نتایج جستجو برای: latitude
تعداد نتایج: 16503 فیلتر نتایج به سال:
Quantifying change in ocean biology using satellites is a major scientific objective. We document trends globally for the period 1998-2012 by integrating three diverse methodologies: ocean color data from multiple satellites, bias correction methods based on in situ data, and data assimilation to provide a consistent and complete global representation free of sampling biases. The results indica...
Bergmann's rule-an increase in body size with latitude-correlates with latitudinal declines in ambient temperature and predation risk, but relatively few studies simultaneously explore the relative importance of these factors. Along temperate Atlantic shorelines, the isopod Idotea balthica from high latitudes are 53% longer on average than isopods from low latitudes. When reared at 6°-24°C, juv...
Range shifts have been documented in many organisms, and climate change has been implicated as a contributing driver of latitudinal and altitudinal range modifications. However, little is known about what species trait(s) allow for faster environmental tracking and improved capacity for distribution expansions. We used data for 416 species of moths, and show that range limits in Sweden have shi...
In this chapter we argue that while pesticides can be harmful to pollinators, when they are used in an integrated pest and pollinator management (IPPM) context, both pest management and pollinator protection may be achieved. Our growing knowledge of the impacts of pesticides on honey bees as well as bumble bees and solitary bees allows us to use the latitude we have in pest management including...
The dynamics of ionospheric troughs during intense geomagnetic storms is considered in this paper. study based on electron density measurements at CHAMP satellite altitudes 405–465 km the period from 2000 to 2002. A detailed analysis four with Kp 5+ 9? presented. Three were identified: sub-auroral, mid-latitude, and low-latitude. sub-auroral trough usually defined as main (MIT). mid-latitude ob...
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