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Benthic Diatoms And Foraminifera As Indicators Of Coastal Wetland Habitats Application To Palaeoenvironmental Reconstruction In A Mediterranean Delta
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Book Synopsis Benthic Diatoms and Foraminifera as Indicators of Coastal Wetland Habitats: Application to Palaeoenvironmental Reconstruction in a Mediterranean Delta by : Xavier Benito Granell
Download or read book Benthic Diatoms and Foraminifera as Indicators of Coastal Wetland Habitats: Application to Palaeoenvironmental Reconstruction in a Mediterranean Delta written by Xavier Benito Granell and published by . This book was released on 2016 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amb cinc capítols, la tesi doctoral combina l'estudi dels hàbitats presents, passats i futurs del Delta de l'Ebre, un dels ecosistemes d'aiguamolls més gran del Mediterrani occidental. S'han aplicat diferents aproximacions per cadascuna de les tres escales temporals: i) en el present, la utilitat de diatomees i foraminífers bentònics com a indicadors ecològics dels hàbitats del Delta de l'Ebre, ii) en el passat, l'ús de les comunitats de foraminífers preservades en el sediment per reconstruir els canvis associats a factors naturals i humans, i iii) en el futur, la distribució potencial dels hàbitats assumint un escenari de nul·la intervenció humana. Els resultats posen en evidència la capacitat de cadascun dels dos grups d'indicadors per caracteritzar de forma diferent tot el rang d'hàbitats deltaics, indicant que aquest coneixement pot ser útil en el context de futurs impactes del canvi climàtic (és a dir increment del nivell del mar i retrocés de la costa), ja que els models de distribució dels hàbitats són sensibles a variables eco-geogràfiques com l'elevació i distància a la costa. Per cadascun dels hàbitats identificats, s'han determinat diferents espècies indicadores de diatomees i foraminífers. Algunes d'aquestes espècies podrien detectar canvis primerencs en les comunitats degut a que els hàbitats estan afectats per múltiples factors d'estrès natural i antropogènic. Els resultats també mostren que quan es combinen les comunitats de foraminífers bentònics que habiten en la plana deltaica i els hàbitats marins adjacents, s'obté una nova eina per la reconstrucció paleoambiental en deltes. En el cas del Delta de l'Ebre, el registre de foraminífers de testimonis profunds datats amb carboni-14 va permetre rebutjar la hipòtesi que el Delta era un estuari abans de l'època dels Romans (fa uns 2000 anys). A una escala temporal inferior (10-100 anys), les comunitats de foraminífers indiquen canvis significatius en el tipus d'hàbitat com a resultat de l'introducció del cultiu intensiu de l'arròs. Aquests resultats aporten informació valuosa sobre les condicions de referència dels hàbitats del Delta de l'Ebre per tal d'informar futurs plans de restauració i monitoreig ambiental.
Book Synopsis Modern Trends in Diatom Identification by : Gabriel Cristóbal
Download or read book Modern Trends in Diatom Identification written by Gabriel Cristóbal and published by Springer Nature. This book was released on 2020-05-28 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-resolution images of phytoplankton cells such as diatoms or desmids, which are useful for monitoring water quality, can now be provided by digital microscopes, facilitating the automated analysis and identification of specimens. Conventional approaches are based on optical microscopy; however, manual image analysis is impractical due to the huge diversity of this group of microalgae and its great morphological plasticity. As such, there is a need for automated recognition techniques for diagnostic tools (e.g. environmental monitoring networks, early warning systems) to improve the management of water resources and decision-making processes. Describing the entire workflow of a bioindicator system, from capture, analysis and identification to the determination of quality indices, this book provides insights into the current state-of-the-art in automatic identification systems in microscopy.
