User's Drafts and Edits

Displaying 61 - 75 of 93 records found.
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OpenABM: Agent-based model database

Case
OpenABM is a node in the CoMSES Network, providing a growing collection of tutorials and FAQs on agent-based modeling, a model library intended to provide a locus for authors and modelers to share their models, and forums for modeling-related discussions and job postings.You can find OpenABM here: www.openabm.org.
14 Jul 2017

Oyster communities, Gulf of Mexico, Alabama, USA

Case
The Alabama oyster fishing communities are located on the Gulf of Mexico with approximately 100 kilometers of coastline. The case study states that this is an open-access fishery but includes a limited amount of historic data on the development of community based norms and institutions for managing the fishery over time and compares them to those used in the Louisiana oyster fishing community (see related cases below). No information is provided on the number of users involved in the fishery at...
09 Aug 2016

Oyster communities, Gulf of Mexico, Louisiana, USA

Case
The Louisiana oyster fishing communities are located on the Gulf of Mexico with approximately 400 kilometers of coastline in a straight line from the border of Texas on the west to the border of Mississippi on the east. The case study involves historic information on the development of community based norms and institutions and a legally closed tenure structured around oyster leaseholds in Louisiana, compared to other open-access community-based oyster fisheries on the U.S. Gulf Coast. The case...
09 Aug 2016

Parwara Van Panchayat Forest

Case
Parwara is located in the Nainital district of Uttarakhand, India and forests comprise broad-leaved species such as oak. Resources appropriated from the Parwara forests are timber, grass, and leaves. The authors Vishwa Ballabh and Katar Singh, first visited Parwara in 1988 to evaluate the factors that enabled collective action by the panchayat. Based on the initial assessment from a Social-Ecological Sytems (SES) perspective in 1988, the Panchayat was considered successful in managing...
09 Aug 2016

Parwara Van Panchayat Forest: Social structure and exogenous drivers

Case
This paper is an extension of two prior case studies about the Parwara Van Panchayat (forest council):the 1988 Parwara Van Panchayat Forest which covered the status of this social-ecological system (SES) from approx. 1931 to 1985 (Case No. 34); andthe 2008 Parwara Van Panchayat Forest II which provided a SES update up to 2007 (Case No. 159).For purposes of this report, the SES study boundaries were extended beyond the Parwara village Van Panchayat to include an institutional analysis of various...
09 Aug 2016

Parwara village Van Panchayat: Institutional change

Case
The main appropriated resources are grass, used mainly for cattle grazing and compost, and forest tress, used mostly for fuel wood and construction timber. Almost all of the total resource units appropriated in the Parwara Van Panchayat (VP) forest are officially regulated by the Parwara Van Panchayat Committee (VPC), timber and resin are regulated by the state Forest Department. The Nainital District Magistrate, and the Van Panchayat Inspector, who is employed by the state Revenue Department,...
09 Aug 2016

Petty Harbour Cod Fishery

Case
Petty Harbor is located in a town on the eastern shore of the Avalon Peninsula. The resource appropriated from Petty Harbour Cod Fishery is cod. The author examines the perception of the marine environment by fishers. He compared the fishers of Petty Harbour who remain close to shore and use traps and hand lines with fishers from St. Johns who travel further offshore and use long lines. He found that in general fishers have a selective perception of their environment and primarily focus on...
09 Aug 2016

Pezzey-Anderies Model

Model
This model describes the Pezzey-Anderies extension to the Brander-Taylor Easter Island model. In addition to the parameters in the Brandor-Taylor model, Pezzey and Anderies have introduced $tax$ and $h_m$. Pezzey and Anderies (2003) gives the following overview: "We extend the Brander–Taylor model of population and resource development in an isolated society by adding a resource subsistence requirement to people's preferences. This improves plausibility; amplifies population overshoot and...
09 Aug 2016

Pinagbayanan irrigation system

Case
The Pinagbayanan Irrigation System is located in Barrio Pinagbayanan, Laguna in Philippines. The resource appropriated related to the social dilemma is water for irrigation appropriated and distributed by two water pumps and canals that deliver water from the pumps to rice fields, and a gravity irrigation system managed by the National Irrigation Administration. The original case was reported in 1975.This case study is part of the original Common-Pool Resource (CPR) database. A summary of the...
09 Aug 2016

Port Phillip Bay Scallop Fishery

Case
Port Phillip Bay is a large bay in southern Victoria, Australia.The resource appropriated from Port Phillip Bay are scallops. In this case study, the authors describe the scallop fishery and the evolution of its management system after stocks declined. Over time rules such as licenses, individual quotas, and closed seasons have been introduced to manage the resource. This case was part of the original CPR database developed in the 1980s by Edella Schlager and Shui Yan Tang at Indiana...
09 Aug 2016

Pumpa Irrigation System

Model
In this case, the surface water level is modeled by a first order differential equation. There are six sections with equal area that are allocated water based on institutions that determine how long each sector receives water, and in what order. Water is allocated to a given sector by opening and closing gates along the irrigation canals. Based on these allocations, each sector maintains a crop yield depending on the amount of time that maintains their water level within the bounds of a desired...
09 Aug 2016

Pumpa Irrigation System, Central region, Nepal

Case
The Pumpa Irrigation System draws water from the Pumpa river to serve approximately 120 households.  It is a "north-south" system and is in an area with relatively steep terrain.  This case was analyzed using a stylized dynamic model to assess its capacity to cope with new challenges from global change.  The model suggested that the adaptive water allocation rules used by the community (sequential, 12 and 24 hour rotations) could significanty enhance the robustness of the system to increased...
09 Aug 2016

Ranvahi forest community, Gadchiroli district, Maharashtra, India

Case
The Ranvahi forest community is located approximately 25 km from the town of Kurkheda in the Gadchiroli district of Maharashtra, India.  It encompasses a geographical area of 924.43 ha of which 641.71 ha are community forest.  The case study involves an undetermined snapshot in time and catalogues an action situation involving 393 community members organized in 81 households which are dependent on the forest for fuelwood, fodder, timber, water, and wildlife, among others.  Timber...
09 Aug 2016

Resource Dynamics Under Harvest and Sunk Cost Effects

Model
This is a simple model for resource dynamics under harvest. The authors added expected effects of investment in fixed structures on the dynamics of settlement. These sunk-cost effects are not included in this simple model.The authors introduce a model of logictically regrowing resource exploited by a consumer. There is only one variable, which is level of local renewable sources. Parameters are: local renewable resources (R), settlement of humans (H), maximum growth rate (g), maximum level of...
29 Nov 2017

Rusembilan Kembong Fishery, Thailand

Case
The fishing village of Rusembilan is situated on the shore of the Gulf of Thailand, about 3 and half miles from the provincial capital, Pattani. Fishing, which is largely seasonal, is the most important occupation, followed by rice cultivation. The original case spans from 1956 to 1964 and catalogues an action situation involving approximately 1,000 villagers; the resource units are kembong (species of mackerel) and udang ako (species of prawn). Social relationships and communication in...
09 Aug 2016