DOCSLIB.ORG

Species Composition of Macroinvertebrates in Medium-Sized Lithuanian Rivers

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Species Composition of Macroinvertebrates in Medium-Sized Lithuanian Rivers 10 Acta Zoologica Lituanica, 2004, Volumen 14, Numerus 3 ISSN 1392-1657 SPECIES COMPOSITION OF MACROINVERTEBRATES IN MEDIUM-SIZED LITHUANIAN RIVERS Virginija PLIÛRAITË, Vytautas KESMINAS Institute of Ecology of Vilnius University, Akademijos 2, LT-08412 Vilnius-21, Lithuania. E-mail: [email protected], [email protected] Abstract. The article is devoted to the analysis of the taxonomic composition of macroinvertebrates in 17 medium-sized Lithuanian rivers with different kinds of substrata. One hundred and sixty taxa of invertebrates were identified in the course of the study. The obtained results proved that in the same river the number of taxa and Shannon-Weavers index of diversity are substratum type dependent. The greatest number of taxa was established in the stone substratum while the smallest was recorded in the sand one. The richest biodiversity and the highest Shannon-Weavers index in the stone substratum were recorded in the Jiesia River. Rivers with increased organic contamination were dominated by Trichoptera of the genus Hydropsyche. Key words: macroinvertebrate, species richness, medium-sized rivers INTRODUCTION (1959, 1960, 1962) conducted a comprehensive study of the species composition of stoneflies, caddisflies, may- In streams, species richness of macroinvertebrates is flies in the Perðokðna and Mera Rivers and that of may- affected by a large number of biological (Feminella & flies in the Verknë, Ûla-Pelesa Rivers. There were Resh 1990) and environmental factors (Voelz & seven species of caddisflies recorded in the Perðëkë McArthur 2000), such as environmental stability (Ward River by Spuris (1969). The occurrence of stonefly, cad- & Stanford 1979). Species richness of aquatic inverte- disfly, mayfly species in the Eþerëlë, Jiesia, Lakaja, Lû- brates is also strongly influenced by natural and/or an- ðis, Siesartis (Ðeðupë), Ðerkðnë Rivers was not reported. thropogenic disturbance (Rosenberg & Resh 1993), The aim of the current study has been to establish the which may lead to spatial discontinuities in predictable species composition and diversity of macroinvertebrates gradients (Ward & Stanford 1983) and losses of taxa in medium-sized Lithuanian rivers with different kinds (Brittain & Saltveit 1989). Resh and Jackson (1993) of substrata. noted that species richness is susceptible to the impact of human activities on stream ecosystems, particularly on aquatic insects of the orders Ephemeroptera, MATERIAL AND METHODS Trichoptera or Plecoptera, which are often good indica- tors of environmental conditions in streams. The investigations were performed in summer 1998 Aquatic insects such as Ephemeroptera, Plecoptera, 2002 in 17 medium-sized rivers: the Armona, Eþerëlë, Trichoptera, Coleoptera (EPTC) are known to be pollu- Jiesia, Lakaja, Lûðis, Mera, Perðëkë, Perðokðna, Siesar- tion-sensitive (Hynes 1957). Cayrou et al. (2000) tis (Ðeðupë), Spengla, Ðerkðnë, Ðirvinta, Verseka, showed the pertinence of EPTC species associations for Verknë, Vilnia, Virinta, Ûla-Pelesa. The presence of the stream classifications. Wallace et al. (1996) noticed that stone substratum, noted for higher species richness, was species richness of Ephemeroptera, Plecoptera, taken into consideration when selecting rivers for the Trichoptera actually responds to variations in water investigation. quality. Data on species richness of macrozoobenthos in me- Description of sites dium-sized Lithuanian rivers are not abundant. Kazlaus- kas (1959, 1960, 1962) investigated stoneflies (Plecop- There are about 29.9 thousand streams (longer than tera), caddisflies (Trichoptera) and mayflies (Ephe- 0.5 km) with the total length of 63,700 km in Lithuania. meroptera) in different types of (medium-sized among Small rivers up to 10 km long make up approximately them) Lithuanian rivers. In his study he described their 97.5% of the total number of rivers or 77% of the total species, indicating their sampling locations. Kazlauskas length of riverbeds. 758 rivers and canals are longer than 11 Species composition of macroinvertebrates in medium-sized rivers 10 km, 19 of them being longer than 100 km and nine The majority of the investigated rivers were clean or longer than 200 km (Kilkus 1998). The rivers investi- cleanish (IIII class). According to the quality class of gated were classified as medium-sized in accordance with contamination the most contaminated rivers were the the EC Water Framework Directive (2000/60/EC). Jiesia, Siesartis, Perðëkë (IVV class; Table 2). In the course of sampling the water level in the investi- gated rivers with the stone substratum was 2540 cm Sampling methods and statistical analysis and 6070 cm in those with the gravel, sand-silt and sand substrata. At the moment of sampling the water in Samples of macrozoobenthos were taken with a stove- the rivers was unturbid. The character of anthropogenic pipe sampler (cylindrical tube) from the gravel, sand- pollution was not studied in the course of sampling. silt and sand substrata (Gasiûnas 1956). On study sites According to the classification of water contamination with the substrata of sand and stones 210 cm in diam- used in Lithuania the rivers were divided into six classes eter samples were dredged up from three 0.1 m2 areas in accordance with Water quality monitoring progra- (stone substratum) by the method of kick-sampling mme; Table 1. (NBWE 1993). Samples were also collected from plants: Table 1. Classification of river contamination used in Lithuania. Low Medium Highly Very Very Clean contami- contami- contami- highly con- clean nated nated nated taminated Quality class I II III IV V VI BDS5, mgO2/l <2.0 2.03.5 3.65.0 5.18.0 8.118.0 >18 Inorganic nitrogen, mg N/1 <0.3 0.30.75 0.82.5 2.67.5 7.615.0 >15 Phosphates, mg P/1 <0.025 0.0250.050 0.0550.125 0.1300.250 0.3000.500 >0.500 Table 2. Parameters of the investigated rivers. Area of the Average Water tem- Current River Name of river basin long-term perature in Sampling Quality velocity basin the affluent in Lithuania annual the course of dates class m/s km² yield m³/s sampling °C Spengla 148.3 1.00 0.28 17.2 July 1999 I Merkys Verseka 384.4 2.70 0.55 19.4 June 1998 I Ûla-Pelesa 752.9 5.50 0.35 17.0 July 1999 I Armona 218.9 1.40 0.30 21.0 July 1999 II Ðventoji Ðirvinta 918.1 6.50 0.40 21.0 July 1999 III Virinta 566.3 4.40 0.45 14.0 June 1998 II Lakaja 432.1 2.51 0.31 20.1 July 1999 I Þeimena Mera 204.4 1.90 0.40 16.5 July 1999 II Perðokðna 105.3 0.70 0.30 18.9 July 1999 I Lûðis 113.6 1.03 0.50 12.5 August 2001 II Venta Ðerkðnë 285.2 1.90 0.30 15.8 August 2001 III Jiesia 473.7 3.00 0.30 17.0 July 2002 IV Nemunas Perðëkë 561.8 2.50 0.50 20.0 August 2001 V Verknë 727.5 5.70 0.50 16.8 June 1998 III Neris Vilnia 623.5 5.50 0.50 20.5 July 2002 II Ðeðupë Siesartis 197.6 1.00 0.40 19.0 August 2001 IVV Mûða Eþerëlë 156.2 0.74 0.30 16.0 August 1998 II In Table 2 the river basin area is presented in accordance with Gailiuðis et al. (2001) 12 Pliûraitë V., Kesminas V. benthic fauna having been collected, plants were is recommended by Bloom (1981), Faith et al. (1987) weighed (phytophilic species), the abundance of and Jackson (1993). When applied to binary data the zoobenthos being calculated ind/1 kg of plants and the Bray-Curtis index is exactly equivalent to Sørensens biomass g/1 kg of plants. The more common plant index (Sørensen 1948). These similarities were calcu- species from which samples of macroinvertebrate were lated using the Cluster Program of the Primer package. collected in the investigated rivers included