Status of the Topeka Shiner in West-Central Iowa

Bakevich, Bryan D.; Pierce, Clay L.; Quist, Michael C.

doi:10.1674/0003-0031-174.2.350

Cited by 9 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Four oxbows were selected along each of three adjacent tributaries of the North Raccoon River: Buttrick Creek, Cedar Creek, and Hardin Creek (Figure ). Fifty‐five fish species have been collected in the NRRB over the last 6 years (Bakevich et al, ; Bakevich, Pierce, & Quist, ; Zambory et al, ), with 51 species in streams and 38 species in oxbows, including nine Species of Greatest Conservation Need (SGCN; Iowa Department of Natural Resources, ). As one of the remaining strongholds in Iowa and range‐wide for endangered Topeka shiners, the NRRB has been a focus of concern for declining abundance and prevalence (Bakevich et al, ), and a centre for oxbow habitat restoration activity coordinated by the US Fish and Wildlife Service (Kenney, ).…”

Section: Methodsmentioning

confidence: 99%

Floods, drying, habitat connectivity, and fish occupancy dynamics in restored and unrestored oxbows of West Central Iowa, USA

Fischer

Bakevich

Shea

et al. 2018

Aquatic Conservation

Self Cite

View full text Add to dashboard Cite

1. In the agricultural landscape of the Midwestern USA, waterways are highly altered.Oxbows are among the few remaining off-channel habitats associated with streams, supporting fish assemblages that include the endangered Topeka shiners Notropis topeka in portions of their remaining range. Oxbow restorations seek to increase the number and quality of oxbows for Topeka shiners. For oxbows to provide optimal habitat, periods of isolation from streams and connection with streams during floods are necessary. Water levels and patterns of drying and hydrological connectivity between 12oxbows and their neighboring streams in West Central Iowa were continuously monitored from May to October 2011, and fish assemblages were assessed for responses to the differing hydrodynamics using dynamic occupancy modelling.3. The 12 oxbows exhibited varied hydrodynamics and connectivity with streams.Two oxbows never contained fish; these oxbows never flooded and were among the three oxbows that were dry for the longest periods. 4. Occupancy modelling suggested that connection with the stream via floods significantly increased the probability of colonization, and low water level increased the probability of local extinction from oxbows. Thirteen of the 16 fish species encountered had detection probabilities over 60%, and eight had detection probabilities over 90%, including Topeka shiners. 5. None of the five previously restored oxbows flooded; all five contained fish, but only one contained Topeka shiners. Three of the four oxbows containing Topeka shiners flooded and all four dried at least once.6. These results suggest that planning for future oxbow restorations should consider:(i) sites that flood frequently; and (ii) construction methods promoting alternating periods of isolation from and connection with streams.

show abstract

Section: Methodsmentioning

confidence: 99%

Floods, drying, habitat connectivity, and fish occupancy dynamics in restored and unrestored oxbows of West Central Iowa, USA

Fischer

Bakevich

Shea

et al. 2018

Aquatic Conservation

Self Cite

View full text Add to dashboard Cite

show abstract

“…Several SGCN in Iowa and Minnesota are in decline (Sindt, Pierce & Quist, 2012; Bakevich, Pierce & Quist, 2015). In these areas where streams have been highly modified and degraded it is important to understand instream associations of SGCN.…”

Section: Discussionmentioning

confidence: 99%

“…A key factor contributing to its decline is habitat loss caused by stream channelization (Wall et al, 2004; Panella, 2012). Topeka shiner has been associated with oxbows in Iowa containing submerged vegetation and often co‐occurs with fathead minnows ( Pimephales promelas ) and orangespotted sunfish ( Lepomis humilis ; Bakevich, Pierce & Quist, 2013; Bakevich, Pierce & Quist, 2015; Campbell et al, 2016; Simpson et al, 2019). Instream restoration efforts have focused on removing structures that block fish movement (e.g.…”

Section: Introductionmentioning

confidence: 99%

Factors associated with distributions of six fishes of greatest conservation need in streams in midwestern USA

