Skip to Main Content
Microhabitat estimation of an imperiled headwater fish, the Yazoo darter (Etheostoma raneyi), in Coastal Plain streamsAuthor(s): Ken A. Sterling; Melvin L. Warren
Source: Environmental Biology of Fishes
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
View PDF (4.0 MB)
DescriptionHeadwater fishes in the southeastern United States make up much of the fish biodiversity of the region yet many are imperiled. Despite this, the specific habitat requirements of imperiled headwater fishes in lowland Coastal Plain streams have rarely been quantified. Using data collected over three years of seasonal sampling we provide estimates of the microhabitat requirements
of the imperiled Yazoo darter (Etheostoma raneyi Suttkus and Bart), a small benthic insectivore. Our results indicate that the species is a microhabitat specialist and that optimum microhabitat within degraded contemporary streams consists of a narrow range of water depths (about 20–30 cm), current velocity ≥ 0.25 m·s−1, complex stable debris piles, rooted macrophytes, and likely coarse substrate. No pronounced or generalized seasonal shifts in microhabitat use occurs, and no evidence exists for intraspecific partitioning of microhabitat. Though stable and complex instream cover is one of the most important variables explaining variation in microhabitat use by Yazoo darters, such cover is rare in the degraded streams within the range of the species. Current conservation classifications of the Yazoo darter by governmental agencies and nongovernmental organizations
as well as associated management plans that are based onthe assumption that Yazoo darters are habitat generalists should be reviewed in recognition of the increased risk of decline becauseYazoo darters aremicrohabitat specialists. These considerations should also be extended to other closely related imperiled species of snubnose darters.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationSterling, Ken A.; Warren, Melvin L. 2017.Microhabitat estimation of an imperiled headwater fish, the Yazoo darter (Etheostoma raneyi), in Coastal Plain streams. Environmental Biology of Fishes. 53: 382-. https://doi.org/10.1007/s10641-017-0638-6.
KeywordsEtheostoma . Microhabitat . Grinnellian niche .Warmwater stream. Instream wood .Coastalplain
- Conservation assessment of the Yazoo Darter (etheostoma raneyi)
- Life History Of The Yazoo Darter (Percidae: Etheostoma Raneyi), A Species Endemic To North-Central Mississippi
- Genetic effects of habitat fragmentation and population isolation on Etheostoma raneyi (Percidae)
XML: View XML