Climatic control and population dynamics of black grouse (<i>Tetrao tetrix</i>) in the Western Italian Alps

Viterbi, Ramona; Imperio, Simona; Alpe, Dante; Bosser‐peverelli, Vittorio; Provenzale, Antonello

doi:10.1002/jwmg.810

Cited by 15 publications

(14 citation statements)

References 50 publications

(63 reference statements)

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“…ORNP was expected to be the study area with the low density population. Recently Viterbi et al (2015) analysed the population dynamics of the same Black Grouse population, through the years 1991-2009. They reported average densities ranging from 2.49 to 4.83 males/km 2 , with no significant population changes over time.…”

Section: Study Areamentioning

confidence: 99%

Effects of density on lek-site selection by Black GrouseTetrao tetrixin the Alps

2016

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2Capsule The Black Grouse is a primarily lekking species, but low population density 16 and lack of suitable habitat can lead to establish non-lekking populations. 17Aims To understand if differences in density could be related to differences in the 18 lekking system, if there were differences in lek-site selection, and if there was a direct 19 effect of habitat on the lek size. 20Methods We compared two Black Grouse populations with different male density. We 21 carried out counts from randomly chosen sample points and estimated population 22 density by distance sampling. We compared the differences in the lek size distribution 23 between the two study areas by a permutation chi-square test. We considered land-cover ResultsWe couldn't demonstrate the direct effect of density on the displaying behavior

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Section: Study Areamentioning

confidence: 99%

Effects of density on lek-site selection by Black GrouseTetrao tetrixin the Alps

2016

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“…An exception was summer precipitation (Fig. 2b), for which a negative relationship with both nest success and brood survival has been proposed (Hannon & Martin, 2006;Viterbi et al, 2015). We expected that housing…”

Section: Vital Rate Modellingmentioning

confidence: 91%

“…We were particularly interested in how the winter precipitation-temperature interaction might influence non-breeding survival (Fig. 2b), for which a negative relationship with both nest success and brood survival has been proposed (Hannon & Martin, 2006;Viterbi et al, 2015). Winter temperature is expected to modulate the quality of snow cover for snow roosting, and likewise, snow cover should modulate the direct effects of temperature variability (Aars & Ims, 2002;Kausrud et al, 2008;Zimmerman et al, 2008).…”

Section: Vital Rate Modellingmentioning

confidence: 99%

“…Little is known about relationships between climate and fecundity in Ruffed Grouse, but there is evidence for a negative relationship between summer precipitation and both hatching success and brood survival in many high-latitude, cycling grouse species due to negative thermal effects on eggs and precocial chicks, depressed arthropod food abundance and higher predation rates, under inclement conditions (Hannon & Martin, 2006). Black Grouse (Tetrao tetrix) population growth rate in northern Italy correlated negatively with early summer precipitation (Viterbi et al, 2015). Black Grouse in Finland responded to earlier springs by advancing egg-laying and hatching, but because early summer conditions remained unchanged, young were exposed to a colder post-hatching environment and suffered high mortality (Ludwig et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Climate variability drives population cycling and synchrony

Pomara

Zuckerberg

2017

Diversity and Distributions

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Aim There is mounting concern that climate change will lead to the collapse of cyclic population dynamics, yet the influence of climate variability on population cycling remains poorly understood. We hypothesized that variability in survival and fecundity, driven by climate variability at different points in the life cycle, scales up from local populations to drive regional characteristics of population cycling and spatial synchronization.Location Forest in the US Upper Midwest and Great Lakes region.Methods We tested hypotheses linking variation in vital rates of Ruffed Grouse (Bonasa umbellus), a declining species that displays decadal population cycles, to temperature and precipitation anomalies and land use intensity, using rate estimates from multiple locations in eastern North America. We used climatedemographic linkages to simulate spatially explicit population dynamics from 1982 to 2069, evaluated predictions against monitoring data and assessed predicted population dynamics under future climate projections.Results Nest success and winter survival were linked to temperature and precipitation anomalies, and demographic models explained important spatiotemporal characteristics of cycling and synchrony in monitoring data. The climate-driven vital rates were necessary for cycling and synchrony in models, even though the four included climate variables were not individually periodic. Cycling and synchrony were stronger at more northerly latitudes, but this transition occurred abruptly, reflecting regional variation in winter conditions. Forecasts suggested climate-driven cycling through mid-century, followed by desynchronization and dampening.Main conclusions Climate variability can drive spatio-temporal variation in demographic rates, and population cycling can result from these relationships. Pathways linking climate to broad-scale population dynamics involve responses of vital rates to several climate variables at different times of year and may be more complex than direct responses to known modes of climate variability. The wide-ranging impact of climate change on the demographics of northerly adapted species has the potential to degrade patterns of population synchrony and cycling.

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“…Although it has received less attention than OAG, climatic variation has also been shown to influence sage-grouse lek counts, survival, clutch size and nesting success (Blomberg et al, 2012(Blomberg et al, , 2014Coates et al, 2016;Gibson et al, 2017). This is not surprising, as there is a long and ecologically important history of studies on the influence of climatic variation on the population dynamics of tetraonids (Moran, 1952(Moran, , 1954Ranta et al, 1995;Lindström et al, 1996;Cattadori et al, 2005;Ludwig et al, 2006;Kvasnes et al, 2010;Selås et al, 2011;Viterbi et al, 2015;Ross et al, 2016). Consequently, the current study also includes annual variation in regional climate as a potential predictor of sage-grouse population dynamics.…”

Section: Introductionmentioning

confidence: 99%

Local and population-level responses of Greater sage-grouse to oil and gas development and climatic variation in Wyoming

Ramey¹,

Thorley²,

Ivey

2015

Preprint

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Background Spatial scale is important when studying ecological processes. The Greater sage-grouse (Centrocercus urophasianus) is a large sexually dimorphic tetraonid that is endemic to the sagebrush biome of western North America. The impacts of oil and gas development at individual leks has been well-documented. However, no previous studies have quantified the population-level response. Methods Hierarchical models were used to estimate the effects of the areal disturbance due to well pads as well as climatic variation on individual lek counts and Greater sage-grouse populations (management units) over 32 years. The lek counts were analyzed using General Linear Mixed Models while the management units were analyzed using Gompertz Population Dynamic Models. The models were fitted using frequentist and Bayesian methods. An information-theoretic approach was used to identify the most important spatial scale and time lags. The relative importance of oil and gas and climate at the local and population-level scales was assessed using information-theoretic (Akaike's weights) and estimation (effect size) statistics. Results At the local scale, oil and gas was an important negative predictor of the lek count. At the population scale, there was only weak support for oil and gas as a predictor of density changes but the estimated impacts on the long-term carrying capacity were consistent with summation of the local impacts. Regional climatic variation, as indexed by the Pacific Decadal Oscillation, was an important positive predictor of density changes at both the local and population-level (particularly in the most recent part of the time series). Conclusions Additional studies to reduce the uncertainty in the range of possible effects of oil and gas at the population scale are required. Wildlife agencies need to account for the effects of regional climatic variation when managing sage-grouse populations.

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Climatic control and population dynamics of black grouse (Tetrao tetrix) in the Western Italian Alps

Cited by 15 publications

References 50 publications

Effects of density on lek-site selection by Black GrouseTetrao tetrixin the Alps

Effects of density on lek-site selection by Black GrouseTetrao tetrixin the Alps

Climate variability drives population cycling and synchrony

Local and population-level responses of Greater sage-grouse to oil and gas development and climatic variation in Wyoming

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