搜索结果: 1-15 共查到“动物学 change”相关记录24条 . 查询时间(0.184 秒)
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了解物种的种群趋势和分布范围动态对于全球物种保护至关重要。自人类世以来,随着人类活动强度的持续升级,全球物种遭受了栖息地的急剧丧失和分布范围的缩小。由于大部分原栖息地因人类活动出现各种方式的退化,动物会迁移到新的栖息地以获得更大的生存机会。这种动态的种群分布范围对于物种的生存至关重要,与种群灭绝的概率直接相关。因此,了解种群分布动态变化的机制并识别驱动因素对于预测和指导种群的保护至关重要。
Birds’ eye size reflects habitat and diet, may predict sensitivity to environmental change
birds visual environmental change deforestation
2021/8/10
A new study shows the eye size of birds can reveal broad patterns of their biology and behavior, including where they live, what they eat and how they hunt, providing a potential roadmap for future co...
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Collapse of desert bird populations likely due to heat stress from climate change(图)
Collapse bird populations due heat stress climate change
2019/10/17
As temperatures rise, desert birds need more water to cool off. At the same time, deserts are becoming drier, setting some species up for a severe crash, if not extinction, according to a new study pu...
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Virginia Tech researchers explore causes of land cover change in African savannas(图)
Virginia Tech researchers land cover change African savannas
2017/11/23
A new study by Virginia Tech researchers tracks land cover changes in the Chobe district of Northern Botswana and provides information that will allow governments and nonprofit organizations to improv...
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Land cover change in Botswana savannas:Don't blame the elephants(图)
Land cover change Botswana savannas Don't blame the elephants
2017/11/23
Why are drylands changing in the Chobe district of Northern Botswana? A new study tracks differences in the savanna there across 30 years, and provides information that will allow governments and non-...
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A stinging report:FSU research shows climate change a major threat to bumble bees(图)
FSU research climate change major threat bumble bees
2017/10/25
New research from a team of Florida State University scientists and their collaborators is helping to explain the link between a changing global climate and a dramatic decline in bumble bee population...
Evolutionary Clock Ticks for Snowshoe Hares Facing Climate Change
Evolutionary Clock Ticks Snowshoe Hares Climate Change
2016/2/22
Anthropogenic climate change has created myriad stressors that threaten to cause local extinctions if wild populations fail to adapt to novel conditions. We studied individual and population-level fit...
New framework sheds light on how,not if,climate change affects cold blooded animals
New framework not if climate change cold blooded animals
2016/2/22
Cold-blooded animals like lizards, insects, and fish have a preferred body temperature range at which they hunt, eat, move quickly, and reproduce. Fear that a warming climate will constrict this tempe...
物种的分布区大小存在着巨大的差异,有的物种分布区面积可达数百万平方公里,而有的仅数十平方米。探索影响这些差异的因素不但对了解生物多样性的地理分布有重要启示,而且有助于我们预测物种的分布区是如何响应气候变化而改变的。通常认为,当前的气候,比如说,年(内)气候变异程度和极端气候,影响物种的分布区大小:物种经受的年内气候变异程度越高或极端气候极值越大,其分布区就相应地越大;另外,长期的气候变化,地形复杂...
Climate change lethal to baby lizards:Nests become heat traps
Climate change lethal baby lizards Nests become heat traps
2015/9/9
The expected impact of climate change on North American lizards is much worse than first thought. A team of biologists led by Arizona State University investigators has discovered that lizard embryos ...
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大气CO2浓度升高不仅加剧了全球气候变化,还改变了动植物的生长发育过程。其中,对C3植物最重要的影响是增加了光合作用,并降低气孔导度。而植物气孔导度的降低导致植物蒸腾作用降低,水分利用率增加,对蚜虫这类取食植物韧皮部汁液的刺吸式口器昆虫来说,寄主植物保持相对高的水势和膨压对蚜虫被动取食、获取植物汁液非常重要。在调节水分利用效率和叶片气孔的张开程度过程中,植物脱落酸(ABA)信号途径发挥至关重要的作...
Performance and behaviour at milking after relocation and housing change of dairy cows
cattle barn change milking system milk yield behavioural reaction preference
2015/6/24
The hypothesis that relocation of cows with a housing change temporarily decreases their milk production and affects cows’ behaviour in the milking parlour has been proved. Forty-one Holstein cows on ...
Climate Change Does Not Bode Well for Picky Eaters: New Study Links Resiliency to Penguins’ Diets
Climate Change Does Not Bode Well Picky Eaters: New Study Links Resiliency Penguins’ Diets
2015/3/4
In a part of the world that is experiencing the most dramatic increase in temperature and climate change, two very similar species of animals are responding very differently. New research published to...
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Conservation targeting tigers pushes leopards to change(图)
Conservation tigers pushes leopards change
2014/12/30
A leopard may not be able to change its spots, but new research from a World Heritage site in Nepal indicates that leopards do change their activity patterns in response to tigers and humans—but in di...
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New CU-Boulder study shows differences in mammal responses to climate change(图)
mammal small mammals
2014/3/18
If you were a shrew snuffling around a North American forest, you would be 27 times less likely to respond to climate change than if you were a moose grazing nearby.