Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management
Interactions among the components of a Sahelian wetland and the ecologic-economic significance of the wetland are described as they relate to vertebrate pest damage. Ongoing hydro-ecological changes, started by periodic meteorological droughts and sustained by the effects of large-scale hydro-agricu...
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Virginia Tech
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ftvirginiatec:oai:vtechworks.lib.vt.edu:10919/38140 2024-05-19T07:47:19+00:00 Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management Ezealor, Augustine Uwanekwu Fisheries and Wildlife Sciences Giles, Robert H. Jr. Scanlon, Patrick F. Adkisson, Curtis S. Taylor, Daniel B. Parkhurst, James A. Nigeria 1995-06-05 xiii, 231 leaves BTD application/pdf http://hdl.handle.net/10919/38140 http://scholar.lib.vt.edu/theses/available/etd-06062008-160053/ en eng Virginia Tech OCLC# 33433635 LD5655.V856_1995.E943.pdf etd-06062008-160053 http://hdl.handle.net/10919/38140 http://scholar.lib.vt.edu/theses/available/etd-06062008-160053/ In Copyright http://rightsstatements.org/vocab/InC/1.0/ Nigeria LD5655.V856 1995.E943 Dissertation Text 1995 ftvirginiatec 2024-05-01T00:40:39Z Interactions among the components of a Sahelian wetland and the ecologic-economic significance of the wetland are described as they relate to vertebrate pest damage. Ongoing hydro-ecological changes, started by periodic meteorological droughts and sustained by the effects of large-scale hydro-agricultural schemes, are described along with their impacts on wildlife habitats and other valuable wetland resources. People in most communities in the wetland reported crop depredation by vertebrate wildlife. Traditional controls of pests are still practiced, but most are ineffective or time consuming. About 64% of the communities consider acoustic scaring techniques to be the most effective methods of vertebrate pest control. Depredation intensity is exacerbated by: 1) large-scale and year-round cultivation of cereal monocultures; 2) diminishing wetland habitats which concentrates wildlife and farms in a small area, thereby creating ideal conditions for wildlife-crop interactions; and 3) poor husbandry. Yield loss estimates due to vertebrates for major wetland crops were appraised as follows: 15.6-19.9% for rice; 10.6-15.6% for millet; 7.6-14.9% for sorghum; and 25.8-30.2% for cowpea. About 28 vertebrate species were considered to be contributing to the agriculture-wildlife conflict. Quelea guelea and rodents (mainly Avicanthis niloticus, and Mastomys natalensis) were the most important pests. Waterfowl depredation was uncommon, but locally severe wherever it occurred. Philomachus pugnax, perceived by many local farmers as a serious pest of rice, was observed not to be a significant pest in the wetland. Experimental investigations of the susceptibility of local rice varieties to granivorous passerines found yarkaushe to be the most resistant. Loss of grain cereals appeared to vary locally with places closest to avian haunts suffering higher losses. The nearness of farms to fallow plots and the flooding status (in the case of rice fields) were also important determinants of depredation intensity. I propose managing the ... Doctoral or Postdoctoral Thesis Philomachus pugnax VTechWorks (VirginiaTech) |
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Open Polar |
collection |
VTechWorks (VirginiaTech) |
op_collection_id |
ftvirginiatec |
language |
English |
topic |
Nigeria LD5655.V856 1995.E943 |
spellingShingle |
Nigeria LD5655.V856 1995.E943 Ezealor, Augustine Uwanekwu Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management |
topic_facet |
Nigeria LD5655.V856 1995.E943 |
description |
Interactions among the components of a Sahelian wetland and the ecologic-economic significance of the wetland are described as they relate to vertebrate pest damage. Ongoing hydro-ecological changes, started by periodic meteorological droughts and sustained by the effects of large-scale hydro-agricultural schemes, are described along with their impacts on wildlife habitats and other valuable wetland resources. People in most communities in the wetland reported crop depredation by vertebrate wildlife. Traditional controls of pests are still practiced, but most are ineffective or time consuming. About 64% of the communities consider acoustic scaring techniques to be the most effective methods of vertebrate pest control. Depredation intensity is exacerbated by: 1) large-scale and year-round cultivation of cereal monocultures; 2) diminishing wetland habitats which concentrates wildlife and farms in a small area, thereby creating ideal conditions for wildlife-crop interactions; and 3) poor husbandry. Yield loss estimates due to vertebrates for major wetland crops were appraised as follows: 15.6-19.9% for rice; 10.6-15.6% for millet; 7.6-14.9% for sorghum; and 25.8-30.2% for cowpea. About 28 vertebrate species were considered to be contributing to the agriculture-wildlife conflict. Quelea guelea and rodents (mainly Avicanthis niloticus, and Mastomys natalensis) were the most important pests. Waterfowl depredation was uncommon, but locally severe wherever it occurred. Philomachus pugnax, perceived by many local farmers as a serious pest of rice, was observed not to be a significant pest in the wetland. Experimental investigations of the susceptibility of local rice varieties to granivorous passerines found yarkaushe to be the most resistant. Loss of grain cereals appeared to vary locally with places closest to avian haunts suffering higher losses. The nearness of farms to fallow plots and the flooding status (in the case of rice fields) were also important determinants of depredation intensity. I propose managing the ... |
author2 |
Fisheries and Wildlife Sciences Giles, Robert H. Jr. Scanlon, Patrick F. Adkisson, Curtis S. Taylor, Daniel B. Parkhurst, James A. |
format |
Doctoral or Postdoctoral Thesis |
author |
Ezealor, Augustine Uwanekwu |
author_facet |
Ezealor, Augustine Uwanekwu |
author_sort |
Ezealor, Augustine Uwanekwu |
title |
Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management |
title_short |
Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management |
title_full |
Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management |
title_fullStr |
Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management |
title_full_unstemmed |
Ecological profile of a Nigerian Sahelian wetland: toward integrated vertebrate pest damage management |
title_sort |
ecological profile of a nigerian sahelian wetland: toward integrated vertebrate pest damage management |
publisher |
Virginia Tech |
publishDate |
1995 |
url |
http://hdl.handle.net/10919/38140 http://scholar.lib.vt.edu/theses/available/etd-06062008-160053/ |
op_coverage |
Nigeria |
genre |
Philomachus pugnax |
genre_facet |
Philomachus pugnax |
op_relation |
OCLC# 33433635 LD5655.V856_1995.E943.pdf etd-06062008-160053 http://hdl.handle.net/10919/38140 http://scholar.lib.vt.edu/theses/available/etd-06062008-160053/ |
op_rights |
In Copyright http://rightsstatements.org/vocab/InC/1.0/ |
_version_ |
1799487713505705984 |