The current status of Halophila beccarii: An ecologically significant, yet vulnerable seagrass of India

Mishra, Amrit Kumar; Apte, Deepak

doi:10.1016/j.ocecoaman.2020.105484

Cited by 25 publications

(11 citation statements)

References 69 publications

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“…This also calls for trash fish monitoring from fishing activities along the eastern coast of India. Identifying the coastal ecosystems that are potential hotspots and inhabited by these threatened species will create a roadmap for better conservation and management of seahorses and their associated habitats in India (Mishra & Apte 2021;Mishra & Farooq 2022). Snout length (cm) 1…”

Section: Resultsmentioning

confidence: 99%

First record of the Great Seahorse Hippocampus kelloggi Jordan & Snyder, 1901 (Actinopterygii: Syngnathiformes: Syngnathidae) from the northwestern coast of Bay of Bengal

Behera

Mahari²,

Mishra³

2023

J. Threat. Taxa

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This study reports the first occurrence of the Great Seahorse Hippocampus kelloggi from the state of Odisha in the eastern coast (Bay of Bengal) of India. The seahorse was captured in a ring net during daily fishing activities. The sample was collected from the Ariyapalli fish landing center and identification was carried out based on the morphometric features of the specimen and the seahorse identification guide. The total length of the juvenile seahorse was 12.5 cm (with a tail length of 6.6 cm (52.8%), trunk length of 3.4 cm (27.2%) and head length of 2.5 cm (20%)). The length of the snout was 1 cm. There were 38 tail rings followed by 11 rings on the trunk of the animal. Both eye and cheek spines were present. Northward migration (~1,300 km) of this species can be a response of extensive fishing activities around the southern coast of India. This calls for increased monitoring of the coast coastal ecosystems of India on the east coast for better conservation and management of the remaining seahorse populations.

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Section: Resultsmentioning

confidence: 99%

First record of the Great Seahorse Hippocampus kelloggi Jordan & Snyder, 1901 (Actinopterygii: Syngnathiformes: Syngnathidae) from the northwestern coast of Bay of Bengal

Behera

Mahari²,

Mishra³

2023

J. Threat. Taxa

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“…Threat mitigation will be evaluated using the DAPSIR framework, a tool to manage an ecosystem locally [21]. Seagrass threats are divided into drivers and activities [22]. The driver is a trigger; the disturbance and activities are the threat that arises by the driver.…”

Section: Methodsmentioning

confidence: 99%

Seagrass rehabilitation in Thousand Islands, Jakarta: step to restore

Darus

Agus

Kurniawan

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Seagrass plays an essential role in coastal areas with ecological functions as a marine habitat, sediment trap, sediment stabilizer, nutrients filter, and dampen current. Fisheries and tourism are the seagrass ecosystem services that are the primary community livelihood in Thousand Island. However, seagrass condition has decreased in the last decade, influenced by coastal development, mass tourism, and climate change. This study aims to assessed the seagrass status and identify the threat in the last decade. Seagrass coverage was assessed in 2007 and 2018 using plot transect, and then seagrass threats were documented and collected from research articles, manuscripts, proceedings, and unpublished reports. Seagrass coverage has significantly decreased on Thousand Islands. Seagrass threats include pollution, reclamation, vessel activities, mass tourism, coastal development, climate change, and biotic factors (macroalgae and epiphyte coverage). The threats impact seagrass conditions, such as species diversity, area, and ecosystem services. Rehabilitation is needed to recover seagrass conditions using a direct or indirect approach. These findings recommend that managers should arrange the seagrass rehabilitation action plan to minimize seagrass degradation.

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“…beccarii meadows have seriously decreased, and the species has been listed as a threatened seagrass species (Vulnerable -VU) in the International Union for Conservation of Nature (IUCN) categories [1,4,24]. However, H. beccarii beds have still distributed quite commonly in some countries in Southeast Asia, such as Vietnam [20,21,25], India [26,27], the Philippines [28], Bangladesh [23], Sri Lanka [29], Malaysia [30], and Thailand [31]. H. beccarii has been recorded on the sandy bottom, sand mixed with clay and silt in estuaries, lagoons, mangroves, bays, and sheltered shallow tidal areas [20,27,[32][33][34].…”

Section: Salinity Fluctuations Can Affect Seagrasses'mentioning

confidence: 99%

“…In the natural environment, H. beccarii distributes in a salinity range of 0-37 ppt [20,23,27,31,32,34,36]. Seagrasses spread in shallow coastal waters with a depth from 0.5 to 2 m [20,26,28]. Some previous studies reported that environmental factors, such as salinity, water temperature, light, water depth, and water turbidity, affected the distribution and abundance of the seagrass, and salinity was one of the factors that played a vital role in the distribution change of this species [20,31,37,38].…”

Section: Salinity Fluctuations Can Affect Seagrasses'mentioning

confidence: 99%

Growth and morphological responses of Halophila beccarii to low salinity

et al. 2022

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Halophila beccarii Ascherson is classified as a threatened seagrass species by IUCN because of the reductive tendency of its distribution area. This seagrass is considered a euryhaline species adapted to a wide range of salinities from freshwater and brackish water to marine water. Previous studies showed that the species tends to grow better under low salinity; however, its optimum salinity has not been determined. In Vietnam, H. beccarii grows in habitats with low salinity (0–20 ppt). The results show that salinity affects the growth, survival rate, shoot density, biomass, and morphological characteristics of the grass. The leaf dimension is more prolonged and broader; the petiole and shoot length are longer at 10 ppt salinity. In contrast, both the number of shoots and biomass peak at 5 ppt and decrease at lower and higher salinities. The study reveals that H. beccarii can grow better under mesohaline conditions than freshwater and hypersaline conditions with an optimum salinity at 5–10 ppt. These findings would explain the species’ distribution dynamics in coastal environments and be helpful information for conserving the seagrass populations in habitats with fluctuating salinity as coastal lagoons in Central Vietnam.

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The current status of Halophila beccarii: An ecologically significant, yet vulnerable seagrass of India

Cited by 25 publications

References 69 publications

First record of the Great Seahorse Hippocampus kelloggi Jordan & Snyder, 1901 (Actinopterygii: Syngnathiformes: Syngnathidae) from the northwestern coast of Bay of Bengal

First record of the Great Seahorse Hippocampus kelloggi Jordan & Snyder, 1901 (Actinopterygii: Syngnathiformes: Syngnathidae) from the northwestern coast of Bay of Bengal

Seagrass rehabilitation in Thousand Islands, Jakarta: step to restore

Growth and morphological responses of Halophila beccarii to low salinity

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