Transactions of the American Fisheries Society Journal Impact Factor & Information

Publisher: American Fisheries Society, Taylor & Francis

Journal description

The Society's highly regarded international journal of fisheries science has been published continuously since 1872. It features results of basic and applied research in genetics, physiology, biology, ecology, population dynamics, economics, health, culture, and other topics germane to marine and freshwater finfish and shellfish and their respective fisheries and environments. Available in print and electronic formats.

Current impact factor: 1.31

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 1.314
2012 Impact Factor 1.546
2011 Impact Factor 1.592
2010 Impact Factor 1.603
2009 Impact Factor 1.256
2008 Impact Factor 1.569
2007 Impact Factor 1.319
2006 Impact Factor 1.386
2005 Impact Factor 1.626
2004 Impact Factor 1.278
2003 Impact Factor 1.327
2002 Impact Factor 1.23
2001 Impact Factor 1
2000 Impact Factor 0.985
1999 Impact Factor 0.827
1998 Impact Factor 1.108
1997 Impact Factor 0.88
1996 Impact Factor 0.846
1995 Impact Factor 0.914
1994 Impact Factor 0.798
1993 Impact Factor 0.851
1992 Impact Factor 0.93

Impact factor over time

Impact factor

Additional details

5-year impact 1.87
Cited half-life 0.00
Immediacy index 0.31
Eigenfactor 0.01
Article influence 0.60
Website Transactions of the American Fisheries Society website
Other titles Transactions of the American Fisheries Society
ISSN 0002-8487
OCLC 6445080
Material type Conference publication, Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Taylor & Francis

