FN Archimer Export Format PT J TI Using airborne laser altimetry to estimate Sabellaria alveolata (Polychaeta: Sabellariidae) reefs volume in tidal flat environments BT AF NOERNBERG, Mauricio Almeida FOURNIER, Jerome DUBOIS, Stanislas POPULUS, Jacques AS 1:1,2;2:2;3:3;4:3; FF 1:;2:;3:PDG-DOP-DCB-DYNECO-BENTHOS;4:PDG-DOP-DCB-DYNECO-AG; C1 Univ Fed Parana, Ctr Estudos Mar, BR-83255000 Pontal Do Sul, PR, Brazil. Museum Natl Hist Nat, UMR 7208 BOREA, CNRS, F-35800 Dinard, France. Technopole Brest Iroise, DYNECO Ecol Benth, IFREMER, F-29280 Plouzane, France. C2 UNIV FED PARANA, BRAZIL MNHN, FRANCE IFREMER, FRANCE SI BREST SE PDG-DOP-DCB-DYNECO-BENTHOS PDG-DOP-DCB-DYNECO-AG IN WOS Ifremer jusqu'en 2018 copubli-france copubli-int-hors-europe copubli-sud IF 1.887 TC 33 UR https://archimer.ifremer.fr/doc/00018/12905/9942.pdf LA English DT Article DE ;LiDAR;volume;reef-building polychaete;Sabellaria alveolata;tidal flats;Bay of Mont-Saint-Michel AB This study has exploited aerial photographs and LiDAR digital elevation model to quantify intertidal complex landforms volume. A first volume estimation of the main sabellariid polychaete reef complex of the Bay of Mont-Saint-Michel - France is presented. The Sabellaria alveolata is an engineering species that heavily modifies its environment. This gregarious tube-building annelid forms dense and solid reefs of bioclastic coarse sand which can reach several km(2). Since 1970 a very strong decline of reefs has been observed. The authorities have curbed fishing activities without any noticeable changes in reef health status. The S. alveolata reef volume is estimated to be 132 048 m(3) (96 301 m(3) for Sainte-Anne reef and 35 747 m(3) for Champeaux reef). Further LiDAR data surveys will be needed to be able to understand and quantify the accretion/erosion processes in play in the reef dynamic. Because of the internal variability of topographic complexity of the reef, characterized by crevices, cracks, and holes rather than whole blocks, further studies are needed to calculate more accurately the volume of the reef. (C) 2010 Elsevier Ltd. All rights reserved. PY 2010 PD DEC SO Estuarine Coastal And Shelf Science SN 0272-7714 PU Academic Press Ltd- Elsevier Science Ltd VL 90 IS 2 UT 000283979600004 BP 93 EP 102 DI 10.1016/j.ecss.2010.07.014 ID 12905 ER EF