Book Synopsis Diversity Patterns of Benthic Diatoms and Their Use as Potential Bioindicators in Western Boreal Wetlands by : Stephanie Connor
Download or read book Diversity Patterns of Benthic Diatoms and Their Use as Potential Bioindicators in Western Boreal Wetlands written by Stephanie Connor and published by . This book was released on 2017 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Widespread habitat degradation associated with resource development in Canada’s boreal zone is a major and ongoing threat to biodiversity and ecological integrity. Despite the extensive and intensive development occurring in these regions, little information exists on biological diversity and the potential impacts associated with expansion in Canada’s north. Wetlands are a prevalent landscape feature in the boreal zone and provide many ecosystem services currently at risk of being reduced or lost. In this thesis, diversity patterns of diatom communities in boreal wetlands in Canada’s largest freshwater delta - the Peace-Athabasca Delta in northern Alberta – are examined and assessed for their potential use as indicators in a large-scale biomonitoring program for the federal government. This work has shown that the traditional bioindicator, benthic macroinvertebrates, are not always sufficient indicators of all potential impacts on their own, and that diatoms may be responding to different environmental drivers than the benthic macroinvertebrates in these wetlands. In conclusion, this thesis establishes the need for expansion of standard biomonitoring protocols to include the primary producer community in order to effectively predict future anthropogenic-induced habitat change.
Book Synopsis Lower Cretaceous Deep-water Benthic Foraminifera of the Indian Ocean by : Ann E. L. Holbourn
Download or read book Lower Cretaceous Deep-water Benthic Foraminifera of the Indian Ocean written by Ann E. L. Holbourn and published by . This book was released on 1997 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seasonality, biodiversity and microhabitats in benthic foraminiferal communities by : Natasja Tamara Jannink
Download or read book Seasonality, biodiversity and microhabitats in benthic foraminiferal communities written by Natasja Tamara Jannink and published by . This book was released on 2001 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identification of Common Benthic Diatoms in Rivers by : Martyn Kelly
Download or read book Identification of Common Benthic Diatoms in Rivers written by Martyn Kelly and published by . This book was released on 2000 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Benthic Diatom Population Responses to the Oiling of Louisiana Coastal Marshes by : Jeffrey Zingre
Download or read book Benthic Diatom Population Responses to the Oiling of Louisiana Coastal Marshes written by Jeffrey Zingre and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The northern Gulf of Mexico was inundated by crude, Macondo oil following the April 2010 disaster. This study investigated the historical benthic diatom assemblages of 6 different sites between 2 bays, Barataria and Terrebonne, Louisiana, to create an otherwise absent baseline dataset. Thirty-five samples and 19,036 diatom valves were counted via oil-immersion microscopy for this project to enumerate changes in the diatom community relative to sediment-oil composition variation. The Terrebonne Bay cores were sampled across a salinity gradient with no residual hopane present, while the Barataria Bay cores were sampled in similar salinity and were heavily oiled. The diatom assemblages did not exhibit significant changes according to oil presence but there were 19 individual species (indicators) which had significant correlations with oil. This study shows that the benthic diatom populations were not significantly impacted by oil while there were some individual indicator species of oil presence.
Book Synopsis Freshwater Benthic Diatoms of Central Europe by : Horst Lange-Bertalot
Download or read book Freshwater Benthic Diatoms of Central Europe written by Horst Lange-Bertalot and published by . This book was released on 2003 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Mediterranean Experts on Climate and environmental Change (MedECC) Publisher :MedECC ISBN 13 :2957741601 Total Pages :632 pages Book Rating :4.9/5 (577 download)
Book Synopsis Climate and Environmental Change in the Mediterranean Basin – Current Situation and Risks for the Future. First Mediterranean Assessment Report by : Mediterranean Experts on Climate and environmental Change (MedECC)
Download or read book Climate and Environmental Change in the Mediterranean Basin – Current Situation and Risks for the Future. First Mediterranean Assessment Report written by Mediterranean Experts on Climate and environmental Change (MedECC) and published by MedECC. This book was released on 2020-11-17 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: The First Mediterranean Assessment Report (MAR1) prepared by the independent network of Mediterranean Experts on Climate and environmental Change (MedECC) founded in 2015 was published in November 2020. MAR1 assesses the best available scientific knowledge on climate and environmental change and associated risks in the Mediterranean Basin in order to render it accessible to policymakers, stakeholders and citizens. The report has been written by 190 scientists from 25 countries, all contributing in individual capacity and without financial compensation. The report includes a Summary for Policymakers (SPM), which comprises the key messages of the MAR1. The UNEP/MAP – Barcelona Convention Secretariat, through its Plan Bleu Regional Activity Center, and the Secretariat of the Union for the Mediterranean work in partnership to support MedECC, and to contribute to establish a sound and transparent scientific assessment process.
