Results of ecological analysis.

<p>(A) Results for tributaries originating in the Colombian, Ecuadorian, and northern Peruvian Andes. (B) Results for tributaries originating in the Bolivian and southern Peruvian Andes.</p

Summary of estimated ecological impact and potential energy capacity from low and moderate impact dams in relation to projected 2020 demand.

<p>Summary of estimated ecological impact and potential energy capacity from low and moderate impact dams in relation to projected 2020 demand.</p

Summary of existing and planned dams in the Andean Amazon by country and river basin.

<p>Summary of existing and planned dams in the Andean Amazon by country and river basin.</p

Best practice guidelines.

<p>Best practice guidelines.</p

Consideration of key ecological and social factors: overlaps.

<p>See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0063022#pone.0063022.s007" target="_blank">Figure S7</a> for more information on background layer. Light blue indicates an important or sensitive area that is not covered by a hydrocarbon block, while orange indicates an area that is covered by a block. Further, we indicate planned 2D and 3D seismic testing, exploratory and production wells, access roads, and flowlines/pipelines that would overlap with at least one of the key ecological and social factors.</p

Study focal area.

<p>We focus on the Department of Loreto in the northern Peruvian Amazon. Amazon ecoregions are as defined by <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0063022#pone.0063022-Olson1" target="_blank">[61]</a>.</p

Existing and planned 2D and 3D seismic testing in Loreto.

<p>2D testing is represented by straight lines and is measured in kilometers while 3D testing is represented by polygons and measured in square kilometers. It is important to note that numerous hydrocarbon blocks have previously existed but subsequently been retired. Thus, many seismic lines appear outside the current blocks.</p

Hydrocarbon blocks in Loreto.

<p>There are three general types of blocks based on the contractual agreement between government and a company: concession in exploration phase, concession in production phase, and proposed concession under promotion or negotiation.</p

Analysis of planned projects in relation to best practice guidelines in high activity zone of Loreto.

<p>(A) Planned exploratory wells, production wells, and processing facilities. Red circles indicate multiple platforms within eight kilometers of a single hypothetical ERD-capable drilling platform. (B) Alternative design based on best practice. Yellow dots indicate where an ERD-capable drilling platform could replace multiple planned platforms. Note that the Dorado processing facility is eliminated due to distance from a navigable river.</p

High biodiversity vulnerable forests.

<p>Vulnerable forest areas for (a) mammals and (b) birds within the 10 percent richest global land area for threatened (blue), small-ranged (red), or both (purple) mammal and bird species (Jenkins et al. 2013, Pimm et al. 2014).</p