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1.
报道了１９９０年５月－１９９１年２月在海坛岛潮下带进行棘皮动物调查的结果,调查区有棘皮动物３８种,平均生物量和栖息密度分别为６．６ｇ／ｍ＾２和２０个／ｍ＾２,生物量和密度分布调查区北面高南面低。并讨论了调查区棘皮动物的种类组成,分主季节 变化等特点。 相似文献
2.
台湾海峡中,北部的蟹类 总被引：3，自引：0，他引：3
本文根据我所1983年5月至1984年5月台湾海峡中、北部海洋综合调查资料进行研究,结果表明,本区蟹类已鉴定到种的有112种,其中以梭子蟹科(30种)、玉蟹科(25种)和长脚蟹科(23种)占优势,优势程度较高的种类依次为红色相机蟹、双斑(虫寻)、模糊新短眼蟹和刺足掘沙蟹。全区蟹类平均生物量和栖息密度分别为1.55g/m~2和13个/m~2,其分布以近岸水域高于调查区东侧水域;在季节变化上以秋季最高,冬季最低;细颗粒沉积区蟹类生物量高,粗颗粒沉积区种数较丰富。 相似文献
3.
南黄海夏季大型底栖动物分布现状 总被引：6，自引：0，他引：6
2006年夏季(7-8月)在南黄海进行的调查中,共鉴定出192种大型底栖动物,其中多毛类环节动物122种、甲壳动物22种、软体动物33种、棘皮动物8种、其它门类7种,优势种主要为小头虫科(Capitellidae)、掌鳃索沙蚕(Ninopalmate)、圆楔樱蛤(Cadella narutoensis)、日本鼓虾(Alpheus japonicus)、紫蛇尾(Ophiophplis mirabilis)、安岛反体星虫(Phascolosoma onomichianum)等20多种.大型底栖动物的平均栖息密度为102 ind.·m-2,其中多毛类为57 ind.·m-2、甲壳动物为12 ind.·m-2、软体动物为24 ind.·m-2、棘皮动物为6 ind.·m-2;大型底栖动物的平均湿重生物量为29.30 g·m-2,其中多毛类11.98 g·m-2、甲壳动物2.20 g·m-2、软体动物5.56 g·m-2、棘皮动物4.85 g·m-2.在南黄海西部32°30′～36°00′N的较浅水域,大型底栖动物栖息密度和生物量较高,而南黄海中部深水区大型底栖动物栖息密度和生物量较低.与2000年夏季调查结果相比,大型底栖动物平均栖息密度偏低,平均生物量相近;与1959年全国海洋综合调查夏季的数据相比平均生物量稍低,但多毛类生物量明显偏大,软体动物生物量偏低. 相似文献
4.
本文研究了福建长乐国际机场附近漳港沙滩潮间带的生态。结果表明，该区生物６０种。其中，多毛类动物１９种，软体动物２４种，甲壳动物１１种，棘皮动物２种，其他动物４种；种类性质以热带，亚热带种占优势。平均生物量４．３４ｇ／ｍ＾２，平均栖息密度１５个／ｍ＾２。数量以中潮区较大。群落结构不大稳定，初步认为与沙滩特殊生境有关。 相似文献
5.
6.
浙江苍南泥相潮间带春末底栖动物生态特征 总被引：1，自引：0，他引：1
通过2003年6月对鳌江口南侧苍南县3条泥相潮间带断面的调查分析,鉴定出潮间带底栖动物74种,其中多毛类8种,软体动物24种,甲壳动物26种,棘皮动物1种,其他类动物15种。平均生物量和栖息密度分别为103.74 g/m2,667个/m2,软体动物和甲壳动物可占总生物量的72%和15%,断面数量平面分布为巴曹>白沙>海城,垂直分布中潮区>高潮区>低潮区,多样性指数H′值北侧白沙断面(1.82)大于南侧巴曹断面(1.61),均匀度J值中间海城断面为最大(0.72),调查区域北端鳌江淡水注入和南端外侧琵琶山阻挡,海流及潮汐的作用影响不一,致使该区潮间带动物种类和数量在南北断面间有较大差异。 相似文献
7.
渤海大型底栖动物丰度和生物量的研究 总被引：4，自引：2，他引：4
于 1997年 6月、1998年 9月和 1999年 4月 3个航次对渤海的大型底栖动物进行了定量研究。在研究海区共采到大型底栖动物 30 6种 ,其中甲壳动物 97种 ,环节动物 95种 ,软体动物 88种 ,棘皮动物 11种 ,其它动物共 15种。其总平均丰度和生物量分别为 2 5 76 ind./m2和4 4 .4 7g/m2。渤海大部海区的总平均生物量在过去十年中可能未发生大的变化。渤海含砂量相对高的生境有较高的动物丰度 ,而在水位较深的水域 ,由于有较高的初级生产量到达底部 ,从而支持着较高的大型底栖动物的生物量。渤海海峡口可能是渤海大型底栖动物生物量的高值区 相似文献
8.
