Seabird nutrient subsidy alters size and resource use of functionally important mangrove macroinvertebrates DOI Creative Commons
Jennifer Appoo, Nicholas A. J. Graham, Christopher Jones

et al.

Ecosphere, Journal Year: 2024, Volume and Issue: 15(12)

Published: Dec. 1, 2024

Abstract Invertebrates have a central role in food webs and ecosystem functioning. By boosting productivity, allochthonous nutrient inputs influence the of recipient communities. Understanding how subsidies affect invertebrates is crucial, particularly highly productive coastal areas. Here, we examine mangrove macroinvertebrates are impacted by nutrient‐rich guano delivered nesting seabird populations at Aldabra Atoll Indian Ocean. We compare nitrogen carbon stable isotope ratios composition basal resources macroinvertebrate consumers mangroves with without seabirds. Seabird‐derived enrichment increased content sources herbivorous littorinid gastropods sesarmid crabs. In breeding seabirds, mean carapace widths omnivorous portunid crabs were 6% 11% larger, respectively. Isotopic niches larger had higher overlap compared to non‐seabird sites. Epiphytic macroalgae comprised >50% resource contributions This differed markedly from sites where main 77% leaves for gastropods, 36% sediment organic matter, 41% The sizes suggest that can promote crab fisheries productivity benefit provisioning services. shifting use functionally important macroinvertebrates, discuss seabirds modify trophic interactions, potential consequences processes resilience.

Language: Английский

Atolls are globally important sites for tropical seabirds DOI
Sebastian Steibl, Simon Steiger, Alex Wegmann

et al.

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(10), P. 1907 - 1915

Published: Aug. 15, 2024

Language: Английский

Citations

4
Assessing blue carbon in mangrove ecosystems of Seychelles DOI Creative Commons
Melissa Wartman, Maria M. Palacios,

Barry Nourice

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 374, P. 123967 - 123967

Published: Jan. 9, 2025

Language: Английский

Citations

0
A Renaissance of Atoll Ecology DOI Creative Commons
Sebastian Steibl, Nancy Bunbury, Hillary S. Young

et al.

Annual Review of Ecology Evolution and Systematics, Journal Year: 2024, Volume and Issue: 55(1), P. 301 - 322

Published: Nov. 4, 2024

The approximately 320 atolls of the world, scattered across tropical oceanic basins, constitute a unique type ecosystem in that they are each an integrated unit consisting island, coral reef, and lagoon components. Atolls have complex geology, ecology, biogeography, which can be fully appreciated only by transcending classic boundary thinking marine terrestrial realms. we observe today were shaped Quaternary sea-level fluctuations, imposed strong environmental filters on their communities. As entirely biogenic, reef-borne structures, islands depend upon productivity, catalyzes island community assembly. Island species communities exist dynamic equilibria with surrounding oceanographic conditions. Energy fluxes element cycles atoll system readily cross habitat boundaries create productive, diverse, biomass-rich land underwater. Past human disturbances future global change put at forefront conservation ecological restoration.

Language: Английский

Citations

2
Atolls are vital for seabirds and vice versa DOI
Ruth E. Dunn

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(10), P. 1784 - 1785

Published: Aug. 15, 2024

Language: Английский

Citations

0
Supporting resilience-based coral reef management using broadscale threshold approaches DOI
April J. Burt, Anna Koester, Nancy Bunbury

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Abstract Managing coral reefs to maintain ecosystem function and maximise resilience requires identification of indicators clear ecological reference thresholds for reef managers or aim for. In the absence local resilience-based targets, can conduct local-scale assessments by collecting data on comparing them recently established broadscale which have been defined incorporating large spatial variability. This study documents application these threshold approaches kick-start management at Aldabra Atoll UNESCO Marine World Heritage Site. Aldabra’s seaward conformed expected a well-managed remote marine reserve. All but one met exceeded each five assessed fell within ‘recover’ strategy analysis. Combining individual indices into synthetic index gave an atoll-level estimate having 87.5% ‘chance recovery’ post-disturbance. Reef predictions largely aligned with our post-bleaching trajectories. We recommend additional categories that could be included in future assessments, suggest factors need considered fine-tune site-level.

Language: Английский

Citations

0
Seabird nutrient subsidy alters size and resource use of functionally important mangrove macroinvertebrates DOI Creative Commons
Jennifer Appoo, Nicholas A. J. Graham, Christopher Jones

et al.

Ecosphere, Journal Year: 2024, Volume and Issue: 15(12)

Published: Dec. 1, 2024

Abstract Invertebrates have a central role in food webs and ecosystem functioning. By boosting productivity, allochthonous nutrient inputs influence the of recipient communities. Understanding how subsidies affect invertebrates is crucial, particularly highly productive coastal areas. Here, we examine mangrove macroinvertebrates are impacted by nutrient‐rich guano delivered nesting seabird populations at Aldabra Atoll Indian Ocean. We compare nitrogen carbon stable isotope ratios composition basal resources macroinvertebrate consumers mangroves with without seabirds. Seabird‐derived enrichment increased content sources herbivorous littorinid gastropods sesarmid crabs. In breeding seabirds, mean carapace widths omnivorous portunid crabs were 6% 11% larger, respectively. Isotopic niches larger had higher overlap compared to non‐seabird sites. Epiphytic macroalgae comprised >50% resource contributions This differed markedly from sites where main 77% leaves for gastropods, 36% sediment organic matter, 41% The sizes suggest that can promote crab fisheries productivity benefit provisioning services. shifting use functionally important macroinvertebrates, discuss seabirds modify trophic interactions, potential consequences processes resilience.

Language: Английский

Citations

0