You are seeing a free-to-access but limited selection of the activity Altmetric has collected about this research output.
Click here to find out more.
X Demographics
Mendeley readers
Attention Score in Context
| Title |
Holocene changes in the trophic ecology of an apex marine predator in the South Atlantic Ocean
|
|---|---|
| Published in |
Oecologia, November 2016
|
| DOI | 10.1007/s00442-016-3781-4 |
| Pubmed ID | |
| Authors |
Damián G. Vales, Luis Cardona, Atilio F. Zangrando, Florencia Borella, Fabiana Saporiti, R. Natalie P. Goodall, Larissa Rosa de Oliveira, Enrique A. Crespo |
| Abstract |
Predators may modify their diets as a result of both anthropogenic and natural environmental changes. Stable isotope ratios of nitrogen and carbon in bone collagen have been used to reconstruct the foraging ecology of South American fur seals (Arctocephalus australis) in the southwestern South Atlantic Ocean since the Middle Holocene, a region inhabited by hunter-gatherers by millennia and modified by two centuries of whaling, sealing and fishing. Results suggest that the isotopic niche of fur seals from Patagonia has not changed over the last two millennia (average for the period: δ(13)C2200-0BP = -13.4 ± 0.5‰, δ(15)N2200-0BP = 20.6 ± 1.1‰). Conversely, Middle Holocene fur seals fed more pelagically than their modern conspecifics in the Río de la Plata region (δ(13)C7000BP = -15.9 ± 0.6‰ vs. δ(13)CPRESENT = -13.5 ± 0.8‰) and Tierra del Fuego (δ(13)C6400-4300BP = -15.4 ± 0.5‰ vs. δ(13)CPRESENT = -13.2 ± 0.7‰). In the latter region, Middle Holocene fur seals also fed at a higher trophic level than their modern counterparts (δ(15)N6400-4300BP = 20.5 ± 0.5‰ vs. δ(15)NPRESENT = 19.0 ± 1.6‰). Nevertheless, a major dietary shift was observed in fur seals from Tierra del Fuego during the nineteenth century (δ(13)C100BP = -17.2 ± 0.3‰, δ(15)N100BP = 18.6 ± 0.7‰), when marine primary productivity plummeted and the fur seal population was decimated by sealing. Disentangling the relative roles of natural and anthropogenic factors in explaining this dietary shift is difficult, but certainly the trophic position of fur seals has changed through the Holocene in some South Atlantic regions. |
X Demographics
The data shown below were collected from the profiles of 10 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Argentina | 5 | 50% |
| United Kingdom | 2 | 20% |
| Unknown | 3 | 30% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 8 | 80% |
| Scientists | 1 | 10% |
| Science communicators (journalists, bloggers, editors) | 1 | 10% |
Mendeley readers
The data shown below were compiled from readership statistics for 55 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 1 | 2% |
| Unknown | 54 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 16 | 29% |
| Student > Ph. D. Student | 10 | 18% |
| Student > Bachelor | 6 | 11% |
| Student > Master | 5 | 9% |
| Student > Doctoral Student | 2 | 4% |
| Other | 7 | 13% |
| Unknown | 9 | 16% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 27 | 49% |
| Environmental Science | 7 | 13% |
| Arts and Humanities | 4 | 7% |
| Earth and Planetary Sciences | 2 | 4% |
| Social Sciences | 2 | 4% |
| Other | 2 | 4% |
| Unknown | 11 | 20% |
Attention Score in Context
This research output has an Altmetric Attention Score of 35. 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 16 May 2017.
All research outputs
#1,158,647
of 25,595,500 outputs
Outputs from Oecologia
#111
of 4,523 outputs
Outputs of similar age
#22,919
of 418,155 outputs
Outputs of similar age from Oecologia
#2
of 41 outputs
Altmetric has tracked 25,595,500 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 95th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,523 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 7.2. This one has done particularly well, scoring higher than 97% of its peers.
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 418,155 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 94% of its contemporaries.
We're also able to compare this research output to 41 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 97% of its contemporaries.