scholarly journals Daytime roosting and habitat preference of capercaillie Tetrao urogallus males in spring - the importance of forest structure in relation to anti-predator behaviour

2000 ◽  
Vol 6 (1) ◽  
pp. 241-249 ◽  
Author(s):  
Mats Haneborg Finne ◽  
Per Wegge ◽  
Sigrunn Eliassen ◽  
Morten Odden
Keyword(s):  
Forest Structure ◽  
Habitat Preference ◽  
Tetrao Urogallus ◽  
Predator Behaviour

Aufzuchtshabitate für Auerhühner – ein Experiment mit Haushuhnküken | Capercaillie chick habitat – an experiment with barn fowl chicks

2010 ◽  
Vol 161 (7) ◽  
pp. 264-270
Author(s):  
Maria Stettler ◽  
Roland F. Graf ◽  
Niklaus Zbinden
Keyword(s):  
Forest Structure ◽  
Action Plan ◽  
Positive Influence ◽  
Tetrao Urogallus ◽  
Vegetation Types ◽  
The Past ◽  
Lower Quantity ◽  
Movement Ability ◽  
Microclimatic Conditions ◽  
Characteristic Field

Capercaillie (Tetrao urogallus) populations in Switzerland declined seriously in the past decades. The national capercaillie action plan defines actions to improve forest structure and composition in order to further the populations of the largest grouse species. These habitat measures should focus on improving summer habitat for hens with chicks, because winter habitats are available in good quality and quantity. However, our knowledge on reproduction habitats in alpine conditions is limited. In this study, we investigated microclimatic conditions, i.e. plant wetness, and movement ability of barn fowl chicks in seven characteristic field layer types in the northern Swiss Lower Alps. In the experiment on movement ability, we worked with barn fowl instead of capercaillie chicks for methodological reasons. In the bilberry-dominated vegetation, we measured a significantly lower quantity of water than in the vegetation types without bilberry. In the movement experiment, we found no significant differences between the vegetation types. As a qualitative result, we observed that the chicks moved easily even in high (> 30 cm) and close bilberry vegetation. Our results suggest that bilberry-dominated vegetation provides better conditions for grouse chicks than wet meadows and pastures, because less water adheres to the bilberry plants. Thus, the chicks get less wet in bilberry vegetation, which probably has a positive influence on the survival of the chicks. Even tall and dense vegetation seems not to impede the movement of the chicks. The results of our experiment may not be directly transferable to the demands of capercaillie chicks. Nevertheless, our study provides further evidence for the importance of bilberry as capercaillie chick habitat, especially in regions with high precipitations.

Influences of Forest Structure on the Density and Habitat Preference of Two Sympatric Gibbons (Symphalangus syndactylus and Hylobates lar)

2021 ◽  
Vol 42 (2) ◽  
pp. 237-261 ◽  
Author(s):  
Emma L. Hankinson ◽  
Ross A. Hill ◽  
Christopher D. Marsh ◽  
Matt G. Nowak ◽  
Abdullah Abdullah ◽  
...  
Keyword(s):  
Forest Structure ◽  
Habitat Preference ◽  
Hylobates Lar ◽  
Symphalangus Syndactylus

Evaluation of roe deer effects upon forest structure in Nogueira Mountain (NE of Portugal)

2007 ◽  
Vol 3 (2) ◽  
Author(s):  
Aurora Monzon ◽  
António L. Crespí ◽  
Sónia Pinto ◽  
Adriano Castro ◽  
Claúdia P. Fernandes ◽  
...  
Keyword(s):  
Forest Structure ◽  
Roe Deer

Forest structure and tree ring widths from the Fire and Fire Surrogate Study - Blodgett Forest Site

2014 ◽  
Author(s):  
Brandon M. Collins ◽  
Adrian J. Das ◽  
John J. Battles ◽  
Danny L. Fry ◽  
Kevin D. Krasnow ◽  
...  
Keyword(s):  
Tree Ring ◽  
Forest Structure ◽  
Forest Site

Differentiation and Interrelations of Two Representatives of Laudakia stellio Complex (Reptilia: Agamidae) in Israel

2011 ◽  
Vol 4 (2) ◽  
pp. 102-114 ◽  
Author(s):  
Evgenyi N. Panov ◽  
Larissa Yu. Zykova
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
Habitat Preference ◽  
Additional Data ◽  
Near East ◽  
Field Studies ◽  
Subspecies Level ◽  
Limited Gene Flow ◽  
Study Sites ◽  
And Behavior

Field studies were conducted in Central Negev within the breeding range of Laudakia stellio brachydactyla and in NE Israel (Qyriat Shemona) in the range of an unnamed form (tentatively “Near-East Rock Agama”), during March – May 1996. Additional data have been collected in Jerusalem at a distance of ca. 110 km from the first and about 170 km from the second study sites. A total of 63 individuals were caught and examined. The animals were marked and their subsequent movements were followed. Social and signal behavior of both forms were described and compared. Lizards from Negev and Qyriat Shemona differ from each other sharply in external morphology, habitat preference, population structure, and behavior. The differences obviously exceed the subspecies level. At the same time, the lizards from Jerusalem tend to be intermediate morphologically between those from both above-named localities, which permits admitting the existence of a limited gene flow between lizard populations of Negev and northern Israel. The lizards from NE Israel apparently do not belong to the nominate subspecies of L. stellio and should be regarded as one more subspecies within the species.

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