Small Bodies of Water Which Have Disappeared from the Czech Landscape and the Possibility of Restoring Them

2019 ◽  
pp. 127-143
Author(s):  
B. Šarapatka ◽  
R. Pavelková
Keyword(s):  
Small Bodies ◽  
Bodies Of Water

scholarly journals Phytoplankton of small bodies of water

1966 ◽  
Vol 3 (1) ◽  
pp. 75-79 ◽  
Author(s):  
E.G. Williams
Keyword(s):  
Small Bodies ◽  
Bodies Of Water

scholarly journals Analysis of the In Situ Steering Motion Characteristics and Sensitivity of Disc-Type Underwater Gliders

2020 ◽  
Vol 8 (9) ◽  
pp. 663
Author(s):  
Han Zhou ◽  
Pengyao Yu ◽  
Xiang Jin ◽  
Tianlin Wang
Keyword(s):  
Sensitivity Analysis ◽  
Stability Analysis ◽  
Structural Characteristics ◽  
Small Bodies ◽  
Underwater Gliders ◽  
Motion Characteristics ◽  
The Stability ◽  
Bodies Of Water ◽  
Yaw Angle

A disc-type underwater glider (DTUG) has a highly symmetrical shape and is characterized by omnidirectional characteristics and high maneuverability in small bodies of water. To further explore the disc shape’s advantages and characteristics in steering motion, DTUG motion was simulated by Matlab/Simulink. Based on the structural characteristics of DTUG, the motion control equations were established. The simulation of DTUG’s steering motion is carried out and compared with a previous DTUG (LUNA). The sensitivity analysis and Lyapunov stability analysis were also conducted. The results showed that the in situ steering motion can be realized by controlling the position of the center of gravity (CG) of DTUG without moving vertically, which facilitates rapid adjustment of the yaw angle and flexible movement in small bodies of water. The in situ steering motion was significantly affected by the control parameters. The parameter that had the greatest effect on it can be obtained through sensitivity analysis, which can guide DTUG to better adjust the yaw angle under different conditions. The stability analysis showed that the DTUG can remain stable within the range of the control parameter.

scholarly journals Migrant Common Eider, Somateria mollissima, Collisions with Power Transmission Lines and Shortwave Communication Towers on the Tantramar Marsh in Southeastern New Brunswick

2011 ◽  
Vol 125 (1) ◽  
pp. 41 ◽  
Author(s):  
Colin M. MacKinnon ◽  
Andrew C. Kennedy
Keyword(s):  
New Brunswick ◽  
Transmission Lines ◽  
Power Transmission ◽  
Somateria Mollissima ◽  
Power Transmission Lines ◽  
Small Bodies ◽  
Common Eiders ◽  
Bodies Of Water ◽  
Shortwave Communication ◽  
Communication Towers

Between 1971 and 2009, 85 dead, injured, or grounded Common Eiders, Somateria mollissima, were recorded on the Tantramar Marsh in southeastern New Brunswick, apparently the result of collisions with power transmission lines and shortwave communication towers. Of 82 location observations, 53 (65%) were near a series of power transmission lines and 21 (26%) were in the vicinity of shortwave communication towers. Of the 85 birds observed, 43 (51%) were found dead, 18 (21%) were found alive on the ground with undetermined injuries, 5 (6%) were found alive with broken wings, and 9 birds (11%) were found alive with no obvious external injuries and were released in water. A further 10 live birds (12%) were observed on small bodies of water and appeared unable to fly. Occurrences appear to be predominantly during fall migration, with most sightings recorded between 9 October and 21 December (99%, n = 73). The effects of cumulative mortality on Common Eiders should be considered if further infrastructure within the Tantramar Marsh or infrastructure involving other known overland routes used by Common Eiders during migration is proposed.

scholarly journals Conservation of Iberian Black Storks Ciconia nigra outside breeding areas: distribution, movements and mortality

2013 ◽  
Vol 23 (4) ◽  
pp. 463-468 ◽  
Author(s):  
LUIS SANTIAGO CANO ◽  
CLÁUDIA FRANCO ◽  
GUILLERMO DOVAL ◽  
ALEJANDRO TORÉS ◽  
ISIDORO CARBONELL ◽  
...  
Keyword(s):  
Water Resources ◽  
Summer Monsoon ◽  
Strategic Plan ◽  
Action Plans ◽  
Small Bodies ◽  
Future Action ◽  
Ciconia Nigra ◽  
Black Stork ◽  
Sub Saharan ◽  
Bodies Of Water

SummarySeven out of ten Black Stork chicks fitted with satellite tags successfully made the journey from Iberia to the Sahel. Four died there during their first winter and one additional bird in the second winter. Our results show that 30% of the tagged fledglings died in Iberia and 50% (5/10) in the Sahel. In the Sahel, Black Storks occupy areas of seasonal rivers and small bodies of water in these sub-Saharan savannas, where they track suitable sites according to the progressive drying of the Sahel after the summer monsoon. This behaviour may make them more susceptible to coming into contact with humans and, consequently, current and future action plans for conserving the Iberian Black Stork population should link efforts with AEWA's Strategic Plan and other international initiatives to promote the global use of water resources for humans and wildlife in the Sahel.

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