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Data describing a predatory fish invasion on a riverine food web

Dates

Publication Date
Start Date
2022
End Date
2023

Citation

Hodgson, O.C., Stark, S., Schall, M.K., Smith, G.D., and Wagner, T., 2024, Data describing a predatory fish invasion on a riverine food web.: U.S. Geological Survey data release, https://doi.org/10.5066/P1DHTVLV.

Summary

Catfishes are opportunistic feeders that are among the world's worst invasive species. Flathead catfish *Pylodictus olivaris* -- a large predatory catfish -- were first detected in the Susquehanna River, Pennsylvania, USA in 2002. Since then, they established a viable and rapidly growing population that is expanding its range throughout the river system. Although the predatory effects of invasive catfishes on native fish communities have been documented, the effects of invasion on riverine food webs is poorly understood. The goal of this study was to quantify the effects of invasive flathead catfish on the trophic position and isotopic niche space of components of the Susquehanna River food web by comparing invaded and non-invaded [...]

Contacts

Point of Contact :
Tyler Wagner
Originator :
Olivia C. Hodgson, Sydney Stark, Megan K Schall, Geoffrey D. Smith, Tyler Wagner
Metadata Contact :
Tyler Wagner
Distributor :
GS ScienceBase
Publisher :
U.S. Geological Survey
USGS Mission Area :
Ecosystems
SDC Data Owner :
Cooperative Research Units

Attached Files

Click on title to download individual files attached to this item.

FHC_site_info.csv 509 Bytes text/csv
SIA_community_sampling_data_2023.csv 17.5 KB text/csv
sia_dat.csv 38.45 KB text/csv

Purpose

The primary objective of this dataset is to facilitate ecological analysis of food web dynamics and trophic positioning within the Susquehanna River ecosystem. Specifically, it aims to assess the impact of flathead catfish invasion on food web structure and energy flow. By analyzing stable isotope ratios of key food web components, this dataset seeks to enhance the understanding of trophic relationships and the ecological role of flathead catfish as both a predator and competitor in the river ecosystem. Additionally, the dataset provides precise geographical coordinates for each sampling location, allowing for accurate mapping and referencing, which can inform conservation efforts, invasive species management, and future research on riverine food webs.

Rights

This work is marked with Creative Commons Zero v1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/).

Map

Communities

  • Cooperative Fish and Wildlife Research Units
  • USGS Data Release Products

Tags

Categories
Theme
Place
Harvest Set
USGS Scientific Topic Keyword

Provenance

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P1DHTVLV

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