International International Journal of Avian & Wildlife Biology最新文献_第3页

Palm wine and fruit yield responses of oil palm (Elaeis guinensis) trees to pruning frequency and season in the rain forest ecology of southern Nigeria 尼日利亚南部雨林生态中油棕(Elaeis guinensis)树的棕榈酒和果实产量对修剪频率和季节的响应

International International Journal of Avian & Wildlife Biology Pub Date : 2018-11-23 DOI: 10.15406/IJAWB.2018.03.00133

Ubi Godwin Michael

{"title":"Palm wine and fruit yield responses of oil palm (Elaeis guinensis) trees to pruning frequency and season in the rain forest ecology of southern Nigeria","authors":"Ubi Godwin Michael","doi":"10.15406/IJAWB.2018.03.00133","DOIUrl":"https://doi.org/10.15406/IJAWB.2018.03.00133","url":null,"abstract":"During the early days of commercial oil palm cultivation in Southern Nigeria, it was thought desirable to prune the leaves subtending female inflorescences to allow the bunches room to develop.1,2 This practice often led to as many as 15% of the green leaves being pruned. Doubts about the wisdom of this standard of pruning led to two experiments being laid out for this study. The results of these experiments Rutger3 showed that any pruning in excess of cutting the leaf subtending a ripe bunch led to a reduction in yield. The experiments did not have any treatment with less severe pruning. Bunting et al.,4 stated that the principle that pruning showed never removed more leaves in a year than are produced by the palm in a year. In another experiment, Ubi et al.,5 favored considerably less pruning and mentioned that although only dead and withered leaves should be pruned, harvesting made it necessary that the leaf subtending a bunch should be cut at the same time as the bunch.6,7 The authors also quoted Rutgers1 as stating that severe pruning led to an immediate increase in yield which was then followed by a serious decline from which the palms eventually recovered. In West Africa, pruning practices have been based on regular cleaning rounds aimed at removing only the dead and dying leaves8,9 Bunting et al.,4 presented the chemical analyses of 20 leaves (one year’s production). N – 38%; P – 6%; K – 8%. It can clearly be seen that the removal of large number of leaves from the field will bring a rapid drop in fertility of the soil. It was in consideration of these facts and the need to take a close study of pruning effect on palms of Southern Nigeria that this study was undertaken to examine the effect of some pruning experiments of oil palm in Southern Nigeria. Materials and methods","PeriodicalId":197316,"journal":{"name":"International International Journal of Avian & Wildlife Biology","volume":"66 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134640994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pashmina wool–a valuable commodity 羊绒是一种很有价值的商品

International International Journal of Avian & Wildlife Biology Pub Date : 2018-11-16 DOI: 10.15406/ijawb.2018.03.00131

H. Ockerman

引用次数: 0

Fish scenario in India with emphasis on Indian major carps 印度的鱼类情况，重点是印度主要的鲤鱼

International International Journal of Avian & Wildlife Biology Pub Date : 2018-11-16 DOI: 10.15406/IJAWB.2018.03.00130

B. Bais

引用次数: 18

The future survival of African elephants: implications for conservation 非洲象的未来生存:对保护的启示

International International Journal of Avian & Wildlife Biology Pub Date : 2018-10-09 DOI: 10.15406/ijawb.2018.03.00123

A. Chwalibog

引用次数: 8

No effects of drought on the most abundant small Passerine birds in Wetlands of semiarid landscapes 干旱对半干旱湿地中最丰富的小雀形目鸟类没有影响

International International Journal of Avian & Wildlife Biology Pub Date : 2018-09-12 DOI: 10.15406/ijawb.2018.03.00117

I. G. Peiró

引用次数: 1

The present situation of animal protein in Egypt and the role of camels in providing cheap and healthy meat for people in poor greenery lands 埃及动物蛋白的现状以及骆驼在为贫穷的绿色土地上的人们提供廉价和健康肉类方面的作用

International International Journal of Avian & Wildlife Biology Pub Date : 2018-08-22 DOI: 10.15406/IJAWB.2018.03.00113

A. Badawi

引用次数: 15

Foraging ranges in Southern Rockhopper Penguins (Eudyptes chrysocome chrysocome) on Isla Noir, Chile 智利黑岛南跳岩企鹅(eyptes chrysocome chrysocome)觅食范围

International International Journal of Avian & Wildlife Biology Pub Date : 2018-08-01 DOI: 10.15406/IJAWB.2018.03.00109

D. Oehler, M. Marín, Alej, R. Kusch, D. Labruna, L. A. Weakley, W. Fry

{"title":"Foraging ranges in Southern Rockhopper Penguins (Eudyptes chrysocome chrysocome) on Isla Noir, Chile","authors":"D. Oehler, M. Marín, Alej, R. Kusch, D. Labruna, L. A. Weakley, W. Fry","doi":"10.15406/IJAWB.2018.03.00109","DOIUrl":"https://doi.org/10.15406/IJAWB.2018.03.00109","url":null,"abstract":"The Southern Rockhopper Penguin, Eudyptes c. chrysocome, breeds on the Falkland/Malvina Islands, Isla Pingüino, and Ilsa de los Estados in the Atlantic Ocean and on Barnevelt, Terhalten, Buenaventura, Ildefonso, Noir and Deigo Ramirez islands around Cape Horn in the Pacific Ocean, South America.1‒3 The International Union for Conservation of Nature (IUCN) lists the Southern Rockhopper as Vulnerable on the Red List of Threatened Species.4 This South American population is estimated to consist of approximately 870,000 pairs of which the colonies on the outer island of Chile account for 46% of that total.5 Within this area, the 158,200 pairs on Isla Noir represent the largest concentration of Southern Rockhoppers along the Chilean coast.2,6 The IUCN notes declines in these population of 34% over the last thirty years that may be attributed to egg collection and other anthropogenic pressures have been recorded.7‒9 Hydrocarbon exploitation, interactions with fisheries, climate change, possible competition with increasing pinniped populations and newly developing aquaculture activities involving salmon are additional factors that may have or continue to place pressures on the Southern Rockhopper Penguin.4,10‒15 Mean survival rates in the Southern Rockhopper Penguins, in the Falkland Islands, were 84 to 96%.16","PeriodicalId":197316,"journal":{"name":"International International Journal of Avian & Wildlife Biology","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122948962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Beyond Urbanization 除了城市化

