Sea surface temperature trend analysis by Mann-Kendall test and sen’s slope estimator: a study of the Hai Phong coastal area (Vietnam) for the period 1995-2020

Based on the Mann-Kendall test and Sen’s slope method, this study investigates the monthly, seasonal, and annual sea surface temperature (SST) trends in the coastal area of Hai Phong (West of Tonkin Gulf) based on the measurements at Hon Dau Station from 1995 to 2020. The results show a sea surface warming trend of 0.02°C/year for the period 1995-2020 (significant level α = 0.1) and of 0.093°C/year for the period 2008-2020 (significant level α = 0.05). The monthly SSTs in June and September increased by 0.027°C/year and 0.036°C/year, respectively, for the period 1995-2020, and by 0.080°C/year and 0.047°C/year, respectively, for the period 2008-2020. SST trends in winter, summer, and other months were either different for the two periods or not significant enough. This may be due to the impact of ENSO, which caused interannual SST variability in the Hai Phong coastal with two intrinsic mode functions (IMF) signals a period of ~2 (IMF3) and ~5.2 years cycle (IMF4). A combination of these signals had a maximum correlation of 0.22 with ONI (Oceanic Niño Index) delayed by 8 months. ENSO events took ~8 months to affect SST at Hai Phong coastal area for 1995-2020 and caused a variation of SST within 1.2°C.

Identification of Environmental-Based Health Problems in the Coastal Area of Banyuasih Village, Pandeglang Regency, Indonesia

Sanitation is still a problem for most Indonesians who have below average welfare status, especially in coastal areas where the fishing profession is dominant. The purpose of this study is to identify environmental-based health problems in the coastal area of Banyuasih Village, Pandeglang Regency, Indonesia. The method used is cross-sectional, with the unit of analysis being the household. A sample of 157 respondents was the head of the family which was taken by simple random sampling. The results of the study indicate that environmental health factors have not met good sanitation standards. These factors are garbage disposal sites, clean water sources, family latrines, and houses to live in. The conclusion of this study is that the majority of people in this coastal area still have poor sanitation knowledge and behavior.

Upaya Perlindungan Pesisir dan Pulau-Pulau Kecil Pemerintah Provinsi Sumatera Barat dari Ancaman Abrasi dan Perubahan Iklim

Kerusakan pesisir dan pulau-pulau kecil akibat abrasi dan dampak perubahan iklim di Provinsi Sumatera Barat sudah di tingkat yang mengkhawatirkan. Kondisi geografis Sumatera Barat yang berhadapan langsung dengan Samudera Hindia membuat sifat tumbukan gelombang di pesisir relatif kuat sehingga abrasi berlangsung dengan cepat. Kerusakan ekosistem mangrove akibat penebangan, alih fungsi lahan, pencemaran muara, dan kerusakan terumbu karang akibat penggunaan bom, potas, dan pemutihan karang, turut mempercepat terjadinya abrasi. Kerusakan pesisir dan pulau-pulau kecil perlu dicegah karena dapat mengurangi keunggulan strategis pertahanan di wilayah terluar, mengganggu efektivitas fungsi infrastruktur sipil dan militer di pesisir, mengganggu stabilitas ekonomi dan mengurangi ruang hidup masyarakat, membahayakan navigasi, dan mengancam keanekaragaman hayati. Tujuan penelitian ini adalah untuk mengetahui sumberdaya dan upaya pemerintah daerah Provinsi Sumatera Barat dalam melindungi pesisir dan pulau-pulau kecil dari abrasi dan dampak perubahan iklim. Penelitian dilaksanakan pada 15-23 September 2019 di Kota Padang dan di Pulau Sipora. Pengumpulan data dilakukan dengan metode observasi, dan wawancara mendalam kepada pejabat instansi pemerintah daerah dan warga di sekitar pesisir. Data dianalisis menggunakan teknik data condensation, data display, dan conclusion drawing. Hasil penelitian menunjukkan instansi-instansi daerah memiliki keunggulan uniknya masing-masing dalam mendukung pencegahan abrasi dan adaptasi perubahan iklim, namun upaya-upaya yang dilaksanakan masih bersifat sporadis, reaktif, tidak terkoordinasi, dan tidak berkelanjutan. Sumber daya bahan baku untuk pencegahan abrasi dan adaptasi perubahan iklim tersedia melimpah di Sumatera Barat, namun sumber daya keorganisasian yang dimiliki instansi daerah relatif terbatas. Kondisi ini membuat abrasi dan dampak perubahan iklim tidak dapat dicegah secara efektif.ABSTRACTWest Sumatera Province has an alarming rate of coastal and small islands destruction caused by abrasion and the effect of climate change. Geographical characteristic of West Sumatera Province which directly face Hindia Ocean quickly have it’s coastal area eroded with abrasion caused by a strong wave. The destruction of mangrove forest and coral reefs further made the abrasion process worse. Coastal and small islands destruction need to be stopped because it could reduce military strategic advantage in national outer areas, reducing the effectiveness of military and civilian infrastructures, destabilizing economy and narrowing the living space of people, endangering the safety of ship navigation, and threatening nature’s biodiversity. The aim of this research is to understand the resources and actions of West Sumatera Province’s local government of how it protect the coastal area and small islands from abrasion and to adapt to the effects of climate change. The research was conducted in September 15 to 23 in 2019 at Padang City and Sipora Island of Kepulauan Mentawai Regency. Data collected by field observation and in-depth interview to officials from local government and the locals. Data analyzed by using data condensation, data display, and conclusion drawing analytical technique. The research shows that each provincional departments under West Sumatera Province local government have it’s own unique approach and technique to prevent abrasion and adapt to the effects of climate change, but the action taken usually implemented sporadically, reactive, uncoordinated, and not sustainable. Natural resources needed to prevent abrasion and to adapt to climate change are abundant, but the Province’s organisational resources is limited, causing the coastal area and small islands innefectively protected

