Top-down and bottom-up effects on Red Sea coral reef algae

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2012
Autor:innen
Jessen, Christian
Roder, Cornelia
Villa Lizcano, Javier
Wild, Christian
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
DOI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Beitrag zu einem Konferenzband
Publikationsstatus
Published
Erschienen in
YELLOWLEES, David, ed., Terry HUGHES, ed.. Proceedings of the 12th International Coral Reef Symposium. Townsville, Australia: James Cook University, 2012, ICRS2012_11A_1. ISBN 978-0-9808572-5-2
Zusammenfassung

Overfishing and eutrophication can lead to a reduction in herbivory and an increase in algae growth, respectively. Therefore, they are among the most significant local pressures on coral reefs. In particular Red Sea coral reefs, with their high degree of endemism, are increasingly threatened by effects of coastal development and overfishing. Here, we evaluated the independent and combined effects of the top-down factor herbivory and the bottom -up factor inorganic nutrient availability in an offshore reef of the Central Red Sea. We deployed exclosure cages and fertilizer sources in situ over 4 months (with 5 temporal samplings) to study development of dry mass and fu nctional groups of algae on installed terracotta tiles. Our findings indicate that exclusion of herbivores had a stronger impact than eutrophication alone, and the combined treatment had the highest impact. The effect of elevated nutrients alone had no impact on composition of functional algae groups, dry mass, and the development of organic carbon (Corg) and nitrogen (N) on the tiles. However, when larger herbivores were excluded, tile surface cover changed drastically from patchy non-coralline crusts to filamentous algae. Dry mass increased up to 300 times, and with additional nutrient enrichment up to 500 times, though strong successional patterns could be observed. Our study is the first from the Red Sea that evaluates top-down and bottom-up factors on algae development and underlines the importance of addressing both of these factors in management measures to preserve the local coral reef resources.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
570 Biowissenschaften, Biologie
Schlagwörter
Red Sea, Herbivory, Cage experiments, Eutrophication, Settlement tiles
Konferenz
12th International Coral Reef Symposium, 9. Juli 2012 - 13. Juli 2012, Cairns, Queensland, Australia
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690JESSEN, Christian, Cornelia RODER, Javier VILLA LIZCANO, Christian R. VOOLSTRA, Christian WILD, 2012. Top-down and bottom-up effects on Red Sea coral reef algae. 12th International Coral Reef Symposium. Cairns, Queensland, Australia, 9. Juli 2012 - 13. Juli 2012. In: YELLOWLEES, David, ed., Terry HUGHES, ed.. Proceedings of the 12th International Coral Reef Symposium. Townsville, Australia: James Cook University, 2012, ICRS2012_11A_1. ISBN 978-0-9808572-5-2
BibTex
@inproceedings{Jessen2012Topdo-66711,
  year={2012},
  title={Top-down and bottom-up effects on Red Sea coral reef algae},
  isbn={978-0-9808572-5-2},
  publisher={James Cook University},
  address={Townsville, Australia},
  booktitle={Proceedings of the 12th International Coral Reef Symposium},
  editor={Yellowlees, David and Hughes, Terry},
  author={Jessen, Christian and Roder, Cornelia and Villa Lizcano, Javier and Voolstra, Christian R. and Wild, Christian},
  note={Article Number: ICRS2012_11A_1}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/66711">
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/66711"/>
    <dc:creator>Voolstra, Christian R.</dc:creator>
    <dc:contributor>Villa Lizcano, Javier</dc:contributor>
    <dc:contributor>Wild, Christian</dc:contributor>
    <dc:language>eng</dc:language>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2023-04-21T10:13:39Z</dcterms:available>
    <dc:creator>Roder, Cornelia</dc:creator>
    <dc:creator>Villa Lizcano, Javier</dc:creator>
    <dc:contributor>Voolstra, Christian R.</dc:contributor>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:contributor>Jessen, Christian</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dcterms:issued>2012</dcterms:issued>
    <dcterms:title>Top-down and bottom-up effects on Red Sea coral reef algae</dcterms:title>
    <dc:creator>Jessen, Christian</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2023-04-21T10:13:39Z</dc:date>
    <dc:creator>Wild, Christian</dc:creator>
    <dc:contributor>Roder, Cornelia</dc:contributor>
    <dcterms:abstract>Overfishing and eutrophication can lead to a reduction in herbivory and an increase in algae growth, respectively. Therefore, they are among the most significant local pressures on coral reefs. In particular Red Sea coral reefs, with their high degree of endemism, are increasingly threatened by effects of coastal development and overfishing. Here, we evaluated the independent and combined effects of the top-down factor herbivory and the bottom -up factor inorganic nutrient availability in an offshore reef of the Central Red Sea. We deployed exclosure cages and fertilizer sources in situ over 4 months (with 5 temporal samplings) to study development of dry mass and fu nctional groups of algae on installed terracotta tiles. Our findings indicate that exclusion of herbivores had a stronger impact than eutrophication alone, and the combined treatment had the highest impact. The effect of elevated nutrients alone had no impact on composition of functional algae groups, dry mass, and the development of organic carbon (Corg) and nitrogen (N) on the tiles. However, when larger herbivores were excluded, tile surface cover changed drastically from patchy non-coralline crusts to filamentous algae. Dry mass increased up to 300 times, and with additional nutrient enrichment up to 500 times, though strong successional patterns could be observed. Our study is the first from the Red Sea that evaluates top-down and bottom-up factors on algae development and underlines the importance of addressing both of these factors in management measures to preserve the local coral reef resources.</dcterms:abstract>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Nein
Begutachtet
Ja
Diese Publikation teilen