Secret Gardens Under the Sea: What are Seagrass Meadows and Why are They Important?

Cullen-Unsworth, Leanne C.; Jones, Benjamin L.; Lilley, Richard J.; Unsworth, Richard K. F.

doi:10.3389/frym.2018.00002

Cited by 6 publications

(2 citation statements)

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“…Seagrasses are not the same as seaweeds, which are less complex non-flowering algal plants. Seagrasses cover large portions of the seafloor in brackish water, which are called seagrass meadows or seagrass beds (Cullen-Unsworth et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Seagrass fatalities in North Biscayne Bay, South Florida due to increases in nutrients and macroalgae in its environment

Carbonell¹,

Joykutty²,

Velde³

2021

J Stud Res

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Biscayne Bay is a subtropical estuary located in South Florida. It is a rich environment containing a multitude of organisms such as seagrass, sponges, and fish. The Biscayne Bay ecosystem is currently undergoing a drastic environmental decline due to seagrass fatalities throughout the area, specifically in North Biscayne Bay. This literature review pinpointed the causes and effects of these seagrass fatalities from analyzed research that has been completed on this subject. The research papers found for this review came from five databases: Google Scholar, the Biscayne Bay Task Force Database (HPI), Gale in Context, Gale Academic OneFile and JSTOR. A total of 245 papers were looked over and 18 articles were left to use for this review. From those papers, it was concluded that the most probable cause of the seagrass fatalities was the pollution runoff from metropolitan areas that stimulated nutrient overloads. These nutrient overloads are factors that cause algal blooms, which in turn cause these seagrass fatalities due to lack of sunlight and resources for photosynthesis. The lack of seagrass regulating the fragile Biscayne Bay environment is also causing an influx of fish deaths, which is bringing about a local economic decline in commercialized fishing. Without the properties of seagrass in Biscayne Bay, it can cause a more drastic environmental meltdown that may not be fixable.

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Section: Introductionmentioning

confidence: 99%

Seagrass fatalities in North Biscayne Bay, South Florida due to increases in nutrients and macroalgae in its environment

Carbonell¹,

Joykutty²,

Velde³

2021

J Stud Res

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“…Padang lamun juga berperan menyerap dan penyimpan karbon (blue carbon sink) sehingga dapat memperlambat laju perubahan iklim. Lamun disampig memimiliki kemampuan menyimpan carbon juga mampu penyerap dan mengikat polutan sehingga menjaga perairan tetap jernih dan sehat (Cullen-Unsworth et al, 2018).…”

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Perbandingan Tutupan Antar Lamun, Makroalga dan Epifit Di Perairan Paciran Lamongan

2021

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Ekosistem padang lamun merupakan suatu ekosistem yang kompleks dan mempunyai fungsi dan manfaat yang sangat penting bagi perairan wilayah pesisir. Lamun, makroalga dan epifit merupakan biota laut yang hidupnya saling berdampingan. Epifit merupakan organisme yang hanya menempel pada permukaan tumbuhan seperti pada bagian daun dan rhizome lamun. Makroalga pada umumnya hidup pada kawasan intertidal yang memiliki variasi faktor lingkungan yang cukup tinggi. Keberadaan makroalga seringkali menjadi kompetitor bagi lamun yang hidup di ekosistem yang sama. Penelitian ini bertujuan untuk mengetahui perbandingan tutupan lamun, makroalga dan epifit di Perairan Paciran, Lamongan, Jawa Timur. Pengambilan data dilakukan di 3 Stasiun yaitu pelabuhan, pemukiman warga dan TPI. Pendataan dilakukan dengan menggunakan metode line transek. Hasil penelitian didapatkan 2 jenis lamun yaitu Enhalus acorodes dan Thalassia hempricii. Prosentase tutupan lamun pada ketiga Stasiun berkisar 16,7% - 34,3%. Hasil rata-rata tutupan makroalga yang terdapat pada ketiga Stasiun yaitu hanya 7%. Rata-rata tutupan epifit yang terdapat pada ketiga Stasiun yaitu sebesar 16%. Kondisi perairan di Paciran masih tergolong baik karena sesuai dengan baku mutu yang ada. The seagrass ecosystem is a complex ecosystem and has very important functions and benefits for coastal waters. Seagrass, macroalgae and epiphytes are marine biota that live side by side. Epiphytes are organisms that only attach to plant surfaces such as leaves and seagrass rhizomes. Macroalgae generally live in intertidal areas that have a fairly high variation of environmental factors. The presence of macroalgae is often a competitor for seagrasses that live in the same ecosystem. This study aims to determine the comparison of seagrass cover, macroalgae and epiphytes in Paciran waters, Lamongan, East Java. Data collection was carried out at 3 stations, namely ports, residential areas and TPI. Data collection was carried out using the line transect method. The results obtained 2 types of seagrass, namely Enhalus acorodes and Thalassia hempricii. The percentage of seagrass cover at the three stations ranged from 16.7% - 34.3%. The average yield of macroalgae cover at the three stations was only 7%. The average epiphytic cover found at the three stations is 16%. The condition of the waters in Paciran is still relatively good because it is in accordance with the existing quality standards.

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Semi-supervised Adversarial Domain Adaptation for Seagrass Detection Using Multispectral Images in Coastal Areas

et al. 2020

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Seagrass form the basis for critically important marine ecosystems. Previously, we implemented a deep convolutional neural network (CNN) model to detect seagrass in multispectral satellite images of three coastal habitats in northern Florida. However, a deep CNN model trained at one location usually does not generalize to other locations due to data distribution shifts. In this paper, we developed a semi-supervised domain adaptation method to generalize a trained deep CNN model to other locations for seagrass detection. First, we utilized a generative adversarial network loss to align marginal data distribution between source domain and target domain using unlabeled data from both data domains. Second, we used a few labelled samples from the target domain to align class specific data distributions between the two domains, based on the contrastive semantic alignment loss. We achieved the best results in 28 out of 36 scenarios as compared to other state-of-the-art domain adaptation methods.

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Secret Gardens Under the Sea: What are Seagrass Meadows and Why are They Important?

Cited by 6 publications

References 6 publications

Seagrass fatalities in North Biscayne Bay, South Florida due to increases in nutrients and macroalgae in its environment

Seagrass fatalities in North Biscayne Bay, South Florida due to increases in nutrients and macroalgae in its environment

Perbandingan Tutupan Antar Lamun, Makroalga dan Epifit Di Perairan Paciran Lamongan

Semi-supervised Adversarial Domain Adaptation for Seagrass Detection Using Multispectral Images in Coastal Areas

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