Seagrass Parameter Affect the Fish Assemblages in Karimunjawa Archipelago

3rd International Conference on Tropical and Coastal Region Eco Development 2017

地球科学;生态环境科学

Susilo, Endang Sri^1 ; Sugianto, Denny Nugroho^2,3 ; Munasik^1 ; Nirwani^1 ; Suryono, Chrisna Adhi^1

Department of Marine Science, Faculty of Fisheries and Marine Science, Diponegoro University, Indonesia^1

Department of Oceanography, Faculty of Fisheries and Marine Science, Diponegoro University, Indonesia^2

Center for Coastal Disaster Mitigation and Rehabilitation Studies, Diponegoro University, Indonesia^3

关键词: Canopy structure;    Fish abundance;    Fish assemblages;    Fish communities;    Similarity indices;    Species composition;    Species number;    Stationary points;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/116/1/012058/pdf
DOI  :  10.1088/1755-1315/116/1/012058

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Seagrass beds promote high species diversity, abundance and biomass, and become important habitats for some economically important fishes. Plants of seagrasses result in structurally highly complex habitats and offering feeding grounds, shelter from predation as well as nursery areas for diverse fish assemblages. However, research on fish communities in Southeast Asian seagrass bed is rarely conducted. In the present study fish assemblages in seagrass beds with different parameters (cover, diversity and similarity indices, domination) was investigated in the Karimunjawa Islands, Indonesia. The purpose of this study were to assess whether fish assemblages differ concerning on the abundance and the species number. This study was conducted on the seagrass bed on Karimunjawa Islands in Java Sea, particularly in the water of Menjangan Besar and Menjangan Kecil Island. Line-quadrant transect was used to assess seagrass data, while the occurrence and individual number of fish harboured in the selected seagrass bed was counted by using underwater visual census in the stationary point count transects. Seagrass cover in Menjangan Kecil Island (41%) with various canopy included both upper and lower canopy was considerable higher than those in Menjangan Besar Island (5%). Fish diversity, species composition and abundance are considerably different between the two study sites. This study revealed that seagrass density or cover and canopy structure affected the fish abundance and species number harboured.