Acoustic estimates of leaf height and biomass of Posidonia oceanica meadow in Gulf of Antalya, the eastern Mediterranean

Cansu Olguner; Erhan Mutlu

doi:10.46384/jmsf.794153

Research Article

Acoustic estimates of leaf height and biomass of Posidonia oceanica meadow in Gulf of Antalya, the eastern Mediterranean

Year 2020, Volume: 3 Issue: 2, 79 - 94, 21.12.2020

Cansu Olguner Erhan Mutlu

https://doi.org/10.46384/jmsf.794153

Cited By: 8

Abstract

Vegetation cover on the sea floor plays an important role in marine health, and sonar systems can provide detailed observation and evaluation of sea floor vegetation under rapidly changing environmental conditions. Various acoustic techniques are available for this purpose. In this study, a split beam echo sounder operating at a frequency of 206 kHz was employed. Simultaneous dive expeditions were performed for direct acoustic observations. The aim of this study was to use the BioSonics EcoSAV software program to generate acoustic estimates of leaf height and create seasonal distribution maps in Posidonia oceanica meadows distributed between Lara and Manavgat in the Gulf of Antalya (Turkey). Calculation of program parameters by species and acoustic identification of P. oceanica were carried out with the aid of the PAST 3.05 (PAleontological STatistics) statistics program, enabling isolation of P. oceanica and other non-target species from the sea floor. The results revealed three major meadow beds in the study area. The maximum leaf height was observed in July (80–90 cm), followed by April/May (70–80 cm), with the shortest leaf height in January (40–50 cm). The biomass of the leaves varied seasonally between 100 and 1000 g/m2 and decreased by the seafloor depth in a year. This method proved effective for mapping and monitoring important seasonal habitat parameters such as the distribution of aquatic vegetation.

Keywords

Acoustic identification, meadow, leaf height, biomass, temporal and spatial distribution

Supporting Institution

TUBITAK

Project Number

110Y232

References

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Antalya Körfezi’ndeki Posidonia oceanica Deniz Çayırının Yaprak Boyu ve Biyokütle Miktarının Akustiksel Tahminleri

Year 2020, Volume: 3 Issue: 2, 79 - 94, 21.12.2020

Cansu Olguner Erhan Mutlu

https://doi.org/10.46384/jmsf.794153

Cited By: 8

Abstract

Deniz tabanındaki bitkiler deniz sağlığının göstergesi olarak önemli bir rol oynarlar ve sonar sistemleri çevre koşuların ani değişimleri durumundadeniz tabanı bitki örtüsünün ayrıntılı gözlem ve değerlendirmesini sağlayabilir. Bu tür çalışmalar için değişik akustik teknikler mevcuttur. Bu çalışmada, 206 kHz frekanslı split beam ekosounder kullanılmıştır. Akustik çalışma esnasında, eşzamanlı dalış seferleri de yapılmıştır. Bu çalışmanın amacı BioSonics EcoSAV ticari yazılımı kullanarak Antalya Körfezi’nin (Türkiye) Lara-Manavgat arasındaki bölgede bulunan Posidonia oceanica yaprak boyu tahmini yapmak ve mevsimsel dağılım haritasını çıkartmaktır. Program parametrelerinin hesaplanması ve deniz tabanındaki hedef olmayan diğer türlerden P. oceanica’nın ayrılabilmesi ve P. oceanica çayırının akustik olarak tanımlanmasında PAST 3.05 (PAleontological STatistics) istatistik programı, kullanılmıştır. Sonuçta, çalışma alanında 3 büyük deniz çayırı yatağının var olduğu tespit edilmiştir. En yüksek yaprak boyu Temmuz ayında ve 80–90 cm olarak, daha kısa yaprak boyu ise Nisan/Mayıs aylarında (70–80 cm) en kısa yaprak boyu ise Ocak ayında (40–50 cm) ölçülmüştür. Yaprak biyokütlesi mevsimsel olarak 100 ve 1000 g/m2 arasında değişmiştir ve deniz tabanı derinliği ile azalmıştır. Bu metodun, sucul bitkilerin dağılımı gibi mevsimsel habitat parametrelerinin haritalanması ve izlenmesinde etkili olduğu ortaya konulmuştur.

