Showing papers on "Nycticorax published in 2012"
TL;DR: The study examined the effects of cormorants and cooccurring long-legged wading bird species including Black-crowned Night-Herons and Great Egrets on their nesting habitats by observing plant and arthropod community structure as well as soil and leaf litter characteristics at colonized and non-colonized sites on two islands in New York Harbor.
Abstract: . Colonially nesting waterbirds transfer large quantities of aquatically derived nutrients into terrestrial systems, potentially altering community and ecosystem structure. Over the past three decades, the Double-crested Cormorant (Phalacrocorax auritus) has undergone rapid population expansion throughout much of its historic range in North America, recolonizing habitats that had not supported colonial waterbirds for decades. Mounting evidence suggests that these populations are degrading the habitats they colonize primarily through the destruction of vegetation and the alteration of soil conditions. The study examined the effects of cormorants and cooccurring long-legged wading bird species including Black-crowned Night-Herons (Nycticorax nycticorax). Great Egrets (Ardea alba) and Snowy Egrets (Egretta thula) on their nesting habitats by observing plant and arthropod community structure as well as soil and leaf litter characteristics at colonized and non-colonized sites on two islands in New York...
16 citations
TL;DR: The species recorded for the first time in the Central Europe — Clinostomum heluans, Nephrostomum ramosum and Pygorchis affixus which has been brought from the wintering grounds in Africa, Echinochasmus militaris and Saakotrema metatestis brought by juvenile birds from breeding ground in the South Europe.
Abstract: A survey of 29 species of trematodes found in the Czech Republic in 530 herons of 8 species: Ardea cinerea 436 species examined (21 species of digeneas determined), A. purpurea 2 (4), Egretta alba 34 (7), E. garzetta 2 (3), Nycticorax nycticorax 28 (2), Ixobrychus minutus 19 (0), Botaurus stellaris 8 (5), Ardeola ralloides 1 (3) is presented. The species recorded for the first time in the Central Europe — Clinostomum heluans, Nephrostomum ramosum and Pygorchis affixus which has been brought from the wintering grounds in Africa, Echinochasmus militaris and Saakotrema metatestis brought by juvenile birds from breeding ground in the South Europe. Ophiosoma patagiatum and Posthodiplostomum brevicaudatum found for the first time in the Czech Republic.
11 citations
31 Oct 2012
TL;DR: A study was carried out of the water bird community structure and the dawn to dusk variation of the most common species in the Varjao de Paulinia region, situated near the Saltinho Ranch, by the reservoir, The observations were made between August, 1966 and April, 1998 as discussed by the authors.
Abstract: The Salto Grande reservoir is a highly polluted ecosystem, a permanent source of environmental problems which, however, has a rich and diversified fauna and flora. A study was carried out of the water bird community structure and the dawn to dusk variation ofthe most common species in the Varjao de Paulinia region, situated near the Saltinho Ranch, by the reservoir, The observations were made between August, 1966 and April, 1998. Tweenty-nine bird species were identified of which 21 were of the water variety. The most common species were Phalacrocorax brasilianus, Casmerodius albus e Egretta thula. Apart from these, the species Gallinula chloropus, Bubulcus ibis, Ardea cocoi, Nycticorax nycticorax, Porphyrula martinica, Jacana jacana, Dendrocygna viduata e Butorides striatus were seen practically ali year round.
4 citations
TL;DR: Blood samples taken from studied aquatic birds showed the present of AIV antibodies serotype H5N1 which is identified as positive, and 5 positive-test species, including B. ibis, E. garzetta, Ardeola speciosa and N. nycticorax were identified.
Abstract: Further detailed research is required to obtain deeper information on the role of wild birds on the distribution of Avian influenza in Asia. A research has been carried out on February–June 2007 focused on blood sampling (serosurveillance) of wild birds in Pulau Dua Nature Reserves (CAPD), Serang, Banten. The research is aimed to investigate the infection of AI virus sub-tye H5N1 on the studied wild birds. The blood samples were taken from studied aquatic birds, followed by HI (haemagglutination-inhibition) test. A total of 183 samples represent 7 water bird species were taken i.e Cattle egret Bubulcus ibis, Javan pond-heron Ardeola speciosa, Little egret Egretta garzetta, Intermediate egret Egretta intermedia, Black-crowned night heron Nycticorax nycticorax, Great egret Casmerodius albus and Grey heron Ardea cinerea. The result revealed that 41 (23.27%) samples showed the present of AIV antibodies serotype H5N1 which is identified as positive. Data showed 5 positive-test species, including B. ibis (29.27%), E. garzetta (29.27%), E. intermedia (4.88%), Ardeola speciosa (7.32%), and N. nycticorax (29.27%). A total of 41.46% were infected adult individual, whereas 58.54% were juveniles.
1 citations