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Some individual journals may have policies prohibiting pre-print archiving
    • On author's personal website or departmental website immediately
    • On institutional repository or subject-based repository after either 12 months embargo
    • Publisher's version/PDF cannot be used
    • On a non-profit server
    • Published source must be acknowledged
    • Must link to publisher version
    • Set statements to accompany deposits (see policy)
    • The publisher will deposit in on behalf of authors to a designated institutional repository including PubMed Central, where a deposit agreement exists with the repository
    • STM: Science, Technology and Medicine
    • Publisher last contacted on 25/03/2014
    • This policy is an exception to the default policies of 'Taylor & Francis'
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: To restore habitat for wild trout, Kleinschmidt Creek, a low-gradient, groundwater-dominated stream in the Blackfoot Basin, Montana, was reconstructed using natural channel design principles. Reconstruction increased stream sinuosity from a ratio of 1.1 to 1.6, decreased mean channel width from 14.5 to 2.8 m, and increased sediment transport capacity to reduce accumulations of fine instream sediment. To further improve trout habitat, coarse woody debris (CWD) was variably placed within the new channel and livestock were excluded to promote the vegetative recovery of the riparian area. To evaluate the response of wild trout (92% Brown Trout Salmo trutta) to channel restoration, the abundance (number of trout per linear meter) and biomass (g/linear m) of age 1+ trout were monitored for 15 years (1998–2012) in a reach with low density CWD (1.3 stems/100 m) and compared with regional (reference) trends. Posttreatment (2002–2012) trout numbers in the low-density CWD reach were also compared with those in a reach with high-density CWD (18.2 stems/100 m). Long-term trends for the reference reaches showed a significant negative trend in trout abundance and no significant trend for biomass. Long-term trends for the low-density CWD reach showed a significant positive trend in abundance, as well as a significant trend in biomass. Trout abundance and biomass increased over the posttreatment period in the low-density CWD reach. However, in the high density CWD reach, while posttreatment abundance increased significantly, there was no significant trend in biomass. These results demonstrated that channel restoration increased wild trout populations in a deep, narrow, vegetated stream and that instream wood provided primarily short-term benefits during the early phase of habitat recovery.Received November 26, 2013; accepted October 18, 2014
    Transactions of the American Fisheries Society 12/2015; 144(1). DOI:10.1080/00028487.2014.982261
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    ABSTRACT: Many fish species produce sounds that are associated with reproductive behavior, and hydrophone recordings can be used to document this behavior in soniferous fishes. We recorded the sounds produced by a fish community and determined general seasonal and spatial patterns of fish sound production in the May River, South Carolina, as a means to assess general temporal and spatial patterns of reproduction. Two-minute sound files, temperature, salinity, and depth were recorded at 27 stations at monthly intervals along the May River in Bluffton, South Carolina, from January 2012 to December 2012. We identified species-specific calls from Spotted Seatrout Cynoscion nebulosus, Oyster Toadfish Opsanus tau, Silver Perch Bairdiella chrysoura, Black Drum Pogonias cromis, and Red Drum Sciaenops ocellatus. General species-specific seasonal patterns were noted; some species produced sounds within a specific time period and temperature range. Seasonally, Silver Perch, Oyster Toadfish, and Black Drum began calling in early spring and ended in May. Sound production of Spotted Seatrout began in early spring (i.e., February) and ended in early fall (i.e., end of September). The majority of Red Drum sound production occurred in August and September. Individual species had temperature-specific ranges in which they produced sound: Silver Perch, Oyster Toadfish, and Black Drum between 21°C and 26°C; Spotted Seatrout between 22°C and 30°C; and Red Drum between 28°C and 26°C. Species-specific spatial patterns of sound production were also observed. Fish calling rarely occurred near the source of the May River. Spotted Seatrout calls were predominately recorded at stations that displayed deep-hole characteristics with fallen trees. Red Drum preferred deeper habitat (i.e., water depths greater than 2.7 m) at the mouth of the May River. Seasonal and spatial patterns of courtship sounds suggest that each species has specific environmental criteria that are preferred for reproduction.
    Transactions of the American Fisheries Society 06/2015; 144(4):705-716. DOI:10.1080/00028487.2015.1037014
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    ABSTRACT: River herring (Alewives Alosa pseudoharengus and Blueback Herring A. aestivalis [bluebacks]) are congeneric, anadromous clupeid fishes that hybridize in areas of sympatry. Peritoneal pigmentation is the most diagnostic characteristic used to distinguish the species, but pigmentation has not been examined in hybrids. We developed a molecular-based assay to distinguish purebred river herring species from F1 hybrids and compared the peritoneal pigmentation among captive-raised purebred and hybrid individuals. Both wild-caught Alewife and blueback females tank-spawned with conspecific and congeneric males, but Alewives required exogenous hormone administration. Larvae of both species and hybrids were raised for ∼290 d posthatch, and peritoneal pigmentation was quantified. A nuclear gene (rag2) restriction fragment length polymorphism assay was used for species and hybrid identification. The peritoneal pigmentation was significantly darker in hatchery-spawned bluebacks than in Alewives, and hybrids exhibited consistent, intermediate expression. Adult individuals collected from the wild, however, exhibited darker (Alewives) or more variable (bluebacks) peritoneal coloration than their respective, captive-reared juveniles. These results indicated that peritoneal pigmentation alone is insufficient for diagnostic river herring species identification and should be coupled with genetic assays.
