A rapid assessment of species-specific bird strike risk at the Kotoka International Airport in Accra, Ghana

Ostrich ◽  
2015 ◽  
Vol 86 (3) ◽  
pp. 277-285 ◽  
Author(s):  
Lars H Holbech ◽  
Augustus Asamoah ◽  
Erasmus H Owusu
2010 ◽  
Vol 61 (4) ◽  
pp. 389-397 ◽  
Author(s):  
Ljerka Prester ◽  
Tatjana Orct ◽  
Jelena Macan ◽  
Jelena Vukušić ◽  
Dubravka Kipčić

Determination of Biogenic Amines and Endotoxin in Squid, Musky Octopus, Norway Lobster, and Mussel Stored at Room TemperatureLittle research has been published on the indicators of spoilage in Mediterranean molluscan shellfish and crustaceans. Thus is why we studied changes in the concentrations of endotoxin and four biogenic amines (histamine, putrescine, tyramine and cadaverine) in European common squid (Loligo subulata, Lamarck, 1798), musky octopus (Eledone moschata, Lamarck, 1798), Norway lobster (Nephrops norvegicus, Linnaeus, 1758), and mussel (Mytilus galloprovincialis, Lamarck, 1819) from the Adriatic Sea stored at room temperature for 24 h. Endotoxin load in fresh squid, Norway lobster, and mussel (<1 EU mg-1) indicated good microbiological quality of raw samples. Biogenic amine index (as the sum of histamine, putrescine, tyramine, and cadaverine) correlated well with endotoxin load in squid (r=0.978, p<0.001) and musky octopus (r=0.874, p<0.01). A good correlation was also found between endotoxin and putrescine in Norway lobster (r=0.777, p<0.05). The highest endotoxin load was found in decomposed mussels and was associated with histamine alone. In conclusion, increase in biogenic amine levels is species-specific. Endotoxin analysis could be used for rapid assessment of microbiological quality of cephalopods and shellfish.


1970 ◽  
Vol 9 ◽  
pp. 119-130
Author(s):  
Bhagawan R. Dahal ◽  
Dinesh R. Bhuju

A study was carried out to prepare a baseline information on bird species and their dynamics at the Tribhuvan International Airport, Kathmandu. A considerable part of TIA contains grassland. A survey around the airport recorded 59 plant species, majority were berbs (57.6%). Adjacent to the airport, patches of bamboo and other trees were noticed. Based on 144 observation days during Jan-Dec 2001, the study listed 35 bird species visiting TIA, majority were residential type including scavengers. Species richness varied between 23 (January) and 14 species (August). Thirteen species were regular visitors such as dark kite and house crow. During the observation period of three hours each day afternoon, 95 birds were seen in average. The number was high in the western part of the airport which was extended to residential area. More birds were found flying from the west to the east part of the airport. Seasonally, the highest number of birds visiting TIA was in winter (133 individuals). A comparative study at a dumping site indicated that there was a close affinity between bird number/movement and waste disposal. Key words: bird strike; bird movement; seasonal variation; waste disposal DOI: 10.3126/njst.v9i0.3175 Nepal Journal of Science and Technology 9 (2008) 119-130


2000 ◽  
Vol 23 (2) ◽  
Author(s):  
Elizabeth Yohannes ◽  
Afework Bekele ◽  
Zerihun Woldu

2020 ◽  
Vol 26 (1) ◽  
pp. 1
Author(s):  
Bambang Agus Suripto ◽  
Kukuh Oktarinaria

