LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Decaying woodrat (Neotoma spp.) middens increase soil resources and accelerate decomposition of contemporary litter

Photo by theian20 from unsplash

Abstract Ecosystem engineers can have broad-reaching impacts when they alter biogeochemical pools and processes, thus affecting resource availability. In the Chihuahuan Desert, woodrats (Neotoma spp.) build stick nests on the… Click to show full abstract

Abstract Ecosystem engineers can have broad-reaching impacts when they alter biogeochemical pools and processes, thus affecting resource availability. In the Chihuahuan Desert, woodrats (Neotoma spp.) build stick nests on the soil surface within Yucca baccata patches. We assessed the impacts of these middens on the underlying soil pools. We also assessed midden impacts on litter decomposition because decomposition exerts control over soil biogeochemical pools. We specifically focused on midden activity state, selecting Yucca patches with no midden, an active midden, or a decayed midden. Soil were analyzed for organic carbon, total nitrogen, and available nitrogen. To probe a mechanistic driver of soil biogeochemical pools, we measured litter mass loss of mesquite leaflets (Proposis glandulosa) and poplar wood (Populus spp.). Soil organic carbon, total nitrogen, available nitrogen and litter decay were all enhanced in decayed midden patches. These results support observations from other species in which the environmental modifications caused by ecosystem engineers persist beyond the life of the engineer. However, in this case the impacts of ecosystem engineers on biogeochemical pools and processes were greater for engineered structures that were not being maintained than for actively maintained structures. Woodrats have long-term impacts on spatial distribution of soil resources through their persistent middens.

Keywords: decomposition; soil; biogeochemical pools; nitrogen; neotoma spp; soil resources

Journal Title: Journal of Arid Environments
Year Published: 2019

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.