中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
地理科学与资源研究所 [1]
新疆生态与地理研究所 [1]
烟台海岸带研究所 [1]
采集方式
OAI收割 [3]
内容类型
SCI/SSCI论文 [1]
学位论文 [1]
期刊论文 [1]
发表日期
2020 [1]
2019 [1]
2010 [1]
学科主题
生态学 [1]
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木本植物胡伯尔值沿我国西北到东南之降水梯度的变化
学位论文
OAI收割
北京: 中国科学院大学, 2020
作者:
郭勇
  |  
收藏
  |  
浏览/下载:270/0
  |  
提交时间:2021/12/10
胡伯尔值
比叶面积
不同气候带
分布格局
气候因素
Huber value
Specific leaf area
Different climate zones
Distribution pattern
Climatic factors
烟台牟平海洋牧场季节性低氧对大型底栖动物群落的生态效应
期刊论文
OAI收割
生物多样性, 2019, 卷号: 27, 期号: 2, 页码: 200-210
作者:
李宝泉
  |  
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2020/06/17
低氧
群落结构
群落恢复
敏感种
机会种
hypoxia
community structure
community recovery
sensitive species
opportunistic species
Hypoxia is a common phenomenon in the world's oceans, especially in the shallow waters of coastal zones. Rates of hypoxia are increasing due to global climatic changes and anthropogenic activities. Hypoxia can cause mass mortality of marine animals and can have severe negative impacts on marine ecosystems. To better understand the effects of hypoxia on macrobenthic communities, a survey was carried out in the Muping Marine Ranch (Yantai) during June, August and September of 2016. Results showed that seasonal hypoxia led to changes in benthic community structure, especially in terms of species composition and dominant species. The dominant species were Polychaeta Lumbrinereis latreilli, Sternaspis scutata and Mollusca Endopleura lubrica in summer. The opportunistic species Lumbrinereis latreilli increased, whereas, sensitive species such as Leptomya minuta, Glycera chirori, Upogebia major, Pontocrates altamarimus, Eriopisella sechellensis decreased during the hypoxic period of August. Hypoxia also reduced biodiversity indices. The effect of hypoxia on abundance and biomass were not significant, mainly because of the increase in the opportunistic Lumbrinereis latreilli, which counteracted the decline in abundance and biomass of other species. Individual physiological tolerance to hypoxia was different among species. Lumbrinereis latreilli showed higher tolerance to hypoxia in dissolved oxygen (DO) = 1.0 mg/L compared to other species. Some sensitive species, such as Leptomya minuta, Upogebia major, Pontocrates altamarimus and Eriopisella sechellensis showed lower tolerance when DO < 2.5 mg/L. When DO increased to 2.5 mg/L, the macrobenthic community start to recover gradually. The recovery extent and time needed were closely related to the degree of seasonal hypoxia.
Impacts of precipitation seasonality and ecosystem types on evapotranspiration in the Yukon River Basin, Alaska
SCI/SSCI论文
OAI收割
2010
Yuan W. P.
;
Liu S. G.
;
Liu H. P.
;
Randerson J. T.
;
Yu G. R.
;
Tieszen L. L.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2012/06/08
mean annual evapotranspiration
different climatic zones
gross primary
production
plant functional-type
black spruce forest
stomatal
conductance
boreal forest
energy-balance
carbon balance
water
dynamics