Wildlife corridors as a connected subgraph problem

Conrad, Jon M.; Gomes, Carla P.; Hoeve, Willem‐Jan van; Sabharwal, Ashish; Suter, Jordan F.

doi:10.1016/j.jeem.2011.08.001

Cited by 73 publications

(53 citation statements)

References 33 publications

(46 reference statements)

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“…In other landscapes, say larger ones (cf. Conrad et al 2012) or landscapes without clear strategic positions, the buyout of just one landowner may result in lower market efficiency of the buyout policy.…”

Section: Resultsmentioning

confidence: 99%

“…In principle, these auctions allow a conservation agency to purchase a specific amount of goods and services at lower expense than, for example, uniform price auctions. However, ecological efficiency might not be reached when procurement from the lowest bidders delivers a fragmented outcome and crucial pathways to connect different habitat patches are not formed (Margules and Pressey 2000, Williams and Snyder 2005, Conrad et al 2012. 1 Mechanisms in which the payment received for conserving a plot depends on the number of retired neighboring plots (so-called agglomeration bonuses) can help reduce this potential fragmentation problem (Parkhurst et al 2002, Parkhurst and Shogren 2007, Wätzold and Drechsler 2005, Drechsler et al 2010.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, it is implicitly assumed that the conservation planner has full information on the (opportunity) costs of procuring land from different landowners, and that all landowners will participate (cf. Ando et al 1998, Williams 1998, Williams and Snyder 2005, Conrad et al 2012. Bamière et al (2013) do assume asymmetric information with respect to the landowners' opportunity costs, but they do not allow for voluntary participation in their auction model.…”

Section: Introductionmentioning

confidence: 99%

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Buyouts and Agglomeration Bonuses in Wildlife Corridor Auctions

Dijk¹,

Ansink²,

Soest

2017

SSRN Journal

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We present a general model of bidding behavior in wildlife corridor auctions. Given (i) some spatial configuration of landowners in a landscape, (ii) the landowners' opportunity costs, and (iii) the value of establishing the corridor, our model predicts individual landowners' bids, overall participation rates in the auction, as well as the expected net benefits to the conservation agency. We find that market efficiency of the auction increases in the number of potential corridors. We use simulations to compare a benchmark auction with two policy scenarios in a hypothetical landscape. In one scenario, members of a winning corridor receive an agglomeration bonus. In the other scenario, we buy out a pivotal landowner (one that is part of many potential corridors) prior to the auction. Given equal budgets for the agglomeration bonus and the buyout policy, an agglomeration bonus is less efficient than a buyout for conservation agencies facing low budgets, and vice versa. A risk-averse conservation agency is however always better off using a buyout policy.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Buyouts and Agglomeration Bonuses in Wildlife Corridor Auctions

Dijk¹,

Ansink²,

Soest

2017

SSRN Journal

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“…To do this, we use a traffic flow model based on the mixed integer linear programming method. Similar to [8], we adopt an example given in Fig.1 and Fig.2 to demonstrate the model. Suppose that an origin station has 9 unites of traffic flow.…”

Section: A Modelmentioning

confidence: 99%

Optimal location of electric vehicle charging stations using genetic algorithm

Chen

Shi

Chen

et al. 2015

2015 17th Asia-Pacific Network Operations and Management Symposium (APNOMS)

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In this paper, we investigate the optimal location of electric vehicle (EV) charging stations. As one of the crucial infrastructures of EV, electric charging stations must be widely deployed to meet the growing needs of EV. In this study, we propose a locating method of charging station when considering economics, capacity, coverage and convenience. In order to solve the locating problem, an optimization model for charging stations location is established first, which minimizes the investment cost and transportation cost, meanwhile, the constraints of capacity, coverage and convenience should be satisfied simultaneously. Then, an improved genetic algorithm (GA) is proposed to solve the optimization problem. The simulation results indicate that the proposed locating method is effective and practical.

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“…Given a landscape divided into management units, reserve selection MIPs determine the set of contiguous land parcels that maximize utility for wildlife populations without exceeding a given budget. Graph theory and network optimization techniques are commonly used in contiguous reserve selection models (Williams 1998, Önal & Briers 2006, Conrad et al 2012, Jafari & Hearne 2013. Carvajal et al (2013) propose a model that incorporates wildlife corridors with harvest scheduling.…”

mentioning

confidence: 99%

Combining spatiotemporal corridor design for reindeer migration with harvest scheduling in Northern Sweden

John

Öhman

Tóth

et al. 2016

Scandinavian Journal of Forest Research

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Reindeer husbandry and commercial forestry seek to co-exist in the forests of Northern Sweden. As interwoven as the two industries are, conflicts have arisen. Forest practices have reduced the distribution of lichen, the main winter diet for reindeer. Forest practices have also increased forest density, compromising the animals' ability to pass through forested areas on their migration routes. In an attempt to reduce impacts on reindeer husbandry, we present a spatially explicit harvest scheduling model that includes reindeer corridors with user-defined spatial characteristics. We illustrate the model in a case study and explore the relationship between timber revenues and the selection and maintenance of reindeer corridors. The corridors are not only to include sufficient lichen habitat, but they are also supposed to ensure access for reindeer by connecting lichen areas with linkages that allow unobstructed travel. Since harvest scheduling occurs over a planning horizon, the spatial configuration of corridors can change from one time period to the next in order to accommodate harvesting activities. Our results suggest that maintaining reindeer corridors in harvest scheduling can be done at minimal cost. Also, we conclude that including corridor constraints in the harvest scheduling model is critical to guarantee connectivity of reindeer pastures.

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Wildlife corridors as a connected subgraph problem

Cited by 73 publications

References 33 publications

Buyouts and Agglomeration Bonuses in Wildlife Corridor Auctions

Buyouts and Agglomeration Bonuses in Wildlife Corridor Auctions

Optimal location of electric vehicle charging stations using genetic algorithm

Combining spatiotemporal corridor design for reindeer migration with harvest scheduling in Northern Sweden

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