Effect of storms on photosynthesis, carbohydrate content and survival of eelgrass populations from a coastal lagoon and the adjacent open ocean

Cabello‐Pasini, Alejandro; Lara-Turrent, Celina; Zimmerman, Richard C.

doi:10.1016/s0304-3770(02)00076-1

Cited by 61 publications

(54 citation statements)

References 33 publications

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“…The duration of PFDs above light saturation points (H sat ) has also been used to predict carbon balance and seagrass production (Dennison & Alberte 1982, 1985, Zimmerman et al 1994. Therefore, reduction in underwater light intensity and/or duration is one of the main environmental stresses leading to seagrass declines and affecting distribution patterns (Cabello-Pasini et al 2002, Holmer & Laursen 2002, Thom et al 2008, Biber et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Annual and perennial life history strategies of Zostera marina populations under different light regimes

Kim¹,

Kim²,

Park³

et al. 2014

Mar. Ecol. Prog. Ser.

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Section: Introductionmentioning

confidence: 99%

Annual and perennial life history strategies of Zostera marina populations under different light regimes

Kim¹,

Kim²,

Park³

et al. 2014

Mar. Ecol. Prog. Ser.

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“…However, new shoot recruitment through the germination of seeds transported from neighboring areas and seed pools in sediments would play an important role in the persistence of seagrass meadows when all seagrass plants have died during an unfavorable season or because of natural or anthropogenic disturbances (Peterken & Conacher 1997, Cabello-Pasini et al 2002, Plus et al 2003, Olesen et al 2004, Greve et al 2005. Thus, sexual reproduction via seedling recruitment should be examined to understand the recovery processes of degraded seagrass beds with few seagrass shoots.…”

Section: Introductionmentioning

confidence: 99%

Recolonization of Zostera marina following destruction caused by a red tide algal bloom: the role of new shoot recruitment from seed banks

Lee¹,

Park²,

Kim³

et al. 2007

Mar. Ecol. Prog. Ser.

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Harmful microalgal blooms such as red-tide or brown-tide events lead to abrupt light reductions and consequently cause immediate damage to seagrass beds. Because red tide algal blooms usually occur unexpectedly, seagrass responses to the microalgal blooms have rarely been documented. A red tide caused by a dense bloom of Heterosigma akashiwo, a noxious red-tide-causing alga of temperate and subtropical waters, occurred at a study site on the south coast of Korea in late May 2002. Because the red-tide event occurred on an eelgrass bed where seagrass monitoring was being conducted, pre-event conditions were well documented. Nearly all eelgrass shoots disappeared rapidly because of the reduction in light caused by the algal bloom. Additionally, a thick layer of mucilaginous material secreted from algal cysts suffocated eelgrass plants for weeks, directly causing eelgrass death. Eelgrass seedlings were found in the die-off area from December 2002; <1 yr after its destruction, the site was completely re-established by seedling recruitment via germination from the seed bank. Seedling mortality was very low. Seedlings grew exponentially during the spring, and their fast growth also contributed to rapid eelgrass recolonization. During the second year of recolonization, asexual reproduction through lateral shoot production by rhizome elongation and branching played the main role in the persistence and growth of the eelgrass bed. Seed density in the seed bank varied seasonally, increasing to a maximum after seed release and decreasing to nearly zero after seed germination. Many more seedlings were found and nearly all seedlings established successfully in the first year after the bloom, when no adult eelgrass shoots were observed, suggesting significant effects of shoot density on rates of seed germination and seedling establishment. This was a unique opportunity to examine eelgrass responses to dense microalgal blooms, which provided valuable information on the die-off process caused by red tide and the natural recolonization of seagrass after its destruction.KEY WORDS: Recolonization · Red tide algal bloom · Eelgrass · Zostera marina · Die-off · Seed bank · Seedling Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 342: [105][106][107][108][109][110][111][112][113][114][115] 2007 been reported (Onuf 1996). Red tide algal blooms usually occur unexpectedly; accordingly, seagrass conditions both before and after the occurrence of blooms have seldom been documented. On the coasts of Korea, red tide algal blooms occur frequently during the summer period; the frequency of bloom events has been increasing from 5 to 40 times yr -1 during the 1980s to 30 to 120 times yr -1 during the 1990s (Kim et al. 2000). At a study site on the south coast of Korea, where monitoring of seagrass beds was in progress, a red-tide event caused by a very dense bloom of Heterosigma akashiwo occurred in late May 2002 and lasted for about 2 wk. The seagrass bed and abiotic factors, such as un...

