(Table 1) Number of invertebrate species per bottom trawl haul in the Kapp Norvegia to Halley Bay area on cruise EASIZ I (ANT-XIII/3) and in the Kapp Norvegia - Austasen area on cruise EASIZ III (ANT-XVII/3)

Ecological work carried out on the Antarctic and Magellan shelves since the first IBMANT conference held at the UMAG, Punta Arenas in 1997 is summarized to identify areas where progress has been made and others, where impor- tant gaps have remained in understanding past and present interaction between the Antarctic and the southern tip of South America. This information is complementary to a review on shallow-water work along the Scotia Arc (Barnes, 2005) and recent work done in the deep sea (Brandt and Hilbig, 2004). While principally referring to shipboard work in deeper water, above all during the recent international EASIZ and LAMPOS campaigns, relevant work from shore stations is also included. Six years after the first IBMANT symposium, significant progress has been made along the latitudinal gradient from the Magellan region to the high Antarctic in the fields of biodiversity, biogeography and community structure, life strategies and adaptations, the role of disturbance and its significance for biodiversity, and trophic coupling of the benthic realm with the water column and sea ice. A better understanding has developed of the role of evolutionary and ecological factors in shaping past and present-day environmental conditions, species composition and distribution, and ecosystem functioning. Furthermore, the science community engaged in unravelling Antarctic-Magellan interactions has advanced in methodological aspects such as new analytical approaches for comparing biodiversity derived from visual methods, growth and age determination, trophic modelling using stable isotope ratios, and molecular approaches for taxonomic and phylogenetic purposes. At the same time, much effort has been invested to complement the species inventory of the two adjacent regions. However, much work remains to be done to fill the numerous gaps. Some perspectives are outlined in this review, and sug- gestions are made where particular emphasis should be placed in future work, much of which will be developed in the frame of SCAR's EBA (Evolution and Biodiversity in the Antarctic) programme.

本文总结了1997年于蓬塔阿雷纳斯的UMAG举办首届IBMANT研讨会以来，针对南极陆架与麦哲伦陆架开展的生态研究工作，旨在明确当前在南极与南美南端之间过去与现今相互作用的研究中，已取得进展的领域与尚存重大认知空白的领域。本综述内容可作为对斯科舍弧（Scotia Arc）浅水环境研究综述（Barnes, 2005）及深海最新研究（Brandt与Hilbig, 2004）的补充。尽管本文主要聚焦于深水海域的船基研究——尤其是近期开展的国际EASIZ与LAMPOS科考航次——但也纳入了岸基站点的相关研究工作。首届IBMANT研讨会举办六年后，从麦哲伦区域至南极高纬区域的纬度梯度研究中，我们在生物多样性、生物地理学、群落结构、生活策略与适应性、干扰作用及其对生物多样性的意义，以及底栖生境与水柱、海冰之间的营养耦合等领域取得了显著进展。我们对演化与生态因子在塑造过去与现今的环境条件、物种组成与分布，以及生态系统功能中所扮演的角色有了更深入的认知。此外，致力于阐明南极与麦哲伦区域相互作用的科研群体，在方法论层面取得了进展：例如用于对比视觉调查法获取的生物多样性数据的新型分析方法、生长与年龄测定技术、基于稳定同位素比值的营养模型构建方法，以及用于分类学与系统发育研究的分子生物学手段。与此同时，科研人员已投入大量精力以完善这两个相邻区域的物种名录。然而，仍有大量工作需要开展以填补诸多现存的研究空白。本综述概述了若干研究展望，并提出了未来研究应重点关注的方向，其中多数研究将在南极研究科学委员会（SCAR）的EBA（Evolution and Biodiversity in the Antarctic，南极演化与生物多样性）计划框架下开展。