Coral Reefs, Год журнала: 2022, Номер 41(1), С. 161 - 173
Опубликована: Янв. 14, 2022
Язык: Английский
Coral Reefs, Год журнала: 2022, Номер 41(1), С. 161 - 173
Опубликована: Янв. 14, 2022
Язык: Английский
Ecological Indicators, Год журнала: 2020, Номер 121, С. 107148 - 107148
Опубликована: Ноя. 20, 2020
This review provides a broad conceptual overview of different approaches to measuring marine ecosystem condition and guidance for framework development (particularly relevant developing countries). The objectives were definitions identify the core key challenges within research area. Furthermore, we reviewed advantages disadvantages indicators that can be used assessments. A semi-systematic approach drawing from more than 300 studies covering range methods was followed. Generally, are based on known changes ecosystem, but ultimately, they should align with definition an consider structure functioning. As far as possible, relate observed state reference or ecological target. Importantly, practical, scalable always provided when conducting Five indicator categories identified including pressures, physical parameters, biological structure, functional models. Indicators mostly focus drivers change (i.e. ex situ pressures) these data easier obtain. While valuable, classes only provide indirect appraisal functioning in instances where relationship between pressure, known. measure directly report condition; however, (and monitoring) requirements make them impractical most instances. Ideally, integrated assessments, all categories, prioritised comprehensive condition. However, this often requires transdisciplinary collaboration, substantial capacity associated funding) time collect necessary data. An alternative is select few strategic address at same feasible project specific objectives. Where data-derived followed measurements have potential improve understanding impacts anthropogenic pressures functioning, turn facilitate better management human activities enhance
Язык: Английский
Процитировано
51Nature Ecology & Evolution, Год журнала: 2022, Номер 6(6), С. 701 - 708
Опубликована: Апрель 4, 2022
Язык: Английский
Процитировано
29Journal of Applied Ecology, Год журнала: 2023, Номер 60(4), С. 638 - 649
Опубликована: Янв. 5, 2023
Abstract The positive effect of fully protected marine areas (MPAs) on biodiversity, and specifically fishes, has been widely documented. In contrast, the potential MPAs to mitigate impact adverse climatic conditions seldom investigated. Here, we assessed effectiveness MPAs, quantified as increasing fish biomass, across wide geographic environmental gradients Mediterranean Sea. We performed underwater visual surveys within outside characterize assemblages in 52 rocky reef sites an extent over 3300 km. used steep spatial temperature gradient a ‘space‐for‐time’ substitution infer climate‐driven temporal changes. found that, expected, increased biomass. At same time, higher seawater temperatures are associated with decreased changes species composition, shifts towards more thermophilic species. Importantly, that rate decrease biomass was similar between fished sites. Taken together, these results suggest capacity harbour compared surrounding areas, is maintained broad range. will not be able offset larger‐scale biotic alterations climate change. Policy implications . Our sustained warming likely reduce Sea shift community structure, requiring conservative targets for fishery regulations. protection from fishing remain important management tool even future high‐water temperatures, expected continue provide local‐scale benefits conservation fisheries.
Язык: Английский
Процитировано
23Marine Environmental Research, Год журнала: 2025, Номер 205, С. 107014 - 107014
Опубликована: Фев. 13, 2025
Язык: Английский
Процитировано
1Functional Ecology, Год журнала: 2019, Номер 34(1), С. 240 - 251
Опубликована: Сен. 18, 2019
Abstract Herbivory is a key process on coral reefs, which, through grazing of algae, can help sustain coral‐dominated states frequently disturbed reefs and reverse macroalgal regime shifts degraded ones. Our understanding herbivory largely founded feeding observations at small spatial scales, yet the biomass structure herbivore populations more closely linked to processes which be highly variable across large areas, such as benthic habitat turnover fishing pressure. Though our spatiotemporal variation in grazer well developed, equivalent macroscale approaches bottom‐up top‐down controls are lacking. Here, we integrate underwater survey data fish abundances from four Indo‐Pacific island regions with estimate rates for two functions, cropping (which turf algae) scraping promotes settlement by clearing substrate), 72 reefs. By including range reef states, algal dominance heavily fished remote wilderness evaluate influences assemblages. Cropping were primarily influenced condition, maximized structurally complex high substratum availability low cover. Fishing was primary driver function, depleted most relative remote, unfished though did increase structural complexity. Ultimately, conditions functioning their effect biomass, tightly correlated rates. For given level show that higher dominated small‐bodied fishes, suggesting pressure greatest when size truncated. Stressors cause declines clear substrate algae will likely stimulate increases rates, both protected areas. In contrast, functions already impaired inhabited people, particularly where complexity has collapsed, indicating restoration these require scraper rebuilt towards levels. A free Plain Language Summary found within Supporting Information this article.
