TYPE AND QUANTITY OF MARINE DEBRIS AT SELECTED PUBLIC BEACHES IN SABAH (TG. ARU & KOSUHOI) DURING DIFFERENT MONSOON SEASONS

Julyus-Melvin Mobilik1,*, Teck-Yee Ling1,

Mohd-Lokman Bin Husain2, & Ruhana Hassan1
1Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Malaysia
2Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia

*Email: julyus.mobilik@gmail.com

ABSTRACT. Marine debris is widely distributed at the coastal area of the global oceans, but their specific sources, quantities and distribution remains inconclusive. Although the threat from marine debris pollution has beginning to be recognized in Malaysia, comprehensive studies are still lacking to document the pollution. This study adopted a standard method of beach marine debris survey to assess the type, amount and sources of debris on a one kilometer section in Tg. Aru and Kosuhoi beaches, Sabah, during surveys in December 2012 (northeast monsoon, NEM), May 2013 (intermediate monsoon, IM) and July 2013 (southwest monsoon, SWM). The mean total debris items was 1,220±532 item/km and weighing at 52.8±17.2 kg/km, where, Kosuhoi beach (1,241 item/km or 57 kg/km) received substantially greater quantities of debris compared to Tg. Aru beach (1,199 item/km or 48 kg/km). Total debris items was more abundant during SWM (1,789 item/km) compared to NEM (1,139 item/km) and IM (733 item/km) seasons. Plastic category objects were the most numerous amounting to 1,057 item/km (86.64%) in total debris items. Clear plastic bottles, food wrappers, plastic fragments, colored plastic bottles and cups were the most abundant objects collected which they contributed 606 item/km (49.69%) from the total debris item collected. The main source of debris objects abundance was from common source which contributed 52% from the total debris objects, whereas, those from terrestrial and marine sources contributed 32% and 16% respectively.  The high percentage of terrestrial and common sources debris requires marine environment stakeholders to diversify their approach and priority in mitigating this alarming result especially during SWM period. Awareness program is an effective preventive measure that should be continued and intensified. However, the program should focus on target group to ensure the awareness effectiveness to reduce if not totally eliminate the debris in the marine environment.

KEYWORDS. Beach pollution, plastic, monsoon seasons, marine debris source, Sabah

 

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BIRD POPULATION IN TWO YEARS OLD Acacia mangium PLANTATION, SABAH FOREST INDUSTRIES SDN BHD

Kee Sze Lue, Jephte Sompud*, Lee Woon Jah, Cynthia Boon Sompud, Emily Gilbert
Faculty of Science and Natural Resources,
Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah
E-mail: jefty2003@gmail.com

ABSTRACT. Large areas of tropical forest worldwide have been converted rapidly into forest plantation. Plantation can play an important role in restoring productivity, ecosystem stability, and biological diversity to degraded tropical lands. However, the conversion of forest areas to plantation rapidly resulting birds to lose their natural habitat. Therefore, Acacia mangium plantations have the potential as the refuges for birds. As such, this study was conducted to investigate the bird population in 2-year Acacia mangium plantation, Sabah Forest Industries (SFI), Sabah to determine the bird population density and diversity of 2 year mangium plantation in SFI. There is no published information of the detailed status of bird in SFI yet. Bird survey was done by using point count method. The bird population density was analyzed by using distance 6.2 and bird diversity was calculated by using Shannon-Wiener diversity index. A total of 343 birds belong to 53 species from 21 families were detected. The bird population in 2-year mangium plantation was 17.71 individual per hectare and Shannon-Wiener diversity index for bird diversity was 3.24. This study shows that the bird population density and diversity in SFI were higher as compared to other past studies in Borneo plantation area.

KEYWORDS. Forest plantation, population density, bird diversity, Acacia mangium,  Sabah

 

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