Elodea canadensis, Ceratophyllum demersum, Potamogeton spp. In total there were 117 samples gathered and RESULTS analysed in the laboratory by conventional methods employed in hydrobiology. Species composition of macroinvertebrates in inves- The following indices were calculated: Shannon- tigated medium-sized rivers Weavers diversity index (Shannon & Weaver 1949) and Sørensens similarity index (Sørensen 1948). In the course of the investigation performed in 17 me- Oligochaeta and Simuliidae were identified only to the dium-sized rivers in different districts of Lithuania family level and therefore were excluded from statisti- 160 taxa of macrozoobenthic organisms were identi- cal analyses when calculating indices. Mean ±SE and fied: Hirudinea 4 (2.5% of the total number of taxa), Students t-test was used for estimates of macroin- Isopoda 1 (0.6%), Amphipoda 1 (0.6%), Epheme- vertebrate abundance in the stone substratum of rivers. roptera 20 (12.5%), Plecoptera 6 (3.7%), Odonata Correlations were calculated according Pearson 2 (1.2%), Heteroptera 4 (2.5%), Coleoptera larvae (StatSoft 2001). Similarities in the abundance of taxa 4 (2.5%), Coleoptera imago 6 (3.7%), Megaloptera between invertebrate samples collected from the stone 1 (0.6%), Trichoptera 31 (19.4%), Lepidoptera substratum and plants were calculated using the Bray- 1 (0.6%), other Diptera 10 (6.2%), Chironomidae Curtis similarity measure (Bray & Curtis 1957), which 44 (27.5%), Mollusca 25 (15.6%; Table 3). Table 3. List of taxa of benthic macroinvertebrates in rivers. Family/ Group Taxon Subfamily Mera Lûðis Jiesia Vilnia Lakaja Virinta Verknë Eþerëlë Perðëkë Ðerkðnë Verseka Spengla Ðirvinta Armona Siesartis Perðokðna Ûla-Pelesa 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Oligochaeta + + + + + + + + + + + + + + + + + Hirudinea Glossiphonidae Glossiphonia ++ ++++ complanata (Linnaeus) Helobdella stagnalis ++++ ++ (Linnaeus) Erpobdellidae Erpobdella octoculata +++ + + ++++++ (Linnaeus) Pisciolidae Piscicola geometra ++ (Linnaeus)
Load more

Recommended publications
  • The Freshwater Snails (Gastropoda) of Iran, with Descriptions of Two New Genera and Eight New Species
    A peer-reviewed open-access journal ZooKeys 219: The11–61 freshwater (2012) snails (Gastropoda) of Iran, with descriptions of two new genera... 11 doi: 10.3897/zookeys.219.3406 RESEARCH articLE www.zookeys.org Launched to accelerate biodiversity research The freshwater snails (Gastropoda) of Iran, with descriptions of two new genera and eight new species Peter Glöer1,†, Vladimir Pešić2,‡ 1 Biodiversity Research Laboratory, Schulstraße 3, D-25491 Hetlingen, Germany 2 Department of Biology, Faculty of Sciences, University of Montenegro, Cetinjski put b.b., 81000 Podgorica, Montenegro † urn:lsid:zoobank.org:author:8CB6BA7C-D04E-4586-BA1D-72FAFF54C4C9 ‡ urn:lsid:zoobank.org:author:719843C2-B25C-4F8B-A063-946F53CB6327 Corresponding author: Vladimir Pešić ([email protected]) Academic editor: Eike Neubert | Received 18 May 2012 | Accepted 24 August 2012 | Published 4 September 2012 urn:lsid:zoobank.org:pub:35A0EBEF-8157-40B5-BE49-9DBD7B273918 Citation: Glöer P, Pešić V (2012) The freshwater snails (Gastropoda) of Iran, with descriptions of two new genera and eight new species. ZooKeys 219: 11–61. doi: 10.3897/zookeys.219.3406 Abstract Using published records and original data from recent field work and revision of Iranian material of cer- tain species deposited in the collections of the Natural History Museum Basel, the Zoological Museum Berlin, and Natural History Museum Vienna, a checklist of the freshwater gastropod fauna of Iran was compiled. This checklist contains 73 species from 34 genera and 14 families of freshwater snails; 27 of these species (37%) are endemic to Iran. Two new genera, Kaskakia and Sarkhia, and eight species, i.e., Bithynia forcarti, B. starmuehlneri, B.
