Seabird nutrient subsidies alter patterns of algal abundance and fish biomass on coral reefs following a bleaching event

© 2019 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 25(2019), 8 vom: 27. Aug., Seite 2619-2632
1. Verfasser: Benkwitt, Cassandra E (VerfasserIn)
Weitere Verfasser: Wilson, Shaun K, Graham, Nicholas A J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't allochthonous input climate change coral bleaching disturbance invasive species rats reef fish resilience Nutrients
LEADER 01000naa a22002652 4500
001 NLM297754742
003 DE-627
005 20231225092701.0
007 cr uuu---uuuuu
008 231225s2019 xx |||||o 00| ||eng c
024 7 |a 10.1111/gcb.14643  |2 doi 
028 5 2 |a pubmed24n0992.xml 
035 |a (DE-627)NLM297754742 
035 |a (NLM)31157944 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Benkwitt, Cassandra E  |e verfasserin  |4 aut 
245 1 0 |a Seabird nutrient subsidies alter patterns of algal abundance and fish biomass on coral reefs following a bleaching event 
264 1 |c 2019 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Completed 11.10.2019 
500 |a Date Revised 11.10.2019 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a © 2019 John Wiley & Sons Ltd. 
520 |a Cross-ecosystem nutrient subsidies play a key role in the structure and dynamics of recipient communities, but human activities are disrupting these links. Because nutrient subsidies may also enhance community stability, the effects of losing these inputs may be exacerbated in the face of increasing climate-related disturbances. Nutrients from seabirds nesting on oceanic islands enhance the productivity and functioning of adjacent coral reefs, but it is unknown whether these subsidies affect the response of coral reefs to mass bleaching events or whether the benefits of these nutrients persist following bleaching. To answer these questions, we surveyed benthic organisms and fishes around islands with seabirds and nearby islands without seabirds due to the presence of invasive rats. Surveys were conducted in the Chagos Archipelago, Indian Ocean, immediately before the 2015-2016 mass bleaching event and, in 2018, two years following the bleaching event. Regardless of the presence of seabirds, relative coral cover declined by 32%. However, there was a post-bleaching shift in benthic community structure around islands with seabirds, which did not occur around islands with invasive rats, characterized by increases in two types of calcareous algae (crustose coralline algae [CCA] and Halimeda spp.). All feeding groups of fishes were positively affected by seabirds, but only herbivores and piscivores were unaffected by the bleaching event and sustained the greatest difference in biomass between islands with seabirds versus those with invasive rats. By contrast, corallivores and planktivores, both of which are coral-dependent, experienced the greatest losses following bleaching. Even though seabird nutrients did not enhance community-wide resistance to bleaching, they may still promote recovery of these reefs through their positive influence on CCA and herbivorous fishes. More broadly, the maintenance of nutrient subsidies, via strategies including eradication of invasive predators, may be important in shaping the response of ecological communities to global climate change 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a allochthonous input 
650 4 |a climate change 
650 4 |a coral bleaching 
650 4 |a disturbance 
650 4 |a invasive species 
650 4 |a rats 
650 4 |a reef fish 
650 4 |a resilience 
650 7 |a Nutrients  |2 NLM 
700 1 |a Wilson, Shaun K  |e verfasserin  |4 aut 
700 1 |a Graham, Nicholas A J  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Global change biology  |d 1999  |g 25(2019), 8 vom: 27. Aug., Seite 2619-2632  |w (DE-627)NLM098239996  |x 1365-2486  |7 nnns 
773 1 8 |g volume:25  |g year:2019  |g number:8  |g day:27  |g month:08  |g pages:2619-2632 
856 4 0 |u http://dx.doi.org/10.1111/gcb.14643  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 25  |j 2019  |e 8  |b 27  |c 08  |h 2619-2632