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1.
Mar Pollut Bull ; 119(2): 23-32, 2017 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-28351664

RESUMO

Yellow River delta (YRD) is a typical example of a valuable coastal ecosystem that is under increasing anthropogenic threat in China. To understand the current health status of this region, three surveys in 2011 for the abiotic conditions and macrobenthic assemblages were performed. The concentration of trace metals were relatively low in the sediment at all sampling stations representing a good sediment quality. A total of 159 macrobenthic species were identified during the three surveys. ABC curves showed that the macrobenthic fauna at 8 sampling stations suffered disturbances from human activities. M-AMBI index indicates that the benthic ecological quality of YRD is currently still not in a good condition. Five trace metals, water temperature and depth were the main environmental variables affecting the distribution pattern of macrobenthic assemblages. Community succession has occurred over the past 60years, as evidenced by changes of species composition, key species, distribution pattern and range.


Assuntos
Ecologia , Monitoramento Ambiental , Invertebrados , Animais , China , Ecossistema , Poluentes Ambientais , Rios
2.
Nature ; 504(7478): 79-83, 2013 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-24305151

RESUMO

The risk of flood disasters is increasing for many coastal societies owing to global and regional changes in climate conditions, sea-level rise, land subsidence and sediment supply. At the same time, in many locations, conventional coastal engineering solutions such as sea walls are increasingly challenged by these changes and their maintenance may become unsustainable. We argue that flood protection by ecosystem creation and restoration can provide a more sustainable, cost-effective and ecologically sound alternative to conventional coastal engineering and that, in suitable locations, it should be implemented globally and on a large scale.


Assuntos
Conservação dos Recursos Naturais , Ecossistema , Aquecimento Global , Conservação dos Recursos Naturais/economia , Engenharia/economia , Engenharia/normas , Inundações
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