Seasonal variation in Chironomid emergence from coastal pools
Understanding the phenology of emergences can be useful in determining seasonal chironomid life cycle patterns, which are often influenced by ice cover and temperature in cold climates. Lake Superior is the largest lake in North America and with a mean surface temperature of 3.9 °C influences region...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Karolinum Press
2015-07-01
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| Series: | European Journal of Environmental Sciences |
| Subjects: | |
| Online Access: | http://ejes.cz/index.php/ejes/article/view/191 |
| _version_ | 1818049310409883648 |
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| author | Alexander T. Egan Leonard C. Ferrington Jr. Toben LaFrançois Mark B. Edlund |
| author_facet | Alexander T. Egan Leonard C. Ferrington Jr. Toben LaFrançois Mark B. Edlund |
| author_sort | Alexander T. Egan |
| collection | DOAJ |
| description | Understanding the phenology of emergences can be useful in determining seasonal chironomid life cycle patterns, which are often influenced by ice cover and temperature in cold climates. Lake Superior is the largest lake in North America and with a mean surface temperature of 3.9 °C influences regional climate. Coastal pools at Isle Royale, a wilderness archipelago in the northern part of the lake, occur in dense patches on low-gradient volcanic bedrock between the lakeshore and forest, creating variable microhabitats for Chironomidae. Four sites were sampled monthly from April to October, 2010. Surface-floating pupal exuviae were collected from a series of pools in two zones: a lower zone near the lake influenced by wave splash, and an upper zone near the forest and influenced by upland runoff. We used Jaccard’s and Whittaker’s diversity indexes to test community similarity across months. Temperature loggers in pools collected hourly readings for most of the study. Assemblage emergences were stable in upper pools, with significant similarity across late spring and summer months. Assemblages were seasonally variable in lower pools, with significant dissimilarity across spring, summer, and fall months. Few species in either zone were unique to spring or fall months. However, many summer species in the splash zone had a narrow emergence period occurring during calm weather following distinct increases in mean water temperature. Regardless of input of cold lake water to the lower zone, pools from both zones generally had corresponding temperature trends. |
| first_indexed | 2024-12-10T10:35:33Z |
| format | Article |
| id | doaj.art-03b6f086b08842ecb3e5e27fec67520d |
| institution | Directory Open Access Journal |
| issn | 1805-0174 2336-1964 |
| language | English |
| last_indexed | 2024-12-10T10:35:33Z |
| publishDate | 2015-07-01 |
| publisher | Karolinum Press |
| record_format | Article |
| series | European Journal of Environmental Sciences |
| spelling | doaj.art-03b6f086b08842ecb3e5e27fec67520d2022-12-22T01:52:26ZengKarolinum PressEuropean Journal of Environmental Sciences1805-01742336-19642015-07-0151152310.14712/23361964.2015.712561Seasonal variation in Chironomid emergence from coastal poolsAlexander T. EganLeonard C. Ferrington Jr.Toben LaFrançoisMark B. EdlundUnderstanding the phenology of emergences can be useful in determining seasonal chironomid life cycle patterns, which are often influenced by ice cover and temperature in cold climates. Lake Superior is the largest lake in North America and with a mean surface temperature of 3.9 °C influences regional climate. Coastal pools at Isle Royale, a wilderness archipelago in the northern part of the lake, occur in dense patches on low-gradient volcanic bedrock between the lakeshore and forest, creating variable microhabitats for Chironomidae. Four sites were sampled monthly from April to October, 2010. Surface-floating pupal exuviae were collected from a series of pools in two zones: a lower zone near the lake influenced by wave splash, and an upper zone near the forest and influenced by upland runoff. We used Jaccard’s and Whittaker’s diversity indexes to test community similarity across months. Temperature loggers in pools collected hourly readings for most of the study. Assemblage emergences were stable in upper pools, with significant similarity across late spring and summer months. Assemblages were seasonally variable in lower pools, with significant dissimilarity across spring, summer, and fall months. Few species in either zone were unique to spring or fall months. However, many summer species in the splash zone had a narrow emergence period occurring during calm weather following distinct increases in mean water temperature. Regardless of input of cold lake water to the lower zone, pools from both zones generally had corresponding temperature trends.http://ejes.cz/index.php/ejes/article/view/191intimate partner violencepsychological abusemenspousepartnerské násilípsychické zneužívánímužipartnerkyPartnergewaltpsychologische MisshandlungMannEhemann |
| spellingShingle | Alexander T. Egan Leonard C. Ferrington Jr. Toben LaFrançois Mark B. Edlund Seasonal variation in Chironomid emergence from coastal pools European Journal of Environmental Sciences intimate partner violence psychological abuse men spouse partnerské násilí psychické zneužívání muži partnerky Partnergewalt psychologische Misshandlung Mann Ehemann |
| title | Seasonal variation in Chironomid emergence from coastal pools |
| title_full | Seasonal variation in Chironomid emergence from coastal pools |
| title_fullStr | Seasonal variation in Chironomid emergence from coastal pools |
| title_full_unstemmed | Seasonal variation in Chironomid emergence from coastal pools |
| title_short | Seasonal variation in Chironomid emergence from coastal pools |
| title_sort | seasonal variation in chironomid emergence from coastal pools |
| topic | intimate partner violence psychological abuse men spouse partnerské násilí psychické zneužívání muži partnerky Partnergewalt psychologische Misshandlung Mann Ehemann |
| url | http://ejes.cz/index.php/ejes/article/view/191 |
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