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Decadal declines in avian herbivore reproduction: density‐dependent nutrition and phenological mismatch in the arctic

Overview of attention for article published in Ecology, April 2017
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  • Above-average Attention Score compared to outputs of the same age (61st percentile)
  • Average Attention Score compared to outputs of the same age and source

Mentioned by

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7 tweeters
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1 Facebook page

Citations

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25 Dimensions

Readers on

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43 Mendeley
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Title
Decadal declines in avian herbivore reproduction: density‐dependent nutrition and phenological mismatch in the arctic
Published in
Ecology, April 2017
DOI 10.1002/ecy.1856
Pubmed ID
Authors

Ross, Megan V., Alisauskas, Ray T., Douglas, David C., Kellett, Dana K.

Abstract

A full understanding of population dynamics depends not only on estimation of mechanistic contributions of recruitment and survival, but also knowledge about the ecological processes that drive each of these vital rates. The process of recruitment in particular may be protracted over several years, and can depend on numerous ecological complexities until sexually mature adulthood is attained. We addressed long term declines (23 breeding seasons, 1992-2014) in the per capita production of young by both Ross's geese (Chen rossii) and lesser snow geese (Chen caerulescens caerulescens) nesting at Karrak Lake in Canada's central arctic. During this period there was a contemporaneous increase from 0.4 to 1.1 million adults nesting at this colony. We evaluated whether (i) density-dependent nutritional deficiencies of pre-breeding females or (ii) phenological mismatch between peak gosling hatch and peak forage quality, inferred from NDVI on the brood-rearing areas, may have been behind decadal declines in the per capita production of goslings. We found that, in years when pre-breeding females arrived to the nesting grounds with diminished nutrient reserves, the proportional composition of young during brood-rearing was reduced for both species. Furthermore, increased mismatch between peak gosling hatch and peak forage quality contributed additively to further declines in gosling production, in addition to declines caused by delayed nesting with associated subsequent negative effects on clutch size and nest success. The degree of mismatch increased over the course of our study because of advanced vegetation phenology without a corresponding advance in goose nesting phenology. Vegetation phenology was significantly earlier in years with warm surface air temperatures measured in spring (i.e., 25 May - 30 June). We suggest that both increased phenological mismatch and reduced nutritional condition of arriving females were behind declines in population-level recruitment, leading to the recent attenuation in population growth of snow geese. This article is protected by copyright. All rights reserved.

Twitter Demographics

The data shown below were collected from the profiles of 7 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 43 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 43 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 9 21%
Unspecified 8 19%
Student > Master 8 19%
Researcher 7 16%
Student > Bachelor 5 12%
Other 6 14%
Readers by discipline Count As %
Agricultural and Biological Sciences 23 53%
Unspecified 9 21%
Environmental Science 8 19%
Earth and Planetary Sciences 2 5%
Medicine and Dentistry 1 2%
Other 0 0%

Attention Score in Context

This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 June 2017.
All research outputs
#6,554,928
of 12,960,324 outputs
Outputs from Ecology
#3,101
of 4,981 outputs
Outputs of similar age
#99,388
of 261,509 outputs
Outputs of similar age from Ecology
#66
of 98 outputs
Altmetric has tracked 12,960,324 research outputs across all sources so far. This one is in the 49th percentile – i.e., 49% of other outputs scored the same or lower than it.
So far Altmetric has tracked 4,981 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.2. This one is in the 34th percentile – i.e., 34% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 261,509 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 61% of its contemporaries.
We're also able to compare this research output to 98 others from the same source and published within six weeks on either side of this one. This one is in the 31st percentile – i.e., 31% of its contemporaries scored the same or lower than it.