Allison C. Squires, R. Wersal, G. Turnage, C. Mudge, Benjamin P. Sperry
{"title":"密西西比州、路易斯安那州和佛罗里达州 Oxycaryum cubense forma cubense 和 paraguayense 种群的季节物候和淀粉分配模式","authors":"Allison C. Squires, R. Wersal, G. Turnage, C. Mudge, Benjamin P. Sperry","doi":"10.1017/inp.2024.15","DOIUrl":null,"url":null,"abstract":"\n Phenological studies for Cuban bulrush [Oxycaryum cubense (Poepp. & Kunth) Lye] have been limited to the monocephalous form in Lake Columbus (Mississippi). Accordingly, there is little available information on potential phenological differences among Cuban bulrush forms (monocephalous vs. polycephalous) and populations in other geographic locations in the United States. Therefore, seasonal patterns of biomass and starch allocation in Cuban bulrush were quantified from two populations in Lake Columbus on the Tennessee-Tombigbee Waterway in Mississippi (monocephalous), two populations from Lake Martin in Louisiana (polycephalous), and two populations from Orange Lake in Florida (polycephalous). Monthly samples of Cuban bulrush inflorescence, emergent, and submersed tissue were harvested from two plots per state from October 2021 to September 2022. During monthly data collection, air temperature and photoperiod were recorded. Starch allocation patterns were similar among all sites, with starch storage being less than 1.5% dry weight for all plant tissues. Biomass was greatest in Lake Columbus (monocephalous; 600.7 g DW m-2) followed by Lake Martin (polycephalous; 392.3 g DW m-2) and Orange Lake (polycephalous; 233.85 g DW m-2). Peak inflorescence biomass occurred in the winter for the Lake Martin and Orange Lake populations, and in the summer for the Lake Columbus population. Inflorescence biomass in Lake Columbus had a positive relationship (r2=0.53) with warmer air temperatures. Emergent and submersed biomass generally had negative relationships with both photoperiod and temperature (r2=0.022-0.7789) in all sites. Peak biomass was also negatively related to temperature and photoperiod. Results from this study indicate that there are differences in biomass allocation between the two growth forms of Cuban bulrush and that growth can occur at temperatures below freezing. Low temperature tolerance may allow this species to expand its range further north than previously suspected.","PeriodicalId":14470,"journal":{"name":"Invasive Plant Science and Management","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Seasonal phenology and starch allocation patterns in populations of Oxycaryum cubense forma cubense and paraguayense in Mississippi, Louisiana, and Florida\",\"authors\":\"Allison C. Squires, R. Wersal, G. Turnage, C. Mudge, Benjamin P. Sperry\",\"doi\":\"10.1017/inp.2024.15\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n Phenological studies for Cuban bulrush [Oxycaryum cubense (Poepp. & Kunth) Lye] have been limited to the monocephalous form in Lake Columbus (Mississippi). Accordingly, there is little available information on potential phenological differences among Cuban bulrush forms (monocephalous vs. polycephalous) and populations in other geographic locations in the United States. Therefore, seasonal patterns of biomass and starch allocation in Cuban bulrush were quantified from two populations in Lake Columbus on the Tennessee-Tombigbee Waterway in Mississippi (monocephalous), two populations from Lake Martin in Louisiana (polycephalous), and two populations from Orange Lake in Florida (polycephalous). Monthly samples of Cuban bulrush inflorescence, emergent, and submersed tissue were harvested from two plots per state from October 2021 to September 2022. During monthly data collection, air temperature and photoperiod were recorded. Starch allocation patterns were similar among all sites, with starch storage being less than 1.5% dry weight for all plant tissues. Biomass was greatest in Lake Columbus (monocephalous; 600.7 g DW m-2) followed by Lake Martin (polycephalous; 392.3 g DW m-2) and Orange Lake (polycephalous; 233.85 g DW m-2). Peak inflorescence biomass occurred in the winter for the Lake Martin and Orange Lake populations, and in the summer for the Lake Columbus population. Inflorescence biomass in Lake Columbus had a positive relationship (r2=0.53) with warmer air temperatures. Emergent and submersed biomass generally had negative relationships with both photoperiod and temperature (r2=0.022-0.7789) in all sites. Peak biomass was also negatively related to temperature and photoperiod. Results from this study indicate that there are differences in biomass allocation between the two growth forms of Cuban bulrush and that growth can occur at temperatures below freezing. 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引用次数: 0
