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Jan 15, 2023 1.09k likes •1.51k views

Assessing the impact of earthworms on forest ecosystems on the White Memorial Foundation. James Fischer Research Director White Memorial Conservation Center, Inc. Ecological Groups Earthworm-Free Earthworm Heavily-Impacted Jan. Feb. Mar.

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Assessing the impact of earthworms

n forest ecosystems on the

White Memorial Foundation.

James Fischer Research Director White Memorial Conservation Center, Inc.

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Ecological Groups

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Earthworm-Free Earthworm Heavily-Impacted

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Jan. Feb. Mar. Apr May Jun Jul Aug Sep Oct Nov Dec

Larvae Nymph Adult

Deer Tick Phenology

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0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 May – June Tick Abundance July Earthworm Biomass

Ave. Adults
Ave. Nymph
Ave. Larvae

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Jan. Feb. Mar. Apr May Jun Jul Aug Sep Oct Nov Dec

Larvae Nymph Adult

Deer Tick Phenology

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Food and water ad libitum Water inspected every 24 hours for 7 consecutive days

Total body burden of Ixodes scapularis on Peromyscus leucopus

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0.00 0.20 0.40 0.60 0.80 1.00 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045

Average Nymphs/Mouse Average Earthworm Biomass

Ave. Nymphs/Mouse (Late-Summer 2015)

r = 0.3988

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y = 0.126x - 0.153 R² = 0.7515

0.05

0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 1 1.5 2 2.5 3 3.5 4 4.5

Average Quadrate Biomass Average Number of Ticks in Enclosures

Enclosure Alive Average vs. Average Earthworm Biomass 2017

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