نتایج جستجو برای: harvest management
تعداد نتایج: 871504 فیلتر نتایج به سال:
Harvest residues (HR) are one of the important aspects sustainable management in agriculture, representing a significant portion organic matter (OM) that can be retained or removed from agro-ecosystems. There several ways to manage plant residues: (i) burning, (ii) incorporation soil, (iii) leaving after harvest on soil surface form mulch, (iv) undersowing crops HR and (v) baling removing plot....
Antler-based selective-harvest criteria (SHC) for white-tailed deer (Odocoileus virginianus) management is common on public lands throughout the Southeast despite little published literature examining their effects on harvest composition, antlered harvest per unit effort (HPE), and antler scores. Particularly, SHCs may select against larger-antlered males within each age cohort, resulting in sm...
forage K concentration was 12 g kg 1 (Brown et al., 1969). Timothy stands should persist over time with a High K grass forage increases risk of animal metabolic disorders, concentration of 15 to 18 g K kg 1 in headed spring and forage management of perennial grass grown under K-limiting soil conditions needs further study. Our objective was to evaluate growth and 12 to 16 g K kg 1 in regrowth, ...
Given the persistence of low scaup population levels, there continues to be interest in a decisionmaking framework for harvest management that acknowledges the limitation of extant monitoring programs and our incomplete understanding of population dynamics. We evaluated the potential of using a simple, surplus production (i.e., logistic growth) model to represent scaup population dynamics, coup...
We describe and assess several methods for scheduling fuel management treatments to achieve timber harvest and landscape pattern goals across space and time. Four landscape patterns of management activities are modeled (dispersed, clumped, random, and regular). The intent is to examine the effects of spatial and temporal placement of fuel management activities on resulting wildfire behavior. Th...
In the light of daunting global sustainability challenges such as climate change, biodiversity loss and food security, improving our understanding of the complex dynamics of the Earth system is crucial. However, large knowledge gaps related to the effects of land management persist, in particular those human-induced changes in terrestrial ecosystems that do not result in land-cover conversions....
Climate change may impact forest management activities with important implications for forest ecosystems. However, most climate change research on forests has focused on climate-driven shifts in species ranges, forest carbon, and hydrology. To examine how climate change may alter timber harvesting and forest operations in north temperate forests, we asked: 1) How have winter conditions changed ...
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