Climate Drivers of Spartina alterniflora Saltmarsh Production in Georgia, USA

Więski, Kazimierz; Pennings, Steven C.

doi:10.1007/s10021-013-9732-6

Cited by 58 publications

(87 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, increased precipitation was associated with higher biomass in July and August, but also in our coldest two periods (November-December and January-February, Figure 7). These results are consistent with previous findings by Dame and Kenny [54], Gross et al [55], and Więski and Pennings [20].…”

Section: Temperaturessupporting

confidence: 94%

“…Both our study and Więski and Pennings [20] found strong intra-annual differences in drivers and biomass responses for early fall during a common period of study (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011). Biomass ranges were comparable, even though Więski and Pennings used non-destructive, site-specific allometric equations from fewer and smaller sampling areas versus our more synoptic remote sensing procedure.…”

Section: Discussionsupporting

confidence: 65%

“…To allow comparison of our remotely sensed biomass estimates with a previous Georgia Coastal Ecosystems 12-year study (2000-2011) of late growing season S. alterniflora biomass versus external drivers [20], we binned satellite observations for the same 12-year period and applied our linear univariate and multiple regressions procedures (noted as Fall 2000-2011). In addition, data for all years were binned into five periods to examine the influence of climate drivers across the annual growth and senescence cycles, using the following intervals: (1) the last week of September through the first week of November (simply noted as Fall); (2) within November and December; (3) within January and February; (4) within April and May; and (5) within July and August.…”

Section: Statistical Analysesmentioning

confidence: 99%

See 2 more Smart Citations

Examination of Abiotic Drivers and Their Influence on Spartina alterniflora Biomass over a Twenty-Eight Year Period Using Landsat 5 TM Satellite Imagery of the Central Georgia Coast

O’Donnell

Schalles

2016

Remote Sensing

View full text Add to dashboard Cite

Abstract:We examined the influence of abiotic drivers on inter-annual and phenological patterns of aboveground biomass for Marsh Cordgrass, Spartina alterniflora, on the Central Georgia Coast. The linkages between drivers and plant response via soil edaphic factors are captured in our graphical conceptual model. We used geospatial techniques to scale up in situ measurements of aboveground S. alterniflora biomass to landscape level estimates using 294 Landsat 5 TM scenes acquired between 1984 and 2011. For each scene we extracted data from the same 63 sampling polygons, containing 1222 pixels covering about 1.1 million m 2 . Using univariate and multiple regression tests, we compared Landsat derived biomass estimates for three S. alterniflora size classes against a suite of abiotic drivers. River discharge, total precipitation, minimum temperature, and mean sea level had positive relationships with and best explained biomass for all dates. Additional results, using seasonally binned data, indicated biomass was responsive to changing combinations of variables across the seasons. Our 28-year analysis revealed aboveground biomass declines of 33%, 35%, and 39% for S. alterniflora tall, medium, and short size classes, respectively. This decline correlated with drought frequency and severity trends and coincided with marsh die-backs events and increased snail herbivory in the second half of the study period.

show abstract

Section: Temperaturessupporting

confidence: 94%

Section: Discussionsupporting

confidence: 65%

Section: Statistical Analysesmentioning

confidence: 99%

See 1 more Smart Citation

Examination of Abiotic Drivers and Their Influence on Spartina alterniflora Biomass over a Twenty-Eight Year Period Using Landsat 5 TM Satellite Imagery of the Central Georgia Coast

O’Donnell

Schalles

2016

Remote Sensing

View full text Add to dashboard Cite

show abstract

“…alterniflora is approximately 30 °C (Giurgevich & Dunn ; Dunn et al . ; Więski & Pennings ). Whether this thermal optimum explains the hump‐shaped relationships we found in China for plant height, per cent of culms flowering and seed production vs. average annual temperature (Fig.…”

Section: Discussionmentioning

confidence: 99%

Geographical variation in vegetative growth and sexual reproduction of the invasive Spartina alterniflora in China

et al. 2015

Self Cite

View full text Add to dashboard Cite

Summary Phenotypic variation plays an important role in successful plant invasions. The spread of invasive species over large geographic ranges may be facilitated if plants can match their phenotype to local abiotic conditions. Spartina alterniflora, native to the United States, was introduced into China in 1979 and has spread over 19ᵒ of latitude along the eastern coast of China. We studied patterns in vegetative growth and sexual reproduction of S. alterniflora at 22 sites at 11 geographic locations over a latitudinal gradient of ˜2000 km from Tanggu (39.05°N, high latitude) to Leizhou (20.90°N, low latitude) in China. We further evaluated the basis of phenotypic differences by growing plants from across the range in a common garden for 2 growing seasons. We found distinct latitudinal clines in plant height, shoot density and sexual reproduction across latitude. Some traits exhibited linear relationships with latitude; others exhibited hump‐shaped relationships. We identified correlations between plant traits and abiotic conditions such as mean annual temperature, growing degree days, tidal range and soil nitrogen content. However, geographic variation in all but one trait disappeared in the common garden, indicating that variation largely due to phenotypic plasticity. Only a slight tendency for latitudinal variation in seed set persisted for 2 years in the common garden, suggesting that plants may be evolving genetic clines for this trait. Synthesis. The rapid spread of Spartina alterniflora (S. alterniflora) in China has probably been facilitated by phenotypic plasticity in growth and reproductive traits. We found little evidence for the evolution of genetic clines in China, even though these exist for some traits in the native range. The considerable variation among clones, within provenances, that persisted in the common garden suggests a potential for the evolution of geographic clines in the future. Low fecundity of low‐latitude S. alterniflora populations in China might result in a slower spread at low latitudes, but S. alterniflora is likely to continue to spread rapidly at high latitudes in China and into the Korean peninsula.

show abstract

“…In years with high precipitation and river discharge, salt marsh plants are more productive (Wieski and Pennings 2014). GCE investigators have examined how interactions between salt marsh plants and their herbivores vary on multiple spatial scales along the Atlantic Coast of the U.S. Herbivores are more abundant, and do more damage to plants, at low vs. high latitudes, which helps explain geographic variation in the palatability of coastal plants and in herbivore body size (Pennings et al 2001(Pennings et al , 2009Ho and Pennings 2013).…”

Section: Helen Schneider Lemaymentioning

confidence: 99%

Limnology and Oceanography Bulletin Volume 24 Number 4 November 2015 101–124

2015

Limnology & Oceanogr Bull

View full text Add to dashboard Cite

Climate Drivers of Spartina alterniflora Saltmarsh Production in Georgia, USA

Cited by 58 publications

References 33 publications

Examination of Abiotic Drivers and Their Influence on Spartina alterniflora Biomass over a Twenty-Eight Year Period Using Landsat 5 TM Satellite Imagery of the Central Georgia Coast

Examination of Abiotic Drivers and Their Influence on Spartina alterniflora Biomass over a Twenty-Eight Year Period Using Landsat 5 TM Satellite Imagery of the Central Georgia Coast

Geographical variation in vegetative growth and sexual reproduction of the invasive Spartina alterniflora in China

Limnology and Oceanography Bulletin Volume 24 Number 4 November 2015 101–124

Contact Info

Product

Resources

About