Consumer–resource dynamics in Arctic ponds
Abstract Population dynamics are shaped by species interactions with resources, competitors, enemies, and environmental fluctuations that alter the strength of these interactions. We used a food web approach to investigate the population dynamics of an abundant Arctic mosquito species, Aedes nigripe...
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Online Access: | http://dx.doi.org/10.1002/ecy.3135 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fecy.3135 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3135 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecy.3135 https://esajournals.onlinelibrary.wiley.com/doi/am-pdf/10.1002/ecy.3135 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3135 |
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crwiley:10.1002/ecy.3135 2024-06-02T08:01:59+00:00 Consumer–resource dynamics in Arctic ponds DeSiervo, Melissa H. Ayres, Matthew P. Virginia, Ross A. Culler, Lauren E. 2020 http://dx.doi.org/10.1002/ecy.3135 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fecy.3135 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3135 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecy.3135 https://esajournals.onlinelibrary.wiley.com/doi/am-pdf/10.1002/ecy.3135 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3135 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology volume 101, issue 10 ISSN 0012-9658 1939-9170 journal-article 2020 crwiley https://doi.org/10.1002/ecy.3135 2024-05-03T10:42:29Z Abstract Population dynamics are shaped by species interactions with resources, competitors, enemies, and environmental fluctuations that alter the strength of these interactions. We used a food web approach to investigate the population dynamics of an abundant Arctic mosquito species, Aedes nigripes (Diptera: Culicidae). Specifically, we evaluated the importance of bottom‐up variation in aquatic biofilms (food) and top‐down predation from diving beetles ( Colymbetes dolabratus , Coleoptera: Dytiscidae) on mosquito population performance. In spring 2018, we tracked mosquito and predator populations across eight ponds in western Greenland, measured biofilm productivity with standardized samplers, and estimated grazing pressure by invertebrate consumers with an in situ exclosure experiment. We also assessed the quality of biofilms as nutrition for mosquito larvae and evaluated pond attributes that might influence biofilm productivity and food quality. Our results indicated that mosquito population dynamics were more related to resource quality and intraspecific competition than to the density of predaceous diving beetles. Ponds with better quality biofilm tended to have more hatching larvae and those populations experienced higher per capita mortality. This aggregation of larvae in what would otherwise be the best mosquito ponds was enough to produce relatively low fitness. Thus, the landscape would support more mosquitoes if they instead distributed themselves to match predictions of the ideal free distribution. Although mortality rates were highest in ponds with the highest initial densities, the increased mortality was not generally enough to compensate for initial abundance, and 78% of the variation in the density of mosquitoes emerging from ponds was explained by the initial number of larvae in a pond. Resource quality was a strong predictor of consumer abundance, yet there was no evidence that biofilm grazing pressure was greater in ponds where mosquito density was higher. Collectively, our results suggest ... Article in Journal/Newspaper Arctic Greenland Wiley Online Library Arctic Greenland Ecology 101 10 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Population dynamics are shaped by species interactions with resources, competitors, enemies, and environmental fluctuations that alter the strength of these interactions. We used a food web approach to investigate the population dynamics of an abundant Arctic mosquito species, Aedes nigripes (Diptera: Culicidae). Specifically, we evaluated the importance of bottom‐up variation in aquatic biofilms (food) and top‐down predation from diving beetles ( Colymbetes dolabratus , Coleoptera: Dytiscidae) on mosquito population performance. In spring 2018, we tracked mosquito and predator populations across eight ponds in western Greenland, measured biofilm productivity with standardized samplers, and estimated grazing pressure by invertebrate consumers with an in situ exclosure experiment. We also assessed the quality of biofilms as nutrition for mosquito larvae and evaluated pond attributes that might influence biofilm productivity and food quality. Our results indicated that mosquito population dynamics were more related to resource quality and intraspecific competition than to the density of predaceous diving beetles. Ponds with better quality biofilm tended to have more hatching larvae and those populations experienced higher per capita mortality. This aggregation of larvae in what would otherwise be the best mosquito ponds was enough to produce relatively low fitness. Thus, the landscape would support more mosquitoes if they instead distributed themselves to match predictions of the ideal free distribution. Although mortality rates were highest in ponds with the highest initial densities, the increased mortality was not generally enough to compensate for initial abundance, and 78% of the variation in the density of mosquitoes emerging from ponds was explained by the initial number of larvae in a pond. Resource quality was a strong predictor of consumer abundance, yet there was no evidence that biofilm grazing pressure was greater in ponds where mosquito density was higher. Collectively, our results suggest ... |
format |
Article in Journal/Newspaper |
author |
DeSiervo, Melissa H. Ayres, Matthew P. Virginia, Ross A. Culler, Lauren E. |
spellingShingle |
DeSiervo, Melissa H. Ayres, Matthew P. Virginia, Ross A. Culler, Lauren E. Consumer–resource dynamics in Arctic ponds |
author_facet |
DeSiervo, Melissa H. Ayres, Matthew P. Virginia, Ross A. Culler, Lauren E. |
author_sort |
DeSiervo, Melissa H. |
title |
Consumer–resource dynamics in Arctic ponds |
title_short |
Consumer–resource dynamics in Arctic ponds |
title_full |
Consumer–resource dynamics in Arctic ponds |
title_fullStr |
Consumer–resource dynamics in Arctic ponds |
title_full_unstemmed |
Consumer–resource dynamics in Arctic ponds |
title_sort |
consumer–resource dynamics in arctic ponds |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/ecy.3135 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fecy.3135 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3135 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecy.3135 https://esajournals.onlinelibrary.wiley.com/doi/am-pdf/10.1002/ecy.3135 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecy.3135 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland |
genre_facet |
Arctic Greenland |
op_source |
Ecology volume 101, issue 10 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.3135 |
container_title |
Ecology |
container_volume |
101 |
container_issue |
10 |
_version_ |
1800746484578123776 |