Catalogus

Zoeken

Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.

Boekenmand

Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).

RSS

Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.

log in

Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

In vitro experimental assessment of the grazing pressure of two gastropods on Zostera marina L. ephiphytic algae Hily, C.; Connan, S.; Raffin, C.; Wyllie-Echeverria, S. (2004). In vitro experimental assessment of the grazing pressure of two gastropods on Zostera marina L. ephiphytic algae. Aquat. Bot. 78(2): 183-195. http://dx.doi.org/10.1016/j.aquabot.2003.10.001 In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522

---

Beschikbaar in	Auteurs
VLIZ: Open access 54974 [ download pdf ]

---

Trefwoorden

ANE, France, Brittany, Brest Bay Aquatic organisms > Heterotrophic organisms > Herbivores Behaviour > Feeding behaviour > Grazing Epibionts > Epiphytes Flora > Weeds > Marine organisms > Seaweeds > Sea grass Periodicity > Seasonality Research > Experimental research Gibbula umbilicalis (da Costa, 1778) [WoRMS]; Jujubinus striatus (Linnaeus, 1758) [WoRMS]; Zostera marina Linnaeus, 1753 [WoRMS] Bay of Brest [Marine Regions] Marien/Kust

Author keywords

seagrass; snails; microherbivores; epiphytic algae; seasonality

---

Auteurs		Top
Hily, C. Connan, S. Raffin, C. Wyllie-Echeverria, S.

---

Abstract

This study experimentally assessed the impact of gastropod grazing on epiphyton biomass and taxonomic composition on leaves of the seagrass Zostera marina L. along the coasts of Brittany, France. Image analysis was used to measure the same section of a leaf before and after grazing and assess grazing pressure. It was found that: (1) both grazers, Gibbula umbilicalis and Jujubinus striatus, were highly efficient in reducing epiphytic cover; (2) J. striatus showed a higher specific grazing rate than G. umbilicalis at an equivalent animal biomass; (3) J. striatus increased its activity when epiphytic biomass increased. Analysis of the variability of epiphytic cover along the leaves showed considerable heterogeneity from the basal part of the external leaves of a shoot to the apex. The development of long filamentous algae (mainly ectocarpales) in spring and summer and their concentration at the apex intensified shading impact on the seagrass bed. The grazing of both gastropod species was also concentrated at the apex, thereby enhancing their role in moderating the shading effect.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs