2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/25/2021 | 2:00 PM - 3:30 PM | COMMUNITIES IN FLUX: THE INFLUENCE OF HYDROPERIOD ON THE ASSEMBLY AND DISASSEMBLY OF TEMPORARY POND INVERTEBRATE COMMUNITIES | Virtual Platform
COMMUNITIES IN FLUX: THE INFLUENCE OF HYDROPERIOD ON THE ASSEMBLY AND DISASSEMBLY OF TEMPORARY POND INVERTEBRATE COMMUNITIES
Aquatic invertebrate community assemblages in temporary ponds are in a constant state of change, with colonization as ponds fill and dispersal and dormancy (disassembly) as ponds dry. Within a given landscape, the hydroperiod of temporary ponds can differ so that assembly and disassembly occur over various lengths of time. Our research aims to understand how hydroperiod length influences the community structure of aquatic invertebrates in temporary ponds during the filling and drying transition periods. We studied nine temporary ponds and one permanent pond in the Willamette Valley, OR with hydroperiods ranging from four to eight months. We sampled macroinvertebrate and zooplankton communities in each pond one month after ponds began to fill and within one month of when ponds dried. We identified 57 unique insect taxa and 17 unique non-insect taxa from temporary ponds and 4 additional taxa that only occurred in the perennial pond. Non metric multidimensional scaling ordinations indicate that community turnover occurred in a characteristic manner in most temporary ponds and hydroperiod was a significant variable associated with pond community structure. Our results suggest that hydroperiod has a stronger correlation with community structure as ponds dry.
- Freshwater continuum
- Dry rivers
- Ecosystem
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Presenters/Authors
Christi Kruse
(), Oregon State University, krusech@oregonstate.edu;
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William Gerth
(), Oregon State University, william.gerth@oregonstate.edu;
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Dave Lytle
(), Oregon State University, lytleda@oregonstate.edu;
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