The DOI matches its Crossref record.
Morphological Variation and Width of Ecological Niche
Abstract
In six bird species convenient for study, niches are known to be broader on some islands than on the mainland. In every case there is also greater variation in a bill measurement on the islands, except for one species in which the niche on the Canary Islands is narrower than that on the mainland. The adjusted variances average about twice as great in the broader niche. These and other results suggest that continuous variation within local populations is often adaptive in itself and is not part of the genetic or phenotypic load.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Fischer, M., Bossdorf, O., Gockel, S., Hänsel, F., Hemp, A., Hessenmöller, D., Korte, G., Nieschulze, J., Pfeiffer, S., Prati, D., et al. (2010) · Basic and Applied Ecology · doi:10.1016/j.baae.2010.07.009 · Cited by 849
The Multidimensional Nutritional Niche
Machovsky-Capuska, G. E., Senior, A. M., Simpson, S. J., & Raubenheimer, D. (2016) · Trends in Ecology & Evolution · doi:10.1016/j.tree.2016.02.009 · Cited by 219
Zalewski, A. (2007) · Acta Theriologica · doi:10.1007/bf03194220 · Cited by 69
She Shapes Events as they Come: Plasticity in Female Insect Reproduction
Hodin, J. (2009) · Phenotypic Plasticity of Insects · doi:10.1201/b10201-12 · Cited by 28
Metadata
- Authors
- Van Valen, L.
- Venue
- The American Naturalist
- Publisher
- University of Chicago Press
- Published
- 1965-09
- Volume
- 99
- Issue
- 908
- Pages
- 377-390
- ISSN
- 0003-0147 (ISSN-L)
- 1537-5323
- OpenAlex
- W2061851999
- Cited by
- 1,370
- References
- 0
- FWCI
- 15.27
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Morphological Variation and Width of Ecological Niche. https://app.cochat.ai/papers/10.1086/282379
- The paper
- Van Valen, L. (1965). Morphological Variation and Width of Ecological Niche. The American Naturalist. https://doi.org/10.1086/282379
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
