Is It the Same Every Summer for the Euphausiids of the Ross Sea?
The pelagic ecosystem in the Ross Sea has one central component that is very important for energy exchanges between upper and lower trophic levels: the Middle Trophic Level. Krill species are the most important and abundant organisms within this level. Several acoustic surveys were conducted in the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Diversity |
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| Online Access: | https://www.mdpi.com/1424-2818/14/6/433 |
| _version_ | 1797488199889584128 |
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| author | Andrea De Felice Ilaria Biagiotti Giovanni Canduci Ilaria Costantini Sara Malavolti Giordano Giuliani Iole Leonori |
| author_facet | Andrea De Felice Ilaria Biagiotti Giovanni Canduci Ilaria Costantini Sara Malavolti Giordano Giuliani Iole Leonori |
| author_sort | Andrea De Felice |
| collection | DOAJ |
| description | The pelagic ecosystem in the Ross Sea has one central component that is very important for energy exchanges between upper and lower trophic levels: the Middle Trophic Level. Krill species are the most important and abundant organisms within this level. Several acoustic surveys were conducted in the western Ross Sea over the past 25 years, revealing that <i>Euphausia superba</i> is by far the most abundant species of krill in the Ross Sea during austral summer, and that its core distribution is concentrated in the northern part, bordering the Southern Ocean. <i>Euphausia crsytallorophias</i>, the second most abundant krill species, is more concentrated in the central Ross Sea, generally near the coast. Data on krill biomass were collected in December and January from 1994 to 2016 and analyzed together with key environmental parameters by means of two-way ANOVA in order to explain species behavior and identify possible environmental drivers. Temperature and dissolved oxygen influenced the biomass of both species of krill, while other environmental parameters only affected one species. In conclusion, the biomass of both species has varied over the years, possibly due to a complex synergy of environmental drivers. |
| first_indexed | 2024-03-09T23:59:38Z |
| format | Article |
| id | doaj.art-b8d969749a934f10ba327430dac4c633 |
| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-09T23:59:38Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diversity |
| spelling | doaj.art-b8d969749a934f10ba327430dac4c6332023-11-23T16:19:58ZengMDPI AGDiversity1424-28182022-05-0114643310.3390/d14060433Is It the Same Every Summer for the Euphausiids of the Ross Sea?Andrea De Felice0Ilaria Biagiotti1Giovanni Canduci2Ilaria Costantini3Sara Malavolti4Giordano Giuliani5Iole Leonori6National Research Council (CNR), IRBIM-Institute for Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 1, 60125 Ancona, ItalyNational Research Council (CNR), IRBIM-Institute for Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 1, 60125 Ancona, ItalyNational Research Council (CNR), IRBIM-Institute for Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 1, 60125 Ancona, ItalyNational Research Council (CNR), IRBIM-Institute for Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 1, 60125 Ancona, ItalyNational Research Council (CNR), IRBIM-Institute for Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 1, 60125 Ancona, ItalyNational Research Council (CNR), IRBIM-Institute for Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 1, 60125 Ancona, ItalyNational Research Council (CNR), IRBIM-Institute for Marine Biological Resources and Biotechnologies, Largo Fiera della Pesca, 1, 60125 Ancona, ItalyThe pelagic ecosystem in the Ross Sea has one central component that is very important for energy exchanges between upper and lower trophic levels: the Middle Trophic Level. Krill species are the most important and abundant organisms within this level. Several acoustic surveys were conducted in the western Ross Sea over the past 25 years, revealing that <i>Euphausia superba</i> is by far the most abundant species of krill in the Ross Sea during austral summer, and that its core distribution is concentrated in the northern part, bordering the Southern Ocean. <i>Euphausia crsytallorophias</i>, the second most abundant krill species, is more concentrated in the central Ross Sea, generally near the coast. Data on krill biomass were collected in December and January from 1994 to 2016 and analyzed together with key environmental parameters by means of two-way ANOVA in order to explain species behavior and identify possible environmental drivers. Temperature and dissolved oxygen influenced the biomass of both species of krill, while other environmental parameters only affected one species. In conclusion, the biomass of both species has varied over the years, possibly due to a complex synergy of environmental drivers.https://www.mdpi.com/1424-2818/14/6/433krillmarine acousticsbiomassspatial distributionenvironmental data |
| spellingShingle | Andrea De Felice Ilaria Biagiotti Giovanni Canduci Ilaria Costantini Sara Malavolti Giordano Giuliani Iole Leonori Is It the Same Every Summer for the Euphausiids of the Ross Sea? Diversity krill marine acoustics biomass spatial distribution environmental data |
| title | Is It the Same Every Summer for the Euphausiids of the Ross Sea? |
| title_full | Is It the Same Every Summer for the Euphausiids of the Ross Sea? |
| title_fullStr | Is It the Same Every Summer for the Euphausiids of the Ross Sea? |
| title_full_unstemmed | Is It the Same Every Summer for the Euphausiids of the Ross Sea? |
| title_short | Is It the Same Every Summer for the Euphausiids of the Ross Sea? |
| title_sort | is it the same every summer for the euphausiids of the ross sea |
| topic | krill marine acoustics biomass spatial distribution environmental data |
| url | https://www.mdpi.com/1424-2818/14/6/433 |
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