Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science Observations

Monarch butterflies (Danaus plexippus) in eastern North America must make frequent stops to rest and refuel during their annual migration. During these stopovers, monarchs form communal roosts, which are often observed by laypersons. Journey North is a citizen science program that compiles roost obs...

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Main Authors: Andrew K. Davis, Nathan P. Nibbelink, Elizabeth Howard
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:International Journal of Zoology
Online Access:http://dx.doi.org/10.1155/2012/149026
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author Andrew K. Davis
Nathan P. Nibbelink
Elizabeth Howard
author_facet Andrew K. Davis
Nathan P. Nibbelink
Elizabeth Howard
author_sort Andrew K. Davis
collection DOAJ
description Monarch butterflies (Danaus plexippus) in eastern North America must make frequent stops to rest and refuel during their annual migration. During these stopovers, monarchs form communal roosts, which are often observed by laypersons. Journey North is a citizen science program that compiles roost observations, and we examined these data in an attempt to identify habitat characteristics of roosts. From each observation we extracted information on the type of vegetation used, and we used GIS and a national landcover data set to determine land cover characteristics within a 10 km radius of the roost. Ninety-seven percent of roosts were reported on trees; most were in pines and conifers, maples, oaks, pecans and willows. Conifers and maples were used most often in northern flyway regions, while pecans and oaks were more-frequently used in southern regions. No one landcover type was directly associated with roost sites, although there was more open water near roost sites than around random sites. Roosts in southern Texas were associated primarily with grasslands, but this was not the case elsewhere. Considering the large variety of tree types used and the diversity of landcover types around roost sites, monarchs appear highly-adaptable in terms of roost site selection.
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spelling doaj-art-387b22aa55554b7b8bcc578c20de06442025-02-03T01:21:47ZengWileyInternational Journal of Zoology1687-84771687-84852012-01-01201210.1155/2012/149026149026Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science ObservationsAndrew K. Davis0Nathan P. Nibbelink1Elizabeth Howard2Odum School of Ecology, The University of Georgia, Athens, GA 30602, USAD.B. Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USAJourney North, 1321 Bragg Hill Road, Norwich, VT 05055, USAMonarch butterflies (Danaus plexippus) in eastern North America must make frequent stops to rest and refuel during their annual migration. During these stopovers, monarchs form communal roosts, which are often observed by laypersons. Journey North is a citizen science program that compiles roost observations, and we examined these data in an attempt to identify habitat characteristics of roosts. From each observation we extracted information on the type of vegetation used, and we used GIS and a national landcover data set to determine land cover characteristics within a 10 km radius of the roost. Ninety-seven percent of roosts were reported on trees; most were in pines and conifers, maples, oaks, pecans and willows. Conifers and maples were used most often in northern flyway regions, while pecans and oaks were more-frequently used in southern regions. No one landcover type was directly associated with roost sites, although there was more open water near roost sites than around random sites. Roosts in southern Texas were associated primarily with grasslands, but this was not the case elsewhere. Considering the large variety of tree types used and the diversity of landcover types around roost sites, monarchs appear highly-adaptable in terms of roost site selection.http://dx.doi.org/10.1155/2012/149026
spellingShingle Andrew K. Davis
Nathan P. Nibbelink
Elizabeth Howard
Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science Observations
International Journal of Zoology
title Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science Observations
title_full Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science Observations
title_fullStr Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science Observations
title_full_unstemmed Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science Observations
title_short Identifying Large- and Small-Scale Habitat Characteristics of Monarch Butterfly Migratory Roost Sites with Citizen Science Observations
title_sort identifying large and small scale habitat characteristics of monarch butterfly migratory roost sites with citizen science observations
url http://dx.doi.org/10.1155/2012/149026
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