TRANSYLVANIAN REVIEW OF SYSTEMATICAL AND ECOLOGICAL RESEARCH 15.1 The Wetlands Diversity Editors Angela Curtean-Bănăduc & Doru Bănăduc Sibiu - Romania 2013 TRANSYLVANIAN REVIEW OF SYSTEMATICAL AND ECOLOGICAL RESEARCH 15.1 The Wetlands Diversity Editors Angela Curtean-Bănăduc & Doru Bănăduc “Lucian Blaga” University of Sibiu, Faculty of Sciences, Department of Ecology and Environment Protection Published based mainly on some of the scientific materials presented at the fourth “Aquatic Biodiversity International Conference” - Sibiu/Romania 2013 Ecotur Sibiu “Lucian Blaga” University International Association for N.G.O. of Sibiu Danube Research Sibiu - Romania 2013 Scientifical Reviewers John Robert AKEROYD Sherkin Island Marine Station, Sherkin Island - Ireland. Doru BĂNĂDUC “Lucian Blaga” University of Sibiu, Sibiu - Romania. Jürg BLOESCH International Association for Danube Research, Dübendorf - Switzerland. Somchanh BOUNPHANMY National University of Lao, Vientiane - Lao. Kevin CIANFAGLIONE University of Camerino, Camerino - Italy. Angela CURTEAN-BĂNĂDUC “Lucian Blaga” University of Sibiu, Sibiu - Romania. Marian-Traian GOMOIU Romanian Academy, Bucharest - Romania. Georg Albert JANAUER University of Vienna, Vienna - Austria. Mike JOY Te Kura Matauranga o nga Taonga a Papatuanuku Massey University, Palmerston North - New Zealand. Maria LEICHTFRIED Austrian Academy of Sciences, Institute for Limnology, Mondsee - Austria. Mirjana LENHARDT Institute for Biological Research, Belgrade - Serbia. Eugenia LÓPEZ-LÓPEZ National School of Biological Sciences, National Polytechnic Institute, México D. F. - México. Sanda MAICAN Romanian Academy, Biology Institute of Bucharest, Bucharest - Romania. Jiri MUSIL Slovak Academy of Sciences, Institute of Zoology, Bratislava - Czech Republic. Darlina NAIM Sains University, Pulau Pinang - Malaysia. Horea OLOSUTEAN “Lucian Blaga” University of Sibiu, Sibiu - Romania. Erika SCHNEIDER-BINDER Karlsruhe University, Institute for Waters and River Basin Management, Rastatt - Germay. Eckbert SCHNEIDER Karlsruhe University, Institute for Waters and River Basin Management, Rastatt - Germay. Rajko SLAPNIK Slovenian Academy of Sciences, Institute of Zoology, Ljubljana - Slovenia. Viera STRAŠKRÁBOVÁ Slovak Academy of Sciences, Institute of Hidrobiology, České Budějovice - Slovakia. Teodora TRICHKOVA Bulgarian Academy of Sciences, Institute of Zoology, Sofia - Bulgaria. Editorial Assistants Swaranjit Singh CAMEOTRA Institute of Microbial Technology, Chandigarht - India. Adina FARCAŞ “Lucian Blaga” University of Sibiu, Sibiu - Romania. Irina FLOAŞIU “Lucian Blaga” University of Sibiu, Sibiu - Romania. Olivia HOZA “Lucian Blaga” University of Sibiu, Sibiu - Romania. Oriana IRIMIA-HURDUGAN “Alexandru Ioan Cuza” University of Iaşi, Iaşi - Romania. Harald KUTZENBERGER International Association for Danube Research, Wilhering - Austria. Mircea MĂRGINEAN “Lucian Blaga” University of Sibiu, Sibiu - Romania. Ana MILSTEIN Dor, M.P. Hof HaCarmel Fish and Aquaculture Research Station, Hof HaCarmel - Israel. Nathaniel PAGE Agricultural Development and Environmental Protection in Transylvania Foundation, Săcele - Romania. Shabila PARVEEN “Fatima Jinnah” Women Univesity, Rawalpindi - Pakistan. Răzvan RĂCHITĂ “Lucian Blaga” University of Sibiu, Sibiu - Romania. Victor STROILĂ “Lucian Blaga” University of Sibiu, Sibiu - Romania. Luciana URSU “Lucian Blaga” University of Sibiu, Sibiu - Romania. IN MEMORIAM Eugene Pleasants Odum (1913-2002) Eugene Pleasants Odum was an American biologist well known for his pioneering subtle approach, hard work and very valuable results on ecosystem ecology. Born in September 1913, while his mother was in holiday on Lake Sunapee in New Hampshire to escape the summer heat of Athens, Georgia (USA), he was the son of Howard Washington Odum, a respected scholar in social justice, whose studies of integrated concepts, were certainly an influence on, his son's holistic approach and concepts. Eugene Odum's studies in zoology started at the age of 15 at the University of North Carolina, when he developed a major interest in ornithology and avian ecology that was to last all his life. Eugene and Martha Huff Odum, whom he had met as a student, moved to the University of Georgia in 1940, where he served his entire career. In 1946, trying to highlight the fact that ecology was not simply a basic discipline of biology, he began writing the first edition of Fundamentals of Ecology (1953). Later in his life he admited that one of his most satisfying accomplishments was his success in revealing that ecology is not a subdiscipline of biology but a stand-alone discipline. He worked with his younger brother Howard Thomas Odum, on several major projects including: the second edition of Fundamentals of