Evidence map›Paper›PMID 27718065›Full record

ArticleOecologia2017

Seasonal fecundity is not related to geographic position across a species' global range despite a central peak in abundance.

Katharine J Ruskin, Matthew A Etterson, Thomas P Hodgman, Alyssa C Borowske, Jonathan B Cohen, Chris S Elphick, Christopher R Field, Rebecca A Kern, Erin King, Alison R Kocek and 6 more

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Oecologia, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
4.0field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 27 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors at 9 institutions in 1 country.

Katharine J RuskinSchool of Biology and Ecology, Climate Change Institute, University of Maine, 200 Clapp Greenhouse, Orono, ME, 04469, USA. katharine.ruskin@maine.edu.
Matthew A EttersonMid-Continent Ecology Division, U. S. Environmental Protection Agency, 6201 Congdon Boulevard, Duluth, MN, 55804, USA.
Thomas P HodgmanMaine Department of Inland Fisheries and Wildlife, Bird Group, 650 State Street, Bangor, ME, 04401, USA.
Alyssa C BorowskeDepartment of Ecology and Evolutionary Biology, Center for Conservation and Biodiversity, University of Connecticut, 75 North Eagleville Road, U-43, Storrs, CT, 06269, USA.
Jonathan B CohenDepartment of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY, 13210, USA.
Chris S ElphickDepartment of Ecology and Evolutionary Biology, Center for Conservation and Biodiversity, University of Connecticut, 75 North Eagleville Road, U-43, Storrs, CT, 06269, USA.
Christopher R FieldDepartment of Ecology and Evolutionary Biology, Center for Conservation and Biodiversity, University of Connecticut, 75 North Eagleville Road, U-43, Storrs, CT, 06269, USA.
Rebecca A KernDepartment of Entomology and Wildlife Ecology, University of Delaware, 250 Townsend Hall, Newark, DE, 19716, USA.
Erin KingU. S. Fish and Wildlife Service, Region 5 Division of Natural Resources, Stewart B. McKinney NWR, 733 Old Clinton Road, Westbrook, CT, 06498, USA.
Alison R KocekDepartment of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY, 13210, USA.
Adrienne I KovachDepartment of Natural Resources and the Environment, University of New Hampshire, 46 College Road, Durham, NH, 03824, USA.
Kathleen M O'BrienU. S. Fish and Wildlife Service, Rachel Carson National Wildlife Refuge, 321 Port Road, Wells, ME, 04090, USA.
Nancy PauU. S. Fish and Wildlife Service, Parker River National Wildlife Refuge, 6 Plum Island Turnpike, Newburyport, MA, 01950, USA.
W Gregory ShriverDepartment of Entomology and Wildlife Ecology, University of Delaware, 250 Townsend Hall, Newark, DE, 19716, USA.
Jennifer WalshDepartment of Natural Resources and the Environment, University of New Hampshire, 46 College Road, Durham, NH, 03824, USA.
Brian J OlsenSchool of Biology and Ecology, Climate Change Institute, University of Maine, 200 Clapp Greenhouse, Orono, ME, 04469, USA.
United States Fish and Wildlife Service · USUniversity of Connecticut · USUniversity of Maine · USUniversity of New Hampshire · USEnvironmental Protection Agency · USState Street (United States) · USSUNY College of Environmental Science and Forestry · USUniversity of Delaware · USYork University · US

Funding

Intramural EPA EPA999999
6 · The paper itself

Abstract

The range of a species is determined by the balance of its demographic rates across space. Population growth rates are widely hypothesized to be greatest at the geographic center of the species range, but indirect empirical support for this pattern using abundance as a proxy has been mixed, and demographic rates are rarely quantified on a large spatial scale. Therefore, the texture of how demographic rates of a species vary over its range remains an open question. We quantified seasonal fecundity of populations spanning the majority of the global range of a single species, the saltmarsh sparrow (Ammodramus caudacutus), which demonstrates a peak of abundance at the geographic center of its range. We used a novel, population projection method to estimate seasonal fecundity inclusive of seasonal and spatial variation in life history traits that contribute to seasonal fecundity. We replicated our study over 3 years, and compared seasonal fecundity to latitude and distance among plots. We observed large-scale patterns in some life history traits that contribute to seasonal fecundity, such as an increase in clutch size with latitude. However, we observed no relationship between latitude and seasonal fecundity. Instead, fecundity varied greatly among plots separated by as little as 1 km. Our results do not support the hypothesis that demographic rates are highest at the geographic and abundance center of a species range, but rather they suggest that local drivers strongly influence saltmarsh sparrow fecundity across their global range.

Indexed as

FertilitySeasonsSongbirdsAnimalsClutch SizeDemographyAmmodramus caudacutusBiogeographyFecundityLatitudinal gradientsSpecies range

Identifiers

PMID27718065
PMCPMC11209861
OpenAlexW2529207237

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.