Vegetation Structure and Environmental Conditions of Forest Edges in Panama

1990 ◽  
Vol 78 (2) ◽  
pp. 356 ◽  
Author(s):  
Guadalupe Williams-Linera
Keyword(s):  
Environmental Conditions ◽  
Vegetation Structure ◽  
Forest Edges

scholarly journals Microclimatic conditions at forest edges have significant impacts on vegetation structure in large Atlantic forest fragments

2015 ◽  
Vol 24 (9) ◽  
pp. 2305-2318 ◽  
Author(s):  
Luiz Fernando Silva Magnago ◽  
Mariana Ferreira Rocha ◽  
Leila Meyer ◽  
Sebastião Venâncio Martins ◽  
João Augusto Alves Meira-Neto
Keyword(s):  
Atlantic Forest ◽  
Vegetation Structure ◽  
Forest Fragments ◽  
Forest Edges ◽  
Microclimatic Conditions

scholarly journals Emilia coccinea (scarlet tasselflower).

2020 ◽  
Author(s):  
Julissa Rojas-Sandoval
Keyword(s):  
Dominican Republic ◽  
Environmental Conditions ◽  
New Caledonia ◽  
Forest Edges ◽  
Fast Growing ◽  
Disturbed Areas ◽  
Wide Range ◽  
Agricultural Weed ◽  
New Habitats

Abstract As many other species within the genus Emilia, E. coccinea is herb that behaves as an environmental and agricultural weed. This fast-growing herb has the potential to rapidly colonize disturbed areas, waste grounds, gardens, forest edges, pastures, active and abandoned cultivated lands, roadsides, dry thickets and riverbanks. This species is adapted to grow in a wide range of environmental conditions and has wind-dispersed seeds, which are features that may facilitate its spread into new habitats. It is listed as invasive in Hawaii, Dominican Republic and New Caledonia.

scholarly journals Springbok behaviour as affected by environmental conditions in the Kalahari

Koedoe ◽  
2008 ◽  
Vol 50 (1) ◽  
Author(s):  
Hein Stapelberg ◽  
Margaretha W. Van Rooyen ◽  
Jacobus Du P. Bothma ◽  
Michael J. Van der Linde ◽  
Hendrik T. Groeneveld
Keyword(s):  
Environmental Conditions ◽  
Vegetation Structure ◽  
Time Of Day ◽  
Climatic Conditions ◽  
Niche Separation ◽  
Behavioural Ecology ◽  
Wet Season ◽  
Direct Sunlight ◽  
Common Activity ◽  
Northeasterly Wind

Springbok behavioural ecology in the Kalahari was examined with the use of public questionnaires and field forms. Springbok favoured grass and forbs overall more than shrubs and trees, but diet selection was influenced by time of day and season. Feeding was the most common activity and the frequency of occurrence varied during the day and between seasons. Weather and microhabitat conditions were found to have a significant effect on the feeding behaviour. Springbok fed in direct sunlight in the mornings and moved into the shade during the afternoon. More time was spent feeding in the shade during the warmer months than during the colder months, especially under northerly to northeasterly wind directions. Natural licks were commonly utilised. Herd sizes were found to increase during the cold-dry season and decrease during the hot-wet season. Springbok and blue wildebeest appeared to avoid competition by niche separation. The study showed that springbok behaviour was significantly affected by environmental conditions. These results imply that changes in climatic conditions, such as those predicted by climate change, or changes in vegetation structure due to degradation, can negatively affect springbok behaviour.

Vibration Isolator System for Electron Microscope

1990 ◽  
Vol 48 (1) ◽  
pp. 182-183
Author(s):  
K. Ohi ◽  
M. Mizuno ◽  
T. Kasai ◽  
Y. Ohkura ◽  
K. Mizuno ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Magnetic Fields ◽  
Environmental Conditions ◽  
Vibration Isolator ◽  
Air Conditioners ◽  
Vibration Isolators ◽  
Large Size ◽  
Electron Microscopes

In recent years, with electron microscopes coming into wider use, their installation environments do not necessarily give their performance full play. Their environmental conditions include air-conditioners, magnetic fields, and vibrations. We report a jointly developed entirely new vibration isolator which is effective against the vibrations transmitted from the floor.Conventionally, large-sized vibration isolators which need the digging of a pit have been used. These vibration isolators, however, are large present problems of installation and maintenance because of their large-size.Thus, we intended to make a vibration isolator which1) eliminates the need for changing the installation room2) eliminates the need of maintenance and3) are compact in size and easily installable.

The influence of external conditions on sound pressure in the pistonphone at the infrasound frequency range

2020 ◽  
pp. 67-72
Author(s):  
A. V. Konkov ◽  
D. V. Golovin
Keyword(s):  
Environmental Conditions ◽  
Sound Pressure ◽  
Primary Method ◽  
Frequency Range ◽  
External Conditions ◽  
Numerical Estimations

The influence of environmental conditions on a sound pressure reproduced by the primary method in the measuring chambers of the Pistonphone in the frequency range from 1 mHz to 250 Hz is estimated. Numerical estimations of influence of environmental conditions on sound pressure in pistonphone measuring chambers are given and special requirements to system of maintenance of required external conditions are specified.

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