Vagility of Aquatic Salamanders: Implications for Wetland Connectivity

2010 ◽  
Vol 44 (1) ◽  
pp. 104-109 ◽  
Author(s):  
Christopher M. Schalk ◽  
Thomas M. Luhring
Keyword(s):  
Wetland Connectivity ◽  
Aquatic Salamanders

Avian Movements and Wetland Connectivity in Landscape Conservation

1998 ◽  
Vol 12 (4) ◽  
pp. 749-758 ◽  
Author(s):  
Susan M. Haig ◽  
David W. Mehlman ◽  
Lewis W. Oring
Keyword(s):  
Landscape Conservation ◽  
Wetland Connectivity

scholarly journals Grading Evaluation of the Structural Connectivity of River System Networks Based on Ecological Functions, and a Case Study of the Baiyangdian Wetland, China

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1775
Author(s):  
Kai Tian ◽  
Xin-an Yin ◽  
Jie Bai ◽  
Wei Yang ◽  
Yan-wei Zhao
Keyword(s):  
Structural Connectivity ◽  
River System ◽  
Indicator System ◽  
Evaluation Methods ◽  
Ecological Functions ◽  
Wetland Ecosystems ◽  
Evaluation Indicator ◽  
Wetland Connectivity ◽  
Evaluation Indicator System ◽  
Baiyangdian Wetland

River system network (RSN) connectivity is important to maintain the environmental and ecological functions of wetlands. Quantitative evaluation of connectivity can provide crucial support for efforts to improve wetland connectivity and to restore and protect wetland ecosystems. Most existing evaluation methods uniformly generalise RSN to form an undifferentiated RSN of edges and nodes that is taken as a whole to evaluate the connectivity. However, actual RSNs comprise rivers, canals, ditches, lakes, and ponds, which differ substantially in their structures, morphologies, and attributes. The mix of RSN elements therefore defines grades that give RSNs distinctive characteristics. Moreover, RSNs with different grades perform different ranges of environmental and ecological functions. The existing evaluation methods, which have some limitations, do not account for these characteristics. To account for these differences, we examined the grade characteristics and their impact on environmental and ecological functions. We established a grading system of RSN elements and a grading method of RSN, and constructed the structural connectivity evaluation indicator system for RSNs at different grades. On this basis, we propose a method for grading evaluation of RSN connectivity. We used China’s Baiyangdian Wetland to demonstrate the use of the system and validate the results. The proposed method provided an objective and accurate evaluation of RSN connectivity and clarified the differences in connectivity among RSNs with different grades, thereby providing improved guidance for the development and maintenance of the environmental and ecological functions of RSNs.

Assessing the impacts of climate change and dams on floodplain inundation and wetland connectivity in the wet–dry tropics of northern Australia

2015 ◽  
Vol 522 ◽  
pp. 80-94 ◽  
Author(s):  
Fazlul Karim ◽  
Dushmanta Dutta ◽  
Steve Marvanek ◽  
Cuan Petheram ◽  
Catherine Ticehurst ◽  
...  
Keyword(s):  
Climate Change ◽  
Northern Australia ◽  
Dry Tropics ◽  
Wetland Connectivity ◽  
Floodplain Inundation ◽  
Impacts Of Climate Change

A Non-Invasive Water-Borne Assay of Stress Hormones in Aquatic Salamanders

Copeia ◽  
2016 ◽  
Vol 104 (1) ◽  
pp. 172-181 ◽  
Author(s):  
Caitlin R. Gabor ◽  
Kristina C. Zabierek ◽  
Diana S. Kim ◽  
Laura Alberici da Barbiano ◽  
Megan J. Mondelli ◽  
...  
Keyword(s):  
Stress Hormones ◽  
Non Invasive ◽  
Aquatic Salamanders ◽  
Water Borne

Improving wetland connectivity through the promotion of wet arable land

2020 ◽  
Vol 28 (4) ◽  
pp. 667-680
Author(s):  
Greg Churko ◽  
Thomas Walter ◽  
Erich Szerencsits ◽  
Anja Gramlich
Keyword(s):  
Arable Land ◽  
Wetland Connectivity

Feeding patterns ofChelus fimbriatus(Pleurodira:Chelidae)

2002 ◽  
Vol 205 (10) ◽  
pp. 1495-1506 ◽  
Author(s):  
Patrick Lemell ◽  
Christoph Lemell ◽  
Peter Snelderwaard ◽  
Michaela Gumpenberger ◽  
Robert Wochesländer ◽  
...  
Keyword(s):  
High Speed ◽  
Mouth Opening ◽  
Feeding Patterns ◽  
X Ray ◽  
Feeding Performance ◽  
High Speed Video ◽  
Unidirectional Flow ◽  
Anterior Half ◽  
Feeding Cycle ◽  
Aquatic Salamanders

SUMMARYThe kinematics of feeding on fish have been studied in the aquatic feeding specialist Chelus fimbriatus, the fringed turtle, to provide a basic description of complete feeding cycles. Anatomical findings supplement the kinematic results. High-speed video (500 frames s-1) recordings and X-ray film (150 frames s-1) are used to analyse the kinematic variables characterizing head, hyoid, oesophageal and prey movements. The high velocities, especially of mouth opening, the forward thrust of the head and suction of the prey, are unique among turtles and comparable with those of aquatic salamanders and certain fishes (unidirectional feeders, in contrast to Chelus fimbriatus). The expandability of the pharynx and the anterior half of the oesophagus enables a specific type of unidirectional flow, at least during the early stages of the feeding cycle. This considerably improves the feeding performance compared with that of other aquatic turtles. The streamlined shape of the skull, the large hyoid apparatus, the highly reduced tongue and the extremely distensible oesophagus support the kinematics to a great extent, making C. fimbriatus a specialized suction feeder that can be regarded as one endpoint in the feeding evolution of aquatic reptiles.

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