Язык: Английский
Процитировано
45Scientific Reports, Год журнала: 2021, Номер 11(1)
Опубликована: Март 30, 2021
Abstract Benthic cyanobacterial mats (BCMs) are becoming increasingly common on coral reefs. In Fiji, blooms generally occur in nearshore areas during warm months but some starting to prevail through cold months. Many fundamental knowledge gaps about BCM proliferation remain, including their composition and how they influence reef processes. This study examined a seasonal bloom occurring 17-year-old no-take inshore area Fiji. Surveys quantified the coverage of various BCM-types estimated biomass key herbivorous fish functional groups. Using remote video observations, we compared herbivory (bite rates) substrate covered primarily by BCMs (> 50%) lacking (< 10%) looked for indications (opportunistically) consuming BCMs. Samples different were analysed microscopy next-generation amplicon sequencing (16S rRNA). total, 51 ± 4% (mean s.e.m) benthos. Herbivorous was relatively high (212 36 kg/ha) with good representation across Bite rates significantly reduced BCM-dominated substratum, no unambiguously observed Seven identified, most containing complex consortium cyanobacteria. These results provide insight into impacts Pacific
Язык: Английский
Процитировано
34Global Change Biology, Год журнала: 2022, Номер 28(7), С. 2296 - 2311
Опубликована: Янв. 4, 2022
Extreme climatic events can reshape the functional structure of ecological communities, potentially altering interactions and ecosystem functioning. While these shifts have been widely documented, evidence their persistence potential flow-on effects on following relaxation extreme remains limited. Here, we investigate changes in trait - encompassing dimensions resource use, thermal affinity, body size herbivorous fishes a temperate reef system that experienced an marine heatwave (MHW) subsequent return to cool conditions. We quantify how modified nature intensity herbivory-related functions (macroalgae, turf, sediment removal), explored recovery dynamics macroalgal foundation species. The fish assemblage shifted as result MHW, from dominance cool-water browsing species increased evenness distribution abundance among tropical guilds supporting novel herbivory roles (i.e. scraping, cropping, sucking). Despite declined period cooling after underlying displayed limited recovery. Concomitantly, algal assemblages lack formerly dominant foundational species, kelp Ecklonia radiata, transitioning alternative state dominated by turf Sargassum spp. Our study demonstrates legacy effect MHW exemplified value monitoring phenotypic (trait mediated) core processes predict adapt future configurations changing ecosystems.
Язык: Английский
Процитировано
29Proceedings of the National Academy of Sciences, Год журнала: 2020, Номер 117(41), С. 25580 - 25589
Опубликована: Сен. 28, 2020
Anthropogenic environmental change is altering the behavior of animals in ecosystems around world. Although typically occurs on much faster timescales than demography, it can nevertheless influence demographic processes. Here, we use detailed data and empirical estimates demography from a coral reef ecosystem to develop coupled behavioral-demographic model. Analysis model reveals that feed back one another determine how responds anthropogenic forcing. In particular, an empirically observed feedback between density foraging herbivorous fish leads alternative stable states population persistence or collapse (and complete algal dominance). This makes more prone under fishing pressure but also recovery as reduced. Moreover, because behavioral feedback, response changes depends not only magnitude pace at which are imposed. For example, quickly increasing given level would persist gradual change. Our results reveal conditions just external forcing dictate More generally, our multiscale framework demonstrates high-resolution be incorporated into ecological models better understand will respond perturbations.
Язык: Английский
Процитировано
37Marine Ecology Progress Series, Год журнала: 2022, Номер 690, С. 113 - 132
Опубликована: Апрель 5, 2022
The Jardines de la Reina (JR) archipelago includes one of the largest marine protected areas (MPAs) in Caribbean Sea. However, there is limited understanding about assemblage structure its coral reef fishes. We aim to (1) describe spatial patterns fish assemblages and their potential drivers along system (2) compare several metrics inside outside MPA. surveyed ichthyofauna at 12 sites (inside MPA) ~200 km tract using a diver-operated stereo-video system. identified 31323 fishes, represented by 95 species 24 functional groups, including large rare threatened parrotfishes groupers. biomass fishes from Lutjanidae, Serranidae, Scaridae families was higher than that other reefs. Site depth explained larger fraction variance most evaluated metrics, suggesting importance local environmental heterogeneity. Fish did not show significant gradient JR center MPA periphery. Distance some variability abundance, richness, multivariate assemblages. Our results do are healthier those outside. Instead, abundant both taxonomically functionally diverse probably as result spillover effect. successful combination natural management-associated features likely an overall good ecological status JR.
Язык: Английский
Процитировано
20Communications Biology, Год журнала: 2024, Номер 7(1)
Опубликована: Янв. 31, 2024
To enhance the practice of farmed-coral transplantation, we conducted a trial an approach called "Reef Carpets" (RC), which draws inspiration from commercial turf-grass sod in land-based lawn gardening. Three 8.4m
Язык: Английский
Процитировано
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