Coral Recruitment and Regeneration on a Maldivian Reef Four Years after the Coral Bleaching Event of 1998. Part 2: 2001–2002     

Karen Loch  Wolfgang Loch  Helmut Schuhmacher  & Wolf R. See 《Marine Ecology》2004,25(2):145-154

Abstract.  This paper is the follow-up study to a quantitative inventory of stony corals on a Maldivian reef after the bleaching event of 1998 [Loch, K., W. Loch, H. Schuhmacher & W. R. See, 2002; P.S.Z.N.: Marine Ecology, 23 (3): 219–236] covering the years 2001 and 2002, thereby extending the observation period from 1999 to 2002. Data collection was performed as previously in transects on the reef flat, Acropora tables at the reef rim, Porites lobata blocks and one Diploastrea heliopora colony. While between 2000 and 2001 the transects showed a noticeable increase of living scleractinian colonies of 6.1 per m² of reef surface per year, this had slowed to 0.7 per m² per year by 2002. Likewise, the colonisation of dead Acropora tables had changed from a yearly increase of 14.4 colonies per m² of table surface between 2000 and 2001 to a decrease of 9.4 between 2001 and 2002. The main constituent of the regeneration in transects as well as on Acropora tables was Pavona (Agariciidae), whereas Pocilloporidae and Acroporidae were almost completely missing. A new immigrant was Tubastraea micranthus . Continuous growth of regenerates on Porites presented a columnar form, and the growth rate of D. heliopora was reduced between 2001 and 2002. The influence on reef ecology in terms of coral substrate, species differentiation, growth rate changes, interaction with other organisms and the overall prospect of the reef development on a longer timescale is outlined.  相似文献   

夏玉米田间生态系中系统间的相关分析     

李淑霞  冯瑞龙  赵继业  刘绍棣  程绍义 《中国海洋大学学报(自然科学版)》1988,(Z2)

作者应用典型相关分析,提出烟单14号夏玉米田间生态系各系统间的相关模型。结论是:播前土壤养分与植株体内养分的相关,主要表现在因果关系土壤中全氮的含量与小喇叭口期植株体内含氮和大喇叭口期体内含磷量的相关。施肥对植株体内养分的作用是在开花后才明显地显示出来的,主要表现在施氮肥促进开花后体内氮的增加、制约体内氮、磷含量的配合。影响产量的气象因素主要是开花前的光照时数和开花后的积温。  相似文献   

Deep-Sea Eukaryote Ecology of the Semi-Isolated Basins Off Japan     

Paul A. Tyler 《Journal of Oceanography》2002,58(2):333-341

The Japanese archipelago is surrounded by the Pacific to the east, the Okhotsk Sea to the north, the Sea of Japan to the west and the Okinawa Trough to the south. The last three seas form semi-isolated deep basins, all with potentially tectonic origin but a different primary energy source as well as hydrographic and faunistic history. The Okhotsk Sea is connected to the Pacific through the deep straits between the Kurile Islands. As a result much of the fauna has links with that fauna found at similar depths in the Pacific. By contrast, the Sea of Japan was isolated from the main Pacific during the last ice age and became anoxic. Even today the link is only through narrow shallow straits. As a result the fauna is impoverished and is believed to be composed of cold-adapted eurybathic species rather than true deep-sea species. The deep-water fauna of both these seas derive their energy from sinking surface primary production. The Okinawa Trough has a much younger tectonic history than the Okhotsk Sea or the Sea of Japan. In the Okinawa Trough the most noticeable fauna is associated with hydrothermal activity and chemosynthesis forms the base of the food chain for the bathyal community. The variable nature of these three basins offers excellent opportunities for comparative studies of species diversity, biomass and production in relation to their ambient environment. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   

南极中山站邻近区域麦氏贼鸥Catharactamaccormicki繁殖生态研究     

王自磐  Norm.  FI 《海洋学研究》1996,14(1):36-43

对中国南极中山站附近麦氏贼鸥繁殖种群的产卵、孵化和育雏等繁殖活动进行了系统的观察研究，记录产卵２１枚，育雏１８只，育成７只。第一卵的卵容量常大于第二卵，所需卵化时间通常长于后者，并使第一雏鸟在发育初期便处于有利地位；雏鸟成长常因缺少食物、气候恶劣以及敌害等夭折，尤其第二雏鸟的大量损失，使育成率低，仅为３８．９％。另外，人类活动对本区麦氏贼鸥繁殖习性和繁殖率所产生的影响不可忽视。  相似文献   

