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232 results for “coral reef fish”
Multi-decadal stability of fish productivity despite increasing coral reef degradation
<p>1. Under current trajectories, it is unlikely that the coral reefs of the future will resemble those of the past. As multiple stressors, such as climate change and coastal development, continue to impact coral reefs, understanding the changes in ecosystem functioning is imperative to protect key ecosystem services.</p> <p>2. We used a 26-year dataset of benthic reef fishes (including cryptobenthic fishes) to identify multi-decadal trends in fish biomass production on a degraded coral reef. We converted fish abundances into estimates of community productivity to track the long-term trend of fish biomass production through time.</p> <p>3. Following the first mass coral bleaching event in 1998, the abundance, standing biomass, and productivity of fish communities remained remarkably constant through time, despite the occurrence of multiple stressors, including extreme sedimentation, cyclones, and mass coral bleaching events. Species richness declined following the 1998 bleaching event, but rebounded to pre-bleaching levels and also remained relatively stable.</p> <p>4. Although the species composition of the communities changed over time, these new community configurations still maintain a steady level of fish biomass production. While these highly dynamic and increasingly degraded systems can still provide some critical ecosystem functions, it is unclear whether these patterns will remain stable over future decades.</p>
Data from: The role of fish feces for nutrient cycling on coral reefs
<p>Consumers play an important role in biogeochemical cycles through the consumption and release of essential elements such as carbon (C), nitrogen (N), and phosphorus (P). Indeed, a large proportion of consumed elements are released into the environment in inorganic (i.e., excretion) or organic form (i.e., egestion). On coral reefs, fishes represent the bulk of consumer biomass and thus play a key role in the recycling of nutrients. In recent years, excretion rates have been studied intensively, but less is known about the rate and quality of coral reef fish egestion. In this study, we quantify the elemental contents of fish feces, estimate absorption efficiencies and compare egestion and excretion rates for 51 coral reef fish species. We show that elemental concentrations decrease remarkably little from food to feces. This is due to extremely low absorption efficiencies, resulting in the egestion of large amounts of energy and nutrients. Moreover, we show that while the quality of fish feces varies across trophic guilds, it remains highly variable within trophic guilds. Finally, we demonstrate that the release of N and P through egestion outweighs the amount of nutrients recycled through excretion. Our study highlights the need to incorporate animal egestion into assessments of ecosystem functioning and food web structure.</p>
Figure 10. - Different fish abundance dynamic profiles between 1983 and 2014 in Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia
Figure 10. - Different fish abundance dynamic profiles between 1983 and 2014 on the outer slope at Tiahura sector in Moorea.
Figure 6 in Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia
Figure 6. - Commercial fish abundance at Tiahura sector in Moorea for the barrier reef and outer slope. Second-degree polynomial models were fitted to data (*: 0.01 <p ≤ 0.05, **: 0.001 <p≤ 0.01).
Figure 4 in Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia
Figure 4. - Total fish abundance at Tiahura sector in Moorea for the fringing reef. Second degree polynomial models were fitted to data (*: 0.01 <p ≤ 0.05, **: 0.001 <p ≤ 0.01).
Figure 9 in Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia
Figure 9. - Herbivorous fish species richness at Tiahura sector in Moorea for the three habitats. Linear models were fitted to data (**: 0.001 <p ≤ 0.01; ***: p ≤ 0.001).
Figure 5 in Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia
Figure 5. - Total fish species richness at Tiahura sector in Moorea for the fringing reef. Linear models were fitted to data (***: p ≤ 0.001).
Figure 8 in Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia
Figure 8. - Herbivorous fish abundance at Tiahura sector in Moorea for the barrier reef and outer slope. Linear models were fitted to data (**: 0.001 <p ≤ 0.01).
Figure 3 in Long term monitoring of coral and fish assemblages (1983-2014) in Tiahura reefs, Moorea, French Polynesia
Figure 3. - Temporal dynamics in coral percentage cover on the outer slope of Tiahura sector from 1979 to 2011. Stars denote the five main disturbances that affected the reef over the study period (COTS: Acanthaster planci outbreak). Dotted lines correspond to linear interpolation of coral percentage cover.