    [Show full text]
  • Field Host Range, Foraging Depth, and Impact Of
    FIELD HOST RANGE, FORAGING DEPTH, AND IMPACT OF CRICOTOPUS LEBETIS SUBLETTE (DIPTERA: CHIRONOMIDAE), A BIOLOGICAL CONTROL AGENT OF HYDRILLA VERTICILLATA (L.F.) ROYLE (HYDROCHARITACEAE) By EUTYCHUS MUKURE KARIUKI A DISSERTATION PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY UNIVERSITY OF FLORIDA 2017 © 2017 Eutychus Mukure Kariuki To my loving family ACKNOWLEDGMENTS I would like to thank my Major Advisor, Dr. Raymond L. Hix, and my Co-Advisor, Dr. James P. Cuda, for their support and guidance during my Ph.D. program. I am also thankful to my committee members, Dr. Stephen D. Hight for his invaluable support and mentorship during the course of my research; Dr. Jennifer Gillett-Kaufman for her constant support, especially through the writing process of my dissertation; and Dr. Lyn Gettys for always being available to help with questions. I am grateful to all others who provided their assistance, including Dr. Edzard van Santen (University of Florida), Dr. Lazarus Mramba (University of Florida), Dr. Emma Weeks (University of Florida), John Mass (United States Department of Agriculture (USDA), Tallahassee, Florida), Kelle Sullivan (Florida Fish and Wildlife Conservation Commission), Dr. Lamberth Kanga (Florida A&M University), and Dr. Muhammad Haseeb (Florida A&M University). I am thankful to all my colleagues and lab mates at the University of Florida who reviewed this manuscript and offered valuable comments and suggestions. I am equally thankful to the USDA for providing funding to this study through the Hydrilla Integrated Pest Management Risk Avoidance and Mitigation Project (IPM RAMP) grant 2010-02825 and the National Institute of Food and Agriculture Crop Protection and Pest Management (NIFA CPPM) grant 2014-70006-22517.
    [Show full text]
  • Table of Contents 2
    Southwest Association of Freshwater Invertebrate Taxonomists (SAFIT) List of Freshwater Macroinvertebrate Taxa from California and Adjacent States including Standard Taxonomic Effort Levels 1 March 2011 Austin Brady Richards and D. Christopher Rogers Table of Contents 2 1.0 Introduction 4 1.1 Acknowledgments 5 2.0 Standard Taxonomic Effort 5 2.1 Rules for Developing a Standard Taxonomic Effort Document 5 2.2 Changes from the Previous Version 6 2.3 The SAFIT Standard Taxonomic List 6 3.0 Methods and Materials 7 3.1 Habitat information 7 3.2 Geographic Scope 7 3.3 Abbreviations used in the STE List 8 3.4 Life Stage Terminology 8 4.0 Rare, Threatened and Endangered Species 8 5.0 Literature Cited 9 Appendix I. The SAFIT Standard Taxonomic Effort List 10 Phylum Silicea 11 Phylum Cnidaria 12 Phylum Platyhelminthes 14 Phylum Nemertea 15 Phylum Nemata 16 Phylum Nematomorpha 17 Phylum Entoprocta 18 Phylum Ectoprocta 19 Phylum Mollusca 20 Phylum Annelida 32 Class Hirudinea Class Branchiobdella Class Polychaeta Class Oligochaeta Phylum Arthropoda Subphylum Chelicerata, Subclass Acari 35 Subphylum Crustacea 47 Subphylum Hexapoda Class Collembola 69 Class Insecta Order Ephemeroptera 71 Order Odonata 95 Order Plecoptera 112 Order Hemiptera 126 Order Megaloptera 139 Order Neuroptera 141 Order Trichoptera 143 Order Lepidoptera 165 2 Order Coleoptera 167 Order Diptera 219 3 1.0 Introduction The Southwest Association of Freshwater Invertebrate Taxonomists (SAFIT) is charged through its charter to develop standardized levels for the taxonomic identification of aquatic macroinvertebrates in support of bioassessment. This document defines the standard levels of taxonomic effort (STE) for bioassessment data compatible with the Surface Water Ambient Monitoring Program (SWAMP) bioassessment protocols (Ode, 2007) or similar procedures.
