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  • AsianClam
    do Disposal Fish ID Invertebrate ID Amphib Reptile ID Plant ID Reporting Form News Links Library Asian Clam Corbicula fluminea Introduction History etc Locations observed in SW Florida This site

    Original URL path: http://www.swfwc.org/ANS/Invertebrates/AsianClam.htm (2016-05-02)
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  • FalseDarkMussel
    do Disposal Fish ID Invertebrate ID Amphib Reptile ID Plant ID Reporting Form News Links Library False Dark Mussel Mytilopsis leucophaeata Introduction History etc Locations captured in SW Florida This

    Original URL path: http://www.swfwc.org/ANS/Invertebrates/FalseDarkMussel.htm (2016-05-02)
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  • Greater Selenium Threat
    has decimated the food web of the water column and thus shifted the community structure toward benthic organisms can in itself enhance adverse effects of selenium in the system by expanding the availability of a contaminated food supply The highest concentrations of selenium in P amurensis say the study s authors exceed values that other studies have shown reduce growth or cause reproductive damage when ingested in experiments by birds and fish Indeed they exceed values at which a high frequency of adverse effects is found by twofold Earlier studies showed selenium concentrations in the livers of surf scoters a species of diving duck seven to fourteen times higher than those from ducks at a reference site Similar high levels were found in other benthivores such as sturgeon and Dungeness crab predators that fed from the water column such as striped bass appeared to have lower concentrations than the benthivores The authors conclude that the invasion of the non native bivalve P amurensis has resulted in increased bioavailability of a potent environmental toxin to certain benthivores in San Francisco Bay Changes in contaminant cycling and potential effects are yet another reason to be concerned by the threat of invasive species in our estuarine ecosystems Source Linville R G et al 2002 Increased selenium threat as a result of invasion of the exotic bivalve Potomocorbula amurensis into the San Francisco Bay Delta Aquatic Toxicology 57 51 64 Contact Samuel N Luoma U S Geological Survey 345 Middlefield Rd Mail Stop 465 Menlo Park CA 94025 E mail snluoma usgs gov Accompanies Invasion Of Exotic Bivalve Species In San Francisco Bay Says Study Biological invasions of estuaries have become an increasing problem worldwide and are known to change community structure and function For example beginning in the mid 1980s an invading species of bivalve Potomocorbula amurensis became the predominant benthic macroinvertebrate in San Francisco Bay one consequence of which has been the essential elimination by this voracious feeder of the standing stock of phytoplankton from the water column of Suisun Bay in northern San Francisco Bay A paper in Aquatic Toxicology shows another apparent result of the invasion an increase in selenium concentrations in the biota of the bay Selenium is an environmental toxicant that has been responsible for adverse reproductive effects and local extinctions of fish and birds in wetlands receiving agricultural drainage and river ecosystems draining selenium rich agricultural lands Although it is nutritionally essential the window between essential concentrations in food and concentrations that can cause adverse effects is narrow Bivalves are frequently particularly prone to bioaccumulate selenium in their tissues It is possible that P amurensis may have a greater bioaccumulation ability than other bivalves because it is an unusually voracious filter feeder and utilizes a variety of food sources however say the study s authors direct comparison with other bivalve species in the Bay was difficult because P amurensis has essentially displaced them all However they note that whether or not it bioaccumulates selenium to a great

    Original URL path: http://www.swfwc.org/ANS/greater_selenium_threat.htm (2016-05-02)
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  • AlvaANS
    isolated pond he dug on his property about 2½ years ago Brookman stocked it with sunfish bass and gar But that s about it Brookman said What he found surprised him considering the pond was not connected to any other body of water even nearby Telegraph Creek or the Caloosahatchee River Brookman caught dozens of jewel cichlids I lost track after about 300 jewel cichlids Brookman said And there were black acaras Mayan cichlids and hoplo armored catfish We re figuring it s got to be sheetflow Brookman said Sheetflow is when rain water runs across broad swaths of land to the lowest point Brookman and the Southwest Florida Watershed Council co founded by his wife Susan Brookman have a 3 000 grant from the Charlotte Harbor National Estuary Program to get started The network certainly has a lot of work ahead of it Its coverage area stretches from southern Polk County through Collier County and will need more money and volunteers Brookman said Volunteers being the key there Brookman said Council co founder John Cassani is the program manager The two men still monitor Brookman s pond A January count saw only two jewels a bunch of mosquito fish and native bluegills But Cassani and Brookman are certain the jewels are in the 8 foot deep pond They ll just kind of chill out down there Brookman said Jewels hate the cold The colorful tropical fish is popular in aquariums as are a lot of non native species swimming around in local waters Many scientists and environmentalists blame aquarium owners who release unwanted pets into the wild That s where the education comes in The program encourages aquarium owners to either return unwanted fish snails or whatever to the pet store euthanize them or eat them but not release