High-density metals and arsenic in algae of storm emissions from the coastal area of the Severny island of the Novaya Zemlya archipelago

Purpose of the Study is to assess the potential hazard in terms of the content of high-density metals (HDMs) and arsenic (As) for the consumption of objects of the Arctic algal flora presented in storm emissions in places of probable disembarkation of a crew, the ship has come in a distress or a disaster in the water area of the northern seas of the Russian Federation.Materials and methods. The elemental composition of samples of the plants thrown by the wind-wave impact on the coastal area of the Severny island of the Novaya Zemlya archipelago. Before making the analysis, thallus fragments were dried at 80° C to constant weight to determine their dry weight with an accuracy of 1 mg. The material mineralization was carried out using a microwave mineralizer according to the standard technique. The elementary analysis was performed using MGA-915M atomic spectrometer. The data obtained were compared with the maximum permissible levels established by the current regulatory documents. According to the results of measurements, series of decreasing concentrations of HDMs in algae samples were built according to the places of collection and species.Results and Discussion. It has been found that the lowest content of HDMs and arsenic in the wind-wave emissions of algae on the Severny Island in the Russkaya Gavan Bay of the Novaya Zemlya archipelago belongs to both Laminaria digitata and vegetative parts of the thallus of most of the other ejected algae. These plants can be used for food in extreme situations by the crews of a ship (an aircraft, etc.) who has come in a distress or a disaster.

Organ-specific accumulation of toxic elements in Hilsa shad (Tenualosa ilisha) from Bangladesh and human health risk assessment

Purpose: We aimed to determine the amount of some toxic elements in three organs of Hilsa shad, focusing on the possible exposure to human health through Hilsa consumption. This study was designed to determine the concentration of seven toxic trace elements (As, Cd, Cr, Cu, Ni, Pb, and Zn) in three distinct organs (n = 21) (muscle, liver, and gills) of Hilsa shad (Tenualosa ilisha) fish collected from the Bangladeshi coastal area. The samples were digested following a microwave digestion. Inductively coupled plasma mass spectrometer was used as analytical instrument. Estimated daily intakes (EDI) and target cancer risk (TR) were used to evaluate carcinogenic and non-carcinogenic risk. Results: The mean concentrations (mg/kg-wet weight) of toxic elements in different organs of T. ilisha were determined as follows: in muscle, As (4.05), Cd (0.09), Cr (0.12), Cu (0.77), Ni (0.26), Pb (0.20), and Zn (10.64); in liver, As (2.83), Cd (0.84), Cr (0.18), Cu (6.17), Ni (0.55), Pb (0.23), and Zn (30.16) and in gills, As (3.45), Cd (0.05), Cr (0.08), Cu (1.06), Ni (0.51), Pb (0.78), and Zn (35.21). The liver showed higher concentrations of most elements than that of muscle except for As. Concentration of As, Cd, and Pb in the fish were found above the food safety guidelines, while other trace element concentrations were below the permissible range for human consumption. According to EDI and TR values, there were carcinogenic and non-carcinogenic risks from exposure to total As concentration from Hilsa fish consumption. Conclusion: This study suggests that the toxic trace elements contamination levels in Hilsa fish from Bangladesh’s coastal area need to be monitored on a systematic and regular basis to ensure the safety of this food item for human consumption.