    [Show full text]
  • CONTRIBUTIONS to a REVISED SPECIES CONSPECT of the EPHEMEROPTERA FAUNA from ROMANIA (Mayfliesyst)
    Studii şi Cercetări Mai 2014 Biologie 23/2 20-30 Universitatea”Vasile Alecsandri” din Bacău CONTRIBUTIONS TO A REVISED SPECIES CONSPECT OF THE EPHEMEROPTERA FAUNA FROM ROMANIA (mayfliesyst) Florian S. Prisecaru, Ionel Tabacaru, Maria Prisecaru, Ionuţ Stoica, Maria Călin Key words: Ephemeroptetera, systematic classification, new species, Romania. INTRODUCTION wrote the chapter Order Ephemeroptera (2007, pp.235-236) and mentioned 108 species in the list of In the volume „Lista faunistică a României Ephemeroptera from our country, indicating the (specii terestre şi de apă dulce) [List of Romanian authors of their citation. It is the first time since the fauna (terrestrial and freshwater species)], editor-in- publication of a fauna volume (Bogoescu, 1958) that chief Anna Oana Moldovan from "Emil Racovita" such a list has been made public. Here is this list Institute of Speleology, Cluj-Napoca, Milca Petrovici followed by our observations. 0rder EPHEMEROPTERA Superfamily BAETISCOIDEA Family PROSOPISTOMATIDAE Genus Species Author, year 1. Prosopistoma pennigerum Mueller, 1785 Superfamily BAETOIDEA Family AMETROPODIDAE 2. Ametropus fragilis Albarda, 1878 Family BAETIDAE 3. Acentrella hyaloptera Bogoescu, 1951 4. Acentrella inexpectata Tschenova, 1928 5. Acentrella sinaica Bogoescu, 1931 6. Baetis alpinus Pictet, 1843 7. Baetis buceratus Eaton, 1870 8. Baetis fuscatus Linnaeus, 1761 9. Baetis gracilis Bogoescu and Tabacaru, 1957 10. Baetis lutheri Eaton, 1885 11. Baetis melanonyx Bogoescu, 1933 12. Baetis muticus Bürmeister, 1839 13. Baetis niger Linnaeus, 1761 14. Baetis rhodani Pictet, 1843 15. Baetis scambus Eaton, 1870 16. Baetis tenax Eaton, 1870 17. Baetis tricolor Tschenova,1828 18. Baetis vernus Curtis, 1864 19. Centroptilum luteolum Müller, 1775 20. Cloeon dipterum Linné, 1761 21.
    [Show full text]
  • Desktop Biodiversity Report
    Desktop Biodiversity Report Land at Balcombe Parish ESD/14/747 Prepared for Katherine Daniel (Balcombe Parish Council) 13th February 2014 This report is not to be passed on to third parties without prior permission of the Sussex Biodiversity Record Centre. Please be aware that printing maps from this report requires an appropriate OS licence. Sussex Biodiversity Record Centre report regarding land at Balcombe Parish 13/02/2014 Prepared for Katherine Daniel Balcombe Parish Council ESD/14/74 The following information is included in this report: Maps Sussex Protected Species Register Sussex Bat Inventory Sussex Bird Inventory UK BAP Species Inventory Sussex Rare Species Inventory Sussex Invasive Alien Species Full Species List Environmental Survey Directory SNCI M12 - Sedgy & Scott's Gills; M22 - Balcombe Lake & associated woodlands; M35 - Balcombe Marsh; M39 - Balcombe Estate Rocks; M40 - Ardingly Reservior & Loder Valley Nature Reserve; M42 - Rowhill & Station Pastures. SSSI Worth Forest. Other Designations/Ownership Area of Outstanding Natural Beauty; Environmental Stewardship Agreement; Local Nature Reserve; National Trust Property. Habitats Ancient tree; Ancient woodland; Ghyll woodland; Lowland calcareous grassland; Lowland fen; Lowland heathland; Traditional orchard. Important information regarding this report It must not be assumed that this report contains the definitive species information for the site concerned. The species data held by the Sussex Biodiversity Record Centre (SxBRC) is collated from the biological recording community in Sussex. However, there are many areas of Sussex where the records held are limited, either spatially or taxonomically. A desktop biodiversity report from SxBRC will give the user a clear indication of what biological recording has taken place within the area of their enquiry.
