Judul: Efektivitas Pembangunan Sumur Resapan dalam Pengendalian Limpasan di DAS Pesanggrahan.
Abstrak: Flood is one of the problems in Jakarta that occur periodically. This is because diminishing water conservation areas. The high surface run off causing reduced supplies of ground water. Therefore, in anticipation of the ground water reduction,then carried construction of recharge wells. By the construction of the recharging well it will be to minimize the run off of rainfall and store in the ground water. Based on used SCS method that measured on recharging well in Srengseng district, the value of the rate of infiltration recharging well is 109.44 cm/h. from runoff 48.05 mm or 65.26% of rainfall. Constucted of recharging wells 1 m2, and the depth of 2.7 m, it will be absorbed until 96,08% of rainfall. With 2766 mm/year of rainfall and 151 rainy days with build up area 140 m2 in one year will be store 372.06 m3/year of water. So this water can sufficiency of domestic for one family water demand is usually provided by regional water company
Keyword: recharging wells., water storage, run-off

Judul: Efektivitas Pembangunan Sumur Resapan dalam Pengendalian Limpasan di Kelurahan Pinang Ranti dan Bendungan Hilir Jakarta
Abstrak: Jakarta City development has caused in the decline of open green space quantity. It impacts to decreasing soil infiltration capacity, increasing surface runoff and flood potential. The construction of Sumur Resapan aims to reduce flood potential and improve ground water reserves in Jakarta. RunOff estimation method using SCS-CN obtained value of 1,68 m3 in 77m2 of water catchment area in Pinang Ranti and 2,08m3 in 95m2 of water catchment area in Bendungan Hilir. The average rate of infiltration are 41,34 cm/jam and capable to infiltrate water by 3,33 m3 in Pinang Ranti. The average rate of infiltration are 10,34 cm/jam and capable to infiltrate water by 1,61 m3 in Bendungan Hilir. By the infiltration rate, it can be concluded that Sumur Resapan will not be full or overflowing.The constructon of sumur resapan can reduce runoff and increase soil water reserves so it is able to meet water needs of society, particularly in society who doesn’t affordable yet by PDAM.
Keyword: recharging well, infiltration

Judul: Prevalence of Bird Lice on Rock Pigeon (Columba livia) in 99Wonderland Park, Selangor, Malaysia
Abstrak: Rock Pigeon (Columba livia) have coexisted with humans for thousands of years and are used for various purposes such as food and in sports. Rock pigeons may have the potential to be infested with a wide range of ectoparasites, which can have a significant impact on their life cycle. This study aims to measure the prevalence of Columba livia with bird lice in 99Wonderland Park, Selangor, Malaysia in the year 2020 and to ascertain the impact of bird lice on the health of these infested birds. Data were collected from clinical records for the month of January to December in the year 2020 from 99Wonderland Park, Selangor, Malaysia. Lice were identified in 42 of the 80 Rock pigeons examined so, the overall prevalence of lice infestations was 52.5%. The prevalence of ectoparasites was found to be higher in young Rock pigeons (60.4%) as compared to adult Rock pigeons (37.4%). Columbicola columbae (wing lice) and Colpocephalum turbinatum (body lice) are two species of lice that have been detected. Body lice were more prevalent in young Columba livia birds at 47.6% whereas wing lice were more prevalent in adult Columba livia birds at 16.7%. Most of the lice were found in the thorax and abdomen area followed by the head and neck area., Merpati Batu (Columba livia) telah hidup berdampingan dengan manusia selama ribuan tahun dan digunakan untuk berbagai keperluan seperti makanan dan olahraga. Merpati batu dapat terinfestasi dengan berbagai ektoparasit, yang dapat berdampak signifikan pada siklus hidup mereka. Penelitian ini bertujuan untuk mengetahui prevalensi Columba livia dengan kutu burung di 99 Wonderland Park, Selangor, Malaysia pada tahun 2020 dan untuk memastikan dampaknya terhadap kesehatan burung yang terinfestasi. Data dikumpulkan dari catatan klinis dari bulan Januari hingga Desember tahun 2020 dari 99Wonderland Park, Selangor, Malaysia. Kutu diidentifikasi pada 42 dari 80 merpati batu yang diperiksa sehingga, prevalensi keseluruhan infestasi kutu adalah 52,5%. Prevalensi ektoparasit ditemukan lebih tinggi pada merpati batu muda (60,4%) dibandingkan dengan merpati batu dewasa (37,4%). Columbicola columbae (kutu sayap) dan Colpocephalum turbinatum (kutu badan) adalah dua spesies kutu yang telah ditemukan. Kutu badan lebih banyak ditemukan pada burung Columba livia muda sebesar 47,6% sedangkan kutu sayap lebih banyak ditemukan pada burung Columba livia dewasa sebesar 16,7%. Sebagian besar kutu ditemukan di daerah dada dan abdomen diikuti daerah kepala dan leher.
Keyword: Columba livia, prevalence, ectoparasite, wing lice, body lice, Columba livia, prevalensi, ektoparasit, kutu sayap, kutu badan