Occupancy and Abundance Modeling of the Endangered Yellowcheek Darter in Arkansas

Magoulick, Daniel D.; Lynch, Dustin T.

doi:10.1643/ce-14-116

Cited by 11 publications

(4 citation statements)

References 16 publications

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“…Fundulus olivaceus , S. atromaculatus and E. claviformis were sampled from six drainages (BP, BB, PG, PR, BL and LR), E. artesiae was sampled from BP and BB, E. whipplei was sampled from MW and LR, and E. parvipinne was sampled from PG and PR (Table ). Two of the drainages have large dams and reservoirs on the mainstem (PR: Ross Barnett, 1963, 134 km 2 ; LR: Greers Ferry Lake, 1964, 164 km 2 ) and were used for analyses investigating effects of impoundment (Figure ) (De Lanois & Green, ; Magoulick & Lynch, ; Zhang & Liu, ). For each drainage and species, we collected fin tissue from 15 individuals in six populations broadly located throughout each drainage (24 species–drainage combinations ×6 populations ×15 individuals =2,160 total; Table ).…”

Section: Methodsmentioning

confidence: 99%

Ecological and landscape effects on genetic distance in an assemblage of headwater fishes

Schmidt

Schaefer

2017

Ecology of Freshwater Fish

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Environmental divergence along hierarchically structured longitudinal gradients may constitute barriers to gene flow in river networks for headwater specialised species.While known, this phenomenon has not been well studied, especially with regard to degree of headwater specialisation. We examined six headwater species that differ in habitat specialisation to assess whether patterns of differentiation vary according to geographic or environmental distance. We also identified regional environmental or anthropogenically induced fragmentation effects by comparing within-drainage patterns of genetic distance across replicate watersheds. We used a comparative modelling framework to determine whether isolation by distance or isolation by resistance of large river habitats was a better predictor of genetic distance across species. The influence of reservoir presence and regional network characteristics that may influence the hydrology and size of large river habitats were also assessed. Resistance effects from large rivers were closely related to headwater specialisation, with increased specialisation leading to increased resistance and loss of drainagewide population connectivity. These results affirm that dendritic networks naturally fragment headwater specialised species. Further isolation from anthropogenic fragmentation was detected in two of the six drainages, indicating interactions with system-specific conditions. Landscape variables related to the hydrology of large rivers also affected genetic distance in predicted ways, supporting the importance of large rivers in genetically structuring headwater species in drainage networks. K E Y W O R D Sisolation by distance, isolation by resistance, landscape genetics, niche breadth, reservoir, riverscape genetics

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Section: Methodsmentioning

confidence: 99%

Ecological and landscape effects on genetic distance in an assemblage of headwater fishes

Schmidt

Schaefer

2017

Ecology of Freshwater Fish

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“…Natural streamflow regimes are threatened worldwide by a host of anthropogenic factors, including construction of dams and diversion structures, groundwater withdrawals from aquifers, and other hydromorphological alterations (Sondergaard and Jeppesen, 2007;Carlisle et al, 2010). Additionally, extreme climate events are expected to increase as a result of global climatic change, including many events that directly impact lotic ecosystems, such as increases in drought frequency, duration, and intensity in many regions of the world (Beniston et al, 2007;Beche et al, 2009), including in the focal region of this study, where these phenomena have already had consequences for rare and imperiled aquatic species (Magoulick and Lynch, 2015). The potential interactive effects of natural and anthropogenic stressors such as drought, climate change, and human water use on ecosystems highlight the need for increased understanding of each stressor (Christensen et al, 2006;Beche et al, 2009).…”

Section: Introductionmentioning

confidence: 93%

Flow alteration-ecology relationships in Ozark Highland streams: Consequences for fish, crayfish and macroinvertebrate assemblages

Lynch

Leasure

Magoulick

2019

Science of The Total Environment

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• Flow alteration-ecological response relationships vary temporally. • Relationships also vary between taxonomic assemblages within the same community. • Flow magnitude and frequency are the categories of alteration that affect most taxa. • The majority of important flow metrics are altered relative to expected values. • Effective conservation of stream communities depends on complex suite of variables.

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“…Headwaters sometimes provide the last refuge for species threatened by loss of habitat elsewhere in the watershed. Examples include the federally endangered Yellowcheek Darter Etheostoma moorei (endemic to the Boston Mountains of Arkansas; Robison and Buchanan ; Magoulick and Lynch ) and the federally threatened Leopard Darter Percina pantherina (endemic to a few headwater streams in the Ouachita Mountains of southeastern Oklahoma and southwestern Arkansas; Zale et al. ).…”

Section: Headwaters Support Imperiled Speciesmentioning

confidence: 99%

Headwater Streams and Wetlands are Critical for Sustaining Fish, Fisheries, and Ecosystem Services

Colvin¹,

et al. 2019

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Headwater streams and wetlands are integral components of watersheds that are critical for biodiversity, fisheries, ecosystem functions, natural resource‐based economies, and human society and culture. These and other ecosystem services provided by intact and clean headwater streams and wetlands are critical for a sustainable future. Loss of legal protections for these vulnerable ecosystems would create a cascade of consequences, including reduced water quality, impaired ecosystem functioning, and loss of fish habitat for commercial and recreational fish species. Many fish species currently listed as threatened or endangered would face increased risks, and other taxa would become more vulnerable. In most regions of the USA, increased pollution and other impacts to headwaters would have negative economic consequences. Headwaters and the fishes they sustain have major cultural importance for many segments of U.S. society. Native peoples, in particular, have intimate relationships with fish and the streams that support them. Headwaters ecosystems and the natural, socio‐cultural, and economic services they provide are already severely threatened, and would face even more loss under the Waters of the United States (WOTUS) rule recently proposed by the Trump administration.

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Occupancy and Abundance Modeling of the Endangered Yellowcheek Darter in Arkansas

Cited by 11 publications

References 16 publications

Ecological and landscape effects on genetic distance in an assemblage of headwater fishes

Ecological and landscape effects on genetic distance in an assemblage of headwater fishes

Flow alteration-ecology relationships in Ozark Highland streams: Consequences for fish, crayfish and macroinvertebrate assemblages

Headwater Streams and Wetlands are Critical for Sustaining Fish, Fisheries, and Ecosystem Services

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