We launched many artificial satellites around our earth for different purposes what do you think about the impact of artificial satellites and their radiation on biodiversity
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Many amphibian species have experienced substantial population declines or have disappeared al-
together during the last several decades at a number of amphibian survey sites in Central and South Amer-
ica. Our study addresses the use of trends in solar UV-B radiation exposure (280–320 nm) at these sites over
the last two decades, derived from the Total Ozone Mapping Spectrometer satellite data. It is intended to dem-
onstrate a role for satellite observations in determining whether UV-B radiation is a contributing factor in
amphibian declines. We used these data to calculate the daily erythemal (sunburning) UV-B, or UV-Bery, expo-
sure at the latitude, longitude, and elevation of each of 20 survey sites. The annually averaged UV-Bery dose,
as well as the maximum values, have been increasing in both Central and South America, with higher levels
reached at the Central American sites. The annually averaged UV-Bery exposure increased significantly from
1979–1998 at all 11 Central American sites we examined (r 2 -
0.60–0.79; p 0.015), with smaller but sig-
nificant increases at five of the nine South American sites (r 2 -
0.24–0.42; p 0.05). The number of days
having the highest UV-B exposure (6.75 kJ/m2
/day) increased in both regions from 40 days per year to
approximately 58 days per year in 1998 (r2 -
0.24–0.42; p 0.001). In Central America, the contribution of
these very high UV-Bery exposure levels to the annual UV-Bery total increased from approximately 5 to approx-
imately 15% over the 19-year period, but actual daily exposures for each species are unknown. A UV-B ratio,
the highest monthly UV-B exposure relative to the annual average for the highest UV-B category (6.75 kJ/m2
),
increased in both regions over this time period (r2 -
0.73; p 0.001). This UV index was consistently higher
for Central America, where species declines have been the most severe. These results should justify further re-
search into whether UV-Bery radiation plays a role in amphibian population declines and extinctions. We dis-
cuss synergy among UV-B radiation and other factors, especially those associated with alterations of water
chemistry (e.g., acidification) in aqueous habitats.
together during the last several decades at a number of amphibian survey sites in Central and South Amer-
ica. Our study addresses the use of trends in solar UV-B radiation exposure (280–320 nm) at these sites over
the last two decades, derived from the Total Ozone Mapping Spectrometer satellite data. It is intended to dem-
onstrate a role for satellite observations in determining whether UV-B radiation is a contributing factor in
amphibian declines. We used these data to calculate the daily erythemal (sunburning) UV-B, or UV-Bery, expo-
sure at the latitude, longitude, and elevation of each of 20 survey sites. The annually averaged UV-Bery dose,
as well as the maximum values, have been increasing in both Central and South America, with higher levels
reached at the Central American sites. The annually averaged UV-Bery exposure increased significantly from
1979–1998 at all 11 Central American sites we examined (r 2 -
0.60–0.79; p 0.015), with smaller but sig-
nificant increases at five of the nine South American sites (r 2 -
0.24–0.42; p 0.05). The number of days
having the highest UV-B exposure (6.75 kJ/m2
/day) increased in both regions from 40 days per year to
approximately 58 days per year in 1998 (r2 -
0.24–0.42; p 0.001). In Central America, the contribution of
these very high UV-Bery exposure levels to the annual UV-Bery total increased from approximately 5 to approx-
imately 15% over the 19-year period, but actual daily exposures for each species are unknown. A UV-B ratio,
the highest monthly UV-B exposure relative to the annual average for the highest UV-B category (6.75 kJ/m2
),
increased in both regions over this time period (r2 -
0.73; p 0.001). This UV index was consistently higher
for Central America, where species declines have been the most severe. These results should justify further re-
search into whether UV-Bery radiation plays a role in amphibian population declines and extinctions. We dis-
cuss synergy among UV-B radiation and other factors, especially those associated with alterations of water
chemistry (e.g., acidification) in aqueous habitats.
Answered by
1
But there are many negative impacts too. Like each rocket launched into space leaves a large amount of smoke and dust in its trail. The other problems are that space is now becoming crowded. Apart from that space is now not safe with many countries like USA, RUSSIA, and CHINA having satellites that can knock each other out of the skies. But the impact on the biodiversity of the Earth is relatively low unless launch pads are situated in ecologically biodiverse.
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