Keywords

Akustik Tanımlama, Deniz Çayırı, Yaprak Boyu, Biyokütle, Alansal ve Zamansal Dağılım

Project Number

110Y232

References

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Balestri, E. (2004). Flowering of the seagrass Posidonia oceanica in a north-western Mediterranean coastal area: temporal and spatial variations. Marine Biology, 145:61-68. DOI: 10.1007/s00227-004-1301-2
Bhattacharya, B., Sarkar, S., & Das, R. (2003). Seasonal variations and inherent variability of selenium in marine biota of a tropical wetland ecosystem: implications for bioindicator species. Ecological Indicators, 2, 367-375. https://doi.org/10.1016/S1470-160X(03)00006-2
Bonacorsi, M., Pergent-Martini, C., Breand, N., & Pergent, G. (2013). Is Posidonia oceanica regression a general feature in the Mediterranean Sea? Mediterranean Marine Science, 14, 193-203. DOI: 10.12681/mms.334
Boudouresque, C.-F., Bernard, G., Pergent, G., Shili, A., & Verlaque, M. (2009). Regression of Mediterranean seagrasses caused by natural processes and anthropogenic disturbances and stress: a critical review. Botanica Marina, 52, 395-418. DOI: 10.1515/BOT.2009.057
Buchet, V., (2015). Impact assessment of invasive flora species in Posidonia oceanica meadows on fish assemblage: an influence on local fisheries? the case study of Lipsi Island, Greece. MsC Thesis. 99 p.
Celebi, B., Gucu, A., Ok, M., Serdar, S., & Akoglu, E. (2007). Survival of the Posidonia oceanica cuttings transplanted into the north-eastern Levant Sea. Rapp Comm Int Mer Medit 38, 446.
Ciraolo, G., Ferreri, G.B., & Loggia, G.L. (2006). Flow resistance of Posidonia oceanica in shallow water. Journal of Hydraulic Research, 44, 189-202. https://doi.org/10.1080/00221686.2006.9521675
Cirik, Ş., Akçalı, B., & Özalp, H.B. (2006). Çanakkale Boğazı ve Marmara Denizi’nde işaretleme yöntemi ile Posidonia oceanica’nın sınırlarının belirlenmesi, E.Ü. Su Ürünleri Dergisi, 23, 45-48.
Depew, D.C., Stevens, A.W., Smith, R.E., & Hecky, R.E. (2009). Detection and characterization of benthic filamentous algal stands (Cladophora sp.) on rocky substrata using a high-frequency echosounder. Limnology and Oceanography: Methods, 7, 693-705. https://doi.org/10.4319/lom.2009.7.693
Di Maida G., Tomasello A., Luzzu F., Scannavino A., Pirrotta M., Orestano C., & Calvo, S. (2011). Discriminating between Posidonia oceanica meadows and sand substratum using multibeam sonar. ICES Journal of Marine Science, 68: 12–19. DOI: 10.1093/icesjms/fsq130
Duman, M., Eronat, A.H., İlhan T., Talas E., & Küçüksezgin F. (2019). Mapping Posidonia oceanica (Linnaeus) Meadows in the Eastern Aegean Sea Coastal Areas of Turkey: Evaluation of Habitat Maps Produced Using the Acoustic Ground Discrimination Systems. International Journal of Environment and Geoinformatics, 6(1):67-75. DOI:10.30897/ijegeo.544695
Elliott, J., Fletcher, J., Elliott, J., Cubby, P., & Baroudy, E. (1996). Changes in the population density of pelagic salmonids in relation to changes in lake enrichment in Windermere (northwest England). Ecology of Freshwater Fish, 5, 153-162. DOI: 10.1111/j.1600-0633.1996.tb00128.x
Farrell, J.L., Harrison, J.P., Eichler, L.W., Sutherland, J.W., Nierzwicki-Bauer, S.A., & Boylen, C.W. (2013). Identification of Eurasian watermilfoil using hydroacoustics. Journal of Aquatic Plant Management, 51, 15–21.
Foden, J., & Brazier, D. (2007). Angiosperms (seagrass) within the EU water framework directive: a UK perspective. Marine Pollution Bulletin, 55, 181-195. https://doi.org/10.1016/j.marpolbul.2006.08.021
