Patterns of vegetation and soil properties in a beaver-created wetland located on the Coastal Plain of Virginia

2018 ◽  
Vol 14 (2) ◽  
pp. 209-219 ◽  
Author(s):  
Suzanne Dee ◽  
Alicia Korol ◽  
Changwoo Ahn ◽  
Jung A. Lee ◽  
Mary Means
Author(s):  
Ramasamy Srinivasan ◽  
Dulal Chandra Nayak ◽  
Rajendran Gobinath ◽  
Subbanna Naveen Kumar ◽  
D. V. K. Nageswara Rao ◽  
...  

1993 ◽  
Vol 39 (2) ◽  
pp. 201-213 ◽  
Author(s):  
Jeffrey L. Howard ◽  
Dan F. Amos ◽  
W. Lee Daniels

AbstractA chronological sequence of soils formed on a series of alluvial depositional surfaces ranging in age from late-middle Miocene to late Pleistocene was characterized to clarify soil-geomorphic relations and provide a basis for allostratigraphic subdivision of the inner Coastal Plain. On Quaternary river terraces, Ultic Hapludalfs containing abundant weatherable mineral species and clast types are estimated to have formed in 60,000-120,000 yr, whereas Typic Hapludults greatly depleted in weatherable minerals and showing strong weathering of clast types are estimated to be 700,000-1,600,000 yr old. Typic Paleudults with incipient plinthite, duripan, and ferricrete development characterize interfluves that have been little eroded since early Pliocene time (3.4-5.3 myr ago). Typic-Plinthic Paleudults with intense weathering of siliceous clasts and moderate to strong duripan and ferricrete development are found on surfaces that formed near the beginning of late Miocene time (10.8-13.0 myr ago). Chemical weathering in the chronosequence may be classified into three progressive stages: (1) decomposition of unstable sand- and silt-sized minerals into a mixed (stable + unstable) clay-mineral suite (stable Fe + Al/Si bulk chemical composition, < 106 yr); (2) transformation of mixed clay-mineral suite into a stable suite (increasing Fe + Al/Si bulk chemical composition, 106 - 107 yr); and (3) transformation of stable suite into ultrastable clay-mineral suite (increasing Fe/Si bulk composition, > 107 yr). Not all soil properties show unidirectional development, nor is a steady state of pedon development observed even after approximately 107 yr of chemical weathering. Soil development in the chronosequence is episodic. The transition from one phase to the next is marked by a change in rate, and sometimes a reversal in the direction, of development of one or more soil properties.


Author(s):  
Utin U. E ◽  
Essien G. E

A study was conducted to determine the effects of slope position and fertilizer type on soil properties and growth of maize (Zea mays) on Coastal Plain Sands of Akwa Ibom State, Nigeria. Results obtained showed that soils of lower slope (LS) had the highest contents of clay and silt compared with those of upper slope (US) position. Bulk density of the upper slope soil and that of the middle slope (MS) soils were significantly higher (P≤0.05) than that of LS soil and subsequently, total porosity and saturated hydraulic conductivity (Ksat) increased downslope. Bulk density of soils that received poultry manure (PM) and NPK+PM were significantly reduced compared to those of NPK and control while total porosity and Ksat of soils that received PM and NPK+PM were significantly higher (P≤0.05) than those of NPK and control. Soils of LS had highest pH, organic carbon, total nitrogen, available phosphorus, ECEC compared to those of MS and US. The application of poultry manure yielded increase in soil pH, soil organic carbon, total nitrogen, available phosphorus and ECEC when compared to soils of NPK and control. Growth of maize obtained with LS were consistently higher than those of the MS and US soils. Soils of LS that received NPK and NPK+PM had consistently similar maize growth, higher than other combinations of slope position and fertilizer type. The complementary application of poultry manure and NPK 15:15:15 can be the best option for increasing the fertility of soils with varying slope positions on Coastal Plain Sands.


2017 ◽  
Vol 404 ◽  
pp. 344-353 ◽  
Author(s):  
Charles M. Neaves ◽  
W. Michael Aust ◽  
M. Chad Bolding ◽  
Scott M. Barrett ◽  
Carl C. Trettin ◽  
...  

2002 ◽  
Vol 94 (6) ◽  
pp. 1305-1316 ◽  
Author(s):  
Richard M. Johnson ◽  
Robert G. Downer ◽  
Judith M. Bradow ◽  
Philip J. Bauer ◽  
E. John Sadler

Author(s):  
Chukwu E. D. ◽  
Udoh. B. T. ◽  
Akpan U. S. ◽  
Nnabuihe E. C. ◽  
Okoli N. H.

2010 ◽  
Vol 74 (1) ◽  
pp. 258-271 ◽  
Author(s):  
M.R. Levi ◽  
J.N. Shaw ◽  
C.W. Wood ◽  
S.M. Hermann ◽  
E.A. Carter ◽  
...  

2014 ◽  
Vol 296 ◽  
pp. 661-669 ◽  
Author(s):  
Lin Wang ◽  
Neil Coles ◽  
Chunfa Wu ◽  
Jiaping Wu

Sign in / Sign up

Export Citation Format

Share Document