Top Tweets for #Break4

over 2 years ago

5/6 #BOUsci23 #BREAK4 We also found that seven of the ten species were significantly more sensitive in places that had become warmer between 2002 and 2019.

aistrand's tweet photo. 5/6 #BOUsci23 #BREAK4

We also found that seven of the ten species were significantly more sensitive in places that had become warmer between 2002 and 2019. https://t.co/Rfkr08hG6I

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over 2 years ago

4/6 #BOUsci23 #BREAK4 We found that species that arrive earlier in the season are more sensitive to air temperature change than species that arrive later.

aistrand's tweet photo. 4/6 #BOUsci23 #BREAK4

We found that species that arrive earlier in the season are more sensitive to air temperature change than species that arrive later. https://t.co/ZEQ5kGMgyP

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over 2 years ago

3/6 #BOUsci23 #BREAK4 We estimated mean spring arrival days for each species-cell-year combination (10 species across the eastern U.S. between 2002 and 2019) using logistic generalized additive and intrinsic conditional autoregressive (iCAR) models.

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over 2 years ago

2/6 #BOUsci23 #BREAK4 We used 18 years of eBird data to investigate the influence of species-level traits such as mean body size, migration distance, migration speed, and arrival day on the sensitivity of aerial insectivores’ spring migration phenology to air temperature change.

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over 2 years ago

1/6 #BOUsci23 #BREAK4 Over the past few decades, many species of birds have shifted their migration phenology in response to climate change. These shifts vary in magnitude and direction across species, but the mechanisms responsible for this variation are poorly understood.

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about 3 years ago

6 #BOU2023 #BREAK4 Range shift may skew our reaction norm estimates and add plasticity to the system. With all this previously evolved plasticity, what further evolutionary responses do mobile passerine migrants need to meet the climate change challenge?

markeddowes's tweet photo. 6 #BOU2023 #BREAK4 Range shift may skew our reaction norm estimates and add plasticity to the system. With all this previously evolved plasticity, what further evolutionary responses do mobile passerine migrants need to meet the climate change challenge? https://t.co/olOCuqsQ5O

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about 3 years ago

5 #BOU2023 #BREAK4 Confounding factors, known and unknown, add plasticity and data uncertainty to our reaction norm estimates, complicating matters further.

markeddowes's tweet photo. 5 #BOU2023 #BREAK4 Confounding factors, known and unknown, add plasticity and data uncertainty to our reaction norm estimates, complicating matters further. https://t.co/yU5qWpjIjM

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about 3 years ago

4 #BOU2O23 #BREAK4 Lots of plasticity is similarly evident in first egg date timing but estimates for the observed trend (dR/dt) and plasticity dependent component (dR/dT x dT/dt) overlap within the standard error limits so any evolutionary component is in the noise.

markeddowes's tweet photo. 4 #BOU2O23 #BREAK4 Lots of plasticity is similarly evident in first egg date timing but estimates for the observed trend (dR/dt) and plasticity dependent component (dR/dT x dT/dt) overlap within the standard error limits so any evolutionary component is in the noise. https://t.co/EqYS4XMriS

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about 3 years ago

3 #BOU2023 #BREAK4 Lots of plasticity is evident in long-distance passerine migrant timing but there is no reliable means of quantifying the temperature response along the whole migration route to allow a sensible dR/dT vs dR/dt comparison.

markeddowes's tweet photo. 3 #BOU2023 #BREAK4 Lots of plasticity is evident in long-distance passerine migrant timing but there is no reliable means of quantifying the temperature response along the whole migration route to allow a sensible dR/dT vs dR/dt comparison. https://t.co/pnyy0KTtEF

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about 3 years ago

2 #BOU2023 #BREAK4 Two types of empirical population level behavioural reaction norms are available: inter-annual temperature dependence (dR/dT) and trend with time/year (dR/dt). For the temperature trend with time (dT/dt), how does dR/dt relate to dR/dT?

markeddowes's tweet photo. 2 #BOU2023 #BREAK4 Two types of empirical population level behavioural reaction norms are available: inter-annual temperature dependence (dR/dT) and trend with time/year (dR/dt). For the temperature trend with time (dT/dt), how does dR/dt relate to dR/dT? https://t.co/l5rwj3CuTe

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about 3 years ago

1 #BOU23 #BREAK4 #ornithology For empiricists studying migrant arrival and first egg dates the dominant impression is of plastic responses to inter-annual weather variability. With all that plasticity how will we distinguish evolutionary responses to climate change?

markeddowes's tweet photo. 1 #BOU23 #BREAK4 #ornithology For empiricists studying migrant arrival and first egg dates the dominant impression is of plastic responses to inter-annual weather variability. With all that plasticity how will we distinguish evolutionary responses to climate change? https://t.co/nuv3rxDkAI

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about 3 years ago

6/6 #BOU2023 #BREAK4 To sum up: evidence of change in the realised Grinnellian niches for several species over 25 years. Evidence of non-random association between niche changes and both population trends and species traits. Read the full article: https://t.co/VMoibEXaMR

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about 3 years ago

5/6 #BOU2023 #BREAK4 Unfilling was greater for large species, positively correlated with clutch size and negatively with number of annual broods. Long-distance migrants and farmland birds showed greater unfilling. Woodland and natural open habitat species showed greater expansion

TirozziPietro's tweet photo. 5/6 #BOU2023 #BREAK4 Unfilling was greater for large species, positively correlated with clutch size and negatively with number of annual broods. Long-distance migrants and farmland birds showed greater unfilling. Woodland and natural open habitat species showed greater expansion https://t.co/yNY5jl33fl

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about 3 years ago

4/6 #BOU2023 #BREAK4 Niche expansion was positively correlated with population trends, while Schoener's D (niche overlap) was negatively correlated (close to the significance level) with trends. See https://t.co/oKNDm4Rm7C for trends estimation methodology.

TirozziPietro's tweet photo. 4/6 #BOU2023 #BREAK4 Niche expansion was positively correlated with population trends, while Schoener's D (niche overlap) was negatively correlated (close to the significance level) with trends. See https://t.co/oKNDm4Rm7C for trends estimation methodology. https://t.co/kVkllTtzAr

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about 3 years ago

3/6 #BOU2023 #BREAK4 Niche conservatism: 56% of the species. Niche divergence: 7 species. Centroids shifted towards warmer climatic conditions and lower elevations. Suggestions: 1) delay in tracking climatic component, 2) change of habitat, 3) colonisation of new environments.

TirozziPietro's tweet photo. 3/6 #BOU2023 #BREAK4 Niche conservatism: 56% of the species. Niche divergence: 7 species. Centroids shifted towards warmer climatic conditions and lower elevations. Suggestions: 1) delay in tracking climatic component, 2) change of habitat, 3) colonisation of new environments. https://t.co/ZxW7Fx1uQk

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about 3 years ago

2/6 #BOU2023 #BREAK4 We compared the realised Grinnellian niche between T1 (1992-95-96) and T2 (2015-16-17) for 71 breeding birds in northern Italy and we explored the link of niche changes with both population trends and traits. See https://t.co/iWqWhE3jPa for species trends.

TirozziPietro's tweet photo. 2/6 #BOU2023 #BREAK4 We compared the realised Grinnellian niche between T1 (1992-95-96) and T2 (2015-16-17) for 71 breeding birds in northern Italy and we explored the link of niche changes with both population trends and traits. See https://t.co/iWqWhE3jPa for species trends. https://t.co/pFkC00uhTF

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