onr:"swepub:oai:DiVA.org:liu-12538"
Sökning: onr:"swepub:oai:DiVA.org:liu-12538" > Declines in predato...
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03627naa a2200361 4500 | |
| 001 | oai:DiVA.org:su-34131 | |
| 003 | SwePub | |
| 008 | 100106s2009 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-341312 URI |
| 040 | a (SwePub)su | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Eriksson, Britas Klemensu Stockholms universitet,Systemekologiska institutionen4 aut |
| 245 | 1 0 | a Declines in predatory fish promote bloom-forming macroalgae. |
| 264 | 1 | c 2009 |
| 338 | a print2 rdacarrier | |
| 520 | a In the Baltic Sea, increased dominance of ephemeral and bloom-forming algae is presently attributed to increased nutrient loads. Simultaneously, coastal predatory fish are in strong decline. Using field data from nine areas covering a 700-km coastline, we examined whether formation of macroalgal blooms could be linked to the composition of the fish community. We then tested whether predator or nutrient availability could explain the field patterns in two small-scale field experiments, by comparing joint effects on algal net production from nutrient enrichment with agricultural fertilizer and exclusion of larger predatory fish with cages. We also manipulated the presence of invertebrate grazers. The abundance of piscivorous fish had a strong negative correlation with the large-scale distribution of bloom-forming macroalgae. Areas with depleted top-predator communities displayed massive increases in their prey, small-bodied fish, and high covers of ephemeral algae. Combining the results from the two experiments showed that excluding larger piscivorous fish: (1) increased the abundance of small-bodied predatory fish; (2) changed the size distribution of the dominating grazers, decreasing the smaller gastropod scrapers; and (3) increased the net production of ephemeral macroalgae. Effects of removing top predators and nutrient enrichment were similar and additive, together increasing the abundance of ephemeral algae many times. Predator effects depended on invertebrate grazers; in the absence of invertebrates there were no significant effects of predator exclusion on algal production. Our results provide strong support for regional declines of larger predatory fish in the Baltic Sea promoting algal production by decreasing invertebrate grazer control. This highlights the importance of trophic interactions for ecosystem responses to eutrophication. The view emerges that to achieve management goals for water quality we need to consider the interplay between top-down and bottom-up processes in future ecosystem management of marine resources. | |
| 650 | 7 | a NATURVETENSKAPx Biologix Ekologi0 (SwePub)106112 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Ecology0 (SwePub)106112 hsv//eng |
| 653 | a Terrestrial, freshwater and marine ecology | |
| 653 | a Terrestrisk, limnisk och marin ekologi | |
| 700 | 1 | a Ljunggren, Larsu Swedish Board Fisheries4 aut |
| 700 | 1 | a Sandström, Alfredu Swedish Board Fisheries4 aut |
| 700 | 1 | a Johansson, Gustavu Fdn Uppland4 aut |
| 700 | 1 | a Mattila, Johannau Åbo Akad Univ4 aut |
| 700 | 1 | a Rubach, Anjau Univ Cologne4 aut |
| 700 | 1 | a Råberg, Sonjau Stockholms universitet,Botaniska institutionen4 aut |
| 700 | 1 | a Snickars, Martinu Åbo Akad Univ4 aut |
| 710 | 2 | a Stockholms universitetb Systemekologiska institutionen4 org |
| 773 | 0 | t Ecological Applicationsg 19:8, s. 1975-1988q 19:8<1975-1988x 1051-0761x 1939-5582 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-34131 |
Hitta via bibliotek
- Ecological Applications (Sök värdpublikationen i LIBRIS)
Till lärosätets databas
- 1 av 1
- Föregående post
- Nästa post
- Till träfflistan
Hitta mer i SwePub
- Av författaren/redakt...
- Eriksson, Britas ...
- Ljunggren, Lars
- Sandström, Alfre ...
- Johansson, Gusta ...
- Mattila, Johanna
- Rubach, Anja
- visa fler...
- Råberg, Sonja
- Snickars, Martin
- visa färre...
- Om ämnet
-
- NATURVETENSKAP
- NATURVETENSKAP
- och Biologi
- och Ekologi
- Artiklar i publikationen
- Ecological Appli ...
- Av lärosätet
- Stockholms universitet
Sök utanför SwePub
- Sök vidare i:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - Nationella bibliotekssystem
- LIBRIS.kb.se