Ecology, published in 1959; The energetic Basis for Valuation of Ecosystem services, published in 2000. Through her skilled paintings, his wife enriched Eugene′s perspective of nature. Eugene and Martha′s son was a professor of environmental science at the University of Virginia. Eugene Pleasants Odum carrer shows a clear uninterrupted intellectual growth, evolving from a bird ecologist to an ecosystem ecologist and overall a holistic thinker in his late years. He supported the establishment of the Savannah River Ecology Laboratory, the Sapelo Island Marine Institute, and the world famous Institute of Ecology. He stressed the role of mutualism, the mechanism of ecosystem development, and energetics as a comon denominator across different levels of organization. He was also a philanthropist providing funding for his programmes, an environmentalist recognizing the need to protect ecological systems, and a teacher promoting integrative science. He was a relentless birdwatcher, a tireless traveler, and an enthusiastic organic gardener until his death. Although encouraged to retire officially in 1984, he continued to devote his time to writing, contributing to research publications and the fifth edition of Fundamentals of Ecology (2005). In addition to his reputation as a research ecologist, Eugene Pleasants Odum also became a respected environmentalist during the decade of environment and was quoted frequently in Time, Newsweek amd Life magazines. He played a major role in the passing of the Coastal Marshlands Protection Act of 1990 in the State of Georgia. He designated in his will that more than half his 26 acre estate at Beech Creek be placed in permanent conservation protection, thus providing habitat for the wildlife he loved. Eugene Pleasants Odum's legacy of generosity, subtle intelligence and capacity of understanding nature, will benefit generations in pursuit of education, research and service of nature. The Editors Transylvanian Review of Systematical and Ecological Research 15.1 The Wetlands Diversity 2013 CONTENTS Preface; The Editors # BIOTOPES Estimating particle concentration in natural water by speckle contrast; Dan CHICEA .......................................................................................... 1. Gerris lacustris (Linnaeus 1758) and Gerris costae (Herrich-Schäffer 1850) species - habitat relations on mountainous tributaries of Vişeu River (Maramureş, Romania); Horea OLOSUTEAN and Daniela Minodora ILIE ................................ 11. Habitat vulnerability for the Nile Crocodile (Crocodylus niloticus) in Nasser Lake (Egypt); Ashraf Hussein Ibrahim SALEM ............................................................ 19. # BIOCOENOSIS Preliminary observations on the Family Mormyridae in Oyan Dam lake (Nigeria); Olaniyi Alaba OLOPADE ................................................................................. 33. Utilization of periphytic natural food as partial replacement of commercial food in organic Tilapia culture - an overview; Ana MILSTEIN, Alon NAOR, Assaf BARKI and Sheenan HARPAZ ...... 49. Diversity and abundance patterns of amphibians in rehabilitated quarries of Bamburi near Mombasa (Kenya); Dominic Otwori ONG’OA, Rossa Nyoike NG’ENDO, Shadrack Muvui MUYA, Mathew Mugechi NYOIKE, Patrick Kenyatta MALOMZ and Zipporah Lagat OSIEMO ........................................................................................................................... 61. # ECOSYSTEMS Fisheries management influence on some ecophysiological groups of bacteria in lotic ecosystems of the Cefa Nature Park (Romania); Marioara Nicoleta FILIMON, Patricia DRĂGUŞIN, Cristina DRĂGUŞIN, Roxana POPESCU, Maria MUGUR, Claudia RATIS and Sorin VOIA ................................................................................................................................. 73. The influence of some environmental variables on diversity of Ephemeroptera, Plecoptera and Trichoptera assemblages - Vişeu Basin case study; Angela BĂNĂDUC and Horea OLOSUTEAN ....................................... 81. # HUMAN IMPACT Environmental indicators of water quality in the Cibin River (Transylvania, Romania); Ramona IANCU, Letiția OPREAN, Diana STEGĂRUȘ, Ovidiu TIȚA, Adrian BOICEAN and Ecaterina LENGYEL ................................................................. 91. Effects of the invasive Ctenophore, Mnemiopsis leidyi species, on Caspian Sea; Zahra KOHSNUD, Reza KOHSNUD and Mehdi GHOBEITIHASAB ... 117. The survey of sea cucumber fisheries on Qeshm Island coasts (Persian Gulf); Majid AFKHAMI, Maryam EHSANPOUR, Amin MOKHLECI and Kazem DARVISH BASTAMI ............................................................................................ 127. Health risks evaluation of heavy metals in sea food; Zahra KHOSHNOOD