Phytoplankton community growth-rate response to nutrient pulses in a shallow turbid estuary, Galveston Bay, Texas

Species composition and abundance of the phytoplankton community in Acapulco Bay, Mexico, were studied from May to December 2009. Samples were collected at 5 stations (4 coastal and 1 oceanic) at 3 depths (1, 5 and 10 m). Eighty-seven species were identified: 54 dinoflagellates, 32 diatoms and 1 silicoflagellate. The community was structured mainly by adiaphoric species, that is, species adapted to both neritic and oceanic environments. Species abundance and composition varied significantly during the sampling period due to increased nutrient concentrations in the rainy season. Dinoflagellate species were more abundant during the dry season, and diatom species dominated numerically during the rainy season.

show abstract

“…Mean temperature at the sampling stations during the study period varied significantly from 25 Figure 2). …”

Section: Resultsmentioning

confidence: 99%

Temporal variation in the phytoplankton community of Acapulco Bay, Mexico

Rojas‐Herrera

González

García‐Ibáñez

et al. 2012

Microbiol Res (Pavia)

View full text Add to dashboard Cite

show abstract

“…Short‐term responses of bacteria and phytoplankton to N‐pulses were usually reported from systems with limiting nutrient conditions (e.g., Ornolfsdottir et al ; Zhao and Quigg ; Adams et al ). We found a strong short‐term phytoplankton bloom in a river with background concentrations of 4 mg L −1 DIN.…”

Section: Discussionmentioning

confidence: 99%

Structural changes of the microplankton community following a pulse of inorganic nitrogen in a eutrophic river

Kleinteich

Hilt

Hoppe

et al. 2019

Limnology & Oceanography

View full text Add to dashboard Cite

Global change will increase the number and severity of extreme events resulting in strongly pulsed nutrient loading to rivers. Recent studies indicate the potential for rapid plankton shifts as short-term response to storm events and highlight the need for high-frequency methods to understand these complex processes. Here, we studied the effects of a strong short-term pulse of ammonium nitrate in a eutrophic temperate river that elevated nitrate-N concentrations from 3.1 to 10-55 mg L −1 . An intense phytoplankton bloom increased chlorophyll a concentrations from below 10 μg L −1 to over 140 μg L −1 despite of high background N concentrations and followed the N-pulse downstream. High-throughput sequencing revealed the temporal dynamics of the bacterial (16S rRNA gene) and microeukaryotic (18S rRNA gene) community throughout the event. Bacterial and microeukaryotic community richness was reduced, and community composition changed significantly during the bloom. Few microeukaryote taxa (e.g., Cyclotella meneghiniana, Chlamydomonas) dominated the bloom and replaced the rich summer phytoplankton community. Long-term monitoring data (2008-2016) using classical microscope analyses showed that seasonal shifts in phytoplankton community composition were linked to physical parameters and nutrient availability with P-limitation observed in spring but not in summer. We conclude that a disturbance in abiotic and biotic control factors, such as caused by a nutrient pulse, can induce structural shifts in the microplankton community leading to a phytoplankton bloom, even in eutrophic waters.

show abstract

“…Hence, the greatest abundances of some of the phytoplanktonic species found during May, September, and October 2012 can be attributed to water temperatures which are significantly warmer [3] [9] sincehigh temperatures can enhance growth of some dinoflagellate populations. In addition, diatoms respond rapidly to the increase of nutrient concentration [19], thus their growth can be faster than the found for dinoflagellates, as it occurs during the raining season. At least six of the 42 identified dinoflagellate species (Dinophysis caudata, Gonyaulax polygramma, G. spinifera, Neoceratium furca, N. fusus, and N. tripos), have been related to HABs or red tides in other Mexican localities [20].…”

Section: Community Structurementioning

confidence: 92%

Temporal Variation in Composition and Abundance of Phytoplankton Species during 2011 and 2012 in Acapulco Bay, Mexico

Moreno-Díaz¹,

Rojas‐Herrera²,

Violante-González³

et al. 2015

OJMS

View full text Add to dashboard Cite

Phytoplankton samples were collected in Acapulco Bay during 2011 (January-April and September) and 2012 (April-July, October, and November) with the objective of determining the abundance and species composition. Samples were collected in two stations located in the bay. A total of 82 species were identified: 42 dinoflagellates, 35 diatoms, three cyanobacteria, and two silicoflagellates. Dinoflagellates were more abundant in the dry season, while diatoms dominated during rainy season. At least seven dinoflagellate species were recorded as potentially toxic, which may increase their populations and turn into harmful algal blooms (HABs) if environmental conditions within the bay are modified. In April 2012 a HAB of the non-toxic species Neoceratium balechii was documented.

show abstract

Phytoplankton community growth-rate response to nutrient pulses in a shallow turbid estuary, Galveston Bay, Texas

Cited by 68 publications

References 49 publications

Temporal variation in the phytoplankton community of Acapulco Bay, Mexico

Temporal variation in the phytoplankton community of Acapulco Bay, Mexico

Structural changes of the microplankton community following a pulse of inorganic nitrogen in a eutrophic river

Temporal Variation in Composition and Abundance of Phytoplankton Species during 2011 and 2012 in Acapulco Bay, Mexico

Contact Info

Product

Resources

About