    [Show full text]
  • DNA Barcoding
    Full-time PhD studies of Ecology and Environmental Protection Piotr Gadawski Species diversity and origin of non-biting midges (Chironomidae) from a geologically young lake PhD Thesis and its old spring system Performed in Department of Invertebrate Zoology and Hydrobiology in Institute of Ecology and Environmental Protection Różnorodność gatunkowa i pochodzenie fauny Supervisor: ochotkowatych (Chironomidae) z geologicznie Prof. dr hab. Michał Grabowski młodego jeziora i starego systemu źródlisk Auxiliary supervisor: Dr. Matteo Montagna, Assoc. Prof. Łódź, 2020 Łódź, 2020 Table of contents Acknowledgements ..........................................................................................................3 Summary ...........................................................................................................................4 General introduction .........................................................................................................6 Skadar Lake ...................................................................................................................7 Chironomidae ..............................................................................................................10 Species concept and integrative taxonomy .................................................................12 DNA barcoding ...........................................................................................................14 Chapter I. First insight into the diversity and ecology of non-biting midges (Diptera: Chironomidae)
    [Show full text]
  • (Insecta: Ephemeroptera) of Iraq
    Biodiversity Data Journal 9: e63830 doi: 10.3897/BDJ.9.e63830 Research Article Updated check-list of the mayflies (Insecta: Ephemeroptera) of Iraq Farhad A. Khudhur‡§, Pavel Sroka ‡ University of Sulaimani, Sulaymaniyah, Kurdistan Region, Iraq § Biology Centre of the Czech Academy of Sciences, Institute of Entomology, České Budějovice, Czech Republic Corresponding author: Farhad A. Khudhur ([email protected]) Academic editor: Ben Price Received: 01 Feb 2021 | Accepted: 16 Mar 2021 | Published: 25 Mar 2021 Citation: Khudhur FA, Sroka P (2021) Updated check-list of the mayflies (Insecta: Ephemeroptera) of Iraq. Biodiversity Data Journal 9: e63830. https://doi.org/10.3897/BDJ.9.e63830 Abstract Based on a recent field survey in Iraqi Kurdistan and a critical evaluation of previously published data, 37 mayfly species are listed as occurring in Iraq. We collected and identified nine species as new for the country and corrected some previously published records. For several species scarcely treated in the literature, we provide information allowing their identification in the larval stage to promote the acquisition of reliable faunistic data from Iraq in the future. Keywords aquatic biodiversity, mayflies, Ephemeroptera, Middle East, Iraq Introduction Faunistic studies of mayflies occurring in some parts of the Middle East are still sparse. Existing studies have mainly focused on the Arabian Peninsula (Thomas and Sartori 1989, Sartori and Gillies 1990, Sartori 1991Gattolliat and Sartori 2008), Levant (Demoulin 1973, Koch 1980, Koch 1981, Koch 1988, Thomas et al. 2007, Thomas et al. 1988, Thomas and Dia 1983, Thomas and Dia 1984, Thomas and Dia 1985, Thomas and Dia 1999, Thomas © Khudhur F, Sroka P.
