检索结果-南通市图书馆

Impact o. Human Disturbance o. Fiddler Crab (<i>Uca tangeri</i>) Burro. Mo.pho.o.y, Distributio. and Chemistry at Eagle Island, Niger Delta, Nigeria

引用

o.en Jo.rnal o. Marine Science 2020年第4期10卷 191-202页

作者： aroloye o. numbere Department o. Animal and Enviro.mental Bio.o.y University of Port Harcourt Choba Nigeria

Fiddler crabs are described as eco.ystem engineers because o. their burro. co.structing ability. It was hypo.hesized that human activity will impact crab burro.s. The study area was delineated into.lo.ly, medium and h... 详细信息

Fiddler crabs are described as ecosystem engineers because of their burrow constructing ability. It was hypothesized that human activity will impact crab burrows. The study area was delineated into lowly, medium and highly impacted plots. Crab holes were randomly counted and their width, length and surface area estimated. Burrow soils were collected and analyzed for Cadmium (Cd), Lead (Pb) and Zinc (Zn) using spectrophotometric method (HACH DR 890 colorimeter). The result indicates that burrow width was significantly different between impacted plots (P 0.05), but highly impacted plot has the longest length while lowly impacted plot has the shortest length. Again, the surface area of crab burrow varies significantly (P 2) followed by medium (390.30 ± 57.65 cm2) and high (265.16 ± 30.85 cm2) impacted plots. Similarly, lowly impacted area has more number of burrows (n = 55) followed by medium (n = 30) and highly (no.t-family:Verdana;"> = 23) impacted plo.s. Highly impacted plo. had the highest Cd and Pb co.centratio. whereas lo.ly impacted plo. had the highest Zn co.centratio.. This implies that burro. mo.pho.o.y and chemistry exemplify the level o. anthro.o.enic impa

关键词： Burro. Human Disturbance Heavy Metals Mangro.es Fiddler Crab Sand Fill

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diversity and Chemical Co.po.itio. o. Weeds in Sand-Filled Mangro.e Fo.est at Eagle Island, Niger Delta, Nigeria

引用

American Jo.rnal o. Plant Sciences 2020年第7期11卷 994-1007页

作者： aroloye o.o.numbere Department o. Animal and Enviro.mental Bio.o.y University of Port Harcourt Port Harcourt Nigeria

Mangro.es are habitat specific and gro. mainly in swampy so.l, but due to.anthro.o.enic activities (e.g. sand mining) o.her species had encro.ched into.their habitat. It is thus hypo.hesized that change in species diversity will lead to.change in so.l chemistry. In a 40 m × 90 m plo., diversity index (H) and importance value (Iv) of weed were estimated. Soil and weed samples were collected and analyzed for total hydrocarbon content (THC), Zinc (Zn), Lead (Pb) and Cadmium (Cd). All samples were analyzed with atomic absorption spectrophotometric method using the HACH DR 890 calorimeter (wavelength 420 nm). The result shows that swampy soils were more acidic (3.1 - 3.5) than sandy soils (4.2 - 4.7). Swampy soil was also more saline and thus has higher conductivity (8320 - 9880 μS/cm) than sandy soil (4320 - 5650 μS/cm). Mangrove swamp had higher total organic carbon (TOC) (2.25% - 3.41%) than sandy soil (0.12% - 0.21%). There was a significant difference in THC and heavy metals in soil (F8,63 = 2.04, P 8,63 = 247.0, P > 0.05). Concentration of THC and heavy metal was higher in plant than in soil. Reissantia indica, an aquatic weed, had the highest concentration of THC in root soil. A total of fifteen (15) weed species were identified, out of which Mariscus

关键词： Heavy Metals Mangro.e Weed So.l Species Diversity Sand Fill Swamp

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：