Effects of seasonal changes on the population levels of some plant-parasitic nematodes in the plantations of Pinus caribaea and P. oocarpa in the savanna areas of Nigeria
The mean values of the total number of nematodes found in each of four pine plantations in Nigeria were depressed during the dry season to a minimum between March and April. A gradual increase in the population started from June-July, and the population reached its peak in August-October. The season...
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| Veröffentlicht in: | Forest ecology and management 1993-09, Vol.60 (3-4), p.345-353 |
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| creator | GBADEGESIN, R. A ADESIYAN, S. O KHAN, F. A |
| description | The mean values of the total number of nematodes found in each of four pine plantations in Nigeria were depressed during the dry season to a minimum between March and April. A gradual increase in the population started from June-July, and the population reached its peak in August-October. The seasonal decline in nematode population coincided with the period of low soil moisture. An important ecological factor affecting population changes in the selected plantations was the vegetation cover; while a gradual decline in nematode population was observed in the 1968, 1974a and 1974b plantations, which have a full canopy, a sharp decline in nematode population was observed in the 1982 plot, which did not have a complete canopy. Populations of some nematode genera, such as Rotylenchus spp., Criconemella spp., Coslenchus spp. and Triversus spp., declined to zero in this last plantation. |
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Populations of some nematode genera, such as Rotylenchus spp., Criconemella spp., Coslenchus spp. and Triversus spp., declined to zero in this last plantation.</description><identifier>ISSN: 0378-1127</identifier><identifier>EISSN: 1872-7042</identifier><identifier>CODEN: FECMDW</identifier><language>eng</language><publisher>Amsterdam: Elsevier</publisher><subject>Biological and medical sciences ; Fundamental and applied biological sciences. Psychology ; Invertebrates ; Nematoda ; Phytopathology. Animal pests. Plant and forest protection ; Protozoa. 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Populations of some nematode genera, such as Rotylenchus spp., Criconemella spp., Coslenchus spp. and Triversus spp., declined to zero in this last plantation.</description><subject>Biological and medical sciences</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Invertebrates</subject><subject>Nematoda</subject><subject>Phytopathology. Animal pests. Plant and forest protection</subject><subject>Protozoa. 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Invertebrates</topic><topic>Records, symptoms, damages, economic importance, population surveys</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>GBADEGESIN, R. A</creatorcontrib><creatorcontrib>ADESIYAN, S. O</creatorcontrib><creatorcontrib>KHAN, F. A</creatorcontrib><collection>Pascal-Francis</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Forest ecology and management</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>GBADEGESIN, R. A</au><au>ADESIYAN, S. O</au><au>KHAN, F. 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An important ecological factor affecting population changes in the selected plantations was the vegetation cover; while a gradual decline in nematode population was observed in the 1968, 1974a and 1974b plantations, which have a full canopy, a sharp decline in nematode population was observed in the 1982 plot, which did not have a complete canopy. Populations of some nematode genera, such as Rotylenchus spp., Criconemella spp., Coslenchus spp. and Triversus spp., declined to zero in this last plantation.</abstract><cop>Amsterdam</cop><pub>Elsevier</pub><tpages>9</tpages></addata></record> |
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| identifier | ISSN: 0378-1127 |
| ispartof | Forest ecology and management, 1993-09, Vol.60 (3-4), p.345-353 |
| issn | 0378-1127 1872-7042 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16901149 |
| source | Elsevier ScienceDirect Journals |
| subjects | Biological and medical sciences Fundamental and applied biological sciences. Psychology Invertebrates Nematoda Phytopathology. Animal pests. Plant and forest protection Protozoa. Invertebrates Records, symptoms, damages, economic importance, population surveys |
| title | Effects of seasonal changes on the population levels of some plant-parasitic nematodes in the plantations of Pinus caribaea and P. oocarpa in the savanna areas of Nigeria |
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