    [Show full text]
  • The Role of Chironomidae in Separating Naturally Poor from Disturbed Communities
    From taxonomy to multiple-trait bioassessment: the role of Chironomidae in separating naturally poor from disturbed communities Da taxonomia à abordagem baseada nos multiatributos dos taxa: função dos Chironomidae na separação de comunidades naturalmente pobres das antropogenicamente perturbadas Sónia Raquel Quinás Serra Tese de doutoramento em Biociências, ramo de especialização Ecologia de Bacias Hidrográficas, orientada pela Doutora Maria João Feio, pelo Doutor Manuel Augusto Simões Graça e pelo Doutor Sylvain Dolédec e apresentada ao Departamento de Ciências da Vida da Faculdade de Ciências e Tecnologia da Universidade de Coimbra. Agosto de 2016 This thesis was made under the Agreement for joint supervision of doctoral studies leading to the award of a dual doctoral degree. This agreement was celebrated between partner institutions from two countries (Portugal and France) and the Ph.D. student. The two Universities involved were: And This thesis was supported by: Portuguese Foundation for Science and Technology (FCT), financing program: ‘Programa Operacional Potencial Humano/Fundo Social Europeu’ (POPH/FSE): through an individual scholarship for the PhD student with reference: SFRH/BD/80188/2011 And MARE-UC – Marine and Environmental Sciences Centre. University of Coimbra, Portugal: CNRS, UMR 5023 - LEHNA, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés, University Lyon1, France: Aos meus amados pais, sempre os melhores e mais dedicados amigos Table of contents: ABSTRACT .....................................................................................................................
    [Show full text]
  • Environmental Baseline Data
    Our Dry Weather Plan South East Water’s 2021 draft drought plan Appendix I: Environmental Baseline Data March 2021 South East Water Rocfort Road Snodland Kent ME6 5AH Drought Plan | March 2021 Contents This appendix contains the environmental baseline reports for the two river drought permit sites – the Rivers Ouse and Cuckmere, and also the Halling groundwater site. The detailed site surveys, location searches and search maps for these sites, and that form the baseline for the rest of the groundwater permit sites are contained within a separate folder of supporting documentation which is available on request from South East Water. 1. River Cuckmere Environmental Baseline 2020 2. Enhanced aquatic environmental baseline for the Grey Pit/Halling source 3. River Ouse Environmental Baseline 2020 2 River Cuckmere Drought Plan: Environmental Baseline Draft J00640/ Version 1.0 Client: South East Water January 2021 Copyright © 2021 Johns Associates Limited DOCUMENT CONTROL Report prepared for: South East Water Main contributors: Matt Johns BSc MSc CEnv MCIEEM FGS MIFM, Director Liz Johns BSc MSc CEnv MCIEEM MRSB, Director Jacob Scoble BSc GradCIWEM, Geospatial Analyst Reviewed by: Liz Johns BSc MSc CEnv MCIEEM MRSB, Director Issued by: Matt Johns BSc MSc CEnv MCIEEM FGS MIFM, Director Suites 1 & 2, The Old Brewery, Newtown, Bradford on Avon, Wiltshire, BA15 1NF T: 01225 723652 | E: [email protected] | W: www.johnsassociates.co.uk Copyright © 2021 Johns Associates Limited DOCUMENT REVISIONS Version Details Date 1.0 Draft baseline issued for client comment 25 January 2021 Third party disclaimer Any disclosure of this report to a third party is subject to this disclaimer.
    [Show full text]
  • Impacts of Pesticides on Freshwater Ecosystems Ralf B
    Ecological Impacts of Toxic Chemicals, 2011, 111-137 111 CHAPTER 6 Impacts of Pesticides on Freshwater Ecosystems Ralf B. Schäfer1,*, Paul J. van den Brink2,3 and Matthias Liess4 1RMIT University, Melbourne, Australia; 2Alterra - Wageningen University and Research Centre, Wageningen, The Netherlands; 3Department of Aquatic Ecology and Water Quality Management, Wageningen University, Wageningen, The Netherlands and 4UFZ – Helmholtz Centre for Environmental Research, Leipzig, Germany Abstract: Pesticides can enter surface waters via different routes, among which runoff driven by precipitation or irrigation is the most important in terms of peak concentrations. The exposure can cause direct effects on all levels of biological organisation, while the toxicant mode of action largely determines which group of organisms (primary producers, microorganisms, invertebrates or fish) is affected. Due to the interconnectedness of freshwater communities, direct effects can entail several indirect effects that are categorised and discussed. The duration of effects depends on the recovery potential of the affected organisms, which is determined by several key factors. Long-term effects of pesticides have been shown to occur in the field. However, the extent of the effects is currently uncertain, mainly because of a lack of large-scale data on pesticide peak concentrations. In the final section, we elucidate the different approaches to predict effects of pesticides on freshwater ecosystems. Various techniques and approaches from the individual level to the ecosystem level are available. When used complementary they allow for a relatively accurate prediction of effects on a broad scale, though the predictive strength is rather limited when it comes to the local scale. Further advances in the risk assessment of pesticides require the incorporation and extension of ecological knowledge.