    Transactions of the American Fisheries Society 06/2015; 144(4):717-723. DOI:10.1080/00028487.2015.1037017
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    ABSTRACT: The efficient allocation of restoration resources is critical for the effective conservation of species. Here, we developed an ecological niche model to predict the response of three imperiled desert fishes to potential restoration actions along the longitudinal gradient of a desert river. The San Rafael River, Utah, is home to a complex of three endemic fishes (Flannelmouth Sucker Catostomus latipinnis, Bluehead Sucker C. discobolus, and Roundtail Chub Gila robusta; referred to as the “three species”). Like many Colorado River basin tributaries, the river is overallocated for human use, has experienced extensive physical degradation, and is now home to several nonnative fish species. To determine the factors most limiting to the three species, we first fit random forest models to fish CPUE and habitat data. We next combined these models with a longitudinal habitat survey and modeled nonnative species abundance to predict the continuous distribution of the three species in the lower San Rafael River, under current conditions and following simulated restoration. Nonnative fishes were important negative predictors of Flannelmouth Sucker and Bluehead Sucker relative abundance, and broadscale habitat variables were important positive predictors for all of the three species. Each of the three species was predicted to experience a significant increase in abundance following simulated eradication of nonnative fishes. Responses to simulated reach-specific habitat restoration were dependent on the reach restored, demonstrating that the choice of restoration location is critical. Nonnative species removal and restoring degraded reaches near already suitable habitat were predicted to be the most beneficial to the three species. Ecological niche models developed at the river scale, and incorporating both physical and biotic predictor variables, can provide spatially explicit information that appropriately parallels the spatial distribution of the needs of endemic fishes and can facilitate effective management and conservation decisions.
    Transactions of the American Fisheries Society 06/2015; 144(4):667-681. DOI:10.1080/00028487.2015.1024333
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    ABSTRACT: Largemouth Bass Micropterus salmoides undergo a diet shift to fish prey during the juvenile stage, but mechanisms influencing piscivorous behavior are largely unknown. In laboratory experiments, we examined ontogenetic effects of predator and prey size on piscivory of juvenile Largemouth Bass. Prey size preferences were determined in aquaria experiments by introducing multiple size ranges of either Bluegill Lepomis macrochirus, Gizzard Shad Dorosoma cepedianum, or Fathead Minnow Pimephales promelas with a Largemouth Bass from one of three length-classes (30, 50, and 75 mm TL). For Gizzard Shad, Largemouth Bass most often selected larger sizes (33-65% of Largemouth Bass length) than in experiments with either Fathead Minnow or Bluegill (25-48%). Although an optimal foraging model (handling time/prey dry mass) predicted most prey sizes chosen, Largemouth Bass, with their large gape, chose slightly larger prey than predicted for all three prey species. Using optimal-sized prey, we further investigated differential prey vulnerability and development of foraging behavior of juvenile Largemouth Bass (30-75 mm) in experiments conducted in a 750-L tank. Prey increased schooling and distance maintained from predators as they grew, but all sizes of Largemouth Bass foraged similarly, suggesting differences in predation success were due to prey morphology and species-specific behavioral responses of prey. Results of our study can provide better predictions for prey consumption patterns of piscivorous juvenile Largemouth Bass in field settings.
    Transactions of the American Fisheries Society 06/2015; 144(4):682-692. DOI:10.1080/00028487.2015.1027002
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    ABSTRACT: The river systems inhabited by coastal populations of Largemouth Bass Micropterus salmoides in North Carolina and along the Atlantic and Gulf coast regions exhibit episodic (i.e., several times per year) fluctuations in environmental conditions (e.g., dissolved oxygen [DO]). Laboratory studies have documented the effects of low DO (hypoxia) on Largemouth Bass, yet few field studies have examined these effects in open systems. The objective of this study was to determine the effects of episodic hypoxia on Largemouth Bass distribution, survival, and feeding success in an open coastal system. We collected 45 Largemouth Bass from four tributaries of the Chowan River and tagged them with acoustic transmitters. Fish movements were monitored using active tracking and passive receivers, and these data were compared with DO levels recorded in the tributaries and main-stem Chowan River. We found that tagged Largemouth Bass exhibited avoidance behavior at DO concentrations below 1.8 mg/L, with some seeking higher DO in the main stem or near tributary mouths during hypoxic events in the tributaries. The natural mortality rate of Largemouth Bass was low compared with rates reported in other studies, indicating that Largemouth Bass in coastal systems are able to survive hypoxic events. Analysis of stomach contents collected during hypoxic and non-hypoxic periods indicated that Largemouth Bass had less food in their stomachs under hypoxic conditions; however, the CPUE (fish/h of pedal time) of potential prey fishes was not lower during hypoxic periods relative to non-hypoxic periods, and thus a change in foraging opportunities did not appear to drive Largemouth Bass movement.
