scholarly journals CHARACTERISTICS PHYSICAL PROPERTIES OF SOIL FOR CONSERVATION POND PLANNING IN KECAMATAN LIANG ANGGANG PEATLANDS

2017 ◽  
Vol 3 (3) ◽  
pp. 13-17
Author(s):  
Rusliansyah Rusliansyah ◽  
Rusdiansyah Rusdiansyah ◽  
Muhammad Afief Ma’ruf ◽  
Meilinda Ayunita Santoso
Keyword(s):  
Physical Properties ◽  
Water Level ◽  
Ecosystem Restoration ◽  
High Water ◽  
Land Conservation ◽  
Land Area ◽  
Fire Point ◽  
Main Factor ◽  
Properties Of Soil

Peatland fires in 2015 that hit 23 of 33 provinces in Indonesia is one of the worst fires in history. South Kalimantan is one of the 23 provinces with the burned land area of 19.179,9 hectares. Peatland burning in Banjarbaru and of Banjar Regency which totaled 1.536 fire point burning with a land area of approximately 1.500 hectares. The main factor of this land fires is of decreased water level in the peat land. Therefore, to overcome that fires will not happen again by creating a conservation pond to hold water, especially during the rainy season in order to keep moist peat.   The planning an peat land conservation in this area of 900 hectares. Peat ecosystem restoration can be done through the realignment of hydrological function where peat dome as a long-term water storage. The purpose of the research is to knowing the state of the physical properties soil for conservation pond made and knowing the condition of the ground water level in the field.  From the results of an investigation soil physical properties obtained peat has not undergone recast and the number of pores in the soil are very large so that the soil becomes porous with a high water level conditions.

scholarly journals Correction: Impact of Amendments on the Physical Properties of Soil under Tropical Long-Term No Till Conditions

PLoS ONE ◽  
2017 ◽  
Vol 12 (2) ◽  
pp. e0173011 ◽  
Author(s):  
Antonio C. A. Carmeis Filho ◽  
Carlos A. C. Crusciol ◽  
Tiara M. Guimarães ◽  
Juliano C. Calonego ◽  
Sacha J. Mooney
Keyword(s):  
Physical Properties ◽  
No Till ◽  
Properties Of Soil

scholarly journals Long-Term Productivity of Canvasbacks (Aythya Valisineria) in a Snowpack-Driven Desert Marsh

The Auk ◽  
2003 ◽  
Vol 120 (1) ◽  
pp. 107-119
Author(s):  
Kammie L. Kruse ◽  
James R. Lovvorn ◽  
John Y. Takekawa ◽  
Jeffrey Mackay
Keyword(s):  
Water Level ◽  
Nest Success ◽  
High Water ◽  
Breeding Population ◽  
Breeding Performance ◽  
Wetland Birds ◽  
Factors Affecting ◽  
Mammalian Predators ◽  
Aythya Valisineria

Abstract Ruby Lake, Nevada, is a large palustrine wetland that hosts the southern-most major breeding population of Canvasbacks (Aythya valisineria). That arid marsh, fed by springs derived from mountain snowpack, differs in climate and hydrology from glaciated potholes of the northern prairies where most Canvasbacks breed. Fourteen years of nesting data on Canvasbacks over a 31 year period (1970–2000) were analyzed to determine factors affecting breeding performance at Ruby Lake and whether they differed from those in the prairies. Long-term Mayfield nest success at Ruby Lake (50% of all nests) was in the range of that in the northern prairies (21–65%). Of all Canvasback nests, 73% were parasitized (mostly by Redheads [Aythya americana]) as compared to 83–97% in a large Manitoba marsh and 57–65% in Manitoba potholes. However, as in the northern prairies, nest parasitism generally had little or no effect on either nest success or percentage of host eggs that hatched. In Manitoba potholes, nest success was unrelated to habitat variables measured; but successful nests at Ruby Lake were over shallower water, farther from shore, in wider bands of emergent vegetation, and surrounded by lower stem densities than unsuccessful nests. Water level is the key factor in breeding performance of Canvasbacks at both Ruby Lake and the northern prairies; however, the source of water differs (mountain snowpack at Ruby Lake, direct precipitation in the prairies) and effects of water-level variations are reversed. In small prairie potholes (mostly <0.4 ha) with many mammalian predators, productivity of Canvasbacks (which build floating nests) is increased by high water that floods the emergent fringe. At Ruby Lake, a very large marsh (2,830 ha) with mostly avian predators, Canvasback productivity is decreased by high water that floods interior emergent stands too deeply. Water level at Ruby Lake was highly correlated (multiple R2 = 0.91) with mountain snowpack up to three years earlier, emphasizing the strong effect of climatic variations on wetland birds in that arid region.

