The impacts of mangrove range expansion on wetland ecosystem services in the southeastern United States: Current understanding, knowledge gaps, and emerging research needs

Global Change Biology, Год журнала: 2022, Номер 28(10), С. 3163 - 3187

Опубликована: Янв. 31, 2022

Abstract Climate change is transforming ecosystems and affecting ecosystem goods services. Along the Gulf of Mexico Atlantic coasts southeastern United States, frequency intensity extreme freeze events greatly influence whether coastal wetlands are dominated by freeze‐sensitive woody plants (mangrove forests) or freeze‐tolerant grass‐like (salt marshes). In response to warming winters, mangroves have been expanding displacing salt marshes at varying degrees severity in parts north Florida, Louisiana, Texas. As winter accelerates, mangrove range expansion expected increasingly modify wetland structure function. Because there differences ecological societal benefits that provide, environmental managers challenged anticipate effects on critical services, including those related carbon sequestration, wildlife habitat, storm protection, erosion reduction, water purification, fisheries support, recreation. Mangrove may also affect stability face climatic rising sea levels. Here, we review current understanding displacement services States. We identify knowledge gaps emerging research needs regarding implications marsh forests. One consistent theme throughout our trade‐offs for consideration managers. can produce beneficial changes some while simultaneously producing detrimental other Thus, be local‐scale perceptions impacts into marshes. For very specific local reasons, individuals see as a positive embraced, others negative constrained.

Язык: Английский

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

Estuaries and Coasts, Год журнала: 2021, Номер 44(6), С. 1637 - 1648

Опубликована: Янв. 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.

Язык: Английский

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An integrative salt marsh conceptual framework for global comparisons

Limnology and Oceanography Letters, Год журнала: 2023, Номер 8(6), С. 830 - 849

Опубликована: Июль 15, 2023

Abstract Salt marshes occur globally across climatic and coastal settings, providing key linkages between terrestrial marine ecosystems. However, salt marsh science lacks a unifying conceptual framework; consequently, historically well‐studied locations have been used as normative benchmarks. To allow for more effective comparisons the diversity of marshes, we developed an integrative framework. We review ecosystem‐relevant drivers from global to local spatial scales, integrate these multi‐scale settings into framework, provide guidance on applying framework using specific variables 11 examples. Overall, this allows appropriate comparison study sites by accounting global, coastal, inter‐, intra‐system unique each marsh. anticipate that incorporating will mechanism critically evaluate research questions foundation quantitative studies deepen our understanding function scales.

Язык: Английский

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Negative outcomes of novel trophic interactions along mangrove range edges

Ecology, Год журнала: 2023, Номер 104(6)

Опубликована: Апрель 12, 2023

Tropicalization is a phenomenon that changing the structure of ecosystems around world. Mangrove encroachment particular form tropicalization may have cascading consequences for resident fauna in subtropical coastal wetlands. There knowledge gap regarding extent interactions between basal consumers and mangroves along mangrove range edges these novel consumers. This study focuses on key wetland consumers, Littoraria irrorata (marsh periwinkle) Uca rapax (mudflat fiddler crabs), their with encroaching Avicennia germinans (black mangrove) Gulf Mexico, USA. In food preference assays, avoided consuming selectively ingested leaf tissue from common marsh grass, Spartina alterniflora (smooth cordgrass), was also previously documented Uca. The quality as source determined by measuring energy storage had interacted either or plants lab field. both stored ~10% less when interacting Avicennia, despite different feeding behaviors physiologies. negative species at individual level suggest there be population-level effects continues. Many studies shifts floral faunal communities following replacement salt vegetation, but this first to identify physiological responses contributing shifts.

Язык: Английский

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Novel Applications of Technology for Advancing Tidal Marsh Ecology

Estuaries and Coasts, Год журнала: 2021, Номер 44(6), С. 1568 - 1578

Опубликована: Апрель 16, 2021

Язык: Английский

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Seascape Configuration Influences the Community Structure of Marsh Nekton

Estuaries and Coasts, Год журнала: 2020, Номер 44(6), С. 1521 - 1533

Опубликована: Окт. 26, 2020

Язык: Английский

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Stable isotopes reveal that foraging strategy dictates trophic response of salt marsh residents to black mangrove Avicennia germinans range expansion

Marine Ecology Progress Series, Год журнала: 2023, Номер 729, С. 81 - 97

Опубликована: Дек. 15, 2023

Climate warming has facilitated the expansion of black mangrove Avicennia germinans (hereafter ‘ ’) into smooth cordgrass Spartina alterniflora salt marshes in southeastern Louisiana (USA). As macrophytes contribute to soil organic matter (SOM) and primary production, this transition could alter basal energy pathways supporting marsh food webs. We used bulk-tissue compound-specific stable isotope analyses (SIA) determine if changes dominant for 2 residents: grass shrimp ( Palaemonetes spp.) periwinkle snails Littoraria irrorata . Specifically, we Bayesian mixing models quantify relative contribution sources SOM resident webs across a - gradient Louisiana. found that changed -dominated habitat foraging strategy dictated trophic responses residents expansion. Marsh snail shifted from algae (phytoplankton epiphytic macroalgae) reliance, while remained reliant on algal regardless macrophyte dominance. Compound-specific SIA improved source distinctions provided more constrained estimates their contributions than SIA. The importance landscape warrants future investigations ability support diversity abundance present marshes. Understanding coastal wetland web dynamics help with planning evaluating most effective restoration techniques (e.g. prioritizing or habitat)

Язык: Английский

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New mapping metrics to test functional response of food webs to coastal restoration

Food Webs, Год журнала: 2020, Номер 25, С. e00179 - e00179

Опубликована: Ноя. 10, 2020

Язык: Английский

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E‐scape: Consumer‐specific landscapes of energetic resources derived from stable isotope analysis and remote sensing

Journal of Animal Ecology, Год журнала: 2021, Номер 91(2), С. 381 - 390

Опубликована: Ноя. 16, 2021

Energetic resources and habitat distribution are inherently linked. resource availability is a major driver of the consumers, but estimating how much specific habitats contribute to energetic needs consumer can be problematic. We present new approach that combines remote sensing information stable isotope ecology produce maps (E-scapes). E-scapes project species-specific use onto landscape classify areas based on importance. Using our E-scapes, we investigated relationship between white shrimp scale used generate E-scape mediated this relationship. successfully predicted size, abundance, biomass, total energy in salt marsh coastal Louisiana, USA at scales relevant movement consumer. Our alone or combination with existing models improve management restoration practices have potential test fundamental theory.

Язык: Английский

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Foundation Species Shift Causes a Partial Loss of Functional Support for Benthic Coastal Consumers

Estuaries and Coasts, Год журнала: 2024, Номер 47(6), С. 1637 - 1649

Опубликована: Июль 2, 2024

Язык: Английский

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