    Transactions of the American Fisheries Society 05/2015; 144(4):655-666. DOI:10.1080/00028487.2015.1024801
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    ABSTRACT: Goldfish Carassius auratus have been established in myriad ecosystems outside of their native ranges, and part of their successful establishment in new ecosystems might be attributed to the shift in life history traits. To explore the role of phenotypic shifts in Goldfish invasions, we quantified and compared spawning times and growth rates in the early life history of nonnative Goldfish from Chabalang and Chongdui wetlands in the Yarlung Tsangpo River basin. Spawning of nonnative Goldfish began on March 20 and April 14 for the Chabalang and the Chongdui populations, respectively, and both were considerably earlier than native populations despite the cold environments in the Yarlung Tsangpo River basin. Growth rates for the Chabalang population were significantly higher than those for the Chongdui population during the first 14 d posthatch; however, growth rates for the Chongdui population became higher after the 37th day. Within the Chabalang population, Goldfish hatching later had faster growth rates than individuals hatching earlier. Consequently, it seems that shifts in the timing of spawning and growth rates play an important role in the invasion success of Goldfish in extremely cold climates.
    Transactions of the American Fisheries Society 04/2015; 144(3):602-609. DOI:10.1080/00028487.2014.996668
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    ABSTRACT: Physical habitat characteristics can affect the abundance and distribution of organisms, and are frequently used to predict the standing crop of stream fish for purposes of understanding their ecology and better direct management. However, the spatial scale of the investigation and the resolution of the data can affect the outcome of such analyses. In this study we coupled watershed-level characteristics with instream habitat variables to model the density of two age-classes of juvenile steelhead Oncorhynchus mykiss in a watershed in the Clearwater River basin, Idaho. Density varied considerably across time and space. Variance partitioning showed that 41-50% of the variances in density were due to unexplained differences between sampling occasions (residual variance), and the rest resulted from variation at the site and site-and-year levels, depending on the age-class. Instream habitat variables better explained the variation in density than did models that included watershed-level characteristics. The density of subyearling steelhead was best explained by stream discharge, with a negative relationship. The density of yearling steelhead was best explained by a negative relationship with average weekly temperature; however, this relationship was statistically indistinguishable from zero. Finally, total density (subyearlings and yearlings combined) was best explained by discharge and average daily temperature. We believe that our approach is useful for identifying the physical factors associated with the density of stream salmonids, but we stress that findings from correlative studies should be interpreted in concert with detailed knowledge about life history variation in the study system.
    Transactions of the American Fisheries Society 04/2015; 144(3):577-590. DOI:10.1080/00028487.2015.1022220
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    ABSTRACT: Little was known about the populations of Shortnose Sturgeon Acipenser brevirostrum and Atlantic Sturgeon A. oxyrinchus in the Kennebec, Androscoggin, and Sheepscot River estuaries (the Kennebec system) in Maine, prompting a series of field studies spanning the years 1977-2001. Although the impetus for these studies varied, common objectives were to estimate population abundances and locate habitat important to the conservation of both species. During 16 years of gill-net sampling, we caught 3,372 Shortnose Sturgeon and 403 Atlantic Sturgeon. On the basis of two mark-recapture studies, the adult Shortnose Sturgeon population in the Kennebec system was estimated to be 5,117 (95% confidence interval, 4,206-6,279) for the period 1977-1981 and 9,436 (7,542-11,888) for the period 1998-2000. Gill-net sampling led to the identification of two spawning areas in the Kennebec system. One was an approximately 0.7-km-long reach immediately downstream of Brunswick Dam in the Androscoggin estuary, and the other was an approximately 26-km-long reach immediately downstream of Edwards Dam in the upper Kennebec estuary. Shortnose Sturgeon were caught at both locations, while Atlantic Sturgeon were documented only in the upper Kennebec estuary. Acoustic telemetry was used to identify a wintering site in Merrymeeting Bay that was used by Shortnose Sturgeon.
    Transactions of the American Fisheries Society 04/2015; 144(3):591-601. DOI:10.1080/00028487.2015.1022221
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    ABSTRACT: Hatchery propagation of spring Chinook Salmon Oncorhynchus tshawytscha has been shown to increase the proportion of males maturing as minijacks (age 2) or microjacks (age 1) relative to those proportions in wild populations. However, little is known about the success of early maturing males when they spawn in the wild. A captive broodstock program for spring Chinook Salmon in the White River (a tributary of the Wenatchee River, Washington) has a high rate of early male maturity. We used genetic parentage analysis to evaluate the spawning success of anadromous males in comparison with inferred early maturing resident, hatchery-origin males that spawned naturally. Based on samples of juvenile offspring (n = 1,007-1,368 fish/year) and a nearly complete sample of the potential anadromous parents, we found that during 2006-2009, 26-45% of the progeny did not have a male parent in the anadromous sample. In contrast, 0-23% of the progeny did not have a female parent represented in the sample. Using grandparentage analysis, we eliminated wild resident fish as a likely source of the unsampled male parents; thus, we concluded that those male parents were most likely early maturing resident fish that had been released from the captive broodstock program. The inferred spawning success of the unsampled resident males was significantly lower than that of the anadromous males. The typical mating pattern was for an anadromous female to produce about two-thirds of her offspring with one or two anadromous males and the remaining one-third with as many as 12 or more apparently resident males. To our knowledge, this is the first study to present evidence of successful reproduction by early maturing resident, hatchery-origin Chinook Salmon in the wild. The conservation implications of this finding are complex and will depend upon the genetic basis of early maturity and its causes in hatchery settings.
