Blar i NHH Brage på forfatter "Poudel, Diwakar"
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An Analysis of Social Seed Network and Its Contribution to On-Farm Conservation of Crop Genetic Diversity in Nepal
Poudel, Diwakar; Sthapit, Bhuwon; Sherstha, Pratap (Journal article; Peer reviewed, 2015)Social seed systems are important for the maintenance of crop genetic diversity on farm. This is governed by local and informal system in the community through a farmers’ network. This paper analyses these local seed ... -
Analyzing risk of stock collapse in a fishery under stochastic profit maximization
Poudel, Diwakar; Sandal, Leif Kristoffer; Kvamsdal, Sturla Furunes (Discussion paper;2012:4, Working paper, 2012-04)In commercial fisheries, stock collapse is an intrinsic problem caused by overexploitation or due to pure stochasticity. To analyze the risk of stock collapse, we apply a relatively simple Monte Carlo approach which can ... -
Do species interactions and stochasticity matter to optimal management of multispecies fisheries?
Poudel, Diwakar; Sandal, Leif Kristoffer; Steinshamn, Stein Ivar; Kvamsdal, Sturla Furunes (Discussion paper;2012:1, Working paper, 2012-01)The multispecies fisheries management looks at a bigger picture in addressing the long-term consequences of present decisions. This implies an ecosystem management that includes a number of species and their physical, ... -
Fisheries management under irreversible investment : does stochasticity matter?
Poudel, Diwakar; Sandal, Leif Kristoffer; Kvamsdal, Sturla Furunes; Steinshamn, Stein Ivar (Discussion paper;2011:20, Working paper, 2011-11)We present a continuous, nonlinear, stochastic and dynamic model for capital investment in the exploitation of a renewable resource. Both the resource stock and capital stock are treated as state variables. The resource ... -
Greed is good: from super-harvest to recovery in a stochastic predator-prey system
Ni, Yuanming; Sandal, Leif K.; Kvamsdal, Sturla F.; Poudel, Diwakar (Discussion paper;5/19, Working paper, 2019-09-04)This paper demonstrates a predator-prey system of cod and capelin that confronts a possible scenario of prey extinction under the first-best policy in a stochastic world. We discover a novel ‘super-harvest’ phenomenon that ... -
Harvesting in a Fishery with Stochastic Growth and a Mean-Reverting Price
Kvamsdal, Sturla F; Poudel, Diwakar; Sandal, Leif Kristoffer (Journal article; Peer reviewed, 2014)We analyze a continuous, nonlinear bioeconomic model to demonstrate how stochasticity in the growth of fish stocks affects the optimal exploitation policy when prices are stochastic, mean-reverting and possibly harvest ... -
Long-term sustainable and optimal management of multispecies stochastic fisheries
Poudel, Diwakar; Sandal, Leif Kristoffer; Steinshamn, Stein Ivar; Kvamsdal, Sturla Furunes (Working papers;01/14, Working paper, 2014-02)Multispecies fisheries management is the first step towards ecosystem-based fisheries management. Multispecies management accounts for a number of species and their physical, biological, and economic interactions. These ... -
On Farm Conservation of Crop Genetic Resource: Declining De Facto Diversity and Optimal Funding Strategy
Poudel, Diwakar (Journal article; Peer reviewed, 2015)Crop genetic resources (CGRs) are crucial natural resource which ensure food or livelihood security of billions of people today as well as ensure future agricultural innovations. However, the CGR diversity remaining in in ... -
Stochastic optimization for multispecies fisheries in the Barents Sea
Poudel, Diwakar; Sandal, Leif Kristoffer (Discussion paper;02/14, Working paper, 2014-02)This study presents a multispecies stochastic model. The model suggests optimal fishing policy for two species in a three species predator prey ecosystem in the Barents Sea. We have employed stochastic dynamic programing ...