Spring social organisation, habitat use, diet, and body mass dynamics of hazel grouse Bonasa bonasia in northeastern Asia

1997 ◽  
Vol 3 (1) ◽  
pp. 251-259 ◽  
Author(s):  
Serguei V. Drovetski
Keyword(s):  
Habitat Use ◽  
Body Mass ◽  
Social Organisation ◽  
Northeastern Asia ◽  
Hazel Grouse ◽  
Bonasa Bonasia

scholarly journals Identifying habitat suitability for hazel grouse Bonasa bonasia at the landscape scale

2006 ◽  
Vol 12 (4) ◽  
pp. 357-366 ◽  
Author(s):  
Lukas Mathys ◽  
Niklaus E. Zimmermann ◽  
Niklaus Zbinden ◽  
Werner Suter
Keyword(s):  
Habitat Suitability ◽  
Landscape Scale ◽  
Hazel Grouse ◽  
Bonasa Bonasia

scholarly journals Intraspecific variation in wing loading affects habitat use by little brown bats (Myotis lucifugus)

1995 ◽  
Vol 73 (1) ◽  
pp. 89-95 ◽  
Author(s):  
Matina C. Kalcounis ◽  
R. Mark Brigham
Keyword(s):  
Habitat Use ◽  
Body Mass ◽  
Selective Advantage ◽  
Myotis Lucifugus ◽  
Wing Loading ◽  
Interspecific Differences ◽  
Insect Trap ◽  
Flying Insects ◽  
The Relationship ◽  
Little Brown Bats

Morphological constraints have been linked to habitat partitioning by different species of animals. Interspecific differences have been explored, but less is known about the relationship between individuals of the same species. The purpose of this study was to determine if habitat use by little brown bats (Myotis lucifugus) varies with body mass of individuals. From aerodynamic theory, we predicted that bats with higher body mass will have higher wing loadings, should be less manoeuvrable, and thus tend to forage in areas where there are fewer obstacles to detect and avoid (clutter). Habitat was ranked into four zones based on the degree of clutter, and habitat use was assessed by measuring the time that males and non-reproductive, pregnant, lactating, postlactating, and artificially loaded females spent in each habitat zone. To test the assumption that a selective advantage accrues to bats foraging in clutter, we measured the availability of flying insects in cluttered and open habitats. Insect trap samples revealed a higher density of insect prey in more cluttered habitats. Body mass was positively correlated with wing loading. Overall, males were smaller than females with respect to mass and wing loading; however, these differences did not translate into differential habitat use. As predicted, there was a significant relationship between individual wing loading and habitat use, with heavier bats (greater wing loading) foraging in less cluttered areas.

Modelling habitat selection of the cryptic Hazel Grouse Bonasa bonasia in a montane forest

2009 ◽  
Vol 150 (4) ◽  
pp. 717-732 ◽  
Author(s):  
Daniel Müller ◽  
Boris Schröder ◽  
Jörg Müller
Keyword(s):  
Habitat Selection ◽  
Montane Forest ◽  
Hazel Grouse ◽  
Bonasa Bonasia ◽  
Selection Of

The dynamics of hazel grouse (Bonasa bonasia L.) occurrence in habitat fragments

2000 ◽  
Vol 78 (3) ◽  
pp. 352-358 ◽  
Author(s):  
Johan Åberg ◽  
Jon E Swenson ◽  
Henrik Andrén
Keyword(s):  
Critical Level ◽  
Fragment Size ◽  
Coniferous Forest ◽  
Suitable Habitat ◽  
Hazel Grouse ◽  
Bonasa Bonasia ◽  
Intensively Managed

The aim of this study was to evaluate the effects of habitat fragment size and isolation on the dynamics of hazel grouse (Bonasa bonasia L.) occurrence. Habitat fragments surrounded by nonhabitat coniferous forest, in an intensively managed forested landscape, were censused during seven seasons. None of the 33 habitat fragments were occupied in all seven seasons and 7 were never occupied. Turnover occurred in 79% of the habitat fragments. The most common occupation of a habitat fragment was by only one hazel grouse male (84%). Thus, the dynamics of hazel grouse occurrence in the habitat fragments was basically monitored on the scale of individuals. Large and less isolated habitat fragments with a high amount of cover were occupied significantly more often than small, isolated fragments. The effect of size appeared most clearly when analyzing the total number of hazel grouse occupying a habitat fragment. The appearance of hazel grouse in the habitat fragments was best explained by the amount of cover, distance to the nearest suitable habitat, and size of the habitat fragment. The effects of interfragment distance on the occurrence and appearance of hazel grouse implies that the habitat has become functionally disconnected for hazel grouse and suggests that the amount of suitable hazel grouse habitat left in this landscape has fallen below a critical level.

scholarly journals Functional traits of the world’s late Quaternary large-bodied avian and mammalian herbivores

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Erick J. Lundgren ◽  
Simon D. Schowanek ◽  
John Rowan ◽  
Owen Middleton ◽  
Rasmus Ø. Pedersen ◽  
...  
Keyword(s):  
Habitat Use ◽  
Body Mass ◽  
Functional Diversity ◽  
Functional Traits ◽  
Late Quaternary ◽  
Functional Trait ◽  
Ecological Impacts ◽  
Large Herbivore ◽  
Mammalian Herbivores ◽  
Threatened Taxa

AbstractPrehistoric and recent extinctions of large-bodied terrestrial herbivores had significant and lasting impacts on Earth’s ecosystems due to the loss of their distinct trait combinations. The world’s surviving large-bodied avian and mammalian herbivores remain among the most threatened taxa. As such, a greater understanding of the ecological impacts of large herbivore losses is increasingly important. However, comprehensive and ecologically-relevant trait datasets for extinct and extant herbivores are lacking. Here, we present HerbiTraits, a comprehensive functional trait dataset for all late Quaternary terrestrial avian and mammalian herbivores ≥10 kg (545 species). HerbiTraits includes key traits that influence how herbivores interact with ecosystems, namely body mass, diet, fermentation type, habitat use, and limb morphology. Trait data were compiled from 557 sources and comprise the best available knowledge on late Quaternary large-bodied herbivores. HerbiTraits provides a tool for the analysis of herbivore functional diversity both past and present and its effects on Earth’s ecosystems.

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