Community structure and condition of seagrass meadows in Ayau Islands, Raja Ampat Regency

Marine Research in Indonesia

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Title Community structure and condition of seagrass meadows in Ayau Islands, Raja Ampat Regency
Creator Irawan, Andri
Hafizt, Muhammad
Hernawan, Udhi Eko
Subject seagrass
outer island
baseline information
Description Seagrass meadows are an important component of coastal ecosystems, providing many ecosystem services beneficial for human well-being. Basic information about seagrass meadows in Indonesia is relatively limited, particularly in the eastern part of Indonesia, such as the remote Ayau Islands in Raja Ampat. In this paper, we reported the community structure and condition of seagrass meadows in Ayau Islands surveyed during Nusa Manggala Expedition in November 2018. We conducted the seagrass survey using quadrat transect method at five locations, i.e. Reni, Rutum, Abidon, Kanober, and Dorehkar. In the survey, we assessed parameters of community structure, including habitat extent, species composition, seagrass cover, seagrass density, macroalgae and epiphyte cover. We also recorded environmental parameters, i.e. substrate types, water clarity, salinity, water temperature, and nutrient (phosphate and nitrate). Our study showed that seagrass meadows in Ayau Islands are multispecies meadows, composed of two to five species. In overall, five species recorded in Ayau Islands are Cymodocea rotundata, Enhalus acoroides, Halodule pinifolia, Halophila ovalis, and Thalassia hemprichii. The most common species is T. hemprichii as it can be found in all locations. Meadows in Reni, Rutum, and Dorehkar are in a healthy condition, while in Abidon and Kanober are in less healthy condition. This information is of significance as baseline information needed for seagrass conservation planning.
Publisher Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)
Date 2020-07-21
Type info:eu-repo/semantics/article
Format application/pdf
Source Marine Research in Indonesia; Vol. 45 No. 1 (2020); 13-24
Language eng
Rights Copyright (c) 2020 Marine Research in Indonesia

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