere.

scholarly journals Changes in soil carbon and nutrients following 6 years of litter removal and addition in a tropical semi-evergreen rain forest

2016 ◽  
Vol 13 (22) ◽  
pp. 6183-6190 ◽  
Author(s):  
Edmund Vincent John Tanner ◽  
Merlin W. A. Sheldrake ◽  
Benjamin L. Turner
Keyword(s):  
Soil Carbon ◽  
Bulk Density ◽  
Rain Forest ◽  
Standing Crop ◽  
Total Carbon ◽  
Nutrient Concentrations ◽  
Litter Addition ◽  
Litter Removal ◽  
Litter Manipulation ◽  
Litter Standing Crop

Abstract. Increasing atmospheric CO2 and temperature may increase forest productivity, including litterfall, but the consequences for soil organic matter remain poorly understood. To address this, we measured soil carbon and nutrient concentrations at nine depths to 2 m after 6 years of continuous litter removal and litter addition in a semi-evergreen rain forest in Panama. Soils in litter addition plots, compared to litter removal plots, had higher pH and contained greater concentrations of KCl-extractable nitrate (both to 30 cm); Mehlich-III extractable phosphorus and total carbon (both to 20 cm); total nitrogen (to 15 cm); Mehlich-III calcium (to 10 cm); and Mehlich-III magnesium and lower bulk density (both to 5 cm). In contrast, litter manipulation did not affect ammonium, manganese, potassium or zinc, and soils deeper than 30 cm did not differ for any nutrient. Comparison with previous analyses in the experiment indicates that the effect of litter manipulation on nutrient concentrations and the depth to which the effects are significant are increasing with time. To allow for changes in bulk density in calculation of changes in carbon stocks, we standardized total carbon and nitrogen on the basis of a constant mineral mass. For 200 kg m−2 of mineral soil (approximately the upper 20 cm of the profile) about 0.5 kg C m−2 was “missing” from the litter removal plots, with a similar amount accumulated in the litter addition plots. There was an additional 0.4 kg C m−2 extra in the litter standing crop of the litter addition plots compared to the control. This increase in carbon in surface soil and the litter standing crop can be interpreted as a potential partial mitigation of the effects of increasing CO2 concentrations in the atmosphere.

Non flying mammals and landscape changes in the tropical rain forest region of Los Tuxtlas, Mexico

Ecography ◽  
1994 ◽  
Vol 17 (3) ◽  
pp. 229-241 ◽  
Author(s):  
Alejandro Estrada ◽  
Rosamond Coates-Estrada ◽  
Dennis Meritt
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
Landscape Changes ◽  
Los Tuxtlas ◽  
Forest Region

Tropical Rain Forest and Climate Dynamics of the Atlantic Lowland, Southern Brazil, during the Late Quaternary

2001 ◽  
Vol 56 (3) ◽  
pp. 383-389 ◽  
Author(s):  
Hermann Behling ◽  
Raquel R. B. Negrelle
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
Late Quaternary ◽  
Climate Dynamics ◽  
Atlantic Rain Forest ◽  
Palynological Analysis ◽  
Forest Region ◽  
The Last Glacial Maximum ◽  
Insight Into ◽  
The Last Glacial

AbstractPalynological analysis of a core from the Atlantic rain forest region in Brazil provides unprecedented insight into late Quaternary vegetational and climate dynamics within this southern tropical lowland. The 576-cm-long sediment core is from a former beach-ridge “valley,” located 3 km inland from the Atlantic Ocean. Radio-carbon dates suggest that sediment deposition began prior to 35,000 14C yr B.P. Between ca. 37,500 and ca. 27,500 14C yr B.P. and during the last glacial maximum (LGM; ca. 27,500 to ca. 14,500 14C yr B.P.), the coastal rain forest was replaced by grassland and patches of cold-adapted forest. Tropical trees, such as Alchornea, Moraceae/Urticaceae, and Arecaceae, were almost completely absent during the LGM. Furthermore, their distributions were shifted at least 750 km further north, suggesting a cooling between 3°C and 7°C and a strengthening of Antarctic cold fronts during full-glacial times. A depauperate tropical rain forest developed as part of a successional sequence after ca. 12,300 14C yr B.P. There is no evidence that Araucaria trees occurred in the Atlantic lowland during glacial times. The rain forest was disturbed by marine incursions during the early Holocene period until ca. 6100 14C yr B.P., as indicated by the presence of microforaminifera. A closed Atlantic rain forest then developed at the study site.

The Effects of a Tropical rain Forest Cover on Airborne Gamma-Ray Spectrometry

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Enio B. Pereira ◽  
Daniel J.R. Nordemann
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
Forest Cover ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry

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