    Transactions of the American Fisheries Society 04/2015; 144(3):539-548. DOI:10.1080/00028487.2015.1009561
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    ABSTRACT: This study investigated the effect of exhaustive exercise on the swimming performance of Siberian Sturgeon Acipenser baeri and on the time required for recovery. Critical swimming speed (Ucrit), maximum metabolic rate (MMR), speed coefficient (c), and excess postexercise oxygen consumption (EPOC) were measured on three groups of juvenile sturgeon by stepped velocity tests at 20°C in a fish respirometer. After a recovery period of 1 h (group 1), 1 d (group 2), or 1 week (group 3), the four parameters were determined a second time and the results compared. The Ucrit of the sturgeon was 3.26 ± 0.11 body lengths per second (mean ± SE). After a 1 h recovery period, Ucrit was 78% of its initial value and complete recovery required slightly more than 1 d. Recovery of MMR followed the same pattern. The speed exponent (c) was approximately 1.0, indicating that the Siberian Sturgeon is an efficient swimmer; swimming efficiency decreased after exhaustive exercise and the effect appeared to last for at least 1 week. Exhaustive exercise strongly hindered anaerobic swimming in Siberian Sturgeon for more than an hour.
    Transactions of the American Fisheries Society 04/2015; 144(3):532-538. DOI:10.1080/00028487.2015.1007163
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    ABSTRACT: Habitat fragmentation, which affects many native salmonid species, is one of the major factors contributing to the declines in distribution and abundance of Bull Trout Salvelinus confluentus. Increasingly, managers are considering options to maintain and enhance the persistence of isolated local populations through active management strategies. Understanding the ecological consequences of such actions is a necessary step in conservation planning. We used an individual-based model to evaluate the consequences of an ongoing management program aimed at mitigating the anthropogenic fragmentation of the lower Clark Fork River in Montana. Under this program juvenile Bull Trout are trapped and transported from small, headwater source populations to Lake Pend Oreille, Idaho, for rearing, and adults are subsequently recaptured in their upstream migration and returned to the natal population for spawning. We examined one of these populations and integrated empirical estimates of demographic parameters to simulate different management scenarios where moderate (n = 4) and high (n = 8) numbers of age-2, age-3, or age-4 Bull Trout were removed for transport with variable return rates under both demographic stochasticity and environmental perturbations. Our results indicated the risks from removal with no returns increased substantially when removal totals and age of Bull Trout removed from the simulated population increased. Specifically, removing eight age-3 or age-4 individuals resulted in 26% and 62% reductions in average adult population size, respectively, across simulations. We found the risks of transport were not likely alleviated with low (3%) or moderate (6%) return rates, and there were considerable risks of declines for the source population even when return rates were extremely high (>12%). Our simulations indicated little risk of declines for the source population with removals of age-2 Bull Trout, and any risks were alleviated with low return rates. However, we found higher return rates were particularly beneficial in the presence of large, density-independent perturbations.
    Transactions of the American Fisheries Society 04/2015; 144(3):515-531. DOI:10.1080/00028487.2015.1007162
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    ABSTRACT: Sedgeunkedunk Stream, a third-order tributary to the Penobscot River in Maine, historically has supported several anadromous fishes including Atlantic Salmon Salmo salar, Alewife Alosa pseudoharengus, and Sea Lamprey Petromyzon marinus. Two small dams constructed in the 1800s reduced or eliminated spawning runs entirely. In 2009, efforts to restore marine-freshwater connectivity in the system culminated in removal of the lowermost dam (Mill Dam) providing access to 4.7 km of lotic habitat and unimpeded passage into the lentic habitat of Fields Pond. In anticipation of these barrier removals, we initiated a modified before-after-control-impact study, and monitored stream fish assemblages in fixed treatment and reference sites. Electrofishing surveys were conducted twice yearly since 2007. Results indicated that density, biomass, and diversity of the fish assemblage increased at all treatment sites upstream of the 2009 dam removal. No distinct changes in these metrics occurred at reference sites. We documented recolonization and successful reproduction of Atlantic Salmon, Alewife, and Sea Lamprey in previously inaccessible upstream reaches. These results clearly demonstrate that dam removal has enhanced the fish assemblage by providing an undisrupted stream gradient linking a small headwater lake and tributary with a large coastal river, its estuary, and the Atlantic Ocean.
    Transactions of the American Fisheries Society 04/2015; 144(3):467-479. DOI:10.1080/00028487.2015.1007164