    Original URL path: http://www.swfwc.org/ANS/alvaans.htm (2016-05-02)
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  • Testmap
    Home Map Impacts What you can do Disposal Fish ID Invertebrate ID Amphib Reptile ID Plant ID Reporting Form News Links Library This site was last updated on 11 05

    Original URL path: http://www.swfwc.org/ANS/testmap.htm (2016-05-02)
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  • TMDL Part4
    than 50 of the samples collected in any one quarter b the sample size must be a minimum of 30 samples and c the data must meet the requirements of paragraphs 62 303 320 4 6 and 7 b For waters listed due to failure to meet aquatic life use support based on biological data the water shall be delisted when the segment passes two independent follow up bioassessments and there have been no failed bioassessments for at least one year The follow up tests must meet the following requirements 1 For streams the new data may be two BioRecons or any combination of BioRecons and SCIs 2 The bioassessments must be conducted during similar conditions same seasons and general flow conditions under which the previous bioassessments used to determine impairment were collected 3 The data must meet the requirements of Section 62 303 330 1 and 2 F A C c For waters listed due to failure to meet aquatic life use support based on toxicity data the water shall be delisted when the segment passes two independent follow up toxicity tests and there have been no failed toxicity tests for at least one year The follow up tests must meet the following requirements 1 The tests must be conducted using the same test protocols and during similar conditions same seasons and general flow conditions under which the previous test used to determine impairment were collected 2 The data must meet the requirements of rules 62 303 340 1 and the time requirements of rules 62 303 340 2 or 3 d For waters listed due to fish consumption advisories the water shall be delisted following the lifting of the advisory or when data complying with rule 62 303 470 1 a and b demonstrate that the continuation of the advisory is no longer appropriate e For waters listed due to changes in shellfish bed management classification the water shall be delisted upon reclassification of the shellfish harvesting area to its original or higher harvesting classification Reclassification of a water from prohibited to unclassified does not constitute a higher classification f For waters listed due to bathing area closure or advisory data the water shall be delisted if the bathing area does not meet the listing thresholds in rule 62 303 360 1 for five consecutive years g For waters listed based on impacts to potable water supplies the water shall be delisted when applicable water quality criteria are met as defined in rule 62 303 380 1 a and when the causes resulting in higher treatment costs have been ameliorated h For waters listed based on exceedance of a human health based annual average criterion the water shall be delisted when the annual average concentration is less than the criterion for three consecutive years i For waters listed based on nutrient impairment the water shall be delisted if it does not meet the listing thresholds in rule 62 303 450 for three consecutive years j For any listed

    Original URL path: http://www.swfwc.org/tmdl_part4.htm (2016-05-02)
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  • blackacaraMaps
    you can do Disposal Fish ID Invertebrate ID Amphib Reptile ID Plant ID Reporting Form News Links Library Black Acara Cichlasoma bimaculatum Locations in SW Florida Click on the number to view specific siting data Lee County This site was

    Original URL path: http://www.swfwc.org/ANS/Fish/blackacaraMAP.htm (2016-05-02)
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  • Site03090205-1
    ID Reporting Form News Links Library Collection Site Information Location Upper Caloosahatchee River 03090205 1 Description of location floating mid river Time and method of collection midnight with gaff Who collected Sheriff A Griffin Who identified verified specimen Deputy Fife

    Original URL path: http://www.swfwc.org/ANS/site03090205-1.htm (2016-05-02)
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