Are coastal habitats important nurseries? A meta‐analysis

Conservation Letters, Journal Year: 2019, Volume and Issue: 12(4)

Published: March 25, 2019

Abstract Nearshore‐structured habitats—including underwater grasses, mangroves, coral, and other biogenic reefs, marshes, complex abiotic substrates—have long been postulated to function as important nurseries for juvenile fishes invertebrates. Here, we review the evolution of “nursery habitat hypothesis” use >11,000 comparisons from 160 peer‐reviewed studies test whether which structured habitats increase density, growth, survival. In general, almost all significantly enhanced density—and in some cases growth survival—relative unstructured habitats. Underwater grasses mangroves also promoted density beyond what was observed These conclusions were robust variation among studies, although there significant differences with latitude phyla. Our results confirm basic nursery certain habitats, lends further support their conservation, restoration, management at a time when our coastal environments are becoming increasingly impacted. They reveal dearth evidence many systems (e.g., kelp forests) responses than density. Although recent have advocated approaches evaluating nurseries, recommend renewed emphasis on more straightforward assessments survival, reproduction, recruitment.

Language: Английский

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Climate Change Implications for Tidal Marshes and Food Web Linkages to Estuarine and Coastal Nekton

Estuaries and Coasts, Journal Year: 2021, Volume and Issue: 44(6), P. 1637 - 1648

Published: Jan. 21, 2021

Abstract Climate change is altering naturally fluctuating environmental conditions in coastal and estuarine ecosystems across the globe. Departures from long-term averages ranges of variables are increasingly being observed as directional changes [e.g., rising sea levels, surface temperatures (SST)] less predictable periodic cycles (e.g., Atlantic or Pacific decadal oscillations) extremes flooding, marine heatwaves). Quantifying short- impacts climate on tidal marsh seascape structure function for nekton a critical step toward fisheries conservation management. The multiple stressor framework provides promising approach advancing integrative, cross-disciplinary research marshes food web dynamics. It can be used to quantify effects interactions between oceans SST, ocean currents, waves) watersheds precipitation, river flows), geomorphology vegetation structure, elevation capital, sedimentation), species distributions, life history adaptations, predator-prey dynamics). However, disentangling cumulative interacting stressors marshes, whether additive, synergistic, antagonistic, time scales at which they occur, poses significant challenge. This perspective highlights key physical ecological processes affecting with an emphasis trophic linkages production nekton, recommended consideration future studies. Such studies urgently needed understand now into future.

Language: Английский

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Thresholds in seascape connectivity: the spatial arrangement of nursery habitats structure fish communities on nearby reefs

Ecography, Journal Year: 2020, Volume and Issue: 43(6), P. 882 - 896

Published: March 18, 2020

Ecosystems are linked by the movement of organisms across habitat boundaries and arrangement patches can affect species abundance composition. In tropical seascapes many coral reef fishes settle in adjacent habitats undergo ontogenetic shifts to reefs as they grow. Few studies have attempted measure at what distances from nursery these fish migrations (connectivity) cease exist how abundance, biomass proportion change on along distance gradients away areas. The present study examines seascape spatial arrangement, including between habitats, its consequences connectivity within a Mozambique using ecology approach. Fish surveys were undertaken 2016/2017 thematic map was created ArcGIS, where cover calculated. Distance mangroves seagrasses significant predictors for most species. proportions highest south archipelago, decreased with nurseries (mangroves seagrasses). Some absent sites farthest 80 km 12 seagrass habitats. nursery/non‐nursery snapper parrotfish species, well abruptly declined 8 indicating threshold which may cease. Additionally, isolated large stretches sand deep water had very low abundances several despite being moderate This highlights importance considering matrix (sand water) barriers migration.

