DOCSLIB.ORG

Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm Engineering Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2004 v 'TW- ELsam Engineering Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2004 Published: 2. May 2005 Prepared: Simon B. Leonhard Editing: Gitte Spanggaard John Pedersen Checked: Bjame Moeslund Artwork: Kirsten Nygaard Approved: Simon B. Leonhard Cover photos: Jens Christensen Simon B. Leonhard Photos: Jens Christensen Maks Klaustmp Simon B. Leonhard English review: Matthew Cochran © No part of this publication may be reproduced by any means without clear reference to the source. Homs Rev. Hard Bottom Substrate Monitoring Page 3 Annual Status Report 2004 TABLE OF CONTENTS PAGE Summary.................................................................................................................................... 4 Sammenfatning (in Danish) ....................................................................................................... 7 1. Introduction ......................................................................................................................... 10 2. Methodology....................................................................................................................... 11 2.1. The research area...........................................................................................................11 2.2. Field activities................................................................................................................13 2.3. Test fishing................................................................................................................... 14 2.4. Laboratory activities.................................................................................................... 15 2.5. Statistical analyses.........................................................................................................15 2.5.1. Species composition.............................................................................................. 15 3. Results ...................................................................................................................................17 3.1. Fish observed .................................................................................................................17 3.2. Additional field observations .........................................................................................18 3.3. Vegetation......................................................................................................................18 3.4. Fauna ............................................................................................................................. 20 3.4.1. Mono-piles ............................................................................................................. 24 3.4.2. Scour protection ..................................................................................................... 31 3.5. Comparisons with results from 2003............................................................................ 36 3.5.1. Fish......................................................................................................................... 36 3.5.2. Vegetation.............................................................................................................. 37 3.5.3. Fauna ...................................................................................................................... 39 4. Discussion ............................................................................................................................ 45 5. Conclusion ........................................................................................................................... 50 6. References ............................................................................................................................ 52 Appendixes .............................................................................................................................. 55 Appendix 1. List of Positions ............................................................................................... 55 Appendix 2. Meteorological and Hydrographical Data....................................................... 56 Appendix 3. Species List..................................................................................................... 57 Appendix 3.1. Algae........................................................................................................ 57 Appendix 3.2. Fish........................................................................................................... 57 Appendix 3.3. Benthos ..................................................................................................... 58 Appendix 4. Sampling records. Fish species observed .........................................................60 Appendix 5. Transect description ........................................................................................ 62 Appendix 5.1. Transect description. Scour protection ..................................................... 62 Appendix 5.2. Transect description. Mono-piles ............................................................. 64 Appendix 6. Benthic Fauna abundance................................................................................ 66 Appendix 6.1. Total abundance........................................................................................ 66 Appendix 6.2. Mean abundance mono-piles.................................................................... 68 Appendix 6.3. Mean abundance scour protection ............................................................ 