Article (Scientific journals)
A non-destructive method to assess the status of Posidonia oceanica meadows
Gobert, Sylvie; Lefebvre, Laurence; Boissery, P. et al.
2020In Ecological Indicators, 119
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Keywords :
Mediterranean Sea; Non-destructive shoot sampling method; Posidonia oceanica; Protected species; Chemical analysis; Non-destructive examination; Water quality; Biochemical analysis; Biometric parameters; Chemical composition; Competent authorities; Non-destructive method; Sampling technique; Water quality index; Plants (botany); Ligula
Abstract :
[en] This paper presents a new non-destructive sampling technique that consists of cutting all of the leaves of a Posidonia oceanica shoot (with scissors) just above the ligula of the external leaves. Developed in an undisturbed meadow in Corsica (France) at depths of 12–15 m, this sampling technique is called the Non-Destructive Shoot sampling Method (NDSM). The results of using this method indicate that most biometric parameters and relevant water quality indices can be measured and calculated from seagrasses sampled using the NDSM. It was determined that sampling shoots using the NDSM ensured a 100% survival rate. Notably, the NDSM allowed sampled shoots to grow back to lengths similar to those of an adjacent control meadow within three months. Biochemical analyses indicated that meadow portions and seagrass leaves regrown after NDSM sampling differed little in chemical composition (C, N and P and essential metal micronutrients Fe, Cu, Zn, Mn, Ni and Mo) to control seagrasses. Thus, the NDSM limits the negative effects of the sampling. Although not lethal to the plant, sampling seagrasses according to the NDSM requires exemption from the competent authority according to local, regional or national regulations for each protected species. © 2020 Elsevier Ltd
Research center :
STARESO S.A.S, ULiege
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Gobert, Sylvie  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
Lefebvre, Laurence ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
Boissery, P.;  Agence de l'eau Rhône Méditerranée Corse – Direction Connaissance et Planification, Immeuble Le Noailles, 62 La Canebière, Marseille, 13001, France
Richir, Jonathan  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Chemical Oceanography Unit (COU)
Language :
English
Title :
A non-destructive method to assess the status of Posidonia oceanica meadows
Publication date :
2020
Journal title :
Ecological Indicators
ISSN :
1470-160X
eISSN :
1872-7034
Publisher :
Elsevier B.V.
Volume :
119
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
STARECAPMED
Funders :
Agence de l'eau Rhône Méditerranée Corse [FR]
Available on ORBi :
since 07 January 2021

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