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太湖湖心区的痕量金属历史沉积过程研究
太湖 湖心区 重金属 沉积过程
2015/11/5
以太湖湖心区的沉积物为研究对象，解析了湖心区痕量金属的沉积通量年变化，探明了湖心区痕量金属的历史沉积情况．结果表明：湖心
区各样点沉积物的沉积速率从 １９５０ 年以前的（０．０３２±０．０２３） ｇ·ｃｍ
－·２
ａ
－１缓慢递增到 １９８０ 前后的（０．０７６±０．０３０） ｇ·ｃｍ
－·２
ａ
－１
，１９８０ 年后突增明
显，在 ２０００ 年后达到（０．１８５±０．１３２）...
Two ecological perspectives:Gibson vs.Shaw and Turvey.
对福州市 ２０ 个内河表层沉积物样品中的三氯生（ＴＣＳ）和甲基三氯生（ＭＴＣＳ）的含量进行了测定，并对其生态风险进行了评估．研究结果
表明，沉积物中 ＴＣＳ 和 ＭＴＣＳ 的含量范围分别为 １１．８～１２０．４ μｇ·ｋｇ
－１ 和未检出（ｎ．ｄ．） ～４１．７ μｇ·ｋｇ
－１
，平均含量分别为 ５０．１ μｇ·ｋｇ
－１ 和 ７．８
μｇ·ｋｇ
－１
．沉积物中 ＴＣＳ 总量和...
吉林省辽河流域生态系统服务价值对LUCC的响应分析
吉林省 辽河流域 生态系统服务价值
2015/8/10
基于 １９８９ 年和 ２０１２ 年 Ｌａｎｄｓａｔ ＴＭ／ＥＴＭ 遥感影像解译数据研究了吉林省辽河流域土地利用变化特征，应用 Ｃｏｎｓｔａｎｚａ 生态系统服务价值
计算方法，估算了 ２３ａ 间研究区生态系统服务价值，分析土地利用变化对生态系统服务价值的影响．研究结果表明，１９８９—２０１２ 年辽河流域土
地利用／ 植被覆盖发生了大幅变化，耕地、居民用地分别增加 ２０．２８％和 ７．０９％，其增...
The bountiful natural resources of the Northeast Pacific (NEP) long sustained thriving populations of native peoples. The central importance of salmon, halibut, marine mammals, seabirds and other spec...
The Emergence of Symbiotic Groups Resulting From Skill-Differentiation and Tags
emergence symbiosis groups tags artificial life complementarity predetor-prey dynamics simulation
2015/7/30
The paper presents a evolutionary simulation where the presence of ‘tags’ and an inbuilt specialisa-tion in terms of skills result in the development of ‘symbiotic’ sharing within groups of individual...
Wharton is a zoologist who began his career with studies of parasitic nematodes. The free-living stages of parasitic nematodes possess "extraordinary abilities" (p. ix) to tolerate freezing, desiccati...
An Imaginary Open Letter to the U.S. Commission on Ocean Policy
collect data resource management
2015/7/30
As you read this, your report to the U.S. Congress, President and populace is being finalized. The numbers and statistics, alone, are impressive: thousands of hours of testimony, hundreds of pounds of...
Building on Fisheries Acoustics for Marine Ecosystem Surveys
Marine Ecosystem Surveys Fisheries
2015/7/20
The National Oceanic and Atmospheric Administration Marine Fisheries Service endeavors to manage fish stocks with an ecosystem perspective. This objective requires an understanding of the effects of t...
Developing Ecosystem Indicators for Responses to Multiple Stressors
Multiple Stressors Developing Ecosystem
2015/7/20
Human activities in coastal and marine ecosystems provide a suite of benefits for people, but can also produce a number of stressors that can act additively, synergistically, or antagonistically to ch...
The Roles of Large Top Predators in Coastal Ecosystems: New Insights from Long Term Ecological Research
New Insights Long Term Ecological Research
2015/7/16
During recent human history, human activities such as overhunting and habitat destruction have severely impacted many large top predator populations around the world. Studies from a variety of ecosyst...
Submarine hydrocarbon seeps are geologically driven “hotspots” of increased biological activity on the seabed.
As part of the HERMES project, several sites of natural hydrocarbon seepage in the Euro...
Biodiversity of Cold Seep Ecosystems Along the European Margins
European Margins Ecosystems Along
2015/7/3
During the European Commission’s Framework Six Programme, HERMES, we investigated three main areas along
the European margin, each characterized by the presence of seep-related structures exhibiting...
In Situ Technologies for Studying Deep-Sea Hotspot Ecosystems
Deep-Sea Hotspot Ecosystems Technologies
2015/7/3
Cold seeps, hydrothermal vents, deep water coral reefs, and submarine canyon systems are hotspot habitats characterized by intermediate to high fluid
advection. They are shaped by a complex interpla...
Day and night warming have different effect on root lifespan
Day night warming different effect root lifespan
2015/2/5
Roots are key components of C cycling in terrestrial ecosystems and play an important role in the regulation of response of terrestrial ecosystems to global climate warming, which is predicted to occu...