Freshwater Mussels (Unionidae) in the Paint Rock River (Jackson, Madison, and Marshall Counties), Alabama (original) (raw)
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Freshwater Mussels (Unionidae) in the Headwaters of Chipola River, Houston County, Alabama
Southeastern Naturalist, 2009
Big and Cowarts creeks lie in extreme southeastern Alabama and form the headwaters of Chipola River. Qualitative and quantitative sampling for freshwater mussels in these reaches during 2006 and 2007 revealed an intact fauna, relative to historical reports. A cumulative total of 17 species, including federally protected Elliptio chipolaensis (Chipola Slabshell), Lampsilis subangulata (Shinyrayed Pocketbook), Medionidus penicillatus (Gulf Moccasinshell), and Pleurobema pyriforme (Oval Pigtoe), was encountered. A total of 3382 mussels (density 5.84 per m 2) was estimated for one 65-m reach of Big Creek and 9627 mussels (density 8.09 per m 2) were estimated to occur in one 170-m reach of Cowarts Creek. Tributaries had depauperate faunas, apparently due to substrate instability.
A Qualitative Freshwater Mussel Survey of the South Fork Spring River, Missouri and Arkansas
A qualitative freshwater mussel survey was performed in the South Fork Spring River, Arkansas between May 13 and June 20, 2006 to assess community composition, density, and the presence of endangered mussel species (Family Unionidae). Twenty-one species from 460 individuals of mussels were collected using qualitative methods. Of those 21 species, 11 were ranked as S1, S2, or S3 using rankings established by the Arkansas Natural Heritage Commission Heritage Program. Three species, Amblema plicata (Say 1817), Lampsilis reeveiana (Call 1887), and Ptychobranchus occidentalis (Conrad 1836), comprised 48% of all mussels collected with 12%, 15%, and 21%, respectively. Mussel abundance within beds ranged between 2 to 33 individuals/site with an overall mean of 13 individuals/site. Selecting mussel beds for long-term monitoring in streams is necessary to assess population status and recruitment and to document success of future stream restoration projects.
An Analysis of Freshwater Mussels (Unionidae) Along Luxapalila Creek, Mississippi, 1999 Studies
2001
, a survey for freshwater mussels was conducted along Luxapalila Creek, Mississippi, between Steens, Mississippi, and Waterworks Road Bridge, River Mile 6.2. The purpose was to obtain information that could be used to assess the effectiveness of reasonable and prudent measures and their terms and conditions to reduce impacts to mussels caused by downstream channelization. In addition, results would be used to determine the likelihood of future losses, or incidental take, of federally listed species in the project area.
Survey for Freshwater Mussels (Unionidae) in the Lower Green and Barren Rivers, Kentucky, 1992
1993
In June and July 1992, personnel of the U.S. Army Engineer Waterways Experiment Station (WES) conducted a survey for freshwater mussels (Family: Unionidae) between River Mile (RM) 100 and 155 in the Green River and RM 0.0 and 9.0 in the Barren River, KY. Data will be used by the U.S. Army Engineer District, Louisville (CEORL), to assess the environmental effects of replacing Lock and Dam No. 3, located at Green RM 108.5. Divers were Messrs. Larry Neill, Robert Warden, Robert T. James, and Jeff Montgomery from the Tennessee Valley Authority. Assistance in the field was provided by Messrs. Eric Pearson and Chuck Boston, University of Louisville. Mr. Jim Baker, CEORL, assisted in the field, provided background information on the project, and reviewed an early draft of this report. Ms. Erica Hubertz, University of West Florida, measured and identified mussels in the laboratory. All figures except maps were prepared by Ms. Sarah Wilkerson, Environmental Laboratory (EL), WES. Ms. Deborah Shafer, EL, diving inspector, assisted in the laboratory and field.
Distribution and Population Structure of Freshwater Mussels (Unionidae) in Lake Chicot, Arkansas
A systematic survey of mussel concentrations (= beds) inLake Chicot was conducted during June 10-15, 1991. The lake was divided into 58 relatively equal-sized quadrats for qualitative survey by two, 2-man teams using Hookah dive systems. A qualitative survey revealed a single mussel bed encompassing an area approximately 12 km long and four m wide. For population analysis, the bed was sub-divided into five strata encompassing 9600 m 2 each. Twenty random, 4 x 1 m, quantitative samples were taken from each of the five strata. Four mussel taxa; Amblema plicata (threeridge), Quadrula quadrula (mapleleaf) Quadrula nodulata (wartyback), and Plectomerus dombeyanus (bankclimber), accounted for 99.6% of the specimens sampled. The total mussel population for the bed was estimated to be 59,304 + 8,392. Potential for commercial harvest of Lake Chicot mussel resources is minimal at this time due to small shell size and poor shell quality.