71 Appendix 7. Biomass........................................................................................................... 73 Appendix 7.1. Total biomass........................................................................................... 73 Appendix 7.2. Mean biomass. Mono-piles ...................................................................... 75 Appendix 7.3. Mean biomass. Scour protections ............................................................ 78 Doc. No. 2438-03-005 rev. 3 Homs Rev. Hard Bottom Substrate Monitoring Page 4 Annual Status Report 2004 Summary As part of the monitoring programme concerning the ecological impact from the introduction of hard substrate related to the Horns Rev Wind Farm, the second survey on the fouling communities since the erection of the wind farm in 2002 was performed in March and Sep­ tember 2004. The survey is a continuation of the survey performed in 2003. Horns Rev is situated 14-20 km off Blavands Huk, Denmark ’s most western point. Horns Rev was formed by a huge accumulation of Holocene marine sand deposits up to 20 m in depth. The water depth in the wind farm area varies from 6-14 m. The first of a total of 80 wind tur ­ bine foundations was in place in March 2003 and the last of the foundations was in place in August 2003. Methodology The wind turbine (WTG) foundations are constructed using the “mono-pile ” concept. At the seabed, a "gravel mattress" or scour protection is arranged around the foundation to minimise erosion. The diameter of the mono-pile foundation of the turbines is 4 m. The scour protection with a diameter of approximately 27 m in total consists of a protective stone mattress of stones up to 55 cm in diameter and a subjacent layer of smaller stones 3-20 cm in diameter. Surveys were performed at six turbine sites concerning the horizontal distribution of epifoul- ing assemblages on scour protections whereas the vertical distribution of epifouling assem­ blages was only performed at tree mono-piles. Epifouling communities exposed to different current regimes were studied both on the mono-piles as well as on the scour protection. Sampling was performed by SCUBA diving. Quantitative samples were collected from stone blocks and mono-piles while semi-quantitative (not precisely counted records) observations on flora- and fauna fouling communities were made according to a modified Braun-Blanquet scale along transects on both the scour protections and the mono-piles. Fish species were ob­ served and in addition standard gill nets were used for specific test fishing. For documenta­ tion, under water video recordings were made. In March, samples were taken on populations of the “giant” midge Telmatogeton japonicus inhabiting the splash/wash zone at the mono-piles. Recent observations on Telmatogeton japonicus, recorded for the first time in Denmark at Horns Rev in 2003, have revealed that this species is common and widely distributed on strongly exposed coasts in Denmark. It is especially common on large boulders in breakwaters and seawalls. Results flora A total of 11 taxa of seaweeds were registered on the mono-piles and scour protections showing a distinct variation in spatial and temporal distribution. The vegetation was more fre­ quently found on the mono-piles compared to the scour protections. Only a few species were found on stones at the scour protections and almost exclusively at turbine sites in the shallow­ est areas. Typical vertical zonations were found on the mono-piles with the species of Ulva (Enteromorpha) being the most frequent. Considerable changes in the vegetation community especially in the splash zone and at the upper part of the mono-piles between 2003 and 2004 were observed which might be a result of natural succession. The vegetation cover of fila­ mentous algae was more
Load more

Recommended publications
  • 1 Genetic Diversity in Two Introduced Biofouling Amphipods
    1 Genetic diversity in two introduced biofouling amphipods (Ampithoe valida & Jassa 2 marmorata) along the Pacific North American coast: investigation into molecular 3 identification and cryptic diversity 4 5 Erik M. Pilgrim and John A. Darling 6 US Environmental Protection Agency 7 Ecological Exposure Research Division 8 26 W. Martin Luther King Drive, Cincinnati, OH 45268, USA. 9 10 Running Title: Genetic diversity of introduced Ampithoe and Jassa 11 12 Article Type: Biodiversity Research 13 14 ABSTRACT 15 Aim We investigated patterns of genetic diversity among invasive populations of A. valida and J. 16 marmorata from the Pacific North American coast to assess the accuracy of morphological 17 identification and determine whether or not cryptic diversity and multiple introductions 18 contribute to the contemporary distribution of these species in the region. 19 Location Native range: Atlantic North American coast; Invaded range: Pacific North American 20 coast. 21 Methods We assessed indices of genetic diversity based on DNA sequence data from the 22 mitochondrial cytochrome c oxidase subunit I (COI) gene, determined the distribution of COI 23 haplotypes among populations in both the invasive and putative native ranges of A. valida and J. 24 marmorata, and reconstructed phylogenetic relationships among COI haplotypes using both 25 maximum parsimony and Bayesian approaches. 26 Results Phylogenetic inference indicates that inaccurate species level identifications by 27 morphological criteria are common among Jassa specimens. In addition, our data reveal the 28 presence of three well supported but previously unrecognized clades of A. valida among 29 specimens in the northeastern Pacific. Different species of Jassa and different genetic lineages of 1 30 Ampithoe exhibit striking disparity in geographic distribution across the region as well as 31 substantial differences in genetic diversity indices.
