“竹蜓”还是“虫筳”

文章介绍了已灭绝的一类有孔虫动物fusulinid的中文译名的沿革、中文译名使用混乱的原因及现状,并提出了意见和建议。     

山东沿海潮间带底栖海藻的主要种类及其生境和分布

对山东近海的自然条件及潮间带底栖澡类植物的主要种类及其生境和分布状况等问题作概要的报告和分析．     

Shifts of the Kuroshio axis over the last 20 000 years

Core 255 from the southern Okinawa Trough was selected to monitor the shift of the Kuroshio axis over the last 20 000 years. During the last glacial maximum the Kuroshio axis had ever shifted outside the Okinawa Trough. It entered the Okinawa Trough again at about 6 500 a BP, leading to abrupt increase of sedimentation rate, distinctly coarser sediment and remarkably increased abundance of foraminiferal indicators of the Kuroshio in the core. But, during about 4 000-3 000 a BP the abundance of the Kuroshio indicatorPulleniatina obliquiloculata sharply decreased again, indicating that the Kuroshio axis had ever shifted casterly for a short period or the Kuroshio was weakened and that moment.     

黄河兰州段大型底栖无脊椎动物调查

１９９０－１９９４年春、秋两季采样，研究了黄河兰州段的大型底栖无脊椎动物，从５个采样点中共获得样本５１３６尾，经鉴定属于４个纲、３９种（属）其中Ｎａｎｏｃｌａｄｉｕｓ ｂｉｃｏｌｏｒ（幼虫）系黄甘肃段新纪录种。     

Characteristics of Uvigerina in the Northwestern Indian Ocean: Paleo-environmental implications

Coretop sediment samples covering water depth from 247 to 1474 m in the Northwestern Indian Ocean were analyzed. 6 species of Uvigerina among 77 species and 11 species-complexes were found in all 26 samples. They are Uvigerina auberiana d'Orbigny, Uvigerina hispida Schwa-ger, Uvigerina peregrina Cushman, Uvigerina proboscidea Schwager, Uvigerina spinicostata Cushman and Jarvis, and Uvigerina sp. Characteristics of Uvigerina are (1) high abundance due to rich food supply and less competitors; (2) low diversity because only those eurytopic / opportunistic forms can survive environment of low dissolved oxygen value; (3) various test shapes and ornamentations which are controlled by respiration or gas exchange of the cell; and (4) abundance of Uvigerina is well related with environmental factors such as water depth, oxygen content and productivityor food supply. These Uvigerina species can be used as pa-leo-environmental proxy of low oxygen and rich organic matter supply related to high-surface productivity upwelling caused by Indian monsoons. Analysis of Uvigerina in Hole 723B of ODP Leg 117 showed that upwelling was intensified 9, 18, 50, 100, 200, 240, 340, 440, 480, 600 and 700 ka ago, which implies the increasing in global changes effect from the uplift of the Tibetan Plateau.     

北麂列岛岩相潮间带底栖动物的种类分布

对北麂列岛岩相潮间带底栖动物的种类分布的研究结果表明：种类的水平分布主要受海岸开敞度的影响;垂直分布主要受潮汐和浪击度的影响,不同潮区的种类数为低潮区＞中潮区＞高潮区;季节变化与温度有关。     

Construction of habitat suitability models （HSMs） for benthic macroinvertebrate and their applications to instream environmental flows： A case study in Xiangxi River of Three Gorges Reservior region, China

Based on a long-term ecological monitoring,the present study chose the most dominant benthic macroinvertebrate(Baetis spp.)as tar-get organisms in Xiangxi River,built the habitat suitability models(HSMs)for water depth,current velocity and substrate,respectively,which is the first aquatic organisms model for habitat suitability in the Chinese Mainland with a long-term consecutive in situ measurement.In order to protect the biointegrity and function of the river ecosystem,the theory system of instream environmental flow should be categorized into three hierarchies, namely minimum required instream flow(hydrological level),minimum instream environmental flow(bio-species level),and optimum instream environmental flow(ecosystem level).These three hierarchies of instream environmental flow models were then constructed with the hydropogical and seighted usable area(WUA)method.The results show that the minimum required instream flow of Yiangxi River calculated by the Tennant method(10% of the mean annual flow)was 0.615m3s-1;the minimum instream environmental flow accounted for 19.22% of the mean annual flow(namely 1.182m3s-1),which was the damaged river channel flow in the dry season;and 42.91% of the mean annual flow(namely 2.639m3s-1)should be viewed as the optimum instream environmental flow in order to protect the health of the river ecosystem,maintain the instream biodiversity,and reduce the impact of small hydropower stations nearby the Xiangxi River.We recommend that the hydrological and biological methods can help establish better instream environmental flow models and design best management practices for use in the small hydropower station project.