Nesting Habitats and Nest Predation in Sympatric Populations of Capercaillie and Black Grouse

Storaas, Torstein; Wegge, Per

doi:10.2307/3801649

Cited by 69 publications

(71 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Records from Russia also show that capercaillie prefer to nest in edge habitats (Semenov-Tjan-Sanskij, 1960, cited in Klaus et al, 1986. Scandinavian results are ambiguous: although capercaillie were found to nest mostly in clearcuts or old forests, no preference was reported for edge habitats, nor was a significant relationship found between nest cover and survival Storaas & Wegge, 1987). Variation in habitat structure and/or predator species may explain the differences observed.…”

Section: Nesting Habitatmentioning

confidence: 39%

Habitat and survival of capercaillie Tetrao urogallus nests and broods in the Bavarian alps

Storch

1994

Biological Conservation

View full text Add to dashboard Cite

show abstract

Section: Nesting Habitatmentioning

confidence: 39%

Habitat and survival of capercaillie Tetrao urogallus nests and broods in the Bavarian alps

Storch

1994

Biological Conservation

View full text Add to dashboard Cite

show abstract

“…This was explained as a strategy to avoid predation by choosing unpredictable nest sites (Storaas and Wegge 1987). Which strategy a Capercaillie hen should apply in nest site selection may depend on the species composition, habitat preferences, and density of the predators present, and will also be affected by the density and distribution of nests and of alternative prey.…”

Section: Discussionmentioning

confidence: 99%

“…Habitat fragmentation creates spatial variations in predation risk, with a tendency for higher losses near edges than inside homogeneous areas of habitat (Wilcove et al 1986, Andra and Angelstam 1988), and for increasing predation with decreasing patch size (Gates andGysel 1978, Wilcove 1985, Andra and Angelstam 1988, Moller 1988. The overall decline in Capercaillie numbers points to poor reproduction, and the question was raised whether nesting habitats might have become a limiting factor due to modern foresty practices (Klaus 1985, Storaas andWegge 1987). From Central Europe, there is hardly any C) ORNIS SCANDINAVICA information available about nesting habitat preferences of Capercaillie.…”

Section: Introductionmentioning

confidence: 99%

Habitat Fragmentation, Nest Site Selection, and Nest Predation Risk in Capercaillie

Storch¹

1991

Ornis Scandinavica

View full text Add to dashboard Cite

Storch, I. 1990. Habitat fragmentation, nest site selection, and nest predation risk in Capercaillie. -Ornis Scand. 22: 213-217.Nest site preferences of Capercaillie Tetra° urogallus and nest predation risk in relation to habitat fragmentation patterns were studied in an area of the Bavarian Alps, West Germany. Nest sites were located through radio-equipped females. Hens strongly preferred to nest in edge habitats, namely between mature forests and clearcuts. Nest predation risk was assessed by an experiment with artificial nests, considering effects of successional stage, patch size, and distance of nests from an edge. About two thirds of the nests were destroyed, mostly by mammal predators. Losses were lowest in stands of the youngest and the oldest successional stages. Predation was lower in edge habitats than inside forest stands. No difference in predation risk or in nest site preferences was found in relation to stand size. The results suggest that Capercaillie hens selected nest sites in order to minimize predation risk.

show abstract

“…for hunting dogs the detection distance of black grouse nests has been shown to be less than 2 m (Storaas et al 1999). Second, grouse nests are commonly distributed quasi randomly in many different habitat types (Storaas & Wegge 1987). High visibility of the nest and low tree density possibly increase the detection radius, and/or increase the screening efficiency of the predator, and hence the probability of finding and depredating the nest.…”

Section: Discussionmentioning

confidence: 99%

Individual and Environmental Determinants of Daily Black Grouse Nest Survival Rates at Variable Predator Densities

Ludwig

Alatalo

Helle³

et al. 2010

Annales Zoologici Fennici

View full text Add to dashboard Cite

Ludwig, G. X., Alatalo, R. V., Helle, P. & Siitari, H. 2010: Individual and environmental determinants of daily black grouse nest survival rates at variable predator densities. -Ann. Nest predation in ground nesting black grouse (Tetrao tetrix) inhabiting managed boreal forests is arguably the single most important cause of nesting failure. Little is known, however, about indirect effects of other factors, such as maternal or environmental properties, and to what extent maternal and habitat qualities interact with varying levels of predator densities. Using an information-theoretical approach, we studied maternal and environmental determinants of daily nest survival rates under variable predator densities of 210 individual black grouse hens in central Finland. Environmental determinants were far more important than maternal ones, and the effects were more apparent at higher predator densities. Keeping predator densities constant, daily nest survival rates increased with nest conspicuousness and increasing tree density, and were higher in undrained areas. While there was no difference between adults and juveniles, hens that invested more in egg size were more successful. Therefore, environmental factors and, to a lesser extent, maternal properties, indirectly affect nesting success especially when predator density is high. Modern forestry practices such as clear cutting and drainage are commonly linked to increased densities of predators such as foxes. Our results suggest that the nesting success of black grouse may further be indirectly affected by the same practices, the overall impact being a balance between the negative (e.g. drainage, clear-cutting) and the positive (reforestation, producing dense young forest stands) effects.

show abstract

Nesting Habitats and Nest Predation in Sympatric Populations of Capercaillie and Black Grouse

Cited by 69 publications

References 0 publications

Habitat and survival of capercaillie Tetrao urogallus nests and broods in the Bavarian alps

Habitat and survival of capercaillie Tetrao urogallus nests and broods in the Bavarian alps

Habitat Fragmentation, Nest Site Selection, and Nest Predation Risk in Capercaillie

Individual and Environmental Determinants of Daily Black Grouse Nest Survival Rates at Variable Predator Densities

Contact Info

Product

Resources

About