    [Show full text]
  • Additions to and Revisions of the Amphipod (Crustacea: Amphipoda) Fauna of South Africa, with a List of Currently Known Species from the Region
    Additions to and revisions of the amphipod (Crustacea: Amphipoda) fauna of South Africa, with a list of currently known species from the region Rebecca Milne Department of Biological Sciences & Marine Research Institute, University of CapeTown, Rondebosch, 7700 South Africa & Charles L. Griffiths* Department of Biological Sciences & Marine Research Institute, University of CapeTown, Rondebosch, 7700 South Africa E-mail: [email protected] (with 13 figures) Received 25 June 2013. Accepted 23 August 2013 Three species of marine Amphipoda, Peramphithoe africana, Varohios serratus and Ceradocus isimangaliso, are described as new to science and an additional 13 species are recorded from South Africa for the first time. Twelve of these new records originate from collecting expeditions to Sodwana Bay in northern KwaZulu-Natal, while one is an introduced species newly recorded from Simon’s Town Harbour. In addition, we collate all additions and revisions to the regional amphipod fauna that have taken place since the last major monographs of each group and produce a comprehensive, updated faunal list for the region. A total of 483 amphipod species are currently recognized from continental South Africa and its Exclusive Economic Zone . Of these, 35 are restricted to freshwater habitats, seven are terrestrial forms, and the remainder either marine or estuarine. The fauna includes 117 members of the suborder Corophiidea, 260 of the suborder Gammaridea, 105 of the suborder Hyperiidea and a single described representative of the suborder Ingolfiellidea.
    [Show full text]
  • Amphipod Newsletter 39 (2015)
    AMPHIPOD NEWSLETTER 39 2015 Interviews BIBLIOGRAPHY THIS NEWSLETTER PAGE 19 FEATURES INTERVIEWS WITH ALICJA KONOPACKA AND KRZYSZTOF JAŻDŻEWSKI PAGE 2 MICHEL LEDOYER WORLD AMPHIPODA IN MEMORIAM DATABASE PAGE 14 PAGE 17 AMPHIPOD NEWSLETTER 39 Dear Amphipodologists, Statistics from We are delighted to present to you Amphipod Newsletter 39! this Newsletter This issue includes interviews with two members of our amphipod family – Alicja Konopacka and Krzysztof Jazdzewski. Both tell an amazing story of their lives and work 2 new subfamilies as amphipodologists. Sadly we lost a member of our amphipod 21 new genera family – Michel Ledoyer. Denise Bellan-Santini provides us with a fitting memorial to his life and career. Shortly many 145 new species members of the amphipod family will gather for the 16th ICA in 5 new subspecies Aveiro, Portugal. And plans are well underway for the 17th ICA in Turkey (see page 64 for more information). And, as always, we provide you with a Bibliography and index of amphipod publications that includes citations of 376 papers that were published in 2013-2015 (or after the publication of Amphipod Newsletter 38). Again, what an amazing amount of research that has been done by you! Please continue to notify us when your papers are published. We hope you enjoy your Amphipod Newsletter! Best wishes from your AN Editors, Wim, Adam, Miranda and Anne Helene !1 AMPHIPOD NEWSLETTER 39 2015 Interview with two prominent members of the “Polish group”. The group of amphipod workers in Poland has always been a visible and valued part of the amphipod society. They have organised two of the Amphipod Colloquia and have steadily provided important results in the world of amphipod science.
