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Coral Reefs - PubMed

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Last Updated: 18 January 2023

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Benthic composition changes on coral reefs at global scales.

However, the current location and course of global coral reef benthic populations is uncertain. The raw data shows that reduced average hard coral cover from 36 1. 4% to 19 u00b1 0. 4% was largely attributed to reduced low-lying algal cover, such as algal turfs and crustose coralline algae, which was on a global basis. Anthropocene coral reefs will need a better understanding of reef change, as shown by decreased hard coral cover and an increased number of low-lying algal communities.

Source link: https://doi.org/10.1038/s41559-022-01937-2


Rapid resource depletion on coral reefs disrupts competitor recognition processes among butterflyfish species.

Yet we have no idea how these communities are affected by resource depletion and potential effects on species coexistence. We show how rapid resource depletion could affect recognition processes in butterflyfishes by using a large coral death event as a natural experiment and 3770 field observations of butterflyfish encounters. Our results show that competitor recognition procedures for heterospecifics became less effective after mass coral mortality, which we hypothesize is due to resource overlaps that have arisened following diet shifts.

Source link: https://doi.org/10.1098/rspb.2022.2158


Shifts in predator behaviour following climate induced disturbance on coral reefs.

Coral reefs are becoming more ecologically impaired around the world as a result of climate change. Coral bleaching's volume and subsequent recovery rates can be determined by behavioural plasticity in corallivore evolution and short-term trophic ecology in reaction to bleaching events, but our knowledge of these interactions in situ is uncertain. During a severe high thermal event in Belize, we investigated interactions between corallivory and coral bleaching. Parrotfish changed their grazing habits in response to bleaching by selectively avoiding bleached Orbicella spp. We hypothesize that this short-term relief from coral reefs will temporarily damp coral energy budgets by not directing energetic resources to wound healing, which may lead to compensatory nutrient acquisition. coral corals are also fragile during prolonged bleaching, so a short-term relief from coral bloomers during bleaching may not be sufficient to properly recover corals amid prolonged bleaching.

Source link: https://doi.org/10.1098/rspb.2022.1431


Alexander Dalrymple, the Utility of Coral Reefs, and Charles Darwin's Structure and Distribution of Coral Reefs.

This paper aims to establish a connection between the theoretical and practical objectives of the British Admiralty and Charles Darwin's coral reef research from 1835 to 1842. The winds and waves-and-and-thented that Dalrymple introduced a comprehensive account of coral reefs in which various aspects of the coral reefs, such as their size, slope of the sides, ridges, channels, and elevation relative to the sea were all explained by the action. For instance, it was the coral growth and the related notion of a zoological or botanical station that ultimately gave the Admiralty's attempt to use the coral reefs as instruments because it contradicted many common assumptions about the past or future of a coral reef.

Source link: https://doi.org/10.1007/s10739-022-09699-0


Analysis on ecological characteristics of Mississippian coral reefs in Langping, Guangxi.

Coral reef development in this paper were further investigated by investigating the reef building environments, palaeogeography, sedimentation of reefs, the response of reef-building corals to hydrodynamic conditions, effects of disruption, and non-reef-building organisms on reef populations, and the influence of coral reef evolution. Both coral populations ecological characteristics and reef-building environment influence the current appearance of reefs.

Source link: https://doi.org/10.1038/s41598-022-22081-8


Microeconomic adaptation to severe climate disturbances on Australian coral reefs.

Coral reefs are increasingly affected by climate-induced changes that are exacerbated by rising ocean temperatures. People whose livelihoods and wellbeing depend on the ecosystem services coral reefs provide a significant factor. Loss of coral reefs by coral reefs have a major effect on people whose livelihoods and well-being are greatly affected by the reef services reefs provide. We interviewed approximately half of Australian reef tourism operators to see how they were affected by and responded to the impacts of bleaching and cyclones, which we explored in this gap.

Source link: https://doi.org/10.1007/s13280-022-01798-w


Low functional vulnerability of fish assemblages to coral loss in Southwestern Atlantic marginal reefs.

We first investigated fish assemblages' response to coral and turf algal cover in the Southwestern Atlantic, finding coral and turf algal species of various life stages from 36 reefs distributed throughout the Southeast Atlantic, as well as identified coral-associated fish using site-occupancy models attached to data of 113 reef fish species of varying life stages from 36 reefs distributed throughout the Southeast Atlantic. With 42 species being identified as coral-associated fish, the whole fish assemblage responded more positively to coral than to turf algae. These results reveal that marginal reefs of Southwestern Atlantic reefs support resilient fish assemblages that may help maintain basic ecological functions and ecosystem services even as coral declines.

Source link: https://doi.org/10.1038/s41598-022-20919-9


An assessment of people living by coral reefs over space and time.

Consequently, the number of people living near coral reefs is often used in regional coral reef restoration, risk assessment at local and international levels, and even analysis of funding needs. We present trends of human populations living near coral reefs over a 20-year cycle, divided by region and country, as well as socioeconomic indicators such as country income category and Small Island Developing States. According to 762 million people in 2000, there are now nearly a billion people living within 100 kilometers of a coral reef in 117 coral reef countries, compared to 762 million in 2000. Coral reef population growth is higher than global averages. According to the global average, the population density 5-10 kilometers from coral reefs is 5-10 percent higher than the global average. More people from lower-middle-income countries live by coral reefs than in any other income group. From 5 to 100 kilometers, more people from lower-middle-income countries live by coral reefs than in any other income segment.

Source link: https://doi.org/10.1111/gcb.16391


Biotic Interactions and the Future of Fishes on Coral Reefs: The Importance of Trait-Based Approaches.

The coral reef ecosystem's appearance and function are influenced by biotic interactions. Reef-associated fish populations can persist as environmental conditions change, reef-associated fish populations can maintain their traditional niche or adapting to new conditions. Here, we argue that large-scale functional trait datasets allow us to investigate how biotic interactions influence the formation of modern reef fish communities and species evolution within them, thus improving our ability to forecast future changes. Biological interactions on these processes have also occurred in dynamic environments, which has been discussed for several years. Moreover, functional trait information can improve predictive modeling of future reef fish distributions and evolvability. We hope that our proposal for an integrative strategy, focusing on quantifying functionally relevant traits and how they mediate biotic interactions in various ecological contexts, will help advance new research into reef fishes' future in a changing climate.

Source link: https://doi.org/10.1093/icb/icac147

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions