Impacts of eutrophication and oil spills on the Gulf of Finland herring stock

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Kuvaus

The Baltic Sea is one of the world's most stressed sea areas. Major threats to the ecosystem include eutrophication and oil spills. The progression of anthropogenic nutrient enrichment is lengthy and gradual, while oil spills cause rapid changes in the system, with varying impact time. We quantify the impact of eutrophication and the key ecological covariates on the population dynamics of the major pelagic fish stock, the Baltic herring (Clupea harengus membras), in the Gulf of Finland. The full life cycle of herring is represented with a probabilistic state-space model. Moreover, we analyse the impact of the oil spill from M/T Antonio Gramsci in 1987 on herring survival. The results confirm impact of the spill on the early life-stage survival; the observed high frequency of malformed herring larvae in surveys signaled elevated mortality of the year class. The optimal July-August chlorophyll a concentration for herring reproduction is approximately 5 mu g.L-1. This level is currently exceeded, suggesting recruitment impairment due to eutrophication. The herring stock was also recruitment-overfished. Analysis suggests deceleration of herring growth as salinity descends below 6 psu.
Alkuperäiskielienglanti
LehtiCanadian Journal of Fisheries and Aquatic Sciences
Vuosikerta74
Numero8
Sivut1218-1232
Sivumäärä15
ISSN0706-652X
DOI - pysyväislinkit
TilaJulkaistu - 2017
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 1172 Ympäristötiede
  • CLUPEA-HARENGUS-MEMBRAS
  • NORTHERN BALTIC SEA
  • POPULATION IMPACTS
  • GAUSSIAN-PROCESSES
  • NATURAL MORTALITY
  • MARINE ECOSYSTEMS
  • COASTAL WATERS
  • MANAGEMENT
  • GROWTH
  • FISH

Lainaa tätä

@article{e03768cfa6554363be933f60fa3aeef3,
title = "Impacts of eutrophication and oil spills on the Gulf of Finland herring stock",
abstract = "The Baltic Sea is one of the world's most stressed sea areas. Major threats to the ecosystem include eutrophication and oil spills. The progression of anthropogenic nutrient enrichment is lengthy and gradual, while oil spills cause rapid changes in the system, with varying impact time. We quantify the impact of eutrophication and the key ecological covariates on the population dynamics of the major pelagic fish stock, the Baltic herring (Clupea harengus membras), in the Gulf of Finland. The full life cycle of herring is represented with a probabilistic state-space model. Moreover, we analyse the impact of the oil spill from M/T Antonio Gramsci in 1987 on herring survival. The results confirm impact of the spill on the early life-stage survival; the observed high frequency of malformed herring larvae in surveys signaled elevated mortality of the year class. The optimal July-August chlorophyll a concentration for herring reproduction is approximately 5 mu g.L-1. This level is currently exceeded, suggesting recruitment impairment due to eutrophication. The herring stock was also recruitment-overfished. Analysis suggests deceleration of herring growth as salinity descends below 6 psu.",
keywords = "1172 Environmental sciences, CLUPEA-HARENGUS-MEMBRAS , NORTHERN BALTIC SEA , POPULATION IMPACTS , GAUSSIAN-PROCESSES , NATURAL MORTALITY , MARINE ECOSYSTEMS , COASTAL WATERS , MANAGEMENT , GROWTH , FISH",
author = "Rahikainen, {Mika Kalevi} and Kirsi-Maaria Hoviniemi and M{\"a}ntyniemi, {Samu Henrik Petteri} and Vanhatalo, {Jarno Petteri} and Helle, {Satu Inari} and Maiju Lehtiniemi and Jukka P{\"o}nni and Kuikka, {Olli Sakari}",
year = "2017",
doi = "10.1139/cjfas-2016-0108",
language = "English",
volume = "74",
pages = "1218--1232",
journal = "Canadian Journal of Fisheries and Aquatic Sciences",
issn = "0706-652X",
publisher = "NRC RESEARCH PRESS",
number = "8",

