Clipping stimulates productivity but not diversity in improved and semi-natural pastures in temperate Japan

Takehiro Sasaki, Yu Yoshihara, Yoshihisa Suyama, Tohru Nakashizuka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Recently, there has been increasing concern about the value of semi-natural pasture for maintaining biodiversity. However, because of a lack of agro-ecological assessments, farmers still believe that semi-natural pasture is less productive than "improved" pasture dominated by exotic pasture grasses. To develop a compromise solution that ensures both productivity and biodiversity conservation in agro-pastoral ecosystems, we compared the degree of grazing optimization and diversity enhancement by grazing between improved and semi-natural pastures in temperate Japan. We analyzed the responses of plant growth and biodiversity to clipping treatments (maintaining sward heights of 5 or 15. cm) that simulated grazing. Aboveground productivity was stimulated by clipping treatment on both improved and semi-natural pastures (a 2- and 1.5-fold increase, respectively), indicating that both pasture types can be productive from an agricultural perspective. Although species richness was not influenced by clipping treatment or pasture type, the semi-natural pasture contained more species (34 vs. 20) than the improved pasture, thus demonstrating the value of semi-natural pasture for creating a potentially biologically diverse habitat. Our results thus offer some empirical evidence for farmers and agroecologists to support the utility of semi-natural pasture as an alternative sustainable grazing system from both agricultural and biodiversity conservation perspectives.

Original languageEnglish
Pages (from-to)428-431
Number of pages4
JournalAgriculture, Ecosystems and Environment
Volume142
Issue number3-4
DOIs
Publication statusPublished - 2011 Aug

Keywords

  • Agroecosystems
  • Functional biodiversity
  • Grazing-optimization hypothesis
  • Low-input grazing
  • Species richness

ASJC Scopus subject areas

  • Ecology
  • Animal Science and Zoology
  • Agronomy and Crop Science

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