Diversity and Abundance of Invertebrates in Teatown's Managed and - - PowerPoint PPT Presentation

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Diversity and Abundance of Invertebrates in Teatown's Managed and - - PowerPoint PPT Presentation

Jan 18, 2023 270 likes •415 views

Diversity and Abundance of Invertebrates in Teatown's Managed and Unmanaged Meadows By Lucia Rhode White Plains High School Introduction Teatown meadow restoration project Goal: help increase the bird, insect and small mammal

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Diversity and Abundance of Invertebrates in Teatown's Managed and Unmanaged Meadows

By Lucia Rhode White Plains High School

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Introduction

  • Teatown meadow restoration project
  • Goal: help increase the bird, insect

and small mammal diversity by providing unique habitat space

  • Maintenance:
  • Removing shrubs and trees
  • Regularly mowing
  • Managing invasive species
  • Invertebrate may be useful Indicators of

condition of Meadows (Hollier et al., 2005; Korosi et al., 2011)

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Hypothesis

  • Invertebrate population of the managed meadow is more diverse and

abundant than in the unmanaged meadow

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Methodology

Pitfall traps

  • Cup in ground
  • Soapy water
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Methodology

Unmanaged Meadow Managed Meadow

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Methodology

  • Collected twice
  • Pitfall traps collected
  • ver 3 nights
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Invertebrate Count

  • Majority of invertebrates are

unknown insect

  • Managed has double the amount
  • f unknown
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Invertebrate Count w/o Unknown Insects

  • Managed Meadow:
  • Mites
  • Ants
  • Spiders
  • Unmanaged Meadow:
  • Ants
  • Orthoptera
  • Spiders
  • Isopods
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Results

  • Shannon-Weaver Diversity Index
  • Managed = 1.65+/-.11
  • Unmanaged = 1.38+/-.14
  • Managed Meadow had a

slightly higher diversity index

  • Jaccard's Similarity Index
  • About 70% similar
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Discussion

  • Slight increase in diversity in managed meadow
  • Ongoing restoration of meadow
  • Continued long term observation of invertebrate population
  • Response of insect community to restoration process is usually slow (Karg et

al., 2015)

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Acknowledgment

Thank you to Amy Karpati, Eva Thaddeus, Charlie Luisi and Erin Baker & Teatown

References

Hollier, J. A., Maczey, N., Masters, G. J., & Mortimer, S. R. (2005). Grassland Leafhoppers (Hemiptera: Auchenorrhyncha) as Indicators of Habitat Condition – A Comparison of between-site and between-year differences in Assemblage Composition. Journal of Insect Conservation, 9(4), 299-307. doi:10.1007/s10841-005-8821-z Karg, J., Kujawa, K., Manhart, C., Marschalek, H., Neugebauer, K. R., & Sachteleben, J. (2015). Restoration of Subalpine Species-Rich Grasslands: Short-TermvsLong-Term Changes in the Density and Diversity of above- Ground Insects. Polish Journal of Ecology, 63(1), 142-158. doi:10.3161/15052249pje2015.63.1.013 Kovács-Hostyánszki, A., Kőrösi, Á, Orci, K. M., Batáry, P., & Báldi, A. (2011). Set-aside promotes insect and plant diversity in a Central European

  • country. Agriculture, Ecosystems & Environment,141(3-4), 296-301.

doi:10.1016/j.agee.2011.03.004

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Diversity and Abundance of Invertebrates in Teatown's Managed and Unmanaged Meadows

By Lucia Rhode White Plains High School