Breaking Conservation News

Receive news, views and features from the front line of conservation, straight to your inbox.

Thank You

 

Peer-reviewed Journal Articles

The Moore Center for Science at Conservation International is one of the world’s premier conservation research institutes, producing and applying groundbreaking and policy-relevant research to help decision-makers protect nature. To date, Conservation International has published more than 1,100 peer-reviewed articles, many in leading journals including Science, Nature and the Proceedings of the National Academy of Sciences.

On average, each of our scientific papers is cited more than 45 times by other scholars — a rate exceeding that of any other U.S. conservation organization as well as leading universities.

Here is an archive of our most recent research.

Detecting gold mining impacts on insect biodiversity in a tropical mining frontier with SmallSat imagery

Eric Stoll, Anand Roopsind, Gyanpriya Maharaj, Sandra Velazco, T. Trevor Caughlin

Remote Sensing in Ecology and Conservation

January 21, 2022

Gold mining is a major driver of Amazonian forest loss and degradation. As mining activity encroaches on primary forest in remote and inaccessible areas, satellite imagery provides crucial data for monitoring mining-related deforestation. High-resolution imagery, in particular, has shown promise for detecting artisanal gold mining at the forest frontier. An important next step will be to establish relationships between satellite-derived land cover change and biodiversity impacts of gold mining. In this study, we set out to detect artisanal gold mining using high-resolution imagery and relate mining land cover to insects, a taxonomic group that accounts for the majority of faunal biodiversity in tropical forests. We applied an object-based image analysis (OBIA) to classify mined areas in an Indigenous territory in Guyana, using PlanetScope imagery with ~3.7 m resolution. We complemented our OBIA with field surveys of insect family presence or absence in field plots (n = 105) that captured a wide range of mining disturbances. Our OBIA was able to identify mined objects with high accuracy (>90% balanced accuracy). Field plots with a higher proportion of OBIA-derived mine cover had significantly lower insect family richness. The effects of mine cover on individual insect taxa were highly variable. Insect groups that respond strongly to mining disturbance could potentially serve as bioindicators for monitoring ecosystem health during and after gold mining. With the advent of global partnerships that provide universal access to PlanetScope imagery for tropical forest monitoring, our approach represents a low-cost and rapid way to assess the biodiversity impacts of gold mining in remote landscapes.

Read More

CITATION

Stoll, Roopsind, A., Maharaj, G., Velazco, S., & Caughlin, T. T. (2022). Detecting gold mining impacts on insect biodiversity in a tropical mining frontier with SmallSat imagery. Remote Sensing in Ecology and Conservation. Portico. https://doi.org/10.1002/rse2.250