查询词典 demersal

The results showed demersal biological resources in summer were richer than that in spring as well as diversity index of the community.

更多3.97、2.743、0.76。结果表明，夏季底层生物资源较春季丰富，渔业生物群落的多样性指数也较春季高。

East China Sea ; Huanghai Sea ; demersal fish ; structure of community ; seasonal dynamics

东海；黄海；底层鱼类；群落结构；季节变化

Females lay spherical, demersal, adhesive eggs singly or perhaps in small clumps.

女性蛋球、底层、胶单个或可能在小的前面。

Based upon stomachs collected from the north Yellow Sea during autumn in 2007, feeding ecology of Liparis tanakae was investigated. The results showed that shrimps and demersal fishes were the most important preys of L.

根据2007年秋季在黄海北部海域进行的定点底拖网调查，对细纹狮子鱼的摄食生态进行了初步研究。

Based on otter trawl catch rates of five surveys conducted by South China Sea Fisheries Research Institute from 1961 to 1999, changes in demersal trawling fishery resources in the northern South China Sea were analyzed.

利用1961~1999年期间南海水产研究所5次渔业资源调查的底拖网渔获率数据，分析了南海北部底拖网渔业资源的数量变动。

Based upon stomachs collected from the north Yellow Sea during autumn in 2007, feeding ecology of Lophius litulon was investigated. The results showed that demersal fishes and shrimps were the most important prey groups of L.

根据2007年秋季在黄海北部海域进行的定点底拖网调查，对黄鮟鱇的摄食生态进行了初步研究。

Based on monthly fishery resources investigation data of demersal trawl from 1986~1987 in the Pearl River Estuary and adjacent waters,the paper quantitatively analyzed variation of fish community of various species by cluster analysis and principal coordinates analysis of a package of MVSP.

根据1986~1987年珠江口及其邻近水域渔业资源的周年月份调查数据，运用MVSP软件包中的聚类分析和主坐标分析对珠江口鱼类群落的时空变化进行定量分析，描述珠江口鱼类群落的季节变化和区域变化特征，把珠江口从时空上划分为4个季节和5个水域，并与传统的划分方法作比较，讨论了这种分析结果的合理性。

Community ; Index of similarity ; Index of diversity ; Cluster analysis ; Dendrogram ; Demersal fish ; Deep sea ; East China Sea

群落；相似性指数；多样性指数；聚类分析；树状图；底层鱼类；深海；东海

Benthos feeders were bottom-dwelling or demersal species.

食底栖动物的鱼类，主要是一些底层和近底层鱼类。

The results suggest that policy simulation aimed to maximize the economic will increasing all fishing effort of all fishing sector except demersal trawl should be reduced 43.2%, and social strategy were suggested increasing small-scale fishing effort to satisfy social benefits, especially for miscellaneous will increase 3.48 times on current level, maximize ecological suggested all fishing sector should be reduced drastically or stop.

结果表明：以经济利益最大化为管理策略时会提高所有渔具的捕捞努力量，除了拖网下降43.2%之外；以社会利益最大化为管理策略时模型要求极大地增加小型渔业，尤其是混合渔业的捕捞努力量将上升3.34倍；而以生态稳定性最大化为管理目标时，模型要求所有渔业的捕捞努力量都必须降低甚至停止。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。