我所于1981年12月—1982年7月对南海东北部海区(112°30′—119°E,18°—23°N)进行了海洋综合调查(站位见图1),所获棘皮动物标本共计6615个,经初步鉴定为67种,分隶于5纲,12目,27科,48属,其中未定种及我国过去尚未报道过的新纪录有28种(这些种类有待于继续研究和今后专题论述)。本文仅阐述南海东北部海区棘皮动物的分布概况。 相似文献
9.
三亚蜈支洲岛珊瑚礁-沙质底复合区棘皮动物群落结构 总被引：5，自引：1，他引：4
本文以海南省三亚市蜈支洲岛典型珊瑚礁区为研究区域,于2018年8月和11月、2019年1月和4月采用样带法调查浅水区和深水区棘皮动物群落多样性,研究不同季节和深度对棘皮动物群落结构特征的影响,并依此指示珊瑚礁生态系统健康状况和受干扰程度。结果显示,共发现15种棘皮动物,其中优势种有8种,分别为黑海参Holothuriaatra、红腹海参Holothuriaedulis、黄疣海参Holothuria hilla、绿刺参Stichopus chloronotus、刺冠海胆Diadema setosum、许氏大羽花Comanthina schlegeli、本氏海齿花Comanthus bennetti和吕宋棘海星Echiaster luzohicus。春季棘皮动物种类最多,棘皮动物栖息密度呈现出春夏高、秋冬低的规律。不同水深区域棘皮动物种类组成大致相同,深水区棘皮动物栖息密度高于浅水区,但差异不显著。全年棘皮动物物种丰富度指数、多样性指数和均匀度指数分别为1.2±0.10、2.5±0.12和0.66±0.040。对比研究表明,蜈支洲岛海域棘皮动物种类远多于三亚其他海域,但稍低于南海岛礁(如渚碧礁)海域。根据Shannon-Wiener指数分级评价标准,蜈支洲岛海域棘皮动物平均多样性指数为2.5,介于2与3之间,属于轻度的人为干扰。综上所述,蜈支洲岛海域珊瑚礁生态系统保护效果明显。 相似文献
10.
本文根据１９９５年的调查，报道了九龙江口外浯屿海域底栖生物的种类组成与数量分布。结果表明，本区底栖生物种类较丰富，组成以多毛类，甲动物，软体动物和棘皮动物为主。底栖生物数量较大，平均栖息密度为３００个／ｍ＾２，平均生物量为３１．０３ｇ／ｍ＾３，数量分布较不均匀。． 相似文献
11.
The analysis of the structure of the cryolithozone, facies, and thicknesses of the Quaternary sediments and the results of the physicochemical mathematical modeling of the modern shelf of the western part of the Laptev Sea support the influence of the Late Pleistocene glaciations on the heat conditions and the distribution of the permafrost in the area. A ～200-m thick glacier formed under aerial conditions from atmospheric precipitation represented the metamorphosed snow cover. According to the modeling, the long-living (from 60?50 to 10?4 ky) glacier reduced the thickness of the permafrost rocks in the reviewed shelf area for 280–360 m. The Holocene marine transgression additionally decreased the thickness from 50–140 m on the inner shelf to 220–350 m on the outer shelf. The modern submarine cryolithozone 450-0 m thick is wide-spread in the studied region from the coast to the shelf boundary (isobaths of 130–140 m), where it pinches out at a distance of ～380 km from the coast at a depth of ～250 m above the sea level. 相似文献
12.
We analyze the components of the carbon system of the Sevastopol bay waters and the balance of main sediment-forming substances
using the data of field investigations in 1998–2008. The interannual variations of total inorganic carbon and the equilibrium
partial pressure of carbon dioxide in the bay water are noted. An increase in the flux of carbon dioxide into the bay and
in the content of organic carbon in bottom sediments is revealed, and an explanation of this phenomenon is given. The priority
accumulation of organic carbon in the sediments of the bay is established. We assess the interannual variation in the relative
abundances of organic and inorganic carbon as an index of the carbon cycle stability. 相似文献
13.
We generalize and analyze the state of investigations of the influence of river waters on the hydrologic structure of the
Black Sea. Specific features of the water, regime and hydrography of rivers flowing into the sea, data on the discharge of
rivers, and intrayear and interyear variability of the discharge are presented. We discuss and analyze works studying the
transformation of river waters, routes of desalinized sea waters, and their influence on the thermohaline structure and dynamic
regime of the sea.
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
14.
双壳贝类血淋巴中儿茶酚胺的检测方法初步研究 总被引：1，自引：0，他引：1
研究的目的是探索一种检测双壳贝类血淋巴中儿茶酚胺含量的方法。以栉孔扇贝(Chlamysfarreri)和长牡蛎(Crassostreagigas)为实验对象,研究了取样、抗氧化剂、氧化铝用量以及Tris缓冲液用量等对实验结果的影响。结果表明,高效液相色谱电化学检测器法(HPLC-ECD)可以灵敏高效地对双壳贝类血淋巴中儿茶酚胺进行定性、定量检测。实验表明,取样时间最长不超过1.5min;还原性谷胱甘肽作抗氧化剂效果较好;前处理各试剂与血样量的最适配比为血样量1.5mL,Tris缓冲液(1.5mol/L,pH8.6)1mL和氧化铝25mg;水洗后离心并尽可能吸干氧化铝中的水分。去甲肾上腺素、肾上腺素和多巴胺的回收率分别为53%~69%、47%~73%和48%~56%。 相似文献
15.