Colour dimorphism in labrid fishes as an adaptation to life on coral reefs
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Data from: Body shape and mode of propulsion do not constrain routine swimming in coral reef fishes
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Data for: Fish feces reveal diverse nutrient sources for coral reefs
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Context-dependent multimodal behaviour in a coral reef fish: Stage 1 & 2 total duration and count data in behaviour trials
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Multi-decadal stability of fish productivity despite increasing coral reef degradation
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Data from: The role of fish feces for nutrient cycling on coral reefs
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Data from: Regional-scale disturbances drive long-term decline of inshore coral reef fish assemblages in the Great Barrier Reef Marine Park
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Data from: Dietary resilience of coral reef fishes to habitat degradation
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MCR LTER: Coral Reef: Changes in the abundance of fish functional groups: Adam et al. 2014 Oecologia
These data were generated from two long-term time series (knb-lter-mcr.4 and knb-lter-mcr.6) in order to analyze the relationship between the cover of live and dead branching corals and changes in the abundance of different functional groups of fishes following the loss of coral on the fore reef of Moorea due to an outbreak of corallivorous crown-of-thorns sea stars (Acanthaster planci) and a tropical cylcone. Analyses were conducted in support of an ecological manuscript published in Oecologia Adam, T. C., Brooks, A. J., Holbrook, S. J., Schmitt, R. J., Washburn, L., Bernardi, G. How will coral reef fish communities respond to climate-driven disturbances? Insight from landscape-scale perturbations. Global climate change is rapidly altering disturbance regimes in many ecosystems including coral reefs, yet the long-term impacts of these changes on ecosystem structure and function are difficult to predict. A major ecosystem service provided by coral reefs is the provisioning of physical habitat for other organisms, and consequently, many of the effects of climate change on coral reefs will be mediated by their impacts on habitat structure. Therefore, there is urgent need to understand the independent and combined effects of coral mortality and loss of physical habitat on reef-associated biota. Here, we use a unique series of events affecting the coral reefs around the Pacific island of Moorea, French Polynesia to differentiate between the impacts of coral mortality and the degradation of physical habitat on the structure of reef fish communities. We found that by removing large amounts of physical habitat, a tropical cyclone had larger impacts on reef fish communities than an outbreak of coral-eating sea stars that caused widespread coral mortality but left the physical structure intact. In addition, the impacts of declining structural complexity on reef fish assemblages accelerated as structure became increasingly rare. Structure provided by dead coral colonies can t
MCR LTER: Coral Reef: Community Dynamics: Physical Characteristics of Branching Acropora Patches and Species Richness and Abundances of Associated Fishes
Branching corals, like many in the genus Acropora, provide structurally complex habitats for reef fishes and other organisms. Fluctuations in the abundance, distribution and characteristics of staghorn Acroporid corals may contribute to changes in the abundance and species composition of reef fishes due to changes in the availability of shelter habitat and food. Farming damselfishes of the genus Stegastes occur in high abundances in staghorn thickets and actively defend food and nest space against organisms that threaten these resources. Here I examine the value of staghorn thickets as habitat for fishes, and how the presence of territorial farming damselfishes may influence the assemblage of fishes that associate with staghorn corals. Surveys of 185 Acropora pulchra thickets located in the lagoons surrounding the island of Moorea, French Polynesia revealed 85 species of fish from 25 families. Total fish abundance and species richness values ranged from no fish on a thicket to a high of 275 individuals and 26 species. Thicket area was the most important characteristic in explaining variation in attributes of the fish assemblage among staghorn thickets, with other characteristics explaining little of the species composition or trophic structure. Behavioral observations revealed that farming damselfishes were most aggressive toward corallivores, herbivores, and egg predators, while they ignored most carnivores and omnivores. Despite this pattern, I observed positive covariance between Stegastes and the group of fishes that elicited the strongest aggressive response when the effect of thicket area was removed, suggesting these fishes remain drawn to the resources produced or enhanced by Stegastes on A. pulchra thickets.
Data from 'Planktivores as trophic drivers of global coral reef fish diversity patterns'
<p>Datasets and scripts generated in the paper 'Planktivores as trophic drivers of global coral reef fish diversity patterns', published in PNAS. More details can be found in the README file.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.