搜索结果: 166-180 共查到“知识库 海洋科学”相关记录8818条 . 查询时间(2.935 秒)
水东湾春、秋季浮游植物群落结构特征
水东湾 浮游植物 丰度 生物多样性
<
2015/12/9
根据2013年4月和10月2个航次的调查数据，对水东湾海域浮游植物种类组成、时空分布及多样性等群落特征进行了分析。共鉴定浮游植物4门69种，其中硅藻类59种，占85.51%；甲藻类8种，占11.59%；蓝藻和金藻类各1种，分别占1.45%。浮游植物丰度秋季（203.10×104个•m-3）是春季（22.89×104个•m-3）的8.87倍；春季湾外各站位高，秋季则湾内高。水...
根据2011年广西钦州茅尾海丰水期和枯水期2次渔业资源调查的资料，分析了该海域游泳动物的种类组成及其资源密度的分布。结果表明，该水域共有游泳动物113种，分隶于19目54科86属，其中鱼类76种，占总种数的67.26%，分隶于13目39科65属。甲壳类29种，占总种数的25.66%，隶属于2目10科15属。头足类7种，占总种数的6.20%，隶属于3目4科5属。肢口类1种，占总种数的0.88%，分隶...
根据2013年夏季黄海南部和东海近海（23.5°N~35.0°N，117.5°E~125.5°E）的浮游生物生态调查资料，研究了该区域浮游动物的群落分布格局及其特征。结果表明，全海域浮游动物种类共有7门16类252种（不含58种浮游幼体）。用聚类分析法可将该海域的浮游动物分为6个群落，不同群落关键种生态特征差异明显。群落Ⅰ的优势种为背针胸刺水蚤（Centropages dorsispinatus）...
于2012年12月~2013年9月对澳门4个典型湿地的大型底栖动物群落结构进行了研究。调查共鉴定出底栖动物66种，其中环节动物9种、软体动物45种、甲壳动物8种、鱼类3种。底栖动物种类组成具有河口低盐种、半咸水种和淡水种共存的特点；从物种生活型组成来看，底内型占据优势；从功能群组成来看，浮游生物食性和植食性底栖动物占据优势。最多的物种数出现在莲花大桥滩涂（46种），物种数于采样点间差异显著。沼蛤（...
What a magnificent opportunity for ocean sciences education! Or so it seemed. It came with the findings reported by the National Center for Education Statistics in 1999 by William J. Hussar (NCES 1999...
Intense Benthic Grazing on Phytoplankton in Coral Reefs Revealed Using the Control Volume Approach
Coral Reefs Revealed Control Volume Approach
<
2015/8/5
What is our international investment in oceanography, and how has it changed over the years? Two seemingly simple questions that have daunted our community repeatedly. The first of these two questions...
Extracting the broader lessons concerning climate impacts on marine ecosystems from regional studies in the Northwest Atlantic, Northeast Pacific, and Southern Ocean will be the central challenge faci...
Periodically, the ocean sciences community undertakes a serious contemplation of past accomplishments and future efforts and research directions. These reviews have produced a few landmark publication...
Coastal and Estuarine Studies: Coastal Ocean Prediction
Coastal Ocean Prediction Estuarine Studies
<
2015/8/5
Christopher Mooers' introduction collection of papers opens by succinctly stating that there is an explosion of interest in the coastal ocean. Every one of the 20 papers introduces its subject with th...
A Coastal Vision
Coastal Vision conditions
<
2015/8/5
A routine measurement system for the coastal ocean, tightly knitted with a communications, modeling and interpretation system, will deal with a range of problems that are important to our society. The...
Roll the clocks back several centuries and you'll find some outstanding examples of coastal observing systems, fully integrated with the needs and operations of the societies of the times.Several cent...
Seasonality and Distribution of Whale Calls in the North Pacific
North Pacific Whale Calls
<
2015/8/5
Most descriptions of sounds produced by whales at sea have been described from scattered, unsystematic observation and recording of animals during shipboard encounters. Such encounters provide data on...
Data assimilation is the process of combining our knowledge of a system, including both observations and dynamics, to produce estimates of the state of a system. The state of a system, or state variab...
Towards a US GOOS: A Synthesis of Lessons Learned from Previous Coastal Monitoring Efforts
Lessons Learned Previous Coastal Monitoring
<
2015/8/5
The Global Ocean Observing System (GOOS) is an international initiative to collect, distribute, and exchange oceanographic data on a routine, long-term, systematic basis. Many of the programs that wil...
Coastal Ocean Modeling: Processes and Real-Time Systems
Coastal Ocean Modeling Real-Time Systems
<
2015/8/5
The coastal oceans are among the most challenging marine environments in the world. They are subject to the combined geometrical constraints of irregular coastlines and highly variable (steep and tall...