Growth and intraspecific competitive abilities of the dioecious Lindera melissifolia (Lauraceae) in varied flooding regimes<sup>1</sup>

Hawkins, Tracy S.; Schiff, Nathan M.; Leininger, Theodor D.; Gardiner, Emile S.; Devall, Margaret S.; Hamel, Paul B.; Wilson, A. D.; Connor, Kristina F.

doi:10.3159/08-ra-049r1.1

Cited by 30 publications

(27 citation statements)

References 39 publications

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“…Female clones are shorter (Wright 1994), produce fewer flowers (Richardson et al 1990), allocate 35 times more resources to reproduction (Wright 1994), and have lower growth rates than males (Hawkins et al 2009). Disturbance or stress may favor males (Wright 1989) as they reproduce more vigorously vegetatively (Wright 1994, Hawkins et al 2009). Furthermore, these factors may have large impacts following dieback that commonly occurs at six to seven years of age, which may affect females at a higher rate (Wright 1994).…”

mentioning

confidence: 97%

“…Lindera melissifolia adults are minimally stressed by flooding (Wright 1990a, Hawkins et al 2009, Lockhart et al 2013, and are found in a variety of seasonally-flooded depressional wetlands, including bottomland hardwoods in Mississippi and Alabama (Morris 1986, Devall et al 2001, Schotz 2005, sandhill ponds between dunes within bottomland hardwood forests in Arkansas and Missouri (Wright 1991), the borders of sphagnum bogs in Georgia, limestone sinkholes in South Carolina, and Carolina Bays in North Carolina (Devall et al 2001). Lindera melissifolia has the ability to tolerate low moisture conditions due to low levels of stomatal conductance and facultatively deciduous leaves (Wright 1990a(Wright , 1990b.…”

mentioning

confidence: 98%

“…Extirpations of populations have occurred in the majority of states it is present in since its listing as federally endangered, and its status is considered stable to declining at present (USFWS 2014). More specific ecological knowledge is needed for developing a management strategy (Devall et al 2001, Aleric and Kirkman 2005, Hawkins et al 2009), and greater understanding of this species' biology may provide insight into the relationship of disturbance and hydrology to overall plant diversity within the threatened wetlands they inhabit (Kirkman and Sharitz 1994).…”

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confidence: 99%

“…Some populations currently have very few females and are dominated by few genetic individuals concentrated in phalanx-like clusters of closely-spaced adult stems (Gustafson et al 2013). While currently not well understood, it has been hypothesized that gender bias in populations may be related to differential interspecific competitive abilities of males and females (Wright 1989, Wright 1994, Hawkins et al 2009). Female clones are shorter (Wright 1994), produce fewer flowers (Richardson et al 1990), allocate 35 times more resources to reproduction (Wright 1994), and have lower growth rates than males (Hawkins et al 2009).…”

mentioning

confidence: 99%

“…While currently not well understood, it has been hypothesized that gender bias in populations may be related to differential interspecific competitive abilities of males and females (Wright 1989, Wright 1994, Hawkins et al 2009). Female clones are shorter (Wright 1994), produce fewer flowers (Richardson et al 1990), allocate 35 times more resources to reproduction (Wright 1994), and have lower growth rates than males (Hawkins et al 2009). Disturbance or stress may favor males (Wright 1989) as they reproduce more vigorously vegetatively (Wright 1994, Hawkins et al 2009).…”

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confidence: 99%

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Environmental Controls of Reproduction and Early Growth ofLindera melissifolia(Lauraceae)

