Magnitude and Trophic Fate of Black Needlerush (Juncus Roemerianus) Productivity: Does Nutrient Addition Matter?

Hunter, Amy; Cebrián, Just; Stutes, Jason P.; Patterson, David B.; Christiaen, Bart; Lafabrie, Céline; Goff, Josh

doi:10.1007/s13157-014-0611-5

Cited by 13 publications

(5 citation statements)

References 77 publications

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“…alterniflora morphometrics, and herbivory were measured bimonthly over the 2012 and 2013 growing seasons (June-October). Leaf decomposition rates using the conventional litterbag method [23, 24] were measured in 2012; in 2013, many of the litterbags were washed away, precluding analysis of 2013 data, and leaf carbon and nitrogen content were measured bimonthly in 2013.…”

Section: Methodsmentioning

confidence: 99%

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Tropicalization of the barrier islands of the northern Gulf of Mexico: A comparison of herbivory and decomposition rates between smooth cordgrass (Spartina alterniflora) and black mangrove (Avicennia germinans)

et al. 2019

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The expansion of black mangrove Avicennia germinans into historically smooth cordgrass Spartina alterniflora-dominated marshes with warming temperatures heralds the migration of the marsh-mangrove ecotone northward in the northern Gulf of Mexico. With this shift, A. germinans is expected to outcompete S. alterniflora where it is able to establish, offering another prevalent food source to first order consumers. In this study, we find A. germinans leaves to be preferable to chewing herbivores, but simultaneously, chewing herbivores cause more damage to S. alterniflora leaves. Despite higher nitrogen content, A. germinans leaves decomposed slower than S. alterniflora leaves, perhaps due to other leaf constituents or a different microbial community. Other studies have found the opposite in decomposition rates of the two species’ leaf tissue. This study provides insights into basic trophic process, herbivory and decomposition, at the initial stages of black mangrove colonization into S. alterniflora salt marsh.

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Section: Methodsmentioning

confidence: 99%

“…The conventional litterbag method [23, 24] was used to estimate leaf decomposition rates. Nylon mesh bags (1.0 mm mesh) containing a known mass (air-dried) of green leaf detritus of A .…”

Section: Methodsmentioning

confidence: 99%

Tropicalization of the barrier islands of the northern Gulf of Mexico: A comparison of herbivory and decomposition rates between smooth cordgrass (Spartina alterniflora) and black mangrove (Avicennia germinans)

et al. 2019

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“…(2002) found that aboveground biomass peaked between February and June in Florida and that standing dead shoots were most abundant from June to September. Nutrient enhancements did not significantly influence productivity (Hunter et al ., 2015), and fire is a major mineralization factor. Schmalzer and Hinkle (1993) found that biomass was much lower 1 year after a burn.…”

Section: Productivitymentioning

confidence: 99%

Biological Flora of Coastal Mid- and High Marshes: Juncus roemerianus Scheele

Stalter,

Lonard

2023

Journal of Coastal Research

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Juncus roemerianus Scheele, black needlerush, is a rhizomatous salt marsh species that often forms dense monotypic stands in the mid-and high marshes along the mid-to SE Atlantic coastline and southward to the upper Texas coast in the United States. A dense rhizome complex allows this taxon to reproduce asexually and to exclude potential competitors. Juncus roemerianus has numerous ecosystem functions, including carbon sequestration, control of erosion, protection from storm surges, and as a nursery for numerous marine organisms. This species tolerates a range of salinity generally less than 5.0 ppt to as high as 35 ppt in a few marshes. Juncus roemerianus is noted for its high levels of productivity in below-and aboveground biomass values. Black needlerush is highly sensitive to oil pollution, much more so than its closest associate in the salt marsh community Sporoblus alterniflorus. Juncus roemerianus plays an important role in revegetating disturbed marshes and has a potential role for preventing the re-invasion of Phragmites australis in newly created marshes.

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“…While denitrification represents a net loss of nitrogen from the system, and thus complete filtration, plant uptake only constitutes temporary filtration because the nutrients bound to plant tissues can be delivered back into the coastal environment through decomposition. There have been many studies of nutrient cycling and storage in salt marshes and mangroves (e.g., Craig et al, 2021; Dangremond et al, 2020; Hunter et al, 2015; Martin et al, 2021; Mozdzer et al, 2011; Simpson et al, 2013; Weaver & Armitage, 2018; and references cited therein). In general, those studies show variable rates of nutrient cycling and storage, and thus variable rates of nutrient pollution filtration in salt marshes and mangroves.…”

Section: Water Quality: Nutrient and Sediment Retentionmentioning

confidence: 99%

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

Osland

Hughes

Armitage

et al. 2022

Global Change Biology

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

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Magnitude and Trophic Fate of Black Needlerush (Juncus Roemerianus) Productivity: Does Nutrient Addition Matter?

Cited by 13 publications

References 77 publications

Tropicalization of the barrier islands of the northern Gulf of Mexico: A comparison of herbivory and decomposition rates between smooth cordgrass (Spartina alterniflora) and black mangrove (Avicennia germinans)

Tropicalization of the barrier islands of the northern Gulf of Mexico: A comparison of herbivory and decomposition rates between smooth cordgrass (Spartina alterniflora) and black mangrove (Avicennia germinans)

Biological Flora of Coastal Mid- and High Marshes: Juncus roemerianus Scheele

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

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