Transactions of the Illinois State Academy of Science. Illinois State Academy of Science
We characterized the unionid community and extent of zebra mussel infestation along a 21 km reach of the upper Mississippi River known as the Lost Mound Unit of the Upper Mississippi River National Wildlife and Fish Refuge, formerly the Savanna Army Depot. Unionids were present at 81% of the 79 sites sampled totaling 2,440 individuals of 26 species. Catch per unit effort (CPUE) averaged 119.7 ± 107.0 SD unionids/hour (range = 0 to 402.0). Unionids were relatively abundant (CPUE ≥100 unionids/hour) at 34.2% of the sample sites, and of these sites, 66.7% had ≥10 live species. Young were found for up to 77% of the species including the federally endangered Lampsilis higginsii. Relative abundance of L. higginsii ranged from 0.9 to 2.6% of the community at the four sites it was found alive, which is well within the criteria established for areas of essential habitat. Frequency of unionids infested by at least one zebra mussel (Dreissena polymorpha) was 9.1%, with an average of 0.4 ± 1.8 ...
JAWRA Journal of the American Water Resources Association, 2014
The Clinch River is located in northeastern Tennessee (TN) and southwestern Virginia (VA) of the United States, and contains a diverse mussel assemblage of 46 extant species, including 20 species listed as federally endangered. To facilitate quantitative monitoring of the fauna, quadrat data were collected from 2004 to 2009 at 18 sites in the river, including 12 sites in TN and 6 sites in VA. Thirty-eight mussel species were collected alive in total from quadrat samples taken annually at sites in the TN section of the river. Over the five-year study period, mussel density averaged 25.5 m À2 at all sites sampled in TN. In contrast, mussel density averaged only 3.1 m À2 at sites sampled in VA. The best historical site in VA was Pendleton Island in Scott County, where mussel density was estimated as high as 25 m À2 in 1979, comparable to current densities recorded in TN. Mussel densities are now <1 m À2 , indicating a collapse of the fauna. A severe reduction in mussel abundance has occurred in a 68-km section of the river from St. Paul, VA, downstream to approximately Clinchport, VA (river kilometers 411.5-343.3). While the environmental factors responsible for the faunal decline are largely unknown, they must have been severe and sustained to reduce such large populations to their current low levels. Long-term water and habitat quality monitoring is needed to determine whether environmental degradation is still occurring in the river.
1991
Pub'1c rl!'oort1nq ouroen tor tn11 collect:1on of 1nformat1on is ~t1matM to he-raqf' 1 l"loyr °"' rf'!.DOnw. 1nclud1ng the t1ml!' tor '""'@wing 1nitruct1ons. seucrung ex1st1n9 aata \Ourc!1. 9athH1nq •nd m11nta1n1nq thl!' data neieded. and comP'e11ng anc1 rh"1~1nq tne coHM1on ot 1nform1t1on. Send comments r~ard1n9 th11 burdl!'n @'Jt1m1tr or anv oth., 1soect of th11 c0Uect1on ot 1ntorm1t1on, 1n<lud1nq suggestions for rt!duc1ng tnis our~~n. to Wutunqton Headauart@" Serv1ceis. Otrfe'torate or 1nformat1on Ooerattons and R@'l)Orts. I 21S Jtttfenon
Freshwater Mussel (Bivalvia: Unionidae) Assemblages of the Lower Cache River, Arkansas
Southeastern Naturalist, 2005
Freshwater mussel beds of the lower 68 km of the Cache River, AR, were delineated and sampled using diving and stratified random sampling methodology to determine species richness, density, size structure, and population and community numerical standing crop (CNSC). A total of 38 mussel beds were delineated, including 14 major beds (Mbeds) and 24 minor beds (mbeds). Twenty six species were collected, four of which were previously unknown from the Cache River. Amblema plicata, Megalonaias nervosa, and Plectomerus dombeyanus were the most abundant. Estimates of CNSC ranged from 3705 ± 1908 to 122,115 ± 24,194 individuals in Mbeds with mean densities ranging from 6.2 to 44.1 mussels/m 2. Nine of 16 species with > 10 individuals had a unimodal size frequency distribution and the other seven had multi-modal distributions. This study found impressive mussel assemblages in the lower Cache River, previously thought to contain only refugial pockets of mussel assemblages. Further monitoring of some species is recommended based on lack of recruitment.