scholarly journals Impact of Amendments on the Physical Properties of Soil under Tropical Long-Term No Till Conditions

PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0167564 ◽  
Author(s):  
Antonio C. A. Carmeis Filho ◽  
Carlos A. C. Crusciol ◽  
Tiara M. Guimarães ◽  
Juliano C. Calonego ◽  
Sacha J. Mooney
Keyword(s):  
Physical Properties ◽  
No Till ◽  
Properties Of Soil

scholarly journals Physical properties of soil after 54 years of long-term fertilization and crop rotation  

2016 ◽  
Vol 62 (No. 9) ◽  
pp. 389-394 ◽  
Author(s):  
I. Suwara ◽  
K. Pawlak-Zaręba ◽  
D. Gozdowski ◽  
A. Perzanowska
Keyword(s):  
Physical Properties ◽  
Crop Rotation ◽  
Properties Of Soil

Experimental Study on Zhenshui Sand Bar and its Treatment in Xiaolangdi Reservoir

2012 ◽  
Vol 204-208 ◽  
pp. 2318-2323
Author(s):  
Ting Wang ◽  
Jun Hua Zhang ◽  
Shu Kui Chen ◽  
Huai Bao Ma ◽  
Kun Peng Li
Keyword(s):  
Water Level ◽  
Storage Capacity ◽  
High Water ◽  
Experimental Result ◽  
Operational Mode ◽  
Small Reservoirs ◽  
Flood Season ◽  
Sand Bar ◽  
Xiaolangdi Reservoir

Zhenshui is the biggest tributary of Xiaolangdi Reservoir and its original storage capacity is 1.767 billion m3. By October 2010, the amount of sediment in Zhenshui reached 0.1691 billion m3, and the sand bar at Zhenshui estuary was 7m in height. Influenced by operational mode of reservoir and terrain, the formation of sand bar has certain inevitabilities. The sand bar can prevent water and sediment exchange between mainstream and tributary, and the internal storage capacity of tributary is not effectively used. The experimental result shows that during the later sediment retaining period, some small reservoirs can be built at the end of Zhenshui. By restoring water during the high water level in non-flood season in these small reservoirs and discharging flow during the low water level in flood season to scour sand bar, the tributary and main channel in Xiaolangdi Reservoir can be linked up in long term, service efficiency and life of tributary storage can be increased.

scholarly journals Macrophytes in the littoral of Lake Arakhley in different states of water regime

2019 ◽  
Vol 38 (3) ◽  
pp. 225-239
Author(s):  
Alexey P. Kuklin ◽  
Balzhit B. Bazarova
Keyword(s):  
Water Content ◽  
Water Level ◽  
Mixed Type ◽  
Water Regime ◽  
Aquatic Vegetation ◽  
High Water ◽  
Sand Beach ◽  
Climate Fluctuations ◽  
High Water Period

AbstractThe study of aquatic vegetation in the littoral of the dimictic water bodies of taiga is of particular interest in case of long-term observations carried out under conditions of climate fluctuations. During the low-water period, drying of the littoral with a decrease in the water level leads to the changes in phytomass of macrophytes, as well as in the composition of species and their distribution by depth. The area of littoral covered with ice in winter is also large in the low-water period; it affects the growth of perennial plants. When the water level decreases, the sand beach replaces the sand and pebble beach; it leads to the disappearance of epilithon and the predominance of rooting plants. The features of vegetation were determined for each period of water content. The low-water period is characterised mostly by grass-type vegetation; the high-water period is characterised by vegetation of mixed type.