Book Synopsis Applications of Non-Pollen Palynomorphs by : F. Marret
Download or read book Applications of Non-Pollen Palynomorphs written by F. Marret and published by Geological Society of London. This book was released on 2021-10-29 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-awaited book about non-pollen palynomorphs (NPPs) aims to cover gaps in our knowledge of these abundant but understudied palynological remains. NPPs, such as fungal spores, testate amoebae, dinoflagellate cysts, acritarchs and animal remains, are routinely recovered from palynological preparations of marine or terrestrial material, from Proterozoic to recent geological times. This book gives the reader a comprehensive overview of the different types of NPPs, with examples from diverse time periods and environments. It provides guidance on sample preparation to maximize the recovery of these NPPs, detailed information on their diversity and ecological affinity, clarification on the nomenclature and demonstrates their value as environmental indicators. This volume will become the reference guide for any student, academic or practitioner interested in everything else in their palynological preparations.
Book Synopsis Environmental Micropaleontology by : Ronald E. Martin
Download or read book Environmental Micropaleontology written by Ronald E. Martin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microfossils are ideally suited to environmental studies because their short generation times allow them to respond rapidly to environmental change. This book represents an assessment of the progress made in environmental micropalaeontology and sets out future research directions. The taxa studied are mainly foraminifera, but include arcellaceans, diatoms, dinoflagellates, and ostracodes. The papers themselves range from reviews of applications of particular taxa to specific case studies.
Book Synopsis Quantifying Holocene Sea-level Change Using Intertidal Foraminifera by : Benjamin P. Horton
Download or read book Quantifying Holocene Sea-level Change Using Intertidal Foraminifera written by Benjamin P. Horton and published by . This book was released on 2006 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quaternary Sea-Level Changes by : Colin V. Murray-Wallace
Download or read book Quaternary Sea-Level Changes written by Colin V. Murray-Wallace and published by Cambridge University Press. This book was released on 2014-01-30 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important overview of Quaternary climates including detailed Pleistocene and Holocene sea-level changes, for researchers and graduate and advanced undergraduate students.
Book Synopsis Biogeochemical Dynamics at Major River-Coastal Interfaces by : Thomas Bianchi
Download or read book Biogeochemical Dynamics at Major River-Coastal Interfaces written by Thomas Bianchi and published by Cambridge University Press. This book was released on 2014 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive, state-of-the-art synthesis of biogeochemical dynamics and the impact of human alterations at major river-coastal interfaces for advanced students and researchers.
Book Synopsis Ecology and Palaeoecology of Benthic Foraminifera by : John W. Murray
Download or read book Ecology and Palaeoecology of Benthic Foraminifera written by John W. Murray and published by Routledge. This book was released on 2014-10-13 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an important and authoritative review of foraminiferal ecology, the first for over a decade. Professor Murray relates ecological data on living forms of foraminifera to the palaeoecology of fossil species, and defines in detail areas of global distribution.
Book Synopsis Encyclopedia of Coastal Science by : M. Schwartz
Download or read book Encyclopedia of Coastal Science written by M. Schwartz and published by Springer Science & Business Media. This book was released on 2006-11-08 with total page 1243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new Encyclopedia of Coastal Science stands as the latest authoritative source in the field of coastal studies, making it the standard reference work for specialists and the interested lay person. Unique in its interdisciplinary approach. This Encyclopedia features contributions by 245 well-known international specialists in their respective fields and is abundantly illustrated with line-drawings and photographs. Not only does this volume offer an extensive number of entries, it also includes various appendices, an illustrated glossary of coastal morphology and extensive bibliographic listings.
Book Synopsis Diatoms in the Thames Estuary, England by : Stephen Juggins
Download or read book Diatoms in the Thames Estuary, England written by Stephen Juggins and published by Lubrecht & Cramer Limited. This book was released on 1992 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
