Results 111 to 120 of about 9,513 (296)

A high‐altitude thermal infrared method for estimating moose abundance and demography in Rocky Mountain National Park, USA

Wildlife Biology, EarlyView.
Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley   +1 more source

Reductions in tree-ring widths of silver fir (Abies alba Mill.) as an indicator of air pollution in southern Poland

Environmental & Socio-economic Studies, 2018
The aim of the study was to investigate how the emission of pollutants to the atmosphere from the late 19th century until modern times has been recorded in rings of silver fir trees growing in southern Poland.
Łuszczyńska Katarzyna, Wistuba Małgorzata, Malik Ireneusz   +2 more
doaj   +1 more source

Benefit or ecological trap? Monitoring the effects of small clear‐cuts on capercaillie Tetrao urogallus and its mammalian predators

Wildlife Biology, EarlyView.
The shift to ‘close to nature forestry' as the dominating forestry regime in western‐European forests has resulted in increasing timber volume and denser forests with negative effects on photophilic species. Hence, there is an increasing focus on active habitat management measures to support these species.
Maria Kochs, Joy Coppes, Tanja Beutel, Gabriel Holz, Jim‐Lino Kämmerle, Michael Kraft, Veronika Braunisch   +6 more
wiley   +1 more source

A Practical Method for Wideband Matching of Antennas Based on Filter Design Techniques

IEEE Access
This article shows several practical improvements on impedance matching methods based on modern filter network theory. New conclusions about matching have been obtained using the Bode-Fano limit, adding frequency-independent reactances (FIRs) to the ...
Santiago Cogollos, Hector Esteban, Vicente E. Boria, Dario Herraiz, Angel Belenguer   +4 more
doaj   +1 more source

Maximizing the detection probabilities of dusky grouse for population monitoring

Wildlife Biology, EarlyView.
Despite its status as a game species in the western USA, rigorous monitoring of dusky grouse Dendragapus obscurus populations is limited. Obtaining an adequate number of observations for effective population monitoring of dusky grouse is challenging due to difficult‐to‐reach montane habitats, cryptic behaviors, and limited personnel, time, and funds at
Elizabeth A. Leipold, Claire Gower, Lance B. McNew   +2 more
wiley   +1 more source

Dusky grouse seasonal resource selection in the Great Basin isolated mountain ranges of Nevada, USA

Wildlife Biology, EarlyView.
Dusky grouse Dendragapus obscurus are a montane forest grouse species with a paucity of information regarding their temporal and spatial resource use during critical times of high mortality and reproductive output. This lack of vital data may leave dusky grouse at risk of sub‐optimal management in many areas of their distribution, especially in the ...
Stephanie Landry, Brian Smith, Erica Stuber, Shawn Espinosa, David Dahlgren   +4 more
wiley   +1 more source

Micro‐habitat selection by boreal woodland caribou improves access to food

Wildlife Biology, EarlyView.
Bio‐logging sensors attached to radiotelemetry receivers have great potential to transform our understanding of the ecological, physiological, and energetic constraints that shape patterns of wildlife movement under field conditions. We used video camera collars to assess microhabitat selectivity by woodland caribou Rangifer tarandus in boreal forests ...
Ian D. Thompson, Philip A. Wiebe, Arthur R. Rodgers, Douglas Reid, James A. Baker, Brent R. Patterson, Eric McNeill, Romain Dejeante, John M. Fryxell   +8 more
wiley   +1 more source

Pests and fungal pathogens associated with Douglas fir stands showing crown defoliation and vitality loss

Journal für Kulturpflanzen
Over the past decade, and particularly since the drought years 2018–2022, significant vitality losses have been observed in German Douglas fir stands. The epicentre of this damage was in Central and South-West Germany.
Gitta Jutta Langer, Johanna Bußkamp, Sandra Peters, Jenny Wietschorke, Jörg Grüner, Janina Faust, Dominik Wonsack   +6 more
doaj   +1 more source

Phylogeography of SW Mediterranean firs: Different European origins for the North African Abies species

, 2014
International audienceThe current distribution of Western Mediterranean Abies species is a result of complex geodynamic processes and climatic oscillations that occurred in the past. Abies sect.
García-Castaño, Juan, L., García-Castaño, Juan,, Ortiz, María,, Terrab, Anass, Talavera, Salvador, Sánchez-Robles, Jose,, Balao, Francisco, Ortiz, María, A., Sánchez-Robles, Jose, M., Véla, Errol   +9 more
core   +1 more source

Development of optimized methods for unbiased dusky grouse population monitoring using real and simulated data

Wildlife Biology, EarlyView.
Rigorous state‐wide monitoring programs are lacking for dusky grouse Dendragapus obscurus, a North American species of forest grouse with relatively low detectability that is found in coniferous and mountainous areas in the western United States and Canada.
Elizabeth A. Leipold, Claire Gower, Lance B. McNew   +2 more
wiley   +1 more source