Growth response of lutz spruce saplings to the removal of a herbaceous competitor and the application of fertilizer in Southeast Alaska [PDF]
, 2014 Thesis (M.S.) University of Alaska Fairbanks, 2014.Herbaceous competitor species such as fireweed can impact future survival and growth of Lutz (Picea x lutzii Little, Pinaceae) spruce saplings. Fertilizer is applied to crop trees in order to supply more
Dickson, Emily
core
Effect of White Spruce Release on Subsequent Defoliation by the Yellowheaded Spruce Sawfly, Pikonema Alaskensis (Hymenoptera: Tenthredinidae) [PDF]
, 2017 Hand release of 22 5-year-old white spruce, Picea glauca (Moench) Voss, dramatically increased the amount of defoliation by the yellowheaded spruce sawfly, Pikonema alaskens is . The percent defoliation of the released trees was six times the defoliation
Kulman, H. M, Morse, B. W
core +2 more sources
Remote Sensing in Ecology and Conservation, EarlyView.We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin +5 more
wiley +1 more source
Recovery of Abies alba and Picea abies saplings to browsing and frost damage depends on seed source
Ecology and Evolution, 2019 The density of wild ungulates has increased in the last century, and browsing has become a major driver of forest succession in the northern hemisphere.
Andrea Doris Kupferschmid +1 more
doaj +1 more source
Aspects of precommercial thinning in heterogeneous forests in southern Sweden [PDF]
, 2005 The overall objective of the work underlying this thesis was to suggest and evaluate possible strategies for the tending of young heterogeneous stands of Norway spruce, Scots pine and birch in southern Sweden.
Fahlvik, Nils
core
Human Impacts on Forest Biodiversity in Protected Walnut-Fruit Forests in Kyrgyzstan [PDF]
, 2014 We used a spatially explicit model of forest dynamics, supported by empirical field data and socioeconomic data, to examine the impacts of human disturbances on a protected forest landscape in Kyrgyzstan.
Abdymomunov R. A. +47 more
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Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects
Wildlife Biology, EarlyView.Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer +8 more
wiley +1 more source
Localidades de la Picea chihuahuana
Botanical Sciences, 1957 En 1942, en que fue descubierta en México la Picea chihuahuana, solamente se registraron cuatro lugares del estado de Chihuahua. Desde aquel año a esta fecha se ha encontrado en otras localidades, y aquí se mencionan todas: Arroyo de Los Talayotes ...
Maximino Martínez
doaj +1 more source
Wildlife Biology, EarlyView.One of the most difficult challenges for wildlife managers is reliably estimating wildlife populations. Camera traps combined with spatial capture–recapture (SCR) models are a popular tool for population estimation. They have limitations, however, including long data processing times.
Shannon P. Finnegan +5 more
wiley +1 more source
The Influence of Physical Treatments on Seed Germination and Seedling Development of Spruce (Picea abies [L.] Karst.) [PDF]
, 2022 Steluţa-Maria Sîngeorzan +11 more
openalex +1 more source