搜索结果: 1-15 共查到“农学 Bird”相关记录29条 . 查询时间(0.014 秒)
Bird species identification using DNA barcoding technique
DNA barcode classification genetic marker DNA species
2016/12/21
DNA bar-coding is a taxonomic method that uses a short genetic marker in an organism's DNA to identify it as belonging to a particular species.DNA barcoding first came to the attention of the scientif...
Detectability as an important factor influencing the knowledge of bird diversity in a floodplain forest ecosystem
bird transect census hardwood floodplain forest
2015/5/18
Knowledge of the structure and diversity of bird populations in forest ecosystems is important for the
conservation of forest biodiversity.
The effect of floodplain forest fragmentation on the bird community
bird communities floodplain forest forest management
2015/4/14
The paper reports the results of a study focused on ornithocoenoses of floodplain forests in Litovelské Pomoraví locality (Czech Republic). The edge effect on diversity of the bird community is discus...
Bird skin has a number of specific properties. The uropygial gland is a significant skin gland in many species. The secretion of this gland is particularly necessary for maintaining physical character...
Can clearcuts increase bird species richness in managed forests?
forestry diversity forest conservation rarefaction gaps
2015/3/12
Clearcuts are one of the results of forest management. The aim of this study was to assess the effect of clearcuts on bird communities in a managed forest in Western Poland. I applied the method of po...
Detectability as an important factor influencing the knowledge of bird diversity in a floodplain forest ecosystem
bird transect census hardwood floodplain forest regression model
2015/5/6
Knowledge of the structure and diversity of bird populations in forest ecosystems is important for the conservation of forest biodiversity. The results of bird population studies in forest ecosystems ...
Fecundity and Development Rate of the Bird Cherry-oat Aphid, Rhopalosiphum padi (L) (Hom.: Aphididae) on Six Wheat Cultivars
Rhopalosiphum padi wheat cultivars biological parameters
2015/3/5
Rhopalosiphum padi is a polyphagous species with a nearly worldwide distribution. Biological parameters of this
aphid on six commonly grown wheat cultivars in the Fars province including Chamran, Da...
Influence of forest stand structure on the occurrence of bird community in Skalná Alpa National Nature Reserve in the Veľká Fatra Mts. (West Carpathians)
primeval forest texture diameter structure dead wood bird community
2015/2/2
The study deals with the influence of the structure, texture and dynamics of a spruce-beech primeval forest on the bird community in Skalná Alpa National Nature Reserve in the Veľká Fatra Mts. (W...
Find of bird-pox (variola avium) in blackcap (Sylvia atricapilla)
blackcap (Sylvia atricapilla) bird-pox skin form
2015/1/20
In August 1999 there were netted and ringed passerines in the Naděje fishpond system in Třeboň area. 14 individuals of blackcap (Sylvia atricapilla) of both sexes and various age were caught. All...
A new scientific study by the University of Queensland and BirdLife Australia has shown that volunteer bird watchers have the opportunity to affect better policy to protect threatened birds and their ...
The purpose of study was to assess the effect of bird genome on egg albumen quality. Egg albumen harvested from seven local strains of laying hens: S-55, K-44, K-66, A-88, A-22, M-55 and V-44 were tak...
The Taolimiao-Alashan Nur：its Wetland Bird Community and the Wetland Habitat Assessment
Taolimiao—Alashan Nur wetland bird community wetland habitat assessment wetland of international importance
2009/9/22
ResuIts of the field work in recent years reveal that the Taolimiao—Alashan Nur is of specific signifi—
cance to the survival of the Relict Gull Ordos subpo pu!ation while the wetland birds occurring...
The Current Status of Bird Diversity in Yunnan Province
bird diversity conservation protected birds status Yunnan
2009/9/22
Yunnan is the richest province in bird species in China．Seven hundred and ninety-two species of
birds were recorded in Yunnan before 1994，accounted for 63．6％ of the records in China．Among
them， one ...
Impact of Dietary Amino Acid Density on Broilers Grown for the Small Bird Market
amino acid density breast meat yield broiler protein
2009/7/31
U.S. broiler integrators commonly reduce dietary amino acid density as a way of reducing overall diet cost since feed represents the majority of live production costs. It has been shown, however, that...
VARIATIONS IN BIRD POPULATIONS IN A BROAD LEAFED WOODLAND: 1975 TO 1998
Bird Census density-dependent variation
2010/3/26
Variations in passerine populations were examined at a single Common Bird Census location
over 24 years. Long term trends in the populations of Robin Erithacus rubecula, Blackbird Turdus merula, Wren...
