Table 4.
Extirpation concentration (XC95) values for fish that were observed at a minimum of 25 sites. Rank is the order of the fish species from smallest to greatest species XC95 in the species sensitivity distribution. The XC95 is listed as approximate (≈) if the generalized additive model (GAM) mean curve at maximum specific conductivity is greater than 0 but the lower confidence limit is approximately 0 (<1% of the maximum mean modeled probability). The XC95 is listed as greater than (>), if the GAM lower confidence limit is greater than 0.
| Rank | Species | Species XC95 | Genus XC95 | Rank | Species | Species XC95 | Genus XC95 |
|---|---|---|---|---|---|---|---|
| 1 | Etheostoma baileyi | 322 | >3,226 | 51 | Lepomis gulosus | >1,958 | – |
| 2 | Noturus insignis | 349 | >2,578 | 52 | Phenacobius mirabilis | >2,000 | >2,000 |
| 3 | Erimyzon oblongus | 376 | 376 | 53 | Clinostomus elongatus | >2,009 | – |
| 4 | Esox niger | ≈467 | >1,572 | 54 | Cottus bairdii | >2,046 | – |
| 5 | Salvelinus fontinalis | 508 | 508 | 55 | Aplodinotus grunniens | >2,099 | >2,099 |
| 6 | Cottus girardi | ≈518 | >1,961 | 56 | Etheostoma camurum | >2,122 | – |
| 7 | Clinostomus funduloides | 535 | >1,790 | 57 | Lepomis gibbosus | >2,157 | – |
| 8 | Cottus carolinae | 542 | –a | 58 | Notropis volucellus | >2,122 | – |
| 9 | Cottus cognatus | ≈557 | – | 59 | Pylodictis olivaris | >2,122 | >2,122 |
| 10 | Nocomis leptocephalus | ≈565 | >2,303 | 60 | Notropis atherinoides | >2,157 | – |
| 11 | Etheostoma kennicotti | ≈586 | – | 61 | Pomoxis annularis | >2,278 | – |
| 12 | Chrosomus oreas | 592 | ≈3,094 | 62 | Nocomis micropogon | >2,303 | – |
| 13 | Notropis telescopus | 675 | >4,000 | 63 | Lampetra aepyptera | 2,323 | 2,323 |
| 14 | Cyprinella analostana | 682 | >4,000 | 64 | Notropis buccatus | >2,323 | – |
| 15 | Margariscus margarita | >685 | >685 | 65 | Percina caprodes | >2,359 | – |
| 16 | Lythrurus fasciolaris | 707 | 1,081 | 66 | Lepomis megalotis | 2,578 | – |
| 17 | Luxilus cornutus | ≈724 | >4,000 | 67 | Etheostoma nigrum | >2,578 | – |
| – | Erimystax spp. | –b | 744 | 68 | Etheostoma variatum | >2,578 | – |
| 18 | Fundulus diaphanus | 759 | 1,090 | 69 | Moxostoma duquesnei | >2,578 | >2,578 |
| 19 | Salmo trutta | ≈759 | ≈759 | 70 | Moxostoma erythrurum | >2.578 | – |
| 20 | Exoglossum maxillingua | >760 | 576 | 71 | Noturus flavus | >2,578 | – |
| 21 | Percina peltata | ≈822 | >2,578 | 72 | Pimephales vigilax | >2,578 | – |
| 22 | Lepomis auritus | 851 | >2,750 | 73 | Micropterus salmoides | >2,630 | >3,066 |
| 23 | Cyprinella whipplei | 854 | – | 74 | Notropis rubellus | >2,630 | – |
| 24 | Etheostoma olmstedi | >898 | – | 75 | Micropterus dolomieu | >2,641 | – |
| 25 | Anguilla rostrata | >898 | >898 | 76 | Dorosoma cepedianum | >2,750 | >2,750 |
| 26 | Hybopsis amblops | ≈982 | ≈982 | 77 | Ictalurus punctatus | >2,750 | >2,750 |
| 27 | Semotilus corporalis | >1,000 | >3,066 | 78 | Labidesthes sicculus | >2,750 | >2,750 |
| 28 | Moxostoma carinatum | 1,040 | >2,578 | 79 | Lepomis macrochirus | >2,750 | – |
| 29 | Oncorhynchus mykiss | >1,075 | >1,075 | 80 | Catostomus commersoni | >2,755 | >2,755 |
| 30 | Esox lucius | >1,103 | – | 81 | Etheostoma zonale | >3,066 | – |
| 31 | Percopsis omiscomaycus | ≈1,105 | ≈1,105 | 82 | Semotilus atromaculatus | >3,066 | – |
| 32 | Noturus miurus | 1,150 | – | 83 | Notropis photogenis | >3,066 | – |
| 33 | Lepisosteus osseus | ≈1,170 | ≈1,170 | 84 | Micropterus punctulatus | ≈3,094 | – |
| 34 | Lythrurus umbratilis | ≈1,193 | – | 85 | Chrosomus erythrogaster | >3,094 | – |
| 35 | Rhinichthys cataractae | ≈1,343 | >3,535 | 86 | Pimephales notatus | >3,094 | – |
| 36 | Percina macrocephala | 1,351 | – | 87 | Rhinichthys obtusus | >3,094 | – |
| 37 | Ameiurus nebulosus | ≈1,358 | >4,000 | 88 | Ambloplites rupestris | >3,266 | >3,266 |
| 38 | Minytrema melanops | ≈1,372 | ≈1,372 | 89 | Etheostoma flabellare | >3,266 | – |
| 39 | Notemigonus crysoleucas | ≈1,400 | ≈1,400 | 90 | Lepomis cyanellus | >3,266 | – |
| 40 | Notropis hudsonius | ≈1,400 | ≈1,400 | 91 | Rhinichthys atratulus | ≈3,590 | – |
| 41 | Pomoxis nigromaculatus | >1,413 | >2,278 | 92 | Campostoma anomalum | >3,590 | >3,590 |
| 42 | Perca flavescens | >1,580 | >1,580 | 93 | Cyprinus carpio | >3,590 | >3,590 |
| 43 | Esox americanus | >1,625 | – | 94 | Hypentelium nigricans | >3,590 | >3,590 |
| 44 | Percina maculata | ≈1,643 | – | 95 | Ameiurus natalis | >4,000 | – |
| 45 | Carpiodes cyprinus | 1,672 | 1,672 | 96 | Cyprinella spiloptera | >4,000 | – |
| 46 | Ictiobus bubalus | 1,672 | 1,672 | 97 | Etheostoma blennioides | >4,000 | – |
| 47 | Moxostoma anisurum | >1,693 | – | 98 | Etheostoma caeruleum | >4,000 | – |
| 48 | Pimephales promelas | >1,732 | >3,094 | 99 | Luxilus chrysocephalus | >4,000 | – |
| 49 | Etheostoma spectabile | 1,824 | – | 100 | Notropis stramineus | >4,000 | – |
| 50 | Lepomis microlophus | >1,858 | – | 101 | Sander canadensis | >4,000 | >4,000 |
Hyphens indicates fish species where the genus XC95 is provided for a congeneric species above it in the table.
Only a genus XC95 was calculated for Erimystax spp. because none of the 4 species collected in the combined data set (E. cahni, E. insignis, E. x‐punctatus, or E. dissimilis) were observed in ≥25 samples, but together, they were observed in 38 samples. All the other information is for the 4 species combined.