AbstrakBird strike merupakan peristiwa tabrakan antara burung baik secara berkelompok maupun tunggal dengan pesawat terbang pada proses penerbangan. Kejadian bird strike dapat menyebabkan kecelakaan ringan hingga serius yang sangat merugikan secara ekonomi Sekalipun telah dilakukan bird control secara maksimal berdasarkan panduan yang tersedia, namun bird strike juga terkadang masih terjadi di Bandar Udara Internasional Adisutjipto Yogyakarta (JOG) dengan tingkat kerusakan pesawat dari berat sampai ringan. Salah satu jenis burung penyebab kejadian bird strike di kawasan ini adalah cangak abu. Tujuan penelitian ini adalah mengetahui besaran dan prilaku koloni burung cangak abu (Ardea cinerea) pengunjung area. Pengambilan data besaran koloni burung pengunjung dilakukan dengan penghitungan langsung (sensus); perilaku selama di lokasi antara lain waktu dan arah datang dan pergi serta aktivitas yang dilakukan burung cangak abu selama di area bandara diamati dan dicatat secara langsung. Semua data yang diperoleh dianalisis secara deskriptif-kualitatif dan diperbandingkan burung lain dan hasil penelitian lain sehingga dapat diperoleh gambaran yang jelas tentang mengapa koloni cangak abu tersebut menjadi pengunjung area bandara. Hasil penelitian menunjukkan. Keberadaan burung cangak abu di Bandara Adisutjipto berpotensi relatif terbesar menimbulkan kejadian bird strike dibanding burung jenis lainnya karena jumlah individu harian yang datang terbanyak, frekuensi kedatangannya tertinggi kedua setelah burung wallet, ukuran tubuhnya yang  relatif terbesar, terbang rendah, terbang pelan dan manuvernya juga lamban serta terbang menyilang landasan. Kondisi lingkungan area runway bandara yang luas, lapang terbuka, ditutupi hijauan rerumputan, berangin, aman dari predator, sepi jauh dari kegiatan manusia dan lokasinya yang strategis diantara zona roosting/nesting dan zona foraging/feeding menjadi lokasi yang ideal bagi koloni cangak abu untuk melakukan kegiatan harian loafing. Pengelola bandara JOG perlu meningkatkan kewaspadaan terhadap kemungkinan peningkatan kehadiran burung cangak abu, dan perlu memperluas jangkauan pengelolaan populasi cangak abu di luar wilayah bandara.AbstractBird strike is a bird collision event both in groups and singly with an aircraft in the flight process. Bird strike events can cause minor to serious accidents which are very detrimental to the economy. Although maximum bird control has been carried out based on the available guidelines, bird strikes also sometimes occur at Yogyakarta Adisutjipto International Airport (YAIA) with the level of aircraft damage from heavy to light. One type of bird that causes the bird strike incident at YAIA is grey heron. The purpose of this study was to determine the dayly individual number and behavior of the grey heron (Ardea cinerea), visitors to the YAIA area. Data collection on visitor bird colony size is carried out by direct count (census); behavior while in YAIA, including the time and direction of coming and going, and what the grey heron did during the airport area was observed and recorded directly. All data obtained were analyzed descriptively-qualitatively and compared to other birds and other research results so that a clear picture of why the colony of grey heron can be obtained as a visitor to the YAIA area. The results showed. the presence of grey heron (Ardea cinerea) at Adisutjipto Airport has the highest relative potential to cause bird strike events compared to other types of birds because the highest number of daily individuals, the second highest frequency of arrival after a glossy swiftlet, the largest relative body size, low flight, slow flight and maneuvers are also slow and fly across the runway. The YAIA runway area, which is wide, open and covered with grasses, windy, safe from predators, is quiet away from human activities and a strategic location between the roosting / nesting zone and the foraging / feeding zone makes it an ideal location for grey heron colonies to conduct colony of grey heron daily loafing activities. In conclusion, the manager of YAIA needs to increase awareness of the possibility of increasing the presence of grey herons, and it is necessary to broaden the scope of management of the grey heron population outside the YAIA region.


Author(s):  
Marina Reyne ◽  
Amanda M. Naaum ◽  
Ferdia Marnell ◽  
Neil Reid ◽  
Sarah J. Helyar

AbstractThe Natterjack toad (Epidalea calamita) is the rarest amphibian species in Ireland, regionally Red-Listed as Endangered. We applied an eDNA approach to detect species presence in breeding pond water samples. We developed a species-specific qPCR assay targeting the cytochrome c oxidase subunit I (COI). The assay was tested in silico, in vitro (DNA extracted from tissue) and in vivo (DNA extracted from water samples). Water samples were collected from five ponds with known Natterjack toad presence or absence to validate the sensitivity and specificity of the assay. The assay was shown to be highly specific to the Natterjack toad and tested positive only against toad tissue samples and eDNA samples from ponds with known species presence. We believe this method can be used for rapid assessment of species occurrence.


Author(s):  
M.T. Otten ◽  
P.R. Buseck

ALCHEMI (Atom Location by CHannelling-Enhanced Microanalysis) is a TEM technique for determining site occupancies in single crystals. The method uses the channelling of incident electrons along specific crystallographic planes. This channelling results in enhanced x-ray emission from the atoms on those planes, thereby providing the required site-occupancy information. ALCHEMI has been applied with success to spinel, olivine and feldspar. For the garnets, which form a large group of important minerals and synthetic compounds, the channelling effect is weaker, and significant results are more difficult to obtain. It was found, however, that the channelling effect is pronounced for low-index zone-axis orientations, yielding a method for assessing site occupancies that is rapid and easy to perform.


Author(s):  
Linda Sicko-Goad

Although the use of electron microscopy and its varied methodologies is not usually associated with ecological studies, the types of species specific information that can be generated by these techniques are often quite useful in predicting long-term ecosystem effects. The utility of these techniques is especially apparent when one considers both the size range of particles found in the aquatic environment and the complexity of the phytoplankton assemblages.The size range and character of organisms found in the aquatic environment are dependent upon a variety of physical parameters that include sampling depth, location, and time of year. In the winter months, all the Laurentian Great Lakes are uniformly mixed and homothermous in the range of 1.1 to 1.7°C. During this time phytoplankton productivity is quite low.


2005 ◽  
Vol 173 (4S) ◽  
pp. 18-18
Author(s):  
Joseph C. Liao ◽  
Mitra Mastali ◽  
David A. Haake ◽  
Bernard M. Churchill

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