International International Journal of Avian & Wildlife Biology Pub Date : 2018-08-01 DOI: 10.15406/ijawb.2018.03.00107

K. K Dhami

{"title":"Beyond Urbanization","authors":"K. K Dhami","doi":"10.15406/ijawb.2018.03.00107","DOIUrl":"https://doi.org/10.15406/ijawb.2018.03.00107","url":null,"abstract":"recorded. Despite its well-known and acknowledged significance in terms of biodiversity, Southeast Asia has observed the highest rate of deforestation on the planet in past decade. Almost 15% forest cover was lost in the last 15 years for a progressive increase in the size and populations of its cities. More than 50% of South East Asian urban areas got developed within highly diverse ecoregions that have adversely impacted the protected areas within hotspots of biodiversity. An assessment of urbanization and its impact on biodiversity levels clearly indicates that cities support far fewer species of birds and plants as compared to similar un-urbanized regions. International Union for Conservation of Nature and Natural Resources documents 91,520 species on the IUCN Red List, a list that identifies species that need targeted recovery efforts with special focus on the conservation. The list identifies more than 25,820 species are threatened with extinction globally that include 41% of amphibians, 34% of conifers, 33% of reef-building corals, 25% of mammals and 13% of birds, however, the trend reveals a worrying concentration of Critically Endangered species in southeast Asian hotspots. IUCN Red List of Threatened Species showed that Southeast Asia had by far the highest concentration of species on the edge of extinction of any region in the world as per the comprehensive Global Mammal Assessment, 2008. The region is considered as world’s most threatened region for mammals with some parts of the region to lose 98% of the remaining forests in next decade. Similarly, Southeast Asia that supports the highest mean proportion of endemic (national level) bird species, also has the highest mean proportion of threatened bird species of all tropical regions. Deforestation is the most likely major cause of avian losses in Southeast Asia though avifauna of Southeast Asia remains one of the least studied in the tropics.","PeriodicalId":197316,"journal":{"name":"International International Journal of Avian & Wildlife Biology","volume":"281 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132970968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sighting of Indian grey hornbill and Rufous woodpecker at Nandankanan Wildlife Sanctuary, Odisha, India 在印度奥里萨邦的南丹卡南野生动物保护区，看到印度灰犀鸟和红褐色啄木鸟

International International Journal of Avian & Wildlife Biology Pub Date : 2018-07-31 DOI: 10.15406/IJAWB.2018.03.00106

R. Mohapatra

{"title":"Sighting of Indian grey hornbill and Rufous woodpecker at Nandankanan Wildlife Sanctuary, Odisha, India","authors":"R. Mohapatra","doi":"10.15406/IJAWB.2018.03.00106","DOIUrl":"https://doi.org/10.15406/IJAWB.2018.03.00106","url":null,"abstract":"Nandankanan Wildlife Sanctuary (NWS) is located between 20o23’08” to 20o24’10”N and 85o48’09” to 85o48’13” E, spreading over an area of 4.37 sq.km in the state of Odisha, Eastern India. The sanctuary enjoys a moderately hot humid climate around 30oC with annual average rainfall of 1350mm. The vegetation is of moist mixed deciduous type.1 There is scanty literature on birds of NWS. Kamal et al.,2 recorded 53 species of birds from “Kanjia” lake of NWS. A checklist of 120 species of birds of 41 families was reported by Panda et al.,3 Mohapatra et al. added one more species i.e., Stork billed kingfisher (Pelargopsis capensis) to the checklist.4 The present note intends to report addition of two new species to the above checklist. The sighted birds are Indian grey hornbill Ocyceros birostris (Scopoli, 1786) (Figure 1). Rufous woodpecker Micropternus brachyurus (Vieillot, 1818) (Figure 2). Both birds were sighted and photodocumented by the author during ad libitum field survey inside the sanctuary area. Both species were identified on site and confirmed.5,6 Indian Grey Hornbill is grey colored with white under parts, red iris & a tail with white tip and dark sub-terminal band. The bill is darkgrey to black surmounted with a casque extending upto the point of curvature in the bill. Rufous Woodpecker is a medium sized rufous colored bird with short black bill and black barring on the wing and tail. The bird lacks a crest. Male has crimson patch on ear covert which is pale buff in case of female.5,6","PeriodicalId":197316,"journal":{"name":"International International Journal of Avian & Wildlife Biology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131844843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Why are marine ecosystems biologically more diversified than their equivalent terrestrial ecosystems? 为什么海洋生态系统在生物学上比同等的陆地生态系统更多样化?

International International Journal of Avian & Wildlife Biology Pub Date : 2018-07-31 DOI: 10.15406/IJAWB.2018.03.00105

S. Tadesse

引用次数: 1