}

Impacts of eutrophication and oil spills on the Gulf of Finland herring stock. / Rahikainen, Mika Kalevi; Hoviniemi, Kirsi-Maaria; Mäntyniemi, Samu Henrik Petteri; Vanhatalo, Jarno Petteri; Helle, Satu Inari; Lehtiniemi, Maiju; Pönni, Jukka; Kuikka, Olli Sakari.

julkaisussa: Canadian Journal of Fisheries and Aquatic Sciences, Vuosikerta 74, Nro 8, 2017, s. 1218-1232.

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - Impacts of eutrophication and oil spills on the Gulf of Finland herring stock

AU - Rahikainen, Mika Kalevi

AU - Hoviniemi, Kirsi-Maaria

AU - Mäntyniemi, Samu Henrik Petteri

AU - Vanhatalo, Jarno Petteri

AU - Helle, Satu Inari

AU - Lehtiniemi, Maiju

AU - Pönni, Jukka

AU - Kuikka, Olli Sakari

PY - 2017

Y1 - 2017

N2 - The Baltic Sea is one of the world's most stressed sea areas. Major threats to the ecosystem include eutrophication and oil spills. The progression of anthropogenic nutrient enrichment is lengthy and gradual, while oil spills cause rapid changes in the system, with varying impact time. We quantify the impact of eutrophication and the key ecological covariates on the population dynamics of the major pelagic fish stock, the Baltic herring (Clupea harengus membras), in the Gulf of Finland. The full life cycle of herring is represented with a probabilistic state-space model. Moreover, we analyse the impact of the oil spill from M/T Antonio Gramsci in 1987 on herring survival. The results confirm impact of the spill on the early life-stage survival; the observed high frequency of malformed herring larvae in surveys signaled elevated mortality of the year class. The optimal July-August chlorophyll a concentration for herring reproduction is approximately 5 mu g.L-1. This level is currently exceeded, suggesting recruitment impairment due to eutrophication. The herring stock was also recruitment-overfished. Analysis suggests deceleration of herring growth as salinity descends below 6 psu.

AB - The Baltic Sea is one of the world's most stressed sea areas. Major threats to the ecosystem include eutrophication and oil spills. The progression of anthropogenic nutrient enrichment is lengthy and gradual, while oil spills cause rapid changes in the system, with varying impact time. We quantify the impact of eutrophication and the key ecological covariates on the population dynamics of the major pelagic fish stock, the Baltic herring (Clupea harengus membras), in the Gulf of Finland. The full life cycle of herring is represented with a probabilistic state-space model. Moreover, we analyse the impact of the oil spill from M/T Antonio Gramsci in 1987 on herring survival. The results confirm impact of the spill on the early life-stage survival; the observed high frequency of malformed herring larvae in surveys signaled elevated mortality of the year class. The optimal July-August chlorophyll a concentration for herring reproduction is approximately 5 mu g.L-1. This level is currently exceeded, suggesting recruitment impairment due to eutrophication. The herring stock was also recruitment-overfished. Analysis suggests deceleration of herring growth as salinity descends below 6 psu.

KW - 1172 Environmental sciences

KW - CLUPEA-HARENGUS-MEMBRAS

KW - NORTHERN BALTIC SEA

KW - POPULATION IMPACTS

KW - GAUSSIAN-PROCESSES

KW - NATURAL MORTALITY

KW - MARINE ECOSYSTEMS

KW - COASTAL WATERS

KW - MANAGEMENT

KW - GROWTH

KW - FISH

U2 - 10.1139/cjfas-2016-0108

DO - 10.1139/cjfas-2016-0108

M3 - Article

VL - 74

SP - 1218

EP - 1232

JO - Canadian Journal of Fisheries and Aquatic Sciences

JF - Canadian Journal of Fisheries and Aquatic Sciences

SN - 0706-652X

IS - 8

ER -