PHYTOLITHS IN PALEOECOLOGY: A TOOL FOR RECONSTRUCTING HABITAT STRUCTURE, AND HETEROGENEITY

2016 ◽  
Author(s):  
Camilla Crifò ◽  
◽  
Caroline A.E. Strömberg
Keyword(s):  
Habitat Structure

scholarly journals Simulations with Australian dragon lizards suggest movement-based signal effectiveness is dependent on display structure and environmental conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xue Bian ◽  
Angela Pinilla ◽  
Tom Chandler ◽  
Richard Peters
Keyword(s):  
Research Methods ◽  
Environmental Conditions ◽  
Comparative Studies ◽  
Habitat Structure ◽  
Signal Transmission ◽  
Lizard Species ◽  
Local Adaptations ◽  
Signal Divergence ◽  
Colour Signals ◽  
Optimal Signal

AbstractHabitat-specific characteristics can affect signal transmission such that different habitats dictate the optimal signal. One way to examine how the environment influences signals is by comparing changes in signal effectiveness in different habitats. Examinations of signal effectiveness between different habitats has helped to explain signal divergence/convergence between populations and species using acoustic and colour signals. Although previous research has provided evidence for local adaptations and signal divergence in many species of lizards, comparative studies in movement-based signals are rare due to technical difficulties in quantifying movements in nature and ethical restrictions in translocating animals between habitats. We demonstrate herein that these issues can be addressed using 3D animations, and compared the relative performance of the displays of four Australian lizard species in the habitats of each species under varying environmental conditions. Our simulations show that habitats differentially affect signal performance, and an interaction between display and habitat structure. Interestingly, our results are consistent with the hypothesis that the signal adapted to the noisier environment does not show an advantage in signal effectiveness, but the noisy habitat was detrimental to the performance of all displays. Our study is one of the first studies for movement-based signals that directly compares signal performance in multiple habitats, and our approach has laid the foundation for future investigations in motion ecology that have been intractable to conventional research methods.

Habitat structure and association with ungulates drive habitat selection and grouping behaviour of lesser rhea ( Rhea pennata subsp. pennata )

2020 ◽  
Vol 46 (1) ◽  
pp. 86-97
Author(s):  
Esperanza C. Iranzo ◽  
Juan Traba ◽  
Cristina Mata ◽  
Pablo Acebes ◽  
Juan E. Malo
Keyword(s):  
Habitat Selection ◽  
Habitat Structure ◽  
Lesser Rhea

Temporal variation in habitat structure and shrubsteppe bird dynamics

Oecologia ◽  
1980 ◽  
Vol 47 (1) ◽  
pp. 1-9 ◽  
Author(s):  
John T. Rotenberry ◽  
John A. Wiens
Keyword(s):  
Temporal Variation ◽  
Habitat Structure

scholarly journals European birds adjust their flight initiation distance to road speed limits

2013 ◽  
Vol 9 (5) ◽  
pp. 20130417 ◽  
Author(s):  
Pierre Legagneux ◽  
Simon Ducatez
Keyword(s):  
Habitat Structure ◽  
Territory Size ◽  
Speed Limit ◽  
Vehicle Speed ◽  
Flight Initiation Distance ◽  
Speed Limits ◽  
Behavioural Responses ◽  
Road Speed ◽  
Flight Initiation ◽  
Local Speed

Behavioural responses can help species persist in habitats modified by humans. Roads and traffic greatly affect animals' mortality not only through habitat structure modifications but also through direct mortality owing to collisions. Although species are known to differ in their sensitivity to the risk of collision, whether individuals can change their behaviour in response to this is still unknown. Here, we tested whether common European birds changed their flight initiation distances (FIDs) in response to vehicles according to road speed limit (a known factor affecting killing rates on roads) and vehicle speed. We found that FID increased with speed limit, although vehicle speed had no effect. This suggests that birds adjust their flight distance to speed limit, which may reduce collision risks and decrease mortality maximizing the time allocated to foraging behaviours. Mobility and territory size are likely to affect an individuals' ability to respond adaptively to local speed limits.

Homogenization and miniaturization of habitat structure in temperate marine forests

2021 ◽  
Author(s):  
Albert Pessarrodona ◽  
Karen Filbee‐Dexter ◽  
Teresa Alcoverro ◽  
Jordi Boada ◽  
Colette J. Feehan ◽  
...  
Keyword(s):  
Habitat Structure
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