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“…This is mostly caused by human activities that lead to eutrophication-induced phytoplankton blooms and siltation, as well as natural processes (e.g. heavy storms, burial by subaqeous dune movement) (Moore et al, 1997;Hauxwell et al, 2001;McGlathery, 2001;Cabello-Pasini et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…≥5% surface irradiance depending on the species and the location). Few studies examine survival after a period in almost complete darkness (Bulthuis, 1983;Cabello-Pasini et al, 2002). Furthermore, survival and recovery times after a period of darkness or low light vary greatly between species Ruiz and Romero, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…After this period, it was decided to simulate a "darkness event" as may occur due to siltation after a heavy storm or subaqeous dune movement. This event is characterised by (nearly) complete darkness, reduced flow velocities and reduced oxygen levels (Marbà and Duarte, 1994;Hauxwell et al, 2001;McGlathery, 2001;Cabello-Pasini et al, 2002). After four months, all Z. noltii plants had died and partly decomposed; however, the apical plants of C. nodosa genets were still alive.…”

Section: Introductionmentioning

confidence: 99%

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Recovery of <i>Cymodocea nodosa</i> (Ucria) Ascherson photosynthesis after a four-month dark period

Malta¹,

Brun²,

Vergara³

et al. 2006

Sci. Mar.

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SUMMARY: Cymodocea nodosa plants were dark incubated for four months. The potential of reactivating photosynthesis was tested in an experiment in which half of the plants were reilluminated (HL) while the other half were grown under very low irradiance levels (LL). Photosynthesis was measured using PAM fluorescence and tissue nutrient and carbohydrate contents were analysed. Photosynthetic efficiency (F v /F m ) in HL plants increased from 0 to 0.58, whereas LL plants remained inactive. Photosynthetic parameters also increased, resulting in a final I k of 97.5 µmol m -2 s -1. Leaf shedding led to a negative mean RGR in HL plants. Tissue C and N dropped considerably during dark incubation in both rhizomes and shoots. Starch content was nearly equal for rhizomes and shoots (4.3 mg /g DW) and was not affected by dark incubation. In contrast, sucrose content dropped from 40.0 mg /g DW to zero in shoots and from 240 to 40.0 mg /g DW in rhizomes in HL plants. We conclude that C. nodosa is capable of recovering photosynthetic activity after four months darkness, which is considerably longer than the 80 d recorded so far for a seagrass. Stored carbohydrates, more specifically sucrose, play an important role in both survival and reactivation.Keywords: Cymodocea nodosa, chlorophyll fluorescence, light, carbohydrates, survival. RESUMEN: RECUPERACIÓN FOTOSINTÉTICA DE CYMODOCEA NODOSA (UCRIA) ASCHERSON DESPUÉS UN PERIODO DE CUATRO MESES EN OSCURIDAD. -La capacidad de recuperación de la fotosíntesis se ha investigado en la fanerógama marina Cymodocea nodosa. Para ello, se diseñó un experimento en el que la mitad de las plantas se cultivaron en condiciones de luz saturante (HL) y la otra mitad en condiciones de luz muy baja (LL), tras un precultivo de 4 meses en oscuridad. Se examinó la actividad fotosintética mediante la señal de fluorescencia del PAM y se determinó el contenido interno en nutrientes y de hidratos de carbono. La eficacia fotosintética (F v /F m ) se incrementó desde 0 hasta 0,58 en las plantas de HL, mientras las plantas de LL permanecieron fotosintéticamente inactivas. Los parámetros fotosintéticos también se incrementaron, obteniéndose valores finales para I k de 97,5 µmol fotones m -2 s -1 . Las plantas de HL mostraron valores medios negativos de la tasa de crecimiento relativo, atribuible al desprendimiento de hojas. El contenido interno de carbono y nitrógeno disminuyó considerablemente durante el periodo de oscuridad tanto en la biomasa epigea como hipogea. El contenido interno en almidón permaneció constante en ambos tejidos (4,3 mg /g DW), no estando afectado por el periodo de oscuridad. El contenido interno de sacarosa mostró un patrón opuesto, disminuyendo desde 40 mg /g DW a valores cercanos a cero en haces, y en rizomas desde 240 a 40 mg /g DW, en plantas de HL. En conclusión, C. nodosa recuperó la actividad fotosintética tras 4 meses en oscuridad, un periodo considerablemente mayor al registrado anteriormente para otras especies de fanerógamas (80 días). Los carbohidratos de reserva, y más concre...

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Effect of storms on photosynthesis, carbohydrate content and survival of eelgrass populations from a coastal lagoon and the adjacent open ocean

Cited by 61 publications

References 33 publications

Annual and perennial life history strategies of Zostera marina populations under different light regimes

Annual and perennial life history strategies of Zostera marina populations under different light regimes

Recolonization of Zostera marina following destruction caused by a red tide algal bloom: the role of new shoot recruitment from seed banks

Recovery of <i>Cymodocea nodosa</i> (Ucria) Ascherson photosynthesis after a four-month dark period

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