Results 21 to 30 of about 2,643,404 (347)
Evaluation of the Surrogator® system to increase pheasant and quail abundance
Captive‐rearing and release programs have been used to augment populations of ring‐necked pheasant (Phasianus colchicus), northern bobwhite (Colinus virginianus), and other gamebirds to provide additional hunting opportunities. However, many question the
Eric T. Thacker+4 more
doaj +1 more source
Natural Resources and Global Misallocation [PDF]
Are production factors allocated efficiently across countries? To differentiate misallocation from factor intensity differences, we provide a new methodology to estimate output shares of natural resources based solely on current rent flows data. With this methodology, we construct a new dataset of estimates for the output shares of natural resources ...
Alexander Monge-Naranjo+2 more
openaire +8 more sources
Woody plant encroachment pervasive across three socially and ecologically diverse ecoregions
Woody plant encroachment in grasslands represents one of the greatest challenges for global biodiversity conservation. Furthermore, this is a social-ecological problem, where human activity and behavior have resulted in significant changes in ecological ...
David W. Londe+3 more
doaj +1 more source
Optimal Exploitation of a General Renewable Natural Resource under State and Delay Constraints
In this work, we study an optimization problem arising in the management of a natural resource over an infinite time horizon. The resource is assumed to evolve according to a logistic stochastic differential equation.
M’hamed Gaïgi+2 more
doaj +1 more source
Integrated renovation projects are important for marine ecological environment protection. Three-dimensional hydrodynamics and water quality models are developed for the Maowei Sea to assess the hydrodynamic environment base on the MIKE3 software with ...
Cui Wang+3 more
doaj +1 more source
Article Highlights Compost increased P. spicata and F. campestris root and shoot biomass on alkaline copper mine tailings. Ash increased tailings pH and bunchgrass shoot uptake of molybdenum. P. spicata and F.
Paul M. Antonelli+3 more
doaj +1 more source
Natural resources, democracy and corruption [PDF]
We study how natural resources can feed corruption and how this effect depends on the quality of the democratic institutions. Our game-theoretic model predicts that resource rents lead to an increase in corruption if the quality of the democratic institutions is relatively poor, but not otherwise.
Roland Hodler+2 more
openaire +8 more sources
STUDY ON MORPHO-PHYSICAL FLORAL CHARACTERS OF MANGO (MANGIFERA INDICA) VARIETIES IN SARLAHI, NEPAL [PDF]
Floral characteristics of 27 mango varieties were studied during February-May, 2024. Distinct variations were found among the studied varieties.
Kiran Thapa+6 more
doaj +1 more source
High nitrous oxide emissions from temporary flooded depressions within croplands
Nitrous oxide is an important greenhouse gas and emissions from managed ecosystems are directly correlated to anthropogenic nitrogen input. Here we have measured nitrous oxide emissions from flooded depressions within croplands and from incubated soil ...
By Bo Elberling+9 more
doaj +1 more source
Volatility and the natural resource curse [PDF]
We provide cross-country evidence that rejects the traditional interpretation of the natural resource curse. First, growth depends negatively on volatility of unanticipated output growth independent of initial income, investment, human capital, trade openness, natural resource dependence, and population growth.
van der Ploeg, F., Poelhekke, S.
openaire +10 more sources