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35 results for “coral reef ecosystem”
Data from: Deep oxygen-depleted Red Sea coral reef depressions sustain resistant ecosystems
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Protection of coral reef fish delivers ecosystem-critical biocontrol of coral-eating starfish across the Great Barrier Reef
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Data from: Seascapes as drivers of herbivore assemblages in coral reef ecosystems
Herbivorous fish maintain a critical ecosystem function on coral reefs by grazing algae and maintaining highly productive algal turf assemblages. Current paradigms implicate habitat complexity, predation and primary productivity as major drivers of the distribution and abundance of herbivorous fish, yet little is known about the relative contribution of these factors. Here, we compare bottom-up and top-down drivers of notional herbivore assemblages across an environmental gradient of wave exposure in the Palau archipelago. We surveyed herbivore assemblages at reef slopes (6 - 9m) across 18 sites, and quantified proxies of top-down control (predator biomass, habitat complexity) and bottom-up drivers (net primary production, nutrients) at each site. Despite substantial variability in herbivore biomass throughout the archipelago (6 to 65 g m-2), general additive models indicate that neither top-down nor bottom-up drivers significantly predicted biomass or density of herbivores among sites. In contrast to expectations, herbivore biomass was highest at sites with high predator biomass, low structural complexity and low benthic productivity. Rather, the highest biomass of herbivores was associated with shallow, tidally emergent, productive reef flats located adjacent to steep vertical walls ('drop-offs'). The emergent nature of this neighbouring habitat precluded occupation by territorial fishes, and multiple species of herbivores were observed to make foraging runs into this habitat once tidally inundated. We hypothesize that this habitat configuration provides an important cross-habitat resource subsidy. Multivariate ordination and permutation of herbivore communities revealed strong evidence for biogeographic partitioning throughout the archipelago (western, south-western, inner eastern and outer eastern clusters), contributing to an emerging picture that the habitat heterogeneity of seascapes can overwhelm the effects of conventional top-down and bottom-up structuring of herbivory on coral reefs.
Fig. 3 in Mitochondrial marker-based analyses provide new insights into role of coral reef ecosystems in molluscan speciation
Fig. 3 Maximum likelihood phylogenetic tree based on partial mitochondrial 16S rRNA gene sequences. Images of rocky shore and coral reef ecophene of C. catus specimens and their habitats are provided
Fig. 1 in Mitochondrial marker-based analyses provide new insights into role of coral reef ecosystems in molluscan speciation
Fig. 1 Map of localities of Lakshadweep and Andaman and Nicobar Islands; red dots indicate the sampling locations
Data from: Nutrient pollution disrupts key ecosystem functions on coral reefs
There is a long history of examining the impacts of nutrient pollution and pH on coral reefs. However, little is known about how these two stressors interact and influence coral reef ecosystem functioning. Using a six-week nutrient addition experiment, we measured the impact of elevated nitrate (NO3) and phosphate (PO43) on net community calcification (NCC) and net community production (NCP) rates of individual taxa and combined reef communities. Our study had four major outcomes: 1) NCC rates declined in response to nutrient addition in all substrate types; 2) the mixed community switched from net calcification to net dissolution under medium and high nutrient conditions; 3) nutrients augmented pH variability through modified photosynthesis and respiration rates; and 4) nutrients disrupted the relationship between NCC and aragonite saturation state documented in ambient conditions. These results indicate that the negative effect of NO3 and PO43 addition on reef calcification is likely both a direct physiological response to nutrients and also an indirect response to a shifting pH environment from altered NCP rates. Here, we show that nutrient pollution could make reefs more vulnerable to global changes associated with ocean acidification and accelerate the predicted shift from net accretion to net erosion.
Data from: Seascapes as drivers of herbivore assemblages in coral reef ecosystems
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eDNA metabarcoding survey reveals fine-scale coral reef community variation across a remote, tropical island ecosystem
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Data from: Evaluating management strategies to optimise coral reef ecosystem services
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Data from: Nutrient pollution disrupts key ecosystem functions on coral reefs
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Fig. 2 in Mitochondrial marker-based analyses provide new insights into role of coral reef ecosystems in molluscan speciation
Fig. 2 Maximum likelihood phylogenetic tree based on partial mitochondrial COI gene sequences
Fig. 6 in Preliminary observations of macrobenthic invertebrates and megafauna communities in the upper mesophotic coral ecosystems in Apo Reef Natural Park, Philippines
Fig. 6. Mean percentage cover of the benthic categories across depths (A) and reef types (B). Abbreviations of the benthic categories are as follows: C – hard coral, DC – dead coral, OCT – octocoral, INV – small invertebrates, ALG – algae assemblages and ABI – abitoic. Significant differences are denoted by an asterisk (*) sign.
Behavioural modification of range-extending coral reef fishes in temperate ecosystems
<p><span>1. Coral-reef fishes are shifting their distributions poleward in response to human-mediated ocean warming, yet the consequences for recipient temperate fish communities remain poorly understood. Behavioural modification is often the first response of species to environmental change, but we know little about how this might shape the ongoing colonisation by tropical fishes of temperate-latitude ecosystems under climate change. </span></p> <p><span>2. In a global hotspot of ocean warming (southeast Australia), we quantified 14 behavioural traits of invading tropical and local co-occurring temperate fishes at 10 sites across a 730 km latitudinal gradient as a proxy of species behavioural niche space in different climate ranges (subtropical, warm-temperate, cold-temperate). </span></p> <p><span>3. We found that tropical fishes (4 species) modified their behavioural niches as well as increased their overall behavioural niche breadth in their novel temperate ranges where temperate species predominate, but maintained a moderate to high niche segregation with native temperate species across latitudinal range position. Temperate species (3 co-occurring species) also modified their niches, but in contrast to tropical species, experienced an increased niche breadth towards subtropical ranges. Alterations to feeding and shoaling behaviours contributed most to niche modifications in tropical and temperate species, while behaviours related to alertness and escape from potential threats contributed least.</span></p> <p>4. We here show that at warmer and colder range edges where community structures are being reshuffled due to climate change, behavioural generalism and niche modification are potential mechanisms adopted by tropical range extenders and native-temperate fishes to adjust to novel species interactions under climate change.</p>
Millennial-scale change in Caribbean coral reef ecosystem structure and the role of human and natural disturbance
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Behavioural modification of range-extending coral reef fishes in temperate ecosystems
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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.