uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/08eed47bc1daf328ab2e020f364e98ca Elizabeth Colburn Frances Garretson 2023 English

We have documented a large population of a rarely collected northern caddisfly, Phanocelia canadensis (Banks) (Trichoptera: Limnephilidae), on Cape Cod, Massachusetts. This species' range is generally considered to be centered in northern Canada, although there are individual records of adults from eastern Maine and New Hampshire, and a single adult was collected from Sherborn, Massachusetts, in the 1920s. The scarcity of this species in collections may reflect true rarity, with populations sparsely but widely distributed across the northern part of the continent. Alternately, it may reflect a sampling bias, in that the larvae of this species were unknown until the late 1980s, adults are diurnal and fly late in the fall, and larvae occur in wetlands and are closely associated with Sphagnum, from which they make their cases. We have carried out an in-depth habitat comparison of sites in which we found or did not find larvae on Cape Cod in seven years of intensive sampling. Habitat characteristics distinguishing wetlands with and without Phanocelia include dominance by Sphagnum sp., shrub cover, and low pH. We are currently searching in similar habitats across the state for additional populations.

biogeography conservation habitats insects life history LTER controlled vocabulary populations LTER core area Harvard Forest HFR LTER USA HFR default

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Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf093 Cape Cod MA. Coordinates based on WGS84 datum. -69.96 -69.96 +43.85 +43.85 0 6 meter 1996 2002 genus Phanocelia species canadensis complete Information Manager Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu

We sampled 17 flooded, kettle-hole wetlands in the Cape Cod National Seashore from 1996-2002. Sites were stratified by depth and vegetation and sampling locations were established randomly within each stratum. For each sample, we made a standard, 1 m x 33 cm sweep of water column, vegetation, and substrate with a D-frame aquatic net (Ward's Natural History Establishment, Rochester, NY). Net contents were decanted into a white pan filled with water and invertebrates were picked live in the field, preserved in 70 percent ethanol, and returned to the laboratory for identification. Water depth, substrate, and vegetation were recorded for each sample. Water samples were collected from all pools in spring, 1986 and 1998, by National Park Service staff. Chemical analysis was carried out by the Cape Cod National Seashore's North Atlantic Coastal Research Laboratory following standard methods for pH, alkalinity, color, dissolved oxygen, calcium, magnesium, sodium, potassium, nitrate-N, ammonium-N, and phosphate-P (American Public Health Association et al. 1985; Clesceri et al. 1998). A posteriori analysis of habitat characteristics of wetlands with and without Phanocelia canadensis involved analysis of variance of surface area, depth, water chemistry, and dominant vegetation.

Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf093-01-caddisfly.csv caddisfly habitat data hf093-01-caddisfly.csv 1092 6c881125e3baf4982255c29daf95fcc1 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p09/hf093/hf093-01-caddisfly.csv pool vernal pool code E Eastham T Truro W Wellfleet shrubs frequence of occurrence in sample quadrats (arcsine of % frequency). number 0.001 real NA missing value sphagnum frequence of occurrence in sample quadrats over study period 1996-2002 (arcsine of % frequency) number 0.001 real NA missing value color water color measurement value, 2 April 1998 (transmittance at 440 nm) number 0.001 real NA missing value ph water pH, 2 April 1998 (negative log of [H+]) number .01 real NA missing value alkalinity alkalinity (Log [concentration in mg/L + 1] as CaCO3) number .0001 real NA missing value sp.cond specific conductance (uS/cm) microsiemensPerCentimeter 0.001 real NA missing value nh4 ammonium concentration (Log [concentration in uMoles/l + 1]) micromolePerLiter 0.001 real NA missing value po4 total phosphate concentration (Log [concentration in uMoles/l as CaCO3 + 1]) micromolePerLiter 0.001 real NA missing value no3 nitrate concentration (Log [concentration in uMoles/L + 1]) micromolePerLiter 0.001 real NA missing value area surface area when pool is maximally flooded squareMeter 1 whole NA missing value 17 regional watershed short-term measurement microsiemensPerCentimeter