    [Show full text]
  • National Park Service
    Communities in Freshwater Coastal Rock Pools of Lake Superior, with a Focus on Chironomidae (Diptera) A Dissertation SUBMITTED TO THE FACULTY OF UNIVERSITY OF MINNESOTA BY Alexander Taurus Egan IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Advisor: Leonard C. Ferrington, Jr. May 2014 © Alexander Taurus Egan 2014 Acknowledgements Projects of this size are rarely accomplished without the assistance and support of many people. Primarily, my advisor, Len Ferrington, has been a great source of guidance and enthusiasm. My committee, Jacques Finlay, Ralph Holzenthal, and Roger Moon, have raised the bar considerably by pushing, pulling and steering me toward being a better scientist. Friends and colleagues in the Chironomidae Research Group have made my graduate experience a time I will remember fondly, with Alyssa Anderson, Will Bouchard and Jessica Miller sharing in the successes, misfortunes, and minor but important goals that come with the territory. In particular, Petra Kranzfelder often filled the roles of peer advisor and sounding board for ideas both brilliant and ridiculous. The National Park service has been very generous in many ways, and specific thanks go to Brenda Moraska Lafrançois and Jay Glase, who provided early development and direction for this project. My colleagues Mark Edlund from the Science Museum of Minnesota and Toben Lafrançois from the Science Museum and Northland College have consistently offered excellent ecological advice on what the data mean, often acting as de facto advisors. Without support from Isle Royale National Park this project would not have been possible. In particular, the technical advice, equipment loans, and logistical assistance from Paul Brown, Rick Damstra, Joan Elias, and Mark Romanski were invaluable.
    [Show full text]
  • Glöer, P., Zettler, M.L. 2005
    Malak. Abh. 23: 3–26 3 Kommentierte Artenliste der Süßwassermollusken Deutschlands PETER GLÖER 1 & MICHAEL L. ZETTLER 2 1 Schulstrasse 3, D-25491 Hetlingen, Germany; [email protected] 2 Institut für Ostseeforschung Warnemünde, Seestr. 15, D-18119 Rostock, Germany; [email protected] Abstract. An annotated check-list of the freshwater molluscs of Germany. – By considering the international code of zoological nomenclature, a critical annotated check-list for the freshwater molluscs of Germany is introduced, considering the currently used check-lists of GLÖER & MEIER- BROOK (1998), FALKNER et al. (2001), GLÖER (2002) und GLÖER & MEIER-BROOK (2003). As a basis of this list we used the CLECOM list (FALKNER & al. 2001), and the 1st update of the CLECOM list (BANK et al. 2001). In total 66 taxa are discussed or annotated. Meanwhile 15 taxa where deleted, because we do not think that these are distinct species or subspecies. This concerns particularly the subspecies of the Unionidae, which are not to be determinated seriously without the knowledge of the sampling site. In 5 taxa we changed the names given in the CLECOM list by established names, these are: Bithynia transsilvanica = B. troschelii, Anisus septemgyratus = A. leucostoma, A. calculiformis = A. septemgyratus, Ferrissia clessiniana = F. wautieri, Mytilopsis leucophaeata = Congeria leucophaeata. Finally we gave two subspecies the rank of species: Pisidum ponderosum and Pisidium crassum. Kurzfassung. Unter Beachtung der internationalen Regeln für die zoologische Nomenklatur, wird auf der Basis der derzeit verwendeten systematischen Listen von GLÖER & MEIER-BROOK (1998), FALKNER et al. (2001), GLÖER (2002) und GLÖER & MEIER-BROOK (2003) eine kritische, kommentierte Artenliste für die Süßwassermollusken in Deutschland vorgestellt.
    [Show full text]