Insect Abundance and Diversity Respond Favorably to Vegetation Communities on Interim Reclamation Sites in a Semi-Arid Natural Gas Field

Michael F. Curran, Timothy J. Robinson, Pete Guernsey, Joshua Sorenson, Taylor M. Crow, Douglas I. Smith and Peter D. Stahl
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Michael F. Curran: Department of Ecosystem Science and Management, University of Wyoming, Laramie, WY 82071, USA
Timothy J. Robinson: Department of Mathematics and Statistics, University of Wyoming, Laramie, WY 82071, USA
Pete Guernsey: Independent Researcher, Pinedale, WY 82941, USA
Joshua Sorenson: Jonah Energy LLC, Pinedale, WY 82941, USA
Taylor M. Crow: Department of Plant Sciences, University of California—Davis, Davis, CA 95616, USA
Douglas I. Smith: Department of Ecosystem Science and Management, University of Wyoming, Laramie, WY 82071, USA
Peter D. Stahl: Department of Ecosystem Science and Management, University of Wyoming, Laramie, WY 82071, USA

Land, 2022, vol. 11, issue 4, 1-13

Abstract: Natural resource extraction has been linked to habitat loss and declines in biodiversity. Insects, the most diverse and abundant animals on Earth, provide a wide array of critical ecosystem services, but are typically understudied in terrestrial restoration projects. Here, we examine how insects and other arthropods respond to reclamation efforts in the Pinedale Anticline natural gas field in semi-arid Wyoming, USA. Vegetation on two-year-old well pads seeded with native grass or one-year-old well pads seeded with a native annual forb, Rocky Mountain bee plant ( Cleome serrulata ), was measured and compared to reference areas adjacent to the well pads with a free software program called SamplePoint. Reference areas in the Pinedale Anticline natural gas field consist primarily of decadent sagebrush stands with low floral diversity. Insect and arthropod communities were also collected and assessed for family richness and abundance on these well pads and reference areas over two years. Based on the mass flowering hypothesis, we expected higher insect abundance and diversity on well pads seeded with the Rocky Mountain bee plant compared to adjacent reference areas. Based on the plant vigor hypothesis, we expected higher insect abundance and diversity on well pads seeded with native grass than reference communities. In year one, 893 insects from 30 insect families with an additional 12 arthropods from 4 families were captured. In year two, 685 insects from 17 families were collected. Reclaimed well pads had significantly higher abundance in both years and vegetation types. In year one, we did not detect a significant difference in richness on native-grass-treated well pads vs. the reference site. We found a significant difference in richness on bee-plant-treated well pads vs. the reference in both years, as well as native-grass-treated well pads vs. the reference in year two. Implications of these findings are discussed in the manuscript.

Keywords: arthropods; ecological restoration; ecosystem services; land reclamation; mass flowering; plant vigor; pollination; revegetation; Rocky Mountain bee plant; SamplePoint (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
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