Language: Английский

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Restoration of marine ecosystems: Understanding possible futures for optimal outcomes

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 796, P. 148845 - 148845

Published: July 2, 2021

Language: Английский

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Assessment of food web recovery following restoration using resource niche metrics

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 711, P. 134801 - 134801

Published: Nov. 17, 2019

Language: Английский

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Estuarine-terrestrial habitat gradients enhance nursery function for resident and transient fishes in the San Francisco Estuary

Marine Ecology Progress Series, Journal Year: 2020, Volume and Issue: 637, P. 141 - 157

Published: Jan. 24, 2020

Nursery functions of US West Coast drowned river valley estuaries are not well understood. Using long-term fish-monitoring data (1995-2017) in Suisun Marsh, San Francisco Estuary, California, USA, we examined spatial and temporal trends abundance apparent growth fishes with diverse life-history types. Focal species were Sacramento splittail Pogonichthys macrolepidotus , striped bass Morone saxatilis tule perch Hysterocarpus traski starry flounder Platichthys stellatus which collectively represented 55% total catch (n = 140092). We identified keystone habitat patches that functioned as nursery hotspots during the peak young-of-the-year recruitment window. Deep, flow-through sloughs close to open estuary important habitats for marine transient flounder. In contrast, mostly migrated through such corridors rear shallow, dead-end bisecting tidal marsh plains, managed ponds, uplands. Tule concentrated interior sloughs, reflecting their resident type adaptations variable conditions a small home range. Interactions among freshwater flows stationary features (e.g. channel depth, land-to-open-water ratio) related fish abundance; however, age classes differed relationships these interactions, suggesting mechanism partitioning space time. Overall, inferred connectivity—longitudinal, lateral, vertical—along estuarine-terrestrial gradient was driver diversity productivity. Consideration seascape-landscape dynamics across multiple scales should help maintain or increase populations ecological resilience face rising sea levels other environmental stressors.

Language: Английский

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The Dynamics of Seagrass Ecosystems: History, Past Accomplishments, and Future Prospects

Estuaries and Coasts, Journal Year: 2023, Volume and Issue: 46(7), P. 1653 - 1676

Published: Sept. 5, 2023

Abstract The goal of this perspective is to review how seagrass research has evolved over the past half century our current state knowledge. We knowledge ecosystems changed from pre-1970s when so little was known about seagrasses and it progressed during next 5 decades rapidly expanded. Here, we concentrate on accomplishments in areas reproductive biology ecology, population biology, seagrass-animal relationships, conservation restoration, mapping monitoring. also look ahead discuss some that are ripe for future research, especially those employing new monitoring technologies, improved restoration methods include multiple genetic variants, rhizosphere studies result a deeper understanding microbial effects nitrogen availability, sulfide levels carbon sequestration, changing climatic regimes tropicalization will likely affect temperate tropical seagrass-dominated ecosystems.

Language: Английский

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Fish movement

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 91 - 117

Published: Jan. 1, 2025

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Reconstructing pre-European marine habitats using archaeological assemblages: A case-study from the Ōtata midden, New Zealand

Journal of Archaeological Science Reports, Journal Year: 2025, Volume and Issue: 64, P. 105160 - 105160

Published: April 23, 2025

Language: Английский

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Contrasting effects of mangroves and armoured shorelines on fish assemblages in tropical estuarine seascapes

ICES Journal of Marine Science, Journal Year: 2019, Volume and Issue: 76(4), P. 1052 - 1061

Published: Jan. 11, 2019

Abstract Coastal seascapes are composed of a diversity habitats that linked in space and time by the movement organisms. The context configuration coastal ecosystems shapes many important properties animal assemblages, but potential seascape effects natural artificial on nearby typically considered isolation. We test whether, how, urban modified fish assemblages across estuaries. Fish were sampled with underwater videos five habitat types (mangroves, rock bars, log snags, unvegetated sediments, armoured shorelines) 17 estuaries eastern Australia. Different supported distinct spatial mangroves shorelines had pervasive ecological extended entire In most estuarine habitats, abundance was greatest when they close proximity mangroves, decreased due to shorelines. Many cities centred estuaries, expansion is often associated fragmentation mangrove forests. Our findings emphasize these transformations landscapes likely propagate broader impacts detectable multiple beyond

Language: Английский

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