Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population
Abstract Ecosystem engineers have large impacts on the communities in which they live, and these impacts may feed back to populations of engineers themselves. In this study, we assessed the effect of ecosystem engineering on density‐dependent feedbacks for midges in Lake Mývatn, Iceland. The midge l...
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crwiley:10.1002/ecy.3513 2024-06-02T08:09:19+00:00 Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population Phillips, Joseph S. McCormick, Amanda R. Botsch, Jamieson C. Ives, Anthony R. Division of Graduate Education Division of Environmental Biology 2021 http://dx.doi.org/10.1002/ecy.3513 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3513 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecy.3513 https://esajournals.onlinelibrary.wiley.com/doi/am-pdf/10.1002/ecy.3513 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3513 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology volume 102, issue 11 ISSN 0012-9658 1939-9170 journal-article 2021 crwiley https://doi.org/10.1002/ecy.3513 2024-05-03T11:41:30Z Abstract Ecosystem engineers have large impacts on the communities in which they live, and these impacts may feed back to populations of engineers themselves. In this study, we assessed the effect of ecosystem engineering on density‐dependent feedbacks for midges in Lake Mývatn, Iceland. The midge larvae reside in the sediment and build silk tubes that provide a substrate for algal growth, thereby elevating benthic primary production. Benthic algae are in turn the primary food source for the midge larvae, setting the stage for the effects of engineering to feed back to the midges themselves. Using a field mesocosm experiment manipulating larval midge densities, we found a generally positive but nonlinear relationship between density and benthic production. Furthermore, adult emergence increased with the primary production per midge larva. By combining these two relationships in a simple model, we found that the positive effect of midges on benthic production weakened negative density dependence at low to intermediate larval densities. However, this benefit disappeared at high densities when midge consumption of primary producers exceeded their positive effects on primary production through ecosystem engineering. Our results illustrate how ecosystem engineering can alter density‐dependent feedbacks for engineer populations. Article in Journal/Newspaper Iceland Mývatn Wiley Online Library Mývatn ENVELOPE(-16.985,-16.985,65.600,65.600) Ecology 102 11 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Ecosystem engineers have large impacts on the communities in which they live, and these impacts may feed back to populations of engineers themselves. In this study, we assessed the effect of ecosystem engineering on density‐dependent feedbacks for midges in Lake Mývatn, Iceland. The midge larvae reside in the sediment and build silk tubes that provide a substrate for algal growth, thereby elevating benthic primary production. Benthic algae are in turn the primary food source for the midge larvae, setting the stage for the effects of engineering to feed back to the midges themselves. Using a field mesocosm experiment manipulating larval midge densities, we found a generally positive but nonlinear relationship between density and benthic production. Furthermore, adult emergence increased with the primary production per midge larva. By combining these two relationships in a simple model, we found that the positive effect of midges on benthic production weakened negative density dependence at low to intermediate larval densities. However, this benefit disappeared at high densities when midge consumption of primary producers exceeded their positive effects on primary production through ecosystem engineering. Our results illustrate how ecosystem engineering can alter density‐dependent feedbacks for engineer populations. |
author2 |
Division of Graduate Education Division of Environmental Biology |
format |
Article in Journal/Newspaper |
author |
Phillips, Joseph S. McCormick, Amanda R. Botsch, Jamieson C. Ives, Anthony R. |
spellingShingle |
Phillips, Joseph S. McCormick, Amanda R. Botsch, Jamieson C. Ives, Anthony R. Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population |
author_facet |
Phillips, Joseph S. McCormick, Amanda R. Botsch, Jamieson C. Ives, Anthony R. |
author_sort |
Phillips, Joseph S. |
title |
Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population |
title_short |
Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population |
title_full |
Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population |
title_fullStr |
Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population |
title_full_unstemmed |
Ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population |
title_sort |
ecosystem engineering alters density‐dependent feedbacks in an aquatic insect population |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ecy.3513 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3513 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecy.3513 https://esajournals.onlinelibrary.wiley.com/doi/am-pdf/10.1002/ecy.3513 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3513 |
long_lat |
ENVELOPE(-16.985,-16.985,65.600,65.600) |
geographic |
Mývatn |
geographic_facet |
Mývatn |
genre |
Iceland Mývatn |
genre_facet |
Iceland Mývatn |
op_source |
Ecology volume 102, issue 11 ISSN 0012-9658 1939-9170 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ecy.3513 |
container_title |
Ecology |
container_volume |
102 |
container_issue |
11 |
_version_ |
1800755017422995456 |