Results 71 to 80 of about 27,903 (194)

[Research progress on biocomposites based on bioactive glass]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023
Peng Y, Lan L, Mu J, Hou S, Cheng L.
europepmc   +1 more source

Success of restoration strategies in preventing extirpation of 2 critically endangered coral species

open access: yesConservation Biology, EarlyView.
Abstract An unprecedented marine heatwave in 2023 caused widespread coral bleaching and mortality throughout the Caribbean. In the Florida Keys (USA), 2 foundation species, elkhorn coral (Acropora palmata) and staghorn coral (Acropora cervicornis), were severely affected.
Erinn M. Muller   +29 more
wiley   +1 more source

设施土壤微生物学特性变化研究

open access: yesShuitu Baochi Xuebao, 2006
采用定点取样的方法,研究了不同种植年限设施土壤微生物主要类群、生物量碳和5种酶活性的变化特点,结果表明:(1)不同种植年限设施土壤微生物主要类群随季节变化不一致,细菌数量先升后降,高峰出现在6月,10月最低;真菌和放线菌数量均在3月最多,而后逐渐减少。随设施种植年限的延长,微生物总数逐渐增加,但真菌和放线菌占微生物总数的比例却呈下降趋势。与露地相比,设施栽培中真菌增加快于细菌。(2)不同种植年限设施土壤微生物生物量碳在3月和6月含量最高,随设施种植年限的延长,微生物生物量碳含量也增加。(3 ...
王珊, 李廷轩, 张锡洲, 周建新
doaj   +2 more sources

Optimization for the preparation process of silver nanoparticles and their biological activity. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban, 2022
Zou J, Luo W, Wang S, Wang Y.
europepmc   +1 more source

独脚金内酯的多重生物学功能 [PDF]

open access: yes, 2017
独脚金内酯是独脚金醇类化合物的总称,是一种倍半萜内酯,来源自类胡萝卜素生物合成途径。近年来研 究发现,独脚金内酯不仅具有刺激种子发芽,还具有诱导丛枝菌根真菌分支和抑制植物分枝等多重生物学功能。独脚金内酯的多重角色在植物自身发育与周围环境的协调过程中发挥着重要作用。为了深入了解独脚金内酯,笔者归纳了其所具有的多重“角色”:种子萌发刺激物,共生信号物质及新型植物激素,并进一步探讨了各种功能与其结构的内在关系 ...
任承钢 孔存翠 王计平 李润植 解志红   +1 more
core  

Threats to and management of Natura 2000 protected areas relative to agricultural practices

open access: yesConservation Biology, EarlyView.
Abstract The Natura 2000 (N2K) network combines biodiversity protection and socioeconomic targets. Human activities, such as agricultural practices, can affect biodiversity in N2K sites in diverse ways. Limiting activities with negative impacts while enforcing land management that supports biodiversity is crucial for effective conservation.
Giorgio Zavattoni   +7 more
wiley   +1 more source

化肥减量配施生物有机肥对油菜生长及土壤微生物和酶活性影响

open access: yesShuitu Baochi Xuebao, 2018
通过盆栽试验,研究化肥减量10%~30%条件下,配施与所减化肥相同用量的2种生物有机肥对油菜生理代谢、产量、土壤生物学特性和养分含量的影响,系统的阐述了生物有机肥应用于蔬菜生产的优势所在。结果表明:减量化肥配施生物有机肥可促进油菜生长,提高油菜叶片内叶绿素含量和根系活力,同时增强了油菜叶片和根系内抗氧化酶(SOD、POD、CAT)活性,降低了过氧化物质含量(MDA、O2?
宋以玲   +6 more
doaj  

When and why to give shorebirds a head start

open access: yesConservation Biology, EarlyView.
Abstract Headstarting is a translocation technique involving the hatching or rearing of wild eggs or young in captivity and the release of those individuals back to the wild at or before independence. It has been trialed as a conservation intervention for shorebirds over recent decades to improve the population trend of target populations by increasing
Lynda Donaldson   +4 more
wiley   +1 more source

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