    [Show full text]
  • 1 Amphipoda of the Northeast Pacific (Equator to Aleutians, Intertidal to Abyss): IX. Photoidea
    Amphipoda of the Northeast Pacific (Equator to Aleutians, intertidal to abyss): IX. Photoidea - a review Donald B. Cadien, LACSD 22 July 2004 (revised 21 May 2015) Preface The purpose of this review is to bring together information on all of the species reported to occur in the NEP fauna. It is not a straight path to the identification of your unknown animal. It is a resource guide to assist you in making the required identification in full knowledge of what the possibilities are. Never forget that there are other, as yet unreported species from the coverage area; some described, some new to science. The natural world is wonderfully diverse, and we have just scratched its surface. Introduction to the Photoidea Over more than a century the position of the photids has been in dispute. Their separation was recommended by Boeck (1871), a position maintained by Stebbing (1906). Others have relegated the photids to the synonymy of the isaeids, and taxa considered here as photids have been listed as members of the Family Isaeidae in most west coast literature (i.e. J. L. Barnard 1969a, Conlan 1983). J. L. Barnard further combined both families, along with the Aoridae, into an expanded Corophiidae. The cladistic examination of the corophioid amphipods by Myers and Lowry (2003) offered support to the separation of the photids from the isaeids, although the composition of the photids was not the same as viewed by Stebbing or other earlier authors. The cladistic analysis indicated the Isaeidae were a very small clade separated at superfamily level from the photids, the neomegamphopids, and the caprellids within the infraorder Caprellida.
    [Show full text]
  • Bering Sea Marine Invasive Species Assessment Alaska Center for Conservation Science
    Bering Sea Marine Invasive Species Assessment Alaska Center for Conservation Science Scientific Name: Jassa marmorata Phylum Arthropoda Common Name a tube-building amphipod Class Malacostraca Order Amphipoda Family Ischyroceridae Z:\GAP\NPRB Marine Invasives\NPRB_DB\SppMaps\JASMAR.pn g 24 Final Rank 57.18 Data Deficiency: 11.25 Category Scores and Data Deficiencies Total Data Deficient Category Score Possible Points Distribution and Habitat: 25 26 3.75 Anthropogenic Influence: 6.75 10 0 Biological Characteristics: 16 25 5.00 Impacts: 3 28 2.50 Figure 1. Occurrence records for non-native species, and their geographic proximity to the Bering Sea. Ecoregions are based on the classification system by Spalding et al. (2007). Totals: 50.75 88.75 11.25 Occurrence record data source(s): NEMESIS and NAS databases. General Biological Information Tolerances and Thresholds Minimum Temperature (°C) -2 Minimum Salinity (ppt) 12 Maximum Temperature (°C) 27 Maximum Salinity (ppt) 38 Minimum Reproductive Temperature (°C) NA Minimum Reproductive Salinity (ppt) 31* Maximum Reproductive Temperature (°C) NA Maximum Reproductive Salinity (ppt) 35* Additional Notes J. marmot is a tube-building amphipod, greyish in color with red-brown markings. Its maximum length is 10 mm and there are two distinct morphs of males with two different mating strategies. The 'major' morphs are fighter males, while the 'minor' morphs are sneaker males. This species is difficult to identify in the field, and easily confused with other Jassa species. There is some uncertainty around its native distribution due to the difficulty of distinguishing between J. marmorata and similar species, but it is likely native to the northwest Atlantic.
    [Show full text]
  • Final Supplemental Environmental Impact Statement Maury Island Aquatic Reserve
    Final Supplemental Environmental Impact Statement Maury Island Aquatic Reserve Lead Agency: Washington State Department of Natural Resources Aquatic Resources Program October 29, 2004 Final Supplemental Environmental Impact Statement – Proposed Maury Island Aquatic Reserve Fact sheet – Project Title: Maury Island Aquatic Reserve Final Supplemental Environmental Impact Statement (SEIS) for the Department of Natural Resources Aquatic Reserves Program Project Description: The purpose of this action is to adopt and implement appropriate management strategies for state-owned aquatic lands at the Maury Island site, which includes Quartermaster Harbor and the eastern shoreline of Maury Island. Maury Island is in King County, Township 21 North, Range 02 East and 03 East, and Township 22 North, Range 02 East and 03 East. This non-project Final Supplemental Environmental Impact Statement provides an opportunity for the public and private sector, affected tribes, and agencies with jurisdiction, expertise, and interest to review and comment on the proposed action by the Washington State Department of Natural Resources (DNR) to implement appropriate management strategies for the Maury Island site. This document analyzes reasonable alternatives, the probable significant adverse and beneficial environmental impacts of the alternatives, and their relation to existing policies, rules, and regulations. The Aquatic Reserves Program Guidance Final Programmatic Environmental Impact Statement (FEIS) was issued on September 6, 2002 to define criteria for establishing an aquatic reserve. The Maury Island Aquatic Reserve SEIS implements the guidance. Copies of the programmatic FEIS are available for review through either the SEPA Center or the Aquatic Resources Division, Washington Department of Natural Resources, 1111 St. SE, Olympia, Washington, or the State Library.
