Development of a landscape model to predict reach-level sources of Roanoke logperch larvae in the upper Roanoke River system
March 2018 - January 2020
- National Fish and Wildlife Foundation
More complete knowledge of larval habitat associations and spatiotemporal patterns of emergence and dispersal regarding Roanoke Logperch (RLP) would help managers identify areas and periods crucial to recruitment, potentially making recovery actions more effective. The proposed work builds on a) previous work in the upper Roanoke River system (URR) showing that RLP larvae can be effectively sampled, then accurately identified; and b) a multi-scale model of habitat suitability based on occurrences of adult RLP. This project will provide new knowledge about early life-history of RLP and which habitats and periods are crucial for the species’ recruitment. The project is a collaboration among USGS, National Fish and Wildlife Foundation, and Virginia Tech.
1) Quantify reach-specific physical features correlated with production of RLP larvae;
2) Develop a spatially explicit model to predict which URR reaches are likely larval sources for RLP;
3) Characterize spatiotemporal patterns of emergence and development for RLP larvae;
4) Summarize linkages among water temperature, river discharge, day length, and emergence of RLP larvae.
|Research Publications||Publication Date|
Buckwalter, J.D., P.L. Angermeier, J. Argentina, S. Wolf, S. Floyd, and E.M. Hallerman. 2019.
Drift of larval darters (Family Percidae) in the upper Roanoke River basin, USA, characterized
using phenotypic and DNA barcoding markers. Fishes 4(4), 59; doi:10.3390/fishes4040059.