Results 31 to 40 of about 14,111 (141)

Black bear density in Glacier National Park, Montana

Wildlife Society Bulletin, 2014
We report the first abundance and density estimates for American black bears (Ursus americanus) in Glacier National Park (NP), Montana, USA. We used data from 2 independent and concurrent noninvasive genetic sampling methods—hair traps and bear rubs ...
Jeff B. Stetz, Katherine C. Kendall, Amy C. Macleod   +2 more
doaj   +1 more source

A seismic analysis of subglacial lake D2 (Subglacial Lake Cheongsuk) beneath David Glacier, Antarctica [PDF]

The Cryosphere
Subglacial lakes beneath Antarctic glaciers are pivotal in advancing our understanding of cryosphere dynamics, basal hydrology, and microbial ecosystems. We investigate the internal structure and physical properties of Subglacial Lake D2 (SLD2), which is
H. Ju, H. Ju, S.-G. Kang, Y. Choi, S. Pyun, M. J. Lee, H. Kwak, K. Kim, Y. Kim, J. I. Lee   +9 more
doaj   +1 more source

Host plant resistance promotes a secondary pest population

Ecosphere, 2020
Insecticides can cause secondary pest outbreaks that weaken the benefit of chemical pest control. These detrimental nontarget effects motivate the use of alternative pest management strategies such as host plant resistance and intercropping.
Cory S. Straub, Jamie A. Faselt, Erich S. Keyser, Michael Traugott   +3 more
doaj   +1 more source

Seismic Imaging of the Arctic Subsea Permafrost Using a Least-Squares Reverse Time Migration Method

Remote Sensing
High-resolution seismic imaging allows for the better interpretation of subsurface geological structures. In this study, we employ least-squares reverse time migration (LSRTM) as a seismic imaging method to delineate the subsurface geological structures ...
Sumin Kim, Seung-Goo Kang, Yeonjin Choi, Jong-Kuk Hong, Joonyoung Kwak   +4 more
doaj   +1 more source

When Do Single‐Species Occupancy Models Outperform Multispecies Models?

Ecology and Evolution
Occupancy models have become increasingly popular for species monitoring and assessment, in part, because detection/non‐detection data are readily obtained using a variety of methods.
Gavin G. Cotterill, Douglas A. Keinath, Tabitha A. Graves   +2 more
doaj   +1 more source

Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes

Nature Communications
Climate change induced shifts in treeline position, both towards higher altitudes and latitudes induce changes in soil organic matter. Eventually, soil organic matter is transported to alpine and subarctic lakes with yet unknown consequences for ...
Núria Catalán, Carina Rofner, Charles Verpoorter, María Teresa Pérez, Thorsten Dittmar, Lars Tranvik, Ruben Sommaruga, Hannes Peter   +7 more
doaj   +1 more source

Environmental gradients shape microbial community structure and ecosystem processes in Antarctic lakes on King George Island

Scientific Reports
Antarctic lakes are extreme, oligotrophic habitats that contain microbial communities distinct from those of temperate freshwater systems. Our central question was whether these lakes host microbial communities distinct from those of non-Antarctic ...
Jiyoung Yoon, Hanbyul Lee, Yeongcheol Han, Sun-Yong Ha, Min Kyung Lee, Kitae Park, Hyejin Jung, Cheon Yun Kang, Yong-Un Chae, Jang-Cheon Cho, Ok-Sun Kim   +10 more
doaj   +1 more source

Development of Petrov glacial-lake system (Tien Shan) and outburst risk assessment

Лëд и снег, 2015
Global climate warming causes an intensive melting and retreat of glaciers in the Tien Shan mountains. Melting water of glaciers causes overfilling of high mountain lakes.
I. A. Torgoev, Yu. G. Aleshin, S. A. Erokhin   +2 more
doaj   +1 more source

Changes of Marukh Glacier from 1945 to 2011

Лëд и снег, 2015
Field studies have been carried out in summer 2011 at Marukh Glacier located in western part of the Northern Caucasus. The studies included ground-based radio-echo sounding measurements at a frequency of 20 MHz and glacier surface elevation survey using ...
S. S. Kutuzov, I. I. Lavrentiev, Yu. Ya. Macheret, D. A. Petrakov   +3 more
doaj   +1 more source

Dynamics of glaciers Tomich and Vodopadny (Altai) for the second half of XX – beginning of XXI centuries

Лëд и снег, 2015
Estimates of dynamics of two Altai glaciers Tomich (Katun Ridge) and Vodopadny (North Chuisky Ridge) for the whole period of instrumental observations are shown in the paper.
S. Yu. Samoylova, A. A. Shevchenko, R. T. Sheremetov, A. A. Kolomeytsev   +3 more
doaj   +1 more source