    [Show full text]
  • Amphipoda Key to Amphipoda Gammaridea
    GRBQ188-2777G-CH27[411-693].qxd 5/3/07 05:38 PM Page 545 Techbooks (PPG Quark) Dojiri, M., and J. Sieg, 1997. The Tanaidacea, pp. 181–278. In: J. A. Blake stranded medusae or salps. The Gammaridea (scuds, land- and P. H. Scott, Taxonomic atlas of the benthic fauna of the Santa hoppers, and beachhoppers) (plate 254E) are the most abun- Maria Basin and western Santa Barbara Channel. 11. The Crustacea. dant and familiar amphipods. They occur in pelagic and Part 2 The Isopoda, Cumacea and Tanaidacea. Santa Barbara Museum of Natural History, Santa Barbara, California. benthic habitats of fresh, brackish, and marine waters, the Hatch, M. H. 1947. The Chelifera and Isopoda of Washington and supralittoral fringe of the seashore, and in a few damp terres- adjacent regions. Univ. Wash. Publ. Biol. 10: 155–274. trial habitats and are difficult to overlook. The wormlike, 2- Holdich, D. M., and J. A. Jones. 1983. Tanaids: keys and notes for the mm-long interstitial Ingofiellidea (plate 254D) has not been identification of the species. New York: Cambridge University Press. reported from the eastern Pacific, but they may slip through Howard, A. D. 1952. Molluscan shells occupied by tanaids. Nautilus 65: 74–75. standard sieves and their interstitial habitats are poorly sam- Lang, K. 1950. The genus Pancolus Richardson and some remarks on pled. Paratanais euelpis Barnard (Tanaidacea). Arkiv. for Zool. 1: 357–360. Lang, K. 1956. Neotanaidae nov. fam., with some remarks on the phy- logeny of the Tanaidacea. Arkiv. for Zool. 9: 469–475. Key to Amphipoda Lang, K.
    [Show full text]
  • First Records of Aoroides Longimerus Ren and Zheng, 1996, and A
    BioInvasions Records (2020) Volume 9, Issue 4: 753–762 CORRECTED PROOF Rapid Communication First records of Aoroides longimerus Ren and Zheng, 1996, and A. semicurvatus Ariyama, 2004 (Crustacea, Amphipoda), in the English Channel, France Jean-Claude Dauvin*, Jean-Philippe Pezy and Aurore Raoux Normandie Univ, UNICAEN, UNIROUEN, Laboratoire Morphodynamique Continentale et Côtière, CNRS UMR 6143 M2C, 24 rue des Tilleuls, 14000 Caen, France *Corresponding author E-mail: [email protected] Citation: Dauvin J-C, Pezy J-P, Raoux A (2020) First records of Aoroides Abstract longimerus Ren and Zheng, 1996, and A. semicurvatus Ariyama, 2004 (Crustacea, Two Pacific amphipod species, Aoroides longimerus (94 individuals) and Amphipoda), in the English Channel, A. semicurvatus (three individuals), were recorded for the first time in 2019 in the France. BioInvasions Records 9(4): 753– English Channel. Aoroides longimerus was found in four sites along the Normandy 762, https://doi.org/10.3391/bir.2020.9.4.10 coast (Granville, Cherbourg, Saint-Vaast-La-Hougue, and Le Havre) while Received: 14 November 2019 A. semicurvatus was found only in two sites (Granville and Saint-Vaast-La-Hougue). Accepted: 11 May 2020 Because both species were recorded (2009–2014) from the French Atlantic coast, Published: 17 September 2020 they have probably been introduced to the English Channel through the accumulated fouling of the hulls of ships used primarily for recreational purposes or by transfer Handling editor: Darren Yeo of the Japanese oyster Crassostrea gigas between oyster farms along the French Thematic editor: April Blakeslee oyster production intertidal zones. Copyright: © Dauvin et al. This is an open access article distributed under terms Key words: introduced species Le Havre harbour non-native species fouling Bay of the Creative Commons Attribution License , , , , (Attribution 4.0 International - CC BY 4.0).