为研究黄河入海径流变化条件下河口附近海域盐度扩散特征,以更好地保护河口海域生物资源多样性,本文以黄河下游利津水文站的长序列实测径流数据资料为基础,利用近海水动力模型FVCOM,分析径流变化对黄河口海域盐度的影响规律。结果表明：黄河口与莱州湾之间存在顺时针的环流系统,在余流作用以及涨落潮方向的影响下,黄河冲淡水长期向莱州湾扩散;丰水期黄河冲淡水几乎影响了整个莱州湾,27盐度锋可以到达莱州湾中部,27等盐线的表层包络面积为2 665.61 km2,占莱州湾的1/4左右,枯水期低盐度水只有向南扩散的趋势,27以下的低盐度水集中分布在黄河口门附近,27等盐线的表层包络面积只有199.65 km2;5月份,随着入海径流量增加,27等盐线扩散的范围、距离、方向都会发生明显变化。在对近海生物资源有迫切保护需求的情景下,适当减少其他用水户供水量以增加入海生态径流量,可以有效改善黄河口海域附近的盐度情况,为生物资源的生长繁殖创造良好条件。 相似文献
16.
V. A. Ivanov S. P. Lyubartseva N. Mikhailova N. B. Shapiro 《Physical Oceanography》2001,11(6):509-524
We analyze the results of numerical calculations performed according to the three-dimensional interdisciplinary model of an
ecological system of the Black-Sea shelf zone near the estuary of the Danube. The complete system of equations of hydrothermodynamics
is solved together with transport equations of the advection-diffusion-reaction type used to describe the transformation of
a substance (nitrogen) between the components of the characteristic vectors of the ecosystem: plankton, detritus, and biogenic
elements (nitrates). We describe the distinctive features of the circumcontinental distribution of components obtained as
a result of numerical experiments and present arguments for the conclusion that the ecosystem of the Danube estuary water
area plays the role of a buffer zone between the press of the Danubian biogenic pollutions and the neighbouring areas of the
shelf zone and open sea.
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
17.
The authors have previously determined that the effectiveness and failure pattern of the ice cover caused by flexural-gravity waves generated by a submerged body motion near the bottom ice can greatly depend on the depth of the water area. In its turn, the presence of a ledge on the ice surface may affect a wave propagation pattern. This paper presents an experimental study of the bottom contour influence on the deflection and length of flexural-gravity waves. The authors describe a numerical model for the analysis of the deformed state of ice caused by hydrodynamic loads due to a submarine motion, taking into account the bottom contour. The experiments are carried out in the ice tank. The results of calculations and experiments are compared. 相似文献
18.
Relationship between the path of the Kuroshio in the south of Japan and the path of the Kuroshio Extension in the east 总被引：2，自引：0，他引：2
A relationship between paths of the Kuroshio and Kuroshio Extension (KE) is investigated, using the satellite-derived altimetry
dataset of 1993–2008. When the Kuroshio takes the nearshore nonlarge meander path or typical large meander path and resultantly
goes through the deeper channel (about 2500 m) of the Izu-Ogasawara Ridge, the KE path adopts a relatively stable state with
the two quasi-stationary meanders. On the other hand, when the Kuroshio takes the offshore nonlarge meander path and then
passes over the shallower part of the Ridge (about 1000 m), the KE path tends to be convoluted, i.e., an unstable state. 相似文献
19.
Ten years of semistationary studies of the interaction of the ice cover and the coastal relief of the Kandalakhsa Gulf in the White Sea allowed us to reveal the peculiarities of these processes in the warm and cold years and the mechanisms of the origination of ice forms, including ice tents, which govern the character of the tidal flats. Three dynamic fast ice zones are distinguished by their geomorphological location, morphology, and ice dynamics. The dependence of the mechanisms and volumes of the enrichment of the fast ice in the sediments on the coastal zone??s relief was established. At the coast of the Kindo Peninsula (Velikaya Salma Strait), the ice mostly contains fine-sandy sediments. Coarser sediments, including boulders, are occasional and frozen into the ice at the contact of the fast ice and the bottom. At the expense of the ice??s spreading by 4?C6 times in the warm years and 2?C4 times in the cold years, several thousand tons of sediments mostly from the tidal flat??s surface (100?C700 m3 from 1 km of coast in the wide tidal flats and <50 m3 on the steep coasts) are delivered to the water area. 相似文献
20.
The methodology and the first results of the computations of the volumes, masses, and growth rates of the sedimentary body of the buried Black Sea basin are presented. Their temporal evolution reflects the regional paleogeodynamics, in particular, the reorientation of the vector of the relative movement of the Arabian and Eurasian lithospheric plates and the related intensification of their collision in the late Miocene-Pliocene. 相似文献