摘要
对古巴鹅掌楸[Oxycaryum cubense (Poepp. & Kunth) Lye]的物候学研究仅限于哥伦布湖(密西西比州)的单头鹅掌楸。因此,关于古巴鳞茎草(单头型与多头型)与美国其他地理位置的种群之间的潜在物候差异的可用信息很少。因此,我们对密西西比州田纳西-通比水道哥伦布湖的两个种群(单头型)、路易斯安那州马丁湖的两个种群(多头型)和佛罗里达州奥兰治湖的两个种群(多头型)的古巴鳞茎草生物量和淀粉分配的季节性模式进行了量化。从 2021 年 10 月到 2022 年 9 月,每月从每个州的两个地块采集古巴鹅掌楸花序、出水和沉水组织样本。在每月收集数据期间,记录了气温和光周期。所有地点的淀粉分配模式相似,所有植物组织的淀粉储量均小于干重的 1.5%。哥伦布湖(单头状花序;600.7 g DW m-2)的生物量最大,其次是马丁湖(多头状花序;392.3 g DW m-2)和橘子湖(多头状花序;233.85 g DW m-2)。马丁湖和奥兰治湖种群的花序生物量高峰出现在冬季,哥伦布湖种群的花序生物量高峰出现在夏季。哥伦布湖的花序生物量与较高的气温呈正相关(r2=0.53)。在所有地点,出水和沉水生物量通常与光周期和温度呈负相关(r2=0.022-0.7789)。生物量峰值也与温度和光周期呈负相关。这项研究的结果表明,古巴鳞茎草的两种生长形式在生物量分配上存在差异,在低于冰点的温度下也能生长。低温耐受性可能会使该物种的分布范围向北扩展,而不是像以前所猜测的那样。
Seasonal phenology and starch allocation patterns in populations of Oxycaryum cubense forma cubense and paraguayense in Mississippi, Louisiana, and Florida
Phenological studies for Cuban bulrush [Oxycaryum cubense (Poepp. & Kunth) Lye] have been limited to the monocephalous form in Lake Columbus (Mississippi). Accordingly, there is little available information on potential phenological differences among Cuban bulrush forms (monocephalous vs. polycephalous) and populations in other geographic locations in the United States. Therefore, seasonal patterns of biomass and starch allocation in Cuban bulrush were quantified from two populations in Lake Columbus on the Tennessee-Tombigbee Waterway in Mississippi (monocephalous), two populations from Lake Martin in Louisiana (polycephalous), and two populations from Orange Lake in Florida (polycephalous). Monthly samples of Cuban bulrush inflorescence, emergent, and submersed tissue were harvested from two plots per state from October 2021 to September 2022. During monthly data collection, air temperature and photoperiod were recorded. Starch allocation patterns were similar among all sites, with starch storage being less than 1.5% dry weight for all plant tissues. Biomass was greatest in Lake Columbus (monocephalous; 600.7 g DW m-2) followed by Lake Martin (polycephalous; 392.3 g DW m-2) and Orange Lake (polycephalous; 233.85 g DW m-2). Peak inflorescence biomass occurred in the winter for the Lake Martin and Orange Lake populations, and in the summer for the Lake Columbus population. Inflorescence biomass in Lake Columbus had a positive relationship (r2=0.53) with warmer air temperatures. Emergent and submersed biomass generally had negative relationships with both photoperiod and temperature (r2=0.022-0.7789) in all sites. Peak biomass was also negatively related to temperature and photoperiod. Results from this study indicate that there are differences in biomass allocation between the two growth forms of Cuban bulrush and that growth can occur at temperatures below freezing. Low temperature tolerance may allow this species to expand its range further north than previously suspected.
期刊介绍:
Invasive Plant Science and Management (IPSM) is an online peer-reviewed journal focusing on fundamental and applied research on invasive plant biology, ecology, management, and restoration of invaded non-crop areas, and on other aspects relevant to invasive species, including educational activities and policy issues. Topics include the biology and ecology of invasive plants in rangeland, prairie, pasture, wildland, forestry, riparian, wetland, aquatic, recreational, rights-of-ways, and other non-crop (parks, preserves, natural areas) settings; genetics of invasive plants; social, ecological, and economic impacts of invasive plants and their management; design, efficacy, and integration of control tools; land restoration and rehabilitation; effects of management on soil, air, water, and wildlife; education, extension, and outreach methods and resources; technology and product reports; mapping and remote sensing, inventory and monitoring; technology transfer tools; case study reports; and regulatory issues.