    [Show full text]
  • Ampithoe Valida Class: Malacostraca Order: Amphipoda, Gammaridea a Gammarid Amphipod Family: Ampithoidae
    Phylum: Arthropoda, Crustacea Ampithoe valida Class: Malacostraca Order: Amphipoda, Gammaridea A gammarid amphipod Family: Ampithoidae Description Coxae: Coxa one extended Size: Both illustrated specimens (from Coos anteriorly, particularly coxal plate one (Fig. 1) Bay), a male and female, were 10 mm in (Barnard 1965). length. Size range up to 12.5 mm (Chapman Gnathopod 1: Male gnathopod article 2007). five has a distal projection and is slightly Color: Green with black chromatophores and longer than article six. Article two is very red eyes. setose and article six has an oblique angle to General Morphology: The body of the palm (Fig. 3). The gnathopod palm in amphipod crustaceans can be divided into females is also oblique (not figured). three major regions. The cephalon (head) or Gnathopod 2: Male gnathopod cephalothorax includes antennules, antennae, articles two and three have large rounded mandibles, maxillae and maxillipeds lobes. Article five is with a narrow hind lobe, (collectively the mouthparts). Posterior to article six is elongate, rectangular, with a the cephalon is the pereon (thorax) with transverse palm and a quadrate middle bump seven pairs of pereopods attached to and dactyl (article seven) is curved (Fig. 4). pereonites followed by the pleon (abdomen) Female gnathopod two is like female with six pairs of pleopods. The first three sets gnathopod one (palm oblique), but stouter. of pleopods are generally used for swimming, Pereopods 3 through 7: while the last three are simpler and surround Pleon: the telson at the animal posterior. Ampithoid Pleonites: amphipods are in the suborder gammaridea, Urosomites: All three urosomites one of the largest groups of amphipods in short and the first two have spines (Fig.
    [Show full text]
  • Amphipod Newsletter 44 2020
    AMPHIPOD NEWSLETTER 44 2020 BIBLIOGRAPHY “THE OLD PHOTO” JEAN-CLAUDE SORBE VADIM V. TAKHTEEV PAGE 11 PAGE 65 IN MEMORIAM IN MEMORIAM PAGE 2 PAGE 6 ICA 19 PAGE 64 AMPHIPOD NEWSLETTER 44 Dear Amphipodologists, We hope this newsletter finds of you safe and healthy. The time since many of us last met in Dijon for a wonderful week of amphipodology has been difficult and heartbreaking. Many of us have also been sent into isolation Statistics from and “home-officing”, and the daily contact with our colleagues is now more than ever depending on emails and electronic platforms for contact. this Newsletter Conferences and meetings are rapidly being moved to electronic platforms 4 new higher taxa or postponed, the latter being the case for our beloved ICA, see more about that on page 64. 7 new families We are happy to see that the facebook group is active, and our bibliography 3 new subfamilies might give indication that, for some of us, the time away from the lab has 19 new genera brought about the possibility to focus on writing. Writing publications is not an easy task when combined with homeschooling or care for family- 92 new species members and neighbours “locked up” in their homes, and we are very impressed with the 397 publications the bibliography presents. Also, make sure to check out the last page for a new feature: “the old photo”. We hope this will bring happy memories to some, and pleasure to all. 2020 has also seen the debate of scientific recognition (in the form of impact factor) for one of the journals several of our taxonomy-oriented colleagues are using - Zootaxa.
