A mist-net method for capturing harlequin ducks on rivers

2015 ◽  
Vol 39 (2) ◽  
pp. 373-377 ◽  
Author(s):  
Cyndi M. Smith ◽  
Perry G. Trimper ◽  
Lisa J. Bate ◽  
Serge Brodeur ◽  
Warren K. Hansen ◽  
...  
Keyword(s):  
Harlequin Ducks ◽  
Net Method ◽  
Mist Net

scholarly journals Capture efficiency of torrent ducks by the active mist-net method

2017 ◽  
Vol 41 (2) ◽  
pp. 370-375 ◽  
Author(s):  
Luis Alza ◽  
Emil Bautista ◽  
Matthew Smith ◽  
Natalia Gutierrez-Pinto ◽  
Andrea Astie ◽  
...  
Keyword(s):  
Capture Efficiency ◽  
Net Method ◽  
Mist Net

Sparse damage detection via the elastic net method using modal data

2021 ◽  
pp. 147592172110219
Author(s):  
Rongrong Hou ◽  
Xiaoyou Wang ◽  
Yong Xia
Keyword(s):  
Damage Detection ◽  
Structural Damage ◽  
Damage Identification ◽  
Measurement Data ◽  
Elastic Net ◽  
Sensitivity Matrix ◽  
Regularization Technique ◽  
Modal Data ◽  
Regularization Techniques ◽  
Net Method

The l1 regularization technique has been developed for damage detection by utilizing the sparsity feature of structural damage. However, the sensitivity matrix in the damage identification exhibits a strong correlation structure, which does not suffice the independency criteria of the l1 regularization technique. This study employs the elastic net method to solve the problem by combining the l1 and l2 regularization techniques. Moreover, the proposed method enables the grouped structural damage being identified simultaneously, whereas the l1 regularization cannot. A numerical cantilever beam and an experimental three-story frame are utilized to demonstrate the effectiveness of the proposed method. The results showed that the proposed method is able to accurately locate and quantify the single and multiple damages, even when the number of measurement data is much less than the number of elements. In particular, the present elastic net technique can detect the grouped damaged elements accurately, whilst the l1 regularization method cannot.

Winter Age Ratios and the Assessment of Recruitment of Harlequin Ducks

Waterbirds ◽  
2001 ◽  
Vol 24 (1) ◽  
pp. 39 ◽  
Author(s):  
Cyndi M. Smith ◽  
R. Ian Goudie ◽  
Fred Cooke
Keyword(s):  
Harlequin Ducks

scholarly journals A fixed net method to determine the vertical migration of plankton

1976 ◽  
Vol 21 (6) ◽  
pp. 920-922 ◽  
Author(s):  
Richard V. Bovbjerg ◽  
Judy Freitag ◽  
Dana McHaney
Keyword(s):  
Vertical Migration ◽  
Net Method

scholarly journals Structure of three subtropical bat assemblages (Chiroptera) in the Andean rainforests of Argentina

Mammalia ◽  
2016 ◽  
Vol 80 (1) ◽  
Author(s):  
Mariano S. Sánchez
Keyword(s):  
Species Richness ◽  
Relative Abundance ◽  
Seasonal Changes ◽  
Common Species ◽  
Guild Structure ◽  
Trophic Guild ◽  
Long Tail ◽  
Mist Net ◽  
Yungas Forests

AbstractI evaluated bat assemblages in terms of species richness, relative abundance, trophic guild structure, and seasonal changes at three sites along of the Southern Yungas forests. A total of 854 individuals were captured, representing 25 species of three families, with an effort of 27,138 m of mist net opened per hour. Subtropical assemblages showed a similar structure to those from tropical landmark, with a dominance of frugivorous Phyllostomid; in addition, a few species were abundant, followed by a long tail of less common species. However, subtropical sites differed due to the dominance of the genus

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