Trawl hangs, baby fish, and closed areas: a win-win scenario     

Link  Jason S; Demarest  Chad 《ICES Journal of Marine Science》2003,60(5):930-938

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The Benthic Phase of the Life Cycle of Penaeus semisulcatus De Haan (Crustacea Decapoda) along the Southeastern Coast of the Mediterranean     

M. Tom    A. Shlagman  CH. Lewinsohn 《Marine Ecology》1984,5(3):229-241

Abstract. Recruitment, migration, growth and longevity of populations of Penaeus semisulcatus along the southeastern coast of the Mediterranean were investigated. The general pattern of the life cycle of P. semisulcatus and the parameters affecting it were identified.
Relative population density, measured by catch per unit effort, as well as relative age estimated by age group body length were used to study the pattern of the benthic phase of the life cycle.  相似文献   

长江口及其附近海域细菌和三磷酸腺苷的分布特征   总被引：8，自引：0，他引：8  

史君贤  陈忠元  宁修仁  C.Courties  M.N.Hermin 《海洋与湖沼》1992,23(3):288-296

于1986年1月和7月在长江口及其附近海域进行了细菌的落射荧光直接计数和三磷酸腺苷(ATP)浓度的测定,同时取分样进行了微生物呼吸作用耗氧速率和叶绿素浓度的测定。结果表明,细菌数量和ATP浓度夏季较冬季高,总的分布趋势是,高值区出现在内河段和长江口,向外海逐渐降低;细菌数同悬浮体浓度、硝酸盐浓度和耗氧速率呈正相关,与盐度呈负相关。冬季,在整个海域细菌是ATP的主要贡献者和溶解氧的主要消耗者;夏季,沿冲淡水方向ATP出现两个峰值,第一峰值出现在长江口的最大浊度带,由细菌所贡献;第二个出现在盐度25—30的区域,由浮游植物所贡献。呼吸作用耗氧速率也呈现了与ATP相似的分布特征。  相似文献   

Landscape ecology of interactions between seagrass and mobile epifauna: The matrix matters   总被引：1，自引：0，他引：1  

Jason E. Tanner   《Estuarine, Coastal and Shelf Science》2006,68(3-4):404

There is increasing interest among ecologists about how the type of matrix surrounding a habitat patch influences the organisms living in that patch. This question is virtually unstudied in marine systems. In this paper I show that the mobile faunal assemblage in seagrass patches does depend on the surrounding matrix. Faunal assemblages in patches of Posidonia surrounded by sand are different than in those surrounded by Heterozostera, another seagrass, having more than double the abundance of both amphipods and polychaetes. However, the differences are not simply due to spillover from the matrix habitat, but rather are an emergent property of the patch context that cannot be predicted. Posidonia surrounded by sand actually has an assemblage that is intermediate between Heterozostera and Posidonia surrounded by Heterozostera. Differences in habitat structure do not account for this pattern, as seagrass biomass did not vary, and the same result was found in artificial seagrass. The faunal assemblage did not vary depending on the location within the patch (edge or centre) for Heterozostera, Posidonia or artificial seagrass. Patch size, however, did have an effect for Heterozostera, with smaller patches having 2–3 times as many isopods per sample as large, but less than half the number of some amphipod families. These results suggest that the landscape context is as important in marine systems as it is known to be in terrestrial systems.  相似文献   

海洋动植物引种与海洋生态保护   总被引：7，自引：1，他引：7  

杨圣云  吴荔生  陈明茹  周秋麟 《台湾海峡》2001,20(2):259-265

本文讨论了海洋动植物的分布、生物地理区系、外来物种引进海域的方式、外来物种地当地动植物的影响以及对当地海洋生态系统的影响，从保护海洋生态系统的角度提出了加强对海洋动植物引种管理的法律和政策措施。  相似文献   

Biometric and Genetic Analysis of the Marine Rissoid Rissoa auriscalpium (Gastropoda, Prosobranchia) and its Ecological Implications     

Rita  Colognola  Pietro  Masturzo  Giovanni Fulvio  Russo  Mlchele  Scardi  Daniele  Vlnci Eugenio  Fresi 《Marine Ecology》1986,7(3):265-285

Abstract. Two forms of Rissoa auriscalpium were found in Posidonia oceanica beds around the Island of Ischia (Gulf of Naples). In order to investigate their taxonomical value and to quantify the discriminating features found, the radular, conchometric, genetic, and ecological features of the two forms were analyzed. Ecological observations showed that the distribution of the two forms is strongly correlated with hydrodynamic factors.  相似文献