Posidonia oceanica (L.) Delile at Its Westernmost Biogeographical Limit (Northwestern Alboran Sea): Meadow Features and Plant Phenology

Mateo-Ramírez, Ángel; Marina, Pablo; Martín-Arjona, Alejandro; Bañares‐España, Elena; Raso, J. Enrique García; Rueda, J.L.; Urra, J.

doi:10.3390/oceans4010003

Cited by 2 publications

(2 citation statements)

References 72 publications

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“…Like other seagrasses, Posidonia species are near coastal inhabitants giving many useful opportunities to the other organisms under their canopies [4,[12][13][14][15]. One of the common Posidonia species is Posidonia oceanica (Linnaeus) Delile, 1813 which is an endemic species for the Mediterranean Sea extending to near coast of the eastern Atlantic Ocean [16]. Most (25-30%) of the Mediterranean coasts are inhabited by P. oceanica [6].…”

Section: Introductionmentioning

confidence: 99%

A Package of Script Codes, POSIBIOM for Vegetation Acoustics;<em> POSIdonia</em> BIOMass

Mutlu¹

2023

Preprint

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Macrophytes and seagrasses play a crucial role with a variety of the functions in the marine ecosystem and respond synchronized-promptly to the changing climate, followed by ecological status. Monitoring of the seagrasses was one of the paramount topics at the marine environment. One of the fast monitoring techniques is the vegetation acoustics with the advantages compared to the other remote sensing techniques. The acoustic method alone is ambitious to sea-truth identities of the backscatterers at the sea. Therefore, a package of computer programs was developed to identify, estimate leaf biometrics (leaf length and biomass) of one of the common seagrasses, Posidonia oceanica. Some troubleshooting in the acoustical data were fixed and then solved to reach the estimates regarding to the matters encountered for the vegetation as well as fisheries and plankton acoustics. One of the trouble was the “Lost” bottom which occurred during the data collection and post-processing due to occurrence of the acoustical noises, reverberations, interferences and intense scatterers suchlike fish schools. Another problem to remove was the occurrence as studying the near-bottom echoes belonging to submerged vegetations such as seagrasses, followed by spurious echoes. Last one was recognition of the seagrass to estimate leaf length and biomass calibrating the sheaths/vertical rhizome of the seagrass and establishing relationships between acoustical units and biometrics, respectively. As a consequence, an autonomous package of the code written in language MatLab was developed to perform all processes, and the name of the package was abbreviated as POSIBIOM, POSIdonia BIOMass. This study presented the algorithms, methodology, acoustics-biometrics relation, and mapping of the biometrics for the first time, and discussed advantages and disadvantages of the package compared to the software purposed for the bottom types, habitat and vegetation acoustic. The future studies were recommended to improve the package.

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Section: Introductionmentioning

confidence: 99%

A Package of Script Codes, POSIBIOM for Vegetation Acoustics;<em> POSIdonia</em> BIOMass

Mutlu¹

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Like other seagrasses, Posidonia species can provide many useful habitats for other organisms under its canopies [4,[12][13][14][15]. One of the most common Posidonia species is Posidonia oceanica (Linnaeus) Delile, 1813, which is an endemic species found in the Mediterranean Sea and extending to the near shore of the eastern Atlantic Ocean [16]. Most (25-30%) Mediterranean coasts are inhabited by P. oceanica [6].…”

Section: Introductionmentioning

confidence: 99%

A Package of Script Codes, POSIBIOM for Vegetation Acoustics: POSIdonia BIOMass

Mutlu

2023

JMSE

View full text Add to dashboard Cite

Macrophytes and seagrasses play a crucial role in a variety of functions in marine ecosystems and respond in a synchronized manner to a changing climate and the subsequent ecological status. The monitoring of seagrasses is one of the most important issues in the marine environment. One rapidly emerging monitoring technique is the use of acoustics, which has advantages compared to other remote sensing techniques. The acoustic method alone is ambiguous regarding the identities of backscatterers. Therefore, a computer program package was developed to identify and estimate the leaf biometrics (leaf length and biomass) of one of the most common seagrasses, Posidonia oceanica. Some problems in the acoustic data were resolved in order to obtain estimates related to problems with vegetation as well as fisheries and plankton acoustics. One of the problems was the “lost” bottom that occurred during the data collection and postprocessing due to the presence of acoustic noise, reverberation, interferences and intense scatterers, such as fish shoals. Another problem to be eliminated was the occurrence of near-bottom echoes belonging to submerged vegetation, such as seagrasses, followed by spurious echoes during the survey. The last one was the recognition of the seagrass to estimate the leaf length and biomass, the calibration of the sheaths/vertical rhizomes of the seagrass and the establishment of relationships between the acoustic units and biometrics. As a result, an autonomous package of code written in MATLAB was developed to perform all the processes, named “POSIBIOM”, an acronym for POSIdonia BIOMass. This study presents the algorithms, methodology, acoustic–biometric relationship and mapping of biometrics for the first time, and discusses the advantages and disadvantages of the package compared to the software dedicated to the bottom types, habitat and vegetation acoustics. Future studies are recommended to improve the package.

show abstract

Posidonia oceanica (L.) Delile at Its Westernmost Biogeographical Limit (Northwestern Alboran Sea): Meadow Features and Plant Phenology

Cited by 2 publications

References 72 publications

A Package of Script Codes, POSIBIOM for Vegetation Acoustics;<em> POSIdonia</em> BIOMass

A Package of Script Codes, POSIBIOM for Vegetation Acoustics;<em> POSIdonia</em> BIOMass

A Package of Script Codes, POSIBIOM for Vegetation Acoustics: POSIdonia BIOMass

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