Overwinter oxygen and silicate dynamics in a high Arctic lake (Immerk Lake, Devon Island, Canada)
Overwinter oxygen and silicate dynamics in a high Arctic lake (Immerk Lake, Devon Island, Canada)
复制标题
北极高海拔湖泊(加拿大德文岛伊默克湖)的越冬氧气和硅酸盐动态
DOI:
10.1080/20442041.2022.2063623
复制
发表时间:
2022
期刊:
影响因子:
3.1
通讯作者:
Apollonio, Spencer
中科院分区:
文献类型:
--
作者:
Michaud, Alexander B.;Apollonio, Spencer
Arctic lakes are ice covered for 8–12 months of the year, but the duration and thickness of ice cover is decreasing with increased warming. There is a paucity of baseline data documenting the geochemical dynamics of nutrients and oxygen beneath ice cover of high Arctic lakes, a gap that presents a challenge when attempting to understand the impacts of a rapidly changing Arctic on lake ecosystems. We present an annual cycle of temperature, oxygen, and silicate data from Immerk Lake on Truelove Lowland, Devon Island, Canada. Water column oxygen concentrations decreased while silicate concentrations increased during the ice-covered season. Ice cover melting during spring–summer is associated with rapid net decreases of the silicate standing stock at almost 3 times the rate of its net increase over winter. These data show the importance of the extended winter season for regeneration of silicate, an essential nutrient for diatom populations, which are important members of the phytoplankton community and carbon cycle of Arctic lakes. These data collected 60 years ago serve as a benchmark and document the water column oxygen and silicate dynamics in an Arctic lake during ice formation, winter darkness, and ice-cover melting periods.
登录
查看更多内容
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
J. Babin;E. Prepas
通讯作者:
E. Prepas
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
J. Kalff;H. Welch
通讯作者:
H. Welch
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
U. Sommer;H. Stabel
通讯作者:
H. Stabel
影响因子:
4
作者:
Mari Lehtimäki;H. Sinkko;P. Tallberg
通讯作者:
P. Tallberg
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
G. Tipa
通讯作者:
G. Tipa