Gacia, E., & Duarte, C.M. (2001). Sediment retention by a Mediterranean Posidonia oceanica meadow: the balance between deposition and resuspension. Estuarine, Coastal and Shelf Science, 52, 505-514. DOI: 10.1006/ecss.2000.0753
George, D., & Winfield, I. (2000). Factors influencing the spatial distribution of zooplankton and fish in Loch Ness, UK. Freshwater Biology, 43, 557-570. DOI: 10.1046/j.1365-2427.2000.00539.x
Giakoumi, S., Sini, M., Gerovasileiou, V., Mazor, T., Beher, J., Possingham, H.P., Abdulla, A., Çinar, M.E., Dendrinos, P., Gucu, A.C., Karamanlidis, A.A., Rodic, P., Panayotidis, P., Taskin, E., Jaklin, A., Voultsiadou, E., Webster, C., Zenetos, A., & Katsanevakis, S. (2013). Ecoregion-Based Conservation Planning in the Mediterranean: Dealing with Large-Scale Heterogeneity. PLOS ONE, 8, e76449. https://doi.org/10.1371/journal.pone.0076449
Holon, F., Boissery, P., Guilbert, A., Freschet, E., & Deter, J. (2015). The impact of 85 years of coastal development on shallow seagrass beds (Posidonia oceanica L. (Delile)) in South Eastern France: A slow but steady loss without recovery. Estuarine, Coastal and Shelf Science, 165, 204-212. https://doi.org/10.1016/j.ecss.2015.05.017
IUCN, 2017. The IUCN Red List of Threatened Species. Version 2017-2. www. iucnredlist.org. http://www.iucnredlist.org/details/153534/0. Downloaded on 21 November 2017.
Komatsu, T., Mikami, A., Sultana, S., Ishida, K., Hiraishi, T., & Tatsukawa, K.-I. (2003). Hydro-acoustic methods as a practical tool for cartography of seagrass beds. Otsuchi Marine Science, 28:72-79.
Marbà, N., Díaz-Almela, E., & Duarte, C.M. (2014). Mediterranean seagrass (Posidonia oceanica) loss between 1842 and 2009. Biological Conservation, 176, 183-190. DOI:10.1016/J.BIOCON.2014.05.024
Marín-Guirao, L., Sandoval-Gil, J.M., Bernardeau-Esteller, J., Ruíz, J.M., & Sánchez-Lizaso, J.L. (2013). Responses of the Mediterranean seagrass Posidonia oceanica to hypersaline stress duration and recovery. Marine Environmental Research, 84, 60-75. doi: 10.1016/j.marenvres.2012.12.001
McCarthy, E.M., & Sabol, B. (2000). Acoustic characterization of submerged aquatic vegetation: military and environmental monitoring applications, OCEANS 2000 MTS/IEEE Conference and Exhibition. IEEE, pp. 1957-1961.
Montefalcone, M. (2009). Ecosystem health assessment using the Mediterranean seagrass Posidonia oceanica: a review. Ecological Indicators, 9, 595-604. https://doi.org/10.1016/j.ecolind.2008.09.013
Montefalcone, M., Rovere, A., Parravicini, V., Albertelli, G., Morri, C., & Bianchi, C.N. (2013). Evaluating change in seagrass meadows: A time-framed comparison of Side Scan Sonar maps. Aquatic Botany, 104, 204-212. https://doi.org/10.1016/j.aquabot.2011.05.009
Mutlu, E., Gökoğlu, M., Özvarol, Y., Balaban, C., & Olguner, T. (2014). Yaygın deniz çayırlarının akustiksel yoğunluk kalibrasyonu ve dağılımlarının takip edilmesi. Final Raporu. TÜBİTAK 110Y232.
Mutlu, E. & Balaban, C. (2018). New algorithms for the acoustic biomass estimation of Posidonia oceanica: a study ın the Antalya gulf (Turkey), Fresenius Environmental Bulletin, 27(4), 2555- 2561.
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Details

Primary Language	English
Subjects	Hydrobiology
Journal Section	Research Articles
Authors	Cansu Olguner This is me 0000-0002-6825-3587 Erhan Mutlu 0000-0002-6825-3587
Project Number	110Y232
Publication Date	December 21, 2020
Submission Date	September 12, 2020
Published in Issue	Year 2020 Volume: 3 Issue: 2

Cite

APA	Olguner, C., & Mutlu, E. (2020). Acoustic estimates of leaf height and biomass of Posidonia oceanica meadow in Gulf of Antalya, the eastern Mediterranean. Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, 3(2), 79-94. https://doi.org/10.46384/jmsf.794153