    [Show full text]
  • (Amphipoda) Allows the Identification of a New Species, Jassa Cadetta Sp
    ARTICLE IN PRESS Organisms, Diversity & Evolution 8 (2008) 337–345 www.elsevier.de/ode A cytogenetical study of Ischyroceridae (Amphipoda) allows the identification of a new species, Jassa cadetta sp. n., in the Lagoon of Venice Traudl Krappa, Massimiliano Rampinb, Angelo Libertinib,Ã aForschungsinstitut Museum A. Koenig, Adenauerallee 160, 53113 Bonn, Germany bCNR-Institute of Marine Science, Riva 7 Martiri 1364/A, 30122 Venezia, Italy Received 20 November 2007; accepted 16 June 2008 Abstract Jassa cadetta sp. n. (Amphipoda: Ischyroceridae) is described from the Venice Lagoon, northern Adriatic Sea, and a key to Mediterranean members of the genus Jassa Leach is provided. The new species is separated from J. marmorata Holmes primarily by cytogenetics, differing in chromosome number (2n ¼ 10 in J. cadetta vs. 2n ¼ 12 in J. marmorata), karyotype morphology (FN ¼ 20 vs. FN ¼ 22), and chromosome location of 18S-5.8S-28S ribosomal cistrons. Cytogenetic analysis of Ischyrocerus anguipes Krøyer (2n ¼ 10, FN ¼ 18) gives a first insight into karyological diversity among Ischyroceridae. Analysis of random amplified polymorphic DNA markers confirms the distinction between J. cadetta sp. n. and J. marmorata. r 2008 Gesellschaft fu¨ r Biologische Systematik. Published by Elsevier GmbH. All rights reserved. Keywords: Amphipoda; Northern Adriatic Sea; Cytogenetics; PCR-RAPD; New species Introduction examines early embryos as material for karyotyping (Libertini et al. 2000); the body of the corresponding Libertini et al. (2000) published a monograph on the ovigerous female is usually preserved for species cytogenetics of Jassa marmorata Holmes, 1903 from the identification. One female from the Lido mouth, Venice Lagoon. The population was characterized by a identified as J.
    [Show full text]
  • Khammassi Et Al
    Inventory and new records of benthic Amphipods from macrophytes and fine sand communities of the Bizerte lagoon (Tunisia, SW Mediterranean Sea) Marwa Khammassi, Jérôme Jourde, Wahiba Zaabar, Sarra Laabidi, Pierre-Guy Sauriau, Mohamed Sghaier Achouri To cite this version: Marwa Khammassi, Jérôme Jourde, Wahiba Zaabar, Sarra Laabidi, Pierre-Guy Sauriau, et al.. In- ventory and new records of benthic Amphipods from macrophytes and fine sand communities of the Bizerte lagoon (Tunisia, SW Mediterranean Sea). Marine Biodiversity Records, Cambridge University Press, 2019, 12 (24), 10.1186/s41200-019-0182-5. hal-02398718 HAL Id: hal-02398718 https://hal.archives-ouvertes.fr/hal-02398718 Submitted on 7 Jan 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution| 4.0 International License Khammassi et al. Marine Biodiversity Records (2019) 12:24 https://doi.org/10.1186/s41200-019-0182-5 MARINE RECORD Open Access Inventory and new records of benthic amphipods from macrophytes and fine sand communities of the Bizerte lagoon (Tunisia, SW Mediterranean Sea) Marwa Khammassi1, Jérôme Jourde2* , Wahiba Zaabar1, Sarra Laabidi1, Pierre-Guy Sauriau2 and Mohamed Sghaier Achouri1 Abstract Shallow water benthic communities from the Bizerte lagoon (northern Tunisia) were investigated at 33 stations sampled in April and July of 2016 and 2017.
    [Show full text]