et al. 2014

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Lindera melissifolia is a federally endangered endemic shrub of the southeastern United States. Numerous populations are gender-biased. The goal of this study was to determine environmental conditions most appropriate for establishment and growth of seedlings and adult females. Seedlings were grown under varied moisture and light to compare growth rates and morphological ratios. Seedlings were clipped to simulate two levels of disturbance, and their shoot sprouting ability was assessed. Densities of adult flowering stems, co-occurring species, and solar transmittance were analyzed within two North Carolina populations. The lowest levels of light resulted in decreased growth, but light and moisture did not interact to affect seedling growth rate significantly. Morphological ratios and growth responses followed patterns expected for plants exhibiting plasticity in response to varied light levels, but not to moisture. Clipping immature plants below root collars decreased survivorship to 31%. Growth rates of new shoots when clipped below and above the root collar were 40% and 58% percent lower, respectively (p < 0.001). Percent cover of Lindera melissifolia explained 52% of the variation in the number of male flowering stems per plot and 14% of the variation in female stems per plot. No relation of stem density to percent transmittance was found. Indicator species analysis revealed association of males with facultative wetland species and a weak association of females with wetland obligates, but overall difference in vegetation composition between plots with or without females present was slight (MRPP: A ¼ 0.02, p ¼ 0.016). We concluded hydrology should be a primary concern for future studies.

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confidence: 97%

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confidence: 98%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Environmental Controls of Reproduction and Early Growth ofLindera melissifolia(Lauraceae)

et al. 2014

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Plant sex influences on riparian communities and ecosystems

Scheuerell,

LeRoy

2023

Ecology and Evolution

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Probabilistic co‐occurrence assessment for suites of listed species

Richardson¹,

Dunne²,

Feken

et al. 2021

Integr Envir Assess & Manag

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Section 7 of the Endangered Species Act requires the US Environmental Protection Agency (US EPA) to consult with the Services (US Fish and Wildlife Service and National Marine Fisheries Service) over potential pesticide impacts on federally listed species. Consultation is complicated by the large number of pesticide products and listed species, as well as by lack of consensus on best practices for conducting co‐occurrence analyses. Previous work demonstrates that probabilistic estimates of species' ranges and pesticide use patterns improve these analyses. Here we demonstrate that such estimates can be made for suites of sympatric listed species. Focusing on two watersheds, one in Iowa and the other in Mississippi, we obtained distribution records for 13 species of terrestrial and aquatic listed plants and animals occurring therein. We used maximum entropy modeling and bioclimatic, topographic, hydrographic, and land cover variables to predict species' ranges at high spatial resolution. We constructed probabilistic spatial models of use areas for two pesticides based on the US Department of Agriculture Cropland Data Layer and reduced classification errors by incorporating information on the relationships between individual pixels and their neighbors using object‐based images analysis. We then combined species distribution and crop footprint models to derive overall probability of co‐occurrence of listed species and pesticide use. For aquatic species, we also integrated an estimate of downstream residue transport. We report each separate species‐by‐use‐area co‐occurrence estimate and also combine these modeled co‐occurrence probabilities across species within watersheds to produce an overall metric of potential pesticide exposure risk for these listed species at the watershed level. We propose that the consultation process between US EPA and the Services be based on such batched estimation of probabilistic co‐occurrence for multiple listed species at a regional scale. Integr Environ Assess Manag 2022;18:1088–1100. © 2021 SETAC

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Growth and intraspecific competitive abilities of the dioecious Lindera melissifolia (Lauraceae) in varied flooding regimes¹

Cited by 30 publications

References 39 publications

Environmental Controls of Reproduction and Early Growth ofLindera melissifolia(Lauraceae)

Environmental Controls of Reproduction and Early Growth ofLindera melissifolia(Lauraceae)

Plant sex influences on riparian communities and ecosystems

Probabilistic co‐occurrence assessment for suites of listed species

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Growth and intraspecific competitive abilities of the dioecious Lindera melissifolia (Lauraceae) in varied flooding regimes1

Cited by 30 publications

References 39 publications

Environmental Controls of Reproduction and Early Growth ofLindera melissifolia(Lauraceae)

Environmental Controls of Reproduction and Early Growth ofLindera melissifolia(Lauraceae)

Plant sex influences on riparian communities and ecosystems

Probabilistic co‐occurrence assessment for suites of listed species

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Growth and intraspecific competitive abilities of the dioecious Lindera melissifolia (Lauraceae) in varied flooding regimes¹