Environmental effects of fish introductions in small, high-latitude lakes
Fish introductions have been a common practice for thousands of years but only relatively the attention has focused on their ecosystem effects. Using a combination of paleo- and neo-limnological methods, we tried to unravel the trophic effects of such introductions in small, high-latitude and origin...
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Online Access: | https://doi.org/10.3389/conf.FMARS.2015.03.00238 https://doaj.org/article/c25a1fb2832c4d9fa8ab649576c00255 |
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ftdoajarticles:oai:doaj.org/article:c25a1fb2832c4d9fa8ab649576c00255 2023-05-15T17:42:33+02:00 Environmental effects of fish introductions in small, high-latitude lakes Marco Milardi 2015-12-01T00:00:00Z https://doi.org/10.3389/conf.FMARS.2015.03.00238 https://doaj.org/article/c25a1fb2832c4d9fa8ab649576c00255 EN eng Frontiers Media S.A. http://journal.frontiersin.org/Journal/10.3389/conf.FMARS.2015.03.00238/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/conf.FMARS.2015.03.00238 https://doaj.org/article/c25a1fb2832c4d9fa8ab649576c00255 Frontiers in Marine Science, Vol 2 (2015) Introduced Species Limnology Stable isotopes palaeolimnology fish ecology Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2015 ftdoajarticles https://doi.org/10.3389/conf.FMARS.2015.03.00238 2022-12-30T22:38:20Z Fish introductions have been a common practice for thousands of years but only relatively the attention has focused on their ecosystem effects. Using a combination of paleo- and neo-limnological methods, we tried to unravel the trophic effects of such introductions in small, high-latitude and originally fishless lakes of northern Finland. These kinds of lakes constitute the numeric majority of world lakes and play a key role in global carbon and nutrient cycling. We focused on terrestrial energy utilization, seasonality of resources, trophic cascade effects and nutrient carbon cycle alterations. Present trophic interactions were investigated mainly with stable isotopes but also with fatty acids. Past trophic interactions were investigated with palaeo-proxies such as diatoms, pigments and Cladocera. We found that introduced fish relied heavily on terrestrial sources and exhibited seasonal patterns. Fish introduction cascaded through the food web and its effect could be tracked with the primary consumers. However, albeit our models predicted a significant eutrophication effect the lake trophic state did not change but rather primary production shifted from benthic to pelagic. Article in Journal/Newspaper Northern Finland Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 2 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Introduced Species Limnology Stable isotopes palaeolimnology fish ecology Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Introduced Species Limnology Stable isotopes palaeolimnology fish ecology Science Q General. Including nature conservation geographical distribution QH1-199.5 Marco Milardi Environmental effects of fish introductions in small, high-latitude lakes |
topic_facet |
Introduced Species Limnology Stable isotopes palaeolimnology fish ecology Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Fish introductions have been a common practice for thousands of years but only relatively the attention has focused on their ecosystem effects. Using a combination of paleo- and neo-limnological methods, we tried to unravel the trophic effects of such introductions in small, high-latitude and originally fishless lakes of northern Finland. These kinds of lakes constitute the numeric majority of world lakes and play a key role in global carbon and nutrient cycling. We focused on terrestrial energy utilization, seasonality of resources, trophic cascade effects and nutrient carbon cycle alterations. Present trophic interactions were investigated mainly with stable isotopes but also with fatty acids. Past trophic interactions were investigated with palaeo-proxies such as diatoms, pigments and Cladocera. We found that introduced fish relied heavily on terrestrial sources and exhibited seasonal patterns. Fish introduction cascaded through the food web and its effect could be tracked with the primary consumers. However, albeit our models predicted a significant eutrophication effect the lake trophic state did not change but rather primary production shifted from benthic to pelagic. |
format |
Article in Journal/Newspaper |
author |
Marco Milardi |
author_facet |
Marco Milardi |
author_sort |
Marco Milardi |
title |
Environmental effects of fish introductions in small, high-latitude lakes |
title_short |
Environmental effects of fish introductions in small, high-latitude lakes |
title_full |
Environmental effects of fish introductions in small, high-latitude lakes |
title_fullStr |
Environmental effects of fish introductions in small, high-latitude lakes |
title_full_unstemmed |
Environmental effects of fish introductions in small, high-latitude lakes |
title_sort |
environmental effects of fish introductions in small, high-latitude lakes |
publisher |
Frontiers Media S.A. |
publishDate |
2015 |
url |
https://doi.org/10.3389/conf.FMARS.2015.03.00238 https://doaj.org/article/c25a1fb2832c4d9fa8ab649576c00255 |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
Frontiers in Marine Science, Vol 2 (2015) |
op_relation |
http://journal.frontiersin.org/Journal/10.3389/conf.FMARS.2015.03.00238/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/conf.FMARS.2015.03.00238 https://doaj.org/article/c25a1fb2832c4d9fa8ab649576c00255 |
op_doi |
https://doi.org/10.3389/conf.FMARS.2015.03.00238 |
container_title |
Frontiers in Marine Science |
container_volume |
2 |
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1766144430974173184 |