Kelp forest loss and emergence of turf algae reshapes energy flow to predators in a rapidly warming ecosystem.
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PubMed
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| Autori principali: | , , , |
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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Science advances
2025
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| _version_ | 1868266193699209216 |
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| author | Yiu, Dara S Elliott Smith, Emma A Farrell, Shane P Rasher, Douglas B |
| author_facet | Yiu, Dara S Elliott Smith, Emma A Farrell, Shane P Rasher, Douglas B Yiu, Dara S Elliott Smith, Emma A Farrell, Shane P Rasher, Douglas B |
| collection | PubMed - marine biology |
| contents | Kelp forest loss and emergence of turf algae reshapes energy flow to predators in a rapidly warming ecosystem. Yiu, Dara S Elliott Smith, Emma A Farrell, Shane P Rasher, Douglas B Kelp Animals Ecosystem Food Chain Fishes Climate Change Predatory Behavior Energy Metabolism Climate change is decimating habitat-forming species in ecosystems around the world. Yet, the impacts of habitat loss on the energetics of the wider food web remain uncertain for many iconic ecosystems, including cold-water kelp forests. Here, we assessed how the loss of kelp forests and the subsequent proliferation of low-lying turf algae in the Gulf of Maine have altered the trophic niches of, and energy acquired by, predatory reef fishes. Bulk tissue C and N analysis showed that fishes in kelp forests had larger trophic niches and greater interspecific niche separation than fishes on turf reefs. Moreover, C analysis of essential amino acids revealed that kelp-derived energy accounted for most of the energy used by kelp forest fishes (> 50% on average), whereas fishes on turf reefs compensated for kelp decline via greater reliance on a phytoplankton-based energy channel. Therefore, ecosystem state shifts to turf algae-now a global phenomenon-may have far-reaching impacts on food web energetics and resilience. |
| format | Artículo científico |
| id | pubmed_40479057 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Science advances |
| record_format | pubmed |
| spellingShingle | Kelp forest loss and emergence of turf algae reshapes energy flow to predators in a rapidly warming ecosystem. Yiu, Dara S Elliott Smith, Emma A Farrell, Shane P Rasher, Douglas B Kelp Animals Ecosystem Food Chain Fishes Climate Change Predatory Behavior Energy Metabolism Kelp forest loss and emergence of turf algae reshapes energy flow to predators in a rapidly warming ecosystem. Yiu, Dara S Elliott Smith, Emma A Farrell, Shane P Rasher, Douglas B Kelp Animals Ecosystem Food Chain Fishes Climate Change Predatory Behavior Energy Metabolism Climate change is decimating habitat-forming species in ecosystems around the world. Yet, the impacts of habitat loss on the energetics of the wider food web remain uncertain for many iconic ecosystems, including cold-water kelp forests. Here, we assessed how the loss of kelp forests and the subsequent proliferation of low-lying turf algae in the Gulf of Maine have altered the trophic niches of, and energy acquired by, predatory reef fishes. Bulk tissue C and N analysis showed that fishes in kelp forests had larger trophic niches and greater interspecific niche separation than fishes on turf reefs. Moreover, C analysis of essential amino acids revealed that kelp-derived energy accounted for most of the energy used by kelp forest fishes (> 50% on average), whereas fishes on turf reefs compensated for kelp decline via greater reliance on a phytoplankton-based energy channel. Therefore, ecosystem state shifts to turf algae-now a global phenomenon-may have far-reaching impacts on food web energetics and resilience. |
| title | Kelp forest loss and emergence of turf algae reshapes energy flow to predators in a rapidly warming ecosystem. |
| topic | Kelp Animals Ecosystem Food Chain Fishes Climate Change Predatory Behavior Energy Metabolism |
| url | https://pubmed.ncbi.nlm.nih.gov/40479057/ |