Isolation and water-level fluctuations of Lake Kachishayoot, Northern Québec, Canada

2003 ◽  
Vol 60 (2) ◽  
pp. 149-161 ◽  
Author(s):  
Luc Miousse ◽  
Najat Bhiry ◽  
Martin Lavoie
Keyword(s):  
Water Level ◽  
High Water ◽  
Water Level Fluctuations ◽  
Laurentide Ice Sheet ◽  
Northeastern United States ◽  
Lacustrine Environment ◽  
East Central ◽  
Central Canada ◽  
Pollen Analyses

AbstractThis study combines different methods, including grain size, macrofossil, and pollen analyses, to reconstruct paleogeographical and paleoclimatological conditions for periods before, during, and after the isolation of a small lake (Lake Kachishayoot) in northern Québec. After the retreat of the Laurentide Ice Sheet around 800014C yr B.P., the area was submerged by the Tyrrell Sea. The transition from marine to lacustrine environment occurred about 5400 yr B.P. Two major periods of water-level fluctuations were inferred from organic and mineral sediments: a high water level that occurred after 3200 yr B.P. and a low water level that started before 2200 yr B.P. Our chronological data for the first period are consistent with those from nearby Lac des Pluviers and from other lakes in east central Canada and in the northeastern United States. During the low-water-level period, however, there is no evidence for minor fluctuations, whereas other lakes in northern Québec and east-central Canada underwent several brief lowerings. Long-term changes in atmospheric circulation caused by changing global boundary conditions likely explained long-term water-level fluctuations of Lake Kachishayoot.

scholarly journals Dynamics of plankton biocenoses under water level fluctuations in steppe lakes

2022 ◽  
Vol 962 (1) ◽  
pp. 012002
Author(s):  
E Yu Afonina ◽  
N A Tashlykova
Keyword(s):  
Water Level ◽  
Green Algae ◽  
Hydrological Regime ◽  
Steppe Zone ◽  
High Water ◽  
Water Level Fluctuations ◽  
Water Level Variation ◽  
Arid Steppe ◽  
Filling Phase

Abstract Barun-Torey and Zun-Torey lakes are located in the arid steppe zone of the Central (Inner) Asia, Eastern Siberia, Russia. The Torey lakes are characterizes unstable hydrological regime. The water level variation is explained by the periodic filling and drying of the lakes due to cyclical climatic changes in humidity and temperature. We conducted our studies various water level phases of the climatic cycle: from high water level (1999, 2003) to drying out and the initial filling phase (2007, 2011, 2014, 2016, 2018, and 2020). The aim of this paper is to present long-term research results on changes in the plankton biocenoses of the Torey lakes during a climate cycle, the drying and initial filling of basins. Succession of plankton dominant species is in the direction of: diatoms+green algae and rotifers+crustaceans → green algae and crustaceans → green algae+cyanobacteria and crustaceans → no planktonic algae and invertebrates → cyanobacteria+diatoms+green algae and rotifers+cladocerans+copepods.

KUBOTA KNC-03

Alloy Digest ◽  
2010 ◽  
Vol 59 (1) ◽  
Keyword(s):  
Compressive Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Temperature Performance ◽  
Resistance To Oxidation

Abstract Kubota KNC-03 is a grade with a combination of high strength and excellent resistance to oxidation. These properties make this alloy suitable for long-term service at temperature up to 1250 deg C (2282 deg F). This datasheet provides information on physical properties, hardness, elasticity, tensile properties, and compressive strength as well as creep. It also includes information on high temperature performance as well as casting and joining. Filing Code: Ni-676. Producer or source: Kubota Metal Corporation, Fahramet Division. See also Alloy Digest Ni-662, April 2008.

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