Simpson

Bybel

Weber

et al. 2021

Aquatic Conservation

Self Cite

View full text Add to dashboard Cite

1. Many fish species of greatest conservation need (SGCN) in Iowa and Minnesota, USA, have been in decline for decades. A key reason for the decline is the alteration and degradation of naturally flowing streams owing to land use changes resulting from agricultural practices. Populations of several fishes have been adversely affected by widespread stream channelization that has resulted in more homogeneous stream habitats throughout Iowa and Minnesota.2. The goal of this study was to determine the abiotic and fish assemblage characteristics associated with the presence of these rare fishes. Electrofishing and seining were used to sample fish assemblages and 43 abiotic characteristics were measured at 111 sites in the North Raccoon and Boone River basins in central Iowa and the Rock River and Beaver Creek basins in north-west Iowa and southwest Minnesota during 2016 and 2017.3. Six SGCN, including the federally endangered Topeka shiner (Notropis topeka), were included in statistical modelling to determine habitat and fish assemblage characteristics associated with their presence. 4. Species-specific nonmetric multidimensional scaling ordinations indicated that abiotic characteristics and fish assemblages often differed between sites where SGCN were present and absent. Random forest and logistic regression models suggested that the presence of four of six SGCN were positively associated with species richness, whereas all other 10 important abiotic and fish assemblage variables were unique to only one or two of the six SGCN.5. Topeka shiners were present at 36% of sites and were positively associated with orangespotted sunfish (Lepomis humilis) catch per unit effort while being negatively associated with canopy cover and fantail darter (Etheostoma flabellare) catch per unit effort.

show abstract

“…Anthropogenic alterations to streams such as channelization, stream diversion, and impoundment have dramatically slowed the natural creation of off-channel habitats, limited lateral connectivity of the stream to its floodplain, and diminished instream water quality [8][9][10]. Due These sub-basin watersheds were selected as the focus of this study as they comprise the known extant populations within Iowa, and all three areas are of current off-channel restorations to support the conservation of the Topeka Shiner (Notropis topeka) [28][29][30][31]. The Topeka Shiner is a small cyprinid federally listed as endangered by the U.S.…”

Section: Introductionmentioning

confidence: 99%

The Development of a GIS Methodology to Identify Oxbows and Former Stream Meanders from LiDAR-Derived Digital Elevation Models

et al. 2018

View full text Add to dashboard Cite

Anthropogenic development of floodplains and alteration to natural hydrological regimes have resulted in extensive loss of off-channel habitat. Interest has grown in restoring these habitats as an effective conservation strategy for numerous aquatic species. This study developed a process to reproducibly identify areas of former stream meanders to assist future off-channel restoration site selections. Three watersheds in Iowa and Minnesota where off-channel restorations are currently being conducted to aid the conservation of the Topeka Shiner (Notropis topeka) were selected as the study area. Floodplain depressions were identified with LiDAR-derived digital elevation models, and their morphologic and topographic characteristics were described. Classification tree models were developed to distinguish relic streams and oxbows from other landscape features. All models demonstrated a strong ability to distinguish between target and non-target features with area under the receiver operator curve (AUC) values ≥ 0.82 and correct classification rates ≥ 0.88. Solidity, concavity, and mean height above channel metrics were among the first splits in all trees. To compensate for the noise associated with the final model designation, features were ranked by their conditional probability. The results of this study will provide conservation managers with an improved process to identify candidate restoration sites.

show abstract

Status of the Topeka Shiner in West-Central Iowa

Cited by 9 publications

References 17 publications

Floods, drying, habitat connectivity, and fish occupancy dynamics in restored and unrestored oxbows of West Central Iowa, USA

Floods, drying, habitat connectivity, and fish occupancy dynamics in restored and unrestored oxbows of West Central Iowa, USA

Factors associated with distributions of six fishes of greatest conservation need in streams in midwestern USA

The Development of a GIS Methodology to Identify Oxbows and Former Stream Meanders from LiDAR-Derived Digital Elevation Models

Contact Info

Product

Resources

About